WO2024024599A1

WO2024024599A1 - Glass vibration plate and vibrator-equipped glass vibration plate

Info

Publication number: WO2024024599A1
Application number: PCT/JP2023/026481
Authority: WO
Inventors: 研人櫻井; 順秋山
Original assignee: Ａｇｃ株式会社
Priority date: 2022-07-29
Filing date: 2023-07-19
Publication date: 2024-02-01

Abstract

A glass vibration plate (10) comprises: a glass plate constituent (12); a mount (14) fixed to the main surface on one side of the glass plate constituent (12); and a connection part (16) which is provided on a side of the mount (14) opposite to the glass plate constituent (12) side and to which a vibrator (24) for vibrating the glass plate constituent (12) is attached. The mount (14) and the connection part (16) are provided with non-overlapped parts (32, 36) not overlapping the vibrator (24) in the plate thickness direction of the glass plate constituent (12), and are fixed to each other by the non-overlapped parts (32, 36).

Description

Glass diaphragm and glass diaphragm with vibrator

The present disclosure relates to a glass diaphragm and a glass diaphragm with a vibrator.

In recent years, technology has been studied that allows a glass plate to function as a speaker by vibrating it. International Publication No. 2021/229179 discloses a structure in which a sole and a base are fixed on a glass plate by molding, and a vibrator (exciter) is attached to the base via a connection part. International Publication No. 2021/229180 discloses a structure in which a through hole is formed in a glass plate, a lower part of a base is inserted into the through hole, and a vibrator is attached to the upper part of the base.

However, in the structures disclosed in Patent Document 1 and Patent Document 2, the structure for fixing the vibrator (exciter) to the glass plate structure is complicated, so that variations occur in the fixing state of the vibrator, resulting in a desired result. There was a problem with individual differences in acoustic performance.

An object of the present disclosure is to obtain a glass diaphragm and a glass diaphragm with a vibrator that can easily attach a vibrator and achieve desired acoustic performance with little individual difference.

The glass diaphragm according to the present disclosure includes a glass plate structure, a mount part fixed to one main surface of the glass plate structure, and a side of the mount part opposite to the glass plate structure side. and a connecting part to which a vibrator for vibrating the glass plate structure is attached, wherein the mount part and the connecting part are non-overlapping parts that do not overlap with the vibrator in the thickness direction of the glass plate structure. and are fixed to each other at the non-overlapping portion.

In the glass diaphragm and the glass diaphragm with a vibrator according to the present disclosure, a vibrator can be easily attached, and desired acoustic performance can be achieved with little individual difference.

FIG. 2 is a cross-sectional view of the glass diaphragm with a vibrator according to the first embodiment, viewed from the side. FIG. 3 is a plan cross-sectional view of the mount section according to the first embodiment. FIG. 1 is a plan view of a glass diaphragm with a vibrator according to a first embodiment. It is a top view of the structure which fixes the glass diaphragm with a clip in 1st Embodiment. FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to Modification 1, viewed from the side. FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to Modification Example 2, viewed from the side. FIG. 7 is a perspective view of a mount section according to Modification 3. FIG. 7 is a perspective view of a connecting portion according to modification example 3; FIG. 7 is a perspective view of a mount section according to modification example 4; FIG. 7 is a perspective view of a connecting portion according to modification example 4; FIG. 7 is a perspective view of a mount section according to modification 5. FIG. 7 is a perspective view of a connecting portion according to modification 5; FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to a second embodiment, viewed from the side. It is a perspective view of the mount part in 2nd Embodiment. FIG. 7 is a perspective view of a mount section and a connection section in Modification 6. FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to modification 6, viewed from the side. FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to Modification Example 7, viewed from the side. FIG. 7 is a cross-sectional view of a glass diaphragm with a vibrator according to Modification Example 8, viewed from the side.

<First embodiment>
A glass diaphragm with a vibrator 10 according to a first embodiment will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of the glass diaphragm 10 with a vibrator viewed from the side. As shown in FIG. 1, the glass diaphragm 10 with a vibrator of this embodiment includes a glass diaphragm 11 and a vibrator 24. Further, the glass diaphragm 11 includes a glass plate structure 12. As an example, the glass plate structure 12 of this embodiment may be made of a single glass plate, but from the viewpoint of improving the acoustic effect of the glass diaphragm 10, it is preferably made of laminated glass.

(Glass plate structure 12)
In this embodiment, the glass plate structure 12 is made of transparent or translucent inorganic glass. Note that the present invention is not limited to this, and the glass plate structure 12 may be formed of organic glass. Examples of organic glass include PMMA (polymethyl methacrylate) resin, PC (polycarbonate) resin, PS (polystyrene) resin, PET (polyethyleneterephthalate) resin, PVC (polyvinyl chloride) resin, cellulose resin, etc. .

Further, when the glass plate structure 12 is composed of a laminated glass including a plurality of glass plates, a structure in which an intermediate layer is sandwiched between a pair of glass plates can be mentioned, but a structure having three or more glass plates is also possible. . The thickness of the laminated glass is preferably 1.0 [mm] or more, more preferably 2.0 [mm] or more, and even more preferably 3.0 [mm] or more. This allows the laminated glass to have sufficient strength. Moreover, the thickness of each glass plate constituting the laminated glass is preferably 5.0 [mm] or less, more preferably 3.0 [mm] or less, and even more preferably 2.0 [mm] or less. Furthermore, the thickness of each glass plate constituting the laminated glass is preferably 0.1 [mm] or more, more preferably 0.5 [mm] or more, and even more preferably 1.0 [mm] or more. Note that the thickness of the pair of glass plates may be the same or different.

