WO2022050188A1 - Laminated glass for vehicle - Google Patents

Abstract

Provided is a laminated glass for a vehicle with which wiring is simple, even when a plurality of power supplying bodies are removed external to the laminated glass.　A laminated glass for a vehicle according to the present invention addresses the aforementioned problem and is obtained by laminating, in order, a first glass plate, a first intermediate film, a second intermediate film, and a second glass plate. The laminated glass for a vehicle is characterized in that: between the first intermediate film and the second intermediate film, there is a first functional member, a second functional member, a first power supplying body that is electrically connected to the first functional member, and a second power supplying body that is electrically connected to the second functional member; and in a planar view of the first glass plate, the peripheries of the first functional member and of the second functional member are inward relative to the periphery of the first glass plate, and the first power supplying body and the second power supplying body intersect only with a power supplying edge that is one edge of the first glass plate and do not overlap within the surface of the first glass plate.

Description

Laminated glass for vehicles

The present invention relates to laminated glass for vehicles.

Conventionally, in laminated glass used for vehicles, a layer having various functions is provided between one glass and the other glass, and the layer is driven by power supply from an external power source so as to exhibit a desired function. A vehicle window glass that realizes this function is known (for example, Patent Document 1).

The vehicle window glass of Patent Document 1 is provided with a coating as a layer between the outer glass and the inner glass, and the coating has a heating function. In particular, the vehicle window glass of Patent Document 1 has a coating that can be electrically heated and a current conductor provided for electrical connection between the two poles of the voltage source in order to exert a heating function. The current conductor is connected to the lead wire leading to the outside.

Japanese Patent No. 6545376

By the way, in recent years, the laminated glass is required to be provided with a plurality of functional members such as a dimming member and an image display member that require power supply from the outside of the laminated glass. When a plurality of functional members are provided inside the laminated glass, it is necessary to connect a plurality of feeding bodies extending from the outside to the inside of the laminated glass according to the number of the laminated glass.

In the vehicle window glass of Patent Document 1, a plurality of feeding leads (feeding bodies) connected to one heatable conductive coating are separated from the outside by current conductors on the upper side and the lower side inside the glass. The embodiments provided in the above are disclosed. However, in this case, the lead wire connected to the window glass for the vehicle is routed from the upper side to the current conductor on the lower side inside the glass, outside the glass, inside the body frame of the vehicle, and along the peripheral edge of the glass. I had to wire it. In addition, when there is a large gap between multiple feeding units that go out from the inside of the glass to the outside of the glass, it is difficult to bundle the cables connected from the feeding unit to the power supply mounted on the vehicle, and the cables sway accordingly. There was a problem that the number of members fixed so as not to move increased.

The present invention has been made in view of the above problems, and provides a laminated glass for vehicles that is easy to wire even when a plurality of feeding bodies are taken out outside the laminated glass.

The laminated glass for vehicles according to one embodiment of the disclosure is a laminated glass for vehicles in which a first glass plate, an interlayer film, and a second glass plate are laminated in this order, and the interlayer film is a first. It has one interlayer film and a second interlayer film, and between the first interlayer film and the second interlayer film, a first functional member, a second functional member, and a first functional member. It has a first power feeding body electrically connected and a second feeding body electrically connected to a second functional member, and has a first function in a plan view of the first glass plate. The sex member and the second functional member are arranged inside the peripheral edge of the first glass plate, and the first feeding body and the second feeding body have only the feeding side which is one side of the first glass plate. It is characterized by intersecting and not overlapping in the plane of the first glass plate.

Further, the method for manufacturing a laminated glass for a vehicle according to one embodiment of the disclosure is a method for manufacturing a laminated glass for a vehicle in which a first glass plate, an interlayer film, and a second glass plate are laminated in this order. There is a first glass plate, an interlayer film, a first functional member to which the first feeding body is connected, a second functional member to which the second feeding body is connected, and a second glass plate. It has a laminating step of preparing a laminated body and a first crimping step of heating and pressurizing the laminated body to crimp the laminated body, and the interlayer film has a first interlayer film and a second interlayer film. In the laminating step, the first functional member to which the first feeding body is electrically connected and the second functional member to which the second feeding body is electrically connected are connected to the first interlayer film. It is located between and the second interlayer film, and in the plan view of the first glass plate, the first feeding body and the second feeding body intersect only the feeding side which is one side of the first glass plate. In addition, the step of arranging the first feeding body and the second feeding body so as not to overlap in the plane of the first glass plate is included, and the laminating step includes the feeding side of the first glass plate. It is characterized in that the following equations (1) and (2) are satisfied in the cross-sectional view including.
Equation (1): _ti ≧ 0.8 × (t _F1 + _ti F1)
Equation (2): _ti ≧ 0.8 × (t _F2 + _ti F2)
ti: Thickness of the interlayer film between the first feeding body and the second feeding body in the plane direction t _F1 : Thickness of the thickest portion of the first feeding body t _F2 : _Maximum thickness of the second feeding body Part thickness _tiF1 : Thickness of the interlayer film in the portion overlapping with the first feeding body _tiF2 : Thickness of the interlayer film in the portion overlapping with the second feeding body

According to one embodiment of the disclosure, it is possible to provide a laminated glass for a vehicle having a high degree of freedom in wiring while allowing a plurality of functional members to function satisfactorily.

Top view of laminated glass for vehicles according to the first embodiment of the present invention. Cross-sectional view of laminated glass for vehicles according to the first embodiment One side view of laminated glass for vehicles according to the first embodiment One side view of laminated glass for vehicles according to the second embodiment of the present invention. One side view of laminated glass for vehicles according to the third embodiment of the present invention. Top view of laminated glass for vehicle according to 4th Embodiment of this invention Cross-sectional view of laminated glass for vehicles according to the fourth embodiment One side view of laminated glass for vehicles according to the fourth embodiment A sectional view of a laminated glass for a vehicle according to a fifth embodiment of the present invention. One side view of laminated glass for vehicles according to the fifth embodiment 11 (a) is a side view of the laminated body, FIG. 11 (b) is an excerpt of the broken line portion shown in FIG. 11 (a), and FIG. 11 (c) is FIG. 11 It is an enlarged view near the feeding body in (a) and FIG. 11 (b).

In this specification, the notations "top" and "bottom" represent the top and bottom, respectively, when the laminated glass for a vehicle is mounted on a vehicle. The "side side" of laminated glass for vehicles represents the part connecting the upper side and the lower side. The "cross section" refers to a cut end when the laminated glass for a vehicle is cut in the thickness direction, or a side surface of the laminated glass for a vehicle. It should be noted that the side surface is not a term that limits only the surface including the side side. Further, in the present specification, the "periphery" represents the outermost side of a predetermined member, and the "peripheral portion" represents the vicinity of the "periphery". When a predetermined member has a hollow, the "periphery" is also referred to as an "outer edge" and may be distinguished from the "inner edge" which is the outer peripheral edge of the hollow.

In the present specification, "same shape" and "same size" mean having the same shape and the same size in human appearance. And, unless otherwise noted, "abbreviation" means the same in human appearance. In addition, "to" representing a numerical range includes upper and lower limits.

The laminated glass for vehicles according to the embodiment of the present invention can be applied to, for example, a windshield, a rear glass, a side glass, a roof glass, a quarter glass and the like. Laminated glass for vehicles is also simply referred to as "laminated glass" below.

Hereinafter, some embodiments of the present invention will be described with reference to the drawings. In each drawing, in order to make each component easy to see, the scale of the dimension is different for each component, and the curved shape is also shown as a planar shape.

(First Embodiment)
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view of a laminated glass for a vehicle according to a first embodiment of the present invention, and is also a plan view showing a second embodiment and a third embodiment of the present invention described later.

The laminated glass 100 for vehicles according to the present embodiment has a first glass plate 10 and a second glass plate 18 having a main surface having the same shape, and an interlayer film 20 arranged between them. Then, the first glass plate 10, the interlayer film 20, and the second glass plate 18 are laminated in this order. Further, the central axis (not shown) of the laminated glass 100 for a vehicle is a virtual line in the thickness direction passing through the center of gravity G of the laminated glass 100 for a vehicle.

As shown in FIG. 1, the laminated glass 100 for a vehicle has a substantially trapezoidal shape in a plan view, but is not limited to this. The laminated glass 100 for a vehicle may have, for example, a substantially triangular shape or a substantially rectangular shape in a plan view, depending on the portion of the vehicle on which the laminated glass 100 is mounted.

