Vehicle window glass unit and attachment

Abstract

Provided are a vehicle window glass unit and an attachment capable of suppressing the thickness of a vehicle window glass unit during transfer.　A vehicle window glass unit (100) according to one embodiment of the present invention comprises: a vehicle window glass (200); a mounting base (300) that is fixed as a result of the back surface thereof being adhered to the vehicle interior-side surface of the vehicle window glass (200); and an attachment (400) that surrounds the front surface and the side surface of the mounting base (300). The attachment (400) includes a front surface wall (420) and side walls (430a, 430b), constrictions (410a, 410b) are provided on the side surfaces of the front surface wall (420), and an on-vehicle member (500) is mounted by hooking a fitting part (510) of the on-vehicle member (500) on the constrictions (410a, 410b).

Description

Vehicle window glass unit and attachment

[0001] The present invention relates to a vehicle glazing unit and attachment.

[0002] BACKGROUND ART In-vehicle components such as a rearview mirror are sometimes attached to vehicle window glass such as a windshield. The in-vehicle components are attached to the windshield using, for example, a mounting base fixed to the interior surface of the windshield.

[0003] Patent Document 1 discloses a technique for fixing a rearview mirror and a sensor to the surface of the windshield on the inside of the vehicle.

[0004] Japanese Patent Application Laid-Open No. 2022-155010

[0005] In recent years, the layout of vehicle-mounted components such as rearview mirrors has been changing in line with their increasing performance. When vehicle-mounted components are attached to a mounting base after the layout change, there is a risk that they may interfere with mounting components such as a camera hood. To prevent this interference, it has been necessary to increase the thickness of the mounting base. However, increasing the thickness of the mounting base increases the thickness of the vehicle window glass unit in which the mounting base is fixed to the vehicle window glass, resulting in a problem of increased bulkiness during transportation.

[0006] In view of the above problems, an object of the present invention is to provide a vehicle window glass unit and an attachment that can reduce the thickness of the vehicle window glass unit during transportation.

[0007] A vehicle window glass unit according to one aspect of the present disclosure comprises: a vehicle window glass; a mounting base that is fixed by adhering its back surface to the interior surface of the vehicle window glass; and an attachment that surrounds a front surface of the mounting base that faces the back surface and a side surface that connects the front surface and back surface of the mounting base, wherein the attachment has a front wall that faces the front surface of the mounting base and a side wall that extends from the edge of the front wall toward the vehicle window glass, and a constriction is provided on the side surface of the front wall, and the vehicle-mounted member is attached by hooking a fitting portion of the vehicle-mounted member into the constriction.

[0008] An attachment according to one aspect of the present disclosure surrounds a front surface facing the back surface of a mounting base, which is fixed by adhering the back surface to the interior surface of a vehicle window glass, and a side surface connecting the front surface and back surface of the mounting base, and has a front wall facing the front surface of the mounting base and a side wall extending from the edge of the front wall toward the vehicle window glass, and a constriction is provided on the side surface of the front wall, and the vehicle-mounted member is attached by hooking a fitting portion of the vehicle-mounted member into the constriction.

[0009] According to the present invention, it is possible to provide a vehicle window glass unit and an attachment that can reduce the thickness of the vehicle window glass unit during transportation.

[0010] 4 is a bottom view of a vehicle glazing unit and an on-board member according to embodiment 1. FIG. 5 is a diagram showing an example of a vehicle glazing unit and an on-board member according to embodiment 1 in a state attached to a vehicle. FIG. 6 is a diagram showing an example of the configuration of the vehicle glazing unit according to embodiment 1 as seen from inside the vehicle. FIG. 7 is a three-view diagram of an attachment according to embodiment 1. FIG. 8 is a cross-sectional view taken along line V-V in FIG. 4. FIG. 9 is a cross-sectional view of a modified example of the attachment according to embodiment 1. FIG. 10 is a cross-sectional view of a modified example of the attachment according to embodiment 1. FIG. 11 is a front view of a modified example of the attachment according to embodiment 1. FIG. 12 is a front view of a modified example of the attachment according to embodiment 1. FIG. 13 is a bottom view of a modified example of a vehicle glazing unit and an on-board member according to embodiment 1. FIG. 14 is a perspective view of a modified example of the attachment according to embodiment 1. FIG. 15 is a diagram showing a modified example of a fitting portion provided in the on-board member.

