Vehicle window assembly, assembling method of vehicle window assembly and vehicle

Abstract

According to the vehicle window assembly, the assembling method of the vehicle window assembly and the vehicle, the thickness of the vehicle window assembly is reduced, the assembling flexibility of the vehicle window assembly in the vehicle is improved, the sound effect of the vehicle is improved, and the driving experience of a driver and passengers is improved. The vehicle window assembly comprises vehicle window glass and a sound production assembly, the sound production assembly comprises a connecting structure, a sound guide part and a piezoelectric film, the connecting structure is installed on the side, facing the interior of a vehicle, of the vehicle window glass, a sound cavity is defined by the sound guide part, the connecting structure and the vehicle window glass, and the piezoelectric film is arranged in the sound cavity.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a window assembly, a method for assembling the window assembly, and a vehicle. Background Technology

[0002] To enhance the driving and riding experience, existing vehicles often incorporate speakers and other sound-generating components. However, these components are quite thick, requiring significant space for installation within the vehicle. This limits their placement, reduces installation flexibility, hinders the creation of surround sound and ambient noise, and ultimately diminishes the overall driving and riding experience. Summary of the Invention

[0003] This application provides a window assembly, a method for assembling the window assembly, and a vehicle. It reduces the thickness of the window assembly, increases the flexibility of assembling the window assembly in the vehicle, and helps improve the sound effects inside the vehicle, thereby enhancing the driving experience for passengers.

[0004] This application provides a vehicle window assembly for use in a vehicle, including a window glass and a sound-generating assembly. The sound-generating assembly includes a connecting structure, a sound guide, and a piezoelectric film. The connecting structure is installed on the side of the window glass facing the interior of the vehicle. The sound guide, the connecting structure, and the window glass enclose a sound cavity, and the piezoelectric film is disposed within the sound cavity.

[0005] The sound cavity is a closed sound cavity.

[0006] The connecting structure has a through hole that extends through the connecting structure along its thickness direction. The sound guide is located on the side of the connecting structure away from the window glass and covers the through hole.

[0007] The piezoelectric film is installed on the connection structure and divides the sound cavity into a first sub-sound cavity and a second sub-sound cavity. The first sub-sound cavity is located between the car window glass and the piezoelectric film, and the second sub-sound cavity is located between the piezoelectric film and the sound guide.

[0008] The connecting structure includes a first spacer, a second spacer, a first adhesive layer, and a second adhesive layer. The first spacer is spaced apart from the vehicle window glass and has a first hole that penetrates the first spacer along its thickness. The second spacer is located on the side of the first spacer away from the vehicle window glass and is spaced apart from the first spacer. The second spacer has a second hole that penetrates the second spacer along its thickness. The piezoelectric film is located between the first spacer and the second spacer, and covers the first hole and the second hole. The piezoelectric film, the first spacer, the first adhesive layer and the window glass surround to form the first sub-sound cavity, and the piezoelectric film, the second spacer, the second adhesive layer and the sound guide surround to form the second sub-sound cavity.

[0009] The first adhesive layer is located between the first spacer and the window glass. The first adhesive layer has a third hole, which penetrates the first adhesive layer along the thickness direction and communicates with the first hole. The second adhesive layer is located between the second spacer and the sound guide. The second adhesive layer has a fourth hole, which penetrates the second adhesive layer along the thickness direction and communicates with the second hole. The sound-generating component further includes a third adhesive layer, which is located on the side of the first spacer opposite to the first hole and between the first adhesive layer and the piezoelectric film.

[0010] The sound-generating component further includes a fourth adhesive layer, which is located on the side of the second spacer opposite to the second hole and between the second adhesive layer and the piezoelectric film.

[0011] The height of the acoustic cavity is greater than or equal to 1.5 mm.

[0012] Wherein, the thickness of the first spacer is greater than or equal to 0.76 mm, and / or the thickness of the second spacer is greater than or equal to 0.76 mm.

[0013] Wherein, the thickness of the first spacer is less than or equal to 1.0 mm, and / or the thickness of the second spacer is less than or equal to 1.0 mm.

[0014] The piezoelectric film has a transparency of 85% or higher and a haze of 3% or lower.

[0015] The piezoelectric film is made of polyvinylidene fluoride.

[0016] The thickness of the sound guide is greater than or equal to 0.7 mm and less than or equal to 1.5 mm.

[0017] Wherein, the material of the first adhesive layer includes optically transparent adhesive, and / or, the material of the second adhesive layer includes optically transparent adhesive.

[0018] The vehicle window glass has a visible area and a non-visible area, the non-visible area being arranged around the visible area. The vehicle window assembly also includes a first electrode and a second electrode, both of which are located in the non-visible area and are electrically connected to the piezoelectric film, and are spaced apart from each other.

[0019] The vehicle window glass includes a first glass, a second glass, and an intermediate connecting layer. The first glass is the glass facing the outside of the vehicle. Along the thickness direction of the vehicle window glass, the second glass and the first glass are spaced apart. The intermediate connecting layer is located between the first glass and the second glass. The connecting structure is located on the side of the second glass away from the first glass.

[0020] This application also provides a vehicle, including a body and a window assembly as described above, the window assembly being mounted on the body.

[0021] This application also provides a method for assembling a vehicle window assembly, the method comprising: A first tooling assembly and a second tooling assembly are provided. The first tooling assembly includes a first positioning tooling and a sound guiding component. The first positioning tooling has a first positioning groove. The sound guiding component includes a sound guiding element, a second spacer, and a piezoelectric film. The sound guiding element and the second spacer are both installed in the first positioning groove. The second spacer is located on the side of the sound guiding element opposite to the bottom wall of the first positioning groove. The piezoelectric film is installed on the side of the second spacer opposite to the sound guiding element. The second tooling assembly includes a window glass, a second positioning tooling, and a first spacer. The second positioning tooling is installed on the surface of the window glass facing the interior of the vehicle. The second positioning tooling has a second positioning groove that extends through the second positioning tooling along the thickness direction of the window glass. The first spacer is installed in the second positioning groove. Remove the sound guiding component from the first positioning fixture; The sound guiding component is installed in the second positioning groove, wherein the piezoelectric film is installed between the first spacer and the second spacer; Remove the second positioning fixture from the vehicle window glass.

