JP2021134129A - Laminated glass with functional member and manufacturing method of laminated glass with functional member - Google Patents

Abstract

To provide laminated glass with functional member and a manufacturing method of the laminated glass with functional member which can improve outward appearance while keeping performance of the laminated glass even if a functional member exists in the laminated glass.SOLUTION: Windshield 10 comprises a glass plate 12, a glass plate 14, an intermediate film 16 joining the glass plate 12 and the glass plate 14, and a flat harness 20 arranged between the glass plate 12 and the glass plate 14. There is a concave housing part 32 structured by pushing an area of a part of the glass plate 12 out to opposite direction to the glass plate 14. A part of the flat harness 20 is housed to the housing part 32.SELECTED DRAWING: Figure 4

Description

The present invention relates to a laminated glass with a functional member and a method for manufacturing a laminated glass with a functional member.

In recent years, in laminated glass formed by joining two glass plates to each other via an adhesive layer (also referred to as an interlayer film), a laminated glass in which a functional member such as an antenna is interposed between the two glass plates has been proposed. Has been done.

Among them, Patent Document 1 describes a laminated glass in which a first glass plate and a second glass plate are joined to each other via a thermoplastic adhesive layer, in which an antenna structure is embedded in the thermoplastic adhesive layer. Is disclosed.

Special Table 2014-514863A

However, as in Patent Document 1, the conventional laminated glass with a functional member in which an antenna structure (hereinafter, also referred to as a functional member) is interposed between the first glass plate and the second glass plate is available. There is a problem that a part of the region where the functional member is interposed is elastically deformed due to the thickness of the functional member and protrudes more convexly in the out-of-plane direction than the other part.

When the laminated glass with a functional member is elastically deformed as described above, stress is generated in the deformed portion, so that the glass is easily broken and the performance (for example, strength) of the laminated glass is affected. was there. Further, due to the elastic deformation described above, a gap is likely to be generated between the first glass plate and the second glass plate, and when the gap is visually recognized as a bubble from the outside, the appearance is deteriorated. There was also a problem.

The present invention has been made in view of such circumstances, and a function capable of improving the appearance while maintaining the performance of the laminated glass even when a functional member is interposed in the laminated glass. An object of the present invention is to provide a laminated glass with a sex member and a method for manufacturing a laminated glass with a functional member.

In order to achieve the above object, the present invention comprises a first glass plate, a second glass plate, an interlayer film for joining the first glass plate and the second glass plate, and a first glass plate. It is a laminated glass with a functional member provided with a functional member arranged between the glass plate and the second glass plate, and a part of the area of the first glass plate is the second glass plate. Provided is a laminated glass with a functional member, which has a concave first accommodating portion formed by projecting in the opposite direction, and the first accommodating portion contains the functional member.

In order to achieve the above object, the present invention comprises a first glass plate, a second glass plate, an interlayer film for joining the first glass plate and the second glass plate, and a first glass plate. It is a method of manufacturing a laminated glass with a functional member including a functional member arranged between the glass plate and the second glass plate, and is functional by projecting a part of a region of the first glass plate. A concave first accommodating portion for accommodating members is formed, a second glass plate is arranged, and the first glass plate is placed in a direction opposite to the direction in which the first accommodating portion protrudes. The plate is arranged so as to be located, an interlayer film is arranged between the first glass plate and the second glass plate, and a functional member is arranged so as to be accommodated in the first accommodating portion. Provided is a method for manufacturing a laminated glass with a functional member, in which the first glass plate and the second glass plate are joined by an interlayer film.

According to the present invention, even when a functional member is interposed in the laminated glass, the appearance of the laminated glass can be improved while maintaining the performance of the laminated glass.

Front view of the laminated glass with a functional member according to the present invention applied to a windshield for a vehicle. Sectional view taken along line 2-2 of FIG. Front view showing enlarged part A shown in FIG. Explanatory view of the upper part of the windshield shown in FIG. 3 as viewed from the direction of arrow B. Sectional view taken along line 5-5 of FIG. Explanatory drawing which showed the 1st manufacturing method which forms the 1st accommodating part in the 1st glass plate. Explanatory drawing which showed the 2nd manufacturing method which forms the 1st accommodating part in the 1st glass plate. Explanatory drawing showing the main part of the mold used in the second manufacturing method Explanatory drawing explaining the shape of the accommodating part shown in FIG. Cross-sectional view of the main part of another embodiment of the windshield Explanatory drawing which showed the manufacturing method which formed the 2nd accommodating part in the 2nd glass plate Explanatory drawing which showed the main part of the mold used by the manufacturing method of FIG. Explanatory drawing explaining the shape of the accommodating part shown in FIG.

Hereinafter, a method for manufacturing a laminated glass with a functional member and a laminated glass with a functional member according to the present invention will be described with reference to the accompanying drawings.

