JP6377469B2 - Application method of window glass and liquid for functional film - Google Patents

Description

  The present invention relates to a window glass and a method for applying a functional film liquid.

  In recent years, various functional films such as an ultraviolet absorbing film are formed on a window glass attached to an automobile, and the added value as a window glass is improved. However, the window glass attached to the door so as to be openable and closable has a problem that if a functional film is formed over the entire surface, the upper side is damaged. In other words, when the window glass is closed, the vicinity of the upper side of the window glass comes into contact with a contact portion such as a glass run provided on the upper part of the door frame, but the functional film is rubbed against the contact portion, resulting in scratches. There is a problem that the appearance is deteriorated.

  On the other hand, for example, in the window glass described in Patent Document 1, a non-application area where the functional film liquid is not applied is formed near the upper side, and the functional film liquid is applied to the lower application area. Yes. And, by making the width of the non-application area larger than the width stored in the storage portion, the portion to which the functional film liquid is applied is prevented from being stored in the storage portion and is prevented from being damaged. ing.

  When applying such a functional film solution, Patent Document 1 employs a flow coating method. In this flow coating method, the functional film liquid sprayed from the nozzle is applied to the window glass as follows. That is, the functional liquid is applied while moving the nozzle on one side of the window glass from below to above, and when the nozzle reaches the upper edge of the application area, the nozzle moves laterally along the upper edge of the application area. Then, the functional film coating solution is applied. At this time, since the functional film liquid flows downward, the functional film liquid is applied to the whole from the upper edge of the application region downward. When the functional film liquid ejected from the nozzle reaches the other side, the functional film liquid is applied along the side while moving the nozzle downward.

JP 2014-111453 A

  By the way, this inventor discovered that there existed the following problems in this flow coat method. That is, at the corner portion where the side of the window glass and the upper edge of the application region intersect, the functional film solution is applied while changing the nozzle traveling direction by approximately 90 degrees. At this time, if the discharge pressure from the nozzle is reduced and the moving speed of the nozzle is not reduced, the functional film liquid will protrude, etc., so the functional film liquid cannot be applied accurately along the corner portion. I found. However, if it does in this way, there will be a problem that application time will become long and manufacturing efficiency will fall, and it leads also to an increase in manufacturing cost by extension.

  The present invention has been made in order to solve the above-described problem, and it is possible to reduce the coating time when the functional film solution is applied to a region spaced a predetermined width from the upper side of the window glass. It is an object of the present invention to provide a method for coating a window glass and a functional film liquid.

  The window glass according to the present invention has an upper side and a pair of side sides, is openable and closable at a door of an automobile, and is a window glass in which the upper side contacts a contact portion of an upper frame of the door. A functional film formed on a part of the surface, and an outer edge of the functional film extends along the upper side with a predetermined width from the upper side and the pair of side sides. The side part which extends, The corner part which connects the said center part and each said side part is provided, At least one of the said corner parts is formed in circular arc shape.

  In the window glass, a virtual line extending along the upper side is defined with a predetermined width from the upper side, the corner portion of the functional film is disposed below the virtual line, A non-coating region where the functional film is not applied may be formed between the virtual line and the corner portion.

  In each of the window glasses, at least a part of the corner portion of the functional film may be disposed on the upper side beyond the virtual line.

  In each said window glass, the curvature radius of the said corner part shall be 5 mm or more and 30 mm or less.

  In each of the window glasses, each side is configured to be slidable in a recess formed on both sides of the upper frame, and both sides and corners of the functional film are in the recess. It can be contained.

  The functional film liquid coating method according to the present invention has an upper side and a pair of side sides, and can be opened and closed in an automobile door, and the upper side of the door contacts the contact portion of the upper frame of the door. A method of applying a functional film solution, wherein the window glass includes a step of defining a virtual line extending from the upper side and extending along the upper side, and a nozzle relative to the window glass. And discharging the functional film liquid from the nozzle while moving the first liquid film from the lower side to the upper side along the one side of the window glass. And applying a second path along the imaginary line and a third path from the upper side to the lower side along the other side, and the outer edge of the functional film includes: A central portion extending along the imaginary line; A side portion extending along a pair of sides, a corner portion connecting the central portion and each side portion, a transition portion from the first path to the second path, and In at least one of the transition portions from the second path to the third path, the corner of the functional film has an arc shape by moving the nozzle without reducing the discharge pressure of the functional film liquid. Is formed.

