JP7328625B2 - LAMINATED GLASS WITH FUNCTIONAL MEMBER AND METHOD FOR MANUFACTURING LAMINATED GLASS WITH FUNCTIONAL MEMBER - Google Patents

Description

TECHNICAL FIELD The present invention relates to a laminated glass with a functional member and a method for producing the laminated glass with a functional member.

In recent years, there has been proposed a laminated glass in which a functional member such as an antenna is interposed between the two glass plates in the laminated glass formed by bonding two glass plates to each other through an adhesive layer (also called an intermediate film). It is

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

Japanese translation of PCT publication No. 2014-514836

However, conventional laminated glass with a functional member in which an antenna structure (hereinafter also referred to as a functional member) is interposed between a first glass plate and a second glass plate, as in Patent Document 1, Another problem is that a partial region in which the functional member is interposed is elastically deformed due to the thickness of the functional member and protrudes more outwardly than the other portion.

When the laminated glass with a functional member is elastically deformed as described above, stress is generated in the deformed portion, which affects the performance (e.g., strength) of the laminated glass, such as making the glass more susceptible to breakage. was there. In addition, due to the elastic deformation described above, a gap is likely to occur between the first glass plate and the second glass plate, and if the gap is visually recognized as air bubbles from the outside, the external appearance will be poor. There was also a problem.

The present invention has been made in view of such circumstances, and has the function of improving the external 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 method for manufacturing a laminated glass with a functional member and a laminated glass with a functional member.

In order to achieve the above object, the present invention provides a first glass plate, a second glass plate, an intermediate film for bonding the first glass plate and the second glass plate, and a first glass plate. and a functional member disposed between and a second glass sheet, wherein a partial region of the first glass sheet is different from the second glass sheet Provided is a laminated glass with a functional member, which has a recessed first accommodating portion formed by protruding in the opposite direction, and the functional member is accommodated in the first accommodating portion.

In order to achieve the above object, the present invention provides a first glass plate, a second glass plate, an intermediate film for bonding the first glass plate and the second glass plate, and a first glass plate. and a functional member disposed between a second glass sheet and a functional member-attached laminated glass, wherein the functional member is provided by protruding a partial region of the first glass sheet. A concave first receiving portion for receiving the member is formed, a second glass plate is disposed, and the first glass plate is placed against the second glass in a direction opposite to the direction in which the first receiving portion protrudes. the intermediate film is arranged between the first glass plate and the second glass plate; the functional member is arranged so as to be accommodated in the first accommodation portion; Provided is a method for producing a laminated glass with a functional member, wherein one glass plate and a second glass plate are joined with an intermediate film.

According to the present invention, even when a functional member is interposed in the laminated glass, it is possible to improve the appearance while maintaining the performance of the laminated glass.

FIG. 2 is a front view of the laminated glass with a functional member according to the present invention applied to a vehicle windshield. Sectional view taken along line 2-2 in Fig. 1 The front view which expanded and showed the A section shown in FIG. Explanatory diagram of the upper part of the windshield shown in FIG. 3 viewed from the direction of arrow B Sectional view along line 5-5 in FIG. Explanatory drawing showing the first manufacturing method for forming the first accommodating portion in the first glass plate. Explanatory drawing showing the second manufacturing method for forming the first accommodating portion in the first 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. Principal part cross-sectional view of another embodiment of the windshield Explanatory drawing showing the manufacturing method for forming the second housing portion in the second glass plate. Explanatory drawing showing the main part of the mold used in the manufacturing method of FIG. Explanatory drawing explaining the shape of the accommodation part shown in FIG.

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

In each drawing shown below, the same components may be denoted by the same reference numerals, and redundant description may be omitted. Also, in each drawing, the sizes and shapes of members may be partially exaggerated in order to facilitate understanding of the content of the present invention.

