JP7797932B2 - Vehicle window glass - Google Patents

Description

This disclosure relates to window glass for vehicle windows.

The glass with molding disclosed in Patent Document 1 consists of glass, a metal molding that faces the edge of the glass, and a resin molding that connects the metal molding to the edge of the glass. The metal molding and resin molding are bonded together by applying a primer.

JP 2013-188967 A

The inventors of the present application have discovered the following problems.
When such molding-equipped glass is installed in a vehicle, the metal molding, which is a metal component, may come into contact with the vehicle body, potentially causing scratches on the vehicle or the metal component. Such scratches may then lead to rust on the vehicle or the metal component. Furthermore, there is room for further consideration regarding the adhesive strength between the metal molding and the resin molding.

This disclosure was made in consideration of the above-mentioned problems, and aims to provide a vehicle window glass that can increase the adhesive strength between the metal member and the resin molding while preventing the metal member from coming into contact with the vehicle.

The vehicle window glass according to the present disclosure comprises:
A glass plate and
a resin molding provided on the peripheral edge of the glass plate,
A window glass for a vehicle window, wherein the glass plate and the resin molding are an integrally molded product,
Further, a metal member having higher rigidity than the resin molding is provided,
the metal member is disposed on the vehicle interior side of the resin molding when the vehicle window glass is attached to the vehicle;
the metal member has a through hole,
The resin molding includes a metal member protection portion that fills the through hole of the metal member and covers at least a portion of the metal member.

Furthermore, the thickness of the metal member protection portion may be 1 mm or more.

The resin molding may also be characterized by including a plurality of the metal member protection portions, the metal member protection portions being arranged at a predetermined interval along the lower edge of the vehicle window glass.

Furthermore, the arithmetic mean roughness Ra of the surface of the metal member protection portion may be 1 to 30 μm.

Furthermore, the thickness of the metal member protection portion may be greater than the thickness of the metal member.

Furthermore, when the vehicle window glass is attached to the vehicle, the thickness of the metal member protection portion may be greater than the distance between the metal member protection portion and the vehicle.

The metal member protection portion may also be characterized by covering the periphery of the through hole in the metal member.

The metal member protection portion may also be characterized by covering at least a portion of the edge of the metal member.

The integrally molded product may also be characterized in that the resin molding is integrally molded around the glass plate by injection molding.

The integrally molded product may also be characterized in that the resin molding is integrally molded around the periphery of the glass plate and the metal member by injection molding.

This disclosure makes it possible to increase the adhesive strength between the metal member and the resin molding while preventing the metal member from coming into contact with the vehicle.

1 is a front view of an example of a configuration of a window glass for a vehicle window according to an embodiment. 2 is a cross-sectional view of a main part of one example of the configuration of a window glass for a vehicle window according to an embodiment, taken along the line II-II. FIG. 1 is a diagram showing a vehicle window glass according to an embodiment attached to a vehicle body. FIG. FIG. 1 is a cross-sectional view of a vehicle window glass according to a related art.

(Related Technology)
Prior to describing specific embodiments to which the present disclosure is applied, a vehicle window pane according to a technology related to the present disclosure will be described with reference to Fig. 4. Fig. 4 is a cross-sectional view of a main part of a vehicle window pane according to a related technology.

The vehicle window pane 90 shown in Figure 4 is attached to a vehicle body B9. The vehicle window pane 90 comprises glass 91, a resin molding 92, and a metal member 93. The resin molding 92 encompasses the lower end 91a of the glass 91. The lower end 92c of the resin molding 92 is supported by the vehicle body B9. The metal member 93 is provided on the surface of the resin molding 92 facing the vehicle body B9. The upper portion 93a of the metal member 93 and the vehicle body B9 are positioned with a predetermined distance L9 between them, and face each other.

Here, the vehicle window glass 90 may be subjected to an external force, causing the upper part 93a of the metal member 93 to approach the vehicle body B9. As a result, the upper part 93a of the metal member 93 may come into contact with the vehicle body B9.

Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the following embodiments. Furthermore, the following description and drawings have been simplified as appropriate for clarity.

(Embodiment)
An embodiment will be described with reference to Figures 1 to 3. Figure 1 is a front view of an example of the configuration of a vehicle window pane according to an embodiment. Figure 2 is a cross-sectional view of a main part of the example of the configuration of the vehicle window pane shown in Figure 1, taken along line II-II. Figure 3 is a view showing the vehicle window pane shown in Figure 1 attached to a vehicle body.