The intermediate layer that makes up the laminated glass is made of transparent polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), silicone (PDMS), polyurethane, fluorine, polyethylene terephthalate, or polycarbonate. It is formed from a resin film such as. Further, a material that improves sound insulation, a material that absorbs ultraviolet rays and infrared rays, etc. may be added to the intermediate layer. Furthermore, the intermediate layer is not limited to the above resin film, but may also include a gel layer, an adhesive layer, a liquid layer, a sol layer, a grease layer, and the like. For example, when using the above resin film, the thickness of the intermediate layer may be set at 1 [nm] or more and 1.0 [mm] or less, and 0.1 [μm] or more and 0.9 [mm]. It may be set as below, or it may be set as 1 [μm] or more and 0.8 [mm] or less. In addition, between the pair of glass plates, there are dimming functions such as EC (Electrochromic) method, PDLC (Polymer Dispersed Liquid Crystal) method, GHLC (Guest-Host Liquid Crystal) method, SPD (Suspended Particle Device) method, and gaschromic method. A film material having the following properties may be interposed. Further, an identification function indicating that the mount is fastened may be displayed in conjunction with the film.

(Mount part 14)
A mount portion 14 is fixed to one main surface of the glass plate structure 12 via a resin layer 18 . In addition, in the following description, for convenience, the direction from the glass plate structure 12 toward the mount part 14 side is called upward, and the opposite direction is called downward. However, the up-down direction here may be a direction different from the up-down direction in a state where the glass diaphragm 10 is assembled to a frame or the like.

The resin layer 18 has the same outer diameter as the mount part 14 and is provided over the entire lower surface of the mount part 14. As the resin layer 18, an adhesive, a pressure-sensitive adhesive, or the like can be used as appropriate. As the adhesive, a sheet-shaped adhesive tape can be used.

The resin layer 18 of this embodiment may include, for example, an acrylic resin adhesive, but is not limited thereto.

FIG. 2 is a cross-sectional plan view of the mount portion 14 according to the first embodiment. As shown in FIG. 2, the mount portion 14 includes a base portion 30 and a first non-overlapping portion 32 extending from the base portion 30 in the thickness direction of the glass plate structure 12. . The base portion 30 is formed into a substantially circular shape in a plan view of the glass plate structure 12, and vibrates in an area that overlaps with the vibrator 24 attached to the mount portion 14 in the thickness direction of the glass plate structure 12. Also called child overlap part. In addition, the base part 30 of this embodiment may be formed of metal containing stainless steel, aluminum, titanium, etc., and a part of the base part 30 may be formed of resin, such as plastic. As the plastic, general engineering plastics such as ABS series, PVC series, PC series, PP series, PBT series, PA66 series and PPS series may be used, and fiber reinforced plastics including glass fiber and carbon fiber, etc. Can be used.

The thinner the base part 30 is, the more preferable it can be made low in height, preferably 50 [mm] or less, more preferably 30 [mm] or less, even more preferably 20 [mm] or less, particularly 10 [mm] or less. preferable. Note that the base portion 30 may be formed in a shape other than a circle in plan view, and may be formed in a rectangular or polygonal shape, for example.

The first non-overlapping portion 32 extends in the radial direction from the outer peripheral end of the base portion 30 whose outer edge is formed into a substantially circular shape in FIG. is provided. The two first non-overlapping parts 32 are provided at separate positions and are arranged at equal intervals along the outer circumferential direction of the mount part 14. In the present embodiment, the two first non-overlapping parts 32 are arranged at 180 degrees along the outer circumferential direction (at equal intervals) with respect to the center of gravity of the mount part 14. may be arranged at uneven intervals.

The first non-overlapping portion 32 of this embodiment has the same thickness as the base portion 30 and is formed on a plane parallel to both main surfaces of the base portion 30, and each of the first non-overlapping portions 32 has a hole. 32A is provided. The hole 32A is formed up to the vicinity of the lower surface of the mount part 14, and can be an example of a screw hole that can be particularly stably mounted, and a bolt 20 serving as a fastener and a fixing member is screwed into the hole 32A. Although the first non-overlapping portion 32 in this embodiment is made of metal, a portion thereof may be made of resin such as plastic. For example, in the first non-overlapping part, at least the periphery of the hole 32A that contacts the fastener is formed of metal such as stainless steel by inserting a helisert, and the part other than the part that contacts the fastener is made of soft metal such as aluminum or resin such as plastic. may be formed. Note that the hole 32A is not limited to a screw hole, but may also be a wedge-shaped hole including a portion whose diameter gradually decreases in the depth direction, or a space that protrudes from the inner wall in the depth direction to accommodate a key-shaped fastener. However, the hole may have a shape that allows the fastener to be inserted, rotated, and fixed.

(Connection part 16)
As shown in FIG. 1, a connecting portion 16 is provided on the opposite side of the mount portion 14 from the glass plate structure 12 side. In this embodiment, the glass plate structure 12 is arranged on the lower surface side of the mount section 14, and the connection section 16 is arranged on the upper surface side of the mount section 14.

