JP2018170593A - Glass plate structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass plate structure having good acoustic performance.SOLUTION: The glass plate structure includes: a glass plate 12 vibrated by a vibrator; a frame body 14 disposed along edge portions 12A to 12D of the glass plate 12 and having an opening area larger than a surface area of a main face of the glass plate 12; and a sheet-like member 22 connected to the glass plate 12 and the frame body 14 to support the glass plate on the frame body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a glass plate structure including a glass plate that exhibits acoustic performance by vibration and a frame body disposed along an edge of the glass plate.

  As a diaphragm for a speaker or a microphone, cone paper or resin is generally used. However, Patent Document 1 discloses that a glass plate is used instead of these diaphragms.

  Patent Document 1 discloses a panel type speaker combined with a flat display panel. The panel-type speaker of Patent Document 1 includes a flat diaphragm that is excited by an exciter, and is configured such that this diaphragm also serves as a component of the flat display panel. Specifically, a glass plate on the surface side that constitutes the display device is also used as a vibration plate, and the glass plate on the surface side is supported by the frame of the display device through an intermediate layer having appropriate rigidity. ing.

  That is, Patent Document 1 discloses a glass plate structure in which all four peripheral edges of a glass plate that is a vibration plate are supported by a frame body via a rigid mediating layer.

JP 2001-61194 A

  However, in the glass plate structure of Patent Document 1, when the glass plate on the surface side is vibrated, the vibration of the glass plate is transmitted to the frame body through the mediating layer, and the frame body also vibrates. There was also a problem that sound was generated. Due to this problem, the glass plate structure of Patent Document 1 has a problem that good acoustic performance cannot be obtained.

  By the way, as a use of the glass plate used as a vibration plate, it is assumed that it is applied to building materials for windows, walls, ceilings, etc. in addition to the flat display panel disclosed in Patent Document 1. Moreover, the glass plate which is a diaphragm has a function which silences a noise by generating the vibration of an antiphase with respect to a noise. For this reason, a glass plate, which is a diaphragm, is applied to indoor structures such as for self-supporting handrails or smoke barriers installed indoors, and the handrails or smoke barriers have a silencing function. Expected to be used.

  Furthermore, the glass plate which is a diaphragm is not installed in an application location only with a glass plate, but is generally installed in an application location in the form which supported all the peripheral parts of four sides of the glass plate with the frame. Is.

  Thus, although the glass plate which is a diaphragm is used with the form (glass plate structure) by which the edge part was supported by the frame, as demonstrated in patent document 1, the conventional glass plate is used. There is no structural body that can sufficiently exhibit acoustic performance due to the above-described problem, and therefore a glass plate structural body having good acoustic performance has been desired.

  This invention is made | formed in view of such a situation, and it aims at providing the glass plate structure which has favorable acoustic performance.

  In order to achieve the object of the present invention, a glass plate structure of the present invention is a glass plate that is vibrated by a vibrator and a frame that is disposed along the edge of the glass plate, and has an opening area of glass. A frame body larger than the surface area of the main surface of the plate, and a vibration damping member connected to the glass plate and the frame body to support the glass plate on the frame body.

  The glass plate structure of the present invention has good acoustic performance.

  In one embodiment of the present invention, the vibration damping member is preferably a sheet-like member.

  In one embodiment of the present invention, the vibration damping member is preferably a linear member.

In one embodiment of the present invention, the glass plate preferably has a loss coefficient of 1 × 10 ⁻² or more at 25 ° C. and a longitudinal wave sound velocity value of 5.5 × 10 ³ m / s or more in the plate thickness direction. .

  In one embodiment of the present invention, the glass plate is preferably composed of a plurality of glass plates, and a liquid layer is preferably provided between at least a pair of glass plates among the plurality of glass plates.

  ADVANTAGE OF THE INVENTION According to this invention, the glass plate structure which has favorable acoustic performance can be provided.

The perspective view of the glass plate structure which concerns on 1st Embodiment. Front view of the glass plate structure shown in FIG. Sectional drawing of the glass plate of the glass plate structure shown in FIG. Sectional drawing of the glass plate structure which follows the 4-4 line of FIG. Sectional drawing which shows the attachment form of the sheet-like member with respect to a frame Cross-sectional view of the main part showing another form of attachment of the sheet-like member to the glass plate Cross-sectional view of the main part showing another form of attachment of the sheet-like member to the glass plate Sectional drawing which showed the other form of the frame The perspective view of the glass plate structure of 2nd Embodiment. The front view of the glass plate structure shown in FIG. Cross-sectional view of the main part showing the form of connection between the glass plate and the frame by wire Sectional drawing of the principal part of the glass plate structure of 2nd Embodiment to which the frame with a flange shown in FIG. 8 was applied.