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that for ease of understanding, the scale of each part in the drawings may differ from the actual scale. Misalignment in directions such as parallel, right-angled, orthogonal, horizontal, vertical, up-down, left-right, etc. is permitted to the extent that it does not impair the effects of the embodiments. The shape of corners is not limited to right angles and may be rounded like an arch. Parallel, right-angled, orthogonal, horizontal, and vertical may include approximately parallel, approximately right-angled, approximately orthogonal, approximately horizontal, and approximately vertical. Furthermore, in this specification, "approximately" refers to a state in which something is considered to have the same shape and dimensions when viewed by a human.

[0012] First Embodiment First, the configurations of a vehicle glazing unit 100 and an on-vehicle member 500 according to the first embodiment will be described with reference to Figures 1 and 2. Figure 1 is a bottom view of the vehicle glazing unit 100 and the on-vehicle member 500 according to the first embodiment. Figure 2 is a diagram showing an example of the vehicle glazing unit 100 and the on-vehicle member 500 according to the first embodiment in a state where they are attached to a vehicle.

[0013] As shown in Fig. 1, the vehicle glazing unit 100 includes a vehicle window glass 200, a mounting base 300, and an attachment 400. The vehicle glazing unit 100 is a window glass configured so that an on-vehicle member 500 as shown in Fig. 2 can be attached to a surface of the vehicle. The on-vehicle member 500 is, for example, a rearview mirror. The on-vehicle member 500 may also be a sensor, a camera, or the like.

[0014] The vehicle window glass 200 is a glass plate attached to a window of an automobile. The vehicle window glass 200 is, for example, a windshield. The vehicle window glass 200 may also be a rear glass, a side glass, a roof glass, or the like. Examples of glass plates that constitute the vehicle window glass 200 include soda lime glass, aluminosilicate glass, borate glass, lithium aluminosilicate glass, and borosilicate glass. The vehicle window glass 200 may also be a single glass plate or a laminated glass.

[0015] The mounting base 300 is a plate-shaped member made of resin or metal. Examples of metals that can be used to form the mounting base 300 include zinc, aluminum or their alloys, and stainless steel. These materials can be used alone or in combination. Furthermore, the stainless steel can be sintered stainless steel. Examples of resins that can be used to form the mounting base 300 include polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyolefins such as polyethylene (PE) and polypropylene (PP), polycarbonate (PC), polyamides (PA) such as nylon 6 and nylon 6,6, high-heat-resistant polyamides (PA6T / PA6I), polyimide (PI), polyetherimide (PEI), acrylonitrile-butadiene-styrene (ABS), polyacetal (POM), polyvinyl chloride (PVC), and polyphenylene sulfide (PPS).

[0016] The method for forming the mounting base 300 is not particularly limited. When the mounting base 300 is made of metal, it may be formed by, for example, die casting or casting. When the mounting base 300 is made of resin, it may be formed by, for example, injection molding. The mounting base 300 is adhered and fixed to the interior surface of the vehicle window glass 200. The method for adhering the mounting base 300 to the vehicle window glass 200 is not particularly limited. For example, the mounting base 300 may be adhered to the vehicle window glass 200 using an adhesive tape or an adhesive. The adhesive is not particularly limited as long as it is an adhesive used for adhering a window glass to a metal or resin part. When the mounting base 300 is made of metal, examples of the adhesive include polyurethane-based, silicone-based, and acrylic resin-based adhesives. When the mounting base 300 is made of resin, examples of the adhesive include epoxy-based, urethane-based, silicone-based, modified silicone-based, melamine-based, phenol-based, and acrylic-based adhesives.

[0017] Hereinafter, the surface of the mounting base 300 that is adhered to the interior surface of the vehicle window glass 200 will be referred to as the "rear surface." Furthermore, the surface of the mounting base 300 that faces the rear surface will be referred to as the "front surface." Furthermore, the surface that connects the front surface and rear surface of the mounting base 300 will be referred to as the "side surface." As shown in FIG. 1 , the front surface of the mounting base 300 is, for example, approximately parallel to the rear surface of the mounting base 300 and is the surface of the mounting base 300 that faces the attachment 400. Furthermore, the attachment 400 is a member that surrounds the front and side surfaces of the mounting base 300.

