Vehicle body structure with glass diaphragm

Abstract

A vehicle body structure (10) with a glass diaphragm includes a glass diaphragm (16) configured to include a window glass (18) that closes an opening (22) of a vehicle body, a resin layer (30) attached to a peripheral edge of a surface of the window glass (18) on a vehicle interior side, and a vibrator (26) attached to a surface of the window glass (18) on a vehicle interior side. The minimum resonance frequency f0 determined on the basis of the spring constant K1 of the resin layer (30), the spring constant K2 of the vibrator (26), and the mass M of the vibrator (26) is 200 Hz or less.

Description

Technical Field

[0001] The present disclosure relates to a vehicle body structure with a glass vibration plate. Background Art

[0002] In recent years, research has been conducted on technologies that allow glass plates to function as speakers by vibrating them. International Publication No. 2022 / 009180 discloses a structure in which a transducer is sealed in laminated glass having an outer glass layer, an inner glass layer, and an intermediate layer, thereby allowing laminated glass to function as a speaker. In addition, U.S. Patent Application Publication No. 2015 / 0298656 discloses a structure in which a plurality of exciters are installed on a windshield of a vehicle, thereby allowing the windshield to function as a speaker.

[0003] However, in a structure in which glass functions as a speaker, it is difficult to output high-quality sound in a wide range, and there is room for improvement from the viewpoint of improving the sound quality of bass in particular. Summary of the invention

[0004] An object of the present disclosure is to provide a vehicle body structure with a glass diaphragm that can improve the sound quality of bass in a vehicle body structure with a glass diaphragm that functions as a speaker by vibrating glass.

[0005] The vehicle body structure with a glass vibration plate involved in the present disclosure is characterized in that it has a glass vibration plate, which is composed of a window glass that closes the opening of the vehicle body, a resin layer installed on the periphery of the surface of the window glass on the inner side of the vehicle interior, and a vibrator installed on the surface of the window glass on the inner side of the vehicle interior. When the spring constant of the resin layer is set to K1, the spring constant of the vibrator is set to K2, and the mass of the vibrator is set to M, the minimum resonance frequency f0 calculated by the following formula is below 200 Hz.

[0006] Formula 1:

[0007]

[0008] In the vehicle body structure with a glass diaphragm according to the present disclosure, the sound quality of bass can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic perspective view of a vehicle including a vehicle body structure with a glass diaphragm according to the embodiment, as seen from an oblique rear side.

[0010] Figure 2 This is a diagram showing an enlarged view of a main portion of a vehicle body structure with a glass diaphragm according to an embodiment, viewed from the vehicle width direction.

[0011] Figure 3It means use Figure 2 This is a cross-sectional view of the state after cutting along line 3-3.

[0012] Figure 4 This is a model diagram schematically showing the window glass and the resin layer.

[0013] Figure 5 It means use Figure 4 This is a cross-sectional view of the state after cutting along line 5-5.

[0014] Figure 6 This is a model diagram that schematically shows the interior space of a vehicle and the window glass.

[0015] Figure 7 It is a diagram showing a modified example of the vehicle body structure with a glass diaphragm.

[0016] Figure 8 It means use Figure 7 A cross-sectional view of the state after the line 8-8 is cut.

[0017] Fig. 9 It is a cross-sectional view showing a modified example of the vehicle body structure with a glass diaphragm.

[0018] Fig.10 It is a diagram showing a modified example of the vehicle body structure with a glass diaphragm.

[0019] Fig.11 It is a diagram showing a modified example of the vehicle body structure with a glass diaphragm.

[0020] Fig.12 It means use Fig.11 A cross-sectional view showing the state after the 12-12 line is cut.

[0021] Fig.13 It is a cross-sectional view showing a modified example of the vehicle body structure with a glass diaphragm.

[0022] Fig.14 It is a cross-sectional view showing a modified example of the vehicle body structure with a glass diaphragm. DETAILED DESCRIPTION

[0023] A vehicle body structure 10 with a glass diaphragm according to an embodiment will be described with reference to the drawings.

