CN113784935B

CN113784935B - Glass structure for vehicle, adhesive structure, and laminated glass

Info

Publication number: CN113784935B
Application number: CN202080033720.1A
Authority: CN
Inventors: 小嶌信贵; 佐瀬正行
Original assignee: Asahi Glass Co Ltd
Current assignee: AGC Inc
Priority date: 2019-05-13
Filing date: 2020-05-01
Publication date: 2023-12-19
Anticipated expiration: 2040-05-01
Also published as: JPWO2020230679A1; CN113784935A; WO2020230679A1; JP7487736B2

Abstract

The glass structure for a vehicle is provided with a glass plate and a foil-shaped connecting member which is arranged on a main surface of the glass plate and is electrically connected to an electric conductor arranged on or near the glass plate, wherein the foil-shaped connecting member is bonded to a member to be bonded which is arranged to face at least a part of the glass plate or the main surface of the glass plate by an adhesive material which is arranged to overlap at least a part of an edge portion of the foil-shaped connecting member, and the edge portion of the connecting member has a concave portion and/or a convex portion in a plan view.

Description

Glass structure for vehicle, adhesive structure, and laminated glass

Technical Field

The present invention relates to a glass structure for a vehicle, an adhesive structure, and a laminated glass.

Background

Conventionally, a configuration is known in which an electrical device such as an antenna and a defogger is provided on a window glass for a vehicle or the like. In order to supply power to such electric devices, foil-like (or flat) connection members disposed on a glass plate for a vehicle are often used.

For example, patent document 1 discloses a structure including a glass plate 4, an antenna structure 5 provided inside the glass plate 4, and a flat conductor 2 disposed on one surface of the glass plate 4, which extends from an end surface of the glass plate 4 and is folded back at an end of the glass plate 4 (fig. 1A and the like of patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2014-514836

Disclosure of Invention

Technical problem to be solved by the invention

In the structure disclosed in patent document 1, the flat conductor 2 is thin but has a thickness, and thus there is a step on the surface of the glass plate 4 on which the flat conductor 2 is disposed. Therefore, when the glass plate 4 is bonded to the member to be bonded with the flat conductor 2 interposed therebetween by the adhesive material, there is a possibility that the adhesive material may not be in close contact with the portions of the level difference (particularly, the edge portions of the flat conductor 2) depending on the type of the adhesive material or the like, and a gap may be formed. Therefore, there is a possibility that the air tightness and water tightness of the resulting bonded structure may be impaired.

For example, in patent document 1, the flat conductor 2 is arranged along the outer surface of the glass plate 4 (the outer surface of the first glass plate 4.1), and thus a step is formed at this portion. Therefore, in the case where the glass plate 4 is bonded to the metal frame 8 with the flat conductor 2 interposed therebetween by the adhesive joint portion 13, there is a possibility that sufficiently tight bonding cannot be achieved. Further, since the flat conductor 2 is disposed on the inner surface of the first glass plate 4.1, a step is formed also in this portion. Therefore, in the case where the first glass plate 4.1 is bonded to the second glass plate 4.2 through the thermoplastic bonding layer 4.3, there is a possibility that a sufficiently tight bond cannot be formed.

In view of the above-described problems, an object of one aspect of the present invention is to provide a glass structure for a vehicle that can form a tighter bond when bonded to a member to be bonded by an adhesive material.

Technical proposal adopted for solving the technical problems

In order to solve the above-described problems, a vehicle glass structure according to one aspect of the present invention includes a glass plate, and a foil-shaped connecting member disposed on a main surface of the glass plate and electrically connected to an electrical conductor disposed on or near the glass plate, wherein the foil-shaped connecting member is bonded to a member to be bonded disposed so as to face at least a part of the glass plate or the main surface of the glass plate by an adhesive material disposed so as to overlap at least a part of an edge portion of the foil-shaped connecting member, and the edge portion of the foil-shaped connecting member has a concave portion and/or a convex portion in a plan view.

Effects of the invention

According to one aspect of the present invention, a glass structure for a vehicle that can form a tighter bond when bonded to a member to be bonded by an adhesive material can be provided.

Brief description of the drawings

Fig. 1A is a plan view showing a state in which a glass structure according to a first embodiment of the present invention is attached to an adherend.

Fig. 1B is a partial enlarged view of a portion I of fig. 1A.

FIG. 1C is a cross-sectional view taken along line II-II of FIG. 1A.

Fig. 1D is a cross-sectional view taken along line III-III of fig. 1C.

Fig. 2 is a diagram illustrating a function of the foil-shaped connecting member according to the embodiment of the present invention.

Fig. 3A is a cross-sectional view of a modification of the glass structure according to the first embodiment of the present invention.

Fig. 3B is a cross-sectional view taken along line IV-IV of fig. 3A.

Fig. 3C is a cross-sectional view corresponding to fig. 3B of a modification of the glass structure according to the first embodiment of the present invention.

Fig. 3D is a cross-sectional view corresponding to fig. 3B of a modification of the glass structure according to the first embodiment of the present invention.

Fig. 3E is a cross-sectional view corresponding to fig. 3B of a modification of the glass structure according to the first embodiment of the present invention.

Fig. 4 is a diagram illustrating a top view of a foil-like connection member according to an embodiment of the present invention.

Fig. 5 is a diagram illustrating a top view of a foil-like connection member according to an embodiment of the present invention.

Fig. 6 is a diagram illustrating a top view of a foil-like connection member according to an embodiment of the present invention.

Fig. 7A is a plan view showing a state in which a glass structure according to a second embodiment of the present invention is attached to an adherend.

Fig. 7B is an enlarged view of a portion i of fig. 7A.

Fig. 7C is a cross-sectional view taken along line ii-ii of fig. 7A.

Fig. 7D is a cross-sectional view taken along line iii-iii of fig. 7C.

Fig. 8A is a cross-sectional view of a modification of the glass structure according to the second embodiment of the present invention.

Fig. 8B is a cross-sectional view taken along line iv-iv of fig. 8A.

Fig. 9A is a cross-sectional view of a modification of the glass structure according to the second embodiment of the present invention.

Fig. 9B is a v-v sectional view of fig. 9A.

Fig. 10 is a view showing a foil-like connection member used in the embodiment.

Fig. 11 is a diagram illustrating experimental steps in the embodiment.

Detailed Description

Hereinafter, embodiments of the present invention will be described. In the drawings, the same or corresponding structures are denoted by the same or corresponding symbols, and description thereof may be omitted. The present invention is not limited to the following embodiments.

< first embodiment >, first embodiment

Fig. 1A shows a schematic plan view of a glass structure 100 according to a first embodiment of the present invention. Fig. 1A shows an example in which a glass structure 100 is used as a window glass of a vehicle. Fig. 1A is a view of a state in which the glass structure 100 is mounted on a window frame member 45 (an adhered member) of a vehicle, and an adhered structure for a vehicle is formed, as viewed from the inside of the vehicle. As shown in fig. 1A, the glass structure 100 is disposed such that the peripheral edge thereof overlaps with a part of the window frame member 45. The window frame member 45 may be made of metal, plastic, or the like.