  According to the present invention, the application time can be shortened when the functional film solution is applied to a region spaced a predetermined width from the upper side of the window glass.

It is a front view of one Embodiment of the window glass which concerns on this invention. It is sectional drawing of a laminated glass. It is a front view of a door. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 5 is a sectional view taken along line BB in FIG. 3. It is the schematic of a coating device. It is a figure explaining the flow coat method. It is a figure which shows the application | coating path | route (a) of a functional liquid, and the area | region (b) to which the functional liquid was apply | coated. It is a figure which shows the application | coating path | route (a) of a functional liquid, and the area | region (b) to which the functional liquid was apply | coated. It is a figure which shows the calculation method of the curvature radius of a corner part. It is a graph which shows the relationship between the liquid quantity of a functional liquid, and the curvature radius of a corner part.

  Hereinafter, an embodiment of a window glass according to the present invention will be described with reference to the drawings. The window glass which concerns on this embodiment is a window glass which can be opened and closed in the door of a motor vehicle, and is a window glass by which an upper side and a side are accommodated in the upper frame of a door. And this window glass is comprised with the glass plate by which the functional film | membrane was formed into the film inside surface. Hereinafter, this window glass will be described in detail.

<1. Glass plate>
As shown in FIG. 1, the glass plate constituting the window glass is composed of a pair of side edges 1 and 2 extending in the vertical direction, an upper side 3 connecting upper ends of both side edges 1 and 2, and both side edges 1 and 2. Are formed in a rectangular shape having a lower edge 4 connecting the lower ends of the two edges. Here, the side disposed on the right side in FIG. 1 is referred to as a first side 1, and the side disposed on the left side is referred to as a second side 2. In the window glass according to the present embodiment, the first side 1 is longer than the second side 2, and the second side 2 is disposed on the front side of the automobile. The upper side 3 is inclined downward from the first side 1 toward the second side 2.

  This window glass can be variously configured, for example, it can be composed of laminated glass having a plurality of glass plates, or can be composed of a single glass plate. In the case of using laminated glass, for example, it can be configured as shown in FIG. FIG. 2 is a cross-sectional view of the laminated glass.

  As shown in the figure, the laminated glass includes an outer glass plate 11 and an inner glass plate 12, and a resin intermediate film 13 is disposed between the glass plates 11 and 12. As the outer glass plate 11 and the inner glass plate 12, known glass plates can be used, and they can be formed of heat ray absorbing glass, general clear glass, or green glass. However, these glass plates need to realize visible light transmittance in accordance with the safety standards of the country where the automobile is used. On the other hand, the intermediate film 13 may be formed of a single layer or a plurality of layers. In the case of forming with a plurality of layers, for example, a structure in which a resin layer having low rigidity is sandwiched between resin layers having high rigidity can be employed.

  Moreover, the glass plate used here may be flat or curved. However, when it is curved, the inner surface of the vehicle is formed in a concave shape.

<2. Application area>
As shown in FIG. 1, the inner surface of the window glass is divided into a first region 101 along the upper side 3 and a second region 102 that is adjacent to the first region 101 and positioned below the first region 101. Yes. The width of the first area 101, that is, the distance d from the upper side 3 of the window glass to the boundary (virtual line) L between the two areas 101 and 102 is an area stored in the storage portion of the upper frame of the door described later. For example, it is preferably 2 to 50 mm, and more preferably 5 to 30 mm. In the following, the intersection between the boundary L of the two regions and the first side 1 is referred to as a first intersection 151, and the intersection between the boundary L and the second side 2 is referred to as a second intersection 152.

<3. Functional membrane>
The functional film is a film to which a functional material for imparting a function to the glass plate is added. As the functional film, for example, an ultraviolet absorbing film, an infrared (IR) absorbing film, an antifogging film, a water repellent film, an antifouling film, a low reflection film, an electromagnetic shielding film, or a colored film can be used.

  The functional film can be formed by a flow coating method, as will be described later. The film thickness of the functional film varies depending on the type of film. For example, when the ultraviolet absorbing film is a functional film, it is preferably 0.5 to 10 μm, and preferably 1 to 5 μm. Is more preferable.