[0022] The tension of the piezoelectric film is greater than or equal to 2N and less than or equal to 3N.

[0023] The assembly method of the window assembly further includes: In the step of providing the first tooling assembly and the second tooling assembly, the sound guiding component further includes a second adhesive layer and a fourth adhesive layer. The second adhesive layer is installed in the first positioning groove and is located between the sound guiding member and the second spacer. The fourth adhesive layer is installed in the first positioning groove and is located between the second adhesive layer and the piezoelectric film, and is located between the second spacer and the groove sidewall of the first positioning groove, and is also connected to the second adhesive layer. The second tooling assembly further includes a first adhesive layer and a third adhesive layer. The first adhesive layer is installed in the second positioning groove and is located between the window glass and the first spacer. The third adhesive layer is installed in the second positioning groove and is located on the side of the first adhesive layer opposite to the window glass, and is located between the first spacer and the groove sidewall of the second positioning groove, and is also connected to the first adhesive layer. In the step of installing the sound guiding component into the second positioning groove, the third adhesive layer is located between the piezoelectric film and the first adhesive layer.

[0024] In this process, at least one of the first adhesive layer, the second adhesive layer, the third adhesive layer, and the fourth adhesive layer is cured using a photocuring process.

[0025] The vehicle window assembly provided in this application includes a sound-generating assembly, which comprises a connecting structure, a sound guide, and a piezoelectric diaphragm. The connecting structure is installed on the side of the window glass facing the vehicle interior and has a through-hole. The sound guide is located on the side of the connecting structure facing away from the window glass and covers the through-hole. The sound guide, connecting structure, and window glass together form a sound cavity. The piezoelectric diaphragm is installed on the connecting structure and divides the sound cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity is located between the window glass and the piezoelectric diaphragm, and the second sub-cavity is located between the piezoelectric diaphragm and the sound guide. The piezoelectric diaphragm can vibrate within the sound cavity to generate sound waves, which are then conducted to the vehicle interior through the sound guide. This configuration reduces the thickness of the sound-generating assembly, increases the flexibility of its installation in the vehicle, and improves the interior sound quality, thereby enhancing the driving and riding experience for passengers. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0027] Figure 1 A schematic diagram of the vehicle structure provided for an embodiment of this application; Figure 2 yes Figure 1 A plan view of the window assembly in the vehicle shown. Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the window assembly shown. Figure 4 This is a schematic diagram of the assembly structure of the first tooling assembly; Figure 5 This is a schematic diagram of the assembly structure of the second tooling assembly; Figure 6 This is a schematic diagram illustrating the assembly method of the car window assembly.

[0028] Reference numerals: Vehicle 1000, Body 2000, Window assembly 3000, Window glass 200, Sound-generating assembly 100, Visible area 200a, Non-visible area 200b, First glass 210, Second glass 220, Intermediate connecting layer 230, Second surface 211, Fourth surface 212, Second peripheral side 213, Third surface 221, First surface 222, First peripheral side 223, Connecting structure K, Through hole K1, First spacer 110, Second spacer 120, Sound guide 130, First adhesive part 140, Second adhesive part 150, Piezoelectric film 160, Electrode 170, Sound cavity Q, First tone Cavity Q1, second sub-voice cavity Q2, fifth surface 111, sixth surface 112, first hole 115, seventh surface 121, eighth surface 122, second hole 125, ninth surface 131, tenth surface 132, third peripheral side 133, first adhesive layer 141, third adhesive layer 145, third hole 141a, second adhesive layer 151, fourth adhesive layer 155, fourth hole 151a, first electrode 171, second electrode 175, first tooling assembly E1, second tooling assembly E2, first positioning tooling 10, first positioning groove 11, second positioning tooling 20, second positioning groove 21, sound guide assembly H, tension force F. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Please see Figure 1 , Figure 1 This is a structural schematic diagram of the vehicle 1000 provided in the embodiments of this application.

[0031] This application provides a vehicle 1000, which includes a body 2000 and a window assembly 3000. The body 2000 may be a sheet metal part. The window assembly 3000 is mounted on the body 2000. In this embodiment, the window assembly 3000 serves as a sunroof. In other embodiments, the window assembly 3000 may also serve as a windshield, rear windshield, or other glass of the vehicle 1000; this application does not impose any limitations on this.

[0032] Please see Figure 2 , Figure 2 yes Figure 1 A plan view of the window assembly 3000 in the vehicle 1000 shown.

[0033] The window assembly 3000 includes a window glass 200 and a sound-generating assembly 100. Along the thickness direction of the window glass 200, the sound-generating assembly 100 is mounted on the side of the window glass 200 facing the interior of the vehicle 1000.

[0034] The vehicle window glass 200 has a visible area 200a and a non-visible area 200b. The visible area 200a is located in the center of the vehicle window glass 200. Outside light can enter the interior of the vehicle 1000 through the visible area 200a, and light from inside the vehicle 1000 can also enter the outside environment through the visible area 200a. The non-visible area 200b is located at the edge of the vehicle window glass 200 and surrounds the visible area 200a. It should be noted that the non-visible area 200b is a spatial area, which is part of the three-dimensional spatial area of ​​the entire vehicle window glass 200, and is not limited to the planar areas on the first glass 210 and the second glass 220.

[0035] Please refer to the following: Figure 3 , Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the window assembly 3000.

[0036] The vehicle window glass 200 is laminated glass. Specifically, the vehicle window glass 200 includes a first glass 210, a second glass 220, and an intermediate connecting layer 230. Along the thickness direction of the vehicle window glass 200, the second glass 220 and the first glass 210 are spaced apart and opposite to each other. The intermediate connecting layer 230 is located between the first glass 210 and the second glass 220 and is bonded between the first glass 210 and the second glass 220.