  Hereinafter, preferred embodiments of the glass plate structure according to the present invention will be described with reference to the accompanying drawings. In the following drawings, the same or similar members will be described with the same reference numerals, and the description thereof may be omitted when overlapping.

  Further, in the present specification, “to” indicating a numerical range is used in the sense of including the numerical values described before and after the numerical value as a lower limit value and an upper limit value.

  FIG. 1 is a perspective view of the glass plate structure 10 according to the first embodiment, and FIG. 2 is a front view of the glass plate structure 10.

  The glass plate structure 10 includes a glass plate 12 that is vibrated by a vibrator (not shown), and a frame body 14 that is disposed along the edge of the glass plate 12.

  Before describing the characteristics of the glass plate structure 10, the glass plate 12 applied to the present embodiment will be described.

The glass plate 12 preferably has a loss coefficient of 1 × 10 ⁻² or more at 25 ° C. and a longitudinal wave sound velocity value of 5.0 × 10 ³ m / s or more in the plate thickness direction. A large loss coefficient means that the vibration damping ability is large.

  As the loss factor, a value calculated by the half-width method is used. Represented by {W / f}, where W is the frequency width of a point at which the resonance frequency f of the material is −3 dB lower than the peak value of amplitude h (that is, the point at the maximum amplitude −3 [dB]). Define the value as the loss factor.

  In order to suppress the resonance, it is only necessary to increase the loss factor, that is, the frequency width W becomes relatively large with respect to the amplitude h, which means that the peak becomes broad.

  The loss coefficient is a unique value of the material or the like. For example, in the case of a single glass plate, it varies depending on the composition, relative density, and the like. The loss factor can be measured by a dynamic elastic modulus test method such as a resonance method.

  The longitudinal wave sound velocity value is the speed at which the longitudinal wave propagates in the diaphragm. The longitudinal wave sound velocity value and Young's modulus can be measured by an ultrasonic pulse method described in Japanese Industrial Standard (JIS-R1602-1995).

  The glass plate 12 of the glass plate structure 10 includes two or more glass plates as a specific configuration for obtaining a high loss factor and a high longitudinal wave sound velocity value, and at least a pair of glasses among these glass plates. It is preferable to include a predetermined liquid layer between the plates.

  The glass plate 12 can implement | achieve a high loss factor by providing the liquid layer which consists of a liquid between at least a pair of glass plates. In particular, the loss factor can be further increased by setting the viscosity and surface tension of the liquid layer within a suitable range.

  This is considered to be caused by the fact that the pair of glass plates do not adhere to each other and the vibration characteristics as each glass plate are kept different from the case where the pair of glass plates are provided via the adhesive layer.

The liquid layer preferably has a viscosity coefficient of 1 × 10 ⁻⁴ to 1 × 10 ³ Pa · s at 25 ° C. and a surface tension of 15 to 80 mN / m at 25 ° C. If the viscosity is too low, it will be difficult to transmit vibration, and if it is too high, a pair of glass plates located on both sides of the liquid layer will stick together and show vibration behavior as a single glass plate. Is less likely to be attenuated. Moreover, when surface tension is too low, the adhesive force between glass plates will fall and it will become difficult to transmit a vibration. If the surface tension is too high, the pair of glass plates located on both sides of the liquid layer are likely to adhere to each other, and the vibration behavior as a single glass plate is exhibited, so that the resonance vibration is hardly attenuated.

The viscosity coefficient at 25 ° C. of the liquid layer is more preferably 1 × 10 ⁻³ Pa · s or more, and further preferably 1 × 10 ⁻² Pa · s or more. Further, it is more preferably 1 × 10 ² Pa · s or less, and further preferably 1 × 10 ² Pa · s or less.

  The surface tension at 25 ° C. of the liquid layer is more preferably 20 mN / m or more, and further preferably 30 mN / m or more.

  The viscosity coefficient of the liquid layer can be measured with a rotational viscometer or the like. The surface tension of the liquid layer can be measured by a ring method or the like.

If the vapor pressure of the liquid layer is too high, the liquid layer will evaporate. Therefore, the liquid layer preferably has a vapor pressure of 1 × 10 ⁴ Pa or less at 25 ° C. and 1 atm, more preferably 5 × 10 ³ Pa or less, and further preferably 1 × 10 ³ Pa or less. In order to prevent evaporation or outflow of the liquid layer, a sealing process or the like may be performed with a sealing material, but at this time, it is necessary to prevent the vibration of the glass plate 12 from being disturbed by the sealing material. Sealing materials include polyvinyl acetate, polyvinyl chloride, polyvinyl alcohol, ethylene copolymer, polyacrylate, cyanoacrylate, saturated polyester, polyamide, linear polyimide, melamine resin, urea Resins, phenol resins, epoxy-based, polyurethane-based, unsaturated polyester-based, reactive acrylic-based, rubber-based, silicone-based, modified silicone-based, and the like can be used.