Here, a vehicle windshield will be described as an example, but it is not limited to this, and the laminated glass with a functional member of the present invention can be used for vehicle windshields such as door glass, rear glass, and roof glass. can be applied to others. The vehicle is typically an automobile, but also refers to moving bodies having glass including trains, ships, aircraft, and the like.

FIG. 1 is a front view of a vehicle windshield 10 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. 2 is a schematic cross-sectional view of the windshield 10 along line 2-2 in 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 a “glass plate”) 14 are arranged to face each other and are composed of laminated glass. An intermediate 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 this intermediate film 16 .

As the glass plates 12 and 14, for example, inorganic glass such as soda lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, quartz glass, or organic glass can be used. If the glass plates 12, 14 are made of inorganic glass, the glass plates 12, 14 can be produced by, for example, the float method.

The plate thickness of the glass plate 14 is preferably 1.4 mm or more and 3 mm or less. When the plate thickness of the glass plate 14 is 1.4 mm or more, strength such as resistance to stepping stones can be ensured.

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

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

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

Further, when the windshield 10 has a curved shape, the glass sheets 12 and 14 are bent before being joined by the intermediate film 16 after forming by the float method or the like. Bending is performed by softening the glass plates 12 and 14 by heating. Specifically, the glass plates 12 and 14 can be bent 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.

The windshield 10 may have a single-curved shape that is bent only in one direction, for example, in the longitudinal direction or the vertical direction of the vehicle when installed in an opening of the vehicle. Further, the windshield 10 may have a double-curved shape that is bent in the longitudinal direction and the vertical 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, 14 may be untempered glass or tempered glass. Untempered glass is obtained by shaping molten glass into a plate 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 strengthened glass, a compressive stress layer is created on the glass surface due to the temperature difference between the glass surface and the inside of the glass by operations other than slow cooling, such as rapidly cooling the glass sheet heated uniformly in bending from near the softening point temperature. The glass surface may be strengthened by producing In the case of chemically strengthened glass, after bending, the glass surface may be strengthened by applying compressive stress to the glass surface by an ion exchange method or the like. Glass that absorbs ultraviolet rays or infrared rays may also be used. Furthermore, although the glass plates 12 and 14 are preferably transparent, they may be colored glass plates to the extent that they do not impair the transparency.

The windshield 10 has a shielding layer 18 formed on its periphery. The shielding layer 18 can be formed, for example, by applying a ceramic color paste containing fusible glass frit containing a black pigment onto a glass plate by screen printing or the like and baking the paste, but is not limited thereto. The shielding layer 18 may be formed by, for example, applying an organic ink containing a black or dark pigment onto a glass plate by screen printing or the like and drying the ink. The shielding layer 18 may be a colored intermediate film or a colored film having light shielding properties, or a combination of a colored intermediate film and a 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 a resin such as urethane that holds the peripheral portion of the windshield 10 to the vehicle body and an adhesive agent that attaches the flat harness 20 to the vehicle body. Also, the flat harness 20 is an example of a belt-like 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 . Moreover, it is preferable that the surface on which the shielding layer 18 is formed is the indoor-side surface of the glass plates 12 and 14 . Note that FIG. 2 illustrates the windshield 10 in which the shielding layer 18 is formed on the inner side surface of the glass plate 14 . The shielding layer 18 may be provided around the entire periphery of the windshield 10 , or may be formed along a portion of the edge of the windshield 10 .

Thermoplastic resins are often used as the intermediate film 16, and examples thereof include plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, and plasticized polyurethanes. thermoplastic resins, ethylene-vinyl acetate copolymer-based resins (hereinafter also referred to as "Ethylene vinyl acetate: EVA"), ethylene-ethyl acrylate copolymer-based resins, etc. is mentioned.

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

Polyvinyl acetal resins include polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter also referred to as "polyvinyl alcohol: PVA") and formaldehyde, narrowly defined polyvinyl acetal resin obtained by reacting PVA and acetaldehyde. Polyvinyl butyral resin obtained by reacting PVA with n-butyraldehyde (hereinafter also referred to as "poly vinyl butyral: PVB") and the like. In particular, PVB is suitable because of its excellent balance of properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These polyvinyl acetal-based resins may be used alone, or two or more of them may be used in combination. However, the material forming the intermediate film 16 is not limited to thermoplastic resin.

