Resin-framed glass plate for vehicle windows and method for manufacturing the resin-framed glass plate

Abstract

Provided are a high-quality glass plate with a resin frame for a vehicle window and a method for producing a glass plate with a resin frame. A glass plate 10 with a resin frame for a vehicle window is provided with: a glass plate 12; a resin frame 14 provided at the peripheral edge part of the glass plate 12; and a decorative molding 16 arranged on the resin frame 14, the resin frame 14 being integrally molded with the glass plate 12 and the decorative molding 16. Between the resin frame 14 and the decorative molding 16, a spacer 18 which is solid at room temperature is arranged.

Description

[Technical Field]

[0001] The present invention relates to a resin-framed glass plate for vehicle windows, which has a decorative molding on the resin frame, and a method for manufacturing a resin-framed glass plate. [Background technology]

[0002] Glass sheets for vehicle windows, particularly automobile glass sheets, such as side glass fixed to a vehicle window opening, often have a resin frame integrally formed around the periphery thereof to fill the gap between the glass sheet and the vehicle window opening. This resin frame not only fixes the glass sheet to the vehicle window opening and seals the vehicle window opening, but also improves the appearance design of the glass sheet.

[0003] The resin frame is formed integrally with the glass plate, for example, by applying a primer (adhesive) to the peripheral edge of the glass plate, attaching the glass plate to a mold, and injecting molten resin into the cavity of the mold. This produces a resin-framed glass plate in which the resin frame is integrated with the peripheral edge of the glass plate. The applicant of the present application has disclosed such a framed window glass plate (product name: MAW (registered trademark: Module Assy Window)) in Patent Document 1 listed below and other publications.

[0004] On the other hand, some resin frames have decorative moldings (also called "decorative moldings") made of metal or resin on the surface of the resin frame that is visible from the outside, for the purpose of decorating or reinforcing the resin frame (see Patent Documents 2 and 3 below).

[0005] Patent Documents 2 and 3 focus on the "squeak" noise caused by the gap between the decorative molding and the frame and propose window glass with a decorative molding that does not produce "squeak" noise. Patent Document 1 discloses forming a liquid nylon-based thermosetting adhesive layer on the contact surface between the decorative molding and the frame and then thermosetting the adhesive, while Patent Document 2 discloses forming a layer of an oily liquid material, a material with fluidity, or a semi-solid material on the contact surface between the decorative molding and the frame. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-270021 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-1535 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-15555 Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, if a gap occurs between the decorative molding and the frame, in addition to the "creaking noise (also called peeling noise, same applies below)" problem, the following problem also occurs: When the decorative molding is pressed against the frame, the decorative molding easily deforms, resulting in a lack of rigidity.

[0008] To prevent the above-mentioned problems, Patent Document 1 uses a thermosetting adhesive. However, with this configuration, the adhesive strength of the thermosetting adhesive causes the decorative molding to deform in response to thermal shrinkage of the frame (so-called "sink marks"), which causes a problem of degrading the design of the exterior surface of the decorative molding. This distortion becomes more pronounced as the width of the decorative molding increases.

[0009] On the other hand, Patent Document 2 uses an oily liquid material, etc. However, with this configuration, depending on the flow (flow rate and pressure) of the molten resin injected into the mold, the liquid material may adhere to other glass surfaces, which may result in poor adhesion between the glass surface and the resin frame.

[0010] As described above, the window glass with decorative moldings disclosed in Patent Documents 2 and 3 have quality problems.

[0011] The present invention has been made in view of the above circumstances, and has an object to provide a high-quality resin-framed glass sheet for vehicle windows, and a method for manufacturing a resin-framed glass sheet. [Means for solving the problem]

[0012] According to one aspect of the present invention, in order to achieve the object of the present invention, there is provided a glass plate with a resin frame for a vehicle window, which comprises a glass plate, a resin frame provided on the periphery of the glass plate, and a decorative molding arranged in the resin frame, wherein the resin frame is integrally formed with the glass plate and the decorative molding, and a spacer that is solid at room temperature is arranged between the resin frame and the decorative molding.