The plan view of the laminated glass 100 for vehicles and the plan view of the first glass plate 10 are such that the laminated glass 100 for vehicles is placed on a horizontal plane with the first glass plate 10 facing up and vertically upward with respect to the horizontal plane. Refers to seeing from. Further, the cross-sectional view refers to viewing from a direction perpendicular to a predetermined cross section of the laminated glass for a vehicle. Further, the side view refers to a view from a direction perpendicular to a predetermined side surface (for example, a side surface including the feeding side 10s) of the laminated glass for a vehicle.

Further, at least a part of the vertical cross section of the laminated glass 100 for a vehicle may have a substantially wedge shape in which the thickness gradually decreases. Laminated glass having a vertical cross-sectional shape that is at least partially thickened from the bottom to the top is suitable for functioning as a head-up display (HUD), and can be particularly preferably used for a windshield. .. In order for the laminated glass 100 for vehicles to have such a cross-sectional shape, at least one of the first glass plate 10, the second glass plate 18, and the interlayer film 20 has at least one cross section in the vertical direction. The portion may be substantially wedge-shaped.

As shown in FIG. 1, the laminated glass 100 for a vehicle according to the present embodiment includes a first functional member 14 and a second functional member 15 inside the interlayer film 20. In the plan view of the first glass plate 10, the first functional member 14 and the second functional member 15 do not overlap. That is, in the plan view of the first glass plate 10, the first functional member 14 and the second functional member 15 are separated from each other. The peripheral edges of the two functional members 14 and 15 are both inside the peripheral edge of the first glass plate 10. Here, "inside" represents the direction of the central axis passing through the center of gravity G of the laminated glass 100 for vehicles when viewed from the peripheral edge of a predetermined member (here, the first glass plate 10). On the contrary, the "outside" represents the peripheral direction of a predetermined member (here, the first glass plate 10) when viewed from the central axis passing through the center of gravity G of the laminated glass 100 for vehicles.

Hereinafter, the first feeding body 16 and the second feeding body 17 are collectively referred to simply as a "feeding body". The end portion of the power feeding body on the functional member side may be electrically connected directly to the functional member, or may be electrically connected via a transparent conductive film or a foil-like conductor called a bus bar. .. The connection method may be any known means.

The first feeding body 16 and the second feeding body 17, respectively, are flexible strip-shaped connecting members in which at least two foil-like conductors having different potentials during operation of the functional member are covered with an insulating material. Is. Specifically, the first feeding body 16 has foil-shaped conductors 36 and 36'inside the insulating material, and the second feeding body 17 has foil-shaped conductors 37 and 37'inside the insulating material, respectively. ing. The foil-like conductors 36 and 36'of the first feeding body 16 are arranged apart in the insulating material so that they are not electrically short-circuited. The foil-like conductors 37 and 37'of the second feeding body 17 are also arranged apart in the insulating material so that they do not electrically short-circuit.

The foil-shaped conductor 36'is arranged on the second feeding body 17 side, and the foil-shaped conductor 37'is arranged on the first feeding body 16 side. Therefore, the foil-shaped conductor 36'and the foil-shaped conductor 37'are the closest conductors in the first feeding body 16 and the second feeding body 17. The foil-shaped conductors 36, 36', 37, 37' are covered with an insulating material except for the end portion (contact point with the functional member). Regarding the foil-shaped conductor, the portion shown by the alternate long and short dash line in FIG. 1 represents the outline of the portion covered with the insulating material, and the portion indicated by the dotted line represents the outline of the portion not covered by the insulating material.

Further, according to the laminated glass 100 for vehicles according to the present embodiment, the first glass plate 10 and the second glass plate 18 can be configured to have no notch. When the first glass plate 10 and the second glass plate 18 have a structure having no notch, at least a step of notching the glass plate and a step of sealing the notch portion become unnecessary. However, the laminated glass 100 for a vehicle according to the present embodiment may be provided with a notch. The “notch” refers to a recess provided in a part of the peripheral edge of the first glass plate 10 or the second glass plate 18 in the plan view of the laminated glass 100 for a vehicle. The notch does not overlap the first glass plate 10 and the second glass plate 18 in the plan view of the first glass plate 10, and is adjacent to a part of the peripheral edge of the first glass plate 10. It can be said to be an area.

The first feeding body 16 and the second feeding body 17 are usually made of a flexible material. In the plan view of the first glass plate 10, when these feeding bodies overlap each other, the conductor portion of one feeding body may be damaged after the laminated glass 100 for a vehicle is assembled to the vehicle. May come into contact with the conductor portion of the other feeder and cause a short circuit. Therefore, the first feeding body 16 and the second feeding body 17 do not overlap in the plane of the first glass plate 10 in the plan view of the first glass plate 10, so that a short circuit can be prevented. It is preferable that the first feeding body 16 and the second feeding body 17 do not overlap even outside the plane of the first glass plate 10 in the plan view of the first glass plate 10.

Further, in the plan view of the first glass plate 10, the first feeding body 16 and the second feeding body 17 intersect only one side of the first glass plate 10 (hereinafter, also referred to as a feeding side). As a result, the wiring in the body frame of the vehicle taken out to the outside of the laminated glass 100 for the vehicle can be simplified, and the handling becomes easy. The position of the feeding side is not particularly limited, but for example, it may be the upper side or the lower side of the first glass plate 10, and the lower side (feeding side 10s) close to the power source mounted on the vehicle is preferable.

In the laminated glass 100 for vehicles shown in FIG. 1, the first feeding body 16 and the second feeding body 17 are from the lower side feeding side 10s to the first functional member 14 and the second functional member 15. , Arranged approximately parallel. However, a part of the first feeding body 16 and the second feeding body 17 may not be substantially parallel between the feeding side 10s and each functional member. For example, in FIG. 1, the first feeding body 16 may be electrically connected to the first functional member 14 via the vicinity of the side side and / or the vicinity of the upper side inside the laminated glass 100 for a vehicle. The second feeding body 17 may be electrically connected to the second functional member 15 via the vicinity of the side side and / or the vicinity of the upper side inside the laminated glass 100 for a vehicle.

In addition, substantially parallel means up to ± 20% with respect to the distance d1 between the _first feeding body 16 and the second feeding body 17 (hereinafter, also simply referred to as “distance between feeding bodies”) in the feeding side 10s. Allow changes in distance. The distance d ₁ between the feeding bodies refers to the distance from the end of the foil-shaped conductor 36'on the second feeding body side to the end of the foil-shaped conductor 37'on the first feeding body 16 side, and is along the feeding side 10s. Be measured.

The distance d ₁ between the feeding bodies is preferably 100 mm or less. When the distance d ₁ between the feeding bodies is 100 mm or less, it becomes easy to bundle the cables connected from the feeding body to the power supply mounted on the vehicle, and it is easy to bundle the cables, and each power is supplied from the branch point of the bundled cables. The distance to the body is shortened, and the cable is less likely to swing and move without being fixed to the body frame of the vehicle. Further, the distance d ₁ between the feeding bodies is more preferably 50 mm or less, and further preferably 35 mm or less. As described above, when these feeding bodies come out of the laminated glass 100 for vehicles from a single feeding side 10s, the first feeding body 16 and the second feeding body are viewed in plan view of the first glass plate 10. Compared with the arrangement in which the laminated glass 100 for a vehicle is exposed to the outside from the sides different from those of the 17th, the above-mentioned ease of bundling the cables and the effect of suppressing the shaking of the cables become remarkable.

Further, in order to protect the first functional member 14 (second functional member 15) from the physical impact, moisture and the like on the feeding side 10s, the first functional member 14 (second) from the feeding side 10s. The distance d ₂ in the plane direction (Y-axis direction) to the peripheral edge of the functional member 15) is larger than 0 mm, preferably 5 mm or more, and more preferably 10 mm or more. The peripheral edges of the first functional member 14 and the second functional member 15 are preferably separated from the peripheral edge of the first glass plate by 5 mm or more, and more preferably 20 mm or more.

Note that the laminated glass 100 for vehicles may be provided with a band-shaped light-shielding portion 50 on the peripheral edge portion as shown in FIG. The light-shielding portion 50 can completely or partially conceal the peripheral edges of the functional members 14 and 15, the feeding bodies 16 and 17, the attachment portion to the frame body of the vehicle, and the foam residue described later.