  A thinner liquid layer is preferable from the viewpoint of maintaining high rigidity and transmitting vibration. Specifically, when the total thickness of the pair of glass plates is 1 mm or less, the thickness of the liquid layer is preferably 1/10 or less of the total thickness of the pair of glass plates, and 1/20 or less. More preferably, 1/30 or less is further preferable, 1/50 or less is further preferable, 1/70 or less is further preferable, and 1/100 or less is particularly preferable.

  When the total thickness of the pair of glass plates exceeds 1 mm, the thickness of the liquid layer is preferably 100 μm or less, more preferably 50 μm or less, further preferably 30 μm or less, still more preferably 20 μm or less, and even more preferably 15 μm. The following is more preferable, and 10 μm or less is particularly preferable. The lower limit of the thickness of the liquid layer is preferably 0.01 μm or more from the viewpoint of film forming properties and durability.

  The liquid layer is chemically stable, and it is preferable that the liquid layer and the pair of glass plates located on both sides of the liquid layer do not react. “Chemically stable” means, for example, a material that is hardly altered (deteriorated) by light irradiation or a material that does not undergo solidification, vaporization, decomposition, discoloration, chemical reaction with glass, etc. in a temperature range of at least −20 to 70 ° C. To do.

  Specific examples of components of the liquid layer include water, oil, organic solvents, liquid polymers, ionic liquids, and mixtures thereof.

  More specifically, propylene glycol, dipropylene glycol, tripropylene glycol, straight silicone oil (dimethyl silicone oil, methylphenyl silicone oil, methyl hydrogen silicone oil), modified silicone oil, acrylic acid polymer, liquid polybutadiene, glycerin Examples thereof include pastes, fluorine-based solvents, fluorine-based resins, acetone, ethanol, xylene, toluene, water, mineral oil, and mixtures thereof. Among them, it is preferable to contain at least one selected from the group consisting of propylene glycol, dimethyl silicone oil, methyl phenyl silicone oil, methyl hydrogen silicone oil and modified silicone oil, and the main component is propylene glycol or silicone oil. More preferred.

  In addition to the above, a slurry in which powder is dispersed can also be used as the liquid layer. From the viewpoint of improving the loss factor, the liquid layer is preferably a uniform liquid. However, the slurry is effective in providing design properties and functionality such as coloring and fluorescence to the glass plate structure.

  0-10 volume% is preferable and, as for content of the powder in a liquid layer, 0-5 volume% is more preferable. The particle diameter of the powder is preferably 10 nm to 1 μm, more preferably 0.5 μm or less, from the viewpoint of preventing sedimentation.

  Moreover, a fluorescent material may be included in the liquid layer from the viewpoint of imparting designability and functionality. It may be a slurry-like liquid layer in which the fluorescent material is dispersed as a powder, or a uniform liquid layer in which the fluorescent material is mixed as a liquid. Thereby, optical functions, such as light absorption and light emission, can be imparted to the glass plate structure.

  FIG. 3 is a cross-sectional view of the glass plate 12.

  The glass plate 12 includes at least a pair of glass plates 18 and 20 that sandwich the liquid layer 16 from both sides. When one glass plate 18 resonates, the other glass plate 20 does not resonate due to the presence of the liquid layer 16, or the vibration of the resonance of the glass plate 20 can be attenuated. The loss factor can be increased compared to the case of a plate.

  It is preferable that the peak top values of the resonance frequencies of one glass plate 18 and the other glass plate 20 are different, and it is more preferable that the resonance frequency ranges do not overlap. However, even if the glass plate 18 and the glass plate 20 have overlapping resonance frequency ranges or have the same peak top value, even if one glass plate 18 resonates due to the presence of the liquid layer 16. Since the vibration of the other glass plate 20 is not synchronized, the resonance is canceled to some extent, so that a higher loss factor can be obtained than in the case of a single plate.

  That is, when the resonance frequency (peak top) of the glass plate 18 is Qa, the half value width of the resonance amplitude is wa, the resonance frequency (peak top) of the other glass plate 20 is Qb, and the half value width of the resonance amplitude is wb, It is preferable to satisfy the relationship of [Formula 1].

(Wa + wb) / 4 <| Qa-Qb | ... [Formula 1]
The larger the value on the left side in [Formula 1], the greater the difference in resonance frequency (| Qa−Qb |) between the glass plate 18 and the glass plate 20, which is preferable because a high loss factor can be obtained. Therefore, it is more preferable to satisfy the following [Formula 1 ′], and it is more preferable to satisfy the following [Formula 1 ″].