A vibrator 24 that vibrates the glass plate structure 12 is attached to the connecting portion 16. The connecting portion 16 of this embodiment may constitute an outer shell of the vibrator 24, for example. For example, the vibrator 24 may be assembled with its lower surface open, and the open lower surface may be closed by the connecting portion 16. That is, a portion of the connecting portion 16 may be configured as a lid portion that closes a portion of the vibrator 24. Note that the vibrator 24 may be attached to the connection portion 16 mechanically with bolts or the like, or may be attached to the connection portion 16 with an adhesive or the like.

The vibrator 24 is connected to a power source (not shown), and vibrates the glass plate structure 12 according to an input electric signal. The vibrator 24 of this embodiment is, for example, a voice coil motor including a coil part and a magnetic circuit, one of which is fixed to the mount part 14, and the other is fixed to the mount part 14. are arranged so that they can be moved relative to each other. Then, when a current flows through the coil portion, vibration is generated due to the interaction between the coil portion and the magnetic circuit, and the glass plate structure 12 is vibrated via the mount portion 14. Note that the vibrator 24 is not limited to a voice coil motor, and any actuator other than the voice coil motor, such as a piezo type actuator, can be used as long as it is capable of transmitting desired vibrations to the glass plate structure 12.

FIG. 3 is a plan view of the vibrator-equipped glass diaphragm 10 according to the first embodiment. As shown in FIG. 3, the connecting portion 16 includes a vibrator overlapping portion 34 and a second non-overlapping portion 36 extending from the vibrator overlapping portion 34 in a plan view of the glass plate structure 12. has been done. The vibrator overlapping portion 34 is formed into a substantially circular shape in a plan view, and overlaps with the vibrator 24 in the thickness direction of the glass plate structure 12. Therefore, in FIG. 3, the vibrator overlapping portion 34 is hidden behind the lower surface of the vibrator 24.

The thickness of the vibrator overlapping portion 34 is preferably thinner, preferably 50 [mm] or less, more preferably 30 [mm] or less, even more preferably 20 [mm] or less, particularly preferably 10 [mm] or less, and 5 [mm] or less. mm] or less is most preferable. Note that the outer edge of the vibrator overlapping portion 34 in plan view may be other than circular. For example, the vibrator overlapping portion 34 may be formed in a rectangular shape or a polygonal shape in plan view. Further, in the present embodiment, when the glass plate structure 12 is viewed from above, it is preferable that the vibrator overlapping portion 34 is formed in the same shape as the base portion 30 of the mount portion 14 because vibrations can be efficiently transmitted. . However, these are not limited to the same shape (outer edge shape) in a plan view of the glass plate structure 12, and the vibrator overlapping portion 34 and the base portion 30 may have different shapes.

The second non-overlapping portion 36 extends in the radial direction from the outer peripheral end of the vibrator overlapping portion 34 whose outer edge is formed into a substantially circular shape in FIG. A section 36 is provided. The two second non-overlapping parts 36 are provided at separate positions and are arranged at equal intervals along the outer circumferential direction of the connecting part 16. In this embodiment, the two second non-overlapping parts 36 are arranged at positions 180 degrees along the outer circumferential direction with respect to the center of gravity of the connecting part 16. Further, in this embodiment, the second non-overlapping portion 36 is formed in the same shape as the first non-overlapping portion 32 of the mount portion 14 .

The second non-overlapping portion 36 of this embodiment is formed to have the same thickness as the vibrator overlapping portion 34, and each second non-overlapping portion 36 is provided with a through hole 36A that penetrates in the plate thickness direction. There is. The through hole 36A has a size that allows the bolt 20 to be inserted therethrough, and is formed at a position corresponding to the hole 32A of the first non-overlapping portion 32.

As shown in FIG. 1, the surfaces of the mount portion 14 and the connection portion 16 that face each other are flat, but the surfaces that face each other may be formed in an uneven shape as in a modification described below. Furthermore, in the present embodiment, the mount portion 14 and the connecting portion 16 can transmit vibration more efficiently as the surface roughness of the surfaces facing each other is smaller. μm] or less, preferably 10 [μm] or less, even more preferably 6.3 [μm] or less. Furthermore, the base portion 30 and the vibrator overlapping portion 34 are in contact with each other in a plane, and by contacting with no gap between them, the vibration transmission efficiency can be increased. Note that the base portion 30 and the vibrator overlapping portion 34 may be in direct surface contact with each other, and another member may fill the gap between the base portion 30 and the vibrator overlapping portion 34. It may be pinched. Other members include resin sheets, magnetic sheets, and the like. When a magnetic sheet is sandwiched between the base portion 30 and the vibrator overlapping portion 34, the magnetic force of the magnetic sheet assists in positioning and mounting strength of the vibrator 24. In particular, if the base portion 30 and the vibrator overlapping portion 34 have a structure in which they are in contact with each other without using an adhesive, the vibrator 24 (and the connecting portion 16) can be easily replaced.