[0037] The first glass 210 is the glass of the vehicle window 200 facing outwards from the vehicle 1000. The first glass 210 has a second surface 211, a fourth surface 212, and a second peripheral side surface 213. The fourth surface 212 is the surface of the first glass 210 facing the second glass 220 and is disposed towards the interior of the vehicle 1000. Along the thickness direction of the first glass 210, the second surface 211 and the fourth surface 212 are disposed opposite to each other and face inwards from the vehicle 1000. The second peripheral side surface 213 surrounds the fourth surface 212 and the second surface 211 and connects the second surface 211 and the fourth surface 212. The thickness of the first glass 210 is greater than or equal to 2.1 mm to ensure that the first glass 210 has a certain thickness, which helps to prevent sound waves from being transmitted to the exterior of the vehicle 1000 and causing noise pollution.

[0038] The second glass 220 is the glass of the vehicle window 200 facing the interior of the vehicle 1000, and is located on the side of the first glass 210 facing the interior of the vehicle 1000. Specifically, the second glass 220 is located on the side of the fourth surface 212 opposite to the second surface 211, and is spaced apart from the fourth surface 212. The second glass 220 has a third surface 221, a first surface 222, and a first peripheral side surface 223. The third surface 221 faces the fourth surface 212 and is spaced apart from the fourth surface 212. Along the thickness direction of the second glass 220, the first surface 222 is disposed opposite to the third surface 221 and facing the interior of the vehicle 1000. The first peripheral side surface 223 is disposed around the third surface 221 and the first surface 222, and is connected between the third surface 221 and the first surface 222. The thickness of the second glass 220 is greater than or equal to 2.1 mm to ensure that the first glass 210 has a certain thickness, which helps to prevent sound waves from being transmitted to the outside of the vehicle 1000 and causing noise pollution.

[0039] An intermediate connecting layer 230 is located between the fourth surface 212 and the third surface 221, and is bonded to either the fourth surface 212 or the third surface 221 to bond the first glass 210 and the second glass 220 together to form a sandwich structure. The thickness of the intermediate connecting layer 230 is greater than or equal to 0.76 mm and less than or equal to 1.52 mm, ensuring sufficient thickness to better prevent sound waves from being transmitted to the outside of the vehicle 1000, thus improving the sound insulation effect of the window glass 200. For example, the thickness of the intermediate connecting layer 230 is 1.5 mm. The material of the intermediate connecting layer 230 may include thermoplastic materials. Thermoplastic materials include, but are not limited to, polyvinyl butyral (PVB). It should be noted that the peripheral surfaces of the window glass 200 include the first peripheral surface 223, the second peripheral surface 213, and the peripheral surface of the intermediate connecting layer 230.

[0040] The window glass 200 also includes a shielding layer (not shown). The shielding layer is disposed on the second glass 220 and located in the non-visible area 200b. The shielding layer is made of an opaque material such as ink. For example, the shielding layer can be formed on the second glass 220 by printing. The shielding layer can block visible light from passing through, improving the aesthetics of the window glass 200.

[0041] The sound-generating component 100 is mounted on the first surface 222 and located in the visible area 200a and / or the non-visible area 200b. It should be noted that since the window glass 200 is laminated glass with a certain thickness, it has a sound-insulating sandwich structure. When the sound-generating component 100 is installed on the window glass 200, the window glass 200 has good sound insulation, effectively reducing sound wave transmission to the outside of the vehicle 1000 and reducing sound pollution to the outside of the vehicle 1000 when the sound-generating component 100 is working. Experiments have shown that when the sound pressure inside the vehicle 1000 reaches 85dB, the sound pressure outside the vehicle 1000 is only 55dB, significantly reducing the sound pollution to the outside of the vehicle caused by the sound-generating component.

[0042] The sound-generating assembly 100 includes a connecting structure K, a sound guide 130, a piezoelectric film 160, and an electrode 170. The connecting structure K is installed on the side of the vehicle window 200 facing the interior of the vehicle 1000. Specifically, the connecting structure K is located on the side of the second glass 220 opposite to the first glass 210. The connecting structure K has a through hole K1 that penetrates the connecting structure K along its thickness direction. The sound guide 130 is located on the side of the connecting structure K opposite to the vehicle window 200 and covers the through hole K1. The sound guide 130, the connecting structure K, and the vehicle window 200 enclose a sound cavity Q. The sound cavity Q is a closed cavity. The piezoelectric film 160 is disposed within the sound cavity Q and installed on the connecting structure K, dividing the sound cavity Q into a first sub-cavity Q1 and a second sub-cavity Q2. The first sub-cavity Q1 is located between the vehicle window 200 and the piezoelectric film 160. The second sub-cavity Q2 is located between the piezoelectric diaphragm 160 and the sound guide 130. It should be noted that the cavity Q provides space for the vibration of the piezoelectric diaphragm 160. The piezoelectric diaphragm 160 vibrates within the cavity Q to generate sound waves, which propagate through the sound guide 130 into the vehicle interior, thus producing sound that is received by the occupants. It should be noted that the height of the cavity is greater than or equal to 1.5 mm to ensure sufficient space for the piezoelectric diaphragm 160 to vibrate, preventing the piezoelectric diaphragm 160 from touching the window glass 200 and the sound guide 130 and thus protecting it from damage. This contributes to improving the sound quality of the sound-generating assembly 100.

