Glass membrane and glass membrane with attached pathogen

Abstract

The present invention relates to a glass vibration plate comprising a glass plate assembly, a mounting element fixed to the glass plate assembly and to which an exciter for vibrating the glass plate assembly is attached, and an adhesive layer that joins the glass plate assembly and the mounting element together. The adhesive layer comprises a first adhesive layer and a second adhesive layer made of different materials. The first adhesive layer has a shear energy modulus of less than or equal to 1.0 × 10⁻⁶. 7 [Pa] at -40 [°C]. The second adhesive layer has a shear peel strength of more than or equal to 0.2 [MPa] at 80 [°C].

Description

Technical area

[0001] The present invention relates to a glass membrane and a glass membrane with an attached exciter. State of the art

[0002] In recent years, a technique has been studied in which various plate-shaped elements, such as an electronic device element, a vehicle window element, and an interior element of a transportation machine such as a vehicle, are vibrated to act as a loudspeaker. For example, Patent Literatures 1 to 5 disclose various structures that transmit vibration from an electrically vibrating exciter (shaker) to a membrane such as a glass plate.

[0003] Patent Literature 1 discloses a structure in which a sole, a base, and a cap are laminated sequentially on a main surface of a glass plate, the sole and the base are fixed with a plastic portion covering a portion of the glass plate, and an exciter is connected to the cap on the fixed base. Citation listPatent literature Patent literature 1: WO 2021 / 229179 Patent literature 2: WO 2021 / 229180 Patent literature 3: WO 2019 / 172076 Patent Literature 4: JP 2010-263512 A Patent Literature 5: JP 2009-100223 A Brief description of the inventionTechnical problem

[0004] However, with such an attachment structure for attaching the exciter to the glass plate, continuous use of the vibrating exciter may cause a mounting position to shift, resulting in a reduction in sound reproduction quality, or cause the exciter to fall off. In addition, in a structure in which the sole and the base are fixed to the glass plate by the plastic portion, such as the attachment structure described in Patent Literature 1, there are problems such as complicated design or difficulty in stably covering the plastic portion with the sole and the base. Furthermore, there is a risk that a fixing strength between the sole and the base by the plastic portion decreases due to temperature changes.

[0005] Therefore, an object of the present invention is to provide a glass diaphragm and an exciter-attached glass diaphragm in which an exciter can be stably attached to a glass plate structure, a reduction in a quality of a sound emitted from the glass diaphragm and a fall-off of the exciter due to a displacement of the exciter can be prevented, and a reduction in a fixing strength due to a temperature change can be prevented. Solution to the problem

[0006] The present invention has the following configurations. (1) A glass membrane comprising: a glass plate structure; a mounting element fixed to the glass plate structure and to which an exciter for vibrating the glass plate structure is to be attached; and an adhesive layer in contact with the glass plate structure and the mounting element, in which the adhesive layer comprises a first adhesive layer and a second adhesive layer made of different materials, a material of the first adhesive layer differs from a material of the second adhesive layer, the first adhesive layer has a shear storage modulus of 1.0 × 10 -7 [Pa] or less at -40 [°C], and the second adhesive layer has a shear peel strength of 0.2 [MPa] or more at 80 [°C]. (2) A glass membrane with an exciter attached, comprising: the glass membrane according to the above (1); and the exciter. Advantageous effects of the invention

[0007] According to the present invention, the exciter can be stably attached to the glass plate structure, a reduction in a quality of a sound emitted from the glass diaphragm and a falling off of the exciter due to a displacement of the exciter can be prevented, and a reduction in a fixing strength due to a temperature change can be prevented. Short description of drawings [ Fig. 1] Fig. Figure 1 is a schematic plan view of a glass membrane. [ Fig. 2] Fig. Figure 2 is a schematic cross-sectional view of the glass membrane along a line II-II in Fig. 1. [ Fig. 3] Fig. 3 is a perspective view of a mounting element and an exciter fixed to a glass plate structure. [ Fig. 4] Fig. 4 is a schematic cross-sectional view taken along a line IV-IV in Fig. 2. [ Fig.5] Fig. 5 is a schematic cross-sectional view of a glass membrane according to a first modification. [ Fig. 6] Fig. 6 is a schematic cross-sectional view of a glass membrane according to a second modification. [ Fig. 7] Fig. 7 is a schematic cross-sectional view of a glass membrane according to a third modification. [ Fig. 8A] Fig. 8A is a schematic cross-sectional view taken along a surface direction of an adhesive layer, showing arrangement patterns of a first adhesive layer and a second adhesive layer. [ Fig. 8B] Fig. 8B is a schematic cross-sectional view taken along the surface direction of the adhesive layer, showing an arrangement pattern of the first adhesive layer and the second adhesive layer. [ Fig. 8C] Fig.8C is a schematic cross-sectional view taken along the surface direction of the adhesive layer, showing an arrangement pattern of the first adhesive layer and the second adhesive layer. [ Fig. 9] Fig. 9 is a perspective view of a test piece illustrating a method for evaluating a shear stress. [ Fig. 10] Fig. 10 is a schematic diagram of an adhesive layer showing an adhesive layer in which two kinds of adhesives are combined. [ Fig. 11] Fig. 11 is a schematic design diagram of a test apparatus illustrating a method for evaluating vibration transmissibility. [ Fig. 12A] Fig. 12A is a schematic cross-sectional view of an adhesive layer showing another example of an arrangement pattern of the first adhesive layer and the second adhesive layer. [ Fig. 12B] Fig.12B is a schematic plan view of the adhesive layer shown in Fig. 12A is shown. Description of embodiments

[0008] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. An exciter-mounted glass membrane according to the present embodiment includes a glass membrane and an exciter configured to vibrate the glass membrane, and can be applied to, for example, an application for vibrating a vehicle glass panel. In the following description, an example will be described in which the exciter-mounted glass membrane is applied to a window portion such as a side window of a vehicle, but the application is not limited thereto. <Gesamtgestaltung der Glasmembran>

[0009] Fig. 1 is a schematic plan view of a glass membrane 11. Fig.2 is a schematic cross-sectional view of the glass membrane 11 along a line II-II in Fig. 1. Fig. 3 is a perspective view of a mounting member 17 and an exciter 13 fixed to a glass plate structure 15.

[0010] As in Fig. 1 to Fig. As shown in Figure 3, the exciter 13 for generating vibration is mountable on a main surface of the glass plate structure 15 in the glass membrane 11. Specifically, the glass membrane 11 comprises the glass plate structure 15, the mounting element 17, and a connecting element 19. <Gestaltung der Glasmembran mit angebrachten Erreger>

[0011] A glass membrane with an exciter attached 100 has a configuration in which the exciter 13 is mounted on the glass membrane 11. The exciter 13 is connected and fixed to the connecting member 19, and the connecting member 19 is fixed to the mounting member 17. The exciter 13 is connected to the connecting member 19 by at least one of a mechanical fastening method such as a screw, a bolt and a nut, a rivet, a key and a pin, and an adhesive. Note that the exciter 13 and the connecting member 19 may be configured to be firmly fixed to each other using different members, or may be configured to be integrated into one body using the same member. The connecting member 19 is mechanically fixed to the mounting member 17.The mounting member 17 is fixed to a first main surface 15a, which is one of the main surfaces of the glass plate structure 15. Accordingly, the exciter 13 is mounted to the first main surface 15a of the glass plate structure 15 by means of the connecting member 19 and the mounting member 17.