Fig. 1B is an enlarged view of a part of the constituent elements of the portion I in fig. 1A, specifically, a view showing a state in which the window frame member 45 and the electric conductor 41 are removed from the configuration shown in fig. 1A. A cross-sectional view along line II-II of FIG. 1A is shown in FIG. 1C. Fig. 1D shows a sectional view taken along line III-III of fig. 1C. As shown in fig. 1A to 1D, the glass structure 100 includes a glass plate 11 and a connecting member 20 disposed on at least one surface of the glass plate 11. In the first embodiment, the glass structure 100 is attached to an adherend (in the illustrated example, the window frame member 45) by the adhesive 30A as the adhesive material 30.

The glass plate 11 in the present embodiment is a window glass of a vehicle, and may be, for example, a front window glass, a rear window glass, a side window glass, a sunroof glass, or the like. The glass constituting the glass plate 11 may be inorganic glass or organic glass. Examples of the inorganic glass include soda lime silicate glass, aluminosilicate glass, borate glass, lithium aluminosilicate glass, and borosilicate glass. The method for forming the glass sheet is not particularly limited, but a glass sheet formed by a float process or the like is preferable. The glass plate 11 may be unreinforced or may be subjected to air-cooling strengthening or chemical strengthening treatment. The unreinforced glass is a glass obtained by forming a molten glass into a plate shape and annealing the plate shape. The tempered glass is a glass in which a compressive stress layer is formed on the surface of unreinforced glass. When the tempered glass is an air-cooled tempered glass, the surface of the glass can be tempered by quenching the uniformly heated glass plate from a temperature near the softening point, and by utilizing the temperature difference between the surface of the glass and the inside of the glass, compressive stress is generated on the surface of the glass. In the case where the tempered glass is a chemically tempered glass, the surface of the glass can be tempered by applying compressive stress to the surface of the glass by an ion exchange method or the like.

As the glass plate 11, ultraviolet or infrared absorbing glass may be used, and transparent glass is more preferable, but may be colored to such an extent that transparency is not impaired. The glass plate 11 may be plexiglass. Examples of the organic glass include transparent resins such as polycarbonate, acrylic resin (e.g., polymethyl methacrylate), polyvinyl chloride, and polystyrene.

The shape of the glass plate 11 is not limited to the substantially rectangular shape as shown in the figure, and may be various shapes. The glass plate 11 may be bent by being processed to a predetermined curvature. In this case, the radius of curvature of the glass plate 11 may be 500 to 50000mm. When the glass plate 11 is attached to a vehicle, for example, it may be a single curved shape curved in the left-right direction or the up-down direction, or may be a multi-curved shape curved in the left-right direction and the up-down direction. In order to process the glass plate 11 into a predetermined curvature, bending molding such as gravity molding or press molding may be performed. The thickness of the glass plate 11 may be 0.3 to 5mm. More preferably 0.5mm to 2.4mm.

The connection member 20 used in the present embodiment is foil-shaped, that is, has a shape smaller in thickness than in width. The foil-shaped connecting member 20 may be a single wire (conductor line) or a flat harness having a structure in which the periphery of a plurality of wires arranged in parallel at a distance from each other is insulated and covered. The foil-shaped connecting member 20 may be a strip-shaped or belt-shaped member having a substantially constant width (except for the width of the portion where the convex portion and the concave portion are formed, described below), and may be constituted by, for example, a flexible printed circuit board (Flexible Printed Circuit (FPC)), a flexible flat cable (Flexible Flat Cable (FFC)), or the like.

The foil-shaped connection member 20 may be electrically connected at one end to an electrical conductor 41 (fig. 1A and 1C) that becomes a part of the electrical apparatus, and directly or indirectly connected at the other end to a power source or the like. The conductor 41 may constitute an electronic device such as an antenna, a defogger, a deicer, or a lighting device, or a part of a wiring member used for the same. In the example shown in fig. 1A, the conductor 41 is shown as a conductor contained in a high-mount brake lamp provided in the rear of the vehicle. The conductor 41 may be provided so as to be in contact with either one or both surfaces or end surfaces of the glass plate 11, or may be provided in the vicinity of the glass plate 11 so as not to be in contact with the glass plate 11, as shown in fig. 1A and 1C.

The foil-shaped connecting member 20 may be covered with a resin as a dielectric (insulator) except for both ends, i.e., one end connected to a conductor and the other end connected to a power source or the like. In other words, the foil-like connecting member 20 may be provided with a coating made of resin. The coating resin of the foil-like connecting member 20 may be a thermosetting resin or a thermoplastic resin. The coating resin is not particularly limited as long as it is a material having insulation, flexibility and heat resistance, and may be a polyester resin such as polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate, a polyamide resin such as nylon 6, nylon 66 and nylon 610, a polyimide resin such as polyimide, polyamideimide and polyether imide, a fluorine resin, polyether sulfone, polyether ketone, polyether sulfide, polyarylate, polyester ether, wholly aromatic polyamide, polyaramid, polypropylene and polycarbonate. In this embodiment, a polyimide resin such as polyimide is preferably used.

The foil-shaped connecting member 20 may be formed by sandwiching a single wire or a plurality of wires arranged in parallel in a foil-shaped resin sheet, and bonding or thermocompression bonding the sheets to each other. The foil-shaped connecting member 20 may be formed into a foil shape by injection molding, extrusion molding, or the like so as to embed the lead wire. The foil-like connecting member 20 thus obtained may have an elongated cross-sectional shape in the width direction, regardless of the shape of the wire. The shape and size of the cross section cut along the width direction of the foil-like connecting member 20 may be substantially uniform along the longitudinal direction.

As shown in fig. 1C and 1D, the foil-shaped connecting member 20 is disposed along and in contact with one main surface (in the illustrated example, the vehicle-interior surface) of the glass plate 11. The glass plate 11 and the foil-shaped connecting member 20 may be bonded by an adhesive, a tape, or the like, or may be stacked in contact only without bonding.

When the glass structure 100 including the glass plate 11 and the foil-shaped connecting member 20 described above is attached to an adherend (in the illustrated example, the window frame member 45 for a vehicle), the adhesive 30A (adhesive material 30) is sandwiched therebetween as described above to adhere the both members. In the bonding, first, the adhesive 30A may be disposed so as to span the foil-shaped connecting member 20 at least in the width direction, that is, so as to cover both edge portions of the foil-shaped connecting member 20 continuously in the width direction of the foil-shaped connecting member 20 (fig. 1B). Then, the glass structure 100 is laminated on the window frame member 45 so that the adhesive 30A contacts the window frame member 45 (fig. 1A, 1C, etc.), and the two are pressed against each other as necessary, whereby the glass structure 100 can be bonded to the window frame member 45. Thereby, the adhesive 30A is in contact with the glass plate 11 and the foil-like connecting member 20, respectively, on one side (vehicle outside) and with the window frame member 45 on the other side (vehicle inside) (fig. 1C and 1D). In addition, when mounting, a primer suitable for the material of each member may be applied to the whole or a part of at least the portion of one or more surfaces of the glass plate 11, the foil-like connecting member 20, and the window frame member 45, which is in contact with the adhesive 30A, as necessary.