In each of the drawings shown below, the same components may be designated by the same reference numerals and duplicate description may be omitted. Further, in each drawing, in order to make it easier to understand the contents of the present invention, the size and shape of the member may be partially exaggerated.

Further, although the windshield for a vehicle will be described as an example here, the present invention is not limited to this, and the laminated glass with a functional member of the present invention is a windshield for a vehicle such as a door glass, a rear glass, and a roof glass. It can be applied to other than. The vehicle is typically an automobile, but refers to a moving body having glass including a train, a ship, an aircraft, and the like.

FIG. 1 is a front view of a windshield 10 for a vehicle to which a laminated glass with a functional member according to an embodiment is applied, and is a front view seen from the inside of the vehicle. Further, FIG. 2 is a schematic cross-sectional view of the windshield 10 along line 2-2 of FIG.

The windshield 10 shown in FIGS. 1 and 2 includes, for example, a first glass plate (hereinafter, abbreviated as “glass plate”) 12 arranged on the indoor side and a second glass plate arranged on the outdoor side. (Hereinafter, abbreviated as "glass plate") 14 and 14 are made of laminated glass in which they are arranged to face each other. Further, an interlayer film 16 is arranged between the glass plate 12 and the glass plate 14, and the glass plate 12 and the glass plate 14 are joined by the interlayer film 16.

As the glass plates 12 and 14, for example, inorganic glass such as soda lime glass, aluminosilicate glass, borosilicate glass, non-alkali glass, and quartz glass, or organic glass can be used. When the glass plates 12 and 14 are inorganic glass, the glass plates 12 and 14 can be manufactured by, for example, a float method.

The plate thickness of the glass plate 14 is preferably 1.4 mm or more and 3 mm or less. When the thickness of the glass plate 14 is 1.4 mm or more, strength such as stepping stone resistance can be ensured, and when it is 3 mm or less, the weight of the windshield 10 is reduced and the fuel efficiency of the vehicle is improved, which is preferable.

The plate thickness of the glass plate 12 is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the glass plate 12 is 0.3 mm or more, the handleability is good, and when the thickness is 2.3 mm or less, the weight of the windshield 10 is reduced and the fuel efficiency of the vehicle is improved, which is preferable.

The total thickness of the windshield 10 (laminated glass) is preferably 2.8 mm or more and 10 mm or less. If the total thickness of the windshield 10 is 2.8 mm or more, sufficient rigidity can be ensured. Further, when the total thickness of the windshield 10 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced. The thicknesses of the glass plate 12 and the glass plate 14 may be the same or different.

One or both of the glass plates 12 and 14 may have a wedge-shaped cross section in which the thickness increases from the lower side to the upper side of the windshield with the windshield 10 attached to the vehicle.

When the windshield 10 has a curved shape, the glass plates 12 and 14 are bent and molded after being molded by the float method or the like and before being joined by the interlayer film 16. Bending molding is performed by softening the glass plates 12 and 14 by heating. Specifically, the glass plates 12 and 14 can be bent and molded by gravity molding, press molding or the like after molding by the float method. The heating temperature of the glass plates 12 and 14 during bending is 550 ° C to 700 ° C, which is near the softening point temperature.

The windshield 10 may have a single bending shape that is bent only in one direction, for example, when attached to the opening of the vehicle, only in the front-rear direction or the up-down direction of the vehicle. Further, the windshield 10 may have a compound bent shape that is bent in the front-rear direction and the up-down direction of the vehicle. The radii of curvature of the glass plate 12 and the glass plate 14 in the windshield 10 may be the same or different.

The glass plates 12 and 14 may be untempered glass or tempered glass. Untempered glass is made by molding molten glass into a plate shape and slowly cooling it. The tempered glass may be either physically tempered glass (for example, air-cooled tempered glass) or chemically tempered glass. In the case of physically tempered glass, a compressive stress layer is formed on the glass surface due to the temperature difference between the glass surface and the inside of the glass by an operation other than slow cooling, such as quenching the glass plate uniformly heated in bending molding from near the softening point temperature. The glass surface may be strengthened by causing. In the case of chemically tempered glass, the glass surface may be strengthened by generating compressive stress on the glass surface by an ion exchange method or the like after bending molding. Further, glass that absorbs ultraviolet rays or infrared rays may be used. Further, the glass plates 12 and 14 are preferably transparent, but may be colored glass plates to the extent that the transparency is not impaired.

A shielding layer 18 is formed on the peripheral edge of the windshield 10. The shielding layer 18 can be formed, for example, by applying a ceramic color paste containing a meltable glass frit containing a black pigment on a glass plate by screen printing or the like and firing it, but the shielding layer 18 is not limited thereto. The shielding layer 18 may be formed by, for example, applying an organic ink containing a black or dark pigment on a glass plate by screen printing or the like and drying it. The shielding layer 18 may be a colored interlayer film or a colored film having a light-shielding property, or a combination of the colored interlayer film and the colored ceramic layer. The colored film may be integrated with an infrared reflective film or the like. The shielding layer 18 can suppress deterioration of the resin such as urethane that holds the peripheral edge of the windshield 10 on the vehicle body and the adhesive that attaches the flat harness 20 to the vehicle body due to ultraviolet rays. Further, the flat harness 20 is an example of a band-shaped member among the functional members described later.