<4. Door>
Next, the door to which the window glass is attached will be described with reference to FIG. As shown in FIG. 3, the door according to the present embodiment includes a door main body 51 that is attached to the vehicle body via a hinge so as to be opened and closed, a decorative cover (not shown) that is attached to the inside of the door main body 51, and the door A window frame portion (upper frame) 52 connected to the upper portion of the main body 51 is provided.

  The window frame portion 52 includes a pair of side frames 521 and 522 that extend upward from both sides of the door main body 51, and an upper frame 523 that connects the upper ends of the side frames 521 and 522 and extends substantially horizontally. And the guide groove (refer FIG. 5) in which a window glass fits is formed inside the both sides frame 521,522. Run channels (not shown) extending into the interior space of the door main body 51 are connected to the lower ends of these guide grooves, and these run channels guide the raising and lowering of the window glass together with the guide grooves.

  Further, in the window frame portion 52, a glass run for preventing entry of rain or the like and for soundproofing is attached to a gap between the window glass and the side frames 521, 522 and the upper frame 523.

  Here, an example of the glass run arranged on the upper frame 523 of the window frame portion 52 will be described with reference to FIG. FIG. 4A is a cross-sectional view taken along line AA in FIG. As shown in the figure, the glass run 7 includes a long base 71 fitted into the upper frame 523, and the upper side 3 of the closed window glass is in contact with the lower end surface of the base 71. . The base 71 is connected to a plate-like inner portion 72 extending downward from the vehicle inner end and a plate-shaped outer portion 73 extending downward from the vehicle outer end so as to sandwich the window glass. ing. The base 71, the inner part 72, and the outer part 73 form a storage part in which the upper side 3 of the window glass is stored, and cannot be seen from the outside. The length of the inner part 72 in the vertical direction is longer than that of the outer part 73. Here, the width D1 of the storage portion constituted by the inner portion 72 is larger than the width d of the first region. In addition, let the width | variety D1 in which the window glass by a accommodating part is accommodated be a width | variety by the longer one among the outer side parts 73 and the inner side parts 72. In addition, as shown in FIG. 4B, when a part of the upper frame 523 of the window frame 53 extends below the glass run 7 so that the window glass cannot be seen from the outside, This portion of 523 corresponds to the storage portion. In this case, the width D1 extends to the lower end of the upper frame 523.

  Further, an inner abutting portion 721 extending upward toward the window glass side is connected to the lower end portion of the inner portion 72, and similarly, the lower end portion of the outer portion 73 is also directed upward toward the window glass. An extending outer abutting portion 731 is connected. The vicinity of the upper ends of the inner contact portion 721 and the outer contact portion 731 are in contact with the vehicle inner surface and the vehicle outer surface of the window glass, thereby preventing entry of rain or the like. In addition, each surface is rubbed by the inner contact portion 721 and the outer contact portion 731 as the window glass moves up and down. The portion where the inner contact portion 721 and the outer contact portion 731 are in contact with the window glass is located inside the storage portion, and when the window glass is raised and closed, the upper side 3 enters the storage portion. After that, it comes into contact with the inner contact portion 721 and the outer contact portion 731. Here, the width D2 of the window glass rubbed by the inner contact portion 721 is smaller than the width d of the first region. The inner contact portion 721 and the outer contact portion 731 correspond to the contact portion of the present invention. The width D2 of the window glass to be rubbed is the width of the longer one of the outer contact portion 731 and the inner contact portion 721.

  In the glass run 7, the base 71, the inner part 72, the outer part 73, the inner contact part 721, and the outer contact part 731 described above can be integrally formed of an elastic material such as rubber.

  Next, glass runs arranged in the guide grooves of the side frames 521 and 522 will be described with reference to FIG. 5 is a cross-sectional view taken along line BB in FIG. The side frame 521 on the first side 1 side will be described below, but the side frame 522 on the second side 2 side has the same configuration. As shown in FIG. 3, the glass run 9 includes a long base 91 fitted into the guide groove 531, and the first side 1 of the window glass comes into contact with the base 91. The base 91 has a plate-like inner portion 92 extending almost in parallel with the window glass from the inner end of the vehicle so as to sandwich the window glass, and a plate-like extension extending almost in parallel with the window glass from the outer end of the vehicle. The outer part 93 is connected. The base 91, the inner portion 92, and the outer portion 93 form a recess that accommodates the first side 1 of the window glass, and cannot be seen from the outside. Further, the horizontal length E (depth of the concave portion) of the inner portion 92 and the outer portion 93 is substantially the same.