[0043] The connecting structure K includes a first spacer 110, a second spacer 120, a first adhesive portion 140, and a second adhesive portion 150. Along the thickness direction of the window assembly, both the first spacer 110 and the second spacer 120 are located on the side of the second glass 220 opposite to the first glass 210 and are spaced apart. The second spacer 120 is located on the side of the first spacer 110 opposite to the first glass 210. The sound guide 130 is located on the side of the second spacer 120 opposite to the first spacer 110 and is spaced apart from the second spacer 120. Both the first adhesive portion 140 and the second adhesive portion 150 are located between the second glass 220 and the sound guide 130 of the window glass 200. Along the thickness direction of the sound-generating assembly 100, the second adhesive portion 150 and the first adhesive portion 140 are spaced apart. The piezoelectric film 160 is located between the first spacer 110 and the second spacer 120, and between the first adhesive portion 140 and the second adhesive portion 150. It should be noted that the piezoelectric film 160, the first spacer 110, the first adhesive portion 140, and the window glass 200 enclose to form the first sub-sound cavity Q1, and the piezoelectric film 160, the second spacer 120, the second adhesive portion 150, and the sound guide 130 enclose to form the second sub-sound cavity Q2. The electrode 170 is mounted on the first surface 222 of the second glass 220 and is electrically connected to the piezoelectric film 160, and is located in the non-visible area 200b.

[0044] Along the thickness direction of the window assembly 3000, a first spacer 110 is spaced apart from a first surface 222. The first spacer 110 has a fifth surface 111 and a sixth surface 112. The fifth surface 111 is spaced apart from and opposite to the first surface 222. Along the thickness direction of the first spacer 110, the sixth surface 112 and the second surface 211 are disposed opposite to each other. The peripheral surfaces of the first spacer 110 are all connected between the fifth surface 111 and the sixth surface 112.

[0045] The first spacer 110 has a first hole 115. The first hole 115 penetrates the first spacer 110 along its thickness direction and is part of the sound cavity Q. That is, the first hole 115 penetrates the fifth surface 111 and the sixth surface 112. It should be noted that the through hole K1 includes the first hole 115. The thickness of the first spacer 110 is greater than or equal to 0.76 mm and less than or equal to 1.0 mm. It should be noted that the arrangement of the first spacer 110 can control the height of the sound cavity Q. Specifically, the thickness of the first spacer 110 being greater than or equal to 0.76 mm ensures that the first spacer 110 has sufficient thickness to provide sufficient height for the first sub-sound cavity Q1, thereby facilitating the vibration of the piezoelectric film 160 in the sound cavity Q, preventing the piezoelectric film 160 from contacting the second glass 220 during vibration and causing abnormal noise, which is beneficial to the sound generation assembly 100 and improves the sound generation quality of the sound generation assembly 100. While ensuring the sound-generating function of the sound-generating component 100, the thickness of the first spacer 110 is less than or equal to 1.0 mm. Limiting the thickness of the first spacer 110 helps reduce the thickness of the sound-generating component 100, increasing the flexibility and freedom of the window component 3000 during vehicle assembly. In this embodiment, the material of the first spacer 110 includes organic or inorganic materials. For example, the first spacer 110 may be a transparent plate or a glass plate.

[0046] The second spacer 120 is located on the side of the first spacer 110 facing away from the second glass 220 and is spaced apart from the first spacer 110. The second spacer 120 has a seventh surface 121 and an eighth surface 122. The seventh surface 121 is spaced apart from and opposite to the sixth surface 112. Along the thickness direction of the first spacer 110, the eighth surface 122 and the seventh surface 121 are arranged opposite to each other and facing the sound guide 130. The peripheral side of the second spacer 120 is connected between the seventh surface 121 and the eighth surface 122.

[0047] The second spacer 120 has a second hole 125. The second hole 125 penetrates the second spacer 120 along its thickness direction. That is, the second hole 125 penetrates the seventh surface 121 and the eighth surface 122. It should be noted that the through hole K1 also includes the second hole 125. The thickness of the second spacer 120 is greater than or equal to 0.76 mm and less than or equal to 1.0 mm. It should be noted that the setting of the second spacer 120 can control the height of the sound cavity Q. Specifically, the thickness of the second spacer 120 is greater than or equal to 0.76 mm, which ensures that the second spacer 120 has sufficient thickness to provide sufficient height for the second sub-sound cavity Q2 to vibrate the piezoelectric diaphragm 160. The thickness of the second spacer 120, when combined with the thickness of the first spacer 110, can make the height of the sound cavity Q greater than or equal to 1.5 mm, which can prevent the piezoelectric diaphragm 160 from touching the sound guide 130 during vibration and causing abnormal noise, thus facilitating the sound generation component 100 to produce sound. While ensuring the sound-generating function of the sound-generating component 100, the thickness of the second spacer 120 is less than or equal to 1.0 mm, thereby reducing the thickness of the sound-generating component 100 and increasing the flexibility and freedom of the window component 3000 during vehicle assembly. In this embodiment, the material of the second spacer 120 includes at least one of organic and inorganic materials. For example, the second spacer 120 may be a transparent plate or a glass plate. The sound guide 130 is located on the side of the second spacer 120 opposite to the first spacer 110 and is spaced apart from the second spacer 120, covering the second hole 125. The sound guide 130 has a ninth surface 131, a tenth surface 132, and a third peripheral side surface 133. The ninth surface 131 is disposed opposite to the first surface 222. Along the thickness direction of the sound guide 130, the tenth surface 132 and the ninth surface 131 are disposed opposite to each other, and the third peripheral side surface 133 is connected between the ninth surface 131 and the tenth surface 132. The thickness of the sound guide 130 is greater than or equal to 0.7 mm and less than or equal to 1.5 mm. A thickness greater than or equal to 0.7 mm ensures sufficient structural strength to protect the piezoelectric film 160 from damage, thus improving the structural stability of the sound-generating assembly 100. Simultaneously, a thickness less than or equal to 1.5 mm ensures sound wave conduction, transmitting the sound waves emitted by the piezoelectric film 160 into the vehicle 1000, thereby guaranteeing the sound-generating function of the sound-generating assembly 100. It should be noted that when the sound guide 130 is located in the visible area 200a, it can be made of transparent glass; when located in the non-visible area 200b, it can be made of an opaque material, such as black plastic.