[0013] According to another aspect of the present invention, in order to achieve the object of the present invention, there is provided a method for manufacturing a glass plate with a resin frame for a vehicle window, in which a glass plate, a resin frame, and a decorative molding are integrally formed, the decorative molding having a first surface and a second surface opposite the first surface, the method comprising attaching a spacer that is solid at room temperature to the second surface of the decorative molding, attaching the first surface of the decorative molding to a mold that forms the resin frame, and further attaching a glass plate to the mold and injecting molten resin into the cavity space of the mold, thereby manufacturing a glass plate with a resin frame in which a spacer is arranged between the resin frame and the decorative molding. [Effects of the Invention]

[0014] According to these aspects of the present invention, it is possible to provide a high-quality resin-framed glass sheet for vehicle windows and a method for producing a resin-framed glass sheet. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a plan view of a resin-frame-attached glass plate according to an embodiment of the present invention, as viewed from the vehicle exterior side. [Figure 2] FIG. 2 is a cross-sectional view of the resin-framed glass plate taken along line 2-2 of FIG. [Figure 3]FIG. 2 is a cross-sectional view of a mold for producing the resin-frame-attached glass plate shown in FIG. [Figure 4] 2 is a flowchart showing the steps of manufacturing the resin-frame-attached glass plate shown in FIG. [Figure 5] FIG. 10 is a cross-sectional view showing a modified example of a mold. [Figure 6] FIG. 10 is a cross-sectional view of a resin-frame-attached glass plate according to a first modified example. [Figure 7] FIG. 10 is a cross-sectional view of a resin-frame-attached glass plate according to a second modified example. [Figure 8] FIG. 10 is a cross-sectional view of a resin-frame-attached glass plate according to a third modified example. [Figure 9] FIG. 11 is a cross-sectional view of a resin-frame-attached glass plate according to a fourth modified example. [Figure 10] FIG. 10 is a front view of a decorative molding according to a fourth modified example, as seen from inside the vehicle. [Figure 11] FIG. 11 is a front view of a decorative molding according to another example of the fourth modified example, as seen from inside the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a resin-framed glass plate for a vehicle window and a method for manufacturing a resin-framed glass plate according to the present invention will be described with reference to the accompanying drawings.

[0017] Fig. 1 is a plan view of a resin-framed glass plate 10 for a vehicle window manufactured by a method for manufacturing a resin-framed glass plate according to an embodiment, as viewed from the vehicle exterior. Fig. 2 is a cross-sectional view of the resin-framed glass plate 10 shown in Fig. 1 taken along line 2-2. In the drawings used herein, the sizes of each component are exaggerated rather than shown at their actual dimensions in order to facilitate understanding of the present invention. In particular, the "spacers" and "sink marks in the resin frame," which will be described later, are exaggerated.

[0018] [Glass plate with resin frame] 1 and 2 show a resin-framed glass sheet 10 for vehicle windows, which is used, for example, as a rear quarter glass of an automobile. The resin-framed glass sheet 10 includes a glass sheet 12, a resin frame 14 provided around the periphery of the glass sheet 12, and a decorative molding 16 disposed on a surface 14A of the resin frame 14. The resin frame 14 is integrally formed with the glass sheet 12 and the decorative molding 16. The surface 14A of the resin frame 14 is the surface that faces the exterior of the vehicle when the resin-framed glass sheet 10 is fixed to a vehicle window opening (not shown), and functions as a design surface of the resin-framed glass sheet 10.

[0019] <Glass plate> The glass plate 12 shown in FIG. 1 is formed into a substantially rectangular shape in a plan view. However, the shape of the glass plate 12 is not limited to a substantially rectangular shape and may be a substantially triangular shape, for example. The glass plate 12 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 preferable in terms of manufacturing cost and formability. The forming method of the glass plate 12 is not particularly limited, but in the case of inorganic glass, a glass plate formed by a float method or the like is preferable.

[0020] When the glass plate 12 is made of inorganic glass, the glass plate 12 may be either untempered glass or tempered glass. Untempered glass is made by forming molten glass into a plate shape and slowly cooling it. Tempered glass is made by forming a compressive stress layer on the surface of untempered glass, and may be either air-cooled tempered glass or chemically tempered glass.

[0021] When the tempered glass is physically tempered glass (for example, air-cooled tempered glass), the glass surface may be tempered by a procedure other than slow cooling, such as rapidly cooling a uniformly heated glass sheet from a temperature near its softening point during bending, thereby generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior of the glass. On the other hand, when the tempered glass is chemically tempered glass, the glass surface may be tempered by generating compressive stress on the glass surface by an ion exchange method or the like after bending. Glass that absorbs ultraviolet or infrared rays may also be used. Furthermore, although transparency is preferred, the glass sheet may also be colored to the extent that transparency is not impaired.

[0022] The glass sheet 12 may have a single curve formed by bending in only one direction, or may have a complex curve formed by bending 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 12. When the glass sheet 12 is bent to a predetermined curvature, the radius of curvature of the glass sheet 12 may be 1,000 to 100,000 mm.

