JP7845104B2 - Glass diaphragm, glass diaphragm with transducer, method for manufacturing a glass diaphragm, and method for manufacturing a glass diaphragm with transducer - Google Patents

Description

This invention relates to a glass diaphragm, a glass diaphragm with a transducer, a method for manufacturing a glass diaphragm, and a method for manufacturing a glass diaphragm with a transducer.

In recent years, technologies have been explored for using various plate-shaped components, such as components for electronic equipment, vehicle windows, and interior components for transportation machinery like vehicles, to vibrate and function as speakers. For example, Patent Documents 1 to 6 disclose various structures for transmitting the vibrations of an electrically vibrating exciter (vibrator) to a diaphragm, such as a glass plate.

Patent Document 1 discloses a structure in which a sole, base, and attachment are laminated in that order on the main surface of a glass plate, the sole and base are fixed by a plastic portion covering a part of the glass plate, and a vibrator is connected to the attachment on the fixed base.

International Publication No. 2021/229179 International Publication No. 2021/229180 International Publication No. 2019/172076 Japanese Patent Publication No. 2010-263512 Japanese Patent Publication No. 2009-100223 Japanese Patent Publication No. 2013-198082

However, mounting structures for such transducers on glass plates had the risk of displacement of the mounting position due to continuous use of the vibrating transducer, leading to a decrease in sound reproduction quality or even the transducer itself falling off. Furthermore, structures like the one described in Patent Document 1, where the sole and base are fixed to the glass plate by plastic parts, had problems such as a complicated configuration and difficulty in stably overcoating the plastic parts onto the sole and base. Additionally, temperature changes could reduce the fixing strength of the sole and base by the plastic parts.

Therefore, the present invention aims to provide a glass diaphragm, a glass diaphragm with a transducer, a method for manufacturing a glass diaphragm, and a method for manufacturing a glass diaphragm with a transducer, which allow for stable attachment of a transducer to a glass plate structure, suppression of transducer detachment, and suppression of deterioration in the quality of sound emitted from the glass diaphragm.

The present invention consists of the following configuration.
(1) Glass plate structure and
A mounting portion fixed to the glass plate structure and to which a vibrator that vibrates the glass plate structure is attached,
The glass plate structure has a holder along its edge that faces the first main surface of the glass plate structure,
The mounting portion includes a main mounting portion that includes a connecting portion to which the transducer is attached, and an extension portion that connects the main mounting portion and the holder.
The extension is a glass diaphragm having a damping coefficient η of 0.01 or more, and at least a portion of it is positioned at a distance from the glass plate structure.
(2) A glass diaphragm with a vibrator, comprising the glass diaphragm described in (1) above and the vibrator connected to the connection part of the mounting part.
(3) A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached, a holder fixed to the glass plate structure, and an extension portion connecting the main mounting portion and the holder,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing the extension, which has a core layer and a covering portion that covers the core layer and has higher rigidity than the core layer, between the main mounting portion and the holder without contacting the glass plate structure.
(4) A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached and which has a covering portion extending outward in a plate shape integrated thereon, and a holder fixed to the glass plate structure,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing the extension portion, which includes a portion on the main surface of the covering portion having a core layer having lower rigidity than the covering portion, to the holder without contacting the glass plate structure.
(5) After the method for manufacturing a glass diaphragm described in (3) or (4) above,
A method for manufacturing a glass diaphragm with a vibrator, comprising attaching the vibrator to the main mounting portion.

According to the present invention, a vibrator can be stably attached to a glass plate structure, its detachment can be suppressed, and the degradation of sound quality emitted from the glass diaphragm can be suppressed.

Figure 1 is a schematic plan view of a glass diaphragm with an oscillator. Figure 2 is a perspective view of the lower edge portion of a glass diaphragm with an oscillator. Figure 3 is a cross-sectional view taken along line III-III in Figure 1. Figure 4 is a magnified view of the lower edge portion of the glass diaphragm. Figure 5 is a schematic plan view of a glass diaphragm with a transducer equipped with a holder for mounting support. Figure 6 is a cross-sectional view of the extension. Figure 7 is a cross-sectional view of an extension of another structure. Figure 8A is a cross-sectional view along the thickness direction at the lower edge of a glass diaphragm, illustrating the manufacturing process of the glass diaphragm. Figure 8B is a cross-sectional view along the thickness direction at the lower edge of a glass diaphragm, illustrating the manufacturing process of the glass diaphragm. Figure 9 is a cross-sectional view along the thickness direction of the lower edge portion of a glass diaphragm, where the main mounting portion and the extension portion are connected by other connection structures. Figure 10 is a cross-sectional view taken along the thickness direction at the lower edge of a glass diaphragm, where a portion of the extension is integrally formed with the main mounting portion. Figure 11A is a cross-sectional view along the thickness direction at the lower edge of a glass diaphragm illustrating the manufacturing process of a glass diaphragm in which a portion of the extension is integrally formed with the main mounting portion. Figure 11B is a cross-sectional view along the thickness direction at the lower edge of a glass diaphragm illustrating the manufacturing process of a glass diaphragm in which a portion of the extension is integrally formed with the main mounting portion. Figure 12 is an enlarged view of the lower edge portion of the glass diaphragm according to the modified example 1. Figure 13 is an enlarged view of the lower edge portion of the glass diaphragm according to the modified example 2. Figure 14 is an enlarged view of the lower edge portion of the glass diaphragm according to the modified example 3. Figure 15 is a cross-sectional view along the thickness direction at the lower edge of the glass diaphragm according to Modification 4. Figure 16 is a cross-sectional view along the thickness direction at the lower edge of a glass diaphragm, showing another structural example of Modification 4.

The embodiments of the present invention will be described in detail below with reference to the drawings. The glass diaphragm with a transducer of this embodiment comprises a glass diaphragm and a transducer for vibrating the glass diaphragm, and can be applied, for example, to vibrating glass plates for vehicles. The following description will explain an example of applying the glass diaphragm with a transducer to a window portion such as a vehicle's side window, but the applicable vehicle window portion is not limited to this, and it may also be applied to window portions other than those of vehicles.

<Overall configuration of the glass diaphragm>
Figure 1 is a schematic plan view of the glass diaphragm 100 with an transducer. Figure 2 is a perspective view of the lower edge portion of the glass diaphragm 100 with an transducer. Figure 3 is a cross-sectional view taken along line III-III in Figure 1. Figure 4 is an enlarged view of the lower edge portion of the glass diaphragm 11.

As shown in Figures 1 to 4, the glass diaphragm 11 comprises a glass plate structure 15, a mounting portion 17, a connecting portion 19, and a holder 16. A vibrator 13, which generates vibrations, can be mounted on the main surface of the glass plate structure 15 of the glass diaphragm 11.