FIG. 2 is a cross-sectional view of the laminated glass 100 for a vehicle seen from the minus direction of the Y axis when the laminated glass 100 for a vehicle is cut at the position of X ₁ to X ₂ in FIG. 1 in the XZ plane (hereinafter, “X ₁ −”). X ₂ cross section "). In FIG. 2, the laminated glass 100 for a vehicle is laminated in the order of the first glass plate 10, the interlayer film 20, and the second glass plate 18. Then, the intermediate film 20 is laminated in the order of the first intermediate film 11, the first adjusting intermediate film 21, and the second intermediate film 12 from the first glass plate 10 side. Further, the first functional member 14 and the second functional member 15 are both sandwiched between the first intermediate film 11 and the second intermediate film 12, and are present on substantially the same plane. In FIG. 2, the first glass plate 10 has a first main surface 10a on the side opposite to the first interlayer film 11 side and a second main surface 10b on the first interlayer film 11 side. Has. The second glass plate 18 has a third main surface 18c on the side of the second interlayer film 12 and a fourth main surface 18d on the side opposite to the second interlayer film 12 side.

By the way, in the laminated glass 100 for vehicles, for example, unnecessary bubbles (hereinafter, "foam residue") in the laminated glass for vehicles due to a step generated at the peripheral edge of a functional member or a power feeding body at the time of laminating each member in a manufacturing process. ) May occur. Since the interlayer film 20 is deformed during the manufacturing process, foam residue may occur outside the vicinity of the step.

The foam residue in the laminated glass 100 for a vehicle reduces the adhesive force between the first glass plate 10 and the second glass plate 18 via the interlayer film 20, and may easily cause damage due to an external impact. be. Therefore, in the laminated glass 100 for vehicles, it is preferable that the area of the remaining foam portion is small in the plan view of the first glass plate 10. Further, when the laminated glass 100 is attached to the vehicle as a windshield, if the driver sees the remaining bubbles, it may hinder the operation. Therefore, at least in the laminated glass 100 for vehicles, it is preferable that the foam residue in the opening, which will be described later, is inconspicuous. Therefore, in the laminated glass 100 according to the present embodiment, in order to eliminate the step (gap) at the peripheral edge of the functional member and reduce the bubble residue, the laminated glass 100 is placed between the first interlayer film 11 and the second interlayer film 12. The first adjustment interlayer film 21 is provided.

That is, in the plan view of the laminated glass 100, the inner edge shape of the first adjustment interlayer film 21 is substantially the same as the peripheral shape of the first functional member 14 and the second functional member 15. Then, the first functional member 14 and the second functional member 15 are accommodated in the hollow portion inside the outer edge of the first adjusting interlayer film 21.

However, the first functional member 14 and the second functional member 15 do not necessarily have to fit in the two hollows of the first adjusting interlayer film 21, which exist independently of each other, and are independent of each other. A plurality of functional members may be accommodated in one (large) hollow. Further, at least a part of the peripheral edge of the first functional member 14 and the second functional member 15 may be in contact with the inner edge of the first adjusting interlayer film 21.

As described above, at least a part of the peripheral edges of the first functional member 14 and the second functional member 15 is in contact with the inner edge of the first adjustment interlayer film 21, so that in the contacting portions, each of them is formed at the time of laminating. A gap is less likely to be formed in the peripheral edge of the functional member, and the first glass plate 10 and the second glass plate 18 are easily brought into close contact with each other via the interlayer film 20. From the viewpoint of reducing foam residue, the ratio of the length in contact with the inner edge of the first adjusting interlayer film 21 among the lengths of the peripheral edges of the first functional member 14 and the second functional member 15 is 50% or more, respectively. Is preferable, 70% or more is more preferable, 90% or more is further preferable, and 100% is particularly preferable.

Further, in order to reduce foam residue, the distance d ₁ between the feeding bodies is preferably 50 mm or less, more preferably 45 mm or less, further preferably 35 mm or less, particularly preferably 25 mm or less, and most preferably 15 mm or less. Further, the distance d ₁ between the feeding bodies is preferably, for example, 2 mm or more. If the distance d ₁ between the feeding bodies is 2 mm or more, the feeding bodies are of each other even if the misalignment of the first functional member 14 and the second functional member 15 at the time of stacking and the mounting accuracy of the feeding bodies are taken into consideration. Duplicates are unlikely to occur. Therefore, it is easy to reduce the foam residue, and it is easy to reduce the cracking of the laminated glass 100 for vehicles at the time of crimping and on the market (after distribution). The distance d ₁ between the feeding bodies may be 3 mm or more, 4 mm or more, or 5 mm or more. On the other hand, the distance d ₂ from the feeding side 10s to the peripheral edge of the first functional member (second functional member) is preferably 65 mm or less, more preferably 60 mm or less, further preferably 40 mm or less, and particularly preferably 30 mm or less. It is preferably 20 mm or less, and most preferably 20 mm or less.

Under the high temperature and high pressure environment in the manufacturing process of the laminated glass 100 for vehicles, the laminated interlayer film 20 flows. The smaller the distance d ₂ , the higher the probability that the bubbles generated in the laminated glass 100 for the vehicle will reach the feeding body side 10s and disappear, and the remaining bubbles can be reduced.

FIG. 3 is a side view including the feeding side 10s of the laminated glass 100 for a vehicle. In the side view of the laminated glass 100 according to the present embodiment, the first feeding body 16 is sandwiched between the first interlayer film 11 and the first adjusting interlayer film 21, and the second feeding body 17 is. It is sandwiched between the second interlayer film 12 and the first adjustment interlayer film 21. By sandwiching the feeding bodies by the interlayer film 20 in this way, the laminated glass 100 for vehicles can firmly hold these feeding bodies.

In the laminated glass 100 for vehicles according to the present embodiment shown in FIG. 3, the first feeding body 16 is arranged on one main surface side of the first adjusting interlayer film 21, and the second feeding body 17 is The first adjustment interlayer film 21 is arranged on the other main surface (the main surface on the opposite side of the one surface) side, respectively. As described above, in the laminated glass 100 for vehicles according to the present embodiment, the first feeding body 16 and the second feeding body 17 are arranged on different main surfaces.

That is, the first functional member 14 and the second functional member 15 are present on substantially the same plane, but from the main surface of one glass plate (for example, the second main surface 10b of the first glass plate 10). The distance to the first feeding body 16 and the distance from the main surface (10b) of the glass plate to the second feeding body 17 are different. Under the high temperature and high pressure environment in the manufacturing process of the laminated glass 100 for vehicles, the laminated interlayer film 20 flows. Then, each of the interlayer films constituting the interlayer film 20 adheres to each other to reduce the area of the boundary surface and has an action of trying to make the thickness uniform. Therefore, by giving a difference between the distance from the main surface of one glass plate to the first feeding body 16 and the distance from the main surface of the glass plate to the second feeding body 17, the interlayer film 20 can be formed. It flows vigorously and easily fills every corner between the glass plates. As a result, foam residue is less likely to occur, and the adhesion between the glass plate and the interlayer film 20 is improved.

(Second Embodiment)
FIG. 4 is a side view including a feeding side 10s of the laminated glass 200 for a vehicle according to the second embodiment of the present invention. In this embodiment, the points different from the laminated glass 100 for vehicles according to the first embodiment will be described, and the description of the first embodiment will be referred to for other points.

In the present embodiment, the first feeding body 16 and the second feeding body 17 are arranged on one surface side of the first adjusting interlayer film 21 as shown in FIG. That is, the laminated glass 100 for a vehicle has the distance from the main surface of one glass plate (for example, the second main surface 10b of the first glass plate 10) to the first feeding body 16 and the main surface of the glass plate (for example). The distance from 10b) to the second feeding body 17 is substantially the same. In this case, the interlayer film 20 is provided with an auxiliary interlayer film 25 at least in a part between the first feeding body 16 and the second feeding body 17 (in the X-axis direction), whereby the foam residue can be reduced. Further, by providing the auxiliary interlayer film 25, the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market.

The auxiliary interlayer film 25 may be made of the same material as at least one of the first interlayer film 11, the second intermediate film 12, and the first adjustment interlayer film 21. Further, the auxiliary interlayer film 25 extends in the Y-axis direction from between the first feeding body 16 and the second feeding body 17, for example, between the first functional member 14 and the second functional member 15. You may be doing it. In this case, if the auxiliary interlayer film 25 is arranged at least in a part between the first functional member 14 and the second functional member 15 (in the X-axis direction), it is preferable from the viewpoint of the effect of reducing foam residue, and all of them. It is more preferable to be arranged in. Further, it is more preferable that the auxiliary intermediate film 25, the first intermediate film 11, the second intermediate film and the first adjusting intermediate film 21 are all made of the same material.

(Third Embodiment)
FIG. 5 is a side view including a feeding side 10s of the laminated glass 300 for a vehicle according to the third embodiment of the present invention. In FIG. 5, the outline of the first functional member 14 and the second functional member 15 is shown by a broken line, and the arrangement of the interlayer film 20, the functional members 14, 15 and the feeding bodies 16 and 17 is clarified. There is.