The glass plates 12 and 14 are joined by thermocompression bonding at a temperature at which the intermediate film 16 softens. For example, when a PVB film is used as the intermediate film 16, an autoclave is used, the heating temperature is preferably about 130° C., and the pressure is preferably about 1 MPa. Moreover, when EVA film is used, the heating temperature is preferably about 90° C., and the pressure is preferably about 1 MPa. Since the manufacturing method of laminated glass using the film as described above is well known, the description thereof is omitted here.

The thickness of the intermediate film 16 is preferably 0.5 mm or more and 3.0 mm or less. When the thickness of the intermediate 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 intermediate film 16 is 3 mm or less, the weight is reduced and the handleability is improved.

The intermediate film 16 may have a region having a sound insulation function, an infrared shielding function, an ultraviolet shielding function, a shade band (a function of reducing visible light transmittance), and the like. Also, the intermediate film 16 may have two or more layers. For example, when the intermediate film 16 is composed of three layers and the hardness of the middle layer is lower than that of the layers on both sides, the sound insulation is improved. The intermediate 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 when the windshield 10 is attached to the vehicle.

FIG. 3 is a front view showing an enlarged upper center portion (A portion) of the windshield 10 shown in FIG. 3, a portion of the flat harness 20, all of the pair of bus bars 22 and 24, and a portion of the plurality of heat wires 26, 26 are shown superimposed on the shielding layer 18. As shown in FIG.

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

A pair of busbars 22 and 24 are arranged in the mounting portion 28 so as to sandwich the opening of the mounting portion 28 in the left-right direction. The busbars 22 and 24 are electrically connected to each other through a plurality of hot wires 26, 26, . . . 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 the vehicle via the flat harness 20 described above. Also, the bus bar 24 is, for example, a negative pole, which is also connected to the negative side of the power supply via the flat harness 20 .

When current is supplied to the hot wires 26, 26, . The heat generated by the hot wires 26, 26 . That is, the flat harness 20, the pair of bus bars 22, 24, and the heating wires 26, 26, .

By the way, the heating device 30 is arranged between the glass plate 12 and the glass plate 14 . For this reason, in the structure of the conventional laminated glass, the part where the heating device 30 is interposed elastically deforms by the thickness of the heating device 30 and protrudes in a convex shape in the out-of-plane direction 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 (for example, several microns) of each of the busbars 22, 24 and the hot wire 26 formed of silver or copper paste. . Therefore, the thickness of the heating device 30 of this example is governed by the thickness of the flat harness 20 . The bus bars 22, 24 and the heat wires 26, 26 are printed on, for example, a transparent PET (polyethylene terephthalate) sheet. It is attached to the attachment portion 28 . Alternatively, the busbars 22 and 24 and the hot wire 26 may be printed directly on one of the glass plates 12 and 14 and disposed.

4 is an explanatory view of the upper part 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 in FIG.

As shown in FIGS. 4 and 5, the glass plate 12 on the interior side has a concave first accommodation structure in which the surface 12A of a part of the region protrudes in the direction opposite to the glass plate 14. As shown in FIGS. It has a section (hereinafter abbreviated as “receiving section”) 32 . The accommodation portion 32 is not formed by elastically deforming the glass plate in the out-of-plane direction like conventional laminated glass, but is formed in the process of bending the glass plate 12, for example. . That is, the glass plate 12 has a concave housing portion 32 as a single unit. Further, in the windshield 10 of the embodiment, part of the flat harness 20 is accommodated in the accommodation portion 32 .

As described above, in the windshield 10 of the embodiment, a portion of the flat harness 20 is accommodated in the accommodation portion 32 provided in advance in the glass plate 12, so the surface 12A (including the curved portion 12B around the surface 12A). , the 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 if a functional member is interposed in the laminated glass, the performance (for example, strength) of the laminated glass is maintained and the appearance is improved. can be improved.