[0012] For example, when the glass membrane 11 is used as a side window of a vehicle, the exciter 13 is arranged in the area below a belt line BL, that is, in an area on the side of a frame 16 of a lift mechanism (not shown). Accordingly, sound generated by the glass panel structure 15 can be supplied to the interior of the vehicle. Note that the belt line BL corresponds to a lower side of an opening when the side window is fully closed once the side window is attached to the vehicle (the vehicle door).

[0013] The exciter 13 is a vibration device that uses an object with which it comes into contact as a diaphragm and generates a sound from the diaphragm. The glass diaphragm with the exciter 100 mounted thereon generates a desired sound by vibrating the glass diaphragm 11 when the exciter 13 is driven. The exciter 13 used here may be an exciter (not shown) that includes a coil portion electrically connected to an external device, a magnetic circuit portion, and a vibration portion. With this exciter, when an electrical sound signal is input from the external device to the coil portion, the coil portion or the magnetic circuit portion vibrates due to an interaction between the coil portion and the magnetic circuit portion.The vibration of the coil portion or the magnetic circuit portion is transmitted to the vibrating portion, and the vibrating portion generates vibration. Note that the exciter 13 is provided with a conductor wire (not shown) for driving the exciter 13. <glasplattenstruktur>

[0014] The glass plate structure 15 constituting the glass membrane 11 includes the first main surface 15a and a second main surface 15b. Here, the glass plate structure 15 is exemplified by a single glass plate (single-plate glass), but it may have another form, such as laminated glass in which an interlayer such as a resin interlayer or a liquid is sandwiched between a pair of glass plates. A thickness of the glass plate structure 15 is preferably 1 [mm] or more, more preferably 2 [mm] or more, and even more preferably 3 [mm] or more. Accordingly, the strength of the glass plate structure 15 can be made sufficient as needed. <montierelement>

[0015] The mounting member 17 may be formed of a metal material such as aluminum or an aluminum alloy, a titanium alloy, a magnesium alloy, or stainless steel, or a material such as a ceramic, a glass, a resin material, a carbon fiber, or a composite material made of these. Examples of the resin material include acrylic resins such as polymethyl methacrylate resin (PMMA), a polycarbonate (PC), polyvinyl chloride (PVC), urethane, a polypropylene (PP), an ABS resin, polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), a polystyrene (PS), and nylon 66, which have excellent formability. Further, the above material is more preferably a fiber-reinforced plastic containing a glass fiber or a carbon fiber. By using the above materials, sufficient bonding strength can be obtained without causing cracks or the like in the mounting member 17.The mounting member 17 may be made of a single material, but may also be made of a composite material such as an aluminum alloy and stainless steel or a resin material and stainless steel.

[0016] The mounting member 17 is formed in a circular shape in a plan view of the glass plate structure 15. An adhesive layer 20 in contact with the glass plate structure 15 and the mounting member 17 is provided between the glass plate structure 15 and the mounting member 17. The mounting member 17 is adhesively fixed to the first main surface 15a of the glass plate structure 15 by the adhesive layer 20. Note that an outer edge shape of the mounting member 17 in the plan view of the glass plate structure 15 is not limited to a circular shape and may be any shape, such as a polygon.

[0017] The mounting element 17 includes a screw hole 25 on a side opposite to a side fixed to the glass plate structure 15. The connecting element 19 provided on the exciter 13 includes a screw shaft 27, and the connecting element 19 is fixed to the mounting element 17 by screwing this screw shaft 27 into the screw hole 25 of the mounting element 17, which is adhesively fixed to the glass plate structure 15 (see Fig. 2 and Fig. 3).

[0018] In this way, the connecting member 19 fixed to the exciter 13 is mechanically fixed to the mounting member 17 adhesively fixed to the glass plate structure 15, and the exciter 13 is stably attached to the glass plate structure 15. In addition, when the connecting member 19 screwed into the mounting member 17 is loosened, the exciter 13 (in this case, a member to which the exciter 13 and the connecting member 19 are fixed) can be removed from the glass plate structure 15, so that the exciter 13 can be easily replaced.It should be noted that the screw structure between the connecting member 19 and the mounting member 17 is not limited to a combination of the connecting member 19 having a convex screw portion and the mounting member 17 having a concave screw portion screwed thereto, but may also be a combination of the connecting member 19 having a concave screw portion and the mounting member 17 having a convex screw portion screwed thereto. Furthermore, the fixing structure between the mounting member 17 and the connecting member 19 is not limited to the screw structure, but may be, for example, a mechanical fastening method such as a rivet, a key, or a pin. <haftmittellage>

[0019] Fig. 4 is a schematic cross-sectional view taken along a line IV-IV in Fig. 2.

[0020] As in Fig. 4, the adhesive layer 20 between the glass plate structure 15 and the mounting member 17 includes a first adhesive layer 21 and a second adhesive layer 23. The adhesive layers 20 are made of different materials. The first adhesive layer 21 is arranged in a ring shape along an outer edge of the mounting member 17, and the second adhesive layer 23 is arranged in a central portion of the mounting member 17. The first adhesive layer 21 and the second adhesive layer 23 are in contact with both the glass plate structure 15 and the mounting member 17. The mounting member 17 is adhesively fixed to the first main surface 15a of the glass plate structure 15 by the first adhesive layer 21 and the second adhesive layer 23. Accordingly, the mounting member 17 to which the exciter 13 or a member in which the connecting member 19 and the exciter 13 are integrated is fixed can be easily fixed to the glass plate structure 15 with a simple structure.

[0021] As the adhesive layer 20 for adhesively fixing the mounting member 17 to the glass plate structure 15, it is preferable to use an adhesive capable of firmly fixing the mounting member 17 to the glass plate structure 15. However, when a liquid or gel adhesive providing high adhesive strength is used, the adhesive layer 20 becomes thick, and the vibration applied by the exciter 13 is absorbed by the adhesive layer 20, which can reduce the acoustic effect. Therefore, it is preferable to use a pressure-sensitive adhesive tape as the adhesive layer 20, which can adhere at a smaller thickness than a liquid or gel adhesive and has good handleability. Examples of the pressure-sensitive adhesive tape include acrylic, silicone, urethane, and epoxy silicone pressure-sensitive adhesive tapes.

[0022] Since the glass membrane 11, especially when used as an automobile glass window, is expected to be used in extremely hot or cold areas, the glass plate structure 15 and the mounting member 17 are required to be able to maintain a firmly fixed state without being affected by temperature changes, even in, for example, an assumed temperature range for use from a low-temperature range (-40°C) to a high-temperature range (80°C). Specifically, the exciter 13 and the mounting member 17 may be subjected to sudden and instantaneous shear stress, and thus are required to be able to withstand at least a stress of 0.2 MPa or more per unit area in the assumed temperature stress for use.