(Wa + wb) / 2 <| Qa−Qb |... [Formula 1 ′]
(Wa + wb) / 1 <| Qa-Qb | ... [Formula 1 "]
Note that the resonance frequency (peak top) and the half-value width of the resonance amplitude of the glass plate 12 can be measured by the same method as the loss coefficient in the glass plate 12.

  As for the glass plate 18 and the glass plate 20, it is so preferable that a mass difference is small, and it is more preferable that there is no mass difference. When there is a mass difference, the resonance of the lighter glass plate can be suppressed by the heavier glass plate, but it is difficult to suppress the resonance of the heavier glass plate by the lighter glass plate. That is, if the mass ratio is biased, the resonance vibrations cannot be canceled in principle due to the difference in inertia force.

  The mass ratio of the glass plate 18 and the glass plate 20 represented by (glass plate 18 / glass plate 20) is preferably 0.8 to 1.25 (8/10 to 10/8), and 0.9 to 1.1. (9/10 to 10/9) is more preferable, and 1.0 (10/10, mass ratio 0) is further preferable.

  The thinner the glass plate 18 and the glass plate 20 are, the more easily the glass plates 18 and 20 are in close contact with each other via the liquid layer 16, and the glass plates 18 and 20 can be vibrated with less energy. Therefore, in the case of a diaphragm use such as a speaker, the glass plates 18 and 20 are preferably as thin as possible. Specifically, the thicknesses of the glass plate 18 and the glass plate 20 are each preferably 15 mm or less, more preferably 10 mm or less, further preferably 5 mm or less, still more preferably 3 mm or less, particularly preferably 1.5 mm or less, 0 .8 mm or less is particularly preferable. On the other hand, if it is too thin, the influence of the surface defects of the glass plate tends to be prominent and cracking is likely to occur, and it is difficult to perform the strengthening treatment, so 0.01 mm or more is preferable, and 0.05 mm or more is more preferable.

  In addition, in the architectural and vehicle opening member application in which the generation of noise due to the resonance phenomenon is suppressed, the thickness of the glass plate 18 and the glass plate 20B is preferably 0.5 to 15 mm, and 0.8 to 10 mm. Is more preferable, and 1.0-8 mm is further more preferable.

At least one of the glass plate 18 and the glass plate 20 has a larger loss coefficient, which increases vibration attenuation as the glass plate 12 and is preferable for use as a vibration plate. Specifically, the loss coefficient at 25 ° C. of the glass plate is preferably 1 × 10 ⁻⁴ or more, more preferably 3 × 10 ⁻⁴ or more, and further preferably 5 × 10 ⁻⁴ or more. Although an upper limit is not specifically limited, From a viewpoint of productivity or manufacturing cost, it is preferable that it is 5 * 10 <^-3> or less. Moreover, it is more preferable that both the glass plate 18 and the glass plate 20 have said loss coefficient.

At least one of the glass plate 18 and the glass plate 20 has a higher longitudinal wave sound velocity value in the plate thickness direction, so that the reproducibility of sound in a high frequency region is improved. Specifically, the longitudinal wave sound velocity value of the glass plate is preferably 5.0 × 10 ³ m / s or more, more preferably 5.5 × 10 ³ m / s or more, and 6.0 × 10 ³ m / s or more. Is more preferable. The upper limit is not particularly limited, but is preferably 7.0 × 10 ³ m / s or less from the viewpoint of the productivity of the glass plate and the raw material cost. Moreover, it is more preferable that both the glass plate 18 and the glass plate 20 satisfy | fill said sound velocity value.

  In addition, the sound velocity value of a glass plate can be measured by the same method as the longitudinal wave sound velocity value in a glass plate structure.

  Although the composition of the glass plate 18 and the glass plate 20 is not specifically limited, For example, it is preferable that it is the following range.

SiO _2: 40 to 80 _{wt%, Al} 2 O 3: _{0~35 wt%, B} 2 O 3: _0~15 wt%, MgO: 0 to 20 wt%, CaO: 0 to 20 wt%, SrO: 0 20 wt%, BaO: 0 to 20 _wt%, Li 2 O: _{0~20 wt%,} Na 2 O: _{0~25 wt%,} K 2 O: _{0~20 wt%,} TiO 2: _0~10 mass %, And ZrO ₂ : 0 to 10% by mass. However, the above composition accounts for 95% by mass or more of the entire glass.

  The composition of the glass plate 18 and the glass plate 20 is more preferably in the following range.

SiO _2: 55 to 75 _{wt%, Al} 2 O 3: _{0~25 wt%, B} 2 O 3: _0~12 wt%, MgO: 0 to 20 wt%, CaO: 0 to 20 wt%, SrO: 0 20 wt%, BaO: 0 to 20 _wt%, Li 2 O: _{0~20 wt%,} Na 2 O: _{0~25 wt%,} K 2 O: _{0~15 wt%,} TiO 2: _0~5 by weight % And ZrO ₂ : 0 to 5% by mass. However, the above composition accounts for 95% by mass or more of the entire glass.