  Further, an inner abutting portion 921 extending toward the window glass side is connected to the distal end portion of the inner portion 92, and an outer abutting extending toward the window glass is similarly applied to the lower end portion of the outer portion 93. The parts 931 are connected. The vicinity of the tips of the inner contact portion 921 and the outer contact portion 931 is in contact with the vehicle inner surface and the vehicle outer surface of the window glass, thereby preventing rain and the like from entering.

  In the glass run 9, the base 91, the inner part 92, the outer part 93, the inner contact part 921, and the outer contact part 931 described above can be integrally formed of an elastic material such as rubber.

<5. Example of film formation method>
Hereinafter, a film forming method using a flow coating method will be described as an example of a functional film forming method. First, a coating apparatus for coating a functional film coating liquid (hereinafter referred to as a functional liquid) will be described with reference to FIGS. 6 and 7. FIG. 6 is a side view schematically showing the coating apparatus, and FIG. 7 is a functional liquid coating path.

  As shown in FIG. 6A, the coating device 6 includes an injection unit 61 that injects a functional liquid, a robot arm 62 that moves while supporting the injection unit 61, and a blower unit that blows air to the window glass G ( (Not shown).

  The injection unit 61 includes a nozzle 611 that faces the window glass G and a base 612 that supports the nozzle 611. The base 612 includes a tube member 64 formed of rubber or the like that supplies a functional liquid. It is connected. The tube member 64 supplies the functional liquid delivered from a pump (not shown) that delivers the functional liquid to the injection unit 61. The nozzle 611 and the tube member 64 communicate with each other through the base 612, and the functional liquid supplied by the tube member 64 is ejected from the nozzle 611.

  The robot arm 62 supports the injection unit 61 and can be moved three-dimensionally in the vertical and horizontal directions. Further, the blower unit is a unit that is configured by, for example, one or a plurality of fans and blows air to a portion where the functional liquid is injected.

  Next, a method for applying the functional liquid by the application device 6 will be described. First, the window glass G to be applied with the functional liquid is placed, for example, in a standing state, and the vehicle inner surface on which the functional liquid is applied is arranged facing the nozzle 611. At this time, the surface of the window glass G outside the vehicle is inclined by an angle D from the vertical direction. Then, the functional liquid ejected from the nozzle 611 is applied so as to follow a locus as shown in FIG. In addition, when the window glass G is curving, as shown in FIG.6 (b), the tangent F in the center point X of the length T of the up-down direction of the window glass G, and the line K extended in a perpendicular direction Is the angle N described above. The angle N is preferably -30 to 15 degrees. Further, the present inventor makes the flow of the functional liquid better when the angle N is smaller than 0 degrees, and therefore makes the boundary line between the first area 101 and the second area 102 coated with the functional liquid linear. Therefore, it was found that the film can be formed with good appearance. From this viewpoint, when the window glass is curved, the angle D shown in FIG. 6B is more preferably -15 to 0 degrees.

  And the application | coating path | route of a functional liquid is as showing in FIG. First, the robot arm 62 is driven, and the nozzle 611 of the ejection unit 61 is moved to a position where the functional liquid hits the application start point Ra near the lower end of the first side 1 when the functional liquid is ejected. When the functional liquid is ejected from the nozzle 611 to the application start point Ra, the nozzle 611 is moved upward. As a result, the functional liquid is applied along the first side 1. When the application position reaches the first path change point Rb near the upper end of the second region 102, the nozzle 611 is moved along the upper edge of the second region 102, that is, along the boundary L between the first region and the second region. Move. Here, the application route of the functional film liquid from the application start point Ra to the first route change point Rb is referred to as a first route. Then, the functional liquid ejected along the boundary L flows down, and thereby the functional liquid is applied to the second region 102. Therefore, it is possible to make the functional liquid go around the portion where the functional liquid is not directly injected, and the amount of the functional liquid used for applying the functional liquid to the window glass G can be reduced.