[0023] Here, examples of the adhesive include a pressure-sensitive adhesive tape that provides a good acoustic effect due to a small thickness, a low-temperature resistant type that has excellent vibration resistance in a low-temperature range, and a high-temperature resistant type that has excellent shear peel strength in a high-temperature range.

[0024] However, the low-temperature-resistant type adhesive softens in the high-temperature range, and peeling may occur due to a reduction in shear peel strength. In addition, the high-temperature-resistant type adhesive is brittle in the low-temperature range, vibration resistance may decrease, and cracks may be generated. Note that even though there is an intermediate-temperature-resistant type adhesive, sufficient bonding strength may not be obtained in the high-temperature range and the low-temperature range within the assumed temperature range for use (-40°C to 80°C) of the glass membrane 11.

[0025] Therefore, when the glass plate structure 15 is adhered to the mounting member 17 using any of the low-temperature resistant type adhesive, the high-temperature resistant type adhesive, and the intermediate-temperature resistant type adhesive, it is difficult to maintain a firmly fixed state due to a temperature change in the assumed temperature range for use (-40[°C] to 80[°C]).

[0026] Therefore, the inventors of the present invention have found that when the adhesive layer 20 for adhesively fixing the glass plate structure 15 and the mounting member 17 comprises a combination of the first adhesive layer 21 made of a low-temperature resistant type adhesive and the second adhesive layer 23 made of a high-temperature resistant type adhesive, a reduction in fixing strength due to a temperature change in the assumed temperature range for use (-40°C to 80°C) is prevented while maintaining a good acoustic effect.

[0027] In this configuration example, the adhesive layer 20 is configured to include the first adhesive layer 21 and the second adhesive layer 23 made of different materials, and for example, the first adhesive layer 21 is made of a low-temperature-resistant type adhesive and the second adhesive layer 23 is made of a high-temperature-resistant type adhesive.

[0028] Specifically, the adhesive layer 20 for adhesively fixing the glass plate structure 15 and the mounting element 17 is formed by combining the first adhesive layer 21 having a shear storage modulus of 1.0 × 10 -7 [Pa] or less at -40 [°C], and the second adhesive layer 23, which has a shear peel strength of 0.2 [MPa] or more at 80 [°C]. Accordingly, regardless of temperature changes, the glass plate structure 15 and the mounting member 17 can be maintained in a firmly fixed state, and the attachment state of the exciter 13 or the member in which the connecting member 19 and the exciter 13 are integrated to the glass plate structure 15 can be stably maintained even in extremely hot or cold areas. In addition, the shear storage modulus of the first adhesive layer 21 at -40 [°C] is preferably 1.0 × 10 7 [Pa] or less, preferably 7.0 × 10 6 [Pa] or less and more preferably 5.0 × 10 6 [Pa] or less. Further, the shear peel strength of the second adhesive layer 23 at 80 [°C] is preferably 0.2 [MPa] or more, more preferably 0.4 [MPa] or more, and even more preferably 0.5 [MPa] or more.

[0029] In particular, the adhesive layer 20 comprising the first adhesive layer 21 and the second adhesive layer 23 preferably has an average shear peel strength of 0.2 MPa or more in the range of -40°C to 80°C. Accordingly, the fixing structure of the mounting member 17 to the glass plate structure 15 can be made more resistant to temperature changes. In addition, the average shear peel strength of the adhesive layer 20 in the range of -40°C to 80°C is more preferably 0.4 MPa or more, and even more preferably 0.6 MPa or more.

[0030] Furthermore, in this design example, the first adhesive layer 21 and the second adhesive layer 23, which form the adhesive layer 20, have a thickness of 1 [µm] to 1.0 [mm].

[0031] Here, for example, the adhesive layer 20 made of a pressure-sensitive adhesive tape or the like tends to be subjected to greater physical forces as the thickness of the layer increases, resulting in a decrease in strength. Therefore, to increase the strength of the adhesive layer 20, it is desirable to make the adhesive layer 20 thinner. However, the adhesive has a thickness range within which it is most extensible or most likely to exhibit strength, depending on a relationship between a polymer composition or cross-link density and physical entanglement within a link. Furthermore, the adhesive layer 20 is required to be able to efficiently transmit the vibration of the exciter 13 to the glass plate structure 15 via the mounting member 17.

[0032] As in this configuration example, when the first adhesive layer 21 and the second adhesive layer 23 constituting the adhesive layer 20 have a thickness of 1 [μm] to 1.0 [mm], the vibration of the exciter 13 can be efficiently transmitted to the glass plate structure 15 via the mounting member 17, while sufficiently ensuring the adhesion strength of the mounting member 17 to the glass plate structure 15, and an excellent acoustic effect can be obtained. Note that the thickness of the adhesive layer 20 is preferably equal to or greater than a surface roughness of the glass, more preferably 5 [μm] or more, and more preferably 10 [μm] or more. In addition, the thickness of the adhesive layer 20 is more preferably 0.5 [mm] or less, and even more preferably 0.2 [mm] or less.

[0033] Note that in the glass membrane 11 according to this configuration example, the first adhesive layer 21 and / or the second adhesive layer 23 preferably have a loss coefficient tan δ of 0.01 or more at -40 [°C]. The loss coefficient tan δ is a ratio of the shear storage modulus to a shear loss modulus, and the larger the loss coefficient tan δ, the more shock can be absorbed. Therefore, when at least one of the first adhesive layer 21 and the second adhesive layer 23 has a loss coefficient tan δ of 0.01 or more at -40 [°C], particularly, shock resistance in cold regions is improved, and the firmly fixed state of the mounting member 17 to the glass plate structure 15 can be maintained more satisfactorily. In addition, the loss coefficient tan δ at -40 [°C] of at least one of the first adhesive layer 21 and the second adhesive layer 23 is more preferably 0.5 or more, and even more preferably 0.1 or more.Further, the loss coefficient tan δ at -40° [°C] of each of the first adhesive layer 21 and the second adhesive layer 23 is preferably 0.01 or more, more preferably 0.02 or more, and still more preferably 0.05 or more.

[0034] In this configuration example, the thickness of the first adhesive layer 21 is approximately the same as that of the second adhesive layer 23. Accordingly, the mounting member 17 can be adhered to the glass plate structure 15 by the first adhesive layer 21 and the second adhesive layer 23 in a well-balanced manner.

[0035] It should be noted that when an area of ​​the first adhesive layer 21 in contact with the glass plate structure 15 is S1 and an area of ​​the second adhesive layer 23 in contact with the glass plate structure 15 is S2, a ratio S1:S2 preferably satisfies a range of 1:0.01 to 1:100. Accordingly, the area of ​​the first adhesive layer 21 and the second adhesive layer 23 in contact with the glass plate structure 15 can be adjusted to have an appropriate ratio, and the mounting member 17 can satisfactorily adhere to the glass plate structure 15 through the first adhesive layer 21 and the second adhesive layer 23. It should be noted that since it is intended for use in a wide range of temperature environments, it is more preferable for S1:S2 that S1 and S2 have a similar area ratio.For the above reasons, a ratio satisfying a range of 1:0.1 to 1:10 is more preferable, a ratio satisfying a range of 1:0.2 to 1:5 is even more preferable, and a ratio satisfying a range of 1:0.5 to 1:2 is particularly preferable.