Next, a method for attaching the connecting portion 16 will be explained. When attaching the connecting portion 16 to the mount portion 14 , first, the second non-overlapping portion 36 of the connecting portion 16 is superimposed on the upper surface of the first non-overlapping portion 32 of the mount portion 14 . After that, the positions of the hole 32A of the first non-overlapping part 32 and the through hole 36A of the second non-overlapping part 36 are aligned, and the bolt 20 is inserted into the through hole 36A and screwed into the hole 32A, especially the screw hole 32A. By doing so, the connecting portion 16 is attached to the mount portion 14. In this way, the mount portion 14 and the connecting portion 16 are fixed to each other at the first non-overlapping portion 32 and the second non-overlapping portion 36 that do not overlap with the vibrator 24 in the thickness direction of the glass plate structure 12.

Note that in this embodiment, the bolt 20, which is an example of a fastener, is used as the fixing member for fastening the mount portion 14 and the connecting portion 16, but the present invention is not limited to this. In addition to the bolts 20, the mount portion 14 and the connecting portion 16 may be mechanically fastened using at least one of a screw, a pin, a rivet, and a clip. As the rivet, metal rivets such as blind rivets, resin rivets, etc. can be used. Further, the clip is not limited to a clip that is fixed from one side like a fastener clip, but a clip that is fixed by sandwiching it from both sides of the mount portion 14 and the connecting portion 16 can be used. Further, bolts, screws, etc. and adhesive may be used in combination for fixing. Furthermore, at least one of the mount part 14 and the connection part 16 may be provided with a claw part, and the mount part 14 and the connection part 16 may be fixed by being locked by the claw part.

FIG. 4 is a plan view of a structure in which a glass diaphragm is fixed with a clip. As shown in FIG. 4 , one second non-overlapping portion 36 extends outside the glass plate structure 12 . In this state, the second non-overlapping portion 36 and the first non-overlapping portion 32 overlaid on the second non-overlapping portion 36 may be held and fixed with clips or rivets.

Furthermore, the mount portion 14 and the connection portion 16 may include a structure in which they are fixed on the side surface of the mount portion 14. For example, as a modification of the glass diaphragm 11 shown in FIG. The first non-overlapping portion 32 and the second non-overlapping portion 36 may be fixed with bolts 20 or the like from the side direction. In this case, a hole may be formed in the side surface of the mount portion 14, and a through hole may be formed in the second non-overlapping portion 36 at a position on the side surface corresponding to the hole, and may be fixed by the above-mentioned fastener.

The glass diaphragm 11 according to the present embodiment is configured as described above, and the first non-overlapping portion 32 of the mount portion 14 and the second non-overlapping portion 36 of the connecting portion 16 are fixed with a fixing member such as a bolt 20. be done. In this way, the mount part 14 and the connecting part 16 are in contact with each other without using an adhesive layer, and the structure for fixing the vibrator 24 to the glass plate structure 12 is simple, so there is no variation in the fixing state of the vibrator 24. is less likely to occur, and the desired acoustic performance can be obtained.

Furthermore, since the base portion 30 of the mount portion 14 is in surface contact with the vibrator overlapping portion 34 of the connecting portion 16 without any gap, vibrations generated from the vibrator 24 can be efficiently transmitted to the glass plate structure 12.

Note that in FIG. 1, the glass plate structure 12 has a flat plate shape, but it may have a curved shape. For example, when the glass plate structure 12 is used for a vehicle windshield, rear glass, side glass, etc., the main surface of the glass plate structure 12 may be curved at the position where the mount portion 14 is attached.

(Modification 1)
FIG. 5 is a cross-sectional view of the vibrator-equipped glass diaphragm 10 according to Modification Example 1, viewed from the side. As shown in FIG. 5, in this modification, no hole is formed in the first non-overlapping portion 32 of the mount portion 14. As shown in FIG. Further, a through hole is not formed in the second non-overlapping portion 36 of the connecting portion 16, and the first non-overlapping portion 32 of the mount portion 14 and the second non-overlapping portion 36 of the connecting portion 16 are bonded by the adhesive 38. Fixed. In other words, in Modification 1, at least part of the first non-overlapping portion 32 and the second non-overlapping portion 36 has an adhesive layer, but the area excluding the first non-overlapping portion 32 and the second non-overlapping portion 36 The mount portion 14 and the connecting portion 16 are in contact with each other without using an adhesive layer.

The adhesive 38 may be formed including at least one of an epoxy resin, an acrylic resin, a urethane resin, a silicone resin, an epoxy silicone resin, a cyanoacrylate resin, and a dimethacrylate resin. The adhesive 38 may be a chemically reactive adhesive such as a thermosetting adhesive, a moisture curable adhesive, a two-component mixture curable adhesive, an ultraviolet curable adhesive, a visible light curable adhesive, or an anaerobic curable adhesive, or a thermally fused adhesive such as a hot melt adhesive. Mold adhesives, combined reactive adhesives such as ultraviolet/heat curing types, ultraviolet/moisture curing types, ultraviolet/anaerobic curing types, hot melt/moisture curing types, adhesive/UV curing types, etc. can be used. As a method for curing the adhesive material 38, moisture curing, anaerobic curing, thermal curing, two-component mixture curing, and pressure curing using an instant adhesive may be used. Further, it is preferable that the adhesive material 38 is a material having properties such as electrically removable properties and ultrasonic releasable properties, since the mount part 14 and the connecting part 16 can be easily disassembled and reused.

The adhesive 38 may be provided, for example, in at least a partial area or the entire area of the upper surface of the first non-overlapping portion 32, and the first non-overlapping portion 32 and the second non-overlapping portion 36 may be connected to each other via the adhesive 38. It is best to fix it with adhesive.