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

The windshield 10 is basically manufactured by the following manufacturing method. That is, by protruding the surface 12</b>A, which is a partial area of the glass plate 12 , an accommodating portion 32 that accommodates a portion 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 positioned in the direction opposite to the direction in which the accommodating portion 32 protrudes. Then, the intermediate film 16 is arranged between the glass plate 12 and the glass plate 14, a part of the flat harness 20 is arranged so as to be accommodated in the accommodation portion 32, and the glass plate 12 and the glass plate 14 are interposed. Bonded by membrane 16 . The windshield 10 is manufactured by such a manufacturing method. A specific description will be given below.

FIG. 6 is an explanatory view showing the first manufacturing method for forming the housing portion 32 in the glass plate 12 among the plurality of steps of the manufacturing method described above.

In the first manufacturing method, the glass plate 14 and the glass plate 12 are stacked in this order on a ring-shaped bending mold 34, and a plate-like body 36 is placed in the formation planned portion 33 of the housing portion 32. In this manufacturing method, the housing portion 32 is formed by arranging it between the plate 14 and the plate 14 . The plate-like body 36 is made of heat-resistant metal or ceramics, for example, and has the same size as a portion 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 plates 12 and 14 are heated in a heating furnace (not shown) to near the softening point temperature, so that the glass plates 12 and 14 are bent under their own weight, and at the same time, the housing portion 32 is formed.

According to the first manufacturing method, the glass sheets 12 and 14 are bent along the concave forming surface of the bending die 34 by their own weight. Then, since the formation scheduled portion 33 of the glass plate 12 is bent along the plate-shaped body 36, the formation scheduled portion 33 (corresponding to the surface 12A) in contact with the plate-shaped body 36 is formed on other portions. On the other hand, it protrudes relatively in the opposite direction to the glass plate 14 . As a result, the glass plate 12 is formed with the surface 12</b>A and the recessed accommodating portion 32 .

After that, the glass plates 12 and 14 are cooled (slowly cooled) to the ambient temperature, and then removed from the bending mold 34 . A portion of the flat harness 20 is accommodated in the accommodation portion 32 of the glass plate 12 and the flat harness 20 is connected to the bus bars 22 and 24 . An intermediate film 16 is placed between the glass plate 12 and the glass plate 14 , and the glass plate 12 and the glass plate 14 are bonded (heated and pressed) by the intermediate film 16 . Thereby, the windshield 10 shown in FIG. 1 can be manufactured.

Note that the first manufacturing method is a manufacturing method in which the accommodating portion 32 is formed simultaneously during the bending process of the glass plate 12, but the accommodating portion 32 may be formed before the glass plate 12 is bent. The accommodation portion 32 may be formed after the glass plate 12 is bent.

7A and 7B are explanatory diagrams showing a second manufacturing method for forming the accommodating portion 32 in the glass plate 12. FIG.

In the second manufacturing method, the glass plate 12 heated to near the softening point temperature in a heating furnace (not shown) is placed on the press ring 38, and the press ring 38 and the mold 40 (see FIG. 8) In this manufacturing method, the housing 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 protruding portion 44 having the same size as a part of the flat harness 20. As shown in FIG. A convex pressing surface 40A of the mold 40 has a concave portion 42 formed at a position facing the convex portion 44 so as to release the portion to be formed 33 pushed out by the convex portion 44 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 protrusions 44 and the recesses 42 are positioned at the positions of the glass plate 12 to be formed into the portions 33 to be formed, and the press ring 38 and the mold 40 are formed. The housing portion 32 is formed by sandwiching the glass plate 12 with the mold 40 . According to this second manufacturing method, the housing portion 32 can also be formed simultaneously during the process of bending the glass plate 12 using the press ring 38 and the mold 40 . In this case, the mold 40 is an example of a first mold, and the press ring 38 is an example of a second mold.