[0048] The first adhesive portion 140 includes a first adhesive layer 141 and a third adhesive layer 145. The first adhesive layer 141 is located between the first spacer 110 and the window glass 200, that is, the first adhesive layer 141 is located between the fifth surface 111 and the first surface 222, and is bonded to the fifth surface 111 and the first surface 222 to connect the first spacer 110 and the second glass 220 together. The peripheral side of the first adhesive layer 141 is located on the side of the peripheral side of the first spacer 110 opposite to the first hole 115. The first adhesive layer 141 has a third hole 141a. The third hole 141a penetrates the first adhesive layer 141 along its thickness direction and communicates with the first hole 115. It should be noted that the through hole K1 also includes the third hole 141a. The third adhesive layer 145 is located on the side of the first spacer 110 opposite to the first hole 115, and is situated between the first adhesive layer 141 and the piezoelectric film 160. It covers the peripheral side of the first spacer 110 and is also connected to the first adhesive layer 141. The third adhesive layer 145 is used to fix the piezoelectric film 160, thereby fixing the piezoelectric film 160 to the first adhesive layer 141 and thus fixing the piezoelectric film 160 to the vehicle window glass 200. The third adhesive layer 145 and the first adhesive layer 141 can be integrally formed.

[0049] The first adhesive portion 140 has a light transmittance greater than or equal to 70% to ensure that the sound-generating component 100 does not affect the light transmittance of the window component 3000, thus ensuring that the sound-generating component 100 meets the light transmittance requirements for vehicle glass in GB9656-2021 "Technical Specification for Safety of Motor Vehicle Glass," thereby guaranteeing the driving safety of the vehicle 1000. Preferably, the first adhesive portion 140 has a light transmittance greater than or equal to 90% to further improve the light transmittance of the window component 3000 and enhance the driving safety of the vehicle 1000. For example, the material of the first adhesive portion 140 includes Liquid Optically Clear Adhesive (LOCA). The first adhesive portion 140 made of LOCA ensures that its transmittance is greater than or equal to 70%, thereby ensuring the light transmittance of the window component 3000 and guaranteeing the driving safety of the vehicle 1000. It should be noted that the first spacer 110 can prevent the first adhesive part 140 from entering the sound cavity Q and affecting the sound quality, which is beneficial to improving the sound quality of the window assembly 3000.

[0050] The second adhesive portion 150 includes a second adhesive layer 151 and a fourth adhesive layer 155. The second adhesive layer 151 is located between the eighth surface 122 and the ninth surface 131, and is bonded to the eighth surface 122 and the ninth surface 131 to connect the second spacer 120 and the sound guide 130 together. The peripheral side of the second adhesive layer 151 is located on the side of the peripheral side of the second spacer 120 opposite to the second hole 125. The second adhesive layer 151 has a fourth hole 151a. The fourth hole 151a penetrates the second adhesive layer 151 along its thickness direction and communicates with the second hole 125. It should be noted that the through hole K1 also includes the fourth hole 151a. The fourth adhesive layer 155 is located on the side of the second spacer 120 opposite to the second hole 125, and is located between the second adhesive layer 151 and the piezoelectric film 160, covering the peripheral side of the second spacer 120 and also connected to the second adhesive layer 151. The fourth adhesive layer 155 is used to fix the piezoelectric film 160 to the second adhesive layer 151, thereby fixing the sound conductor 130 to one side of the piezoelectric film 160. The fourth adhesive layer 155 can be integrally formed with the second adhesive layer 151.

[0051] The second adhesive portion 150 has a light transmittance greater than or equal to 70% to ensure that the sound-generating component 100 does not affect the light transmittance of the window component 3000, thus ensuring that the sound-generating component 100 meets the light transmittance requirements for vehicle glass in GB9656-2021 "Technical Specification for Safety of Motor Vehicle Glass," thereby guaranteeing the driving safety of the vehicle 1000. Preferably, the second adhesive portion 150 has a light transmittance greater than or equal to 90% to further improve the light transmittance of the window component 3000 and enhance the driving safety of the vehicle 1000. For example, the material of the second adhesive portion 150 includes Liquid Optically Clear Adhesive (LOCA). The second adhesive portion 150 made of LOCA ensures that its transmittance is greater than or equal to 70%, thereby ensuring the light transmittance of the window component 3000 and guaranteeing the driving safety of the vehicle 1000.

[0052] The piezoelectric film 160 is located between and bonded to the third adhesive layer 145 and the fourth adhesive layer 155, and is situated between the sixth surface 112 and the seventh surface 121. The piezoelectric film 160 covers the first hole 115 and the second hole 125. It should be noted that the piezoelectric film 160, the first spacer 110, the first adhesive layer 141, and the window glass 200 together form a first sub-sound cavity Q1, and the piezoelectric film 160, the second spacer 120, the second adhesive layer 151, and the sound guide 130 together form a second sub-sound cavity Q2. Along the thickness direction of the window assembly 3000, the portion of the piezoelectric film 160 located in the sound cavity Q can vibrate along the thickness direction of the sound-generating assembly 100 and generate sound waves, which are transmitted to the interior of the vehicle 1000 through the sound guide 130. The piezoelectric film 160 has a transparency greater than 85% to meet the requirements of GB9656-2021 "Technical Specification for Safety of Motor Vehicle Glass," ensuring that the piezoelectric film 160 does not affect the transparency of the window assembly 3000, allowing light to pass through and thus ensuring the driving safety of the vehicle 1000. The piezoelectric film 160 has a haze of less than 3% to meet the requirements of GB9656-2021 "Technical Specification for Safety of Motor Vehicle Glass," ensuring the clarity of the piezoelectric film 160 and thus ensuring sufficient clarity for the driver and passengers to observe the window assembly 3000, thereby ensuring the driving safety of the vehicle 1000. In this embodiment, the material of the piezoelectric film 160 includes polyvinylidene fluoride (PVDF). The piezoelectric film 160 made of PVDF has excellent mechanical properties and chemical stability. After the piezoelectric film 160 is energized... By utilizing the piezoelectric effect and flexibility of polyvinylidene fluoride material, the piezoelectric film 160 undergoes microscopic deformation to generate sound waves, which in turn drive the sound guide 130 to vibrate, thereby transmitting the sound waves into the interior of the vehicle 1000 to form a sound source. This achieves a wide-directional audio output effect, which is beneficial for the vehicle 1000 to form a surround sound effect and enhance the driving experience for passengers.