In the present embodiment, the laminated glass 300 for vehicles has an interlayer film 20, and the interlayer film 20 is laminated in the order of the first intermediate film 11, the third intermediate film 13, and the second intermediate film 12. Further, a third interlayer film 13 is arranged between the first functional member 14 and the second functional member 15 (in the Z direction). The first functional member 14 and the first feeding body 16 are sandwiched between the first intermediate film 11 and the third intermediate film 13, and the second functional member 14 and the second feeding body 16 are fed. The body 17 is sandwiched between the second interlayer film 12 and the third interlayer film 13.

As described above, in the present embodiment, the first functional member 14 and the first feeding body 16 and the second functional member 17 and the second feeding body 17 are separated by the third interlayer film 13. Has been done. The first functional member 14 and the second functional member 15 do not exist on the same plane. Similarly, the first feeding body 16 and the second feeding body 17 are not coplanar.

Therefore, the distance from the second main surface 10b of the first glass plate 10 to the first feeding body 16 and the distance from the second main surface 10b of the first glass plate 10 to the second feeding body 17 are different. .. Therefore, under the high temperature and high pressure environment in the manufacturing process of the laminated glass 300 for vehicles, the interlayer film 20 actively flows, and it becomes easy to fill every corner between the glass plates. As a result, foam residue is less likely to occur, and the adhesion between the glass plate and the interlayer film is improved.

The laminated glass 300 for vehicles according to the present embodiment may have a first adjusting interlayer film (not shown) between the first interlayer film 11 and the third interlayer film 13. In this case, the first adjusting interlayer film has a hollow having substantially the same shape as the outer edge shape of the first functional member 14 in the plan view of the laminated glass 100, and has the outer edge shape of the second functional member 15. It differs from the first embodiment in that it does not have substantially the same shape of hollowing out.

Further, a second adjusting interlayer film (not shown) may be provided between the second interlayer film 11 and the third intermediate film 13. At this time, the outer edge shape of the second adjusting interlayer film (not shown) has substantially the same shape as the first glass plate 10, and has a hollow having substantially the same shape as the outer edge shape of the second functional member 15. Then, the second functional member 15 fits in the hollow portion inside the outer edge of the second adjusting interlayer film. These adjusting interlayer films improve the adhesion to the first glass plate 10 and the second glass plate 18 at the peripheral edge of each functional member, and are effective in reducing foam residue. Further, by providing these adjusting interlayer films, the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market.

(Fourth Embodiment)
Hereinafter, the fourth embodiment of the present invention will be described with reference to FIGS. 6 to 8. FIG. 6 is a plan view showing a laminated glass for vehicles according to a fourth embodiment, and is also a plan view showing a laminated glass for vehicles according to a fifth embodiment to be described later. In this embodiment as well, the points different from the laminated glass 100 for vehicles according to the first embodiment will be described, and the description of the first embodiment will be referred to for other points.

In the laminated glass 400 for vehicles shown in FIG. 6, the entire surfaces of both the first functional member 14 and the second functional member 15 overlap in the plan view of the first glass plate 10. Both of the two functional members are present inside the peripheral edge of the first glass plate 10. The first functional member 14 and the second functional member 15 may have at least a part of the first glass plate 10 that overlaps with each other and does not overlap with each other in the plan view of the first glass plate 10.

In the laminated glass 400 for vehicles according to the present embodiment, the peripheral edges of the two functional members overlap in the plan view of the first glass plate 10. The laminated glass 400 for vehicles has the following configuration in order to reduce foam residue by preventing gaps from being formed in the peripheral edges of these functional members.

FIG. 7 is an X1 _- X2 cross _- sectional view of the laminated glass 400 for a vehicle according to the fourth embodiment. In FIG. 7, the interlayer film 20 is laminated in the order of the first intermediate film 11, the first adjusting intermediate film 21, the second adjusting intermediate film 22, and the second intermediate film 12 from the first glass plate 10 side. Will be done. Further, both the first functional member 14 and the second functional member 15 are sandwiched between the first interlayer film 11 and the second interlayer film 12, and do not exist on the same plane.

Then, as shown in FIG. 7, the laminated glass 400 for a vehicle has the first adjusting interlayer film 21 on the outside of the peripheral edge of the first functional member 14 and the first adjusting interlayer film 21 on the outside of the peripheral edge of the second functional member 15. Each of the two adjusting interlayer films 22 is provided. In the plan view of the first glass plate 10, the second adjusting interlayer film 22 has an outer edge shape substantially the same as the outer edge shape of the first glass plate 10 and a substantially same shape as the outer edge shape of the second functional member 15. Has an inner edge shape (hollow).

Further, when the outer edge shapes of the first functional member 14 and the second functional member 15 are substantially the same in the plan view of the first glass plate 10, the first adjusting interlayer film 21 is the first. It may be arranged outside the periphery of both the functional member 14 and the second functional member 15. In that case, the second adjustment interlayer film 22 may not be arranged, and only the first adjustment intermediate film 21 may be arranged. The laminated glass 400 for vehicles may have an adhesive (not shown) between the first functional member 14 and the second functional member 15 to reduce foam residue between the functional members. ..

As described above, in the laminated glass 400 for vehicles, the interlayer film 20 has a first adjusting interlayer film 21, or a first adjusting interlayer film 21 and a second adjusting interlayer film 22. Therefore, in the laminated glass 400 for vehicles, the interlayer film 20 and the first glass plate 10 and the second glass plate 18 are easily brought into close contact with each other at the peripheral edge of each functional member, and the foam residue can be reduced. By providing these adjusting interlayer films, the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market. Further, the effect of the first adjusting interlayer film 21 and the second adjusting interlayer film 22 is that the thickness of the first adjusting interlayer film 21, or the first functional member 14 and the second functional member 15 is sufficient. It is remarkable when it is 0.15 mm or more, and particularly remarkable when it is 0.18 m or more.

FIG. 8 is a side view including the feeding side 10s of the laminated glass 400 for a vehicle according to the fourth embodiment. As shown in FIG. 8, in the laminated glass 400 for vehicles, the first feeding body 16 and the second feeding body 17 are firmly held by the interlayer film 20. In the present embodiment, the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the second adjusting intermediate film 22, but is sandwiched between the first intermediate film 11 and the first adjusting intermediate film 21. May be done. In that case, the second feeding body 17 may be sandwiched between the first adjusting interlayer film 21 and the second adjusting interlayer film 22.

Also in this embodiment, the distance from one glass plate (for example, the second main surface 10b of the first glass plate 10) to the first feeding body 16 and the distance from the main surface (10b) of the glass plate to the first. Since the distances to the feeding bodies 17 of No. 2 are different, the interlayer film 20 actively flows under a high temperature and high pressure environment in the manufacturing process, and it becomes easy to fill every corner between the glass plates. As a result, the laminated glass 400 for vehicles is less likely to generate foam residue, and the adhesive force between the glass plate and the interlayer film 20 is also improved.

(Fifth Embodiment)
9 and 10, respectively, are a cross _- sectional view of X1 _- X2 of the laminated glass 500 for a vehicle according to the fifth embodiment of the present invention shown in FIG. 6, and a side view including a feeding body side 10s. As shown in FIG. 9, the interlayer film 20 of the laminated glass 500 for a vehicle has a third layer between the first functional member 14 and the second functional member 15 in the thickness direction (Z-axis direction). It differs from the fourth embodiment in that it has an interlayer film 13. Then, the first functional member 14 is sandwiched between the first intermediate film 11 and the third intermediate film 13, and the second functional member 15 is the second intermediate film 12 and the third intermediate film 13. It is sandwiched between and.

Further, as shown in FIG. 10, the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the third intermediate film 13, and the second feeding body 17 is sandwiched between the second adjusting intermediate film 22 and the second adjusting intermediate film 22. It is sandwiched between the second interlayer film 12 and the second interlayer film 12. However, although the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the second adjusting intermediate film 22, it may be sandwiched between the first intermediate film 11 and the first adjusting intermediate film 21. good. Further, the second feeding body 17 may be sandwiched between the third interlayer film 13 and the second adjusting interlayer film 22.

As described above, in the laminated glass 500 for vehicles in the present embodiment, the first functional member 14 and the first feeding body 16 and the second functional member 15 and the second feeding body 17 are the third. It is separated in the thickness direction by the interlayer film 13 of the above. Therefore, the first functional member 14 and the second functional member 15 do not exist on the same plane. Further, the first feeding body 16 and the second feeding body 17 also do not exist on the same plane.