In this way, in this modification, the mount part 14 and the connecting part 16 can be fixed without forming holes, through holes, etc. and mechanically fastening them.

(Modification 2)
FIG. 6 is a cross-sectional view of the vibrator-equipped glass diaphragm 10 according to Modification Example 2, viewed from the side. As shown in FIG. 6, in this modification, the connecting portion 16 is formed thicker than the mount portion 14. As shown in FIG.

The mount portion 14 includes a base portion 30 and a first non-overlapping portion 32, and the base portion 30 and the first non-overlapping portion 32 are formed to have the same thickness. The connecting portion 16 includes a transducer overlapping portion 34 and a second non-overlapping portion 36, and the transducer overlapping portion 34 and the second non-overlapping portion 36 are formed to have the same thickness.

Here, in this modification, the first non-overlapping portion 32 is formed thinner than in the first embodiment, so the depth of the hole portion 32A including the screw hole etc. is shallower than in the first embodiment. Furthermore, since the second non-overlapping portion 36 is formed thicker than in the first embodiment, the depth of the through hole 36A is deeper than in the first embodiment.

(Modification 3)
FIG. 7 is a perspective view of the mount section 14 according to Modification Example 3. Moreover, FIG. 8 is a perspective view of the connection part 16 according to the third modification. As shown in FIG. 7, in this modification, the first non-overlapping portion 32 of the mount portion 14 includes an outer circumferential portion 33 that is continuously formed along the outer circumferential direction of the mount portion 14. As shown in FIG.

The outer circumferential portion 33 is formed in an annular shape having an outer edge on the outer side of the base portion 30 that overlaps with the vibrator 24 in the thickness direction of the glass plate structure 12. Although the outer circumferential portion 33 of this modification is formed in a substantially annular shape with a circular outer edge in plan view, the outer edge may be formed in a polygonal shape. Further, the outer peripheral portion 33 may have the same width or different widths when the glass diaphragm 11 is viewed from above. Further, the outer circumferential portion 33 may have a discontinuous portion having one or more notches, and may be formed into a substantially C-shape in a plan view, for example.

A hole 32A is formed in the outer peripheral portion 33, and an example of the hole 32A is a screw hole into which the bolt 20 is screwed. Two holes 32A are arranged at 180 degree positions (equally spaced) along the outer circumferential direction with respect to the center of gravity of the mount section 14, but the hole section 32A is not limited thereto. For example, three holes 32A may be formed at positions every 120 degrees (equally spaced) along the outer circumferential direction with respect to the center of gravity of the mount portion 14.

In FIG. 7, the base portion 30 of the mount portion 14 is formed thicker than the first non-overlapping portion 32, and a step is formed between the general portion 30A of the base portion 30 and the first non-overlapping portion 32. There is. Furthermore, a guide groove 30B serving as a guide portion is formed in the base portion 30.

The guide groove 30B is formed in the center of the base portion 30, and has a substantially rectangular shape with a pair of opposing sides curved outward in plan view. Further, the guide groove 30B is formed to be recessed with respect to the general portion 30A of the base portion 30.

As shown in FIG. 8, the second non-overlapping portion 36 of the connecting portion 16 includes a continuous portion 37 that is continuously formed along the outer circumferential direction of the connecting portion 16. The continuous portion 37 is formed into an annular shape having an outer edge outside the vibrator overlapping portion 34 . Although the continuous portion 37 of this modification is formed in a substantially annular shape with a circular outer edge in a plan view like the outer peripheral portion 33 of the mount portion 14, it may be formed in other shapes. A through hole 36A is formed in the continuous portion 37 at a position corresponding to the hole 32A of the mount portion 14.

The vibrator overlapping portion 34 of the connecting portion 16 is formed with a protrusion 34A as a guide portion. The vibrator overlapping portion 34 has a groove inside the second non-overlapping portion 36, and a step is formed between the vibrator overlapping portion 34 and the second non-overlapping portion 36. The protruding portion 34A is formed at the center of the vibrator overlapping portion 34 so as to protrude from the groove, and the height of the protruding portion 34A is the same as that of the second non-overlapping portion 36.

In this modification, when placing the connecting part 16 on the mount part 14, the protruding part 34A of the connecting part 16 is engaged with the guide groove 30B of the mount part 14, so that the mount part 14 and the connecting part 16 are connected to each other. is positioned. In the positioned state, the through hole 36A and the hole 32A, such as a screw hole, communicate with each other in the thickness direction, so that it can be easily fixed with the bolt 20. Note that the combination of the mount section 14 and the connection section 16 may be such that the structure of FIG. 8 is adopted for the mount section 14 and the structure of FIG. 7 is adopted for the connection section 16.

(Modification 4)
FIG. 9 is a perspective view of the mount portion 14 according to Modification 4. FIG. Moreover, FIG. 10 is a perspective view of the connection part 16 according to the fourth modification. As shown in FIG. 9, this modification includes an outer peripheral part 33 similar to Modification 3, and a hole 32A such as a screw hole into which the bolt 20 is screwed is formed in the outer peripheral part 33. There is. The hole portion 32A is arranged at a position of 180 degrees along the outer circumferential direction with respect to the center of gravity of the mount portion 14.