The shielding layer 18 may be formed on at least one of the glass plates 12 and 14. Further, the forming surface of the shielding layer 18 is preferably the indoor surface of the glass plates 12 and 14. Note that FIG. 2 illustrates a windshield 10 in which a shielding layer 18 is formed on the inner surface of the glass plate 14 inside the vehicle. The shielding layer 18 may be provided on the entire circumference of the peripheral edge of the windshield 10, but may be formed on a part of the edge of the windshield 10.

A thermoplastic resin is often used as the interlayer film 16, for example, a plasticized polyvinyl acetal resin, a plasticized polyvinyl chloride resin, a saturated polyester resin, a plasticized saturated polyester resin, a polyurethane resin, and a plasticized polyurethane. Thermoplastic resins conventionally used for this type of application, such as based resins, ethylene-vinyl acetate copolymer resin (hereinafter, also referred to as "Ethylene vinyl acetate: EVA"), ethylene-ethyl acrylate copolymer resin, etc. Can be mentioned.

Among these, plastics can be obtained because they have an excellent balance of various performances such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. A polyvinyl acetal-based resin is preferably used. These thermoplastic resins may be used alone or in combination of two or more. "Plasticization" in the above-mentioned plasticized polyvinyl acetal-based resin means that it is plasticized by adding a plasticizer. The same applies to other thermoplastic resins.

Examples of the polyvinyl acetal-based resin include polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter, also referred to as “polyvinyl alcohol: PVA”) with formaldehyde, and polyvinyl acetal-based resin in a narrow sense obtained by reacting PVA with acetaldehyde. Examples thereof include a resin, a polyvinyl butyral resin obtained by reacting PVA with n-butylaldehyde (hereinafter, also referred to as “polyvinyl butyral: PVB”) and the like. In particular, PVB is preferable because it has an excellent balance of various performances such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These polyvinyl acetal resins may be used alone or in combination of two or more. However, the material forming the interlayer film 16 is not limited to the thermoplastic resin.

The glass plates 12 and 14 are joined by heat-pressing at a temperature at which the interlayer film 16 softens. For example, when a PVB film is used as the interlayer film 16, an autoclave device is used, the heating temperature is preferably about 130 ° C., and the pressing force is preferably about 1 MPa. When an EVA film is used, the heating temperature is preferably about 90 ° C., and the pressing force is preferably about 1 MPa. Since the method for producing a laminated glass using the above-mentioned film is well known, the description thereof will be omitted here.

The thickness of the interlayer film 16 is preferably 0.5 mm or more and 3.0 mm or less. When the thickness of the interlayer film 16 is 0.5 mm or more, the penetration resistance required for the windshield 10 can be ensured. Further, when the thickness of the interlayer film 16 is 3 mm or less, the weight is reduced and the handleability is improved.

The interlayer film 16 may include a region having a sound insulation function, an infrared ray shielding function, an ultraviolet ray shielding function, a shade band (a function of reducing visible light transmittance), and the like. Further, the interlayer film 16 may have two or more layers. For example, when the interlayer film 16 is composed of three layers and the hardness of the central layer is lower than the hardness of both layers, the sound insulation is improved. The interlayer film 16 may have a wedge-shaped cross section in which the film thickness increases from the lower side to the upper side of the windshield with the windshield 10 attached to the vehicle.

FIG. 3 is an enlarged front view of the upper central portion (A portion) of the windshield 10 shown in FIG. In FIG. 3, a part of the flat harness 20, all of the pair of bus bars 22, 24, and a part of the plurality of heat rays 26, 26 ... Are shown superimposed on the shielding layer 18.

As shown in FIG. 3, the upper central portion of the windshield 10 that does not obstruct the driver's field of vision is provided with a mounting portion 28 to which an in-vehicle camera (not shown) is mounted. The mounting portion 28 is configured by opening a part of the shielding layer 18 in a trapezoidal shape, for example. As a result, the vehicle-mounted camera mounted on the mounting portion 28 can image the scenery in front of the vehicle via the transparent mounting portion 28.

A pair of bus bars 22 and 24 are arranged on the mounting portion 28 so as to sandwich the opening of the mounting portion 28 in the left-right direction so as to face each other. The bus bar 22 and the bus bar 24 are electrically connected to each other via a plurality of heat wires 26, 26 ... Arranged in the openings of the mounting portion 28. The bus bar 22 is, for example, a positive electrode, and is connected to the positive side of a power source such as a battery mounted on a vehicle via the flat harness 20 described above. Further, the bus bar 24 is, for example, a negative electrode, which is also connected to the negative side of the power supply via the flat harness 20.