Therefore, the distance from the second main surface 10b of the first glass plate 10 to the first feeding body 16 and the distance from the second main surface 10b of the first glass plate 10 to the second feeding body 17 are different. Therefore, under the high temperature and high pressure environment in the manufacturing process of the laminated glass 500 for vehicles, the interlayer film 20 actively flows, and it becomes easy to fill every corner between the glass plates. As a result, the laminated glass 500 for vehicles is less likely to generate foam residue, and the adhesive force between the glass plate and the interlayer film 20 is also improved.

Next, each component included in the laminated glass 100 to 500 for vehicles according to each embodiment of the present invention will be described in more detail. When representing each component, the reference numerals used in FIGS. 1 to 10 are used, but the reference numerals of the laminated glass for vehicles are omitted.

<Glass plate>
The first glass plate 10 and the second glass plate 18 may have a flat plate shape, at least one of them may be curved, or both may be curved. The first glass plate 10 and the second glass plate 18 may each have a single curved shape (cylindrical) having a single bending direction, or may have a compound shape curved in two orthogonal directions.

It is preferable that the radius of curvature of the first glass plate 10 is substantially the same as the radius of curvature of the second glass plate 18 (including the case where both are flat plates) or larger than the radius of curvature of the second glass plate 18. That is, the ratio of the minimum radius of curvature (r ₂ ) of the second glass plate 18 to the minimum radius of curvature (r ₁ ) of the first glass plate 10 is preferably 1 ≦ r ₁ / r ₂ .

r ₁ and r ₂ are preferably 500 mm or more, and more preferably 700 mm or more in order to reduce the occurrence of wrinkles and fluoroscopic distortion of the interlayer film 20. When the laminated glass for vehicles has a curved shape, the maximum radius of curvature (R ₁ ) of the first glass plate 10 and the maximum radius of curvature (R ₂ ) of the second glass plate 18 are 100,000 mm or less. It is preferably 50,000 mm or less, more preferably 30,000 mm or less, and particularly preferably 20,000 mm or less.

When a laminated glass for a vehicle having substantially the same r1 and r2 is attached to the vehicle, either the _first glass plate 10 or the _second glass plate 18 may be arranged inside the vehicle. _On the _other hand, when laminated glass for vehicles having different r1 and r2 is attached to the vehicle, the glass plate corresponding to the larger value of _r1 and r2 is arranged _on the outside of the vehicle in order to maintain the strength of the laminated glass. It is preferable to be done. For example, when r ₁ > r ₂ , the first glass plate 10 may be arranged on the outside of the vehicle, and the second glass plate 18 may be arranged on the inside of the vehicle.

As the first glass plate 10 and the second glass plate 18, conventionally known inorganic glass or organic glass used for the window glass of a vehicle can be used. The composition of the first glass plate 10 and the composition of the second glass plate 18 may be the same or different. Examples of the inorganic glass include ordinary soda lime glass, aluminosilicate glass, borosilicate glass, non-alkali glass, quartz glass and the like.

These glass plates are manufactured by any known method such as a float method, a fusion method, a rollout method, and a down draw method. Gravity molding, press molding, or the like is used for bending and molding of inorganic glass, and the glass plate is bent and molded at a high temperature. Further, the inorganic glass may be unreinforced glass obtained by molding molten glass into a plate shape and slowly cooling it, and may be subjected to strengthening treatment such as physical strengthening (for example, wind cooling strengthening) or chemical strengthening, if necessary. ..

Examples of organic glass include polycarbonate resin, acrylic resin, polystyrene resin, aromatic polyester resin, polyester resin, polyarylate resin, polycondensate of halogenated bisphenol A and ethylene glycol, acrylic urethane resin, and acrylic halide containing aryl halides. And so on. As the organic glass, a polycarbonate resin is preferable because a lightweight and flexible sheet can be obtained. In addition, 2 or more kinds of the said resin may be used together.

The first glass plate 10 and the second glass plate 18 are preferably soda lime glass or non-alkali glass, among the above-exemplified examples. Float glass is preferable for the first glass plate 10 and the second glass plate 18.

Both the inorganic glass and the organic glass are usually colorless, but they may be transparent and may be colored. In the case of colored glass, so-called privacy glass having a dark color such as gray may be used. The privacy glass has an effect of reducing the transmission of sunlight from the outside of the vehicle to the inside of the vehicle and an effect of improving the aesthetics from the inside and outside of the vehicle while making it difficult to see the inside of the vehicle from the outside of the vehicle. Privacy glass is preferably used for parts other than the windshield, particularly the roof, the side glass at the rear of the vehicle, the rear glass, the quarter glass, and the like. Further, the inorganic glass and the organic glass can contain an infrared ray shielding material, an ultraviolet ray shielding material and the like.

The thickness of the first glass plate 10 and the second glass plate 18 is appropriately selected depending on the type and portion of the vehicle on which the laminated glass for the vehicle is mounted, but is generally 0.1 mm to 10 mm, respectively. can. In order to keep the density (area density) per unit area determined by the mass and surface area of the laminated glass 100 for vehicles within a preferable range, the thickness of the first glass plate 10 and the second glass plate 18 is 0. It is preferably .3 mm to 2.6 mm. The thicknesses of the two glass plates 10 and 18 may be the same or different from each other.

When the thickness of the two glass plates 10 and 18 is different, when the laminated glass for the vehicle is attached to the vehicle, if the glass plate located on the outside of the vehicle is thicker than the glass plate located on the inside of the vehicle, it is resistant to the outside. It is preferable in terms of stepping stone impact resistance. In this case, in the laminated glass for vehicles, the difference between the thickness of the first glass plate 10 and the thickness of the second glass plate 18 is preferably 0.3 mm to 1.5 mm from the viewpoint of impact resistance against flying stones. More preferably, it is 0.3 mm to 1.3 mm.

When the laminated glass for a vehicle is attached to a vehicle, the thickness of the glass plate located on the outside of the vehicle is preferably 1.1 mm or more, more preferably 1.3 mm or more, further preferably 1.6 mm or more, and more preferably 1.8 mm or more. Especially preferable. The thickness of the glass plate located on the outside of the vehicle is preferably 2.6 mm or less, more preferably 2.1 mm or less.

On the other hand, when the laminated glass for a vehicle is attached to a vehicle, the thickness of the glass plate located inside the vehicle is preferably 0.3 mm or more, more preferably 0.5 mm or more, further preferably 0.7 mm or more, and further preferably 1.1 mm. The above is particularly preferable, and 1.6 mm or more is most preferable. The thickness of the glass plate located inside the vehicle is preferably 2.6 mm or less, more preferably 2.1 mm or less.

The two glass plates 10 and 18 have a coating film that imparts water-repellent function, hydrophilic function, anti-fog function, etc. laminated on at least one of the surfaces exposed to the atmosphere (first main surface 10a, fourth main surface 18d). May be done. Further, the two glass plates 10 and 18 usually include a metal layer such as a low-radiation coating, an infrared light-shielding coating, a conductive coating, etc. on the surfaces facing each other (second main surface 10b, third main surface 18c). The coating film may be laminated.

<Intermediate membrane>
As the interlayer film 20, those generally used for laminated glass can be used, and examples thereof include thermoplastic resins, thermosetting resins, and photocurable compositions, which can be formed by solidifying these resins. .. In addition, "solidification" here includes hardening.

The interlayer film 20 has various functions such as facilitation of adhesion between members, shock absorption, and sound insulation described later. From the viewpoint of adhesiveness, among the first intermediate film 11, the second intermediate film 12, the third intermediate film 13, the first adjusting intermediate film 21, the second adjusting intermediate film 22, and the auxiliary intermediate film 25. It is preferable that at least two or more of them are made of the same material, and it is more preferable that the interlayer film 20 is made of the same material.

The interlayer film 20 is provided with sound insulation by laminating layers having different glass transition points. As a laminated structure of three layers having sound insulation, for example, in the interlayer film 20, the layer at the intermediate position in the thickness direction is a core layer having a glass transition point of less than 15 ° C., and the core layer (intermediate layer) is sandwiched. The two layers may be a skin layer having a glass transition point of 15 ° C. or higher. As a laminated structure of five layers having sound insulation, for example, the interlayer film 20 may be configured to be laminated in the order of a skin layer, a core layer, a skin layer, a core layer, and a skin layer. In this case, the laminated glass for vehicles according to each embodiment has a sound insulating effect in addition to the effect of reducing foam residue.

As the thermoplastic resin, polyvinyl acetal resin such as polyvinyl butyral resin (PVB), polyvinyl chloride resin (PVC), saturated polyester resin, polyurethane resin, ethylene-vinyl acetate copolymer resin (EVA), ethylene-ethyl acrylate copolymerization Systematic resins, cycloolefin polymers (COP) and the like can be mentioned. The thermoplastic resin used for the interlayer film 20 is preferably PVB, EVA, polyurethane resin or the like. These thermoplastic resins may be used alone or in combination of two or more. The thermosetting resin is typically a silicone-based resin or an acrylic-based resin.