The base portion 30 of the mount portion 14 is formed to be flush with the first non-overlapping portion 32. Furthermore, a guide pin 30C as a guide portion is formed on the base portion 30. Two guide pins 30C are formed, each having a cylindrical shape with the same diameter and height, but they may be formed in other shapes or in mutually different shapes.

As shown in FIG. 10, the second non-overlapping portion 36 of the connecting portion 16 includes a continuous portion 37 similar to that of the third modification, and the continuous portion 37 has a hole 32A of the mount portion 14. A through hole 36A is formed at the position.

A guide groove 34B serving as a guide portion is formed in the vibrator overlapping portion 34 of the connecting portion 16. The guide groove 34B is formed at a position corresponding to the guide pin 30C, and only needs to be formed to have a diameter slightly larger than the diameter of the guide pin 30C so that it can be inserted.

In this modification, when placing the connection part 16 on the mount part 14, the guide groove 34B of the connection part 16 is engaged with the guide pin 30C of the mount part 14, so that the mount part 14 and the connection part 16 are connected to each other. is positioned. In the positioned state, the through hole 36A and the hole 32A communicate with each other in the thickness direction, so that they can be easily fixed with the bolts 20. Note that the combination of the mount section 14 and the connection section 16 may be such that the structure of FIG. 10 is adopted for the mount section 14 and the structure of FIG. 9 is adopted for the connection section 16.

(Modification 5)
FIG. 11 is a perspective view of the mount section 14 according to modification 5. Moreover, FIG. 12 is a perspective view of the connection part 16 according to the fifth modification. As shown in FIG. 11, this modification includes an outer peripheral part 33 similar to Modifications 3 and 4, and the outer peripheral part 33 includes a hole 32A such as a screw hole into which the bolt 20 is screwed. is formed. Two hole portions 32A are arranged at positions (intervals) of 180 degrees along the outer circumferential direction with respect to the center of gravity of the mount portion 14.

Since the base portion 30 of the mount portion 14 has a convex inner side of the first non-overlapping portion 32, a step is formed between the base portion 30 and the first non-overlapping portion 32. Further, the base portion 30 is formed with a guide protrusion 30D as a guide portion. The guide projection 30D projects radially outward from the peripheral end of the base portion 30. In FIG. 11, one guide projection 30D is provided from the peripheral end, but two or more guide projections 30D may be provided spaced apart from the peripheral end.

As shown in FIG. 12, the second non-overlapping portion 36 of the connecting portion 16 includes a continuous portion 37 similar to Modifications 3 and 4, and the continuous portion 37 includes a hole in the mount portion 14. A through hole 36A is formed at a position corresponding to 32A. In this modification, the base part 30 has a configuration in which the inside of the first non-overlapping part 32 is convex and a step is formed, but the outer edge of the convex shape overlaps with the first non-overlapping part 32. It's okay. That is, the mount portion 14 may have a convex portion (outer peripheral portion) located in the first non-overlapping portion 32 as long as the hole portion 32A can be secured.

Further, as shown in FIG. 12, an annular projection 34C is formed in the vibrator overlapping portion 34 of the connecting portion 16. A notch 34D is formed in the annular projection 34C, and the guide projection 30D can be engaged with the notch 34D. In this modification, the annular protrusion 34C is arranged in the vibrator overlapping part 34, but a part or all of the annular protrusion 34C may overlap with the second non-overlapping part 36. That is, in the connecting portion 16, at least a portion of the annular projection 34C may be located in the second non-overlapping portion 36 as long as the through hole 36A can be secured.

In this modification, when placing the connection part 16 on the mount part 14, the notch part 34D of the connection part 16 is engaged with the guide protrusion 30D of the mount part 14, so that the mount part 14 and the connection part 16 and are positioned. In the positioned state, the through hole 36A and the hole 32A communicate with each other in the thickness direction, so that they can be easily fixed with the bolts 20. Note that the combination of the mount portion 14 and the connection portion 16 may be such that the structure of FIG. 12 is adopted for the mount portion 14 and the structure of FIG. 11 is adopted for the connection portion 16.

<Second embodiment>
A glass diaphragm with a vibrator 50 according to a second embodiment will be described with reference to FIGS. 13 and 14. Note that the same components as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 13 is a cross-sectional view of the vibrator-equipped glass diaphragm 10 viewed from the side, and FIG. 14 is a perspective view of the connecting portion 52. Here, FIG. 13 is a diagram showing a state cut along a line passing through the two second non-overlapping portions 58 in FIG. 14. As shown in FIG. 13, a glass diaphragm with a vibrator 50 of this embodiment includes a glass diaphragm 51 and a vibrator 24. Further, the glass diaphragm 51 includes a glass plate structure 12.

A mount portion 14 is fixed to one main surface of the glass plate structure 12 via a resin layer 18. The mount portion 14 includes a base portion 30 and a first non-overlapping portion 32, and the base portion 30 and the first non-overlapping portion 32 are formed to have the same thickness. A connecting portion 52 is provided on the opposite side of the mount portion 14 from the glass plate structure 12 side. The connecting portion 52 includes a vibrator overlapping portion 56 and a second non-overlapping portion 58 extending from the vibrator overlapping portion 56 in a plan view of the glass plate structure 12 . Furthermore, the connecting portion 52 has a portion in which the second non-overlapping portion 58 is formed thicker than the vibrator overlapping portion 56 that overlaps with the vibrator 24 in the thickness direction of the glass plate structure 12 .