It should be understood that the right-handed xyz coordinate system shown in Figure 1 and other drawings is for the convenience of explaining the positional relationships of the components. Normally, the positive z-axis is vertically upward, and the xy plane is the horizontal plane, which is common between all drawings.

As shown in FIG. 1 , vehicle window glass 10 comprises a glass plate 1 and a resin molding 2 attached to the periphery of glass plate 1. The glass plate 1 and the resin molding 2 are integrally molded. Such vehicle window glass is also referred to as a MAW (Module Assy Window: registered trademark). Vehicle window glass 10 according to this embodiment is used as a fixed window in a vehicle, and is suitable for fixed windows such as the front bench glass and rear quarter glass of an automobile. Vehicle window glass 10 further comprises a metal member 3. When vehicle window glass 10 is installed in a vehicle, metal member 3 is positioned on the interior side of resin molding 2. Metal member 3 has higher rigidity than resin molding 2. An example of a vehicle part to which vehicle window glass 10 is installed is the body.

In the vehicle window glass 10 shown in FIG. 1 , the glass plate 1 is formed into a substantially quadrangular (trapezoidal) shape in plan view. However, the shape of the glass plate 1 is not limited to a substantially quadrangular shape and may be a substantially triangular shape, for example. The glass plate 1 may be inorganic glass or organic glass. Examples of inorganic glass that can be used without particular limitation include soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass. Among these, soda-lime glass is particularly preferred from the viewpoints of production cost and formability. The forming method of the glass plate 1 is not particularly limited. For example, in the case of inorganic glass, a glass plate formed by a float method or the like is preferred.
When the glass plate 1 is inorganic glass, the glass plate 1 may be either untempered glass or tempered glass. Untempered glass is produced by forming molten glass into a plate shape and slowly cooling it. Tempered glass is produced by forming a compressive stress layer on the surface of untempered glass, and may be either air-cooled tempered glass or chemically tempered glass.

When the tempered glass is physically tempered glass (e.g., air-cooled tempered glass), the glass surface may be strengthened by generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior of the glass through an operation other than slow cooling, such as rapidly cooling a glass sheet uniformly heated during bending from a temperature near its softening point. When the tempered glass is chemically tempered glass, the glass surface may be strengthened by generating compressive stress on the glass surface using an ion exchange method or the like after bending. Glass that absorbs ultraviolet or infrared light may also be used as glass sheet 1. Glass sheet 1 is preferably transparent, but may also be colored to the extent that transparency is not impaired.

The glass sheet 1 may have a curved shape such that the exterior side of the vehicle is convex when the vehicle window glass 10 is installed in a vehicle. The glass sheet 1 may have a single-curve shape, having been bent in only one direction, or a compound-curve shape, having been bent in two directions (for example, a predetermined direction and a direction perpendicular to the predetermined direction). Gravity forming, press forming, roller forming, or the like is used to bend the glass sheet 1. When the glass sheet 1 is bent to a predetermined curvature, the radius of curvature of the glass sheet 1 may be 1,000 to 100,000 mm.

The glass plate 1 may be a single glass plate, or may be, for example, laminated glass in which two or more glass plates are bonded together via an interlayer. The interlayer of the laminated glass is, for example, a known thermoplastic resin film made of polyvinyl butyral (PVB) or ethylene vinyl acetate copolymer (EVA). The interlayer of the laminated glass may be transparent or colored. The interlayer may also consist of two or more layers.

When glass plate 1 is laminated glass, the thickness of the glass located on the outside and the thickness of the glass located on the inside when glass plate 1 is installed in a vehicle may be the same or different. When glass plate 1 is installed in a vehicle, the thickness of the glass located on the outside is preferably 1.0 mm or more and 3.0 mm or less. A thickness of 1.0 mm or more for the glass located on the outside provides sufficient strength for stone chip resistance, etc., while a thickness of 3.0 mm or less prevents the laminated glass from becoming too heavy, which is preferable in terms of vehicle fuel economy. The thickness of the glass located on the inside is preferably 0.3 mm or more and 2.3 mm or less. A thickness of 0.3 mm or more for the glass located on the inside of the vehicle provides good handling, while a thickness of 2.3 mm or less prevents the glass from becoming too heavy. It is preferable that the thicknesses of the glass located on the outside and the glass located on the inside are each 1.8 mm or less, as this allows for both lightweight glass plate 1 and sound insulation. Note that when the thickness of the glass located on the inside is 1.0 mm or less, the glass located on the inside may be chemically strengthened glass. If the glass located on the inside is chemically strengthened glass, it is preferable that the compressive stress value of the glass surface be 300 MPa or more and the depth of the compressive stress layer be 2 μm or more.