[0036] In addition, a total area of ​​the surface area S1 of the first adhesive layer 21 in contact with the glass plate structure 15 and the surface area S2 of the second adhesive layer 23 in contact with the glass plate structure 15 is preferably 100 [mm 2 ] or more. Accordingly, the surface areas of the first adhesive layer 21 and the second adhesive layer 23 in contact with the glass plate structure 15 can be sufficiently secured, and the mounting member 17 can be satisfactorily adhered to the glass plate structure 15 by the first adhesive layer 21 and the second adhesive layer 23. It should be noted that the total area of ​​the surface area S1 of the first adhesive layer 21 and the surface area S2 of the second adhesive layer 23 in contact with the glass plate structure 15 is preferably 200 [mm 2 ] or more and more preferably 400 [mm 2 ] or more. On the other hand, the total area of ​​the surface area S1 of the first adhesive layer 21 and the surface area S2 of the second adhesive layer 23 in contact with the glass plate structure 15 is preferably 10,000 [mm 2 ] or less, preferably 5000 [mm 2 ] or less and more preferably 2000 [mm 2 ] or less, in view of the fact that the area occupied by the mounting member 17 is too large and the weight of the mounting member 17 increases.

[0037] In addition, in the plan view of the glass plate structure 15, the first adhesive layer 21 is arranged in a ring shape along the outer edge of the mounting member 17, and the second adhesive layer 23 is arranged in the central portion of the mounting member 17. Accordingly, in the plan view of the glass plate structure 15, a center of gravity G of the mounting member 17 overlaps the second adhesive layer 23 (see Fig. 4). In addition, the second adhesive layer 23, which overlaps the center of gravity G of the mounting member 17, is arranged in a circular shape centered on the center of gravity G of the mounting member 17 in the plan view of the glass plate structure 15. Therefore, the second adhesive layer 23 is arranged in a region (first region) that is point-symmetrical with respect to the center of gravity G of the mounting member 17. Further, in the plan view of the glass plate structure 15, the first adhesive layer 21 is arranged in a ring shape along the outer edge of the mounting member 17 so as to surround a periphery of the second adhesive layer 23. In this case, the first adhesive layer 21 may also be arranged in a region (second region) that is point-symmetrical with respect to the center of gravity G of the mounting member 17, and is arranged in a point-symmetrical region in the present embodiment.Here, both the first region and the second region are point-symmetric with respect to the center of gravity G of the mounting member 17. However, it is sufficient that at least one of the regions is point-symmetric with respect to the center of gravity G, and it is preferable that both regions are point-symmetric with respect to the center of gravity G.

[0038] In this way, when the first adhesive layer 21 and the second adhesive layer 23 are arranged, the adhesive forces of the first adhesive layer 21 and the second adhesive layer 23 are applied between the glass plate structure 15 and the mounting member 17 in a well-balanced manner. Accordingly, the mounting member 17 can be adhesively fixed to the glass plate structure 15 in a more balanced manner. Note that, as described above, the state in which each region in the first adhesive layer 21 and the second adhesive layer 23 is formed to be point-symmetrical with respect to the center of gravity G of the mounting member 17 is not limited to perfect point symmetry, and as long as the shape can be visually recognized as point-symmetrical, some deviation is allowable.

[0039] Note that in the above configuration example, a case where the mounting member 17 having a circular shape in a plan view is used is illustrated, but the mounting member 17 may have a polygonal shape in a plan view, such as a triangle or a rectangle, or may have any shape including a curved line in addition to the polygonal shape. Thus, when the mounting member 17 has any shape in the plan view of the glass panel structure 15, the adhesive layer 20 may have an outer edge having a shape the same as the outer edge of the mounting member 17, or may have a portion where the outer edge is positioned further inward than the outer edge of the mounting member 17.In this case, it is also preferable that each region in the first adhesive layer 21 and the second adhesive layer 23 included in the adhesive layer 20 is formed to be point-symmetric with respect to the center of gravity G of the mounting member 17.

[0040] Additionally, the positions of the first adhesive layer 21 and the second adhesive layer 23 disposed between the glass plate structure 15 and the mounting element 17 may be reversed. In this case, the adhesive forces of the first adhesive layer 21 and the second adhesive layer 23 can also be applied in a well-balanced manner between the glass plate structure 15 and the mounting element 17.

[0041] Furthermore, the adhesive layer 20 may include not only the first adhesive layer 21 and the second adhesive layer 23, but also a third adhesive layer (not shown). In this case, the third adhesive layer may be an adhesive layer having physical properties different from those of the first adhesive layer 21 and the second adhesive layer 23, or may be an adhesive layer that is the same as the first adhesive layer 21 or the second adhesive layer 23. When the third adhesive layer is different from the first adhesive layer 21 and the second adhesive layer 23, the fixing strength can be easily adjusted according to temperature changes in the range of -40 [°C] to 80 [°C].When the third adhesive layer is an adhesive layer made of a material the same as that of the first adhesive layer 21 or the second adhesive layer 23, the third adhesive layer is arranged at a distance from the adhesive layer made of the same material. Furthermore, even if the adhesive layer 20 includes the third adhesive layer (not shown), it is preferable that each region in the first adhesive layer 21, the second adhesive layer 23, and the third adhesive layer be formed to be point-symmetrical with respect to the center of gravity G of the mounting member 17.

[0042] The fixing structure between the glass plate structure 15 and the mounting member 17 in the glass membrane 11 according to this configuration example described above is only an example and can be modified into various configurations.

[0043] Modifications of the fixing structure between the glass plate structure 15 and the mounting member 17 will be described below. Note that in the following description, the same or corresponding reference numerals are assigned to the same or corresponding portions or elements, and duplicate descriptions are omitted. (First variation)

[0044] Fig. 5 is a schematic cross-sectional view of the glass membrane 11 according to a first modification.

[0045] As in Fig. As shown in FIG. 5, in the glass membrane 11 according to the first modification, a gap is provided along a circumferential direction between the second adhesive layer 23 disposed in the central portion of the mounting member 17 and the first adhesive layer 21 disposed in a ring shape along the outer edge of the mounting member 17. Accordingly, the first adhesive layer 21 and the second adhesive layer 23 have portions spaced apart from each other.In the glass membrane 11 according to the first modification, since the first adhesive layer 21 and the second adhesive layer 23 have portions spaced from each other, even if the volume of the first adhesive layer 21 and / or the second adhesive layer 23 increases due to thermal expansion caused by a temperature change, it is easier to prevent generation of the stress caused by the first adhesive layer 21 and the second adhesive layer 23 coming into contact with and interfering with each other. (Second variation)

[0046] Fig. 6 is a schematic cross-sectional view of the glass membrane 11 according to a second modification.