Accordingly, although the glass structure 100 and the member to be bonded (window frame member 45) are bonded by the adhesive 30A, it is important that the adhesive 30A be in close contact with the glass structure 100 and the member to be bonded, respectively, in order to obtain good adhesion. However, the thickness of the portion of the glass structure 100 where the foil-like connecting member is provided is larger than the thickness of the portion of the glass plate 11 alone. That is, the difference in thickness between the portion provided with the foil-like connecting member and the portion not provided with the foil-like connecting member is small but still small, and a difference in height is formed. When the adhesive is disposed from above the foil-like connecting member and/or when it is superposed with the member to be bonded as described above, it is pressed in the thickness direction. At this time, the adhesive at the level difference and the periphery thereof may not adhere to the foil-like adhesive member depending on the viscosity, rheological properties, and the like of the adhesive. For example, in the case where the adhesive has high viscosity, or the adhesive is a fluid exhibiting dilatancy, the adhesive may not enter the portion having the level difference.

In general, the adhesive material 30 spreads from the edge portion of the foil-like connecting member to the periphery when pressed in the thickness direction. Here, when the edge portion is a foil-shaped connecting member 20a having a straight outline in a plan view, the adhesive material 30 easily flows from the edge portion toward the outer side in the width direction, that is, in a direction away from the edge portion in a plan view (fig. 2 (a)). Therefore, there are cases where the amount of the adhesive material 30 that can move along the end face of the foil-like connecting member 20a or in the thickness direction of the foil-like connecting member 20a is small or almost no.

In contrast, according to the present embodiment, the foil-like connecting member 20 has a concave portion and/or a convex portion at the edge portion. For example, as shown in fig. 1B, the foil-like connecting member 20 may have concave portions 21, 21 at least at the positions where the adhesive material 30 is disposed. That is, the concave portion and/or the convex portion of the edge portion of the foil-like connecting member 20 are formed in the region overlapping the adhesive material 30. The concave portion and/or the convex portion may be formed only in the region overlapping the adhesive material 30, but may be formed in the region not overlapping the adhesive material 30. By forming the concave portion or the convex portion, or both, in the edge portion of the foil-like connecting member 20, the adhesive material 30 easily enters the concave portion or the convex portion. In the cross-sectional view of fig. 1C, the recess 21 is shown surrounded by a dotted circle. Hereinafter, the same applies to other cross-sectional views showing the concave portion 21 corresponding to fig. 1C.

This will be described in more detail based on an example of the foil-like connecting member 20 having the concave portion. The adhesive material 30 spreads from the edge portion to the periphery if pressed in the thickness direction of the foil-like connecting member, but if the tangential direction (or normal direction) of the outline of the edge portion changes due to the presence of the concave portion 21, for example, a portion where the adhesive material 30 flows in from a plurality of directions and gathers is formed (fig. 2 b). In the example of fig. 2 (b), the adhesive material 30 is easily gathered at the bottom point of the concave portion. Thus, the adhesive material 30 is less likely to escape to the outside in the width direction at the bottom point of the recess and in the vicinity thereof, and is likely to contact the end surface of the foil-like connecting member 20 (fig. 1D). Therefore, the adhesion between the adhesive material 30 and the foil-shaped connecting member 20 can be improved at the concave portion 21, particularly at the bottom point of the concave portion 21, and the air tightness, water tightness, and the like of the structure formed by including the glass structure 100 can be improved.

In the case where the protruding portion is formed at the edge portion of the foil-like connecting member 20 (described below with reference to fig. 5 and the like), the same function as the recessed portion 21 described above is also performed. That is, when the adhesive material 30 is pressed in the thickness direction, the adhesive material 30 flows from a plurality of directions toward the apex of the convex portion, and the adhesive material 30 tends to pool at the apex of the convex portion. Thus, the adhesive material 30 is less likely to escape to the outside in the width direction at the apex of the protruding portion and in the vicinity thereof, and is likely to contact the end surface of the foil-like connecting member 20, and the adhesion between the adhesive material 30 and the foil-like connecting member 20 can be improved.

The width (length in the direction orthogonal to the longitudinal direction) of the foil-like connecting member 20 used in the present embodiment may be 1 to 200mm. The thickness of the foil-like connecting member 20 may be 0.05-2 mm. The thickness of the foil-like connecting member 20 may be 0.05 to 0.5mm or 0.5 to 2mm depending on the use of the glass structure, but even when such a thick foil-like connecting member is used, the adhesive material 30 can be favorably adhered to the foil-like connecting member according to the present embodiment, and tight adhesion between the glass structure and the adherend can be formed. Further, the cross-sectional area of the foil-like connecting member 20 (the area of the cross-section (illustrated in FIG. 1D) cut in the width direction of the foil-like connecting member 20) may be 0.05 to 100mm ² 。

The cross-sectional shape of the foil-shaped connecting member 20 (the shape of the cross-section cut along the width direction of the foil-shaped connecting member 20) is a shape elongated in the width direction as described above, and may be a rectangle having a long side in the width direction of the foil-shaped connecting member 20, for example, as shown in fig. 1D. Further, the thickness of the foil-like connecting member 20 may not be fixed in the widthwise direction, and may be a sectional shape whose thickness varies depending on the position. Examples of the cross-sectional shape of the foil-like connecting member 20 other than the rectangle include an oblong shape, a parallelogram shape, and a trapezoid shape. In the case of the trapezoid, the glass plate 11 is preferably a trapezoid having a long side. In addition, in the case where the thickness of the foil-shaped connection member 20 is not uniform, the above thickness of the foil-shaped connection member 20 may be the maximum thickness.

Further, according to fig. 1A, the foil-like connection member 20 is provided near the upper left end in the drawing, but the position where the foil-like connection member 20 is provided may be appropriately determined according to the kind of the electric apparatus to be equipped, the bonding form of the glass structure 100 and the member to be bonded, and the like, and may be any position of the glass plate 11. Further, the foil-like connecting member 20 may be provided in plural overlapping or plural juxtaposed on the glass plate 110.

The adhesive 30A used in the present embodiment is preferably an adhesive that can form adhesion between the glass plate 11 and the adherend (window frame member 45) and adhesion between the foil-shaped connecting member 20 and the adherend (window frame member 45) in the presence or absence of a primer. Examples of the adhesive 30A include urethane adhesives and silicone adhesives. Specific examples of the urethane adhesive include WS-202, WS-252 (manufactured by Dai Seisaku rubber Co., ltd., #560, #3700 (manufactured by Seamata Co., ltd.), #58702 (manufactured by Dow Corp.).

In addition, in recent years, in particular, in order to improve the adhesion rigidity, there have been increasing cases where an adhesive (adhesive material) exhibiting high tackiness, more specifically, exhibiting high tackiness at the coating stage is used. When an adhesive having high tackiness is used, the adhesive is less likely to adhere to the foil-shaped connecting member, particularly to the end face of the foil-shaped connecting member, and there is an increased possibility that a gap is generated between the adhesive and the foil-shaped connecting member. However, according to the present embodiment, even when an adhesive having a high viscosity is used, the adhesive can be sufficiently adhered to the foil-shaped connecting member, and the air tightness and water tightness of the glass structure 100 can be improved. The viscosity of the adhesive 30A (adhesive material 30) may be 30 to 100pa·s (apparent viscosity at a shear rate of 430/sec measured according to an adhesive for automotive window glass of Japan Automobile Standards Organization (JASO) M338 (JP).