  When the nozzle 611 reaches the second path change point Rc in the vicinity of the second side 2, the nozzle 611 is moved downward and the functional liquid is applied along the second side 2. Thus, when the application position of the functional liquid reaches the application end point Rd near the lower end of the second side 2, the injection of the functional liquid from the nozzle 611 is stopped. Here, the functional liquid application path from the first path change point Rb to the second path change point Rc is referred to as a second path, and the functional liquid application path from the second path change point Rc to the application end point Rd is the first path. This is referred to as 3 routes. In the following, regarding the outer edge of the functional film formed, the portion along the first side 1 is the first side, the portion along the second side 2 is the second side, and along the boundary L. A portion is referred to as a central portion, a connecting portion between the first side portion and the central portion is referred to as a first corner portion C1, and a connecting portion between the second side portion and the central portion is referred to as a second corner portion C2. When applying such a functional liquid, air is blown onto the glass surface by the blower unit, thereby drying the functional film formed on the glass surface. In this way, a functional film is formed in the second region 102 on the inner surface of the window glass. Note that the application start point Ra, the first path change point Rb, the second path change point Rc, and the application end point Rd in FIG. 7 do not represent exact positions, but represent approximate positions for convenience of explanation. Yes.

  By the way, when the application path of the functional liquid shifts from the first path to the second path, the functional liquid is applied by two kinds of methods as described below. This point will be described with reference to FIGS. In these drawings, a functional liquid application path (a) and a functional liquid application area (b) are shown, respectively. First, as shown in FIG. 8, in the first method, the first route change point Rb, which is the end point of the first route, exceeds the boundary L between the first region 101 and the second region 102, and the first region 101 Located on the side. And a 2nd path | route goes diagonally downward from the 1st path | route change point Rb, turns into a path | route along the boundary L after entering the 2nd area | region 102 exceeding the boundary L. FIG. Here, when shifting from the first path to the second path, the discharge pressure of the functional liquid from the nozzle 611 is constant or passes the first path change point Rb while increasing the discharge pressure. At this time, the outer edge of the applied functional liquid protrudes from the boundary L, whereby the first corner portion C1 is formed in an arc shape. That is, the outer edge of the protruding portion is separated from the boundary L. Note that if the outer edge of the applied functional liquid protrudes from the boundary L, the first path change point Rb does not necessarily need to be disposed in the first region 101 beyond the boundary L. Two regions 102 may exist.

  And when moving to a 3rd path | route from a 2nd path | route, a functional liquid is apply | coated so that it may protrude beyond the boundary L over the 1st area | region side. That is, since the second path change point Rc is on the first region 101 side beyond the boundary, the functional liquid is applied beyond the boundary L when approaching the second side 2 in the second path. In the third path, the functional liquid is applied downward from the second path change point Rc along the second side 2 and applied to the application end point Rd. The discharge pressure of the functional liquid is also controlled in the same manner as described above. In addition, if the outer edge of the applied functional liquid protrudes from the boundary L, the second path change point Rc does not necessarily need to be arranged in the first region 101 beyond the boundary L, or on the boundary L or the first Two regions 102 may exist.

  As described above, the applied functional liquid protrudes beyond the boundary into the first region 101, but the length H from the side edges 1 and 2 of the protruding portion is the side of the window frame portion described above. It is preferable to make it shorter than the depth E of the recesses of the frames 521 and 522. As a result, the protruding portion having the length H can be hidden behind the concave portion and cannot be seen from the outside. However, it does not have to be completely disposed in the recess, and it is sufficient that at least a part is hidden.

  Next, the second method will be described with reference to FIG. In the second method, as shown in FIG. 9, the first route change point Rb is located in the second region 102 without exceeding the boundary L. That is, the point at which the outer edge of the applied functional liquid is in contact with the boundary L is the first path change point Rb, and the outer edge of the applied functional liquid moves along the second path from there along the boundary L. To do. Thus, the first corner portion C1 corresponding to the first path change point Rb is formed in an arc shape, and a non-application area where the functional liquid is not applied is formed in the vicinity of the first intersection 151 of the second area 102. .

  The length M from the side edges 1 and 2 of the non-application area is preferably shorter than the depth E of the recesses of the side frames 521 and 522 of the window frame described above. Thereby, a non-application area | region can be hidden in a recessed part and can be made invisible from the outside. However, it does not have to be completely disposed in the recess, and it is sufficient that at least a part is hidden.