[0024] (Overall Structure of Vehicle Body Structure 10 with Glass Vibration Plate)

[0025] Figure 1 1 is a schematic perspective view of a vehicle having a body structure with a glass vibration plate, viewed from the oblique rear. Figure 1As shown, on the vehicle body side of the vehicle V to which the vehicle body structure 10 with a glass vibration plate of the present embodiment is applied, a front side window glass 12, a rear side window glass 14, and a rear triangular window glass 18 are provided in order from the front side of the vehicle. The front side window glass 12, the rear side window glass 14, and the rear triangular window glass 18 are window glasses provided on the vehicle body side on the left and right sides of the vehicle V and partitioning the interior of the vehicle from the exterior of the vehicle.

[0026] The front side window glass 12 is mostly formed by so-called single-plate glass composed of a single glass plate, and is installed on the vehicle body in a liftable manner. In addition, the front side window glass 12 can also be laminated glass. Laminated glass refers to glass formed by sandwiching an intermediate layer made of resin between two glass plates and pressing them together.

[0027] The rear side window glass 14 is arranged at a position closer to the rear side of the vehicle than the front side window glass 12, and is formed of a single plate glass. In addition, the rear side window glass 14 is installed on the vehicle body in a manner that it can be raised and lowered. In addition, the rear side window glass 14 can also be a laminated glass.

[0028] The rear quarter window glass 18 is a fixed window that is disposed at a position closer to the rear side of the vehicle than the rear side window glass 14 and is fixed to the vehicle body in a state that it cannot be raised or lowered. In addition, as an example, the rear quarter window glass 18 of this embodiment is formed of laminated glass. Figure 2 As shown in FIG. 1 , a vibrator 26 is attached to the rear quarter window glass 18. Therefore, the glass vibration plate 16 is configured to include the rear quarter window glass 18 and the vibrator 26. The details of the glass vibration plate 16 will be described later.

[0029] exist Figure 1 In the embodiment, a rear window glass 20 is provided behind the vehicle V. The rear window glass 20 is formed of a single plate glass and is fixed to the vehicle body in a state that it cannot be raised or lowered. In addition, the rear window glass 20 may also be a laminated glass.

[0030] A windshield (not shown) is provided in front of the vehicle V. The windshield is formed of laminated glass and is fixed to the vehicle body in a state that it cannot be raised or lowered.

[0031] A front triangular window glass (not shown) is arranged between the windshield and the front side window glass 12. The front triangular window glass is arranged on the left and right sides of the vehicle V and is formed by a single plate glass. In addition, the front triangular window glass is fixed to the vehicle body in a state that it cannot be raised or lowered. In addition, the front triangular window glass can also be a laminated glass.

[0032] In addition, although the glass vibration plate 16 of the present embodiment is applied to the rear quarter window glass 18, it can also be applied to other window glasses. For example, it can also function as a glass vibration plate by installing the vibrator 26 on the windshield, the rear window glass 20, and the front quarter window glass. In addition, in the case of a vehicle with a sunroof glass on the top of the vehicle body, it can also function as a glass vibration plate by installing the vibrator 26 on the sunroof glass. In addition, when each window glass is used as a glass vibration plate, it is preferred to use laminated glass from the point of view of improving the sound quality effect.

[0033] Figure 2 This is an enlarged view of the main part of the vehicle body structure with a glass diaphragm, viewed from the normal direction of the main surface of the glass diaphragm. Figure 3 This is an enlarged view of the main part of the vehicle body structure with a glass diaphragm, viewed from the cross-sectional direction of the glass diaphragm. Figure 2 and Figure 3 As shown, the rear quarter window glass 18 is fixed to the periphery of the opening 22 formed in the side surface of the vehicle body via a resin layer 30 , and the opening 22 of the vehicle body is closed by the rear quarter window glass 18 .