  The smaller the specific gravity of the glass plate 18 and the glass plate 20, the more the glass plate can be vibrated with less energy. Specifically, the specific gravity of the glass plate 18 and the glass plate 20 is preferably 2.8 or less, more preferably 2.6 or less, and even more preferably 2.5 or less. Although a minimum is not specifically limited, It is preferable that it is 2.2 or more.

As the specific elastic modulus, which is a value obtained by dividing the Young's modulus of the glass plate 18 and the glass plate 20 by the density, is larger, the rigidity of the glass plate can be increased. Specifically, the specific elastic modulus of the glass plate 18 and the glass plate 20 is preferably 2.5 × 10 ⁷ m ² / s ² or more, more preferably 2.8 × 10 ⁷ m ² / s ² or more. Even more preferably 0 × 10 ⁷ m ² / s ² or more. The upper limit is not particularly limited, is preferably ^{4.0 × 10 7 m 2 / s} 2 or less.

  It is also possible to color at least one of the glass plate 18 and the glass plate 20 and / or the liquid layer 16. This is useful when the glass plate 12 is desired to have design properties or when it is desired to have functionality such as IR cut, UV cut, and privacy glass.

  Although the glass plate which comprises the glass plate 12 should just be 2 or more, you may use 3 or more glass plates. A plurality of glass plates constituting the glass plate 12 may all use glass plates having different compositions, may all use glass plates having the same composition, and include glass plates having the same composition and glass plates having different compositions. You may use it in combination. Among these, it is preferable to use two or more kinds of glass plates having different compositions from the viewpoint of vibration damping.

  Similarly, the mass and thickness of the glass plate 18 and the glass plate 20 may be all different, all the same, or some different. Especially, it is preferably used from the point of vibration damping property that the mass of the glass plate to comprise is the same.

  A physical tempered glass plate or a chemically tempered glass plate can also be used as at least one of the glass plates constituting the glass plate 12. This is useful for preventing the glass plate 12 from being broken. When it is desired to increase the strength of the glass plate 12, the glass plate located on the outermost surface of the glass plate 12 is preferably a physically tempered glass plate or a chemically tempered glass plate, and all of the constituting glass plates are physically tempered glass plates. Or it is more preferable that it is a tempered glass board.

  It is also useful to use crystallized glass or phase-separated glass as the glass plate from the viewpoint of increasing the longitudinal wave sound velocity value and strength. In particular, when it is desired to increase the strength of the glass plate structure, the glass plate located on the outermost surface of the glass plate structure is preferably crystallized glass or phase-separated glass.

  A coating or a film may be applied to at least one outermost surface of the glass plate 12 as long as the acoustic effect is not impaired. The application of the coating or the application of the film is suitable for preventing scratches, for example.

  The thickness of the coating or film is preferably 1/5 or less of the thickness of the surface glass plate. Conventionally known materials can be used for the coating or film. Examples of the coating include water-repellent coating, hydrophilic coating, water-sliding coating, oil-repellent coating, antireflection coating, and thermal barrier coating. Examples of the film include a glass scattering prevention film, a color film, a UV cut film, an IR cut film, a heat shield film, and an electromagnetic wave shield film.

  The shape of the glass plate 12 can be appropriately designed depending on the application, and may be a flat plate shape or a curved surface shape.

  In order to increase the output sound pressure level in the low frequency band, a structure in which an enclosure or a baffle plate is added to the glass plate 12 may be employed.

  Returning to FIG. 1, the glass plate structure 10 of 1st Embodiment is demonstrated.

  First, an object of the present invention is to provide a glass plate structure 10 in which the glass plate 12 is effectively supported by the frame body 14 without impairing the acoustic performance of the glass plate 12 itself. As described above, in the conventional glass plate structure, the entire peripheral edges of the four sides of the glass plate are supported by the frame body via the mediating layer. For this reason, the vibration of the glass plate by the vibrator is transmitted to the frame body from all the peripheral portions of the four sides of the glass plate, and sound is also generated from the frame body, so that good acoustic performance cannot be obtained.

  Therefore, in the present invention, focusing on the fact that the vibration transmitted from the glass plate to the frame can be reduced by improving the support structure (conventionally equivalent to the mediating layer) that supports the glass plate to the frame, The glass plate structure provided with the support structure is provided.

  The glass plate structure of the present invention having the above support structure has the following basic structure.

  That is, the glass plate structure of the present invention is a glass plate that is vibrated by a vibrator and a frame body that is disposed along the edge of the glass plate, the opening area being larger than the surface area of the main surface of the glass plate. A large frame, and a vibration damping member that is connected to the glass plate and the frame to support the glass plate on the frame.