The photocurable composition typically contains a curable compound (A) having a curable group and a photopolymerization initiator (B). The photocurable composition may contain a non-curable component other than the photopolymerization initiator (B), if necessary. Examples of the non-curable component include a non-curable polymer (C), a chain transfer agent (D), and other additives.

Examples of the curable compound (A) include acrylic, silicone, urethane acrylate, and epoxy compounds. Among them, the curable compound (A) is preferably a silicone-based compound or a urethane acrylate-based compound because the storage elastic modulus G'can be easily adjusted to 5 × 10 ² Pa to 1 × 10 ⁷ Pa. Further, the curable compound (A) is more preferably urethane acrylate type in that the gel fraction can be easily adjusted to 1% to 50%. When a photocurable resin is used for the interlayer film 20, heating is not required in the crimping process, so that the laminated glass does not have a possibility of cracking or warping due to heating.

The interlayer film 20 may use one of these resins alone or in combination. For example, in order to secure the rigidity and sound insulation of the laminated glass for vehicles, materials having different properties at the central portion and the peripheral portion of the laminated glass for vehicles may be used. For example, the peripheral portion of the laminated glass for a vehicle is a region in which the first adjusting interlayer film 21 and the second adjusting interlayer film 22 are arranged in a plan view of the first glass plate 10, and the central portion is an outer peripheral portion. It may be an area inside the area.

The interlayer film 20 contains any one of a thermoplastic resin, a thermosetting resin, and a photocurable composition as a main component. The interlayer film 20 is an infrared absorber, an ultraviolet absorber, a colorant, a fluorescent agent, an adhesive adjuster, a coupling agent, a surfactant, an antioxidant, a heat stabilizer, a light stabilizer, a dehydrating agent, and a defoaming agent. , Antistatic agent, flame retardant and other various additives can be contained in one or more. The colored layer made of a colorant can be used as a so-called shade band layer that reduces the glare of a vehicle occupant due to sunlight. The shade band layer may be provided in a band shape along the upper side thereof, for example, when the laminated glass for a vehicle is attached to the vehicle.

The total thickness of the interlayer film may be 0.1 mm to 3.1 mm from the viewpoint of ensuring handleability. The thickness per interlayer film is preferably 0.3 mm to 3.0 mm from the viewpoint of ensuring penetration resistance, and more preferably 0.3 mm to 1.2 mm due to the weight limitation of the laminated glass, and more preferably 0.3 mm to 1.2 mm. 0.8 mm is particularly preferable. The thickness of each interlayer film may be the same or different.

<Functional member>
Hereinafter, the first functional member 14 and the second functional member 15 are collectively referred to simply as "functional members". The functional member is a layer in which electric power is supplied from a power source by a power feeding body to drive electric power. The electric power driven functional member may be a dimming layer, a light emitting layer, an electric heating layer, or the like. As for the functional member, it is sufficient that the electric power driven portion constitutes a flat surface as a whole. On the other hand, for example, the infrared light-shielding coating film and the resin film that emits light by ultraviolet rays, which are arranged between the first glass plate 10 and the second glass plate 18, form a flat surface as a whole, but are electric power. Since it is not driven, it is not included in the functional members.

The first functional member 14 and the second functional member 15 may be layers having the same function or layers having different functions. For example, the first functional member 14 may be a light control layer, the second functional member 15 may be a light emitting layer, the first functional member 14 may be a light emitting layer, and the second functional member 15 may be an electric heating layer. , The first functional member 14 and the second functional member 15 may both be a dimming layer. These combinations are merely examples, and the combination of functional members can be arbitrarily selected.

The dimming layer may have a function of changing the visible light transmittance by electric power drive, and may change the color. Examples of the light control layer include an electrochromic (EC) film, a liquid crystal (LC) film, a suspended particle device (SPD) film, an electrokinetic (EK) film, and the like. The dimming layer can also be used as a shade band.

The light emitting layer may contain a material that emits light by power driving. For example, a cold cathode fluorescent lamp (CCFL), a light emitting diode (LED), an organic light emitting diode (OLED), a laser, a display using these, or the like may be used. Can be mentioned. The light emitting layer can also be used as a display for indicating a direction or calling attention.

The electric heating layer may include a layer that generates heat by being driven by electric power, and may contain at least one of a metal, a metal oxide, and a conductive polymer. The electric heating layer may have any shape, and examples thereof include a thin film shape and a fine wire shape. Further, the heating layer may be specifically a heating film for preventing fogging, a heating wire for melting ice, or the like.

<Power supply body and foil-like conductor>
In the first feeding body 16, the direction in which the foil-shaped conductors 36 and 36'is separated from each other may be the thickness direction of the laminated glass for vehicles. However, in this case, since the thickness of the first feeding body 16 may increase and foam residue after encapsulation in the interlayer film 20 may easily occur, the direction in which the first feeding body 16 is separated from each other is preferably the plane direction. This also applies to the foil-shaped conductors 37 and 37'in the second feeding body 17.

Further, the foil-shaped conductor 36'and the foil-shaped conductor 37'may be conductors driven at the same potential. Specifically, if the foil-shaped conductor 36'and the foil-shaped conductor 37' are grounded, they will not short-circuit even if they come into contact with each other, and damage to the functional member can be prevented.

The insulating material may be a thermosetting resin or a thermoplastic resin. Examples of the insulating material include polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polybutylene terephthalate (PBT), polyamide resins such as nylon 6, nylon 66 and nylon 610, polyimides and polyamideimides. Polycarbonate resin such as polyetherimide, fluororesin, polyether sulfone, polyether ketone, polyether sulfide, polyarylate, polyester ether, total aromatic polyamide, polyaramid, polypropylene (PP), polycarbonate (PC), liquid crystal polymer Etc. may be used.

Among these resins, a polyimide resin such as polyimide that can withstand high temperature and high pressure conditions at the time of manufacturing laminated glass for vehicles can be preferably used as the insulating material. However, the resin used as the insulating material is not particularly limited as long as it is a material having insulating properties, flexibility, and heat resistance. As the material constituting the foil-shaped conductors 36, 36', 37, 37', for example, a metal such as gold, silver, or copper is preferable, and copper is more preferable. Further, the material may use carbon instead of metal. The foil-like conductors may be made of the same material or different materials.

The thickness of the foil-like conductor depends on the type of functional member, but in order to correspond to the functional member used for laminated glass for vehicles, the width of the feeding body becomes wider if it is 0.01 mm or more per layer. Not too much, it is preferable in handling, 0.05 mm or more is more preferable, and 0.07 mm or more is further preferable. Further, the thickness of the foil-like conductor is preferably 0.6 mm or less per layer because the feeding body does not become excessively thick, more preferably 0.4 mm or less, further preferably 0.2 mm or less, and 0.1 mm or less. Especially preferable.

The thickness of the feeding body is preferably 0.1 mm or more in the portion including the foil-like conductor because it is difficult to break the wire even when exposed to the vibration of the vehicle, and more preferably 0.15 mm or more, 0.2 mm or more. Is even more preferable. Further, the thickness of the feeding body is preferably 0.8 mm or less in the portion including the foil-like conductor because the influence of the step can be suppressed by the auxiliary interlayer film or the like, more preferably 0.6 mm or less, and 0.4 mm or less. The following is more preferable, and 0.3 mm or less is particularly preferable.

The thickness of the feeding body is preferably 0.08 mm or more in the portion not including the foil-like conductor because it is difficult to break the wire, more preferably 0.1 mm or more, still more preferably 0.12 mm or more. The upper limit of the thickness of the feeding body in the portion not including the foil-shaped conductor may be generally equal to or less than the thickness of the portion including the foil-shaped conductor.

<Shading part>
The laminated glass for vehicles has, for example, a light-shielding portion 50 having a width overlapping at least a part of the peripheral edges of the first functional member 14 and the second functional member 15 from the feeding side 10s toward the central portion. You may. When the width of the light-shielding portion 50 is 5 mm or more inward from the peripheral edge of the first functional member 14 or the second functional member 15, the peripheral edge of the functional member can be effectively concealed, which is preferable.

When the laminated glass for a vehicle has a light-shielding portion 50, the laminated glass for a vehicle is a portion that overlaps with the first glass plate 10 and does not have the light-shielding portion 50 in the plan view of the first glass plate 10. It has an opening to ensure the driver's view. The width of the light-shielding portion 50 is preferably 50 mm or less, more preferably 30 mm or less, and more preferably 20 mm or less inward from the peripheral edge of the first functional member 14 or the second functional member 15 in order to secure the area of the opening. Is particularly preferable.