[0053] This application combines the piezoelectric film 160 with the sound guide 130 and the window glass 200. The piezoelectric film 160 vibrates to generate sound waves, which are then conducted to the interior of the vehicle 1000 through the sound guide 130. This arrangement can reduce the thickness of the window assembly 3000, thereby reducing the space of the window assembly 3000 inside the vehicle 1000. This is beneficial for the assembly of the window assembly 3000 in the vehicle 1000 and increases the flexibility of the assembly of the vehicle 1000.

[0054] Electrode 170 is located in the non-visible area and on the side of the shielding layer opposite to the second glass 220, and is electrically connected to the piezoelectric film 160. There are two electrodes 170: a first electrode 171 and a second electrode 175. Both the first electrode 171 and the second electrode 175 are located in the non-visible area 200b, are electrically connected to the piezoelectric film 160, and are spaced apart from each other. The first electrode 171 serves as the positive electrode, and the second electrode 175 serves as the negative electrode. The configuration of the first electrode 171 and the second electrode 175 powers the piezoelectric film 160, causing the piezoelectric film 160 to vibrate and produce sound.

[0055] Please see Figures 4 to 6 , Figure 4 This is a schematic diagram of the assembly structure of the first tooling assembly E1. Figure 5 This is a schematic diagram of the assembly structure of the second tooling assembly E2. Figure 6 This is a schematic diagram illustrating the assembly method of the 3000 window assembly.

[0056] This application also provides a method for assembling a window assembly 3000, used to prepare the window assembly 3000 in the above embodiments.

[0057] Step S1: Provide a first tooling assembly E1 and a second tooling assembly E2. The first tooling assembly E1 includes a first positioning tooling 10 and a sound guiding assembly H. The first positioning tooling 10 has a first positioning groove 11. The sound guiding assembly H includes a sound guiding element 130, a second spacer 120, a second adhesive layer 151, a piezoelectric film 160, and a fourth adhesive layer 155. The sound guiding element 130, the second spacer 120, the second adhesive layer 151, and the fourth adhesive layer 155 are all mounted in the first positioning groove 11. The second spacer 120 is located on the side of the sound guiding element 130 facing away from the bottom wall of the first positioning groove 11. The second adhesive layer 151 is located between the sound guiding element 130 and the second spacer 120. The piezoelectric film 160 is mounted on the side of the second spacer 120 facing away from the sound guiding element 130 and covers the first positioning groove 11. The fourth adhesive layer 155 is located between the second adhesive layer 151 and the piezoelectric film 160, and between the second spacer 120 and the groove sidewall of the first positioning groove 11, and is connected to the second adhesive layer 151. The second tooling assembly E2 includes a window glass 200, a second positioning tooling 20, a first spacer 110, a first adhesive layer 141, and a third adhesive layer 145. The second positioning tooling 20 is mounted on the surface of the window glass 200 facing the interior of the vehicle 1000. The second positioning tooling 20 is provided with a second positioning groove 21, which extends through the second positioning tooling 20 along the thickness direction of the window glass 200. The first spacer 110 is mounted in the second positioning groove 21. The first adhesive layer 141 is mounted in the second positioning groove 21 and is located between the window glass 200 and the first spacer 110. The third adhesive layer 145 is installed in the second positioning groove 21 and is located on the side of the first adhesive layer 141 away from the window glass 200, and is installed between the first spacer 110 and the groove side wall of the second positioning groove 21. The third adhesive layer 145 abuts against the groove side wall of the second positioning groove 21 and is connected to the first adhesive layer 141.

[0058] In this embodiment, step S1 can be completed through steps S11 to S21.

[0059] Step S11: A first positioning fixture 10, a sound guide 130, a second adhesive layer 151, a second spacer 120, a fourth adhesive layer 155, and a piezoelectric film 160 are provided. The first positioning fixture 10 is provided with a first positioning groove 11.

[0060] Step S12: Install the sound guide 130 into the first positioning groove 11. The sound guide 130 abuts against the bottom wall and side wall of the first positioning groove 11.

[0061] Step S13: Install the second adhesive layer 151 into the first positioning groove 11. Specifically, the second adhesive layer 151 is located on the side of the sound guide 130 away from the bottom wall of the first positioning groove 11, and abuts against the side wall of the first positioning groove 11.

[0062] Step S14: Install the second spacer 120 into the first positioning groove 11. The second spacer 120 is located on the side of the second adhesive layer 151 opposite to the sound guide 130.

[0063] Step S15: Install the fourth adhesive layer 155 into the first positioning groove 11. Specifically, the fourth adhesive layer 155 is located on the side of the second adhesive layer 151 away from the bottom wall of the first positioning groove 11, and is connected to the second adhesive layer 151. It is located between the second spacer 120 and the side wall of the first positioning groove 11, and also abuts against the side wall of the first positioning groove 11.

[0064] Step S16: The piezoelectric film 160 is installed on the side of the second spacer 120 opposite to the sound guide 130. Specifically, the piezoelectric film 160 is located on the side of the fourth adhesive layer 155 opposite to the second adhesive layer 151. The tension of the piezoelectric film 160 is greater than or equal to 2N and less than or equal to 3N, ensuring that the tension F keeps the piezoelectric film 160 in a taut state, which is beneficial for the piezoelectric film 160 to vibrate and generate sound. It should be noted that the sound guide 130, the second adhesive layer 151, the second spacer 120, the fourth adhesive layer 155, and the piezoelectric film 160 form the sound guide assembly H.

[0065] Step S17: Provide a window glass 200, a second positioning fixture 20, a first adhesive layer 141, a first partition, and a third adhesive layer 145. The second positioning fixture 20 is provided with a second positioning groove 21. The second positioning groove 21 extends through the second positioning fixture 20 along the thickness direction of the window glass 200.