When glass plate 1 is a single glass plate, it is preferable that glass plate 1 be air-cooled tempered glass, and in this case, it is preferable that the thickness of glass plate 1 be 1.0 mm or more and 5.0 mm or less.

Furthermore, when the glass plate 1 is made of organic glass, examples of the material for the organic glass include transparent resins such as polycarbonate or acrylic resin (e.g., polymethyl methacrylate).

The glass plate 1 may have a shielding layer 4 around the periphery of the surface facing the interior of the vehicle. The shielding layer 4 is formed, for example, by applying and firing a ceramic color paste containing a fusible glass frit containing a black pigment. This prevents adhesives and other materials applied to the glass plate 1 from being deteriorated by ultraviolet rays. Various appropriate films may also be formed on the main surfaces of the glass plate 1 to improve weather resistance and functionality such as hydrophilicity and water repellency.

As an example, the resin molding 2 is provided so as to surround the periphery of the glass plate 1. Examples of materials for the resin molding 2 include synthetic resins such as polyvinyl chloride (PVC) and thermoplastic elastomer (TPE). The resin molding 2 may be provided around the periphery of the glass plate 1 by placing the glass plate 1 in a mold having a cavity corresponding to the shape of the resin molding 2 and injecting the above-mentioned synthetic resin (molten synthetic resin) into the cavity. Alternatively, a resin molding 2 formed separately from the glass plate 1 may be fitted around the outer periphery of the glass plate 1.

When the resin molding 2 is integrally formed around the glass plate 1 by injection molding, the vehicle window glass 10 may be an integrally molded product in which the glass plate 1, resin molding 2, and metal member 3 are integrally molded, or a separately prepared metal member 3 may be attached to the vehicle window glass 10. In other words, the above-mentioned integrally molded product in which the glass plate 1, resin molding 2, and metal member 3 are integrally molded is, for example, one in which the resin molding 2 is integrally molded around the periphery of the glass plate 1 and the metal member 3 by injection molding.

The shape of the vehicle window pane 10 shown in Figure 1 is an example, and in this embodiment, the vehicle window pane 10 may have a shape other than that shown in Figure 1. The vehicle window pane 10 may be provided with a fixing member 5 for fixing the vehicle window pane 10 to the vehicle body as appropriate.

As shown in FIG. 2, the resin molding 2 comprises a main body 2a and a metal member protection portion 2b. The main body 2a encompasses the lower end 1a of the glass plate 1. The lower end 2c of the main body 2a may have a shape that allows it to be attached to the vehicle body as appropriate. The metal member protection portion 2b is located closer to the vehicle body than the main body 2a (here, in the negative y-axis direction) to where the vehicle window glass 10 can be attached.

The metal member 3 is provided on the vehicle body side of the resin molding 2 (here, in the negative y-axis direction). The metal member 3 has higher rigidity than the resin molding 2, and therefore provides rigidity to the resin molding 2. The metal member 3 has a main body 3a and a through hole 3b. The through hole 3b is preferably provided on the lower end 1a side of the main body 3a.

The metal member protection portion 2b fills the through hole 3b. That is, as described above, when the resin molding 2, glass plate 1, and metal member 3 are integrally molded using injection molding, the injected molten synthetic resin enters the through hole 3b, filling the through hole 3b with the same resin as the resin molding 2. The metal member protection portion 2b covers at least a portion of the metal member 3. The metal member protection portion 2b is located closer to the inside of the vehicle than the metal member 3. The arithmetic mean roughness Ra of the surface of the metal member protection portion 2b is preferably 1 μm or more and 30 μm or less, and preferably 10 μm or more and 20 μm or less. The surface of the metal member protection portion 2b, particularly the portion of the metal member protection portion 2b near the through hole 3b, may be roughened by etching, sandblasting, or the like.

The thickness t2b of the metal member protection portion 2b should be 1 mm or more, preferably 1.5 mm or more. The thickness t2b of the metal member protection portion 2b should be greater than the thickness t3 of the metal member 3. This allows the portion of the mold cavity corresponding to the metal member protection portion 2b to be filled, ensuring stable formation of the metal member protection portion 2b, when the resin molding 2 is produced using injection molding. Furthermore, the metal member protection portion 2b can be ensured to have sufficient thickness, allowing the metal member 3 to be protected by the metal member protection portion 2b.

The metal member protection portion 2b may also cover the periphery of the through-hole 3b of the metal member 3. The metal member protection portion 2b may also cover at least a portion of the edge 3c of the metal member 3. This allows the metal member 3 to be firmly mechanically fixed to the metal member protection portion 2b.