In addition, the concave portion 42 may be provided on the press ring 38 side, and the convex portion 44 may be provided on the mold 40 side. In this case, the mold 40 is an example of a second mold, and the press ring 38 is an example of a first mold. If the recess 42 is provided on the press ring 38 side and the protrusion 44 is provided on the mold 40 side, the vehicle is bent during the process of bending the glass plate 14 located on the outdoor side by the press ring 38 and the mold 40 . An outwardly projecting receptacle can be formed at the same time.

As described above, the second manufacturing method is a manufacturing method in which the housing portion 32 is simultaneously formed in the process of bending the glass plate 12, but only the forming 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, or the accommodating portion 32 may be formed after the glass plate 12 is bent. Moreover, it is preferable to arrange a cushioning sheet made of Kevlar or felt to protect the glass plate 12 on the press surface 38A of the press ring 38 and the press surface 40A of the mold 40. As shown in FIG.

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

In the third manufacturing method, after heating the glass plate 12 to near the softening point temperature in a forming furnace (not shown) and bending the glass plate 12, the glass plate 12 is placed on a quench ring (not shown) and stored while slowly cooled. This is a manufacturing method for forming the portion 32 . The quench ring is a member that receives the glass sheet 12 bent in the forming furnace, and has a peripheral shape of the glass sheet 12 that roughly matches the bent shape of the glass sheet 12 to be formed. In addition, 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 concave portion is positioned at a place to be the forming portion 33 of the glass plate 12. , while gradually cooling the glass plate 12 , the accommodation portion 32 is formed by its own weight.

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

A fourth manufacturing method is a manufacturing method in which the housing portion 32 is formed by heating only the formation scheduled portion 33 of the glass plate 12 to near the softening point with a local heater or the like. Specifically, using a third mold (not shown) having a convex portion of the same size as the accommodating portion 32 and a fourth mold (not shown) having a concave portion of the same size as the accommodating portion 32, The receiving portion 32 is formed by pressing the convex portion and the concave portion facing each other against the heated formation-scheduled portion 33 .

In the fourth manufacturing method described above, the glass plate 12 may be bent before forming the housing portion 32 , or may be bent after forming the housing portion 32 .

The housing portion 32 (including the surface 12A) formed by the first to fourth manufacturing methods is arranged in the formation area of the shielding layer 18 as shown in FIGS. ing. Thus, according to the windshield 10 of the embodiment, the driver does not recognize the distortion of the see-through image caused by the surface 12A and the curved portion 12B.

An example of a suitable shape of the housing portion 32 will be described below. FIG. 9 is an explanatory diagram used to describe the shape of the housing portion 32. As shown in FIG.

“h” shown in FIG. 9 indicates the depth of the housing portion 32 . The depth of the housing portion 32 is the distance from the bottom portion 32A of the housing 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 housing portion 32 is preferably, for example, 0.8 times or more and 1.2 times or less the thickness "t" of the flat harness 20, which is the functional member. When "h" is 0.8 times "t", the surface 12A of the glass plate 12 undergoes a small amount of elastic deformation and generates a small stress, but this does not affect the performance of the windshield 10. Also, the generation of air bubbles can be suppressed. When "h" is 1.2 times or less of "t", the protrusion amount 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. 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 undergoes a small amount of elastic deformation and generates a small stress, but this does not affect the performance of the windshield 10. Also, the generation of air 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 between the accommodation portion 32 and the glass plate 14 . 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 receiving portion 32 is formed in the glass plate 12 of the glass plates 12 and 14 has been described. (corresponding to the second accommodating portion) may be formed. Another embodiment in which the glass plate 14 is formed with a receiving portion will be described below.