[0066] Step S18: Install the second positioning fixture 20 on the surface of the window glass 200 facing the interior of the vehicle 1000.

[0067] Step S19: Install the first adhesive layer 141 into the second positioning groove 21. Specifically, the first adhesive layer 141 abuts against the surface of the window glass 200 facing the second positioning groove 21 and abuts against the groove side wall of the second positioning groove 21.

[0068] Step S20: Install the second spacer 120 into the second positioning groove 21. The second spacer 120 is located on the side of the first adhesive layer 141 opposite to the window glass 200.

[0069] Step S21: Install the third adhesive layer 145 into the second positioning groove 21. Specifically, the third adhesive layer 145 is located on the side of the first adhesive layer 141 away from the window glass 200, and is connected to the first adhesive layer 141. It is located between the second spacer 120 and the groove side wall of the second positioning groove 21, and also abuts against the groove side wall of the second positioning groove 21.

[0070] It should be noted that in step S1, the first adhesive layer, the second adhesive layer, the third adhesive layer, and the fourth adhesive layer are all cured using a photocuring process to bond the different components together. In some other embodiments, at least one of the first adhesive layer, the second adhesive layer, the third adhesive layer, and the fourth adhesive layer may be cured using a photocuring process, and this application does not impose any restrictions on this.

[0071] In this embodiment, steps S11 to S16 are the assembly process of the first tooling assembly E1, that is, the process of assembling the sound guide component H in the first positioning tooling 10. Steps S17 to S21 are the assembly process of the second tooling assembly E2. The assembly process of the first tooling assembly E1 and the assembly process of the second tooling assembly E2 can be performed in any of the following ways: First, they can be performed simultaneously. Specifically, steps S11 to S16 and steps S17 to S21 can be performed in parallel.

[0072] Second, the steps can be performed in sequence. Specifically, steps S11 to S16 can be completed first, followed by steps S17 to S21, or steps S17 to S21 can be completed first, followed by steps S11 to S16.

[0073] Third, the steps are performed alternately. Specifically, steps S11 to S21 can be performed alternately.

[0074] Step S2: Remove the sound guiding component H from the first positioning fixture 10. Specifically, remove the sound guiding component H from the first positioning groove 11. Step S3: Install the sound guiding component H into the second positioning groove 21. The piezoelectric film 160 is installed between the first spacer 110 and the second spacer 120, and the third adhesive layer 145 is located between the piezoelectric film 160 and the first adhesive layer 141, and is located on the side of the piezoelectric film 160 opposite to the fourth adhesive layer 155.

[0075] Step S4: Remove the second positioning fixture 20 from the window glass 200 to assemble the sound-generating component with the window glass 200 and obtain the window component 3000.

[0076] It should be noted that during the assembly of the window assembly 3000, the first spacer 110 and the second spacer 120 can assist the first positioning fixture 10 and the second positioning fixture 20 in positioning the piezoelectric film 160.

[0077] In the vehicle window assembly 3000 provided in this application, a sound-generating assembly 100 is installed on the vehicle window glass 200. The sound-generating assembly 100 includes a connecting structure K, a sound guide 130, and a piezoelectric film 160. The connecting structure K is installed on the side of the vehicle window glass 200 facing the interior of the vehicle 1000, and the connecting structure K has a through hole K1. The sound guide 130 is located on the side of the connecting structure K away from the vehicle window glass 200 and covers the through hole K1. The sound guide 130, the connecting structure K, and the vehicle window glass 200 enclose a sound cavity Q. The piezoelectric film 160 is installed on the connecting structure K and divides the sound cavity Q into a first sub-sound cavity Q1 and a second sub-sound cavity Q2. The first sub-sound cavity Q1 is located between the vehicle window glass 200 and the piezoelectric film 160, and the second sub-sound cavity Q2 is located between the piezoelectric film 160 and the sound guide 130. The piezoelectric film 160 vibrates within the sound cavity Q to generate sound waves, which are then conducted into the vehicle 1000 via the sound guide 130. This configuration reduces the thickness of the sound-generating component 100, increasing its flexibility in installation within the vehicle 1000 and improving the sound quality inside the vehicle 1000, thereby enhancing the driving experience for passengers. Furthermore, the sound-generating component 100 provided in this application does not obstruct passengers' view of the external environment through the window assembly 3000; therefore, the sound-generating component 100 can be located in the visible area 200a, and also in the non-visible area 200b, increasing the flexibility of its installation. In some embodiments, the sound-generating component 100 can be positioned on the sunroof, windshield, rear windshield, or side windshield to create a vehicle-wide surround sound and sky-like sound effect, providing passengers with a novel driving experience and enhanced auditory enjoyment.

[0078] The above descriptions are merely optional embodiments of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this application and are not intended to limit the patent scope of this application. At the same time, for those skilled in the art, equivalent structural transformations made based on the inventive concept of this application using the specification and drawings of this application, or direct / indirect applications in other related technical fields, are all included within the patent protection scope of this application.

Claims

1. A vehicle window assembly, characterized in that, The device includes a vehicle window glass and a sound-generating assembly. The sound-generating assembly includes a connecting structure, a sound guide, and a piezoelectric film. The connecting structure is installed on the side of the vehicle window glass facing the interior of the vehicle. The sound guide, the connecting structure, and the vehicle window glass enclose a sound cavity, and the piezoelectric film is disposed within the sound cavity.

2. The window assembly according to claim 1, characterized in that, The sound cavity is a closed sound cavity.

3. The window assembly according to claim 1, characterized in that, The connecting structure has a through hole that extends through the connecting structure along its thickness direction. The sound guide is located on the side of the connecting structure away from the window glass and covers the through hole.

4. The window assembly according to claim 1, characterized in that, The piezoelectric film is installed on the connection structure and divides the sound cavity into a first sub-sound cavity and a second sub-sound cavity. The first sub-sound cavity is located between the car window glass and the piezoelectric film, and the second sub-sound cavity is located between the piezoelectric film and the sound guide.