[0034] Here, as an object of the glass vibration plate to which the vibrator 26 is installed, the rear triangular window glass 18 is taken as an example for explanation. The rear triangular window glass 18 is a laminated glass that is configured to include a first glass plate 18A arranged on the inner side of the vehicle interior, a second glass plate 18B arranged on the outer side of the vehicle interior, and an intermediate layer 18C clamped between the first glass plate 18A and the second glass plate 18B. In addition, the rear triangular window glass 18 can also be composed of a single glass plate, but from the viewpoint of suppressing the resonant vibration of the glass, it is preferred that the rear triangular window glass 18 be a laminated glass. In the case where the rear triangular window glass 18 is composed of a single glass plate, it is also possible to control it in a manner that does not output a sound of a frequency that generates resonant vibration. In addition, the thickness of the laminated glass, i.e., the total thickness of the first glass plate 18A, the second glass plate 18B, and the intermediate layer 18C, is preferably greater than 1 mm, more preferably greater than 2 mm, and further preferably greater than 3 mm. Thereby, the laminated glass can have the required sufficient strength.

[0035] In the present embodiment, the first glass plate 18A and the second glass plate 18B are formed of transparent or translucent inorganic glass. In addition, the present invention is not limited thereto, and the first glass plate 18A and the second glass plate 18B may be formed of organic glass. Examples of organic glass include PMMA (Polymethyl methacrylate) resin, PC (polycarbonate) resin, PS (polystyrene) resin, PET (Polyethyleneterephthalate) resin, and cellulose resin. The thickness of each of the first glass plate 18A and the second glass plate 18B is preferably thinner when used as a glass vibration plate, preferably 5.0 mm or less, more preferably 3.0 mm or less, and further preferably 1.5 mm or less. In addition, from the perspective of the strength of the window glass, the thickness of each of the first glass plate 18A and the second glass plate 18B is preferably 0.5 mm or more, more preferably 1.0 mm or more, and further preferably 1.2 mm or more. The thickness of the first glass plate 18A and the thickness of the second glass plate 18B may be the same or different.

[0036] The intermediate layer 18C is formed of a transparent polyvinyl butyral (PVB) resin film, an ethylene-vinyl acetate copolymer (EVA) resin film, polyurethane, polyethylene terephthalate, polycarbonate or other resin film. In addition, a material that improves sound insulation and a material that absorbs infrared rays may be added to the intermediate layer 18C. In addition, the intermediate layer 18C is not limited to a resin film, and a gel layer, an adhesive layer, a liquid layer, a sol layer or a grease layer may also be mentioned. The thickness of the intermediate layer 18C can be set to, for example, not less than 1 nm and not more than 1.0 mm.

[0037] A shielding layer 24 for shielding visible light is provided at least in a portion of the peripheral portion of the rear quarter window glass 18 . In the present embodiment, as an example, the shielding layer 24 is provided all around the peripheral portion of the rear quarter window glass 18 .

[0038] The shielding layer 24 is formed of a material mainly composed of ceramics, and is disposed on the surface of the second glass plate 18B facing the vehicle interior. Thus, ultraviolet light is blocked by the shielding layer 24, and degradation of the resin layer 30 can be suppressed. The color of the opaque colored ceramic layer constituting the shielding layer 24 can be set arbitrarily, but is preferably a dark color such as black, brown, gray, dark navy blue, or white, and more preferably black.

[0039] The vibrator 26 is mounted on the inner side of the rear quarter window glass 18. Specifically, a mounting member (not shown) is fixed to the shielding layer 24 via a fixing member 28 such as an adhesive, and the vibrator 26 is mounted via the mounting member. The mounting member may be made of metal or resin. Figure 3 As shown, the vibrator 26 may be directly mounted (adhesively fixed) to the fixing member 28 without interposing the mounting member. In this way, the vibrator 26 is mounted at a position overlapping with the shielding layer 24 when viewed in the plate thickness direction of the rear quarter window glass 18.