<Configuration of glass diaphragm with transducer>
The glass diaphragm with transducer 100 has a configuration in which a transducer 13 is mounted on a glass diaphragm 11. The transducer 13 is connected and fixed to a connecting part 19, and the connecting part 19 is fixed to a mounting part 17. The transducer 13 is fixed to the connecting part 19 by at least one of the following means: mechanical fastening with screws, bolts and nuts, rivets, keys, pins, clips, etc., and adhesive bonding. The transducer 13 and the connecting part 19 may be configured to be firmly fixed to each other with different materials, or they may be configured to be integrated as the same material. The connecting part 19 is mechanically fixed to the mounting part 17. The mounting part 17 is fixed to the first main surface 15a, which is one of the main surfaces of the glass plate structure 15. As a result, the transducer 13 is mounted to the first main surface 15a of the glass plate structure 15 via the connecting part 19 and the mounting part 17. The mounting portion 17 and the first main surface 15a are bonded and fixed together by the adhesive layer 31. Alternatively, the glass plate structure 15 may be fixed by sandwiching it between the first main surface 15a and the second main surface 15b so that they are in contact.

For example, when using the glass diaphragm 11 as a vehicle side window, the transducer 13 is positioned in a region below the beltline BL (see Figure 1). This allows the sound generated from the glass plate structure 15 to be supplied to the vehicle interior. The beltline BL corresponds to the lower edge of the opening when the side window is fully closed, when the side window is installed in the vehicle (door).

The vibrator 13 is a vibration excitation device that uses the object it contacts as a diaphragm to generate sound from the diaphragm. The vibrator-equipped glass diaphragm 100, to which the vibrator 13 is attached, vibrates the glass diaphragm 11 by the drive of the vibrator 13 to generate the desired sound. The vibrator 13 used here, although not shown in the illustration, is an exciter comprising a coil section electrically connected to an external device, a magnetic circuit section, and an excitation section. In this exciter, when an electrical sound signal from an external device is input to the coil section, vibration occurs in the coil section or magnetic circuit section due to the interaction between the coil section and the magnetic circuit section. This vibration in the coil section or magnetic circuit section is transmitted to the excitation section, which then generates vibration. The vibrator 13 is also equipped with conductive wires (not shown) to drive the vibrator 13.

<Glass plate structure>
The glass plate structure 15 constituting the glass diaphragm 11 has a first main surface 15a and a second main surface 15b. Here, the glass plate structure 15 is exemplified as a single glass plate (single-pane glass), but other forms such as laminated glass, in which an intermediate layer such as a resin interlayer or liquid is sandwiched between a pair of glass plates, are also possible. The 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. This makes it possible to achieve sufficient strength in the glass plate structure 15.

<Mounting section>
The mounting portion 17 has a main mounting portion 21 and an extension portion 23. The mounting portion 17 can be made from materials such as metal materials such as aluminum or aluminum alloys, titanium alloys, magnesium alloys, and stainless steel, ceramics, glass, resin materials, carbon fibers, and composite materials made from these. Examples of resin materials include acrylic resins such as polymethyl methacrylate resin (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), urethane, polypropylene (PP), polybutylene terephthalate (PBT), nylon 66 (PA66), polyphenylene sulfide (PPS), and ABS resin, which can be made into a structure with excellent moldability. Alternatively, materials may be made by mixing glass fibers or the like into the above materials to improve strength. By using the above materials, the mounting portion 17 will not crack and sufficient connection strength can be obtained.

The main mounting portion 21 is formed in a circular shape in a plan view of the glass plate structure 15. However, the outer edge shape of the main mounting portion 21 in a plan view of the glass plate structure 15 is not limited to a circle; it may be any shape, such as a polygon.

The main mounting portion 21 has a screw hole 25 on the side opposite to the side fixed to the glass plate structure 15. The connecting portion 19 provided on the transducer 13 has a screw shaft 27, and by screwing this screw shaft 27 into the screw hole 25 of the main mounting portion 21 fixed to the glass plate structure 15, the connecting portion 19 is fastened to the main mounting portion 21 (see Figure 2). Furthermore, by loosening the connecting portion 19 screwed into the main mounting portion 21, the transducer 13 (in this case, the member to which the transducer 13 and the connecting portion 19 are fixed) can be removed from the glass plate structure 15, so the transducer 13 can be easily replaced. Note that the screw structure between the connecting portion 19 and the main mounting portion 21 is not limited to a combination in which the connecting portion 19 has a convex screw portion and the main mounting portion 21 has a concave screw portion that is screwed into it, but may also have a concave screw portion and the main mounting portion 21 has a convex screw portion that is screwed into it. Furthermore, the fixing structure between the main mounting portion 21 and the connecting portion 19 is not limited to a screw structure; for example, mechanical fastening using rivets, keys, pins, clips, etc., may also be used.

An adhesive layer 31 is provided between the main mounting portion 21 and the glass plate structure 15 (see Figure 3). This adhesive layer 31 has a thickness of 0.50 [mm] or less, and for example, an adhesive tape made of resin such as acrylic, epoxy, silicone, urethane, or phenol is used. Furthermore, it is preferable that the area of the adhesive layer 31 in a plan view of the glass plate structure 15 is 50 [ ^mm² ] or more. The main mounting portion 21 is then bonded and fixed to the first main surface 15a of the glass plate structure 15 by the adhesive layer 31. This allows vibrations from the transducer 13 to be transmitted well to the glass plate structure 15, thereby enhancing the acoustic effect.

The extension portion 23 is formed in a strip shape, with one end 23a connected to the main mounting portion 21. By making the main mounting portion 21 and the extension portion 23 separate components, the shape and structure of each component can be simplified, making manufacturing easier. The extension portion 23 may also be integrally formed with the main mounting portion 21. Here, the case where the extension portion 23 is a separate component from the main mounting portion 21 is illustrated.

The main mounting portion 21 has a projection 22 that protrudes radially outward from its circumferential surface, and the extension portion 23 is positioned so that one end 23a overlaps the projection 22 (see Figure 3). The extension portion 23 is connected to the projection 22 of the main mounting portion 21 by fastening and fixing it with a screw 24 at one end 23a. Thus, the extension portion 23 is mechanically fastened to the main mounting portion 21 at one end 23a. The extension portion 23, with one end 23a connected to the main mounting portion 21, extends laterally from the outer peripheral edge of the main mounting portion 21 along the first main surface 15a of the glass plate structure 15, moving away from the first main surface 15a.

Furthermore, the connection structure between the main mount portion 21 and the extension portion 23 can be fastened with screws 24, or by means of mechanical fastening using bolts and nuts, rivets, keys, pins, clips, etc., welding, or insertion. The main mount portion 21 and the extension portion 23 may also be further secured with adhesive or abrasive in addition to the mechanical engagement means described above. In this case, when connecting the extension portion 23 to the projection portion 22 of the main mount portion 21 with mechanical engagement means, it is preferable to temporarily secure it with adhesive tape or abrasive.

<Holder>
The holder 16 is positioned along the edge of the glass plate structure 15, and the other end 23b of the extension 23 of the mounting portion 17 is connected to this holder 16. When the glass plate structure 15 is used, for example, as a sliding window for a vehicle in a side window, when it is assembled to the vehicle body, the holder 16 is attached to the lower end of the glass plate structure 15 and is raised and lowered by a lifting mechanism (not shown). In other words, the holder 16 can be, for example, the holder of a lifting mechanism. As shown in Figure 1, in a plan view of the glass plate structure 15, the holder 16 is located outside the edge of the glass plate structure 15 and has a connecting portion 35 for mechanically connecting the glass plate structure 15 so that it can slide. The connecting portion 35 is formed in a plate shape and has a connecting hole 37 for connecting a rod (not shown) of the lifting mechanism. By mechanically connecting the rod of the lifting mechanism to the connecting portion 35 of the holder 16, the glass plate structure 15 can be easily made slidable.