When an electric current is supplied from the above power source to the heat wires 26, 26 ... Through the pair of bus bars 22, 24, the heat wires 26, 26 ... Generate heat. The heat generated by the heat rays 26, 26 ... warms the mounting portion 28 of the windshield 10 and removes freezing or fogging on the surface of the mounting portion 28. That is, the heating device 30 is configured in the mounting portion 28 by the flat harness 20, the pair of bus bars 22, 24, the heat rays 26, 26, ..., And the heating device 30 secures a good image by the vehicle-mounted camera.

By the way, the heating device 30 is arranged between the glass plate 12 and the glass plate 14. For this reason, in the conventional laminated glass configuration, there is a problem that a part of the laminated glass in which the heating device 30 is interposed is elastically deformed by the thickness of the heating device 30 and protrudes in an out-of-plane direction more than the other part. was there. Here, the thickness of the flat harness 20 (for example, several hundred microns) is about 100 times thicker than the thickness of each of the bus bars 22, 24 and the heat ray 26 formed of the silver or copper paste (for example, several microns). .. Therefore, the thickness of the heating device 30 of this example is dominated by the thickness of the flat harness 20. The bus bars 22, 24 and the heat rays 26, 26 ... Are printed on, for example, a transparent PET (polyethylene terephthalate) sheet, and the sheet is sandwiched between the glass plate 12 and the glass plate 14 to form the windshield 10. It is mounted on the mounting portion 28. Further, the present invention is not limited to this embodiment, and the bus bars 22, 24 and the heat rays 26 may be directly printed and arranged on one of the glass plates 12 and 14.

FIG. 4 is an explanatory view of the upper portion of the windshield 10 shown in FIG. 3 as viewed from the direction of arrow B, and FIG. 5 is a cross-sectional view taken along line 5-5 of FIG.

As shown in FIGS. 4 and 5, the glass plate 12 on the indoor side has a concave first accommodation formed by projecting the surface 12A of a part of the region in the direction opposite to that of the glass plate 14. It has a portion (hereinafter, abbreviated as “accommodating portion”) 32. The accommodating portion 32 is not formed by elastically deforming the glass plate in the out-of-plane direction unlike the conventional laminated glass, but is formed, for example, in the process of bending the glass plate 12. .. That is, the glass plate 12 has a concave accommodating portion 32 as a single body. Then, in the windshield 10 of the embodiment, a part of the flat harness 20 is accommodated in the accommodating portion 32.

As described above, since the windshield 10 of the embodiment accommodates a part of the flat harness 20 in the accommodating portion 32 provided in advance on the glass plate 12, the surface 12A (including the curved portion 12B around the surface 12A) is described below. , Same) does not generate stress due to elastic deformation. Further, the windshield 10 of the embodiment does not generate air bubbles due to the elastic deformation described above. Therefore, according to the windshield 10 of the embodiment including the flat harness 20, even when a functional member is interposed in the laminated glass, the appearance of the laminated glass is maintained while maintaining the performance (for example, strength) of the laminated glass. Can be improved.

Next, a method of manufacturing the windshield 10 of the embodiment will be described.

The windshield 10 is basically manufactured by the following manufacturing method. That is, by projecting the surface 12A, which is a part of the glass plate 12, the accommodating portion 32 accommodating a part of the flat harness 20 is formed. Then, the glass plate 14 is arranged at a predetermined position. Then, the glass plate 12 is arranged with respect to the glass plate 14 so that the glass plate 14 is located in the direction opposite to the direction in which the accommodating portion 32 protrudes. Then, the interlayer film 16 is arranged between the glass plate 12 and the glass plate 14, and a part of the flat harness 20 is arranged so as to be accommodated in the accommodating portion 32, and the glass plate 12 and the glass plate 14 are intermediate. It is joined by the film 16. The windshield 10 is manufactured by such a manufacturing method. Hereinafter, a specific description will be given.

FIG. 6 is an explanatory diagram showing a first manufacturing method for forming the accommodating portion 32 on the glass plate 12 among the plurality of steps of the above manufacturing method.

In the first manufacturing method, the glass plate 14 and the glass plate 12 are arranged in this order on the ring-shaped bending mold 34, and the plate-shaped body 36 is placed on the glass plate 12 and the glass in the planned formation portion 33 of the accommodating portion 32. This is a manufacturing method for forming the accommodating portion 32 by arranging it between the plate 14 and the plate 14. The plate-shaped body 36 is made of, for example, heat-resistant metal or ceramics and has the same size as a part of the flat harness 20, but is not limited to this and may be larger than the size of the flat harness 20. .. In this state, the glass plate 12 and the glass plate 14 are heated to near the softening point temperature by a heating furnace (not shown), so that the glass plate 12 and the glass plate 14 are bent and formed by their own weight, and at the same time, the accommodating portion 32 is formed.