  The glass plate structure of the present invention is not to directly attach the glass plate to the frame, but to attach the glass plate to the frame via a vibration damping member. That is, by attaching the glass plate to the frame body via the vibration damping member, both the point of effectively supporting the glass plate on the frame body and the point of reducing the vibration transmitted from the glass plate to the frame body are achieved. Is.

  Thereby, the glass plate structure of this invention can reduce the vibration transmitted to a frame from a glass plate compared with the conventional glass plate structure. Therefore, since the glass plate structure of the present invention can reduce the sound generated from the frame, good acoustic performance can be obtained.

  The vibration damping member referred to in the present invention is a member that attenuates vibration transmitted from the edge of the glass plate to the frame, and examples of the form include a sheet-like member or a linear member. This point will be described later.

  Hereinafter, the specific structure of the glass plate structure 10 of 1st Embodiment is demonstrated.

  The glass plate structure 10 of 1st Embodiment is the form which supported the edge part of 4 sides of the glass plate 12 on the frame of 4 sides of the frame 14 via the sheet-like member 22, Especially for windows. It is a suitable glass plate structure.

  The glass plate 12 has four sides (hereinafter also referred to as an upper edge) 12A, an edge (also referred to as a lower edge) 12B, an edge (also referred to as a left edge) 12C, and an edge (right). It is also called an edge.) It is configured in a rectangular shape having 12D. The frame body 14 includes a frame portion (hereinafter also referred to as an upper frame) 14A along the upper edge portion 12A of the glass plate 12, a frame portion (also referred to as a lower frame) 14B along the lower edge portion 12B, and a left side. It has a frame portion (also referred to as a left frame) 14C along the edge portion 12C and a frame portion (also referred to as a right frame) 14D along the right edge portion 12D. The frame 14 is configured such that the opening area A of the rectangular opening 15 surrounded by the frame parts 14 </ b> A to 14 </ b> D is larger than the surface area B of the rectangular main surface 12 </ b> E of the glass plate 12.

  As the material of the frame body 14, a steel material, a metal such as iron, stainless steel, aluminum, titanium, magnesium or tungsten carbide, an alloy material or a composite material such as FRP, a resin material such as acrylic or polycarbonate, a glass material or wood is used. The material is not particularly limited.

  4 is a cross-sectional view of the glass plate structure 10 taken along line 4-4 of FIG.

  As shown in FIG. 4, a sheet-like member 22 that is a vibration damping member is bonded to the entire back surface 12F of the glass plate 12 with an adhesive. The sheet-like member 22 is formed in a rectangular shape larger than the surface area B of the glass plate 12, and the back surface 12 </ b> F of the glass plate 12 is bonded to the substantially central portion of the sheet-like member 22, and the four sides of the sheet-like member 22 are formed. The edge portions 22A, 22B, 22C, and 22D are attached to the frame portions 14A to 14D of the frame body 14.

  FIG. 5 is a cross-sectional view showing a form of attachment of the sheet-like member 22 to the frame body 14.

  As shown in FIG. 5, the frame portions 14 </ b> A to 14 </ b> D of the frame body 14 include a circular cross-sectional groove 26 that accommodates a rubber, metal, or resin shaft 24 having a circular cross-section, and a groove 26 and a frame portion 14 </ b> A. A slit 28 that communicates with the inner side surfaces 13A to 13D of -14D is formed along the longitudinal direction of the frame portions 14A to 14D. The slit 28 is formed with a width W smaller than the diameter D of the shaft 24, and prevents the shaft 24 from dropping from the slit 28.

  The edge portions 22A to 22D of the sheet-like member 22 are inserted into the groove 26 from the slit 28, wound around the shaft 24, and taken out from the slit 28 to the outside of the frame portions 14A to 14D. Thereafter, the edge portions 22A to 22D are pulled along the in-plane direction of the glass plate 12, and the frame-like sheet-like member 22E located between the edge portions 12A to 12D of the glass plate 12 and the inner side surfaces 13A to 13D. It is welded or bonded to. Thereby, as for the glass plate structure 10 of 1st Embodiment, the glass plate 12 is attached to the frame 14 via the sheet-like member 22 to which tension | tensile_strength was provided.

  As another method for attaching the sheet-like member 22 to the frame body 14, the edge portions 22 </ b> A to 22 </ b> D of the sheet-like member 22 are rounded to create an annular portion in advance, and the shaft 24 is inserted into the annular portion, and then the shaft 24 A method may be adopted in which the frame is inserted into the groove 26 from the end openings (not shown) of the frame portions 14A to 14D. In this case, the frame portions 14A to 14D are separated and, for example, the shaft 24 is mounted in the groove 26 of the frame portions 14A and 14B, and then the shaft 24 is mounted in the groove 26 of the frame portions 14C and 14D. Alternatively, the shaft 24 may be attached to the groove 26 of the frame portions 14C and 14D, and then the shaft 24 may be attached to the groove 26 of the frame portions 14A and 14B to be assembled to the frame body 14.