[0023] The glass plate 12 may be a single glass plate, or may be, for example, laminated glass formed by bonding two or more glass plates together via an interlayer film. Examples of interlayer films used in laminated glass include known thermoplastic resin films made of polyvinyl butyral (PVB) and ethylene vinyl acetate copolymer (EVA). The interlayer film in laminated glass may be transparent or colored. The interlayer film may also consist of two or more layers.

[0024] When the glass plate 12 is laminated glass, the thickness of the glass plate located on the outside and the thickness of the glass plate located on the inside when the glass plate 12 is installed in a vehicle may be the same or different. When the glass plate 12 is installed in a vehicle, the thickness of the glass plate located on the outside is preferably 1.0 mm or more and 3.0 mm or less. When the thickness of the glass plate located on the outside is 1.0 mm or more, sufficient strength is provided for stone chip resistance, etc., and when it is 3.0 mm or less, the mass of the laminated glass is not too large, which is preferable in terms of fuel efficiency of the vehicle. The thickness of the glass plate located on the inside is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the glass plate located on the inside of the vehicle is 0.3 mm or more, handling is improved. When the thickness of the glass plate located on the inside is 2.3 mm or less, the mass is not too large. When the thickness of the glass plate located on the outside and the glass plate located on the inside are each 1.8 mm or less, it is preferable because the glass plate 12 can be made lightweight and have good sound insulation properties. 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. When the glass located on the inside is chemically strengthened glass, it is preferable that the compressive stress value of the glass surface is 300 MPa or more and the depth of the compressive stress layer is 2 μm or more.

[0025] When the glass plate 12 is a single glass plate, the glass plate 12 is preferably air-cooled and tempered glass, and in this case, the thickness of the glass plate 12 is preferably 1.8 mm or more and 5.0 mm or less.

[0026] When the glass plate 12 is made of organic glass, examples of the material for the organic glass include transparent resins such as polycarbonate and acrylic resins (for example, polymethyl methacrylate).

[0027] <Resin frame> As an example, the resin frame 14 is provided so as to surround the entire periphery of the glass plate 12. Examples of materials for the resin frame 14 include synthetic resins such as polyvinyl chloride (PVC) and thermoplastic elastomer (TPE). The resin frame 14 is provided on the glass plate 12 by placing the glass plate 12 and the decorative molding 16 in a mold 30 (see FIG. 3) having a cavity corresponding to the shape of the resin frame 14, and then injecting the above-mentioned synthetic resin (molten synthetic resin) into the cavity.

[0028] As shown in Fig. 2, the resin frame 14 of this embodiment is a so-called three-sided molding having three inner surfaces 15A, 15B, and 15C that contact the exterior surface 13A, interior surface 13B, and end surface 13C of the glass plate 12. In a front view of the resin-framed glass plate 10 shown in Fig. 1, the thickness of the resin frame 14 in the area overlapping with the decorative molding 16 (described later) is, for example, 2.5 mm or more. A resin frame 14 having such a thickness can ensure the rigidity required of the resin frame 14. The upper limit of the thickness of the resin frame 14 is appropriately set depending on the allowable mass of the resin-framed glass plate 10 as a whole.

[0029] <Decorative Mall> The decorative molding 16 has, for example, an elongated or frame-like shape in a plan view and is provided along the surface 14A of the resin frame 14. By providing the decorative molding 16 on the surface 14A of the resin frame 14, the decorative molding 16 has a surface 16A as a design surface exposed from the surface 14A of the resin frame 14, a back surface 16B facing the surface 14A of the resin frame 14, and edge portions 16C and 16D on both sides that are embedded in the resin frame 14. The surface 16A functions as the first surface of the resin frame 14, and the back surface 16B functions as the second surface of the resin frame 14. In FIG. 2 , the distance (length) between the edge portions 16C and 16D, excluding the bent edge portions 16C and 16D, corresponds to the width W of the decorative molding 16. For example, the width W of the decorative molding 16 is preferably 30 mm or greater. The decorative molding 16 having such a width W can ensure a sufficient area for the surface 16A that functions as a design surface, thereby improving the design of the resin-framed glass plate 10.

[0030] The decorative molding 16 may be formed from a metal material by press molding, extrusion molding, pultrusion, or the like, or from a plastic material by extrusion molding, pultrusion, injection molding, or the like. Examples of the metal material include stainless steel, iron, steel, and aluminum. Examples of the plastic material include polyethylene resin, polypropylene resin, ethylene-vinyl acetate copolymer resin, polyamide resin, acrylic resin, vinylidene chloride resin, and polycarbonate resin. The thickness of the decorative molding 16 is preferably 0.3 mm to 0.8 mm when the decorative molding 16 is made of a metal material, and 1.0 mm to 3.5 mm when the decorative molding 16 is made of a plastic material. A decorative molding 16 with such a thickness is lightweight and provides the necessary rigidity.