The holder 16 has a first plate portion 41, a second plate portion 42, and a third plate portion 43 (see Figures 2 and 3). The first plate portion 41 is positioned opposite the first main surface 15a of the glass plate structure 15. The second plate portion 42 is positioned opposite the lower end surface 15c of the glass plate structure 15. The third plate portion 43 is positioned opposite the second main surface 15b of the glass plate structure 15. Thus, the holder 16, having the first plate portion 41, the second plate portion 42, and the third plate portion 43, is formed in a U-shape in a cross-sectional view along the thickness direction of the glass plate structure 15, and is fitted and attached to the lower edge of the glass plate structure 15. As a result, the glass plate structure 15 is held and gripped by the first plate portion 41 and the third plate portion 43 of the holder 16.

Furthermore, the holder 16 has resin portions 45 on the side of the first plate portion 41 facing the first main surface 15a of the glass plate structure 15 and on the side of the third plate portion 43 facing the second main surface 15b of the glass plate structure 15. The glass plate structure 15 is gripped by the first plate portion 41 and the third plate portion 43 of the holder 16 via the resin portions 45. The resin portion 45 is a resin layer containing materials such as rubber and adhesive, and its loss coefficient tanδ is preferably 0.01 or more, and its shear storage modulus at 25 [°C] is preferably 1.0 × ^10⁸ [Pa] or less. Furthermore, the linear expansion coefficient of the resin portion 45 from -40 [°C] to 90 [°C] is preferably 1.0 × ^10⁻⁵ [/°C] or more. By providing the resin portion 45, it acts as a spacer, allowing the holder 16 to be held and fixed to the glass plate structure 15 without the first plate portion 41 and the third plate portion 42 coming into zero-distance contact with the glass plate structure 15. Furthermore, the resin portion 45 mitigates the difference in linear expansion between the glass plate structure 15 and the first plate portion 41 and the third plate portion 42, thereby reducing the risk of cracking of these materials and the detachment of the holder 16.

The holder 16 is positioned such that the other end 23b of the extension 23 overlaps the first plate portion 41. The other end 23b of the extension 23 is fastened and secured to the first plate portion 41 by a screw 47. Thus, the other end 23b of the extension 23 is mechanically fastened to the holder 16. In addition to fastening with a screw 47, other means of connection between the holder 16 and the extension 23 include mechanical fastening with bolts and nuts, rivets, keys, pins, clips, welding, and insertion engagement. Furthermore, the holder 16 and the extension 23 may be further secured with adhesive or abrasive in addition to the mechanical engagement means described above. In this case, it is preferable to temporarily fix the extension 23 with adhesive tape or abrasive when mechanically connecting it to the first plate portion 41 of the holder 16.

Furthermore, the holder 16 is not limited to one having a plate-shaped connecting portion 35; it may also have a connecting portion on its side. Also, instead of using the holder 16 for the lifting mechanism, a holder for mount support may be provided as the holder to which the extension portion 23 of the mount portion 17 is connected.

Figure 5 is a schematic plan view of a glass diaphragm 100 with a vibrator equipped with a holder 14 for mounting support.
The glass diaphragm 100 with a vibrator shown in Figure 5 is equipped with a mount support holder 14 in addition to (at a different location from) the holder 16 for the lifting mechanism. In this way, the mount support holder 14 may be provided on the glass plate structure 15, and the end of the extension 23 of the mounting portion 17 may be connected to this holder 14. In this case, the mounting portion 17 can be placed at any position on the first main surface 15a of the glass plate structure 15, thus increasing the degree of freedom in positioning the glass diaphragm 11 to provide the desired sound. Furthermore, since the holder 14 can be made using the same parts as the holder 16 for the lifting mechanism, excluding the connecting portion 35, there is also the advantage that the holder 14 can be easily manufactured by modifying the holder 16.

<Configuration of the extension section>
The plate-shaped extension 23 constituting the mounting portion 17 has one end 23a connected to the main mounting portion 21. Furthermore, the other end 23b of the extension 23, opposite to the main mounting portion 21, overlaps with the holder 16 in a plan view of the glass plate structure 15, and this other end 23b is connected to the holder 16. As a result, the main mounting portion 21 of the mounting portion 17 to which the connecting portion 19 fixed to the transducer 13 is attached is supported by the holder 16 by the extension 23. In addition, the extension 23 connected to the main mounting portion 21 and the holder 16 is positioned spaced apart from the glass plate structure 15 (see Figures 2 and 3). In other words, the medium between the glass plate structure 15 and the extension 23 is air.

Furthermore, the extension portion 23 may be positioned with a portion of it separated from the glass plate structure 15, and a bubble structure such as sponge or urethane foam may be placed between the glass plate structure 15 and the extension portion 23. That is, to suppress vibration transmission from the extension portion 23 to the glass plate structure 15, it is preferable to provide a medium (air, bubble structure, etc.) between the extension portion 23 and the glass plate structure 15. Also, if one end 23a of the extension portion 23 is connected to the main mounting portion 21, the other end 23b may protrude beyond the holder 16 in a plan view of the glass plate structure 15. In other words, in Figure 4, the other end 23b of the extension portion 23 may protrude from the end of the holder 16 opposite to the mounting portion 17 side.

If the extension 23 connected to the main mount 21 and the holder 16 uses a structure such as wire, fiber, or metal mesh, deformation of the extension 23 itself may occur, causing misalignment. In the event that the mount 21 falls, the extension 23 may not be able to support the weight and may break, causing it to separate. Furthermore, while the extension 23 can have the shape of a round bar or hollow bar and be fastened at both ends (23a, 23b), vibrations from the main mount 21 are transmitted to the holder 16, potentially causing the extension 23 itself to self-excite and impairing acoustic performance. Therefore, a structure with a high damping coefficient η is necessary. Specifically, the damping coefficient η should be 0.01 or higher. Moreover, the extension 23 is positioned at a distance from the glass plate structure 15. Therefore, the transmission of vibrations from the transducer 13 from the main mount 21 of the mount 17 to the holder 16 can be suppressed. This allows for smooth transmission of vibrations from the transducer 13 to the glass plate structure 15, enhancing the acoustic effect, and also suppresses the generation of abnormal noise due to vibrations of the extension 23 itself. The damping coefficient η of the extension 23 is preferably 0.05 or higher, more preferably 0.10 or higher, even more preferably 0.30 or higher, and particularly preferably 0.50 or higher. Methods for measuring the damping coefficient η of the extension 23 include, for example, resonance methods measured near the resonant frequency, such as the damping rate method, the half-width method, and the mechanical impedance method.