The resin molding 2 may also include a plurality of metal member protection portions 2b. The plurality of metal member protection portions 2b may be arranged at a predetermined interval along the bottom edge 10a of the vehicle window glass 10. The example of the resin molding 2 shown in Figure 1 includes two metal member protection portions 2b. The two metal member protection portions 2b are arranged at a predetermined interval along the bottom edge 10a of the vehicle window glass 10.

As shown in FIG. 3, when the vehicle window glass 10 is attached to the vehicle body B1, it is preferable that the thickness t2b of the metal member protection portion 2b be greater than the distance L1 between the metal member protection portion 2b and the vehicle body B1. Specifically, the distance L1 is the distance from the metal member protection portion 2b to a portion of the vehicle body B1 that faces the metal member protection portion 2b. It is also preferable that the distance L1 between the metal member protection portion 2b and the vehicle body B1 be 0.3 mm or greater and 2 mm or less, and preferably 0.8 mm or greater and 1.5 mm or less. If the thickness t2b of the metal member protection portion 2b is greater than the distance L1, the metal member protection portion 2b can be ensured to have sufficient thickness, allowing the metal member 3 to be protected by the metal member protection portion 2b.

As described above, with the configuration of the vehicle window glass 10, the metal member protection portion 2b fills the through hole 3b of the metal member 3 and covers at least a portion of the metal member 3. Therefore, even if the vehicle window glass 10 is subjected to an external force and the metal member 3 and the vehicle body B1 come close to each other, the metal member protection portion 2b protects the metal member 3. Compared to the vehicle window glass 90 shown in FIG. 4, the metal member 3 and the vehicle body B1 are less likely to come into contact. Therefore, contact between the metal member 3 and the vehicle body B1 can be reduced. Furthermore, the metal member protection portion 2b mechanically locks, i.e., mechanically hardens, the through hole 3b of the metal member 3, thereby increasing the adhesive strength between the metal member 3 and the resin molding 2.

The present invention is not limited to the above-described embodiment, and modifications can be made as appropriate without departing from the spirit of the invention. Furthermore, the present invention may be implemented by combining the above-described embodiment and examples thereof as appropriate.

10 Window glass for vehicle window 10a Lower edge 1 Glass plate 1a Lower end 2 Resin molding 2a Main body 2b Metal member protection portion 2c Lower end 3 Metal member 3a Main body 3b Through hole 3c Edge 4 Shielding layer 5 Fixing member t2b, t3 Thickness B1 Vehicle body L1 Distance

Claims (8)

A glass plate and
a resin molding provided on the peripheral edge of the glass plate,
A window glass for a vehicle window, wherein the glass plate and the resin molding are an integrally molded product,
Further, a metal member having higher rigidity than the resin molding is provided,
the metal member has a metal member body and a through hole provided in the metal member body on a lower end side of the glass plate ,
the resin molding includes a resin molding main body that encompasses a lower end of the glass plate, and a metal member protection portion that fills the through hole and covers at least a portion of the metal member ,
When the vehicle window glass is attached to a vehicle, the metal member main body is disposed on an inner side of the vehicle than the resin molding main body, and the metal member protection portion is disposed on an inner side of the vehicle than the metal member main body,
a thickness of the metal member protection portion at a portion near the through hole is greater than a thickness of the metal member main body at a portion near the through hole;
When the vehicle window glass is attached to the vehicle, a thickness of the portion of the metal component protection portion near the through hole is greater than a distance from the metal component protection portion to a portion of the vehicle facing the metal component protection portion.
Vehicle window glass. The thickness of the metal member protection portion in the vicinity of the through hole is 1 mm or more.
2. The vehicle window glass according to claim 1. the resin molding includes a plurality of the metal member protection portions,
The metal member protection portions are arranged at a predetermined interval on the lower edge of the vehicle window glass.
3. A vehicle window glass according to claim 1 or 2. The arithmetic mean roughness Ra of the surface of the portion of the metal member protection portion near the through hole is 1 to 30 μm.
4. The vehicle window glass according to claim 1. The metal member protection portion covers the periphery of the through hole of the metal member.
The vehicle window glass according to any one of claims 1 to 4 . The metal member protection portion covers at least a part of the edge of the metal member.
The vehicle window glass according to any one of claims 1 to 5 . The integrally molded product is formed by integrally molding the resin molding around the glass plate by injection molding.
The vehicle window glass according to any one of claims 1 to 6 . The integrally molded product is formed by integrally molding the resin molding around the glass plate and the metal member by injection molding.
The vehicle window glass according to any one of claims 1 to 7 .