[0031] <Spacer> In the resin-framed glass plate 10 of this embodiment, a spacer 18 is disposed between the resin frame 14 and the decorative molding 16 as shown in FIG.

[0032] The spacer 18 is disposed between the surface 14A of the resin frame 14 and the back surface 16B of the decorative molding 16. Specifically, the spacer 18 is disposed between the sink mark 14B on the surface 14A of the resin frame 14 and the back surface 16B. The spacer 18 is a solid member at room temperature and is, for example, configured as a sheet-like member. The thickness of the spacer 18 is preferably 0.3 mm or more. A spacer 18 having such a thickness is effective in reducing the generation or intensity of the "squeak noise" described below, thereby effectively suppressing the generation of the "squeak noise." The material of the spacer 18 is described below. The spacer 18 may be disposed continuously or intermittently along the decorative molding 16.

[0033] The spacer 18 is made of, for example, at least one material selected from thermoplastic elastomer, rubber, foamed resin, and metal.

[0034] Examples of thermoplastic elastomers include polystyrene-based thermoplastic elastomers (SBC, TPS), polyolefin-based thermoplastic elastomers (TPO), vinyl chloride-based thermoplastic elastomers (TPVC), polyurethane-based thermoplastic elastomers (TPU), polyester-based thermoplastic elastomers (TPEE, TPV), polyamide-based thermoplastic elastomers (TPAE, TPA), and polybutadiene-based thermoplastic elastomers (TPZ).

[0035] Examples of rubber include natural rubber (NR), styrene butadiene rubber (SBR), chloroprene rubber (CR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene propylene diene rubber (EPDM), urethane rubber (U), and silicone rubber (Si).

[0036] Examples of foamed resins include urethane-based (PUR-based) foams such as flexible foams and rigid foams, polystyrene-based (PS-based) foams such as BPS foam, XPS foam, and PSP foam, and olefin-based foams such as PE foam, PP foam, and EVA foam. PVC foam, EPDM foam, and acrylic foam are also applicable.

[0037] Examples of metals include aluminum (AL), irons (including stainless steel), copper, brass, and lead.

[0038] The spacer 18 configured as described above is, for example, attached to the rear surface 16B of the decorative molding 16 with a double-sided adhesive tape 20, and is thereby positioned and attached to the rear surface 16B of the decorative molding 16.

[0039] Although the double-sided adhesive tape 20 is not an essential component of the resin-framed glass plate 10, using the double-sided adhesive tape 20 is preferable because it allows for easy positioning of the spacer 18 relative to the decorative molding 16. Furthermore, if the sheet-like substrate constituting the double-sided adhesive tape 20 can be used as the spacer 18, the double-sided adhesive tape 20 itself functions as the spacer 18. In this case, a single-sided adhesive tape having an adhesive layer only on the side facing the decorative molding 16 may be used instead of the double-sided adhesive tape 20. Furthermore, instead of the double-sided adhesive tape 20, a known adhesive may be used to adhere the spacer 18 to the back surface 16B of the decorative molding 16, or engaging and engaged portions such as recesses and protrusions may be provided to position the decorative molding 16 and the spacer 18 relative to each other, thereby positioning the spacer 18 relative to the decorative molding 16.

[0040] [Method of manufacturing a glass plate with a resin frame] Next, a method for manufacturing a resin-framed glass plate 10 according to one embodiment will be described with reference to a mold 30 shown in Fig. 3 and a flowchart showing the manufacturing steps shown in Fig. 4. Note that Fig. 3 shows a diagram in which molten resin 34 that will become the resin frame 14 has already been injected into a cavity 32 of the mold 30, but the following description will start from the state before the molten resin 34 is injected into the cavity 32.

[0041] The manufacturing method of this embodiment is roughly divided into a mounting step (S100) and a resin frame molding step (S200).

[0042] First, in the mounting step (S100), as shown in Fig. 3, the front surface 16A of the decorative molding 16 is mounted on the inner surface 38 of the lower mold 36 that constitutes the mold 30. A recess 38A is formed in the inner surface 38, and this recess 38A functions as a dedicated mounting portion for disposing the decorative molding 16 in the resin frame 14. At this time, it is preferable that the spacer 18 be previously adhered to the back surface 16B of the decorative molding 16 with double-sided adhesive tape 20.