In the example shown in FIG. 14, the three second non-overlapping parts 58 spaced apart from each other are arranged at equal intervals along the outer circumferential direction with respect to the center of gravity of the connecting part 52. The proximal end side is formed to have the same thickness as the vibrator overlapping portion 56. Further, a thick wall portion 58A that is thicker than the vibrator overlapping portion 56 is formed on the tip side of the second non-overlapping portion 58, and a through hole 58B that penetrates in the plate thickness direction is formed in the thick wall portion 58A. is formed.

The glass diaphragm 51 according to the present embodiment is configured as described above, and since the second non-overlapping portion 58 of the connecting portion 52 is formed thicker than the vibrator overlapping portion 56, the glass diaphragm 51 is configured as described above. While reducing the height of the plate 51, the fixing strength between the mound part 14 and the connecting part 52 can be increased by the fixing member such as the bolt 20.

(Modification 6)
FIG. 15 is a perspective view of a mount section and a connecting section in Modification Example 6, and FIG. 16 is a cross-sectional view of a glass diaphragm with a vibrator 50 according to Modification Example 6, viewed from the side. Here, FIG. 16 is a diagram showing a state cut along a line passing through the two first non-overlapping portions 64 in FIG. 15. As shown in FIG. 16, a mount portion 60 is fixed to one main surface of the glass plate structure 12 via a resin layer 18. The mount section 60 includes a base section 62 and a first non-overlapping section 64.

As shown in FIG. 15, the base portion 62 includes a substantially circular portion centered on the center of gravity in a plan view of the glass plate structure 12, and a portion that extends radially outward from the outer edge of the substantially circular shape and is spaced from each other. It has three arm parts 63. Further, a first non-overlapping portion 64 is formed at the tip of the arm portion 63, and the first non-overlapping portion 64 is formed thicker than the base portion 62. Furthermore, each of the three first non-overlapping parts 32 is provided with a hole 64A.

As shown in FIG. 16, a connecting portion 66 is provided on the opposite side of the mount portion 60 to the glass plate structure 12 side. The connecting portion 66 includes a vibrator overlapping portion 68 and a second non-overlapping portion 70 extending from the vibrator overlapping portion 68 in a plan view of the glass plate structure 12 . Further, as shown in FIG. 15, in the connecting portion 66, a vibrator overlapping portion 68 that overlaps with the vibrator 24 in the thickness direction of the glass plate structure 12 is formed to be thicker than the second non-overlapping portion 70. The vibrator 24 is attached to the entire area of the substantially circular vibrator overlapping portion 68. Further, a through hole 70A penetrating in the plate thickness direction is formed in the second non-overlapping portion 70.

In this modification, the length of the hole 64A can be ensured while making the base part 62 of the mount part 60 thin, so the height of the glass diaphragm 51 can be reduced, and the fixing strength between the mount part 60 and the connection part 66 can be increased. can be enhanced.

Furthermore, in the second embodiment, the first non-overlapping portions 32 and the second non-overlapping portions 58, 70 are each arranged in plurality and spaced apart from each other in a plan view of the glass plate structure 12. , but not limited to this. For example, as in the first embodiment, the first non-overlapping portion 32 and the second non-overlapping portion 58 are formed in an annular shape continuously from the outer periphery of the vibrator overlapping portion in a plan view of the glass plate structure 12. Alternatively, the height of the glass diaphragm 11 may be reduced by forming one of the first non-overlapping portion 32 and the second non-overlapping portion 36 to be thick.

(Modification 7)
FIG. 17 is a cross-sectional view of a vibrator-equipped glass diaphragm 50 according to Modification Example 7, viewed from the side. As shown in FIG. 17, a mount portion 72 is fixed to one main surface of the glass plate structure 12 via a resin layer 18. The mount portion 72 includes a base portion 74 and a first non-overlapping portion 76.

The base portion 74 includes a substantially circular portion of the glass plate structure 12 when viewed from above, and arm portions extending radially outward from the substantially circular outer edge and spaced apart from each other. Further, a first non-overlapping portion 76 is formed at the tip of the arm portion, and the first non-overlapping portion 76 is formed thicker than the base portion 74 . Furthermore, each of the three first non-overlapping parts 76 is provided with a hole 76A.

A connecting portion 78 is provided on the opposite side of the mount portion 72 from the glass plate structure 12 side. The connecting portion 78 is configured to include a vibrator overlapping portion 80 and a second non-overlapping portion 82 extending from the vibrator overlapping portion 80 in a plan view of the glass plate structure 12 .

In the connecting portion 78 of this modification, the vibrator overlapping portion 80 and the second non-overlapping portion 82 are formed to have the same thickness, and the vibrator 24 is attached to the entire area of the substantially circular vibrator overlapping portion 80. Further, the second non-overlapping portion 82 is formed with a through hole 82A that penetrates in the plate thickness direction.

Here, in this modification, the vibrator 24 is arranged in a space surrounded by the vibrator overlapping part 80 of the connecting part 78 and the mount part 72. Further, since the vibrator 24 is covered by the connecting portion 78, the vibrator 24 is not exposed to the outside. In this modification, the structure is such that the vibrator 24 is not exposed to the outside, so the vibrator 24 is not directly touched.