[0040] Since visible light is shielded by the shielding layer 24, by installing the vibrator 26 at a position overlapping with the shielding layer 24, it is possible to suppress the vibrator 26 from being seen from the outside of the vehicle V, thereby ensuring the appearance design of the vehicle V. In particular, since the structure is such that the vibrator 26 is suppressed from being seen from the outside of the vehicle V by using the shielding layer 24 provided to suppress the degradation of the resin layer 30, there is no need to separately provide a dedicated shielding member for hiding the vibrator 26. In addition, the vibrator 26 can be surrounded by a frame (not shown) protruding to the inside of the vehicle interior. By adopting this structure, it is possible to suppress the vibrator from being damaged by contact from inside the vehicle interior. For example, the vibrator 26 can also be covered from the inside of the vehicle interior by a resin frame formed integrally with the pillar decoration.

[0041] The vibrator 26 is connected to a power source (not shown) and vibrates the rear quarter window glass 18 according to an input electrical signal. As an example, the vibrator 26 of the present embodiment is a voice coil motor including a coil portion and a magnetic circuit, one of which is fixed to the rear quarter window glass 18 via a mounting component, and the other is configured to be relatively movable relative to the rear quarter window glass 18. Thus, when current flows in the coil portion, vibration is generated due to the interaction between the coil portion and the magnetic circuit, causing the rear quarter window glass 18 to vibrate. The vibrator 26 is not limited to a voice coil motor, and as long as it is an actuator that can transmit the desired vibration to the rear quarter window glass 18, an actuator other than a voice coil motor such as a piezoelectric method can be used.

[0042] The resin layer 30 is an adhesive layer extending all around the periphery of the rear quarter window glass 18 and used for fixing to the vehicle body. The resin layer 30 is composed of at least one resin selected from the group consisting of polyurethane, phenol, butyl, synthetic rubber, acrylic, epoxy, silicone, epoxy silicone, and polyvinyl chloride.

[0043] As an example, the resin layer 30 of the present embodiment is configured to include a moisture-curing polyurethane adhesive. In addition, a structure in which a primer is pre-installed at the opening 22 of the vehicle body and the rear triangular window glass 18 can also be adopted. In this case, for example, when a moisture-curing polyurethane adhesive is used, a primer containing at least one of polyol, polyisocyanate, silane coupling agent, carbon black, silica particles, etc. can be applied to the opening 22 of the vehicle body as a structure of a vehicle body primer and a glass primer. In addition, a primer-free structure in which a vehicle body primer and a glass primer are not provided can also be adopted.

[0044] A sealing material may also be arranged at the opening 22 of the vehicle body. In this case, the sealing material may be arranged all around the opening 22, or may be arranged only at a portion of the opening 22. The sealing material is formed of a rubber member and is attached to the surface of the rear quarter window glass 18 on the inner side of the vehicle body by a known double-sided tape or adhesive. The sealing material may also have a protrusion that abuts against the opening 22 of the vehicle body (the vehicle body). The sealing material is arranged only on the inner side of the rear quarter window glass 18, but may also be arranged on the inner side and the end face of the rear quarter window glass 18. In addition, as a sealing material, a weather strip may also be embedded and mounted on the outer peripheral edge of the rear quarter window glass 18 along the opening 22. In addition, the sealing material may be formed integrally with the rear quarter window glass 18 by injection molding a resin around the rear quarter window glass 18. A sealing strip 32 may also be provided. In this case, the sealing strip 32 is arranged all around the opening 22 and supports the rear quarter window glass 18. In addition, the weather strip 32 may be formed of a rubber member and provided to cover a part of the resin layer 30 .

[0045] (Minimum resonant frequency f0)

[0046] Figure 4 is a model diagram schematically showing a fixed window mounted on a vehicle body via a resin layer. Figure 5 yes Figure 4 Cross-sectional view at line 5-5. Figure 6 This is a model diagram schematically showing the interior space of the vehicle and the window glass (fixed window). Figures 4 to 6 The model diagram shown in FIG. 1 is used to explain the lowest resonance frequency f0 of the glass vibration plate 16 of this embodiment. Figure 4 In the figure, the rear quarter window glass 18 is simplified for the sake of convenience, but it is actually a laminated glass including two glass plates and an intermediate layer.