  8B and at least a part of the non-application area in FIG. 9B are preferably formed within the width D1 of the housing portion described above. Further, it is more preferable that all of the non-application areas are accommodated in the width D1 of the accommodating part of the upper frame 523 of the window frame part and the recessed parts of the side frames 521 and 522 so that they cannot be seen from the outside.

  Here, it is preferable that the curvature radius of corner part C1, C2 formed in circular arc shape is 5-30 mm. This is because if the radius of curvature is less than 5 mm, the amount of liquid decreases, and if the nozzle is moved quickly, there is a risk of liquid cracking. Moreover, if the nozzle is moved slowly, it is possible to prevent liquid cracking, but it takes time to apply and the cost increases. As the radius of curvature increases, the amount of liquid increases and the application time can be shortened, resulting in cycle up and cost reduction. There is a risk that it will spread easily and jump from the side to the surface outside the car. If it protrudes to the outer surface of the vehicle, the appearance will be poor, and when another functional film is formed on the outer surface of the vehicle, the protruding film may adversely affect the other functional film. Although there is a measure to mask the surface outside the vehicle, a masking process is added and the cost is increased.

  The curvature radius can be calculated as follows. As shown in FIG. 10A, first, an intersection N between the corner portion and the boundary is found. Next, a straight line K passing through the intersection N and parallel to the first side 1 is defined. Subsequently, a straight line J that passes through a position 15 mm away from the straight line K toward the first side and is parallel to the straight line K is defined. And the intersection P of the straight line J and the corner part C1 is prescribed | regulated. At this time, a point X equidistant from the intersections N and P on the straight line K is set as the center of the radius of curvature. That is, the radius of curvature is the distance NX (or PX).

  Further, as shown in FIG. 10B, when the position 15 mm away from the straight line K toward the first side side exceeds the first side side 1, the first side 1 and the corner portion C1 Is defined as an intersection point P.

  Furthermore, as shown in FIG. 10C, when the first side portion of the functional film is not applied accurately along the first side 1 and is applied so as to be slightly separated. The intersection P between the straight line J and the corner portion C1 may be greatly separated downward from the boundary L. In this case, the radius of curvature is calculated using the intersection point P2 between the corner portion C1 and the position 15 mm below the first intersection point 151 instead of the intersection point P.

  In this way, when the radius of curvature is calculated, the relationship between the amount of functional liquid ejected from the nozzle (application amount per second) and the radius of curvature is, for example, as shown in FIG. Therefore, as the amount of the functional liquid increases, the radius of curvature increases, and the functional liquid may protrude from the outer surface of the vehicle.

  The same applies to the second route change point Rc, and the outer edge of the second corner portion C2 corresponding to this is formed in an arc shape without exceeding the boundary L. As a result, a non-application area where the functional liquid is not applied is formed near the second intersection 152 of the second area 102.

  In this second method, a non-application area where the functional liquid is not applied is formed in the vicinity of the first and second intersections 151 and 152 of the second area 102. The non-application area is formed from the sides 1 and 2 of the non-application area. The length M is shorter than the depth E of the recesses of the side frames 521 and 522 of the window frame described above. That is, the non-application area | region which is length M is hidden in a recessed part, and cannot be seen from the outside.

<6. Features>
As described above, according to the present embodiment, when moving from the first path to the second path, the first path is changed while the discharge pressure of the functional liquid from the nozzle 611 is constant or the discharge pressure is increased. Pass through point Rb. Similarly, when moving from the second path to the third path, the discharge pressure of the functional liquid from the nozzle 611 is constant or passes the second path change point Rc while increasing the discharge pressure. Thereby, the corner portions C1 and C2 of the functional film are formed in an arc shape. Therefore, since the functional liquid is applied so that the corner portions C1 and C2 have an arc shape without reducing the discharge pressure, the functional liquid can be applied without reducing the application amount of the functional liquid. . As a result, the coating time can be shortened and the manufacturing cost can be reduced.