[0018] Hereinafter, the wall of the attachment 400 that faces the front of the mounting base 300 will be referred to as the front wall 420. Furthermore, the walls that extend from the edge of the front wall 420 of the attachment 400 toward the vehicle window glass 200 will be referred to as the side walls 430a, 430b. As shown in Fig. 1 , the front wall 420 of the attachment 400 is, for example, a wall that contacts the front of the mounting base 300. Furthermore, the side walls 430a, 430b of the attachment 400 are, for example, walls that extend from the edge of the front wall 420 substantially parallel to the vehicle window glass 200 and extend toward the vehicle window glass 200 from the middle.

[0019] The attachment 400 is a resin or metal member. The attachment 400 may be made of the same material as the mounting base 300, or may be made of a different material. Examples of metals that can be used to make the attachment 400 include zinc, aluminum or their alloys, and stainless steel. These materials may be used alone or in combination. Furthermore, stainless steel may be sintered stainless steel. Examples of resins that can be used to make the attachment 400 include polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyolefins such as polyethylene (PE) and polypropylene (PP), polycarbonate (PC), polyamides (PA) such as nylon 6 and nylon 6,6, high-heat-resistant polyamides (PA6T / PA6I), polyimide (PI), polyetherimide (PEI), acrylonitrile-butadiene-styrene (ABS), polyacetal (POM), polyvinyl chloride (PVC), and polyphenylene sulfide (PPS).

[0020] As shown in FIG. 1 , constrictions 410a and 410b are provided on the side surfaces of the front wall 420 of the attachment 400. The constrictions 410a and 410b are grooves provided on the side surfaces of the front wall 420. The constrictions 410a and 410b may be provided around the entire side surface of the front wall 420. When the front wall 420 of the attachment 400 has a substantially rectangular shape in a plan view, the constrictions 410a and 410b may be provided on two opposing side surfaces of the four side surfaces of the attachment 400. This allows the fitting portion 510 of the in-vehicle member 500 to be inserted into the constrictions 410a and 410b of the attachment 400 from above or the side of the vehicle window glass 200. Here, a substantially rectangular shape refers to a shape formed by four sides, such as a square, rectangle, trapezoid, or parallelogram, and each corner may be a rounded arc shape. The plan view refers to viewing an object from the normal direction of the surface of the vehicle window glass 200 facing the interior of the vehicle.

[0021] As shown in FIG. 2 , the in-vehicle member 500 includes a fitting portion 510. As shown in FIG. 1 , the fitting portion 510 includes a pair of catches 520a, 520b. The pair of catches 520a, 520b are shaped to mesh with the constrictions 410a, 410b. The fitting portion 510 is configured to be able to slide and fit into the attachment 400. When the fitting portion 510 is fitted into the attachment 400, the pair of catches 520a, 520b mesh with the constrictions 410a, 410b of the attachment 400, and the fitting portion 510 is hooked onto the attachment 400. The fitting portion 510 is hooked onto the attachment 400, thereby attaching the in-vehicle member 500 to the attachment 400.

[0022] As shown in FIG. 1 , the in-vehicle member 500 may have a fixing member 530 at the fitting portion 510. The fixing member 530 is a screw configured so that its tip abuts against the front wall 420 of the attachment 400. In this case, when the screw is tightened, a force acts in a direction that moves the in-vehicle member 500 away from the attachment 400, so that the pair of catches 520 a, 520 b and the constrictions 410 a, 410 b of the attachment 400 engage more firmly. Furthermore, when fastening with a screw, it is preferable to pre-thread the hole through which the screw passes in the attachment 400. By pre-threading the screw and tightening it, the attachment 400, the in-vehicle member 500, and the mounting base 300 are more firmly fixed together.

[0023] The vehicle window glass unit 100 is produced, for example, at a glass factory and then transported to an assembly factory where the on-board components 500 and the like are attached. Preferably, the vehicle window glass unit 100 is not attached with the attachment 400 at the glass factory, but is transported to another glass factory where the attachment 400 is attached. When the vehicle window glass unit 100 is transported without the attachment 400, the thickness of the vehicle window glass unit 100 during transportation can be reduced compared to when the attachment 400 is attached. Therefore, many vehicle window glass units 100 can be transported on one pallet.

[0024] Next, the effects expected when the attachment 400 is attached to the vehicle glazing unit 100 will be further described with reference to Figures 2 and 3. Figure 3 is a diagram showing an example of the configuration of the vehicle glazing unit 100 according to embodiment 1 as seen from inside the vehicle. In this specification, front, rear, left, right, and top and bottom correspond to the front, rear, left, right, top and bottom of a vehicle equipped with the vehicle glazing unit 100.