[0047] As in Fig. As shown in FIG. 6, in the glass membrane 11 according to the second modification, the mounting member 17 includes an enlarged diameter portion 31 on the side fixed to the glass plate structure 15. Accordingly, the mounting member 17 includes a step 31a toward the glass plate structure 15. With the mounting member 17 having such a shape, an area on the side of the glass plate structure 15 can be made larger than an area on a side remote from the glass plate structure 15 in the plan view of the glass plate structure 15.

[0048] In the glass membrane 11 according to the second modification, an area of ​​the mounting member 17 on the side fixed to the glass plate structure 15 can be increased, and the adhesive strength of the mounting member 17 to the glass plate structure 15 by the first adhesive layer 21 and the second adhesive layer 23 can be increased.

[0049] Note that in the glass membrane 11 according to the second modification, there is the step 31a formed by increasing the diameter of the mounting member 17 on the side fixed to the glass plate structure 15. However, the mounting member 17 may have a truncated cone shape whose diameter gradually increases toward the glass plate structure 15, and in this case, the area of ​​the mounting member 17 on the side fixed to the glass plate structure 15 may also be increased. (Third variation)

[0050] Fig. 7 is a schematic cross-sectional view of the glass membrane 11 according to a third modification.

[0051] As in Fig. 7, in the glass membrane 11 according to a third modification, the mounting member 17 includes a depressed portion 33 in the central portion. The first adhesive layer 21 is arranged in a ring shape along the outer edge of the mounting member 17 and is further arranged on an inner peripheral surface and a bottom surface of the depressed portion 33 of the mounting member 17. In addition, the second adhesive layer 23 is arranged in the depressed portion 33 of the mounting member 17, the inner peripheral surface and bottom surface of which are provided with the first adhesive layer 21. Accordingly, in the depressed portion 33 of the mounting member 17, the first adhesive layer 21 and the second adhesive layer 23 overlap each other in a thickness direction.In the third modification, an outer edge portion of the mounting member 17 may be adhered to the glass plate structure 15 through the first adhesive layer 21, and further, the central portion of the mounting member 17 may be adhered to the glass plate structure 15 through the first adhesive layer 21 and the second adhesive layer 23 overlapping each other.

[0052] Next, various arrangement patterns of the first adhesive layer 21 and the second adhesive layer 23 arranged between the glass plate structure 15 and the mounting member 17 will be described.

[0053] Fig. 8A to Fig. 8C are schematic cross-sectional views along a surface direction of the adhesive layer, each showing an arrangement pattern of the first adhesive layer and the second adhesive layer.

[0054] The arrangement pattern shown in Fig. 8A, with respect to the mounting member 17, the second adhesive layer 23 is arranged in a straight line along a radial direction passing through the center of gravity G of the mounting member 17 in a plan view, and the first adhesive layer 21 is arranged in a portion other than that at which the second adhesive layer 23 is arranged.

[0055] The arrangement pattern shown in Fig. 8B, with respect to the mounting member 17, the second adhesive layer 23 is arranged in a cross shape centered on the center of gravity G of the mounting member 17 in a plan view, and the first adhesive layer 21 is arranged in a portion other than that at which the second adhesive layer 23 is arranged.

[0056] The arrangement pattern shown in Fig. 8C, with respect to the mounting member 17, a plurality (four in this example) of first adhesive layers 21 each having a circular shape are arranged at equal intervals around the center of gravity G of the mounting member 17, and the second adhesive layer 23 is arranged in a portion different from that at which the first adhesive layers 21 are arranged.

[0057] In all cases of the arrangement patterns used in Fig. 8A to Fig. 8C, the center of gravity G of the mounting member 17 is arranged at a position overlapping the second adhesive layer 23 in the plan view of the glass plate structure 15. In addition, the second adhesive layer 23 is arranged in a region (first region) that is point-symmetrical with respect to the center of gravity G of the mounting member 17. Further, the first adhesive layer 21 is arranged in a region (second region) that is point-symmetrical with respect to the center of gravity G of the mounting member 17 in the plan view of the glass plate structure 15.

[0058] The arrangement patterns used in Fig. 8A to Fig. 8C, when the first adhesive layer 21 and the second adhesive layer 23 are arranged, the adhesive forces of the first adhesive layer 21 and the second adhesive layer 23 are introduced in a well-balanced manner between the glass plate structure 15 and the mounting member 17. Accordingly, the mounting member 17 can be adhesively fixed to the glass plate structure 15 in a more balanced manner.

[0059] It should be noted that the arrangement patterns shown in Fig. 8A to Fig. 8C, the positions of the first adhesive layer 21 and the second adhesive layer 23 arranged may also be reversed. In this case, the adhesive forces of the first adhesive layer 21 and the second adhesive layer 23 can also be applied in a well-balanced manner between the glass plate structure 15 and the mounting member 17. Examples<Bewertung der Haftmittellage>

[0060] The shear storage modulus and loss coefficient were measured for various adhesive layers made of pressure-sensitive adhesive tapes, and the shear stress and vibration transmission capacity were evaluated. Note that in the following evaluation, Test Examples 1 to 6, 8, and 9 are comparative examples, and Test Examples 7 and 10 are inventive examples. (Shear storage modulus and loss coefficient)

[0061] The shear storage modulus was measured for adhesive A made of a high-temperature-resistant pressure-sensitive adhesive tape, adhesive B made of an intermediate-temperature-resistant pressure-sensitive adhesive tape, and adhesive C made of a low-temperature-resistant pressure-sensitive adhesive tape. Note that the shear storage modulus and loss coefficient were measured using a dynamic viscoelasticity measuring device (DVA-225, manufactured by IT Measurement & Control Co., Ltd.) at -40 [°C], 25 [°C], and 80 [°C] in a shear mode at 1 Hz. The loss coefficient of each adhesive type A to C was measured at -40 [°C]. The results of measuring the shear storage modulus of each adhesive type A to C are shown in Table 1. Table 1 temperature Adhesive A Adhesive B Adhesive C 80 °C 3.0 × 10 4 Well 1.0 × 10 4 Well 7.7 × 10 3 Well 25 °C 5.5 × 10 4 Well 1.2 × 10 4 Well 3.2 × 10 4 Well -40 °C 1.3 × 10 7 Well 1.1 × 10 7 Well 5.0 × 10 6 Well

[0062] As shown in Table 1, the shear storage modulus at -40 [°C] is 1.3 × 10 7 [Pa] for adhesive A and 1.1 × 10 7 [Pa] for adhesive B. That is, it was assumed that both adhesive A and adhesive B had a shear storage modulus greater than 1.0 × 10 7 [Pa], in the low-temperature range (-40 [°C]), and were brittle. In contrast, it was observed that adhesive C had a shear storage modulus of 5.0 × 10 6 [Pa] at -40 [°C], which is 1.0 × 10 7 [Pa] or less, and had sufficient flexibility even in the low temperature range (-40 [°C]).