[0047] Here, when the spring constant of the resin layer 30 is set to K1, the spring constant of the vibrator 26 is set to K2, and the mass of the vibrator 26 is set to M, the minimum resonance frequency f0 is obtained by the following formula 1. The details of the spring constant K1 of the resin layer 30 will be described later. In addition, even if a plurality of vibrators 26 are installed in the rear quarter window glass 18 (fixed window), the above M can be defined as the mass of one vibrator 26.

[0048] Formula 1:

[0049]

[0050] In the vehicle body structure 10 with a glass vibration plate involved in this embodiment, the minimum resonance frequency f0 obtained by equation 1 is designed to be in the range of 20 Hz to 200 Hz. The minimum resonance frequency f0 is preferably designed to be less than 200 Hz, more preferably designed to be less than 150 Hz, and further preferably designed to be less than 100 Hz. In this way, by designing the minimum resonance frequency f0 of the vehicle body structure 10 with a glass vibration plate to be in the above range, the sound quality of the bass can be improved. In addition, in this embodiment, in order to reduce the minimum resonance frequency f0, it is preferred to design both the spring constants K1 and K2 to be smaller.

[0051] The spring constant K2 of the vibrator 26 is determined by the material and shape of the spring member supporting the movable portion constituting the vibrator 26. Therefore, by selecting a relatively soft material as the spring member of the vibrator 26, the spring constant K2 can be reduced.

[0052] In the vehicle body structure 10 with a glass diaphragm according to the present embodiment, the minimum frequency f0' obtained by Expression 2 is preferably designed to be within a range of 20 Hz to 200 Hz.

[0053] Formula 2:

[0054]

[0055] Here, the spring constant K3 is a spring constant based on the vehicle interior space of the vehicle body. The vehicle interior space may be compressed air, and K3 may be a spring constant based on the compressed air in the vehicle interior space. In the vehicle body structure 10 with a glass vibration plate according to the present embodiment, the minimum resonance frequency f0' obtained by equation 2 is designed to be in the range of 20 Hz to 200 Hz. The minimum resonance frequency f0' is preferably designed to be less than 200 Hz, more preferably designed to be less than 150 Hz, and further preferably designed to be less than 100 Hz.

[0056] In addition, when the specific heat ratio of air is γ, the atmospheric pressure is P0, and the area of ​​the inner side of the vehicle interior of the glass diaphragm 16 is A glass, the length to the end portion in the vehicle interior facing the glass vibration plate 16 is defined as L room When , the spring constant K3 is obtained by the following formula 3. That is, the spring constant K3 becomes the spring constant of the so-called air spring.

[0057] Formula 3:

[0058]

[0059] Here, if Figure 4 As shown, the area A of the glass diaphragm 16 on the inner side of the vehicle interior is glass The area A of the glass diaphragm 16 when viewed from the inner side of the vehicle interior. glass Alternatively, the area may be calculated as the area of ​​the portion exposed from the opening 22 of the vehicle body to the inner side of the vehicle interior.

[0060] The length L to the end portion in the vehicle interior facing the glass diaphragm 16 is room ,like Figure 6 As shown in FIG. 1 , when the glass vibration plate 16 is provided on the side of the vehicle body, the length of the vehicle interior space to the side of the vehicle body on the opposite side is L. For example, when the rear quarter window glass 18 provided on the left side of the vehicle body is used as the glass vibration plate 16, the horizontal distance from the glass vibration plate 16 to the right side of the vehicle body is L. room .

[0061] For example, when the rear window glass 20 provided at the rear of the vehicle body is used as the glass diaphragm 16, the horizontal distance from the glass diaphragm 16 to the front of the vehicle body is a length L. room That is, the horizontal distance from the rear window glass 20 to the windshield is the length L. room .

[0062] When the sunroof glass installed on the top of the vehicle body functions as a glass diaphragm, the vertical distance from the glass diaphragm to the vehicle floor is L room .

[0063] Since the spring constant K3 is obtained from the above formula 3, the area A glass Relative to length L room The larger the ratio, the larger the spring constant K3 and the larger the area A glass Relative to length L room The smaller the ratio, the smaller the spring constant K3.