Figure 6 is a cross-sectional view of the extension 23. Figure 7 is a cross-sectional view of the extension 23 with a different structure.
As shown in Figure 6, the extension 23 has a composite structure consisting of a core layer 51 and a covering portion 61 having higher rigidity than the core layer 51. The core layer 51 is formed in a plate shape having a first main surface 53 and a second main surface 55. The covering portion 61 has a first covering portion 63 and a second covering portion 65. The first covering portion 63 is superimposed on the first main surface 53 of the core layer 51 and covers at least a part of the first main surface 53 of the core layer 51, and the second covering portion 65 is superimposed on the second main surface 55 of the core layer 51 and covers at least a part of the second main surface 55 of the core layer 51. Preferably, the first covering portion 63 covers the entire first main surface 53 of the core layer 51, and the second covering portion 65 covers the entire second main surface 55 of the core layer 51. The core layer 51 is in close contact with the first covering portion 63 and the second covering portion 65 without adhesion or sliding against each other. In other words, as shown in Figure 6, the extension 23 is a constrained type vibration damping member in which a first coating portion 63 and a second coating portion 65 with high rigidity are superimposed on both sides of a vibration damping material consisting of a core layer 51 made of viscoelastic material.

In Figure 6, the extension 23 should preferably have a structure in which the first covering portion 63 and the second covering portion 65 do not touch each other. This is because if there are parts where the first covering portion 63 and the second covering portion 65 touch each other, the vibration damping effect of the extension 23 will decrease, degrading the acoustic effect. Furthermore, while the core layer 51 is preferably sandwiched continuously between the first covering portion 63 and the second covering portion 65, the core layer 51 may be arranged intermittently in the longitudinal direction of the extension 23, and multiple core layer 51 regions may be spaced apart. In this case, the space between multiple adjacent, spaced-apart core layer 51 may be an air layer.

Furthermore, as shown in Figure 7, the extension 23 may be an unrestrained vibration damping member in which a covering portion 61 consisting of a highly rigid first covering portion 63 is superimposed on the first main surface 53, which is one side of the viscoelastic core layer 51. Alternatively, the extension 23 may be an unrestrained vibration damping member in which a covering portion 61 consisting of a highly rigid second covering portion 65 is superimposed on the second main surface 55, which is one side of the core layer 51.

The extension 23 has a core layer 51 made of resin, and the covering portion 61 has at least one of metal and hard plastic. This increases the vibration damping efficiency in the extension 23 due to the resin core layer 51, and further increases the strength of the extension 23 through the covering portion 61, which has at least one of metal and hard plastic, thereby increasing the support strength of the main mount portion 21 to the holder 16.

In the extension 23, the core layer 51 is continuously arranged from one end 23a on the main mounting portion 21 side to the other end 23b on the opposite side of the main mounting portion 21, in a plan view of the glass plate structure 15. This enhances the vibration damping efficiency in the extension 23. Note that, even in the extension 23 shown in Figure 7, the core layer 51 may be arranged intermittently along the longitudinal direction of the extension 23.

Examples of resin materials for the core layer 51 include urethane, epoxy, and silicone. The loss coefficient tanδ, determined from dynamic viscoelasticity measurement of the resin material of the core layer 51, is preferably 0.1 or higher, more preferably 0.3 or higher, and even more preferably 0.5 or higher. The loss coefficient tanδ can be measured using a dynamic viscoelasticity measuring device, specifically the DVA®-200 (IT Measurement Control Co., Ltd.).

Examples of metal materials for the coating portion 61 include aluminum or aluminum alloys, stainless steel, and titanium alloys. Surface coating enhances water repellency and rust prevention. Examples of hard plastic materials for the coating portion 61 include acrylic resins such as polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), urethane, polypropylene (PP), polybutylene terephthalate (PBT), nylon 66 (PA66), polyphenylene sulfide (PPS), ABS resin, or fiber-reinforced plastics containing reinforcing fibers. The glass transition temperature of the hard plastic material for the coating portion 61 is preferably 50°C or higher, more preferably 60°C or higher, and even more preferably 80°C or higher.

The extension portion 23 may have a width in the shorter direction within the range of 0.1 mm to 50 mm. This ensures sufficient support strength for the main mount portion 21 by the extension portion 23. The width of the extension portion 23 in the shorter direction is preferably 30 mm or less, and more preferably 10 mm or less. Furthermore, to support the main mount portion 21, which becomes heavier when the transducer 13 is assembled, the width of the extension portion 23 in the shorter direction is preferably 1 mm or more, more preferably 3 mm or more, and even more preferably 5 mm or more.

Furthermore, the extension portion 23 may have a thickness of 20 mm or less. This effectively suppresses the transmission of vibrations from the main mount portion 21 to the holder 16 via the extension portion 23. The thickness of the extension portion 23 is preferably 10 mm or less, more preferably 5 mm or less, and even more preferably 1 mm or less. Additionally, to support the main mount portion 21, which becomes heavier when the transducer 13 is assembled, the thickness of the extension portion 23 is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.5 mm or more.

Furthermore, when the extension portion has a width W in the shorter direction in a plan view of the glass plate structure 15, and a thickness t corresponding to the normal direction of the first main surface 15a of the glass plate structure 15, it can bend under shear force and appropriately dampen vibration energy, as long as it is within an appropriate aspect ratio range that allows for rigid deformation. The aspect ratio (W/t) can be 0.1 to 50, preferably 0.5 to 30, and more preferably 1 to 20.

Furthermore, the Young's modulus of the extension 23 may be 1.0 × ^10⁷ [Pa] to 1.0 × ^10¹² [Pa], preferably 1.0 × ^10⁸ [Pa] to 5.0 × ^10¹¹ [Pa], and more preferably 1.0 × ^10⁹ [Pa] to 1.0 × ^10¹¹ [Pa].

Furthermore, in a plan view of the glass plate structure 15, the shortest distance D (see Figure 4) from the center of the main mount portion 21 to the holder 16 should be 10 mm or more. If the main mount portion 21 is too close to the holder 16, vibrations from the transducer 13 assembled to the main mount portion 21 are more easily transmitted to the holder 16 via the extension portion 23. Therefore, it is preferable for the main mount portion 21 to be further away from the holder 16. In this configuration example, since the shortest distance D from the center of the main mount portion 21 to the holder 16 is 10 mm or more, the transmission of vibrations from the transducer 13 from the main mount portion 21 of the mount portion 17 to the holder 16 can be effectively suppressed. As a result, vibration transmission loss between the mount portion 17 and the glass plate structure 15 is reduced, and vibrations from the transducer 13 can be effectively transmitted to the glass plate structure 15, thereby enhancing the acoustic effect. The shortest distance D from the center of the main mount section 21 to the holder 16 is preferably 30 mm or more, and more preferably 50 mm or more. While there is no particular upper limit to the shortest distance D, a distance of 300 mm or less is exemplified due to the mounting space of the mount section 17.

As described above, in this configuration example of the glass diaphragm 11, the main mounting portion 21 of the mounting portion 17 is connected to and supported by the extension portion 23 of the holder 16. Therefore, the main mounting portion 21 of the mounting portion 17, to which the connecting portion 19 fixed to the transducer 13 is attached, can be firmly fixed to the glass plate structure 15, thereby preventing the transducer 13 from falling off the glass plate structure 15. Furthermore, the extension portion 23 connecting the main mounting portion 21 and the holder 16 has a damping coefficient η of 0.01 or higher, and it is preferable that at least a portion of it is spaced apart from the glass plate structure 15, and preferably that the entire extension portion is spaced apart from the glass plate structure 15. Therefore, the transmission of vibrations from the transducer 13 from the main mounting portion 21 of the mounting portion 17 to the holder 16 can be suppressed, and the generation of abnormal noise due to vibrations of the extension portion 23 itself can also be suppressed.