According to the first manufacturing method, the glass plates 12 and 14 are bent and molded by their own weight along the concave molding surface of the bending mold 34, respectively. Then, since the planned formation portion 33 of the glass plate 12 is bent and molded along the plate-shaped body 36, the planned formation portion 33 (corresponding to the surface 12A) in contact with the plate-shaped body 36 becomes another portion. On the other hand, the glass plate 14 is projected in the direction opposite to that of the glass plate 14. As a result, the above-mentioned surface 12A and the concave accommodating portion 32 are formed on the glass plate 12.

After that, the glass plates 12 and 14 are cooled (slowly cooled) to the atmospheric temperature, and then the glass plates 12 and 14 are taken out from the bending mold 34. Then, a part of the flat harness 20 is accommodated in the accommodating portion 32 of the glass plate 12, and the flat harness 20 is connected to the bus bars 22 and 24. Then, the interlayer film 16 is arranged between the glass plate 12 and the glass plate 14, and the glass plate 12 and the glass plate 14 are joined (heat-bonded) by the interlayer film 16. As a result, the windshield 10 shown in FIG. 1 can be manufactured.

The first manufacturing method is a manufacturing method in which the accommodating portion 32 is formed at the same time in the process of bending the glass plate 12, but the accommodating portion 32 may be formed before the glass plate 12 is bent and molded. The accommodating portion 32 may be formed after the glass plate 12 is bent and molded.

FIG. 7 is an explanatory view showing a second manufacturing method for forming the accommodating portion 32 on the glass plate 12.

In the second manufacturing method, a glass plate 12 heated to near the softening point temperature by a heating furnace (not shown) is placed on the press ring 38, and the press ring 38 and the mold 40 (see FIG. 8) are used. This is a manufacturing method in which the accommodating portion 32 is formed by sandwiching the glass plate 12. As shown in FIG. 7, the concave press surface 38A of the press ring 38 is provided with a convex portion 44 having the same size as a part of the flat harness 20 so as to project. The convex press surface 40A of the mold 40 is formed with a concave portion 42 at a position facing the convex portion 44 to allow the planned formation portion 33 pushed out by the convex portion 44 to escape to the outside.

According to the second manufacturing method, in the press ring 38 and the mold 40, the glass plate 12 is arranged so that the convex portion 44 and the concave portion 42 are located at the positions where the glass plate 12 is to be formed 33, and the glass plate 12 and the press ring 38 are arranged. The glass plate 12 is sandwiched between the mold 40 and the mold 40 to form the accommodating portion 32. Also by this second manufacturing method, the accommodating portion 32 can be formed at the same time in the process of bending the glass plate 12 by the press ring 38 and the mold 40. In this case, the mold 40 is an example of the first molding die, and the press ring 38 is an example of the second molding die.

A concave portion 42 may be provided on the press ring 38 side, and a convex portion 44 may be provided on the mold 40 side. In this case, the mold 40 is an example of the second molding die, and the press ring 38 is an example of the first molding die. When the concave portion 42 is provided on the press ring 38 side and the convex portion 44 is provided on the mold 40 side, the car is used in the process of bending the glass plate 14 located on the outdoor side by the press ring 38 and the mold 40. A housing portion protruding outward can be formed at the same time.

Further, the second manufacturing method is a manufacturing method in which the accommodating portion 32 is formed at the same time in the bending process of the glass plate 12 as described above, but only the planned formation portion 33 is heated to near the softening point temperature. It may be formed by the convex portion 42. In this case, the accommodating portion 32 may be formed before the glass plate 12 is bent and formed, or the accommodating portion 32 may be formed after the glass plate 12 is bent and formed. Further, it is preferable to dispose a buffer sheet made of Kepler or felt for protecting the glass plate 12 on the press surface 38A of the press ring 38 and the press surface 40A of the mold 40.

Next, a third manufacturing method for forming the accommodating portion 32 on the glass plate 12 will be described.

In the third manufacturing method, the glass plate 12 is heated to near the softening point temperature in a molding furnace (not shown) to be bent and molded, and then the glass plate 12 is placed on a quench ring (not shown) and accommodated while being slowly cooled. This is a manufacturing method for forming the portion 32. The quench ring is a member that receives the glass plate 12 bent and molded in the above-mentioned molding furnace, and has a peripheral shape of the glass plate 12 that substantially matches the bent shape of the glass plate 12 to be molded. Further, the quench ring is provided with a convex portion or a concave portion having the same size as a part of the flat harness 20, and is placed so that the convex portion or the concave portion is located at a place to be a planned formation portion 33 of the glass plate 12. , The accommodating portion 32 is formed by its own weight while slowly cooling the glass plate 12.

Next, a fourth manufacturing method for forming the accommodating portion 32 on the glass plate 12 will be described.