Examples of the material constituting the light-shielding portion 50 include organic ink, inorganic ceramics, and a colored interlayer film. The light-shielding portion 50 can be formed by, for example, applying organic ink or inorganic ceramics on a glass surface by screen printing or the like and drying the light-shielding portion 50. The color of the light-shielding portion 50 may be any color as long as it can block visible light to the extent that it can be concealed, at least in the portion where concealment is required, but dark colors such as black, brown, gray, and navy blue are preferable, and black is preferable. More preferred. Hereinafter, as an example, an example in which the light-shielding portion 50 is composed of a ceramic layer on a glass surface is shown.

The ceramic layer constituting the light-shielding portion 50 may be provided on at least one of the second main surface 10b and the fourth main surface 18d, for example. The light-shielding portion 50 provided on the second main surface 10b contributes to the concealing property when viewed from the outside of the vehicle, and the light-shielding portion 50 provided on the fourth main surface 18d contributes to the concealing property when viewed from the inside of the vehicle. By providing the ceramic layer on the second main surface 10b and the fourth main surface 18d, the ceramic layer is excellent in concealment from the inside and outside of the vehicle and is suitable.

Next, the method for manufacturing a laminated glass for a vehicle according to the present invention will be described by taking the laminated glass 100 for a vehicle as an example.
<Manufacturing method of laminated glass for vehicles>
A method for manufacturing a laminated glass 100 for a vehicle in which a first glass plate 10, an interlayer film 20, and a second glass plate 18 are laminated in this order includes (1) a laminating step and (2) a first crimping step. After going through the step (1), the process proceeds to the step (2). Further, the manufacturing method may include (3) a second crimping step after passing through the first crimping step of (2).

(1) Laminating Step In the laminating step, the first glass plate 10, the interlayer film 20, the first functional member 14 to which the first feeding body 16 is connected, and the second feeding body 17 to which the first feeding body 17 is connected are connected. This is a step of preparing a laminate having the functional member 15 and the second glass plate 18.

The interlayer film 20 has a first intermediate film 11 and a second intermediate film 12. Then, in the laminating step, specifically, the first functional member 14 to which the first feeding body 16 is connected and the second functional member 15 to which the second feeding body 17 is connected are connected. This is a step of arranging the first interlayer film 11 and the second interlayer film 12 so as to be located between the first interlayer film 11 and the second interlayer film 12. In the laminating step, it is preferable that the peripheral edges of the first functional member 14 and the second functional member 15 are arranged so as to be inside the peripheral edge of the first glass plate 10.

In the laminating step, a laminated body is prepared so that the laminated glass 100 for vehicles shown in FIGS. 1 to 3 can be obtained when the first crimping step of (2) and the second crimping step of (3) described later are performed. It can be said to be a process. In any case, in the plan view of the first glass plate 10, at least a part of the first feeding body 16 and the second feeding body 17 is only the feeding side 10s which is one side of the first glass plate 10. The first feeding body 16 and the second feeding body 17 intersect each other and do not overlap in the plane of the first glass plate 10.

In the plan view of the first glass plate 10, the inventors have described the first crimping step (2) in the first crimping step of (2) and the portion described later in the portion where the laminated body overlaps with the feeding body and the portion where the laminated body does not overlap with the feeding body. Attention was paid to the change in the thickness of the interlayer film 20 and the feeding body in the second crimping step (3) and the like. Then, as a result of diligent studies, the inventors have found the following equations (1) and (2) using a value of 0.8 as a weighting. (1) In the laminating step, the foam residue of the laminated glass 100 for a vehicle can be reduced by satisfying the equation (1) in the side view including the feeding side 10s of the first glass plate 10. Further, by satisfying the formula (2) at the same time, the foam residue can be further reduced, which is preferable.

Equation (1): _ti ≧ 0.8 × (t _F1 + _ti F1)
ti: Thickness of the interlayer film between the first feeding body and the second feeding body in the plane direction (X-axis direction) t _F1 : Thickness of the thickest portion of the first feeding body _{ti F1} : First Thickness of interlayer film in the portion overlapping with the feeder Equation (2): _ti ≧ 0.8 × (t _F2 + _ti F2)
t _F2 : Thickness of the thickest part of the second feeding body t _iF2 : Thickness of the interlayer film in the part overlapping with the second feeding body

Further, in the laminating step (1), the first glass plate 10, the interlayer film 20, and the second glass plate 10 are satisfied by satisfying the equation (3) in the side view including the feeding side 10s of the first glass plate 10. It is possible to manufacture a laminated glass 100 for a vehicle in which the glass plate 18 of the above is sufficiently adhered. Further, by satisfying the formula (4) at the same time, the laminated glass 100 for a vehicle can be more preferably manufactured.
Equation (3): 1.2 × (t _F1 + _ti F1) ≧ _ti
Equation (4): 1.2 × (t _F2 + _ti F2) ≧ _ti

11 (a) to 11 (c) are side views including the feeding side 10s of the first glass plate 10 of the laminated body. FIG. 11A shows a portion where the laminated body overlaps with the first feeding body 16, a portion where the laminated body overlaps with the second feeding body 17, and a laminated body in a plan view of the first glass plate 10. Excerpts shown in FIG. 11B are shown by broken lines in the portion between the first feeding body 16 and the second feeding body 17 in the plane direction (X-axis direction). 11 (b) shows an excerpt of the broken line portion of FIG. 11 (a). 11 (c) is an enlarged view of the vicinity of the first feeding body 16 and the second feeding body 17 of FIGS. 11 (a) and 11 (b). The thickness of each member in the above formulas (1) and (2) will be described with reference to FIGS. 11 (b) and 11 (c).

_{ti, tiF1, and tiF2 are the} (total) thicknesses of the interlayer film 20 in each portion shown in FIG. 11 (a). In FIG. 11A, the interlayer film 20 has a first intermediate film 11, a first adjustment intermediate film 21, and a second intermediate film 12 in any portion. Therefore, when the thickness of the first interlayer film 11 is t ₁ , the thickness of the first adjustment interlayer film 21 is t ₂ , and the thickness of the second interlayer film 12 is t ₃ , then _ti and t _iF1 , T _iF2 all represent the sum of t ₁ to t ₃ . When the interlayer film 20 has a third intermediate film 13, an adjusting intermediate film, an auxiliary intermediate film 25, and the like, the thickness thereof is also included. Note that t _F1 and t _F2 represent the thickness of the thickest portion of the first feeding body 16 and the second feeding body 17. The thickest portion is, for example, a portion of the feeding bodies 16 and 17 shown in FIG. 11C including the foil-shaped conductors 36, 26', 37, 37'.

(2) First crimping step The first crimping step is a step of heating and pressurizing a first glass plate and a second glass plate to crimp. In the first crimping step, the laminated body obtained in the laminated step is put into a vacuum bag, for example, sandwiched between a pair of nip rollers, or the peripheral portion is covered with a rubber channel, and the laminated body is pressurized and heated to bond. It may be a process of performing. The first crimping step can be performed by controlling the temperature at usually 50 ° C. to 130 ° C. The absolute pressure when the vacuum bag is used is preferably 36 kPa to 1 kPa.

(3) Second crimping step If necessary, after the first crimping step, there may be a second crimping step in which the laminated body obtained in the laminating step is crimped more firmly. The second crimping step can be performed by putting the laminate in an autoclave, for example, controlling the temperature at 110 ° C. to 150 ° C., and holding the absolute pressure at 0.98 MPa to 1.47 MPa for a predetermined time. The second crimping step is preferably kept at a higher temperature and pressure than the first crimping step.

Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.
<Example 1>
The first embodiment is an example corresponding to the laminated glass 500 for a vehicle of the fifth embodiment. As the first glass plate and the second glass plate, light green glass (300 mm × 300 mm, thickness 2 mm) normally used as vehicle glass is used as the first to third interlayer films and the first and second adjustments. Polyvinyl butyral (PVB) film (Sekisui Chemical Co., Ltd., thickness 0.38 mm) is used as the interlayer film, and suspended particle device (SPD) (Hitachi Kasei Co., Ltd.) is used for the first and second functional members. , Thickness 0.34 mm) was used. The size of the first to third interlayer films is 300 mm × 300 mm. As shown in Table 1, the first and second adjusting interlayer films have a hollow according to the size of the first and second functional members, and the portion other than the hollow portion has a predetermined width. There is.

The first and second feeders (0.13 mm at the thinnest part, 0.24 mm at the thickest part) are made of tin-coated copper foil (thickness 0.1 mm) and polyimide (thickness 0.1 mm) via an epoxy adhesive. It is coated (thickness 0.13 mm, width 360 mm).