(Modification 8)
FIG. 18 is a cross-sectional view of a vibrator-equipped glass diaphragm 50 according to Modification Example 8, viewed from the side. As shown in FIG. 18, the mount portion 72 includes a base portion 74 and a first non-overlapping portion 76 that is thicker than the base portion 74. As shown in FIG.

A connecting portion 78 is provided on the opposite side of the mount portion 72 from the glass plate structure 12 side. The connecting portion 78 includes a second non-overlapping portion 82 that does not overlap with the vibrator 24 in a plan view of the glass plate structure 12, and the second non-overlapping portion 82 includes a second non-overlapping portion 82 that penetrates in the thickness direction. A through hole 82A is formed.

Here, in this modification, a through hole 78A is formed in the connecting portion 78, and the vibrator 24 is held between the hole walls of the through hole 78A. Therefore, a part of the vibrator 24 is placed in a space surrounded by the connecting part 78 and the mount part 72, and the other part of the vibrator 24 is placed outside the space through the through hole 78A. In this way, in this modification, even if the vibrator 24 is thick, it can be attached.

The glass diaphragms 10 and 50 with vibrators according to the first embodiment, the second embodiment, and the modified example have been described above, but it goes without saying that they can be implemented in various ways without departing from the gist of the present disclosure. It is.
The disclosure of Japanese Patent Application No. 2022-122113 is incorporated herein by reference in its entirety.
All documents, patent applications, and technical standards mentioned herein are incorporated by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference. Incorporated herein by reference.

10, 50 Glass diaphragm with vibrator 11, 51 Glass diaphragm 12 Glass plate structure 14, 52, 60 Mount section 16, 54, 66 Connection section 20 Bolt (fixing member, fastener)
24 Vibrator 32, 64 First non-overlapping part 34, 56, 68 Vibrator overlapping part 36, 58, 70 Second non-overlapping part

Claims

a glass plate structure;
a mount portion fixed to one main surface of the glass plate structure;
a connection part provided on the opposite side of the glass plate structure in the mount part and to which a vibrator for vibrating the glass plate structure is attached;
has
The mount portion and the connection portion include a non-overlapping portion that does not overlap with the vibrator in the thickness direction of the glass plate structure, and are fixed to each other at the non-overlapping portion.
Glass diaphragm.
The glass diaphragm according to claim 1, wherein the mount portion and the connection portion are fixed by a fixing member including at least one of a fastener and an adhesive.
The glass diaphragm according to claim 2, wherein the mount portion and the connection portion are fixed by a plurality of the fixing members.
The glass diaphragm according to claim 3, wherein the mount portion and the connection portion each include a plurality of spaced apart non-overlapping portions.
The glass diaphragm according to claim 4, wherein a plurality of the non-overlapping parts are arranged at equal intervals along the outer circumferential direction of the mount part and the connection part.
At least one of the non-overlapping portion of the mount portion and the non-overlapping portion of the connecting portion includes an outer peripheral portion continuously formed along an outer peripheral direction of the mount portion and the connecting portion,
The glass diaphragm according to claim 2 or 3, wherein the fixing member is fixed at the outer peripheral portion.
The glass diaphragm according to claim 6, wherein the outer peripheral portion is formed in an annular shape having an outer edge outside a vibrator overlapping portion that overlaps with the vibrator in the thickness direction of the glass plate structure.
Claims 4 to 7, wherein the connecting portion has a portion where the non-overlapping portion is thicker than the vibrator overlapping portion that overlaps with the vibrator in the thickness direction of the glass plate structure. The glass diaphragm according to any one of the above.
Claims 4 to 8, wherein the mount portion has a portion where the non-overlapping portion is thicker than the vibrator overlapping portion that overlaps with the vibrator in the thickness direction of the glass plate structure. The glass diaphragm according to any one of the above.
The fixing member includes the fastener,
The glass diaphragm according to any one of claims 2 to 9, wherein at least a portion of the non-overlapping portion that comes into contact with the fastener is metal.
The glass diaphragm according to claim 10, wherein the non-overlapping portion other than the portion in contact with the fastener is made of resin.
The glass diaphragm according to claim 9, wherein the vibrator is arranged in a space surrounded by the connection part and the mount part.
The glass diaphragm according to claim 1, wherein the non-overlapping portion of the mount portion and the non-overlapping portion of the connecting portion have the same shape.
The glass diaphragm according to any one of claims 1 to 13, wherein the mount portion and the connection portion have flat surfaces that face each other.
The glass diaphragm according to any one of claims 1 to 13, wherein at least one of the mount portion and the connection portion includes a guide portion for positioning.
A through hole is formed in the connecting part, a part of the vibrator is placed in a space surrounded by the connecting part and the mount part, and another part of the vibrator is placed through the through hole. The glass diaphragm according to claim 9, which is arranged outside the space.
The glass diaphragm according to any one of claims 1 to 16, wherein the mount portion and the connection portion are in contact with each other without an adhesive layer interposed therebetween, at least in a region excluding the non-overlapping portion.
The glass diaphragm according to any one of claims 1 to 17, wherein the mount portion is fixed to one main surface of the glass plate structure via a resin layer.
The glass diaphragm according to any one of claims 1 to 18, wherein the connecting portion constitutes an outer shell of the vibrator.
The glass diaphragm according to any one of claims 1 to 19,
the vibrator attached to the connection part;
A glass diaphragm with a vibrator.