Furthermore, the extension 23 is separate from the main mount 21. One end 23a on the main mount 21 side is mechanically fastened to the main mount 21, and the other end on the holder 16 side is mechanically fastened to the holder 16. Therefore, the extension 23 can be easily added later.

Furthermore, the glass diaphragm 11 in this configuration example can be applied not only to the side windows of vehicles such as automobiles, but also to windshields, rear windows, roof glazing, front quarter windows, rear quarter windows, etc. This allows for significant contributions to three-dimensional sound systems combining the glass diaphragm 11 with existing speakers, noise cancellation systems that cancel out external noise by applying sound waves with the opposite phase, and reflection control systems that cancel out in-car music reverberation. In addition to vehicle windows, it can also be applied to building windows, structural members, and decorative panels, and can even be used as a diaphragm component for flat panel speakers.

<Method of manufacturing a glass diaphragm>
Next, a method for manufacturing the glass diaphragm 11 according to this example configuration will be described.
Figures 8A and 8B are cross-sectional views along the thickness direction at the lower edge of the glass diaphragm 11, illustrating the manufacturing process of the glass diaphragm 11.

(preparation process)
First, prepare the glass plate assembly 15, the main mounting portion 21, the holder 16, and the extension portion 23. At this time, the extension portion 23 integrates the core layer 51 and the covering portion 61. Specifically, the first covering portion 63 constituting the covering portion 61 is superimposed on the first main surface 53 of the core layer 51, and the second covering portion 65 constituting the covering portion 61 is superimposed on the second main surface 55 of the core layer 51. Note that the presence or absence of the second covering portion 65 in the extension portion 23 can be decided arbitrarily.

(Parts installation process)
As shown in Figure 8A, the main mounting portion 21 and the holder 16 are attached to the glass plate structure 15. For example, the main mounting portion 21 is bonded and fixed to the first main surface 15a of the glass plate structure 15 with an adhesive that forms the adhesive layer 31, with the projection portion 22 facing the holder 16. In addition, the U-shaped holder 16 is fitted and attached to the lower edge of the glass plate structure 15.

(Extension crosslinking process)
As shown in Figure 8B, the extension 23 is connected and fixed between the main mounting portion 21 and the holder 16 without contacting the glass plate structure 15. Specifically, one end 23a of the extension 23 is superimposed on the projection 22 of the main mounting portion 21, and the other end 23b of the extension 23 is superimposed on the first plate portion 41 of the holder 16. Then, one end 23a of the extension 23 is fastened and fixed to the projection 22 with a screw 24, and the other end 23b of the extension 23 is fastened and fixed to the first plate portion 41 of the holder 16 with a screw 47. In this way, one end 23a of the extension 23 is connected to the main mounting portion 21, and the other end 23b of the extension 23 is connected to the holder 16. As a result, the extension 23 is spanned between the main mounting portion 21 and the holder 16 while being separated from the glass plate structure 15.

Thus, according to the above manufacturing method, a glass diaphragm 11 can be manufactured in which the main mounting portion 21 and the holder 16 are attached to the glass plate structure 15, and the main mounting portion 21 is supported by the holder 16 by the extension portion 23. Furthermore, since the extension portion 23 can be added later, work efficiency can be improved.

Subsequently, by fixing the connection part 19 to the mounting part 17 and attaching the transducer 13, the transducer 13 is stably mounted, resulting in a glass diaphragm 100 with a transducer that suppresses degradation of sound quality emitted from the glass diaphragm 11 and prevents the transducer 13 from falling off.

Figure 9 is a cross-sectional view along the thickness direction of the lower edge portion of the glass diaphragm 11, where the main mounting portion 21 and the extension portion 23 are connected by other connection structures.
In the glass diaphragm 11 of the configuration example shown in Figure 9, a projection 22 having a groove 22a is formed on the wall surface of the main mount portion 21. One end 23a of the extension portion 23 is inserted into the groove 22a of the main mount portion 21 and positioned inside the groove 22a. In this way, the extension portion 23 is connected to the main mount portion 21 by having one end 23a inserted into it. The other end 23b of the extension portion 23 is fastened and fixed to the first plate portion 41 of the holder 16 by a screw 47. In this way, the extension portion 23 is connected to the main mount portion 21 and the holder 16 without one end 23a coming out of the groove 22a of the main mount portion 21.

When manufacturing the glass diaphragm 11 with this insert structure, in the extension bridge-bridging process, one end 23a of the extension 23 is inserted into the groove 22a of the projection 22 of the main mount 21, and the other end 23b of the extension 23 is superimposed on the holder 16. In this state, the other end 23b of the extension 23 is fastened and fixed to the first plate portion 41 of the holder 16 with a screw 47. This allows one end 23a of the extension 23 to be connected to the main mount 21, and the other end 23b of the extension 23 to be connected to the holder 16, while the extension 23 is spanned between the main mount 21 and the holder 16 while being separated from the glass plate structure 15. Thus, with a structure in which one end 23a of the extension 23 is inserted into the groove 22a, the extension 23 can be easily connected to the main mount 21. Furthermore, to ensure more stable fixation, the extension portion 23 may also have a structure for fastening a screw 24 (as shown in Figure 8B) to one end 23a.

Furthermore, at least a portion of the extension portion 23 may be integrally formed with the main mounting portion 21.
Figure 10 is a cross-sectional view taken along the thickness direction at the lower edge of the glass diaphragm 11, where a portion of the extension 23 is integrally formed with the main mounting portion 21.
In the glass diaphragm 11 shown in the example configuration in Figure 10, the second covering portion 65 of the extension portion 23 is integrally formed with the main mounting portion 21, and the core layer 51 and the first covering portion 63 are sequentially laminated on this second covering portion 65 to form the extension portion 23. The other end 23b of this extension portion 23 is fastened and fixed to the first plate portion 41 of the holder 16 by a screw 47, connecting the main mounting portion 21 and the holder 16. In this way, by integrally forming the second covering portion 65, which is part of the extension portion 23, with the main mounting portion 21, the connection structure of the extension portion 23 to the main mounting portion 21 can be simplified.

Next, we will explain how to manufacture the glass diaphragm 11 in this example configuration.
Figures 11A and 11B are cross-sectional views along the thickness direction of the lower edge portion of a glass diaphragm 11, illustrating the manufacturing process of a glass diaphragm 11 in which a portion of the extension 23 is integrally formed with the main mounting portion 21.

(preparation process)
First, prepare the glass plate structure 15, the main mounting part 21 in which the second covering part 65 of the extension part 23 is integrally formed, and the holder 16.

(Parts installation process)
Next, as shown in Figure 11A, the main mounting portion 21 and the holder 16 are attached to the glass plate structure 15. At this time, the main mounting portion 21 is fixed to the glass plate structure 15 so that the end of the second covering portion 65 of the extension portion 23, which is integrally formed with the main mounting portion 21, overlaps with the first plate portion 41 of the holder 16.