  In the glass plate structure 10 thus configured, since the glass plate 12 is supported by the frame body 14 via the sheet-like member 22 which is a vibration damping member, the vibration generated in the glass plate 12 is the sheet-like member. 22 is attenuated. Thereby, according to the glass plate structure 10, since the sound which generate | occur | produces from the frame 14 can be reduced, favorable acoustic performance can be obtained.

  FIG. 6 is a cross-sectional view of the main part of the glass plate structure 10 showing another form of attachment of the sheet-like member 22 to the glass plate 12. 6, the sheet-like member 22 bonded to the edges 12A to 12D of the glass plate 12 is composed of two sheets 23A and 23B, and the sheet 23A is bonded to the main surface E of the glass plate 12. The sheet 23B is bonded to the back surface 12F of the glass plate 12. Also by this attachment form, the glass plate 12 can be effectively supported by the frame body 14 via the sheet-like member 22, and vibration generated in the glass plate 12 can be attenuated by the sheet-like member 22.

  FIG. 7 is a cross-sectional view of the main part of the glass plate structure 10 showing another form of attachment of the sheet-like member 22 to the glass plate 12. 7 is obtained by bonding two glass plates 12 and 12 to both surfaces of the sheet-like member 22 of FIG. According to this attachment form, the two glass plates 12 and 12 can be effectively supported by the frame body 14 via the sheet-like member 22, and vibration generated in the glass plate 12 is caused by the sheet-like member 22. Can be attenuated.

  FIG. 8 is a cross-sectional view of the frame 14 showing another form of the frame. According to the frame body 14 in FIG. 8, a pair of flanges 30 </ b> A and 30 </ b> B projecting along the in-plane direction of the glass plate 12 are formed on the inner side surfaces 13 </ b> A to 13 </ b> D of the frame portions 14 </ b> A to 14 </ b> D. In addition, the pair of flanges 30 </ b> A and 30 </ b> B are spaced apart from each other in the out-of-plane direction of the glass plate 12.

  According to the frame body 14 in FIG. 8, a frame-like sheet-like member positioned between the edge portions 12A to 12D and the inner side surfaces 13A to 13D of the glass plate 12 in the gap 32 between the flange 30A and the flange 30B. Since 22E can be accommodated, when the glass plate structure 10 is seen from the out-of-plane direction of the glass plate 12, the sheet-like member 22E can be hidden by the flanges 30A and 30B. Therefore, by adopting the frame body 14 of FIG. 8, the glass plate constituting body 10 has a form as if the glass plate 12 was directly supported by the frame body 14 in appearance.

  In the glass plate structure 10 shown in FIGS. 4-8, the form which supported all the edge parts 12A-12D of the four sides of the glass plate 12 to the frame parts 14A-14D via the sheet-like member 22, that is, Although the main surface 12E side and the back surface 12F side of the glass plate structure 10 have been described as being completely partitioned by the glass plate 12 and the sheet-like member 22, the glass plate structure of the present invention is limited to this form. It is not something. In the glass plate structure of the present invention, for example, the edge portion 12A and the frame portion 14A of the glass plate 12 are connected by the strip-shaped sheet-like member 22, and the edge portion 12B and the frame portion 14B are connected to the strip-like sheet. The form connected by the shape member 22 is also included. Similarly, in the glass plate structure of the present invention, the edge portion 12C and the frame portion 14C of the glass plate 12 are connected by a strip-shaped sheet-like member 22, and the edge portion 12D and the frame portion 14D are connected in a strip shape. The form connected by the sheet-like member 22 is also included.

  As the sheet-like member 22, a tetrafluoroethylene / ethylene copolymer film, a polyethylene terephthalate film, or another resin film can be applied. Further, the sheet-like member 22 may be a rubber sheet, or may be a metal foil such as an aluminum foil. The sheet-like member 22 is not limited to a transparent or translucent film, and a colored light-impermeable film may be used.

  In the glass plate structure 10 configured as described above, as shown by a broken line in FIG. 2, the vibrator 34 that vibrates the glass plate 12 may be disposed at the center position of the glass plate 12. You may arrange | position in a corner part and the arrangement position is arbitrary. As an example, by arranging the vibrators at suitable positions on the left and right sides of the glass plate 12, the glass plate structure 10 can be configured as a stereo speaker.

  FIG. 9 is a perspective view of the glass plate structure 40 of the second embodiment, and FIG. 10 is a front view of the glass plate structure 40. In the description of the glass plate structure 40, the same or similar members as those of the glass plate structure 10 of the first embodiment shown in FIGS. 1 and 2 will be described with the same reference numerals.