[0064] In other words, for the spring constant K3, the length L room Relative to area A glass The larger the ratio, the smaller the spring constant K3 and the length Lroom Relative to area A glass The smaller the ratio is, the larger the spring constant K3 is. Therefore, in a structure where the interior space of the vehicle V is wide, the spring constant K3 can be reduced. In addition, in a structure where the interior space of a small vehicle is narrow, by reducing the area A of the glass vibration plate 16 glass , which can suppress the spring constant K3 from increasing.

[0065] On the other hand, the spring constant K1 is a spring constant whose components are the elasticity of rubber parts such as the sealing strip 32 connecting the glass to the vehicle body, and the adhesive connecting the glass to the vehicle body. Although the rubber parts connecting the glass to the vehicle body are sometimes not provided for reasons such as the design of the vehicle model, the resin layer 30 exists regardless of the vehicle model, for example, when the rear window glass or the windshield is connected to the vehicle body. When the length of the resin layer 30 in the extension direction along the periphery of the opening 22 is set to L, the cross-sectional area of ​​the cross section of the resin layer 30 perpendicular to the extension direction is set to A, and the Young's modulus of the resin layer 30 is set to E, the spring constant K1 of the resin layer 30 is calculated by the following formula 4, wherein the unit of the above L is m, and the unit of the above A is m 2 , the unit of E above is Pa.

[0066] Formula 4:

[0067]

[0068] Here, if Figure 4 As shown, the resin layer 30 of the present embodiment extends all around the peripheral portion of the glass diaphragm 16 . Therefore, the length L of the resin layer 30 in the extending direction is the same as the circumference of the peripheral portion of the glass diaphragm 16 .

[0069] exist Figure 5 , the cross-sectional area A of the resin layer 30 is obtained by multiplying the width W of the resin layer 30 by the thickness T of the resin layer 30 .

[0070] Here, since the length L of the resin layer 30 in the extending direction and the cross-sectional area A of the resin layer 30 are determined based on the size of the vehicle V, it is preferable to design the Young's modulus E of the resin layer 30 to be small in order to reduce K1.

[0071] In this embodiment, the resin layer 30 is designed to satisfy the following conditions: in the frequency range of 20 Hz to 20000 Hz, the Young's modulus E is 10 8 Pa or less. In addition, the resin layer 30 preferably satisfies the following conditions: in the range of 10°C to 30°C, the Young's modulus E is 10 8 Pa or less. In addition, the resin layer 30 more preferably satisfies the following conditions: in the range of 0°C to 40°C, the Young's modulus E is 10 8Pa or less, and more preferably satisfying the following conditions: in the range of -20°C to 60°C, the Young's modulus E is 10 8 Pa or less, and particularly preferably satisfying the following conditions: in the range of -40°C to 80°C, the Young's modulus E is 10 8 Below Pa.

[0072] The physical properties of the resin layer 30 can be confirmed by, for example, measuring the Young's modulus E at multiple frequencies such as 1, 3, 5, 10, ... Hz and a wide temperature range using a rheometer (MCR-320, manufactured by Anton Paar Co., Ltd.), a dynamic viscoelasticity measuring device (DVA-200, manufactured by IT Measurement & Control Co., Ltd.), etc., and preparing a master curve converted by the time-temperature conversion algorithm based on the measurement results.

[0073] The vehicle body structure 10 with a glass vibration plate according to the embodiment has been described above, but it can be implemented in various ways without departing from the scope of the present disclosure. For example, in the above embodiment, the vehicle body structure 10 with a glass vibration plate is applied to a single-box vehicle, but it is not limited to this and can also be applied to other vehicle models.

[0074] In addition, in the above embodiment, a structure in which one vibrator 26 is installed on the rear quarter window glass 18 is adopted, but the present invention is not limited thereto. For example, the vibrator 26 may be installed on the rear window glass 20. In this case, one vibrator 26 may be installed on each corner of the upper side or the lower side of the rear window glass 20, and a total of two vibrators 26 may be installed. The rear window glass 20 is preferably a laminated glass. In addition, for example, a structure in which the vibrators 26 are installed on each of the four corners of the rear window glass 20 may also be adopted.