(Extension crosslinking process)
Furthermore, as shown in Figure 11B, the laminate that forms the other part of the extension 23, in which the first covering portion 63 is laminated on the core layer 51, is superimposed on the main surface, which is the upper surface of the second covering portion 65, with the core layer 51 facing the second covering portion 65. Then, the extension 23, consisting of the core layer 51 and the covering portion 61, is connected to the main mount portion 21, and this extension 23 is spanned between the main mount portion 21 and the holder 16, separated from the glass plate structure 15. The other end 23b of the extension 23 is fastened and fixed to the first plate portion 41 of the holder 16 with a screw 47.

Thus, according to the above manufacturing method, a glass diaphragm 11 can be manufactured in which the main mount portion 21 and the holder 16 are attached to the glass plate structure 15, and the main mount portion 21 is supported by the holder 16 by the extension portion 23. Furthermore, since the extension portion 23 is formed by stacking a laminate of the core layer 51 and the first coating portion 63 on the main surface of the second coating portion 65, which is integrally formed and extended on the main mount portion 21, and this extension portion 23 is connected and fixed to the holder 16, the connection work between the extension portion 23 and the main mount portion 21 can be omitted, improving work efficiency.

Subsequently, by fixing the connection part 19 to the mounting part 17 and attaching the transducer 13, the transducer 13 is stably mounted, resulting in a glass diaphragm 100 with a transducer that suppresses degradation of sound quality emitted from the glass diaphragm 11 and prevents the transducer 13 from falling off.

Alternatively, the first covering portion 63 and the second covering portion 65, which constitute the covering portion 61, may be integrally formed on the main mounting portion 21 at a predetermined interval, and a resin core layer 51 may be filled between the first covering portion 63 and the second covering portion 65 to form the extension portion 23.

Furthermore, the support structure for the main mounting portion 21 by the extension portion 23 of the glass diaphragm 11 described above is just one example, and can be changed to various configurations.
The following describes a modified example of the support structure of the main mounting portion 21 using the extension portion 23. In the following description, identical or corresponding parts or members are given the same or corresponding reference numerals to omit redundant explanations. Furthermore, the modified example will describe a case in which the main mounting portion 21 and the extension portion 23 are separate entities.

(Variation 1)
Figure 12 is an enlarged view of the lower edge portion of the glass diaphragm 11 according to the modified example 1.
As shown in Figure 12, in the glass diaphragm 11 according to Modification 1, the extension 23 of the mounting portion 17 is connected by fastening its other end 23b, which is the end opposite to the main mounting portion 21, to a connecting portion 35 that protrudes outward from the edge of the glass plate structure 15 in the holder 16 using a screw 47. In this Modification 1, the other end 23b of the extension 23 can be fastened together with the rod of the lifting mechanism to the connecting portion 35 of the holder 16 using a screw 47, simplifying the connection work.

(Variation 2)
Figure 13 is an enlarged view of the lower edge portion of the glass diaphragm 11 according to the modified example 2.
As shown in Figure 13, in the glass diaphragm 11 according to Modification 2, the mounting portion 17 has two extensions 23, and these two extensions 23 are connected to one holder 16. Each extension 23 is connected by fastening one end 23a to a projection 22 of the main mounting portion 21 with a screw 24. The other end 23b of one extension 23 is connected to the first plate portion 41 of the holder 16 with a screw 47, and the other end 23b of the other extension 23 is connected to the connecting portion 35 of the holder 16 with a screw 47. In this Modification 2, the main mounting portion 21 can be fixed with high support force by supporting the main mounting portion 21 on the holder 16 with the two extensions 23. Note that the number of extensions 23 is not limited to two; three or more extensions 23 may be connected to the main mounting portion 21 and the holder 16, in which case the main mounting portion 21 can be fixed to the holder 16 with even higher support force.

(Variation 3)
Figure 14 is an enlarged view of the lower edge portion of the glass diaphragm 11 according to the modified example 3.
As shown in Figure 14, in the glass diaphragm 11 according to the modified example 3, the mounting portion 17 has two extensions 23. A holder 16 for the lifting mechanism and a holder 14 for mounting support are attached to the glass plate structure 15. The main mounting portion 21 is positioned between the holders 14 and 16, and the two extensions 23 are connected to the two holders 14 and 16, respectively. One end 23a of each extension 23 is fastened to a projection 22 of the main mounting portion 21 by a screw 24. The other end 23b of one extension 23 is fastened to the first plate portion 41 of the holder 16 for the lifting mechanism by a screw 47, and the other end 23b of the other extension 23 is fastened to the holder 14 for mounting support by a screw 47. In this modified example 3 as well, the main mounting portion 21 can be supported with high support force by having the holders 14 and 16 support the main mounting portion 21 with the two extensions 23. Note that the number of extensions 23 and holders 14 and 16 is not limited to two; there may be three or more of each, in which case the main mounting portion 21 can be fixed to the holders 14 and 16 with even higher support force.

(Variation 4)
Figure 15 is a cross-sectional view along the thickness direction at the lower edge of the glass diaphragm 11 according to Modification 4. Figure 16 is a cross-sectional view along the thickness direction at the lower edge of the glass diaphragm 11 showing another structural example of Modification 4.

As shown in Figure 15, in the glass diaphragm 11 according to the modified example 4, the extension portion 23 has a bent portion 23c. The bent portion 23c is provided in the approximate center of the extension portion 23 in the longitudinal direction. At the bent portion 23c, the extension portion 23 is bent in the thickness direction, and the protruding side due to the bend is positioned with the side facing upward. One end 23a of the extension portion 23 is fastened to the projection portion 22 of the main mount portion 21 by a screw 24, and the other end 23b is fastened to the first plate portion 41 of the holder 16 by a screw 47. By providing the bent portion 23c in the extension portion 23, for example, when bridging the extension portion 23 between the main mount portion 21 and the holder 16, the extension portion 23 can be positioned while easily avoiding interference with surrounding members, etc. For example, if the holder 16 has flange portions 41a and 43a at the edges of the first plate portion 41 and the third plate portion 43, the extension portion 23 is bridged so that the bent portion 23c is positioned to correspond to the flange portion 41a of the first plate portion 41. This allows the extension portion 23 to extend beyond the flange portion 41a at the bent portion 23c, thus easily avoiding interference with the flange portion 41a of the holder 16.

Furthermore, as shown in Figure 16, if the extension 23 is fixed to the first plate portion 41 of the holder 16 by screws 47 at its bent portion 23c, the extension 23 can generate a biasing force that presses the main mounting portion 21 against the glass plate structure 15. This increases the support force of the main mounting portion 21 by the extension 23. In this case, it is preferable that the covering portion 61 of the extension 23 be made of spring steel or the like.

In the modified example 4, the glass diaphragm 11 is shown as having an extension 23 with a bent portion 23c that bends in the thickness direction. However, the bent portion 23c of the extension 23 is not limited to bending in the thickness direction; it may also be bent in the planar direction. Furthermore, the bent portion 23c may be formed at multiple locations on the extension 23.

Thus, the present invention is not limited to the embodiments described above. Combining the various components of the embodiments, modifying and applying them based on the description in this specification and well-known technology is also intended for those skilled in the art and falls within the scope of protection.