[0025] As shown in Fig. 2, an on-vehicle member 700 other than the on-vehicle member 500 may be attached to the vehicle window glass 200. The on-vehicle member 500 is a rearview mirror, and the on-vehicle member 700 is a camera. The on-vehicle member 700 is attached to the vehicle window glass 200 using a mounting member 600. The mounting member 600 is a camera hood. As shown in Figs. 2 and 3, the mounting member 600 may be attached above the mounting base 300 and the attachment 400. Also, as shown in Fig. 3, the mounting member 800 is a sensor bracket, and the mounting member 900 is an antenna bracket. A light-shielding area 1000 is formed at the positions where the mounting base 300 and the mounting members 600, 800, and 900 are provided.

[0026] The light-shielding region 1000 is formed, for example, by applying a ceramic color paste containing a black pigment and a fusible glass frit to the interior surface of the vehicle window glass 200 and then firing the paste. By providing the light-shielding region 1000, it is possible to prevent the adhesive or the like applied to the vehicle window glass 200 from being deteriorated by ultraviolet rays. In addition, the mounting base 300 and the like are less visible from outside the vehicle, thereby improving the design.

[0027] When the vehicle glazing unit is not provided with the attachment 400, i.e., when the in-vehicle member 500 is directly attached to the mounting base 300, if the vehicle glazing unit is configured to be attached by inserting the fitting portion 510 from above the mounting base 300, there is a risk of interference between the fitting portion 510 and the mounting member 600. In contrast, when the vehicle glazing unit 100 is provided with the attachment 400, the portion into which the fitting portion 510 is fitted (the constrictions 410a, 410b) is spaced apart from the interior surface of the vehicle glazing 200 by the thickness of the attachment 400, thereby suppressing interference between the fitting portion 510 and the mounting member 600. Therefore, even when the mounting member 600 is attached near the attachment 400, the in-vehicle member 500 can be attached smoothly.

[0028] Next, the shape of the attachment 400 will be described in more detail with reference to Figures 4 and 5. Figure 4 is a three-view diagram of the attachment 400 according to embodiment 1. Figure 5 is a cross-sectional view taken along line VV in Figure 4. The diagram at the top left of Figure 4 is a front view of the attachment 400. The diagram at the top right of Figure 4 is a side view of the attachment 400. The diagram at the bottom left of Figure 4 is a bottom view of the attachment 400.

[0029] As shown in Fig. 4, the front wall 420 of the attachment 400 may be provided with cutouts 450a, 450b, 450c, and 450d. As shown in Figs. 4 and 5, the cutouts 450a, 450b, 450c, and 450d are recesses provided on the surface of the front wall 420 of the attachment 400 that faces the vehicle-mounted member 500. If the attachment 400 is made of resin, providing the cutouts 450a, 450b, 450c, and 450d reduces the volume of the attachment 400 and makes it less likely for thermal shrinkage to occur after molding, thereby suppressing the occurrence of sink marks in the front wall 420 of the attachment 400. Furthermore, if the attachment 400 is made of metal, providing the cutouts 450a, 450b, 450c, and 450d can reduce the weight of the attachment 400.

[0030] 4, the attachment 400 may have a pair of claws 440a, 440b provided on the inner surface of the side wall. The pair of claws 440a, 440b are configured to engage with narrowings 310a, 310b provided on the side surface of the mounting base 300. In the example shown in FIG. 4, the pair of claws 440a, 440b engage with the narrowings 310a, 310b provided on the side surface of the mounting base 300, thereby hooking onto the mounting base 300. The attachment 400 is attached to the mounting base 300 by the pair of claws 440a, 440b hooking onto the mounting base 300. Furthermore, when the claws 440a, 440b have a wedge-shaped cross section as shown in FIG. 4, the angle α of the tip of the claw is preferably 50° or greater and 70° or less. When the angle α is within the above range, the claws 440a, 440b are tightly fitted to the mounting base 300 and are therefore less likely to come off, and the claws 440a, 440b themselves are less likely to be damaged during mounting and use.