Fig. 3A shows a modification of the glass structure 100 according to the first embodiment of the present invention. Fig. 3A is a view corresponding to fig. 1A. Further, fig. 3B shows a sectional view of fig. 3A taken along line IV-IV. In this example, the glass structure 100 includes a glass plate 11 and a foil-shaped connecting member 20 disposed on one surface of the glass plate 11, but is different from the example shown in fig. 1A in that the glass plate 11 constitutes a part of the laminated glass 10. Fig. 3C to 3E show further modifications in cross-sectional views corresponding to fig. 3B.

As shown in fig. 3B, the laminated glass 10 includes a glass plate 11 (first glass plate 11) on the vehicle interior side and a second glass plate 12 on the vehicle exterior side other than the first glass plate 11, and the two glass plates 11 and 12 can be joined by an interlayer 15. The first glass plate 11 and the second glass plate 12 in this example may be the same glass plate as the glass plate 11 described with reference to fig. 1A to 1D. The intermediate film 15 may be a film containing, as a main component, polyvinyl acetal, polyvinyl butyral, or the like.

In the example shown in fig. 3A and 3B, the conductor 41 is disposed in the laminated glass 10, and the foil-shaped connecting member 20 is disposed such that one end thereof contacts the conductor 41. More specifically, the foil-like connecting member 20 is arranged between the first glass plate 11 and the intermediate film 15 of the laminated glass 10. The foil-shaped connecting member 20 is disposed so as to extend from the end face of the laminated glass 10, turn back at the edge portion of the laminated glass 10, and contact the main face of the first glass plate 11 along the main face.

However, the arrangement of the connection member 20 in the glass structure 100 is not limited to the illustrated example. For example, the foil-shaped connecting member 20 may be protruded from a cutout formed in the first glass plate 11, bent, and arranged on the main surface (one surface of the laminated glass 10) of the first glass plate 11.

As shown in fig. 3B, the conductor 41 is disposed in the laminated glass 10 so as not to contact with either the first glass plate 11 or the second glass plate 12, that is, so as to be disposed inside the interlayer 15. As shown in fig. 3C, the conductor 41 may be disposed on a surface of the first glass plate 11 of the laminated glass 10 facing the second glass plate 12.

Further, as shown in fig. 3D, the foil-like connecting member 20 is arranged between the second glass plate 12 on the vehicle outside and the intermediate film 15. In the example shown in fig. 3D, the conductor 41 is disposed in the interlayer film 15 so as not to contact any of the first glass plate 11 and the second glass plate 12 in the laminated glass 10. However, the conductor 41 may be arranged on the surface of the second glass plate 12 facing the first glass plate 11 as shown in fig. 3E.

The number of intermediate films 15 may be plural, and the foil-shaped connecting member 20 may be disposed between two of the plural intermediate films.

The thickness of the entire laminated glass 10 may be 2.8 to 10mm. In addition, the thickness of one glass plate may be 0.3 to 5mm. The thickness of the first glass plate 11 on the vehicle interior side and the thickness of the second glass plate 12 on the vehicle exterior side may be the same or different. The laminated glass 10 may have a wedge shape in which the cross-sectional thickness becomes thicker from the lower side to the upper side when mounted on a vehicle. The laminated glass 10 may be composed of three or more glass plates.

In addition, a water-stop tape may be provided between the foil-shaped connecting member 20 and the first glass plate 11 so as to cover at least the foil-shaped connecting member 20 in a plan view.

< shape of foil-shaped connecting Member >

Next, the shape of the foil-like connecting member 20 will be described in more detail with reference to fig. 4 to 6. As described above, the edge portion of the foil-like connecting member 20 of the present embodiment has a concave portion and/or a convex portion in a plan view.

Fig. 4 shows an example in which the edge portion of the foil-like connecting member 20 has a concave portion 21. Fig. 4 (a) corresponds to the foil-shaped connecting member 20 in the glass structure 100 shown in fig. 1B. That is, fig. 4 (a) shows a foil-shaped connecting member 20 having recesses 21, 21 formed at both edge portions, respectively. The concave portion 21 may be formed at each edge portion as shown in the drawing, or may be formed at only one edge portion. However, in order to improve the adhesion between the adhesive material and the both edge portions, it is preferable to form one or more concave portions on each of the both edge portions.

The recess 21 may be formed by cutting an edge portion of the foil-like connecting member 20. In this case, it is preferable that the notched portion does not contain a wire. That is, the recess 21 is preferably formed in the resin coating of the foil-shaped connecting member 20. In addition, in the case where the foil-shaped connecting member 20 is formed by injection molding or the like, the molding may be performed using a mold having the shape of the concave portion 21 at the time of molding.

In fig. 4 (a), the shape of the concave portion 21 in plan view (the shape of the portion subtracted from the foil-like connecting member 20 having no concave portion and convex portion extending in a straight line from the edge portion) is substantially a regular triangle, but the shape of the concave portion 21 is not necessarily limited to the shape shown in the drawing, and may be a shape other than a regular triangle, for example, an isosceles triangle other than a regular triangle, or a triangle having different lengths toward both sides on the inner side in the width direction. Further, the shape of the concave portion 21 in plan view may be a non-triangular shape, for example, a partially circular shape such as a semicircle as shown in fig. 4 (b). In addition, it may be a partial ellipse such as a half ellipse.

The shape of the recess 21 in the foil-shaped connecting member 20 in plan view may be a quadrangle as shown in fig. 4 (c) to (e). For example, the shape of the concave portion 21 shown in fig. 4 (c) in plan view is square. The recess 21 may have a rectangular shape, and in this case, the long side of the rectangular shape may extend in the long side direction of the foil-shaped connecting member 20 or may extend in the width direction. The shape of the recess 21 may be a parallelogram or a trapezoid as shown in fig. 4 (d) and (e). In the example shown in fig. 4 (d), the concave portion 21 is a trapezoid having a long side directed outward in the width direction, and in the example shown in fig. 4 (e), the concave portion 21 is a trapezoid having a long side directed inward in the width direction. The shape of the recess 21 in plan view may be a polygon other than a quadrangle.

Regardless of the shape of the recess 21, the depth of the recess 21, i.e., the length w from the edge portion of the foil-like connecting member 20 to the bottom point of the recess 21 _r Are each preferably 0.1 to 20mm, more preferably 0.5 to 3mm. Depth w of the recess 21 _r Is the interval between the most protruding position and the most recessed position in the width direction of the edge portion of the foil-like connecting member 20. By setting the depth w of the recess 21 _r In this range, the adhesive material can easily flow in a plurality of directions, and on the other hand, the strength and the electrical connection function of the foil-like connection member 20 can be prevented from being lowered.