As described above, the following matters are disclosed in this specification:
(1) Glass plate structure and
A mounting portion fixed to the glass plate structure and to which a vibrator that vibrates the glass plate structure is attached,
The glass plate structure has a holder along its edge that faces the first main surface of the glass plate structure,
The mounting portion includes a main mounting portion that includes a connecting portion to which the transducer is attached, and an extension portion that connects the main mounting portion and the holder.
The extension is a glass diaphragm having a damping coefficient η of 0.01 or more, and at least a portion of it is positioned at a distance from the glass plate structure.
In this glass diaphragm configuration, the main mounting portion of the mounting section is connected to and supported by the holder via an extension portion. Therefore, the mounting portion to which the connecting portion fixed to the transducer is attached can be firmly fixed to the glass plate structure, preventing the transducer from falling off the glass plate structure. Moreover, the extension portion connecting the main mounting portion and the holder has a damping coefficient η of 0.01 or higher, and is positioned at least partially separated from the glass plate structure. Therefore, the transmission of vibrations from the transducer from the main mounting portion to the holder can be suppressed. As a result, vibrations from the transducer can be smoothly transmitted to the glass plate structure, enhancing the acoustic effect, and the generation of abnormal noise due to vibrations of the extension portion itself can also be suppressed.

(2) The glass diaphragm according to (1), wherein the extension portion comprises a core layer and a covering portion that covers at least a part of the core layer and has higher rigidity than the core layer.
This glass diaphragm allows for high strength in the extension while achieving a good vibration damping effect.

(3) The glass diaphragm according to (2), wherein the core layer is arranged continuously in a plan view of the glass plate structure from the end on the main mounting side to the end on the opposite side from the main mounting side.
With this glass diaphragm, the vibration damping efficiency in the extension is enhanced by a core layer that is continuously arranged from the end on the main mounting side to the end on the opposite side of the main mounting side.

(4) The glass diaphragm according to (2) or (3), wherein the core layer is made of resin.
With this glass diaphragm, the core layer made of resin enhances the vibration damping efficiency in the extended portion.

(5) The glass diaphragm according to any one of (2) to (4), wherein the covering portion has at least one of metal and hard plastic.
With this glass diaphragm, the strength of the extension is increased by the covering portion having at least one of metal and hard plastic, and the support strength of the main mounting portion to the holder is increased.

(6) The extension is plate-shaped,
The core layer has a first main surface and a second main surface,
The glass diaphragm according to any one of (2) to (5), wherein the covering portion has a first covering portion arranged on the first main surface side.
According to this glass diaphragm, a plate-shaped extension portion with a first covering portion arranged on the first main surface of the core layer ensures high support strength to the holder of the main mount portion while providing a good vibration damping effect.

(7) The glass diaphragm according to (6), wherein the covering portion has a second covering portion arranged on the second main surface side.
With this glass diaphragm, the strength of the extension is further increased by the placement of a second covering portion on the second main surface of the core layer. This ensures high support strength of the main mount portion to the holder by the extension while providing a good vibration damping effect.

(8) When the width of the extension in the short-side direction in a plan view of the glass plate structure is W and the thickness corresponding to the normal direction of the first main surface of the glass plate structure is t,
A glass diaphragm as described in any one of (1) to (7), wherein the aspect ratio (W/t) is 0.1 to 50.
This glass diaphragm can bend and deform in response to shear forces, thereby effectively damping vibration energy.

(9) The glass diaphragm according to any one of (1) to (8), wherein the extension portion has at least one bent portion.
With this glass diaphragm, since the extension has a bent portion, the extension can be positioned while easily avoiding interference with surrounding members, etc.

(10) The holder has a connecting portion that is located outside the edge of the glass plate structure in a plan view of the glass plate structure,
The extension is connected to the connecting portion and is a glass diaphragm according to any one of (1) to (9).
With this glass diaphragm, the main mounting portion can be well supported by the extension portion connected to the connecting portion outside the edge of the glass plate structure in the holder.

(11) The extension is positioned at a distance from the glass plate structure,
The glass diaphragm according to any one of (1) to (10), wherein the medium between the glass plate structure and the extension is air.
With this glass diaphragm, the extension is positioned at a distance from the glass plate structure, and since the medium between the glass plate structure and the extension is air, the transmission of vibrations from the extension to the glass plate structure can be suppressed. As a result, vibrations from the transducer can be smoothly transmitted to the glass plate structure, enhancing the acoustic effect.

(12) The glass diaphragm according to any one of (1) to (11), wherein the end of the extension on the main mounting side is mechanically fastened to the main mounting.
This glass diaphragm allows for the addition of an extension to the main mounting section.

(13) The glass diaphragm according to (12), wherein the extension portion is arranged on a projection that protrudes from the main mounting portion in a plan view of the glass plate structure.
This glass diaphragm allows for easy connection by positioning the extension on the protrusion of the main mounting section.

(14) The main mounting portion has a groove on its wall surface,
The extension portion is a glass diaphragm according to (12), wherein the end on the main mounting portion side is positioned inside the groove.
With this glass diaphragm, the end of the extension on the main mount side can be easily connected by inserting it into the groove of the main mount.

(15) A glass diaphragm according to any one of (1) to (11), wherein at least a portion of the extension is formed integrally with the main mounting portion.
This glass diaphragm allows for a simpler connection structure to the main mounting section.

(16) The extension portion is a glass diaphragm according to any one of (1) to (15), wherein the end opposite to the main mounting portion overlaps with the holder in a plan view of the glass plate structure.
In this glass diaphragm, in a plan view of the glass plate structure, the main mounting portion is supported by the holder by an extension that overlaps with the holder at the end opposite to the main mounting portion.

(17) A glass diaphragm according to any one of (1) to (16), comprising a plurality of extensions, each of which is connected to one holder.
With this glass diaphragm, the main mounting section is supported by the holder with high load-bearing force through multiple extensions connected to a single holder.

(18) A glass diaphragm according to any one of (1) to (16), comprising a plurality of extensions and a plurality of holders, wherein the plurality of extensions are connected to the plurality of holders, respectively.
With this glass diaphragm, the main mounting section is supported by the holder with high load-bearing force through multiple extensions connected to multiple holders.

(19) The glass plate structure is a sliding window for a vehicle, as described in any one of (1) to (18).
With this glass diaphragm, a transducer is attached to the mounting part of the glass plate structure, and this glass plate structure is assembled into a vehicle as a sliding window for the vehicle, thereby supplying sound generated from the glass plate structure into the vehicle interior.

(20) A glass diaphragm with a vibrator, comprising a glass diaphragm as described in any one of (1) to (19) and the vibrator connected to the connection portion of the mounting portion.
With this glass diaphragm with a transducer, the glass diaphragm can be transformed into a glass diaphragm with a transducer by fixing a connecting part to a mounting part fixed to a glass plate structure and attaching the transducer to the mounting part.