[0063] In addition, the loss coefficient tan δ measured at -40 [°C] was 0.06 for adhesive A, 0.17 for adhesive B, and 0.26 for adhesive C. That is, all of the adhesives A to C had a loss coefficient tan δ of 0.01 or more at -40 [°C], indicating that sufficient impact resistance was obtained even in cold areas. (Assessment of shear stress)(1) Assessment method

[0064] Fig. 9 is a perspective view of a test piece illustrating a method for evaluating a shear stress.

[0065] As in Fig. 9, in Test Examples 1 to 7 to be evaluated, an adhesive layer 105 was sandwiched between a glass plate 101 having a width of 20 [mm], a length of 30 [mm], and a thickness of 3 [mm] and an aluminum plate (A6061) 103, and a load of 2 kg was applied in a thickness direction, followed by standing still for 24 hours to adhere the glass plate 101 to the aluminum plate 103.

[0066] To simulate the instantaneous stress between the glass plate 101 and the aluminum plate 103 due to the adhesion of the adhesive layer 105, a shear force was applied at a speed of 300 mm / min, and a stress at which the adhesive layer 105 experienced cohesive failure and the glass plate 101 and the aluminum plate 103 peeled off was measured as the shear stress. This shear stress measurement was performed ten times each at -40°C, 25°C, and 80°C, and the average value was taken as the shear peel strength for each of Test Examples 1 to 7. Note that a case where the adhesive layer 105 peeled off at an interface and the glass plate 101 and the aluminum plate 103 peeled off due to the application of the shear force was judged unacceptable. The shear stress was measured using an autograph (AGX-V, manufactured by Shimadzu Corporation).

[0067] (2) Test examples 1 to 7 used as adhesive layer 105 Test example 1: an adhesive A having a thickness of 0.05 [mm] Test example 2: an adhesive A having a thickness of 0.25 [mm] Test example 3: an adhesive B having a thickness of 0.05 [mm] Test example 4: an adhesive B having a thickness of 0.30 [mm] Test example 5: an adhesive C having a thickness of 0.05 [mm] Test example 6: an adhesive C having a thickness of 0.40 [mm] Test Example 7: a combination of an adhesive A having a thickness of 0.05 [mm] and an adhesive C having a thickness of 0.05 [mm]

[0068] Fig. 10 is a schematic diagram of the adhesive layer 105, showing an adhesive layer 105 in which two kinds of adhesives A and B are combined.

[0069] As in Fig. 10, in Test Example 7 in which the adhesive A and the adhesive C were combined, the adhesive layer 105 was formed by alternatively arranging strips of the adhesive A and the adhesive C. Note that the area ratio (S1:S2) of the adhesive A to the adhesive C was set to 1:1. (3) Evaluation results

[0070] The evaluation results are shown in Table 2. Table 2 Test example 1 Test example 2 Test example 3 Test example 4 Test example 5 Test example 6 Test example 7 thickness 0.05 mm 0.25 mm 0.05 mm 0.30 mm 0.05 mm 0.40 mm 0.05 mm 80 °C 0.70 MPa 0.46 MPa 0.16 MPa 0.10 MPa 0.12 MPa 0.06 MPa 0.73 MPa 25 °C 0.95 MPa 0.88 MPa 0.90 MPa 0.76 MPa 0.40 MPa 0.25 MPa 0.99 MPa -40 °C Interfacial peeling Interfacial peeling Interfacial peeling Interfacial peeling 1.20 MPa 0.45 MPa 1.21 MPa Average value - - - - 0.57 MPa 0.25 MPa 0.98 MPa

[0071] As shown in Table 2, for Test Examples 1 and 2 using adhesive A made of a high-temperature-resistant pressure-sensitive adhesive tape, the shear peel strength at 80 °C was 0.70 MPa and 0.46 MPa, respectively, and sufficient durability was obtained. However, in both Test Examples 1 and 2, interfacial peeling occurred at -40 °C, which was unacceptable.

[0072] For Test Examples 3 and 4, which used Adhesive B, made of a pressure-sensitive adhesive tape with intermediate temperature resistance, the shear peel strength at 80 °C was 0.16 MPa and 0.10 MPa, respectively, and sufficient durability was not obtained. Additionally, both Test Examples 3 and 4 exhibited interfacial peeling at -40 °C, which was unacceptable.

[0073] For Test Examples 5 and 6, which used adhesive C made of a low-temperature-resistant pressure-sensitive adhesive tape, the shear peel strength at 80 °C was 0.12 MPa and 0.06 MPa, respectively, and the durability was insufficient. However, for Test Examples 5 and 6, the shear peel strength at -40 °C was 1.2 MPa and 0.45 MPa, respectively, and sufficient durability was obtained.

[0074] In contrast, in Test Example 7, in which Adhesive A and Adhesive C were combined, the shear peel strength was 0.73 MPa at 80°C and 1.21 MPa at -40°C. Thus, sufficient shear peel strength was obtained in Test Example 7 across the entire temperature range. In addition, in Test Example 7, flexibility in the low-temperature range is also sufficiently compensated by Adhesive C, which has a shear storage modulus of 1.0 × 10 7 [Pa] or less at -40 [°C] (see Table 1).

[0075] In addition, in Test Examples 5 to 7 in which no interfacial peeling occurred, the average value of the shear peel strengths (three values) at 80 [°C], 25 [°C] and -40 [°C] was 0.57 [MPa] for Test Example 5, 0.25 [MPa] for Test Example 6 and 0.98 [MPa] for Test Example 7. In this way, in Test Examples 5 to 7 in which no interfacial peeling occurred, Test Example 7 in which Adhesive A and Adhesive C were combined had an average shear peel strength in the range of -40 [°C] to 80 [°C], which is higher than that of Test Examples 5 and 6 using Adhesive C made of a low-temperature resistant type pressure-sensitive adhesive tape.

[0076] It should be noted that the average shear peel strength in the range of -40 [°C] to 80 [°C] was defined here as the average value of the shear peel strengths at three points, 80 [°C], 25 [°C] and -40 [°C], as described above, and was not remarkably different from the average value at more than three temperatures.

[0077] It could be considered from the result of the above evaluation of the shear stress that when the glass plate structure 15 and the mounting member 17 were adhesively fixed to each other by the adhesive layer 20, which is a combination of the first adhesive layer 21 made of the adhesive C having a shear storage modulus of 1.0 × 10 7 [Pa] or less at -40 [°C], and the second adhesive layer 23 made of the adhesive A having a shear peel stress of 0.2 [MPa] or more at 80 [°C], a high fixing strength between the glass plate structure 15 and the mounting member 17 could be maintained regardless of the temperature change in the assumed temperature range for use (-40 [°C] to 80 [°C]). Accordingly, even in extremely hot or cold areas, the exciter 13 or the member in which the connecting member 19 and the exciter 13 are integrated can be stably attached to the glass plate structure 15, and a reduction in the quality of the sound emitted from the glass diaphragm 11 and a falling off of the exciter 13 due to displacement of the exciter 13 can be prevented. (Assessment of vibration transmission capacity)(1) Assessment method

[0078] Fig. 11 is a schematic design diagram of a test apparatus illustrating a method for evaluating vibration transmissibility.