[0043] Next, the peripheral edge 13D of the glass plate 12 is attached to a predetermined position in the lower mold 36. After this, the upper mold 40 of the mold 30 is fixed to the lower mold 36. As a result, a cavity 32 is formed between the lower mold 36 and the upper mold 40, and the decorative molding 16 with the spacers 18 and the peripheral edge 13D of the glass plate 12 are housed in this cavity 32. This completes the attachment step (S100).

[0044] Next, in the resin frame molding step (S200), molten resin 34 is injected into cavity 32 from a resin injection port 42 provided in upper mold 40, for example.

[0045] As an example, the resin injection port 42 is provided in the upper mold 40 facing the lower mold 36. As a result, the molten resin 34 injected from the resin injection port 42 is injected into the cavity 32 while directly colliding with the spacer 18. When the molten resin 34 injected from the resin injection port 42 is injected into the cavity 32 while directly colliding with the spacer 18, the decorative molding 16 can be pressed against the lower mold 36 via the spacer 18 to form a tight seal. This is preferable because it prevents burrs from forming at the boundary between the resin frame 14 and the decorative molding 16. The molten resin 34 then gradually fills the cavity 32. Finally, the cavity 32 is filled with the molten resin 34. The lower mold 36 and the upper mold 40 are then separated. This completes the resin-framed glass plate 10 shown in FIG. 1 . This completes the resin frame molding step (S200).

[0046] 5, a resin injection port 37 communicating with a resin injection port 43 formed in an upper mold 40 may be formed in a lower mold 36, and the molten resin 34 may be injected into the cavity 32 through the resin injection ports 43 and 37. The molten resin 34 injected from the resin injection port 42 may be injected into the cavity 32 without directly colliding with the spacer 18. In the case where the molten resin 34 injected from the resin injection port 42 does not directly collide with the spacer 18, the resin injection port 42 may be provided in the lower mold 36.

[0047] The glass plate 10 with a resin frame manufactured by the above manufacturing process has a spacer 18 disposed between the resin frame 14 and the decorative molding 16, and this spacer 18 can effectively suppress the "creaking noise" that previously occurred.

[0048] Furthermore, since the spacer 18 is a solid component at room temperature, the conventional problem of the flow (flow rate and pressure) of the molten resin injected into the mold causing the liquid material to adhere to other glass surfaces and resulting in poor adhesion can be eliminated.

[0049] Furthermore, since the amount of molten resin 34 filled in the manufactured resin-framed glass plate 10 can be reduced by the volume of the spacers 18, it is possible to suppress the amount of depression caused by the sink marks 14B on the surface 14A of the resin frame 14. As a result, the gap caused by the sink marks 14B that occurs between the spacers 18 and the resin frame 14 is smaller than the conventional gap that occurs between the decorative molding and the resin frame, further suppressing the generation of creaking noise.

[0050] Furthermore, since the gap caused by the sink marks 14B is reduced as described above, the problem of distortion of the surface 16A of the decorative molding 16 caused by the sink marks 14B can be resolved. Here, the decorative molding 16 of this example has a width W of 30 mm or more to improve the design of the resin-framed glass plate 10. Conventional decorative moldings with such a width would cause significant distortion in the decorative molding, but in this example, the presence of the spacers 18 can significantly suppress this distortion.

[0051] Therefore, according to the embodiment, it is possible to provide a high-quality resin-framed glass sheet 10 for a vehicle window and a method for manufacturing the resin-framed glass sheet 10.

[0052] Furthermore, since the spacer 18 in this example is a sheet-like member, it can be attached evenly to the rear surface 16B of the wide decorative molding 16. As a result, the gap that occurs between the spacer 18 and the resin frame 14 can be effectively sealed, which also helps to suppress the generation of "creaking noise."

[0053] Furthermore, it is preferable to select and use a material for the spacer 18 that is non-adhesive to the resin frame 14. A material that is non-adhesive to the resin frame 14 refers to a material that is easily released from the resin frame 14 and does not or does not adhere to the material of the resin frame 14. With such a spacer 18, even if a sink mark 14B occurs in the resin frame 14, the spacer 18 does not deform to follow the sink mark 14B, thereby reliably preventing distortion of the decorative molding 16 that would otherwise occur if the spacer 18 were to deform to follow the resin frame 14. As a result, the design of the resin-framed glass plate 10 is further improved. Below, we will explain the material of the spacer 18 that achieves the above-mentioned non-adhesive property.