[0075] Figure 7 This is a modification of the vehicle body structure 10 with a glass diaphragm according to the embodiment. Figure 8 It is used Figure 7 The same reference numerals are given to the same structures as those in the embodiment, and the description of the same structures is sometimes omitted.

[0076] like Figure 7 and Figure 8As shown, an adhesive 34 is provided around the periphery of the rear quarter window glass 18 and the periphery of the glass vibration plate 16. In addition, a plurality of resin layers 30 are arranged along the periphery of the adhesive 34. As an example, the adhesive 34 is configured as an adhesive containing a moisture-curing polyurethane system. In addition, a structure in which a primer is pre-provided on the opening portion 22 of the vehicle body and the rear quarter window glass 18 may also be adopted. In this case, for example, when a moisture-curing polyurethane system adhesive is used, a primer containing at least one of polyol, polyisocyanate, silane coupling agent, carbon black, silica particles, etc. may be applied to the opening portion 22 of the vehicle body as a structure of a vehicle body primer and a glass primer. In addition, a primer-free structure in which a vehicle body primer and a glass primer are not provided may also be adopted.

[0077] The resin layer 34 is preferably a resin for adjusting the spring constant. For an example of the resin for adjusting the spring constant, as rubber or elastomer material, there are natural rubber, chloroprene rubber, butyl rubber, ethylene propylene rubber, ethylene propylene diene rubber, nitrile rubber, hydrogenated nitrile rubber, epichlorohydrin rubber, styrene butadiene rubber, silicone rubber, polyurethane rubber, fluororubber, acrylic rubber, chlorosulfonated polyethylene, olefin thermoplastic elastomer, styrene thermoplastic elastomer, polyurethane thermoplastic elastomer, net time meter (Japanese: net time meter) system thermoplastic elastomer, etc. In addition, as plastic material or foam material, vinyl chloride, nylon, nylon 66, polyethylene terephthalate, polybutylene terephthalate, acrylic acid, silicone, fluororesin, cyanoacrylate, polysulfone, polystyrene, polyamide, polyethylene, polyether, polypropylene, polyurethane, polyimide, etc. In addition, they have no restriction on adhesion.

[0078] When the spring constant K1 of the resin layer 30 is higher than the spring constant of the adhesive 34, the spring constant of the rubber dominates the spring constant K1 of the resin layer 30. On the other hand, when the spring constant K1 of the resin layer 30 is lower than the spring constant of the adhesive 34, the resin layer 30 can be used to adjust the height of the rear quarter window glass 18 and the opening 22, assist in fixing, etc.

[0079] like Figure 7 and Figure 8 As shown in FIG. 1 , the resin layer 30 may be disposed at a position closer to the outer peripheral edge of the rear quarter window glass 18 than the adhesive 34. Fig. 9 As shown in FIG. 1 , the resin layer 30 may also be disposed on the center of gravity side (inner side) of the rear quarter window glass 18. Fig.10 As shown in FIG. 1 , the resin layer 30 may be disposed all around the periphery of the glass diaphragm 16 .

[0080] Fig.11 This is a modification of the vehicle body structure 10 with a glass diaphragm according to the embodiment. Fig.12 It is used Fig.11 The cross-sectional view after cutting along line 12-12. Fig.11 and Fig.12 As shown in FIG. 1 , the resin layer 30 may also have a C-shaped cross section that covers the outer periphery of the rear quarter window glass 18. Fig.13 As shown, the resin layer 30 may have an L-shaped cross section so as to cover the inner surface and end surface of the rear quarter window glass 18. Only one resin layer 30 may be provided, or a plurality of resin layers may be provided.