As shown in FIG. 10 , the glass plate 14 of the windshield 50 according to another embodiment has a concave shape in which the surface 14A of a part of the region protrudes in the direction opposite to the glass plate 12 . It has a housing portion 52 . The housing portion 32 and the housing portion 52 of the glass plate 12 are arranged to face each other, and a portion of the flat harness 20 is housed in the housing portion 54 defined by the housing portion 32 and the housing 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. As shown in FIG. In other words, the glass plate 14 has a concave accommodation portion 52 as a single unit.

11A and 11B are explanatory diagrams showing a manufacturing method for forming the accommodating portion 52 in the glass plate 14. FIG.

In the manufacturing method shown in FIG. 11, the glass plate 14 heated to near the softening point temperature in 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 placed. This is a manufacturing method in which the housing portion 52 (see FIG. 10) is formed by sandwiching the glass plate 12 between the two. A convex press surface 40</b>A of the mold 40 is provided with a convex portion 46 having the same size as a part of the flat harness 20 and protruding at a place to be the forming portion 33 . In addition, as shown in FIG. 11, a recess 48 is formed in the recessed press surface 38A of the press ring 38 facing the protrusion 46 to release the portion to be formed 33 pushed out by the protrusion 46 to the outside.

According to the above-described manufacturing method, the glass plate 14 is arranged in the press ring 38 and the mold 40 so that the projections 46 and the recesses 48 are positioned at the locations of the glass plate 14 to be formed 33, and the press ring 38 and the mold are placed. 40 sandwich the glass plate 14 to form a storage portion 52 . Also by this manufacturing method, the receiving portion 52 can be formed simultaneously during 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 another embodiment, since a part of the flat harness 20 is accommodated in the accommodation portions 32, 52 provided in advance in the glass plates 12, 14, the surfaces 12A, 14A are elastically deformable. induced stress does not occur. Further, the windshield 50 of another embodiment does not generate air bubbles due to the elastic deformation described above. Therefore, according to the windshield 50 of another embodiment including the flat harness 20, even if a functional member is interposed in the laminated glass, the performance (for example, strength) of the laminated glass is maintained while improving the appearance. It can improve appearance.

An example of a suitable shape of the housing portions 32 and 34 will be described below. FIG. 13 is an explanatory diagram used to explain the shape of the housing portions 32 and 52. As shown in FIG.

“H” shown in FIG. 13 indicates the total depth of the respective depths of the housing portion 32 and the housing portion 52 . The total depth is the distance from the bottom portion 32A of the housing portion 32 to the bottom portion 52A of the housing portion 52 . The depth "H" is preferably 0.8 times or more and 1.2 times or less the thickness "t" of the flat harness 20, for example. When "H" is 0.8 times "t", the surfaces 12A and 14A of the glass plates 12 and 14 are elastically deformed by a small amount to generate a small stress, which affects the performance of the windshield 50. In addition, the generation of air bubbles can be 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.

Note that "W1" and "W2" shown in FIG. 13 are the same as "W1" and "W2" shown in FIG. 9, so 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 several improvements and modifications may be made without departing from the scope of the present invention. Some modifications will be described below.

<Modification 1>
In the embodiment, the windshield 10 (see FIG. 5) having the glass plate 12 provided with the accommodating portion 32 and the windshield 50 (see FIG. 10) having the glass plates 12 and 14 provided with the accommodating portions 32 and 52 are exemplified. However, the windshield may have the housing portion 52 only in 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 functional member is not limited to this, and may be a strip-shaped member such as a busbar. In this case, it is preferable that at least one of the glass plates 12 and 14 is provided with an accommodation portion for accommodating the bus bar.

<Modification 3>
In the embodiment, the belt-shaped member such as the flat harness 20 is exemplified as the functional member, but the functional member is not limited to this, and may be a film-shaped member such as a light control film, a planar antenna, or a screen. Light control films include, for example, SPD (Suspended Particle Device), PDLC (polymer dispersed liquid crystal), GHLC (guest-host liquid crystal), 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. The film member also includes a PET sheet on which the busbars 22, 24 and the hot wires 26, 26, . . . are printed.

<Modification 4>
Also, the functional member may be a panel 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 a housing portion for housing the panel-shaped member.