[0054] <When the resin frame is made of PVC> Examples of materials for the spacer 18 include polystyrene thermoplastic elastomers (SBC, TPS), polyolefin thermoplastic elastomers (TPO), polyurethane thermoplastic elastomers (TPU), polyester thermoplastic elastomers (TPEE, TPC), polyamide thermoplastic elastomers (TPAE, TPA), polybutadiene thermoplastic elastomers (TPZ), styrene butadiene rubber (SBR), chloroprene rubber (CR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene propylene rubber (EPDM), urethane rubber (U), silicone rubber (Si), flexible urethane foam, hard urethane foam, BPS foam, XPS foam, PSP foam, PE foam, PP foam, EVA foam, PF foam, EPDM foam, acrylic foam, aluminum (AL), iron (including SUS), copper, brass, and lead.

[0055] <When the resin frame is made of TPE> Examples of materials for the spacer 18 include thermoplastic vinyl chloride elastomer (TPVC), styrene butadiene rubber (SBR), chloroprene rubber (CR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene propylene rubber (EPDM), urethane rubber (U), silicone rubber (Si), soft urethane foam, hard urethane foam, BPS foam, XPS foam, PSP foam, EVA foam, PF foam, EPDM foam, acrylic foam, aluminum (AL), iron (including SUS), copper, brass, and lead.

[0056] Furthermore, as an example, the spacer 18 is preferably a member that is elastically deformable in the thickness direction. In the case of such an elastically deformable spacer 18, it elastically deforms in the thickness direction due to the pressure of the molten resin when the molten resin is injected, and then elastically returns to its original shape in response to the contraction of the molten resin. This eliminates or minimizes the gap between the spacer 18 and the sink portion 14B of the resin frame 14, further reducing the occurrence and magnitude of the "squeaking noise." In addition, by selecting a material with sound-absorbing properties for the spacer 18, the occurrence of the "squeaking noise" can be significantly reduced.

[0057] <Variations> Fig. 6 is a cross-sectional view of a resin-framed glass plate 50 according to a first modified example of the present embodiment. In describing this resin-framed glass plate 50, the same or similar components as those in the resin-framed glass plate 10 shown in Figs. 1 and 2 are designated by the same reference numerals, and descriptions of the same or similar components will be omitted.

[0058] The resin-framed glass plate 50 shown in Fig. 6 differs from the resin-framed glass plate 10 shown in Fig. 1 and Fig. 2 in that string-like or block-like spacers 52 with a rectangular cross section are disposed instead of the sheet-like spacers 18. These spacers 52 are also solid at room temperature and are made of the same material as the spacers 18. Furthermore, like the spacers 18, these spacers 52 may be disposed continuously or intermittently along the decorative molding 16.

[0059] Even with such string-like spacers 52, it is possible to obtain the same effects as with the sheet-like spacers 18 (reduction in the occurrence or magnitude of "creaking noise" and reduction in the occurrence or magnitude of distortion). Note that while Fig. 6 illustrates the spacer 18 having a rectangular cross-sectional shape, this is just one example, and the cross-sectional shape of the spacer may be, for example, circular or another shape.

[0060] 7 is a cross-sectional view of a resin-framed glass plate 60 according to a second modified example of the present embodiment. In describing this resin-framed glass plate 60, the same or similar components as those in the resin-framed glass plate 10 shown in FIGS. 1 and 2 are designated by the same reference numerals, and descriptions of the same or similar components will be omitted.

[0061] The difference between the resin-framed glass plate 60 shown in Figure 7 and the resin-framed glass plate 10 shown in Figures 1 and 2 is that the resin frame 64 has a space 62 formed therein by gas injection.

[0062] Gas injection is a molding method in which nitrogen gas is injected during the pressure holding process after filling the mold with molten resin during injection molding, thereby maintaining pressure from inside the molten resin. This method can reduce the occurrence of sink marks, warpage, and burrs.

[0063] The resin-framed glass plate 60 having the resin frame 64 formed by gas injection reduces the occurrence of sink marks in the resin frame 64, effectively reducing the occurrence and intensity of creaking noise. Furthermore, the thickness of the spacer 18 can be reduced by the amount of expansion caused by the gas injection, thereby reducing the weight of the resin-framed glass plate 60.

[0064] Fig. 8 is a cross-sectional view of a resin-framed glass plate 70 according to a third modified example of the present embodiment. In describing this resin-framed glass plate 70, the same or similar components as those in the resin-framed glass plate 10 shown in Figs. 1 and 2 are designated by the same reference numerals, and descriptions of the same or similar components will be omitted.