[0031] The attachment 400 may be adhered to at least one of the mounting base 300 and the vehicle window glass 200 using an adhesive member, i.e., adhesive tape or adhesive. For example, adhesive may be applied to the edge of the side wall of the attachment 400, i.e., the portion that comes into contact with the vehicle window glass 200. By applying adhesive in this manner, the attachment 400 can be attached more firmly to the vehicle window glass 200. By adhering the attachment 400 to the mounting base 300 using adhesive, rattle of the attachment 400 can be suppressed.

[0032] 4 and 5 illustrate the case where a recess is provided on the surface of the front wall 420 of the attachment 400 facing the vehicle-mounted component 500. However, the shape of the recess provided in the attachment is not limited to the above. The volume of the recess provided in the front wall 420 is preferably 10% to 40% of the volume of the attachment 400, and more preferably 15% to 35%. Furthermore, the ratio b / a of the distance b [mm] between the recesses to the wall thickness (e.g., the side wall thickness) a [mm] of the attachment 400 shown in FIG. 5 is preferably 0.7 to 1.3. In this case, the volume of the recess is preferably 25% or less of the volume of the attachment 400. The above relationship effectively prevents sink marks and maintains the strength of the attachment 400.

[0033] <Modifications> Modifications of the recess provided in the attachment will be described with reference to Figures 6 to 12. Figures 6 and 7 are cross-sectional views of a modification of the attachment according to embodiment 1. Figures 8 to 11 are front views of a modification of the attachment according to embodiment 1. Figure 12 is a bottom view of a modification of the vehicle window glass unit according to embodiment 1.

[0034] The attachment 1100 shown in FIG. 6 has recesses 1150a and 1150b. The recesses 1150a and 1150b are through-holes that penetrate the front wall of the attachment 1100. Because the recesses 1150a and 1150b are through-holes, the attachment 1100 is lighter than the attachment 400 according to the first embodiment. Furthermore, the ratio b / a of the distance b [mm] between the recesses to the wall thickness a [mm] (e.g., the thickness of the side wall) of the attachment 1100 shown in FIG. 6 is preferably 0.7 or greater and 1.3 or less. In this case, the volume of the recess is preferably 25% or less of the volume of the attachment 1100. The above relationship effectively suppresses the occurrence of sink marks while maintaining the strength of the attachment 1100. Note that the above relationship is not limited to FIG. 6 and also applies to the configurations shown in FIG. 7 and subsequent figures.

[0035] 7 is provided with notches 1250a and 1250b. The notches 1250a and 1250b are recesses provided on the surface of the front wall of the attachment 1200 on the mounting base 300 side.

[0036] 8 is provided with a notch 1350. The notch 1350 is a through-hole that passes through the front wall of the attachment 1300 and has a C-shaped cross section.

[0037] 9 is provided with notches 1450a and 1450b. The notches 1450a and 1450b are through-holes that pass through the front wall of the attachment 1400 and have a rectangular cross section.

[0038] The attachment 1500 shown in FIG. 10 is provided with a notch 1550. The notch 1550 is a through-hole with a C-shaped cross section that penetrates the front wall of the attachment 1500. The screw position 1560 is a position where the tip of the screw abuts when the fixing member 530 provided on the in-vehicle member 500 is a screw. The notch 1550 is provided at a position that does not overlap with the screw position 1560. Therefore, the tip of the screw of the fixing member 530 abuts on the surface of the front wall of the attachment 1500 that faces the in-vehicle member 500, and the in-vehicle member 500 can be firmly attached to the attachment 1500.

[0039] The attachment 1600 shown in FIG. 11 is provided with a notch 1650. The notch 1650 is a through-hole that penetrates the front wall of the attachment 1600. FIG. 12 is a bottom view of the vehicle window glass unit 1700 to which the attachment 1600 shown in FIG. 11 is attached. As shown in FIG. 12 , an in-vehicle member 1800 including a fixing member 1830 is attached to the attachment 1600. The fixing member 1830 is a screw that is provided to extend from the in-vehicle member 1800 toward the mounting base 300. The screw passes through the notch 1650 of the attachment 1600 and the tip thereof abuts on the front surface of the mounting base 300. The notch 1650 is provided to overlap the screw position. In other words, the fixing member 1830 is fitted into the notch 1650.

[0040] 1, 10 and 12, the fixing members provided on the vehicle-mounted member are screws, but the fixing members are not limited to screws.

[0041] Modified examples of the fixing member provided on the vehicle-mounted member will be described with reference to Fig. 13 and Fig. 14. Fig. 13 is a perspective view of a modified example of the attachment according to embodiment 1. Fig. 14 is a diagram showing a modified example of the engagement portion provided on the vehicle-mounted member.