[0081] In addition, the resin layer 30 may also be attached to the rear quarter window glass 18 by means of double-sided tape or other known adhesives. Fig.14 As shown, the resin layer 30 may be mounted on a clamp member 35. The clamp member 35 is a fixing auxiliary tool used to fix the rear quarter window glass 18 so that positional displacement does not occur until the adhesive 34 is cured when the rear quarter window glass 18 is bonded to the opening portion 22 of the vehicle body. As an example, the clamp member 35 includes a base portion 35A bonded to the rear quarter window glass 18, a column portion 35B, and a terminal portion 35C, and the terminal portion 35C is engaged with a hole provided in the opening portion 22, thereby fixing the rear quarter window glass 18 to the opening portion 22 of the vehicle body. By mounting the resin layer 30 on the clamp member 35, the spring constant K1 of the resin layer 30 can be adjusted, and it can also function as a fixing auxiliary unit to the vehicle body.

[0082] The entire disclosure of Japanese Patent Application No. 2022-083200 is incorporated into this specification by reference.

[0083] All documents, patent applications, and technical standards described in this specification are incorporated herein by reference as if each document, patent application, and technical standard was specifically and individually described as being incorporated by reference.

[0084] Description of Reference Numerals

[0085] 10...body structure with glass vibration plate; 16...glass vibration plate; 18...rear quarter window glass (window glass); 18A...first glass plate; 18B...second glass plate; 18C...middle layer; 22...opening; 24...shielding layer; 26...vibrator; 28...fixing component; 30...resin layer.

Claims

1. A vehicle body structure with a glass vibration plate, wherein: A glass vibration plate is provided, the glass vibration plate comprising a window glass for closing an opening of a vehicle body, a resin layer attached to the periphery of a surface of the window glass on the vehicle interior side, and a vibrator attached to the surface of the window glass on the vehicle interior side, When the spring constant of the resin layer is K1, the spring constant of the vibrator is K2, and the mass of the vibrator is M, the minimum resonance frequency f0 obtained by the following formula is 200 Hz or less, Formula 1:

2. The vehicle body structure with a glass diaphragm according to claim 1, wherein: When the spring constant based on the internal space of the vehicle compartment is defined as K3, the minimum resonance frequency f0' obtained from the following formula is 200 Hz or less. Formula 2:

3. The vehicle body structure with a glass diaphragm according to claim 1 or 2, wherein: The window glass is a laminated glass including a first glass sheet disposed on the inner side of the vehicle interior, a second glass sheet disposed on the outer side of the vehicle interior, and an intermediate layer sandwiched between the first glass sheet and the second glass sheet.

4. The vehicle body structure with a glass diaphragm according to any one of claims 1 to 3, wherein: When the length of the resin layer extending along the periphery of the opening in the extension direction is set to L, the cross-sectional area of ​​the resin layer perpendicular to the extension direction is set to A, and the Young's modulus of the resin layer is set to E, the spring constant K1 is calculated by the following formula: Formula 3: Wherein, the unit of L is m, the unit of A is m 2 , the unit of E is Pa.

5. The vehicle body structure with a glass diaphragm according to claim 4, wherein: The resin layer meets the following conditions: in the frequency range of 20 Hz to 20000 Hz, the Young's modulus E is 10 5 Pa and above 10 8 Below Pa.

6. The vehicle body structure with a glass diaphragm according to claim 5, wherein: The resin layer meets the following conditions: in the range of 10°C to 30°C, the Young's modulus E is 10 8 Below Pa.

7. The vehicle body structure with a glass diaphragm according to any one of claims 1 to 6, wherein: The resin layer is composed of at least one resin selected from the group consisting of polyurethane-based, phenol-based, butyl-based, synthetic rubber-based, acrylic-based, epoxy-based, silicone-based, epoxy-silicone-based, and polyvinyl chloride-based resins.

8. The vehicle body structure with a glass diaphragm according to any one of claims 1 to 7, wherein: The vibrator is mounted on a peripheral portion of the window glass.

9. The vehicle body structure with a glass diaphragm according to claim 8, wherein: The window glass has a shielding layer for shielding visible light in at least a portion of the peripheral portion. The vibrator is mounted at a position overlapping with the shielding layer when viewed in the thickness direction of the window glass.

10. The vehicle body structure with a glass diaphragm according to any one of claims 1 to 9, wherein: The window glass is at least one of a windshield glass, a rear window glass, a rear quarter window glass, a front quarter window glass, and a sunroof glass.

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