  The difference between the glass plate structure 40 of the second embodiment and the glass plate structure 10 of the first embodiment is that the glass plate 12 is supported on the frame body 14 by a wire 42 that is a linear member instead of the sheet-like member 22. This is the point.

  The wire 42 is a vibration damping member that couples the glass plate 12 and the frame body 14 and attenuates vibrations transmitted from the glass plate 12 to the frame body 14. In the glass plate structure 40 of the second embodiment, the edge portion 12A and the frame portion 14A of the glass plate 12 are connected by three wires 42, and similarly, the edge portion 12B and the frame portion 14B of the glass plate 12 are connected. It is connected by three wires 42. Further, the edge portion 12C and the frame portion 14C of the glass plate 12 are connected by a single wire 42, and similarly, the edge portion 12D and the frame portion 14D of the glass plate 12 are connected by a single wire 42. . The number of the wires 42 described above is an example, and the number is appropriately changed depending on the size of the glass plate 12.

  FIG. 11 is a cross-sectional view of the main part of the glass plate constituting body 40 showing the connection form of the glass plate 12 and the frame body 14 by the wire 42.

  As shown in FIG. 11, for example, a resin ring 44 is connected to one end of the wire 42, and a screw 46 is connected to the other end of the wire 42. The ring 44 is engaged with a through hole 48 formed in the edges 12A to 12D of the glass plate 12, and the screw 46 is screwed into a screw hole 50 formed through the frame parts 14A to 14D. The screw hole 50 is formed along the in-plane direction of the glass plate 12.

  In the above connection form, the position of the glass plate 12 in the opening 15 of the frame body 14 can be adjusted via the wire 42 by adjusting the position of the screw 46 with respect to the screw hole 50 by rotating the screw 46. And the tension of the wire 42 can be adjusted.

  Also in the glass plate structure 40 of the second embodiment configured as described above, since the glass plate 12 is supported by the frame body 14 via the wire 42 which is a vibration damping member, the vibration generated in the glass plate 12 Is attenuated by wire 42. Thereby, according to the glass plate structure 10, since the sound which generate | occur | produces from the frame 14 can be reduced, favorable acoustic performance can be obtained.

  Examples of the material of the wire 42 include stainless steel, iron, Tegs, plastic, carbon, and spring steel.

  FIG. 12 is a cross-sectional view of the main part of the glass plate constituting body 40 showing that the wire 42 is hidden by the frame body 14 with the flanges 30A and 30B shown in FIG. Also in the glass plate structure 40 of the second embodiment, by adopting the frame body 14 of FIG. 8, the glass plate structure body 40 is as if the glass plate 12 was directly supported by the frame body 14 in appearance. It becomes a form. Further, if a filler 52 such as a soft closed-cell sponge is disposed in the groove 31 having a U-shaped cross section formed by forming the flanges 30A and 30B in the frame body 14, the vibration damping function by the wire 42 can be achieved. The airtightness of the glass plate structure 40 can be ensured without loss. The filler 52 is preferably disposed so as to sandwich the glass plate 12 from both sides (the main surface 12E and the back surface 12F). Further, as the filler 52, a hollow gasket having a small binding force with respect to the glass plate 12 is adopted. Also good.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate structure, 12 ... Glass plate, 12A-12D ... Edge, 14 ... Frame, 14A-14D ... Frame, 15 ... Opening, 16 ... Liquid layer, 18, 20 ... Glass plate, 22 ... Sheet-like member, 24 ... shaft, 26 ... groove, 28 ... slit, 30A, 30B ... flange, 31 ... groove, 32 ... gap, 34 ... vibrator, 40 ... glass plate assembly, 42 ... wire, 44 ... ring, 46 ... screw, 48 ... through hole, 50 ... screw hole, 52 ... filler

Claims (5)

A glass plate vibrated by a vibrator;
A frame disposed along an edge of the glass plate, the frame having an opening area larger than a surface area of a main surface of the glass plate;
By being connected to the glass plate and the frame, a vibration damping member for supporting the glass plate on the frame,
A glass plate structure comprising:   The glass plate structure according to claim 1, wherein the vibration damping member is a sheet-like member.   The glass plate structure according to claim 1, wherein the vibration damping member is a linear member. 4. The glass plate according to claim 1, wherein the glass plate has a loss coefficient of 1 × 10 ⁻² or more at 25 ° C. and a longitudinal wave sound velocity value of 5.0 × 10 ³ m / s or more in the plate thickness direction. 2. The glass plate structure according to item 1.   The glass plate structure according to claim 4, wherein the glass plate is composed of a plurality of glass plates, and a liquid layer is provided between at least a pair of glass plates among the plurality of glass plates.

Images