<Modification 5>
Also, the functional member may be a linear member such as a heating 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 a housing portion for housing the linear member.

DESCRIPTION OF SYMBOLS 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 wire, 28... Mounting part 30... Heating device 32... Accommodating part 33... Planned formation part 34... Bending mold 36... Plate-like body 38... Press ring 38A... Press surface 40... Mold 40A... Press Surface 42...Convex part 44...Concave part 50...Windshield 52...Accommodating part 54...Accommodating part

Claims (14)

a first glass plate, a second glass plate, an intermediate film bonding the first glass plate and the second glass plate, and between the first glass plate and the second glass plate A functional member-attached laminated glass comprising:
A concave first accommodating portion formed by protruding in a direction opposite to that of the second glass plate in a partial region of the first glass plate,
The functional member is housed in the first housing part,
Laminated glass with functional materials. A shielding layer is formed on the edge of the laminated glass with the functional member,
The first housing portion is arranged in the formation 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 housing 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 recessed second housing part formed by protruding in a direction opposite to the direction in which the first glass plate is arranged, and
The first accommodation portion and the second accommodation portion are arranged to face each other,
The laminated glass with a functional member according to claim 1 or 2. The width of the parallel section between the first accommodation portion and the second accommodation portion is 0.8 to 1.2 times the width of the functional member,
The width of the non-parallel section between the first accommodation portion and the second accommodation 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 strip-shaped member, a film-shaped member, a panel-shaped member, or a linear member,
A laminated glass with a functional member according to any one of claims 1 to 5. a first glass plate, a second glass plate, an intermediate film bonding the first glass plate and the second glass plate, and between the first glass plate and the second glass plate A functional member-attached laminated glass manufacturing method comprising:
forming a recessed first accommodating portion for accommodating the functional member by protruding a partial region of the first glass plate;
Placing the second glass plate,
Arranging the first glass plate so that the second glass plate is positioned in a direction opposite to the direction in which the first housing portion protrudes;
Disposing an intermediate film between the first glass plate and the second glass plate, and disposing the functional member so as to be accommodated in the first accommodation portion,
bonding the first glass plate and the second glass plate with the intermediate film;
A method for producing a laminated glass with a functional member. The second glass plate and the first glass plate are stacked 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 housing portion. placing a shaped body 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 by their own weight, and at the same time, the first accommodation is performed. forming part of
The method for manufacturing the laminated glass with a functional member according to claim 7. 9. The method for producing a laminated glass with functional members according to claim 8, wherein said plate-like body is made of metal or ceramics. The first glass plate is heated to near the softening point temperature, and the first glass plate is sandwiched between a first mold and a second mold to be molded, and the functional member and the functional member are placed in the first mold. 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 positioned at a portion of the first glass plate to be formed with the first accommodating portion. and forming the first housing portion by sandwiching between the first mold and the second mold;
The method for manufacturing the 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, 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. The first glass plate is placed so that the convex portion or the concave portion is positioned at the place where the first accommodating portion is to be formed, and the first glass plate is placed. Forming the first housing portion by its own weight while slowly cooling the
The method for manufacturing the laminated glass with a functional member according to claim 7. Only the portion scheduled to form the first accommodation portion of the first glass plate is heated to near the softening point, and only the portion scheduled to form the first accommodation portion of the first glass plate is heated to the first temperature. A third mold having a convex portion of the same size as the accommodating portion and a fourth mold having a concave portion of the same size as the first accommodating portion are arranged such that the convex portion and the concave portion face each other. Forming the first housing portion by pressing against a portion to be formed of the first housing portion;
The method for manufacturing the laminated glass with a functional member according to claim 7. 13. The method for producing a laminated glass with a functional member according to claim 12, wherein the first glass sheet is bent before forming the first accommodating portion. 13. The method for producing a laminated glass with a functional member according to claim 12, wherein the first glass sheet is bent after forming the first accommodating portion.

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