The width of the recess 21, that is, the length d in the longitudinal direction of the recess 21 at the edge of the foil-shaped connecting member 20 _r Preferably 0.1 to 20mm, more preferably 0.5 to 5mm. By setting the width d of the recess 21 _r In this range, the adhesive material can easily flow in a plurality of directions, and the adhesive material can easily enter the concave portion 21, and on the other hand, the strength and the electrical connection function of the foil-like connection member 20 can be prevented from being lowered.

Further, the depth w of the recess 21 _r Width d of recess 21 _r Ratio (w) _r /d _r ) Preferably 0.1 to 10, more preferably 0.5 to 5. By mixing the ratio%w _r /d _r ) In this range, the adhesive material can easily flow in a concentrated manner, and the adhesive material can easily enter the concave portion 21, so that the adhesive material can be more favorably adhered to the end surface of the foil-shaped connecting member 20.

Fig. 5 shows an example in which the edge portion of the foil-like connecting member 20 has a convex portion 22. Fig. 5 (a) shows a foil-shaped connecting member 20 having protrusions 22, 22 formed on both edge portions, respectively. The convex portion 22 may be formed at each edge portion as shown in the figure, or may be formed at only one edge portion. However, in order to improve the adhesion between the adhesive material and the two edge portions, it is preferable to form 1 or more protruding portions on each of the two edge portions.

The convex portion 22 is preferably formed in the resin coating of the foil-shaped connecting member 20. The convex portion 22 may be formed by, for example, joining a resin molded portion having the same or substantially the same thickness as the foil-like connecting member 20 to an edge portion of the foil-like connecting member 20. In addition, in the case where the foil-shaped connecting member 20 is formed by injection molding or the like, the molding may be performed using a mold having the shape of the convex portion 22 at the time of molding. The resin coating may be formed to be wide, and the edge portion may be cut so that the convex portion 22 is cut.

In the example shown in fig. 5 (a), the shape of the convex portion 22 in plan view (the shape of the portion added to the foil-shaped connecting member 20 having no concave portion and convex portion extending in a straight line at the edge portion) is substantially triangular. The shape of the convex portion 22 is not necessarily limited to the shape shown in the drawing, and may be other than a regular triangle, for example, an isosceles triangle other than a regular triangle, or a triangle having different lengths toward both sides of the inside in the width direction. Further, the shape of the convex portion 22 in plan view may be a non-triangular shape, for example, a partially circular shape such as a semicircle as shown in fig. 5 (b). In addition, it may be a partial ellipse such as a half ellipse.

The convex portion 22 of the foil-shaped connecting member 20 may have a square shape as shown in fig. 5 (c) to (e) in a plan view. For example, the convex portion 22 shown in fig. 5 (c) has a square shape in plan view. The protruding portion 22 may have a rectangular shape, and in this case, the long side of the rectangular shape may extend in the long side direction of the foil-shaped connecting member 20 or may extend in the width direction. The shape of the convex portion 22 may be a parallelogram or a trapezoid as shown in fig. 5 (d) and (e). In the example shown in fig. 5 (d), the convex portion 22 has a trapezoid shape with a long side facing the outside in the width direction, and in the example shown in fig. 5 (e), the convex portion 22 has a trapezoid shape with a long side facing the inside in the width direction. The shape of the convex portion 22 in plan view may be a polygon other than a quadrangle.

Regardless of the shape of the convex portion 22, the height of the convex portion 22, that is, the length w from the edge portion of the foil-like connecting member 20 to the apex of the convex portion 22 _p Are each preferably 0.1 to 10mm, more preferably 0.5 to 3mm. Height w of the convex portion 22 _p Is the interval between the most protruding position and the most recessed position in the width direction of the edge portion of the foil-like connecting member 20. By the height w of the convex part 22 _p In this range, the adhesive material can easily flow in a plurality of directions, and the amount of resin used for the foil-shaped connecting member 20 can be reduced, thereby preventing an increase in cost.

The width of the convex portion 22, that is, the length d in the longitudinal direction of the convex portion 22 at the edge portion of the foil-shaped connecting member 20 _p Preferably 0.1 to 20mm, more preferably 0.5 to 5mm. By setting the width d of the convex portion 22 _p In this range, the adhesive material can easily flow in a plurality of directions, and the amount of resin used for the foil-shaped connecting member 20 can be reduced, thereby preventing an increase in cost.

Further, the height w of the convex portion 22 _p Width d of the convex portion 22 _p Ratio (w) _p /d _p ) Preferably 0.1 to 10, more preferably 0.5 to 5. By combining the ratio (w _p /d _p ) With the above range, the flow in which the adhesive material is gathered can be easily formed, and the adhesive material can be better adhered to the end face of the foil-like connecting member 20.

The shape of the concave portion 21 in fig. 4 and the shape of the convex portion 22 in fig. 5 are not particularly limited. However, from the standpoint of easy formation of the adhesive material flowing in a plurality of directions along the edge portion and easy collection of the adhesive material (fig. 2 b), the shape of the concave portion 21 or the convex portion 22 in plan view preferably has corners, that is, angular portions or tapered portions. In the case where the edge portion has the concave portion 21, the concave portion 21 preferably has a bottom point and the bottom point has a corner (fig. 4 (a)). In the case where the protruding portion 22 is provided at the edge portion, it is preferable that the protruding portion 22 has a shape having an apex and the apex has an edge angle (fig. 5 (a)). In the case where the shape of the concave portion 21 or the convex portion 22 has an angle, the angle formed by both sides forming the angle is preferably 5 to 175 °, more preferably 30 to 90 °.

Fig. 6 shows another example of the foil-like connecting member 20. Fig. 4 and 5 show examples in which one concave portion 21 or convex portion 22 is formed at one side edge portion of the foil-like connecting member 20, but in the example of fig. 6, a plurality of concave portions 21 or convex portions 22 are formed at one side edge portion.

In the example shown in fig. 6 (a), two concave portions 21 are formed at both edge portions of the foil-like connecting member 20, respectively. In the example shown in fig. 6 (b), two convex portions 22 are formed on each of the two edge portions of the foil-like connecting member 20. In this way, by forming two or more concave portions 21 or convex portions 22 on each side edge portion of the foil-shaped connecting member 20, two or more portions where the adhesive materials are gathered from a plurality of directions can be formed on each side edge portion, and therefore the adhesive materials can be further adhered to the end face of the foil-shaped connecting member 20, and the air tightness and water tightness of the glass structure 100 can be improved.

As shown in fig. 6 (c), the concave portion 21 and the convex portion 22 may be formed at one side edge portion. For example, as shown in the figure, triangular concave portions 21 and triangular convex portions 22 may be alternately formed in succession. In this case, focusing on one side edge portion of the foil-shaped connecting member 20, the interval w between the position most protruding to the outside in the width direction and the most recessed position in the outline in a plan view is preferably 0.1 to 10mm, more preferably 0.5 to 3mm.

Further, as an example in which the concave portion 21 and the convex portion 22 are alternately formed, a shape in which the concave portion 21 and the convex portion 22 are formed without corners may be exemplified (fig. 6 (e)). As shown in fig. 6 (e), the outline of the edge portion of the foil-like connecting member 20 is a waveform in the longitudinal direction. In the example shown in fig. 6 (e), the waveforms of the contours of the edge portions are the same but the phases are different, so that the width of the foil-like connecting member 20 is fixed.