[0079] As in Fig. As shown in Figure 11, a mounting member 115 was adhered to a main surface 111a of a glass plate structure 111 made of laminated glass through an adhesive layer 113, and an exciter 117 was attached to the mounting member 115. A signal was input to the exciter 117 to vibrate at 50 Hz, and the vibration was measured by an acceleration sensor 119 mounted on a main surface 111b of the glass plate structure 111 on a side opposite to the side to which the mounting member 115 was attached. Then, a vibration transmission delay was determined as a difference between the measurement signal and the output signal.

[0080] The glass plate structure 111 used was a laminated glass comprising two glass plates each having a width of 200 [mm], a length of 300 [mm] and a thickness of 1.8 [mm], sandwiching an intermediate layer made of polyvinyl butyral (PVB) and having a thickness of 0.76 [mm]. (2) Test samples 8 to 10 used as adhesive layer 113 Test example 8: an adhesive A having a thickness of 0.05 [mm] Test example 9: an adhesive A having a thickness of 0.50 [mm] Test Example 10: a combination of an adhesive A having a thickness of 0.05 [mm] and an adhesive C having a thickness of 0.05 [mm]

[0081] Note that in Test Example 10 in which the adhesive A and the adhesive C were combined, the adhesive layer 113 was also formed by alternatively arranging strips of the adhesive A and the adhesive C, and the area ratio of the adhesive A to the adhesive C was set to 1:1. (3) Evaluation results

[0082] The evaluation results are shown in Table 3. Table 3 thickness Vibration transmission delay Test example 8 0.05 mm 17.09 ms Test example 9 0.50 mm 21.01 ms Test example 10 0.05 mm 17.11 ms

[0083] As shown in Table 3, in Test Example 8, which used Adhesive A with a thickness of 0.05 mm, the vibration transmission delay was reduced to 17.09 ms. In contrast, in Test Example 9, which used Adhesive A with a thickness of 0.50 mm, the vibration transmission delay was 21.01 ms. This shows that as the thickness increases, the influence of dynamic viscoelasticity of Adhesive A increases, and vibration is absorbed.

[0084] In addition, in Test Example 10, in which adhesive A and adhesive C were combined, each having a thickness of 0.05 [mm], the vibration transmission delay was also reduced to 17.11 [mm]. That is, it can be observed that the vibration transmission delay is greatly influenced by the thickness of the adhesive, so even in the case of Test Example 10, in which adhesive A and adhesive C were combined, when the thickness is small, the vibration transmission delay can be sufficiently reduced.

[0085] As described above, the present invention is not limited to the above-described embodiment, and combinations of the configurations in the embodiment with each other, modifications and applications by those skilled in the art based on the description of the specification and known techniques are also conceived by the present invention and are included in the scope of protection.

[0086] For example, the first modification, which was Fig. 5, the glass membrane 11 is described in which the first adhesive layer 21 and the second adhesive layer 23 have portions spaced apart from each other, but even in this case, the arrangement pattern of the first adhesive layer 21 and the second adhesive layer 23 is not limited. Another example of the arrangement pattern may be an arrangement pattern as shown in Fig. 12A and Fig. 12B, which are a schematic cross-sectional view and a schematic plan view of the adhesive layer, respectively. The planar shapes, sizes, and a pitch of the first adhesive layer 21 and the second adhesive layer 23 shown in Fig. 12B are also an example. It should be noted that Fig. 12A shows a state where the exciter 13 (a member to which the exciter 13 and the connecting member 19 are fixed) is not attached to the mounting member 17.

[0087] As described above, the following items are disclosed in the present specification.

[0088] (1) A glass membrane comprising: a glass plate structure; a mounting element fixed to the glass plate structure and to which an exciter for vibrating the glass plate structure is to be attached; and an adhesive layer in contact with the glass plate structure and the mounting element, in which the adhesive layer comprises a first adhesive layer and a second adhesive layer made of different materials, a material of the first adhesive layer differs from a material of the second adhesive layer, the first adhesive layer has a shear storage modulus of 1.0 × 10 7 [Pa] or less at -40 [°C], and the second adhesive layer has a shear peel strength of 0.2 [MPa] or more at 80 [°C].

[0089] According to the glass membrane having this configuration, the glass plate structure and the mounting member to which a connecting member to be fixed to the exciter is to be attached can be easily fixed to each other with a simple structure by the adhesive layer disposed between the glass plate structure and the mounting member.

[0090] In addition, the first adhesive layer and the second adhesive layer, which form the adhesive layer, are made of different materials. The first adhesive layer has a shear storage modulus of 1.0 × 10 7 [Pa] or less at -40 [°C], and the second adhesive layer has a shear peel strength of 0.2 [MPa] or more at 80 [°C]. Therefore, regardless of temperature changes, a high bonding strength can be maintained between the glass plate structure and the mounting member. Accordingly, even in extremely hot or cold areas, the exciter or a member in which the connecting member and the exciter are integrated can be stably attached to the glass plate structure, and a reduction in the quality of sound emitted from the glass diaphragm and a fall-off of the exciter due to displacement of the exciter can be prevented.

[0091] (2) The glass membrane according to (1), wherein the first adhesive layer and the second adhesive layer are in contact with both the glass plate structure and the mounting member.

[0092] According to the glass membrane having this configuration, the mounting member can be satisfactorily fixed to the glass plate structure by the first adhesive layer and the second adhesive layer being in contact with both the glass plate structure and the mounting member.

[0093] (3) The glass membrane according to (1) or (2), wherein the first adhesive layer and the second adhesive layer have portions spaced apart from each other.

[0094] According to the glass membrane having this configuration, since the first adhesive layer and the second adhesive layer have portions spaced apart from each other, even if the first adhesive layer and the second adhesive layer thermally expand due to a temperature change, generation of stress caused by the first adhesive layer and the second adhesive layer interfering with each other can be prevented.

[0095] (4) The glass membrane according to any one of (1) to (3), wherein the mounting member has a step toward the glass plate structure.

[0096] According to the glass membrane having this configuration, when the mounting member has a step toward the glass plate structure, an area of ​​the mounting member at a side fixed to the glass plate structure can be easily increased, and an adhesive strength of the mounting member to the glass plate structure by the first adhesive layer and the second adhesive layer can be increased.

[0097] (5) The glass membrane according to any one of (1) to (4), wherein the first adhesive layer and / or the second adhesive layer has / have a loss coefficient tan δ of 0.01 or more at -40 [°C].

[0098] According to the glass membrane having this configuration, since the first adhesive layer and / or the second adhesive layer has / have a loss coefficient tan δ of 0.01 or more at -40 [°C], impact resistance in cold areas is improved and a firmly fixed state of the mounting member to the glass plate structure can be maintained more satisfactorily.

[0099] (6) The glass membrane according to any one of (1) to (5), wherein the adhesive layer has an average shear peel strength of 0.2 [MPa] or more in a range of -40 [°C] to 80 [°C].