The fourth manufacturing method is a manufacturing method in which only the planned formation portion 33 of the glass plate 12 is heated to the vicinity of the softening point by a local heater or the like to form the accommodating portion 32. Specifically, a third molding die (not shown) having a convex portion having the same size as the accommodating portion 32 and a fourth molding die (not shown) having a concave portion having the same size as the accommodating portion 32 are used. The accommodating portion 32 is formed by pressing the convex portions and the concave portions facing each other against the heated forming planned portion 33.

In the above-mentioned fourth manufacturing method, the glass plate 12 may be bent and molded before the accommodating portion 32 is formed, or the glass plate 12 may be bent and formed after the accommodating portion 32 is formed.

The accommodating portion 32 (including the surface 12A) formed by the first to fourth manufacturing methods is arranged in the forming region of the shielding layer 18 as shown in FIGS. 4 and 5, and the surface 12A is hidden by the shielding layer 18. ing. As a result, according to the windshield 10 of the embodiment, the driver is not allowed to recognize the distortion of the perspective image caused by the surface 12A and the curved portion 12B.

Hereinafter, an example of a suitable shape of the accommodating portion 32 will be described. FIG. 9 is an explanatory diagram used to explain the shape of the accommodating portion 32.

“H” shown in FIG. 9 refers to the depth of the accommodating portion 32. The depth of the accommodating portion 32 is the distance from the bottom portion 32A of the accommodating portion 32 to the vehicle interior side surface 12C of the glass plate 12 in the normal direction of the surface 12A. The depth "h" of the accommodating portion 32 is preferably 0.8 times or more and 1.2 times or less the thickness "t" of the flat harness 20 which is a functional member, for example. When "h" is 0.8 times "t", the surface 12A of the glass plate 12 is elastically deformed by a minute amount and a minute stress is generated, but this does not affect the performance of the windshield 10. In addition, the generation of bubbles can be suppressed. When "h" is 1.2 times or less of "t", the amount of protrusion of the surface 12A of the glass plate 12 is suppressed.

“W1” shown in FIG. 9 refers to the width of the parallel section in which the accommodating portion 32 and the glass plate 14 are parallel to each other. The width "W1" of the parallel section is preferably 0.8 times or more and 1.2 times or less the width "W" of the flat harness 20, for example. When "W1" is 0.8 times "W", the surface 12A of the glass plate 12 is elastically deformed by a minute amount and a minute stress is generated, but this does not affect the performance of the windshield 10. In addition, the generation of bubbles can be suppressed. When "W1" is 1.2 times or less of "W", the length of "W1" is suppressed.

“W2” shown in FIG. 9 refers to the width of the non-parallel section in which the accommodating portion 32 and the glass plate 14 are non-parallel. In other words, it refers to the width of the curved portion 12B. The width "W2" of the non-parallel section is preferably, for example, 10 mm or more and 100 mm or less. When "W2" is 10 mm or more, the protrusion of the surface 12A becomes inconspicuous, and when "W2" is 100 mm or less, the length of "W2" is suppressed.

In the above embodiment, the windshield 10 in which the accommodating portion 32 is formed on the glass plate 12 among the glass plates 12 and 14 has been described, but the present invention is not limited to this, and the same accommodating portion is also provided on the glass plate 14. (Corresponding to the second accommodating portion) may be formed. Hereinafter, another embodiment in which the accommodating portion is formed on the glass plate 14 will be described.

As shown in FIG. 10, the glass plate 14 of the windshield 50 according to another embodiment has a concave shape formed by projecting the surface 14A of a part of the region in the direction opposite to that of the glass plate 12. It has an accommodating portion 52. Further, the accommodating portion 32 and the accommodating portion 52 of the glass plate 12 are arranged so as to face each other, and a part of the flat harness 20 is accommodated in the accommodating portion 54 defined by the accommodating portion 32 and the accommodating portion 52.

The accommodating portion 52 of the glass plate 14 is also formed in the process of bending the glass plate 14, similarly to the accommodating portion 32. That is, the glass plate 14 has a concave accommodating portion 52 as a single body.

FIG. 11 is an explanatory view showing a manufacturing method for forming the accommodating portion 52 on the glass plate 14.

In the manufacturing method shown in FIG. 11, a glass plate 14 heated to near the softening point temperature by a heating furnace (not shown) is placed on the press ring 38, and the press ring 38 and the mold 40 (see FIG. 12) are combined. This is a manufacturing method in which the accommodating portion 52 (see FIG. 10) is formed by sandwiching the glass plate 12 with the glass plate 12. The convex press surface 40A of the mold 40 is provided with a convex portion 46 having the same size as a part of the flat harness 20 protruding from a place to be a planned formation portion 33. Further, as shown in FIG. 11, the concave press surface 38A of the press ring 38 facing the convex portion 46 is formed with a concave portion 48 that allows the planned formation portion 33 pushed out by the convex portion 46 to escape to the outside.