The laminated glass for vehicles according to Example 1 was obtained through a laminating step, a first crimping step, and a second crimping step. In the laminating step, a second interlayer film, a second adjusting interlayer film, a second functional member to which a second feeding body is electrically connected, and a third interlayer film are placed on the second glass plate. , The first adjusting interlayer film, the first functional member to which the first feeding body is electrically connected, the first interlayer film, and the first glass plate are laminated in this order from the lower layers of FIGS. 9 and 10. did. Then, ti = _tiF1 = _tiF2 = 1.9 mm and _tF1 = _tF2 = 0.24 mm, and the above formulas (1) and ( ₂ ) were satisfied.

[evaluation]
Regarding the laminated glass for vehicles after the second crimping step, the presence or absence of bubbles was confirmed in the plan view of the first glass plate in the following regions (a) and (b). When one or more bubbles having a diameter of 1 mm or more were confirmed, it was considered that there was a bubble residue. Region (a): 20 mm or more inside from the peripheral edge of the first functional member (second functional member), region (b): between the first feeding body and the second feeding body.

Then, as shown in Table 2, it was evaluated as excellent (very good), good (good), acceptable (fair), and rejected (bad) in order from the most excellent one, depending on the presence or absence of foam residue. The results are shown in Table 3.

In the first embodiment, the distance d ₁ between the first feeding body and the second feeding body is 45 mm or less and / or from the feeding side to the peripheral edge of the first functional member (second functional member). When the distance d ₂ is 60 mm or less, it was confirmed that no foam residue was generated in the region (a) and the region (b) after the second crimping step.

[Bake test]
The laminated glass for vehicles according to the present invention is also expected to be used in a high temperature environment for a long period of time. In a high temperature environment, the compressed and melted air expands, and there is a possibility that larger foam (foam residue) than in the stage after the second crimping process or new foam residue that was not confirmed after the second crimping process may occur. be. Therefore, in Example 1, a test was conducted in which the laminated glass for a vehicle after the second crimping step was allowed to stand in an oven, controlled at 100 ° C to 130 ° C, and heated for 2 hours to accelerate firing.

In the first embodiment, when the distance d ₁ between the feeding bodies is 45 mm or less, or the distance d ₂ is 60 mm or less, the inside of the peripheral edge of the first functional member (second functional member) is 20 mm or more even after the bake test. , Or it was confirmed that no foam residue was generated between the first feeding body and the second feeding body.

100, 200, 300, 400, 500 Laminated glass 10 First glass plate 10a First main surface 10b Second main surface 10s Feeding side G Center of gravity 11 First interlayer film 12 Second interlayer film 13 Third interlayer film 14 First functional member 15 Second functional member 16 First feeding body 17 Second feeding body d ₁ Distance between feeding bodies d ₂ Distance from the feeding side to the peripheral edge of the functional member 18 Second glass Plate 18c 3rd main surface 18d 4th main surface 20 Intermediate film 21 1st adjustment intermediate film 22 2nd adjustment intermediate film 23 3rd adjustment interlayer film 25 Auxiliary interlayer film 36, 36', 37, 37'Foil-like Conductor 50 Light-shielding section The specification of Japanese Patent Application No. 2020-147753 filed on September 2, 2020, the scope of claims, the drawings and the abstract are all cited here and the specification of the present invention. It is incorporated as a disclosure of the book.

Claims (15)

1. The first glass plate, the interlayer film, and the second glass plate are laminated in this order, which is a laminated glass for vehicles.
   The interlayer film has a first interlayer film and a second interlayer film, and has a first interlayer film and a second interlayer film.
   A first feeding body electrically connected to a first functional member, a second functional member, and the first functional member between the first interlayer film and the second interlayer film. , And a second feeder, which is electrically connected to the second functional member.
   In the plan view of the first glass plate,
   The first functional member and the second functional member are arranged inside the peripheral edge of the first glass plate.
   The first feeding body and the second feeding body are characterized in that they intersect only the feeding side which is one side of the first glass plate and do not overlap in the plane of the first glass plate. Laminated glass for vehicles.
2. The interlayer film comprises a first conditioning interlayer film and comprises a first conditioning interlayer film.
   The laminated glass for vehicles according to claim 1, wherein the first adjusting interlayer film is arranged on the peripheral edge of the first functional member.
3. The laminated glass for vehicles according to claim 2, wherein the first adjusting interlayer film is arranged on the peripheral edge of the second functional member.
4. The first glass plate has a first main surface and has a first main surface.
   In a cross-sectional view including the feeding side of the first glass plate,
   The distance from the first main surface to the first feeding body and the distance from the first main surface to the second feeding body are substantially the same.
   The interlayer film contains an auxiliary interlayer film and contains an auxiliary interlayer film.
   The laminated glass for a vehicle according to any one of claims 1 to 3, wherein the auxiliary interlayer film is arranged between the first feeding body and the second feeding body.
5. The interlayer film comprises a second conditioning interlayer film.
   The laminated glass for vehicles according to any one of claims 1 to 4, wherein the second adjusting interlayer film is arranged on the peripheral edge of the second functional member.
6. In the plan view of the first glass plate,
   The laminated glass for a vehicle according to any one of claims 1 to 5, wherein the first functional member and the second functional member overlap at least a part thereof.
7. The interlayer film contains a third interlayer film and contains a third interlayer film.
   The third interlayer film is arranged between the first interlayer film and the second interlayer film.
   The first functional member is arranged on one main surface side of the third interlayer film.
   The laminated glass for vehicles according to any one of claims 1 to 6, wherein the second functional member is arranged on the other main surface side of the third interlayer film.
8. The first glass plate has a first main surface and has a first main surface.
   In a cross-sectional view including the feeding side of the first glass plate,
   The vehicle according to any one of claims 1 to 7, wherein the distance from the first main surface to the first feeding body and the distance from the first main surface to the second feeding body are different. Laminated glass.
9. In the plan view of the first glass plate,
   The laminated glass for a vehicle according to any one of claims 1 to 8, wherein the distance d ₁ between the first feeding body and the feeding body of the second feeding body is 100 mm or less.
10. The laminated glass for a vehicle according to any one of claims 1 to 9, wherein the distance d ₂ between the feeding side and the peripheral edge of the first functional member is 65 mm or less.
11. It has a light-shielding portion from the feeding side of the first glass plate toward the first functional member.
    The laminated glass for vehicles according to any one of claims 1 to 10, wherein the light-shielding portion overlaps with at least a part of the peripheral edge of the first functional member.
12. The first glass plate has a substantially trapezoidal shape.
    The laminated glass for a vehicle according to any one of claims 1 to 11, wherein the feeding side is the longest side or the second longest side of the first glass plate.
13. The laminated glass for a vehicle according to any one of claims 1 to 12, wherein the first glass plate and the second glass plate do not have a notch.
14. A method for manufacturing a laminated glass for a vehicle in which a first glass plate, an interlayer film, and a second glass plate are laminated in this order.
    The first glass plate, the interlayer film, the first functional member to which the first feeding body is connected, the second functional member to which the second feeding body is connected, and the second glass plate. And the laminating process to prepare the laminating body with
    It has a first crimping step of heating and pressurizing the laminate to crimp.
    The interlayer film has a first interlayer film and a second interlayer film, and has a first interlayer film and a second interlayer film.
    In the laminating step, the first functional member to which the first feeding body is electrically connected and the second functional member to which the second feeding body is electrically connected are connected to each other. It is located between the first interlayer film and the second interlayer film, and in the plan view of the first glass plate, the first feeding body and the second feeding body are the first feeding body. It includes a step of arranging the first feeding body and the second feeding body so as not to overlap in the plane of the first glass plate while intersecting only the feeding side which is one side of the glass plate. ,
    The laminating step is a method for manufacturing a laminated glass for a vehicle, which comprises satisfying the following formulas (1) and (2) in a cross-sectional view including the feeding side of the first glass plate.
    Equation (1): _ti ≧ 0.8 × (t _F1 + _ti F1)
    Equation (2): _ti ≧ 0.8 × (t _F2 + _ti F2)
    ti: Thickness of the interlayer film between the first feeding body and the second feeding body in the plane direction t _F1 : _{Thickness of the thickest portion of the first feeding body t F2 :} The second Thickness of the thickest portion of the feeding body _tiF1 : Thickness of the interlayer film in the portion overlapping with the first feeding body _tiF2 : Thickness of the interlayer film in the portion overlapping with the second feeding body
15. The method for manufacturing a laminated glass for a vehicle according to claim 14, further comprising a second crimping step after the first crimping step.

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