  In addition, in order to apply the functional liquid without reducing the discharge amount, the corners C1 and C2 at the outer edge of the functional liquid may not be applied accurately along the boundary L and may protrude from the boundary L, or A non-application area is formed without reaching the boundary L. However, even if such an imperfect application region is formed, this portion is a small portion on both sides of the window glass and does not affect the function performed by the functional liquid. In addition, since these regions can be concealed in the accommodating portion of the upper frame 523 and the concave portions of the side frames 521 and 522, no problem is caused in appearance.

<7 Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning.

  In the above embodiment, the two corner portions C1 and C2 of the functional liquid are both formed in an arc shape at both the first intersection and the second intersection. However, only one corner portion may be formed in an arc shape. . Further, the functional liquid may be applied at one corner portion as shown in FIG. 8 beyond the boundary L, and at the other corner portion as shown in FIG. it can.

  In addition, the functional film may not be applied to the entire area below the boundary L. For example, a non-application area may be provided in the vicinity of the lower side 4.

  The width d of the second region described above is larger than the width D2 of the contact portion of the upper frame 523, but is not limited to this. That is, it is only necessary to form a region where the functional liquid is not applied along the upper side 3 with a predetermined width from the upper side 3 of the window glass. Even if d is smaller than the width D2 of the contact portion, the area of the portion rubbed in the vicinity of the upper edge of the functional liquid can be reduced. Including this viewpoint, the central portion of the outer edge of the functional film only needs to be along the boundary, and does not necessarily coincide with the boundary. That is, it may protrude from the boundary L upward or downward to some extent.

  In the said embodiment, although the window glass attached to the door by the side of the front seat of a motor vehicle was demonstrated, the window glass attached to the door by the side of a rear seat may be sufficient. For example, the shape of the window glass does not have to be inclined as described above, and may be such that the upper side that is attached to the rear seat side extends substantially horizontally. That is, the shape of the window glass according to the present invention is not limited as long as it can be opened and closed in the upper frame of the door.

DESCRIPTION OF SYMBOLS 1 1st side edge 2 2nd side edge 3 Upper side 101 1st area | region 102 2nd area | region C1 1st corner part C2 2nd corner part

Claims (5)

A window glass having an upper side and a pair of side sides, which can be opened and closed in a door of an automobile, and the upper side is in contact with a contact portion of an upper frame of the door,
A functional film formed on a part of at least one surface,
The outer edge of the functional film includes a central portion extending along the upper side with a predetermined width from the upper side, a side portion extending along the pair of side sides, the central portion, and the side portions. And a corner portion that connects the
At least one of the corner portions is formed in an arc shape ,
An imaginary line extending along the upper side with a predetermined width from the upper side is defined,
The corner portion of the functional film is disposed below the imaginary line,
A window glass in which a non-application region where the functional film is not applied is formed between the virtual line and the corner portion . Radius of curvature of the corner portion is 5mm or more 30mm or less, glazing according to claim 1. A window glass having an upper side and a pair of side sides, which can be opened and closed in a door of an automobile, and the upper side is in contact with a contact portion of an upper frame of the door,
A functional film formed on a part of at least one surface,
The outer edge of the functional film includes a central portion extending along the upper side with a predetermined width from the upper side, side portions extending along the pair of side sides, the central portion, and the side portions. And a corner portion that connects the
At least one of the corner portions is formed in an arc shape,
An imaginary line extending along the upper side with a predetermined width from the upper side is defined,
The corner portion of the functional film is a window glass, at least a part of which is disposed on the upper side beyond the virtual line. A window glass having an upper side and a pair of side sides, which can be opened and closed in a door of an automobile, and the upper side is in contact with a contact portion of an upper frame of the door,
A functional film formed on a part of at least one surface,
The outer edge of the functional film includes a central portion extending along the upper side with a predetermined width from the upper side, side portions extending along the pair of side sides, the central portion, and the side portions. And a corner portion that connects the
At least one of the corner portions is formed in an arc shape,
An imaginary line extending along the upper side with a predetermined width from the upper side is defined,
One corner of the functional film is disposed below the virtual line,
Between the virtual line and the one corner portion, a non-application region where the functional film is not applied is formed,
At least a part of the other corner portion of the functional film is disposed on the upper side beyond the virtual line. Each of the side sides is configured to be slidable in a recess formed on both sides of the upper frame,
The window glass according to any one of claims 1 to 4, wherein both side portions and corner portions of the functional film are accommodated in the recess.