5. The window assembly according to claim 4, characterized in that, The connection structure includes a first spacer, a second spacer, a first adhesive layer, and a second adhesive layer. The first spacer is spaced apart from the vehicle window glass. The first spacer has a first hole that penetrates the first spacer along its thickness. The second spacer is located on the side of the first spacer away from the vehicle window glass and is spaced apart from the first spacer. The second spacer has a second hole that penetrates the second spacer along its thickness. The piezoelectric film is located between the first spacer and the second spacer, and covers the first hole and the second hole. The piezoelectric film, the first spacer, the first adhesive layer and the window glass surround to form the first sub-sound cavity, and the piezoelectric film, the second spacer, the second adhesive layer and the sound guide surround to form the second sub-sound cavity.

6. The window assembly according to claim 5, characterized in that, The first adhesive layer is located between the first spacer and the window glass. The first adhesive layer has a third hole, which penetrates the first adhesive layer along the thickness direction and communicates with the first hole. The second adhesive layer is located between the second spacer and the sound guide. The second adhesive layer has a fourth hole that penetrates the second adhesive layer along its thickness direction and communicates with the second hole.

7. The window assembly according to claim 6, characterized in that, The sound-generating component further includes a third adhesive layer located on the side of the first spacer opposite to the first hole and between the first adhesive layer and the piezoelectric film.

8. The window assembly according to claim 7, characterized in that, The sound-generating component further includes a fourth adhesive layer located on the side of the second spacer opposite to the second hole and between the second adhesive layer and the piezoelectric film.

9. The window assembly according to any one of claims 1 to 8, characterized in that, The height of the sound cavity is greater than or equal to 1.5 mm.

10. The window assembly according to any one of claims 5 to 8, characterized in that, The thickness of the first spacer is greater than or equal to 0.76 mm, and / or the thickness of the second spacer is greater than or equal to 0.76 mm.

11. The window assembly according to claim 10, characterized in that, The thickness of the first spacer is less than or equal to 1.0 mm, and / or the thickness of the second spacer is less than or equal to 1.0 mm.

12. The window assembly according to any one of claims 1 to 8, characterized in that, The piezoelectric film has a transparency of 85% or greater and a haze of 3% or less.

13. The window assembly according to any one of claims 1 to 8, characterized in that, The material of the piezoelectric film includes polyvinylidene fluoride.

14. The window assembly according to any one of claims 1 to 8, characterized in that, The thickness of the sound guide is greater than or equal to 0.7 mm and less than or equal to 1.5 mm.

15. The window assembly according to any one of claims 5 to 8, characterized in that, The material of the first adhesive layer includes optically transparent adhesive, and / or the material of the second adhesive layer includes optically transparent adhesive.

16. The window assembly according to any one of claims 1 to 8, characterized in that, The vehicle window glass has a visible area and a non-visible area, the non-visible area being arranged around the visible area. The vehicle window assembly also includes a first electrode and a second electrode, both of which are located in the non-visible area and are electrically connected to the piezoelectric film, and are spaced apart from each other.

17. The window assembly according to any one of claims 1 to 8, characterized in that, The vehicle window glass includes a first glass, a second glass, and an intermediate connecting layer. The first glass is the glass facing the outside of the vehicle. Along the thickness direction of the vehicle window glass, the second glass and the first glass are spaced apart. The intermediate connecting layer is located between the first glass and the second glass. The connecting structure is located on the side of the second glass away from the first glass.

18. A vehicle, characterized in that, It includes a vehicle body and a window assembly as described in any one of claims 1 to 17, the window assembly being mounted on the vehicle body.

19. A method for assembling a vehicle window assembly, characterized in that, The assembly method of the window assembly includes: A first tooling assembly and a second tooling assembly are provided. The first tooling assembly includes a first positioning tooling and a sound guiding component. The first positioning tooling has a first positioning groove. The sound guiding component includes a sound guiding element, a second spacer, and a piezoelectric film. The sound guiding element and the second spacer are both installed in the first positioning groove. The second spacer is located on the side of the sound guiding element opposite to the bottom wall of the first positioning groove. The piezoelectric film is installed on the side of the second spacer opposite to the sound guiding element. The second tooling assembly includes a window glass, a second positioning tooling, and a first spacer. The second positioning tooling is installed on the surface of the window glass facing the interior of the vehicle. The second positioning tooling has a second positioning groove that extends through the second positioning tooling along the thickness direction of the window glass. The first spacer is installed in the second positioning groove. Remove the sound guiding component from the first positioning fixture; The sound guiding component is installed in the second positioning groove, wherein the piezoelectric film is installed between the first spacer and the second spacer; Remove the second positioning fixture from the vehicle window glass.

20. The assembly method according to claim 19, characterized in that, The tension of the piezoelectric film is greater than or equal to 2N and less than or equal to 3N.

21. The assembly method according to claim 19 or 20, characterized in that, The assembly method of the window assembly also includes: In the step of providing the first tooling assembly and the second tooling assembly, the sound guiding component further includes a second adhesive layer and a fourth adhesive layer. The second adhesive layer is installed in the first positioning groove and is located between the sound guiding member and the second spacer. The fourth adhesive layer is installed in the first positioning groove and is located between the second adhesive layer and the piezoelectric film, and is located between the second spacer and the groove sidewall of the first positioning groove, and is also connected to the second adhesive layer. The second tooling assembly further includes a first adhesive layer and a third adhesive layer. The first adhesive layer is installed in the second positioning groove and is located between the window glass and the first spacer. The third adhesive layer is installed in the second positioning groove and is located on the side of the first adhesive layer opposite to the window glass, and is located between the first spacer and the groove sidewall of the second positioning groove, and is also connected to the first adhesive layer. In the step of installing the sound guiding component into the second positioning groove, the third adhesive layer is located between the piezoelectric film and the first adhesive layer.

22. The assembly method according to claim 21, characterized in that, At least one of the first adhesive layer, the second adhesive layer, the third adhesive layer, and the fourth adhesive layer is cured using a photocuring process.

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