As described above, the concave portion 21 and/or the convex portion 22 are formed on the edge portion of the foil-like connecting member 20 as shown in fig. 4 to 6. In other words, the outline of the edge portion of the foil-like connecting member 20 in a plan view includes a portion in which the tangential direction or the normal direction (the slope of the tangential line or the normal line) thereof changes. The change in the tangential direction or the normal direction may be discontinuous as shown in fig. 6 (c), or continuous as shown in fig. 6 (d), for example. In either case, when the adhesive material is disposed, the adhesive material can flow in different directions, and the adhesive material is less likely to escape from the edge portion, so that the adhesive material is likely to adhere to the end surface of the foil-shaped connecting member 20.

The shape of the foil-shaped connecting member 20 is not limited to the above, and may be, for example, a shape having 1 or more concave portions 21 at one edge portion and 1 or more convex portions 22 at the other edge portion. In this case, the shape and/or size of the concave portion 21 may be the same as or different from the shape and/or size of the convex portion 22. In one foil-shaped connecting member, the shape of the concave portion 21 formed at one side edge portion may be made to correspond to the shape of the convex portion 22 at the other side edge portion. In this case, for example, two or more foil-like connection members which are arranged in parallel in the width direction and are bonded to each other with resin may be molded by extrusion molding or the like, and when the bonded resin portion is cut in the longitudinal direction, a concave portion may be formed at the edge portion of one foil-like connection member and a convex portion may be formed at the edge portion of the other foil-like connection member by a cutting line. Thereby, the manufacture of a plurality of foil-like connection members having the same contour shape becomes easy, and material saving is also possible.

< second embodiment >

Fig. 7A shows a schematic plan view of a glass structure 200 according to a second embodiment of the present invention. The glass structure 200 shown in fig. 7A can be used as a window glass for a vehicle. An enlarged view of part i in fig. 7A is shown in fig. 7B. A cross-sectional view taken along line ii-ii of FIG. 7A is shown in FIG. 7C. Fig. 7D shows a cross-sectional view taken along line iii-iii of fig. 7C. As shown in fig. 7A to 7D, the glass structure 200 includes a glass plate (first glass plate) 11 and a connecting member 20 disposed on one surface of the glass plate (first glass plate) 11. In the second embodiment, the glass structure 200 is attached to the member to be bonded, but the member to be bonded to which the glass structure 200 can be attached is another glass plate (second glass plate) 12, and the attachment of the glass structure 200 to the member to be bonded (second glass plate 12) is performed by the thermoplastic resin 30B as the adhesive material 30 (fig. 7C and 7D). The thermoplastic resin 30B may be an intermediate film for forming a laminated glass.

The thermoplastic resin 30B is not particularly limited as long as it is a thermoplastic resin that can be used as an intermediate film for forming a laminated glass. Examples of the thermoplastic resin 30B include a plasticized polyvinyl acetal resin, a plasticized polyvinyl chloride resin, a saturated polyester resin, a plasticized saturated polyester resin, a polyurethane resin, a plasticized polyurethane resin, an ethylene-vinyl acetate copolymer resin, an ethylene-ethyl acrylate copolymer resin, a cycloolefin polymer resin, and an ionomer resin. Further, a modified block copolymer hydride-containing resin composition described in Japanese patent No. 6065221 may be suitably used.

Among the thermoplastic resins, plasticized polyvinyl acetal resins are preferably used from the viewpoint of excellent balance of various properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation and sound insulation. Such thermoplastic resins may be used alone or in combination of 2 or more kinds. The term "plasticizing" in the plasticized polyvinyl acetal resin means plasticizing by adding a plasticizer. The same meaning is also indicated for other plasticizing resins.

However, depending on the type of display device, a specific plasticizer may be degraded, and in this case, a resin containing substantially no plasticizer is preferably used. In other words, it is sometimes preferable that the thermoplastic resin 30B contains no plasticizer. Examples of the plasticizer-free resin include ethylene-vinyl acetate copolymer resins.

Examples of the polyvinyl acetal resin include a polyvinyl formal resin obtained by reacting polyvinyl alcohol (PVA) with formaldehyde, a polyvinyl acetal resin in a narrow sense obtained by reacting PVA with acetaldehyde, and a polyvinyl butyral resin (PVB) obtained by reacting PVA with n-butyraldehyde, and PVB is particularly preferably used from the viewpoint of excellent balance of properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. The polyvinyl acetal resin may be used alone or in combination of 2 or more kinds.

The thermoplastic resin 30B may contain functional particles such as an infrared absorber, an ultraviolet absorber, and a luminescent agent, or may have a colored portion called a light-shielding tape.

As the first glass plate 11 and the second glass plate 12 in the second embodiment, the glass plates described in the first embodiment, particularly with reference to fig. 3A and 3B, can be used, respectively. The foil-shaped connecting member 20 may be configured as described in the first embodiment.

The electrical devices and the electrical conductors 41 to which the foil-like connecting member 20 in the second embodiment is connected may also be those described in the first embodiment, particularly with reference to fig. 3A and 3B. That is, the conductor 41 may be a conductor disposed so as to be disposed inside the resulting laminated glass 10.

When the laminated glass is formed by attaching the glass structure 200 including the first glass plate 11 and the foil-shaped connecting member 20 described above to the member to be bonded (in the present embodiment, the second glass plate 12), the first glass plate 11 and the second glass plate 12 are bonded by sandwiching the thermoplastic resin 30B, which is an intermediate film for forming the laminated glass, between the first glass plate 11 and the second glass plate 12 as the adhesive material 30. More specifically, first, the first glass plate 11 is provided with the foil-shaped connecting member 20 on one surface, the above-described layer of the thermoplastic resin 30B is disposed on the side provided with the foil-shaped connecting member 20 of the glass structure 200 including the first glass plate 11, and the second glass plate 12 is laminated with the thermoplastic resin 30B interposed therebetween. The layer of the thermoplastic resin 30B may be formed as a flowable material, and may be disposed by being applied to the glass structure 200, or may be disposed by being laminated by being preformed into a film shape or a sheet shape.

As described above, the laminate obtained by laminating the first glass plate 11, the layer of the thermoplastic resin 30B, and the second glass plate 12 having the foil-shaped connecting member 20 in this order is placed in a bag made of rubber, for example, and the glass structure 200 and the member to be bonded (in this embodiment, the second glass plate 12) are bonded while being degassed while being held at a temperature of about 70 to 110 ℃ at a negative pressure of about-100 to-65 kPa gauge. Then, the pressure-bonding can be performed by heating and pressurizing at, for example, 100 to 150℃and a pressure of 0.6 to 1.3MPa, as required. At the time of this bonding, the thermoplastic resin 30B (adhesive material 30) is softened, and contacts the first glass plate 11 and the foil-shaped connecting member 20 on one side and contacts the second glass plate 12 on the other side (fig. 7C and 7D).