[0065] The difference between the resin-framed glass plate 70 shown in Figure 8 and the resin-framed glass plate 10 shown in Figures 1 and 2 is that the resin frame 14 of the resin-framed glass plate 10 has a three-sided molding, while the resin frame 72 of the resin-framed glass plate 70 has a two-sided molding.

[0066] The two-sided molding is a molding in which the resin frame 72 has two inner surfaces 73B, 73C that contact the interior surface 13B and end surface 13C of the glass plate 12, and the resin frame 72 does not protrude from the exterior surface 13A of the glass plate 12. Compared to a three-sided molding, the two-sided molding allows for a flush surface for the car body because the resin frame 72 does not protrude outside the car body.

[0067] The resin-framed glass plate 70 having two-sided moldings has a smaller depression of the sink mark 14B formed in the resin frame 72 than the resin-framed glass plate 10 having three-sided moldings. This is for the following reason.

[0068] In other words, when the resin frame 14 with a three-sided molding shrinks after injection molding, sink marks 14B do not occur on the inner surface 15A that contacts the highly rigid glass plate 12, but on the opposite surface, the front surface 14A (see FIG. 2). In contrast to this three-sided molding, in the case of a two-sided molding, the glass plate 12 is not present in the thickness direction of the main body portion 72A of the resin frame 72, so there is no influence from the glass plate 12. As a result, sink marks occur mainly on the entire surface or inner surface 73A of the resin frame 72. As a result, the gap that occurs between the decorative molding 16 and the resin frame 72 is smaller than in the case of a three-sided molding.

[0069] Even in the case of such a two-sided molding, by placing a spacer 18 that is solid at room temperature between the resin frame body 72 and the decorative molding 16, the occurrence or volume of the "creaking noise" can be reduced compared to the case of a conventional two-sided molding.

[0070] 9 is a cross-sectional view of a resin-framed glass plate 80 according to a fourth modified example of the present embodiment. In describing this resin-framed glass plate 80, the same or similar components as those in the resin-framed glass plate 10 shown in FIGS. 1 and 2 are designated by the same reference numerals, and descriptions of the same or similar components will be omitted.

[0071] 9 differs from the resin-framed glass plate 10 shown in Figures 1 and 2 in that the resin-framed glass plate 80 has a wide region 16E in at least a part of the decorative molding 16, the wide region 16E having a width of 30 mm or more in the front-to-rear direction of the vehicle in a front view, in the region indicated by the reference symbol 16E in Figure 1, and that a primer 90 is applied to the surface of the decorative molding 16 facing the resin frame 72 instead of the sheet-like spacer 18. The primer 90 also hardens after application and becomes a solid member at room temperature.

[0072] The primer 90 is, for example, a mixture of at least one or two or more types of polyurethane, polyester, polyamide, A-phenol, acrylic, epoxy, cyanoacrylate, rubber, etc., and may be used as is, dissolved in a solvent, or dispersed in water as a so-called emulsion.

[0073] The primer 90 is preferably applied to an area of ​​50% to 80% of the area of ​​the wide region 16E on the surface of the decorative molding 16 facing the resin frame 72. If the area to which the primer 90 is applied is 50% or more of the area of ​​the wide region 16E, the gap between the decorative molding 16 and the resin frame 72 can be sufficiently reduced, effectively reducing the occurrence or intensity of creaking noise. If the area to which the primer 90 is applied is 80% or less of the area of ​​the wide region 16E, the decorative molding 16 will not be distorted even if the resin frame 72 thermally shrinks during molding, making it possible to provide a high-quality glass plate with a resin frame for vehicle windows.

[0074] Furthermore, it is preferable that the region to which the primer 90 is applied in the wide region 16E overlaps with the wide region 16E in a front view and that the thickness of the resin frame 72 is 3.0 mm or less. The thickness of the resin frame 72 refers to the distance from the vehicle exterior surface of the glass plate 12 to the vehicle exterior surface of the resin frame 72.

[0075] 10 and 11 show a front view of a decorative molding according to a fourth modified example and a front view of a decorative molding according to another example of the fourth modified example, respectively. FIGS. 10 and 11 show the decorative molding as seen from the vehicle interior side. The decorative moldings shown in FIGS. 10 and 11 are decorative moldings used on windows on the opposite side of the vehicle from the decorative molding used in the resin-framed glass plate 10 for a vehicle shown in FIG. 1. As shown in FIG. 10, the primer 90 may be applied to one area of ​​the wide region 16E, or multiple areas as shown in FIG. 11, as long as the area covers 50% to 80% of the area of ​​the wide region 16E. Furthermore, as shown in FIG. 11, the primer 90 may also be applied to areas of the decorative molding 16 other than the wide region 16E.