(21) A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached, a holder fixed to the glass plate structure, and an extension portion connecting the main mounting portion and the holder,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing the extension, which has a core layer and a covering portion that covers the core layer and has higher rigidity than the core layer, between the main mounting portion and the holder without contacting the glass plate structure.
This method for manufacturing a glass diaphragm allows for the production of a glass diaphragm in which the main mount and holder are attached to a glass plate structure, and the main mount is supported by the holder via an extension. Furthermore, after the main mount and holder are attached to the glass plate structure, the extension can be connected and fixed between the main mount and the holder. In other words, the extension can be added later, improving work efficiency.
Furthermore, since the main mounting portion of the manufactured glass diaphragm is connected to the holder by an extension portion, the mounting portion to which the connecting portion fixed to the transducer is attached can be firmly supported to the glass plate structure, thereby preventing the transducer from falling off the glass plate structure.
Furthermore, since the core layer and the extension, which has a covering portion that covers the core layer and has higher rigidity than the core layer, are connected and fixed between the main mount portion and the holder without contacting the glass plate structure, the high strength of the extension portion can be ensured while suppressing the transmission of vibrations from the transducer from the main mount portion of the mount to the holder. As a result, vibrations from the transducer can be smoothly transmitted to the glass plate structure, thereby enhancing the acoustic effect.

(22) A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached and which has a covering portion extending outward in a plate shape integrated thereon, and a holder fixed to the glass plate structure,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing an extension portion, which includes a portion on the main surface of the covering portion having a core layer having lower rigidity than the covering portion, to the holder without contacting the glass plate structure.
According to this method for manufacturing a glass diaphragm, a glass diaphragm can be manufactured in which the main mount portion and the holder are attached to a glass plate structure, and the main mount portion is connected to the holder by an extension portion. Moreover, since the extension portion, which includes a portion in which a core layer is laminated on the main surface of the covering portion that is integrally formed with the main mount portion and extends, is connected to and fixed to the holder, the connection work between the extension portion and the main mount portion can be omitted, improving work efficiency.
Furthermore, since the main mounting portion of the manufactured glass diaphragm is connected to the holder by an extension portion, the mounting portion to which the connecting portion fixed to the transducer is attached can be firmly supported to the glass plate structure, thereby preventing the transducer from falling off the glass plate structure.
Furthermore, since the extension portion, which includes a core layer having lower rigidity than the coating portion laminated on the main surface of the coating portion, is connected to and fixed to the holder without contacting the glass plate structure, high strength of the extension portion can be ensured while suppressing the transmission of vibrations from the transducer from the main mounting portion of the mounting portion to the holder. As a result, vibrations from the transducer can be smoothly transmitted to the glass plate structure, thereby enhancing the acoustic effect.

(23) After the method for manufacturing a glass diaphragm described in (21) or (22),
A method for manufacturing a glass diaphragm with a vibrator, comprising attaching the vibrator to the main mounting portion.
According to this method for manufacturing a glass diaphragm with a transducer, it is possible to manufacture a glass diaphragm with a transducer in which the transducer is stably mounted and in which the deterioration of sound quality emitted from the glass diaphragm and the detachment of the transducer are suppressed.

11 Glass diaphragm 13 Transducer 14 Holder 15 Glass plate structure 15a First main surface 15b Second main surface 16 Holder 17 Mounting part 19 Connecting part 21 Main mounting part 22 Projection part 22a Groove part 23 Extension part 23a One end (end)
23b Other end (end)
23c Bent section 35 Connecting section 51 Core layer 53 First main surface 55 Second main surface 61 Covering section 63 First covering section 65 Second covering section 100 Glass diaphragm with transducer D Shortest distance η Damping coefficient

Claims (23)

Glass plate structure and
A mounting portion fixed to the glass plate structure and to which a vibrator that vibrates the glass plate structure is attached,
The glass plate structure has a holder along its edge that faces the first main surface of the glass plate structure,
The mounting portion includes a main mounting portion which includes a connecting portion to which the transducer is attached, and an extension portion which connects the main mounting portion and the holder.
The extension is a glass diaphragm having a damping coefficient η of 0.01 or more, and at least a portion of it is positioned at a distance from the glass plate structure. The glass diaphragm according to claim 1, wherein the extension comprises a core layer and a covering portion that covers at least a portion of the core layer and has higher rigidity than the core layer. The glass diaphragm according to claim 2, wherein the core layer is arranged continuously from the end on the main mounting side to the end on the opposite side of the main mounting side in a plan view of the glass plate structure. The glass diaphragm according to claim 2 or 3, wherein the core layer is made of resin. The glass diaphragm according to claim 2 or 3 , wherein the covering portion has at least one of metal and hard plastic. The extension is plate-shaped,
The core layer has a first main surface and a second main surface,
The glass diaphragm according to claim 2 or 3 , wherein the covering portion has a first covering portion arranged on the first main surface side. The glass diaphragm according to claim 6, wherein the covering portion has a second covering portion disposed on the second main surface side. When the width of the extension in the shorter direction in a plan view of the glass plate structure is W, and the thickness corresponding to the normal direction of the first main surface of the glass plate structure is t,
A glass diaphragm according to any one of claims 1 to 3 , wherein the aspect ratio (W/t) is 0.1 to 50. The glass diaphragm according to any one of claims 1 to 3 , wherein the extension portion has at least one bent portion. The holder has a connecting portion located outside the edge of the glass plate structure in a plan view of the glass plate structure.
The extension portion is connected to the connecting portion, as described in any one of claims 1 to 3 . The extension is positioned spaced apart from the glass plate structure.
The glass diaphragm according to any one of claims 1 to 3 , wherein the medium between the glass plate structure and the extension is air. The glass diaphragm according to any one of claims 1 to 3 , wherein the end of the extension on the main mounting side is mechanically fastened to the main mounting. The glass diaphragm according to claim 12, wherein the extension portion is positioned on a projection that protrudes from the main mounting portion in a plan view of the glass plate structure. The main mounting portion has grooves on its wall surface,
The glass diaphragm according to claim 12, wherein the end of the extension portion on the main mounting portion side is positioned inside the groove portion. The glass diaphragm according to any one of claims 1 to 3 , wherein at least a portion of the extension is formed integrally with the main mounting portion. The glass diaphragm according to any one of claims 1 to 3 , wherein the end of the extension opposite to the main mounting portion overlaps with the holder in a plan view of the glass plate structure. A glass diaphragm according to any one of claims 1 to 3 , comprising a plurality of extensions, each of which is connected to one holder. A glass diaphragm according to any one of claims 1 to 3 , comprising a plurality of extensions and a plurality of holders, wherein the plurality of extensions are connected to the plurality of holders, respectively. The glass plate structure is a sliding window for a vehicle, according to any one of claims 1 to 3 . A glass diaphragm with a vibrator, comprising a glass diaphragm according to any one of claims 1 to 3 and the vibrator connected to the connecting portion of the mounting portion. A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached, a holder fixed to the glass plate structure, and an extension portion connecting the main mounting portion and the holder,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing the extension, which has a core layer and a covering portion that covers the core layer and has higher rigidity than the core layer, between the main mounting portion and the holder without contacting the glass plate structure. A method for manufacturing a glass diaphragm, comprising a glass plate structure, a main mounting portion to which a vibrator for vibrating the glass plate structure is attached and which has an integrated covering portion extending outward in a plate shape, and a holder fixed to the glass plate structure,
The main mounting portion and the holder are attached to the glass plate structure.
A method for manufacturing a glass diaphragm, comprising connecting and fixing an extension portion, which includes a portion on the main surface of the covering portion having a core layer having lower rigidity than the covering portion, to the holder without contacting the glass plate structure. After the method for manufacturing a glass diaphragm according to claim 21 or 22,
A method for manufacturing a glass diaphragm with a vibrator, comprising attaching the vibrator to the main mounting portion.