In this way, the glass structure 200 and the member to be bonded (the second glass plate 12) are bonded by the thermoplastic resin 30B to form the laminated glass 10, but in order to obtain good adhesion between layers, it is important that the thermoplastic resin 30B is in close contact with the glass structure 200 and the member to be bonded, respectively. However, the thickness of the portion of the glass structure 200 where the foil-shaped connecting member is provided is larger than the thickness of the portion of the first glass plate 11 alone. That is, the difference in thickness between the portion provided with the foil-like connecting member and the portion not provided with the foil-like connecting member is small but still small, and a difference in height is formed. The layer of the thermoplastic resin 30B is softened during bonding while degassing and/or during subsequent heating and pressurizing as described above, and is pressed in the thickness direction. At this time, depending on the characteristics of the thermoplastic resin, such as the softening point, the melting point, etc., the conditions of degassing or heating and pressurizing, the thermoplastic resin may not be adhered to the foil-like adhesive member at the level difference and the periphery thereof. For example, when the softening point of the thermoplastic resin is high, or when the conditions of heat and pressure are weak (i.e., conditions of relatively low temperature and/or relatively low pressure), the thermoplastic resin may not adhere to the portions having the difference in height.

In general, the adhesive material 30 spreads from the edge portion of the foil-like connecting member to the periphery when pressed in the thickness direction. Here, in the case of the foil-like connecting member 20a having a linear outline in a plan view of the edge portion (fig. 2 (a)), the adhesive material 30 tends to spread from the edge portion toward the outer side in the width direction, that is, in a direction away from the edge portion in a plan view. Therefore, the amount of the adhesive material 30 extruded along the end face of the foil-like connecting member 20a or in the thickness direction of the foil-like connecting member 20a is small or almost small.

In contrast, according to the present embodiment, the foil-like connecting member 20 has a concave portion and/or a convex portion at the edge portion. For example, the foil-shaped connecting member 20 may have concave portions 21, 21 at least at the positions where the adhesive material 30 is disposed, as shown in fig. 7B. By forming the concave portion or the convex portion, or both, in the edge portion of the foil-like connecting member 20, the thermoplastic resin 30B (adhesive material 30) easily enters the concave portion or the convex portion.

This point will be described in more detail based on an example of the foil-like connecting member 20 having the concave portion. The adhesive material 30 spreads from the edge portion to the periphery if pressed in the thickness direction of the foil-like connecting member, but if the tangential direction (or normal direction) of the outline of the edge portion changes due to the presence of the concave portion 21, for example, a portion where the adhesive material 30 is pressed and gathered from a plurality of directions is formed (fig. 2 b). In the example of fig. 2 (b), the adhesive material 30 is easily gathered at the bottom point of the concave portion. Thus, the adhesive material 30 is less likely to escape to the outside in the width direction at the bottom point of the recess and in the vicinity thereof, and is likely to contact the end surface of the foil-like connecting member 20 (fig. 1D). Therefore, the adhesion between the adhesive material 30 and the foil-shaped connecting member 20 can be improved at the concave portion 21, particularly at the bottom point of the concave portion 21, and therefore the air tightness, the water tightness, and the like of the laminated glass including the glass structure 200 can be improved.

Even when the protruding portion is formed at the edge portion of the foil-like connecting member 20 (fig. 5, etc.), the same function as the recessed portion 21 described above is exhibited. That is, when the adhesive material 30 is pressed in the thickness direction, the adhesive material 30 is pushed out so as to face the apex of the convex portion from a plurality of directions, and the adhesive material 30 is easily gathered at the apex of the convex portion. Thus, the adhesive material 30 is less likely to escape to the outside in the width direction at the apex of the protruding portion and in the vicinity thereof, and is likely to contact the end surface of the foil-like connecting member 20, and the adhesion between the adhesive material 30 and the foil-like connecting member 20 can be improved.

In the second embodiment, the configuration and operation of the concave portion 21 and/or the convex portion 22 formed at the edge portion of the foil-like connecting member 20 are the same as those described in the first embodiment with reference to fig. 4 to 6.

In addition, in general, when a laminated glass is formed by adhering a glass structure including a glass plate and a foil-shaped connecting member disposed on one surface of the glass plate to another glass plate with a thermoplastic resin interposed therebetween, a water-stop adhesive tape made of, for example, a resin having elasticity may be disposed between the glass plate and the foil-shaped connecting member constituting the glass structure. However, since the thermoplastic resin (adhesive material) for laminated glass can satisfactorily adhere the edge portion of the foil-shaped connecting member even when the glass structure of the present embodiment is used in which the foil-shaped connecting member has the concave portion and/or the convex portion in the edge portion, the number of members for manufacturing the glass structure for a vehicle can be reduced without requiring the additional water-blocking tape as described above.

Fig. 8A and 8B show a modification of the glass structure 200 according to the second embodiment. Fig. 8A is a cross-sectional view corresponding to fig. 7C, and fig. 8B is a cross-sectional view taken along line iv-iv of fig. 8A. The example shown in fig. 8A and 8B is the same as the basic structure of the example described with reference to fig. 7A to 7D, but is different from the example described with reference to fig. 7A to 7D in that the layer of the thermoplastic resin 30B (adhesive material 30) is composed of two layers of the layer 30Ba and the layer 30 Bb. In this example, the conductor 41 is disposed between the layers 30Ba and 30Bb, and the foil-like connection member 20 connected to the conductor 41 is also disposed between the layers 30Ba and 30 Bb.

In the case of the example shown in fig. 8A and 8B, if the concave portion 21 and/or the convex portion 22 are formed at the edge portion of the foil-like connecting member 20, the thermoplastic resin layers 30Ba and 30Bb are easily extruded at the concave portion 21 and/or the convex portion 22 in the step of forming the laminated glass. Therefore, the thermoplastic resin layers 30Ba and 30Bb are also easily pushed into the end surfaces of the foil-shaped connecting member 20 at the concave portions 21 and/or convex portions 22 of the edge portions of the foil-shaped connecting member 20, and the adhesion between the thermoplastic resin and the foil-shaped connecting member 20 can be improved.

In the example shown in fig. 7A and 7B and fig. 8A and 8B, the conductor 41 is disposed in the laminated glass 10 so as not to contact with either the first glass plate 11 or the second glass plate 12, that is, may be disposed in the thermoplastic resin 30B (adhesive material 30). However, the conductor 41 may be disposed on a surface of the laminated glass 10 where the first glass plate 11 and the second glass plate 12 face each other (fig. 9A and 9B), or on a surface of the second glass plate 12 where the first glass plate 11 faces each other.

Both of the glass structures 100 and 200 can be suitably used as glass structures for vehicle window glass. Since water droplets are particularly likely to strike the windshield and water is likely to enter when the vehicle is traveling in a weather such as a rainy day, water leakage into the vehicle can be prevented by using the glass structures 100 and 200 of the glass structures of the present embodiment, which have high water tightness, as the glass structures for the windshield.