[0100] According to the glass membrane having this configuration, since the adhesive layer has an average shear peel strength of 0.2 [MPa] or more in the range of -40 [°C] to 80 [°C], a fixing structure of the mounting member to the glass plate structure can be made more resistant to the temperature change.

[0101] (7) The glass membrane according to any one of (1) to (6), wherein a thickness of the first adhesive layer and a thickness of the second adhesive layer are 1 [µm] to 1.0 [mm].

[0102] According to the glass diaphragm having this configuration, since the thickness of the first adhesive layer and the thickness of the second adhesive layer are 1 [µm] to 1.0 [mm], the vibration of the exciter can be efficiently transmitted to the glass plate structure by means of the mounting member while the adhesive strength of the mounting member to the glass plate structure is sufficiently ensured, and an acoustic effect is improved.

[0103] (8) The glass membrane according to (7), in which the thickness of the first adhesive layer is approximately the same as the thickness of the second adhesive layer.

[0104] According to the glass membrane having this configuration, since the thickness of the first adhesive layer is approximately the same as the thickness of the second adhesive layer, the mounting member can be adhesively fixed to the glass plate structure by the first adhesive layer and the second adhesive layer in a well-balanced manner.

[0105] (9) The glass membrane according to any one of (1) to (8), wherein a ratio of an area S1 of the first adhesive layer to an area S2 of the second adhesive layer in a plan view of the glass plate structure is in a range of 1:0.01 to 1:100.

[0106] According to the glass membrane having this configuration, the area of ​​the first adhesive layer and the second adhesive layer in contact with the glass plate structure can be adjusted to have an appropriate ratio, and the mounting member can be satisfactorily adhered to the glass plate structure by the first adhesive layer and the second adhesive layer.

[0107] (10) The glass membrane according to (9), in which the total area of ​​the surface area S1 and the surface area S2 is 100 [mm 2 ] or more.

[0108] According to the glass membrane having this configuration, the surface areas of the first adhesive layer and the second adhesive layer in contact with the glass plate structure can be sufficiently ensured, and the mounting member can be satisfactorily adhered to the glass plate structure by the first adhesive layer and the second adhesive layer.

[0109] (11) The glass membrane according to any one of (1) to (10), wherein a center of gravity of the mounting member overlaps one of the first adhesive layer and the second adhesive layer in a plan view of the glass plate structure, and one of the first adhesive layer and the second adhesive layer is arranged in a first region which is point-symmetric with respect to the center of gravity in the plan view of the glass plate structure.

[0110] According to the glass membrane having this configuration, since one of the first adhesive layer and the second adhesive layer overlaps the center of gravity of the mounting member and is arranged in the first region that is point-symmetrical with respect to the center of gravity of the mounting member in the plan view of the glass plate structure, an adhesive force of one of the first adhesive layer and the second adhesive layer can be applied between the glass plate structure and the mounting member in a well-balanced manner. Accordingly, the mounting member can be adhesively fixed to the glass plate structure in a well-balanced manner.

[0111] (12) The glass membrane according to (11), wherein the other of the first adhesive layer and the second adhesive layer is arranged in a second region which is point-symmetric with respect to the center of gravity.

[0112] According to the glass membrane having this configuration, since the other of the first adhesive layer and the second adhesive layer is disposed in the second region that is point-symmetrical with respect to the center of gravity of the mounting member in the plan view of the glass plate structure, an adhesive force of the other of the first adhesive layer and the second adhesive layer can be applied between the glass plate structure and the mounting member in a well-balanced manner. Accordingly, the mounting member can be adhesively fixed to the glass plate structure in a more balanced manner.

[0113] (13) A glass membrane with an exciter attached, comprising: the glass membrane according to any one of (1) to (12); and the exciter.

[0114] According to the exciter-mounted glass membrane having this configuration, the connecting member is fixed to the mounting member fixed to the glass plate structure, and accordingly, the glass membrane can be made into an exciter-mounted glass membrane including an exciter.

[0115] It should be noted that this application is based on a Japanese patent application (No. 2022-082516) filed on May 19, 2022, the contents of which are incorporated herein by reference. List of reference symbols 11 Glass membrane 13 pathogens 15 Glass plate structure 17 Mounting element 19 Connecting element 20 adhesive layers 21 first adhesive layer 23 second adhesive layer 31a level 100 glass membrane with attached exciter G Center of gravity QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] WO 2021 / 229179

[0003] WO 2021 / 229180

[0003] WO 2019 / 172076

[0003] JP 2010-263512 A

[0003] JP 2009-100223 A

[0003] JP 2022-082516

[0115] < / haftmittellage> < / montierelement> < / glasplattenstruktur>

Claims

[1] Glass membrane which has: a glass plate structure; a mounting element fixed to the glass plate structure and to which an exciter for vibrating the glass plate structure is to be attached; and an adhesive layer in contact with the glass plate structure and the mounting element, wherein the adhesive layer has a first adhesive layer and a second adhesive layer, a material of the first adhesive layer differs from a material of the second adhesive layer, the first adhesive layer has a shear storage modulus of 1.0 × 10 7 [Pa] or less at -40 [°C], and the second adhesive layer has a shear peel strength of 0.2 [MPa] or more at 80 [°C]. [2] The glass membrane according to claim 1, wherein the first adhesive layer and the second adhesive layer are in contact with both the glass plate structure and the mounting member. [3] The glass membrane according to claim 1, wherein the first adhesive layer and the second adhesive layer have portions spaced apart from each other. [4] The glass membrane according to claim 1, wherein the mounting member has a step toward the glass plate structure. [5] The glass membrane according to claim 1, wherein the first adhesive layer and / or the second adhesive layer has / have a loss coefficient tan δ of 0.01 or more at -40 [°C]. [6] The glass membrane according to claim 1, wherein the adhesive layer has an average shear peel strength of 0.2 [MPa] or more in a range of -40 [°C] to 80 [°C]. [7] The glass membrane according to claim 1, wherein a thickness of the first adhesive layer and a thickness of the second adhesive layer are 1 [µm] to 1.0 [mm]. [8] The glass membrane according to claim 7, wherein the thickness of the first adhesive layer is approximately the same as the thickness of the second adhesive layer. [9] The glass membrane according to claim 1, wherein a ratio of an area S1 of the first adhesive layer to an area S2 of the second adhesive layer in a plan view of the glass plate structure is in a range of 1:0.01 to 1:

100. [10] Glass membrane according to claim 9, wherein a total area of ​​the surface area S1 and the surface area S2 is 100 [mm 2 ] or more. [11] The glass membrane according to claim 1, wherein a center of gravity of the mounting member overlaps one of the first adhesive layer and the second adhesive layer in a plan view of the glass plate structure, and the one of the first adhesive layer and the second adhesive layer is arranged in a first region that is point-symmetric with respect to the center of gravity in the plan view of the glass plate structure. [12] The glass membrane according to claim 11, wherein the other of the first adhesive layer and the second adhesive layer is arranged in a second region which is point-symmetric with respect to the center of gravity. [13] Glass membrane with attached exciter, which has: the glass membrane according to any one of claims 1 to 12; and the pathogen.

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