[0042] A protrusion 1960 is provided on the surface of the attachment 1900 shown in Fig. 13 facing the in-vehicle member. The in-vehicle member attached to the attachment 1900 has a fixing member 2030 at the fitting portion instead of the fixing member 530. The fixing member 2030 is a metal spring. Fig. 14 shows an example of the shape of the fixing member 2030 as viewed from the attachment 1900 side of the in-vehicle member. The fixing member 2030 is configured to be able to fit into a protrusion 1960 provided on the attachment 1900. In the example shown in Figs. 13 and 14 , the fixing member 2030 is fitted into the protrusion 1960, and the in-vehicle member is firmly attached to the attachment 1900.

[0043] The present invention has been described above in accordance with the above-mentioned embodiment, but the present invention is not limited to the configuration of the above-mentioned embodiment, and naturally includes various modifications, alterations, and combinations that can be made by a person skilled in the art within the scope of the invention claimed in the claims of this application.

[0044] This application claims priority based on Japanese Patent Application No. 2023-201596, filed November 29, 2023, the disclosure of which is incorporated herein in its entirety by reference.

[0045] 100, 1700 Vehicle window glass unit 200 Vehicle window glass 300 Mounting base 310a, 310b Narrowing 400, 1100, 1200, 1300, 1400, 1500, 1600, 1900 Attachment 410a, 410b Narrowing 420 Front wall 430a, 430b Side wall 440a, 440b Claws 450a, 450b, 450c, 450d, 1150a, 1150b, 1250a, 1250b, 1350, 1450a, 1450b, 1550, 1650 Notch 500, 700 Vehicle-mounted member 510 Fitting portion 520a, 520b Hook 530, 1830, 2030 Fixing member 600, 800, 900 Mounting member 1000 Light-shielding area 1560 Screw position 1960 Protrusion

Claims

1. A vehicle window glass unit comprising: a vehicle window glass; a mounting base fixed to the vehicle interior surface of the vehicle window glass by adhering its back surface to the vehicle interior surface; and an attachment surrounding a front surface facing the back surface of the mounting base and a side surface connecting the front surface and the back surface of the mounting base, wherein the attachment has a front wall facing the front surface of the mounting base and a side wall extending from an edge of the front wall toward the vehicle window glass, and a constriction is provided on the side surface of the front wall, and the vehicle-mounted member is attached by hooking a fitting portion of the vehicle-mounted member into the constriction.

2. A vehicle window glass unit as claimed in claim 1, wherein the attachment has at least one recess in the front wall.

3. A vehicle window glass unit as claimed in claim 1 or 2, further comprising an adhesive member for fixing the attachment to the mounting base or the vehicle window glass.

4. A vehicle window glass unit as claimed in claim 3, wherein the adhesive member is an adhesive provided between the side wall of the attachment and the vehicle window glass.

5. A vehicle window glass unit as described in claim 3, wherein the attachment has a through hole in the front wall, the vehicle-mounted member has a fixing member, the fixing member being a screw extending from the vehicle-mounted member towards the mounting base, and the screw passes through the through hole in the front wall and has a tip contacting the front surface of the mounting base.

6. A vehicle window glass unit as claimed in claim 1 or 2, wherein the front wall of the attachment is generally rectangular in plan view, and the constrictions are provided on two opposing faces of the four side faces of the front wall.

7. A vehicle window glass unit as claimed in claim 1 or 2, wherein the attachment has a claw on the inner surface of the side wall, and is attached to the mounting base by the claw of the attachment catching on a narrowing provided on the side of the mounting base.

8. A vehicle window glass unit as claimed in claim 1 or 2, wherein the attachment has a protrusion on the front wall, and the vehicle-mounted member is fixed by fitting a metal spring provided in a fitting portion of the vehicle-mounted member into the protrusion.

9. An attachment which encloses a front surface facing the rear surface of a mounting base which is fixed to the interior surface of a vehicle window glass by adhering the rear surface to the vehicle interior surface, and a side surface which connects the front surface and rear surface of the mounting base, and which has a front wall facing the front surface of the mounting base and a side wall extending from an edge of the front wall towards the vehicle window glass, wherein a constriction is provided on the side surface of the front wall, and the vehicle-mounted member is attached by hooking a fitting portion of the vehicle-mounted member into the constriction.