The configurations of the above-described embodiments (first embodiment and second embodiment) can be combined. For example, in the examples shown in fig. 7A to 7D or the examples shown in fig. 8A and 8B, the foil-shaped connecting member 20 extending from the end surface of the laminated glass 10 may be folded back toward the first glass plate 11 side and arranged so as to contact along the main surface of the first glass plate 11. Then, the concave portion 21 and/or the convex portion 22 may be formed at the folded position of the foil-shaped connecting member 20, and the concave portions 21, 21 may be formed as in the example shown in fig. 1A to 1D, for example. As described above, both the adhesion between the glass plates constituting the laminated glass 10 and the adhesion between the laminated glass 10 and other members such as the window frame member 45 can be improved by forming the concave portion 21 and/or the convex portion 22, respectively, at the edge portion of the foil-shaped connecting member 20 disposed in the laminated glass 10 and at the edge portion of the portion protruding from the end surface of the laminated glass 10 and folded back. Thus, a vehicle window having higher air tightness and water tightness can be formed.

Examples

(Experimental procedure)

The following resin molded bodies FH1 to FH3 simulating flat cables were prepared.

Resin molded article FH1 (example 1): a molded article of an acrylic foam resin having a constant width of 20mm and a constant thickness of 0.8mm was formed such that the outline of both edge portions was linear and no concave portion or convex portion was formed at the edge portions (FIG. 10 (a)).

Resin molded article FH2 (example 2): two triangular notches are formed in each of the two edge portions of the resin molded article FH 1. The depth w of the triangular cutout (recess) was 3mm and the width d was 2mm, respectively (fig. 10 b).

Resin molded article FH3 (example 3): resin molded bodies each having 1 triangular convex portion tapered toward the outer side in the width direction of the foil-shaped connecting member are formed at both edge portions of the foil-shaped connecting member FH 1. The height w of the convex portion was 3mm and the width d of the convex portion was 2mm, respectively (fig. 10 (c)).

Two sheet glasses (plan view: 300 mm. Times.300 mm, thickness: 5 mm) G1 and G2 were prepared. The resin molded articles FH1 to FH3 are adhered to one of the glass sheets G1 in parallel with a double-sided tape (manufactured by 3M corporation, F-9460) at intervals (fig. 11 (a)). Next, a urethane adhesive (WS 373, manufactured by yokohama rubber co.) AD was applied to a thickness of about 10mm so as to span each of the resin molded bodies FH1 to FH3 (fig. 11 (b)). At this time, the urethane adhesive AD is disposed so as to cover the concave portion of the resin molded body FH2 and the convex portion of the resin molded body FH3, and so as to have a U-shape in a top view of the entire urethane adhesive AD.

The other sheet glass G2 was superimposed on the side provided with the resin molded bodies FH1 to FH3 and the urethane adhesive AD, and the sheet glass G1 and the sheet glass G2 were pressed against each other until the gap became about 6mm (fig. 11 (c 1), and fig. 11 (c 2), which is a V-V cross-sectional view of fig. 11 (c 1)). Then, water is injected into the inside of the U-shape of the urethane adhesive AD (fig. 11 (d)). Next, a hose H (inner diameter 3 mm) was inserted between the plate glasses G1, G2, and the front end of the hose H was brought into contact with the vicinity of the bonding position between the resin molded bodies FH1 to FH3 and the urethane adhesive, and compressed air of 1 to 2kPa was supplied to the hose H (fig. 11 (e)).

(evaluation)

Whether or not bubbles were generated from the inside of the U-shape of the urethane adhesive AD was visually confirmed. When it was confirmed that air bubbles were generated, a gap was formed between the urethane adhesive and the resin molded body, into which air from the hose H could intrude, and it was evaluated that the air tightness and the water tightness were low. On the other hand, when no air bubbles were found, it was considered that there was no gap between the urethane adhesive and the resin molded body, and it was evaluated that the air tightness and the water tightness between the urethane adhesive and the resin molded body were high.

Bubbles were confirmed in the resin molded article FH1 of example 1. In the resin molded articles FH2 and FH3 of example 2 and 3, it was confirmed that no air bubbles were generated from the inside of the U-shape in which the urethane adhesive AD was disposed.

As is clear from the present example, in the glass structure, the adhesion between the glass structure and the adhesive material when the glass structure is adhered to the adhered member by the adhesive material can be improved by using the foil-shaped connecting member (examples 2 and 3) in which the convex portion or the concave portion is formed at the edge portion. Therefore, even if a glass structure including a foil-like connection member having the shape as used in examples 2 and 3 is used in an environment exposed to water, for example, the possibility of water leakage from between adhesive materials can be reduced.

The present patent application claims priority from japanese patent application No. 2019-090529, which is filed to the japanese patent office on the basis of day 5 and 13 of 2019, and the entire contents of which are incorporated herein by reference.

Symbol description

100. 200 glass structure

20. Foil-shaped connecting member

20a foil-shaped connecting member (Prior Art)

30. Adhesive material

30A adhesive

30B, 30Ba, 30Bb thermoplastic resin layer

10. Laminated glass

11. Glass board (first glass board)

12. Second glass plate

15. Intermediate film

41. Electric conductor

45. A sash member.

Claims

1. A glass structure for a vehicle, comprising a glass plate, and a foil-shaped connecting member disposed on a main surface of the glass plate and electrically connected to an electrical conductor disposed on or near the glass plate, wherein the foil-shaped connecting member is bonded to a member to be bonded disposed so as to face at least a part of the glass plate or the main surface of the glass plate by an adhesive disposed so as to overlap at least a part of an edge portion of the foil-shaped connecting member, wherein the edge portion of the foil-shaped connecting member has a concave portion and/or a convex portion in a plan view,

The concave portion and/or the convex portion is formed in a region overlapping with the adhesive,

the foil-shaped connecting member includes a resin coating, the concave portion is formed on the resin coating of the foil-shaped connecting member by cutting an edge portion of the foil-shaped connecting member, the convex portion is formed on the resin coating of the foil-shaped connecting member,

height w of the convex part _p 0.1-10 mm, the height w of the convex part _p Width d of the convex part _p Ratio w of (2) _p /d _p 0.1 to 10, wherein the height w of the convex part _p Is the interval between the most protruding position and the most recessed position in the width direction of the edge part of the foil-shaped connecting member, the width d of the convex part _p Is the length in the longitudinal direction of the convex part of the edge part of the foil-shaped connecting member,

the adhered member is a window frame member of a vehicle body.

2. The glass structure for a vehicle according to claim 1, wherein in the concave portion, a distance between a most protruding position and a most recessed position in a width direction of the edge portion of the foil-shaped connecting member is 0.1 to 10mm.

3. The glass structure for a vehicle according to claim 1, wherein the concave portion or the convex portion has a corner portion.

4. The glass structure for a vehicle according to claim 1, wherein the thickness of the foil-like connecting member is 0.05 to 2mm.

5. The glass structure for a vehicle according to claim 1, wherein the viscosity of the adhesive is 30 to 100Pa ･ s.

6. The vehicular glass structure according to claim 1, wherein the adhesive is a urethane adhesive.

7. The glass structure for a vehicle according to claim 1, wherein,

the glass sheet forms part of a laminated glass,

one end of the foil-shaped connecting member is disposed in the laminated glass, and the other end thereof extends from an end face of the laminated glass and is folded back at an edge portion of the laminated glass.

8. A bonding structure formed by bonding the glass structure for a vehicle according to any one of claims 1 to 7 to a sash member of a vehicle body with the adhesive.