According to the above manufacturing method, in the press ring 38 and the mold 40, the glass plate 14 is arranged so that the convex portion 46 and the concave portion 48 are located at the positions where the glass plate 14 is to be formed 33, and the press ring 38 and the mold 40 are formed. The glass plate 14 is sandwiched between the 40 and the glass plate 14 to form the accommodating portion 52. Also by this manufacturing method, the accommodating portion 52 can be formed at the same time in the process of bending the glass plate 12 by the press ring 38 and the mold 40.

As described above, in the windshield 50 of the other embodiment, since a part of the flat harness 20 is accommodated in the accommodating portions 32 and 52 provided in advance in the glass plates 12 and 14, the surfaces 12A and 14A are elastically deformed. No resulting stress is generated. Further, the windshield 50 of the other embodiment does not generate air bubbles due to the elastic deformation described above. Therefore, according to the windshield 50 of another embodiment provided with the flat harness 20, even when a functional member is interposed in the laminated glass, the performance (for example, strength) of the laminated glass is maintained and the appearance of the laminated glass is maintained. The appearance can be improved.

Hereinafter, an example of suitable shapes of the accommodating portions 32 and 34 will be described. FIG. 13 is an explanatory diagram used to explain the shapes of the accommodating portions 32 and 52.

“H” shown in FIG. 13 refers to the total depth of the accommodating portion 32 and the accommodating portion 52. The total depth is the distance from the bottom 32A of the accommodating portion 32 to the bottom 52A of the accommodating portion 52. The depth "H" is preferably, for example, 0.8 times or more and 1.2 times or less the thickness "t" of the flat harness 20. When "H" is 0.8 times "t", the surfaces 12A and 14A of the glass plates 12 and 14 are elastically deformed by a minute amount to generate a minute stress, which affects the performance of the windshield 50. It is not a thing, and the generation of bubbles is also suppressed. When "H" is 1.2 times or less of "t", the amount of protrusion of the surfaces 12A and 14A of the glass plates 12 and 14 is suppressed.

Since "W1" and "W2" shown in FIG. 13 are the same as "W1" and "W2" shown in FIG. 9, description thereof will be omitted here.

Although the present invention has been described above, the present invention is not limited to the above examples, and some improvements or modifications may be made without departing from the gist of the present invention. Hereinafter, some modifications will be described.

<Modification example 1>
In the embodiment, a windshield 10 having a housing portion 32 on the glass plate 12 (see FIG. 5) and a windshield 50 having housing portions 32 and 52 on the glass plates 12 and 14 (see FIG. 10) have been exemplified. However, the windshield may be provided with the accommodating portion 52 only on the glass plate 14.

<Modification 2>
In the embodiment, the flat harness 20 which is a strip-shaped member is exemplified as the functional member, but the present invention is not limited to this, and a strip-shaped member such as a bus bar or the like may be used. In this case, it is preferable that at least one of the glass plates 12 and 14 is provided with an accommodating portion for accommodating the bus bar.

<Modification example 3>
In the embodiment, the strip-shaped member such as the flat harness 20 is exemplified as the functional member, but the present invention is not limited to this, and for example, a film-shaped member such as a dimming film, a planar antenna, or a screen may be used. Examples of the light control film include SPD (Suspended Particle Device), PDLC (polymer dispersion type liquid crystal display), GHLC (guest host type liquid crystal display), electrochromic, photochromic, thermochromic and the like. When the functional member is a film-like member, it is preferable that at least one of the glass plates 12 and 14 is provided with an accommodating portion for accommodating the film-like member. Further, a PET sheet on which the bus bars 22, 24 and the heat rays 26, 26 ... Described in this example are printed is also included in the film-like member.

<Modification example 4>
Further, the functional member may be a panel-shaped member such as a liquid crystal display, an organic EL (Organic Electro-Luminescence) display, an inorganic EL (Inorganic Electro-Luminescence) display, or an LED (light emitting diode) display. In this case, it is preferable that at least one of the glass plates 12 and 14 is provided with an accommodating portion for accommodating the panel-shaped member.

<Modification 5>
Further, the functional member may be a linear member such as a heat wire, an antenna wire, or a wire harness. In this case, it is preferable that at least one of the glass plates 12 and 14 is provided with an accommodating portion for accommodating the linear member.