[0076] Even when the primer 90 is applied to an area of ​​50% to 80% of the area of ​​the wide region 16E of the decorative molding 16, the same effect as that of the sheet-like spacer 18 (reduction in the occurrence or magnitude of "creaking noise", reduction in the occurrence or magnitude of distortion) can be obtained.

[0077] An embodiment of a resin-framed glass plate and an embodiment of a method for manufacturing a resin-framed glass plate according to the present invention have been described above. However, the technology of the present invention is not limited to the embodiment, and several improvements or modifications may be made without departing from the gist of the present invention. The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2020-185634, filed on November 6, 2020, are hereby incorporated by reference as the disclosure of the specification of the present invention. [Explanation of symbols]

[0078] 10...glass plate with resin frame, 12...glass plate, 14...resin frame, 16...decorative molding, 16E...wide area, 18...spacer, 20...double-sided adhesive tape, 30...mold, 31...mold, 32...cavity, 34...molten resin, 36...lower mold, 37...resin injection port, 38...inner surface, 40...upper mold, 42...resin injection port, 43...resin injection port, 50...glass plate with resin frame, 52...spacer, 60...glass plate with resin frame, 62...space portion, 64...resin frame, 70...glass plate with resin frame, 72...resin frame, 80...glass plate with resin frame, 90...primer

Claims

1. A resin-framed glass plate for a vehicle window, comprising: a glass plate; a resin frame provided on a peripheral edge of the glass plate; and a decorative molding disposed on the resin frame, wherein the resin frame is integrally formed with the glass plate and the decorative molding, a spacer that is solid at room temperature is disposed between the resin frame and the decorative molding; the spacer is a sheet-like member made of at least one material selected from the group consisting of a thermoplastic elastomer, a rubber, a foamed resin, and a metal; the spacer is made of a material that is non-adhesive to the resin frame; A gap is formed between the resin frame and the spacer. Glass panes with resin frames for vehicle windows.

2. The decorative molding has at least a portion having a wide region with a width of 30 mm or more. The glass plate with a resin frame for a vehicle window according to claim 1.

3. When the decorative molding is made of a metal material, the thickness of the decorative molding is 0.3 mm or more and 0.8 mm or less; When the decorative molding is made of a plastic material, the thickness of the decorative molding is 1.0 mm or more and 3.5 mm or less. The glass plate with a resin frame for a vehicle window according to claim 1 or 2.

4. The thickness of the spacer is 0.3 mm or more. The glass plate with a resin frame for a vehicle window according to any one of claims 1 to 3.

5. A method for manufacturing a resin-framed glass plate for a vehicle window, in which a glass plate, a resin frame, and a decorative molding are integrally formed, comprising: The decorative molding has a first surface and a second surface opposite to the first surface, a spacer that is solid at room temperature is attached to the second surface of the decorative molding, the decorative molding is attached to a mold that forms the resin frame so that the first surface of the decorative molding faces the mold, and a glass plate is attached to the mold; a resin-framed glass plate in which the spacer is disposed between the resin frame and the decorative molding is manufactured by injecting molten resin into the cavity space of the mold; the spacer is a sheet-like member made of at least one material selected from the group consisting of a thermoplastic elastomer, a rubber, a foamed resin, and a metal; the spacer is made of a material that is non-adhesive to the resin frame; A gap is formed between the resin frame and the spacer. A method for manufacturing a glass plate with a resin frame for a vehicle window.

6. The spacer is attached to the second surface of the decorative molding by adhesive tape, and is positioned and attached so as to face the second surface of the decorative molding. The method for producing the resin-framed glass plate for a vehicle window according to claim 5.

7. The decorative molding has at least a portion having a wide region with a width of 30 mm or more. The method for producing the resin-framed glass plate for a vehicle window according to claim 5 or 6.

8. When the decorative molding is made of a metal material, the thickness of the decorative molding is 0.3 mm or more and 0.8 mm or less, When the decorative molding is made of a plastic material, the thickness of the decorative molding is 1.0 mm or more and 3.5 mm or less. A method for producing the resin-frame-attached glass plate for a vehicle window according to any one of claims 5 to 7.

9. When viewed from the front, the thickness of the resin frame in a region overlapping with the decorative molding is 2.5 mm or more. A method for producing the resin-frame-attached glass plate for a vehicle window according to any one of claims 5 to 8.

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