10 ... Windshield, 12 ... Glass plate, 12A ... Surface, 14 ... Glass plate, 14A ... Surface, 16 ... Intermediate film, 18 ... Shielding layer, 20 ... Flat harness, 22 ... Bus bar, 24 ... Bus bar, 26 ... Heat ray, 28 ... mounting part, 30 ... heating device, 32 ... accommodating part, 33 ... planned formation part, 34 ... bending mold, 36 ... plate-shaped body, 38 ... press ring, 38A ... press surface, 40 ... mold, 40A ... press Surface, 42 ... convex, 44 ... concave, 50 ... windshield, 52 ... accommodating, 54 ... accommodating

Claims (14)

Between the first glass plate, the second glass plate, the interlayer film that joins the first glass plate and the second glass plate, and the first glass plate and the second glass plate. It is a laminated glass with a functional member provided with a functional member arranged in.
A part of the region of the first glass plate has a concave first accommodating portion formed by projecting in a direction opposite to that of the second glass plate.
The functional member is accommodated in the first accommodating portion.
Laminated glass with functional members. A shielding layer is formed on the edge of the laminated glass with the functional member.
The first accommodating portion is arranged in the forming region of the shielding layer.
The laminated glass with a functional member according to claim 1. The depth of the first accommodating portion is 0.8 to 1.2 times the thickness of the functional member.
The width of the parallel section between the first accommodating portion and the second glass plate is 0.8 to 1.2 times the width of the functional member.
The width of the non-parallel section between the first accommodating portion and the second glass plate is 10 to 100 mm.
The laminated glass with a functional member according to claim 1 or 2. The second glass plate has a concave second accommodating portion formed by a part of the region protruding in a direction opposite to the direction in which the first glass plate is arranged.
The first accommodating portion and the second accommodating portion are arranged so as to face each other.
The laminated glass with a functional member according to claim 1 or 2. The total depth of the first accommodating portion and the second accommodating portion is 0.8 to 1.2 times the thickness of the functional member.
The width of the parallel section between the first accommodating portion and the second accommodating portion is 0.8 to 1.2 times the width of the functional member.
The width of the non-parallel section between the first accommodating portion and the second accommodating portion is 10 to 100 mm.
The laminated glass with a functional member according to claim 4. The functional member is one or more members selected from a band-shaped member, a film-shaped member, a panel-shaped member, or a linear member.
The laminated glass with a functional member according to any one of claims 1 to 5. Between the first glass plate, the second glass plate, the interlayer film that joins the first glass plate and the second glass plate, and the first glass plate and the second glass plate. It is a method of manufacturing a laminated glass with a functional member provided with a functional member arranged in.
By projecting a part of the region of the first glass plate, a concave first accommodating portion for accommodating the functional member is formed.
The second glass plate is arranged,
The first glass plate is arranged so that the second glass plate is located in the direction opposite to the direction in which the first accommodating portion protrudes.
An interlayer film is arranged between the first glass plate and the second glass plate, and the functional member is arranged so as to be accommodated in the first accommodating portion.
The first glass plate and the second glass plate are joined by the interlayer film.
A method for manufacturing laminated glass with functional members. The second glass plate and the first glass plate are arranged in this order on a ring-shaped mold, and a plate having the same size as the functional member is placed in a portion to be formed of the first accommodating portion. The shape is placed between the first glass plate and the second glass plate, and the shape is placed between the first glass plate and the second glass plate.
By heating the first glass plate and the second glass plate to near the softening point temperature, the first glass plate and the second glass plate are bent and formed by their own weight, and at the same time, the first accommodation is performed. Form a part,
The method for manufacturing a laminated glass with a functional member according to claim 7. The method for manufacturing a laminated glass with a functional member according to claim 8, wherein the plate-shaped body is made of metal or ceramics. The first glass plate is heated to near the softening point temperature, the first glass plate is sandwiched between the first molding die and the second molding die to be molded, and the first molding die is formed with the functional member. A convex portion or a concave portion having the same size is provided, and the first glass plate is arranged so that the convex portion or the concave portion is located at a place where the first accommodating portion of the first glass plate is to be formed. Then, the first molding die and the second molding die are sandwiched between the first molding die to form the first accommodating portion.
The method for manufacturing a laminated glass with a functional member according to claim 7. After the first glass plate is heated to near the softening point temperature and bent and molded, the first glass plate is placed on a quench ring and slowly cooled, and the quench ring has the same size as the functional member. A convex portion or a concave portion to be formed is provided, and the first glass plate is placed on a place where the convex portion or the concave portion is to be formed of the first accommodating portion so that the convex portion or the concave portion is located. The first accommodating portion is formed by its own weight while slowly cooling the glass.
The method for manufacturing a laminated glass with a functional member according to claim 7. Only the planned formation portion of the first accommodating portion of the first glass plate is heated to the vicinity of the softening point, and only the planned formation portion of the first accommodating portion of the first glass plate is heated to the vicinity of the softening point. A third molding die having a convex portion having the same size as the accommodating portion and a fourth molding die having a concave portion having the same size as the first accommodating portion so that the convex portion and the concave portion face each other. The first accommodating portion is formed by pressing the first accommodating portion against the planned formation portion.
The method for manufacturing a laminated glass with a functional member according to claim 7. The method for manufacturing a laminated glass with a functional member according to claim 12, wherein the first glass plate is bent and molded before the first accommodating portion is formed. The method for manufacturing a laminated glass with a functional member according to claim 12, wherein the first glass plate is bent and molded after the first accommodating portion is formed.

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