Vehicle window glass with metal terminals

Abstract

Provided is a vehicular windowpane with a metal terminal with which it is possible to suppress the occurrence of cracking in a shielding layer disposed on a main surface of a glass plate or in an electrical conductor disposed on the shielding layer, and to suppress peeling of the surface of the glass plate below the shielding layer, even after several days have elapsed since the electrical conductor, disposed on the shielding layer disposed on the main surface of the glass plate, and the metal terminal have been connected to one another using lead-free solder.　This vehicular windowpane with a metal terminal is provided with a glass plate, a shielding layer disposed on at least one main surface of the glass plate, an electrical conductor disposed on the shielding layer, said metal terminal, electrically connected to the electrical conductor by means of lead-free solder, and a conducting wire fixed to the metal terminal, wherein: the metal terminal is provided with a pedestal connected to a terminal connecting portion by means of lead-free solder; the electrical conductor is provided with said terminal connecting portion, which is connected to the pedestal by means of lead-free solder, and a linking portion which is linked to the terminal portion and which has a width that is less than the width of the terminal connecting portion in a longitudinal direction or a lateral direction; and in a plan view, the terminal connecting portion and the linking portion are linked over 30% or less of the perimeter of the terminal connecting portion, and an edge portion of the terminal connecting portion is positioned not more than 3 mm from a pedestal edge portion constituting the pedestal, in a direction moving away from the pedestal.

Description

[Technical Field]

[0001] The present invention relates to a vehicle window glass with a metal terminal. [Background technology]

[0002] Vehicle window glass may be provided with an electric heating element made of a conductor on the surface of the glass sheet for, for example, anti-fogging or de-icing purposes, and may also be provided with an antenna made of a conductor on the surface of the glass sheet for radio, television, wireless communication, or a sensor.

[0003] A metal terminal is electrically connected to a conductor in a vehicle window glass via solder to supply power to the conductor or receive and transmit signals, etc. Furthermore, the metal terminal is fixed to a conductor that is electrically connected to a power source or signal source located in the vehicle. Conventionally, conductors have been connected to the metal terminal using lead-containing solder. Lead-containing solder has excellent adhesive properties and high plastic deformability, making it easy to relieve residual stress during soldering. Therefore, the conductor on the surface of the glass plate and the metal terminal could be easily bonded using lead-containing solder. However, in recent years, the effects of lead on the human body and the environment have been pointed out, and it is considered preferable to use lead-free solder for vehicle window glass applications.

[0004] For example, Patent Document 1 discloses a vehicle window glass with a metal terminal, which includes a glass substrate, a conductive layer on the glass substrate, and a metal terminal connected to the conductive layer by lead-free solder. Patent Document 2 also discloses that when a terminal connection portion (conductor) on the surface of a glass plate is connected to the metal terminal by lead-free solder, lead-free solder does not use lead, which has a low elastic modulus, and therefore has a higher elastic modulus than leaded solder, and stress generated with temperature changes tends to be large. This causes residual stress in the glass plate due to temperature changes during soldering, etc., which results in cracks being likely to occur on the surface of the glass plate. Patent Document 2 also discloses that, regarding cracks in a glass plate caused by residual stress in the glass plate, the residual stress in the glass plate can be suppressed by preheating the glass plate when soldering a metal terminal to a conductor arranged on the glass plate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-159128 [Patent Document 2] Patent No. 6186725 Summary of the Invention [Problem to be solved by the invention]

[0006] Typically, vehicle window glass with metal terminals has a shielding layer disposed on the main surface of the glass sheet, and a conductor disposed on the shielding layer, which is connected to the metal terminal with lead-free solder. In addition to cracks (initial cracks) caused by residual stress in the glass sheet due to temperature changes in the glass sheet when soldering the metal terminal, cracks can occur in the shielding layer or the conductor several days or more after the metal terminal is soldered, originating from physically weak points in the shielding layer disposed on the main surface of the glass sheet or in the conductor disposed on the shielding layer. Cracks in the shielding layer or the conductor can sometimes cause partial peeling of the glass surface below the shielding layer.

[0007] The present invention has been made in view of the above-mentioned problems, and aims to provide a vehicle window glass with a metal terminal that can suppress the occurrence of cracks in the shielding layer or the conductor even several days after the conductor and the metal terminal, which are arranged on a shielding layer that is arranged on the main surface of the glass sheet, are connected with lead-free solder, and that can suppress peeling of the surface of the glass sheet below the shielding layer due to cracks that occur in the shielding layer or the conductor. [Means for solving the problem]

[0008] A vehicle window glass with a metal terminal according to one aspect of the present invention comprises a glass plate, a shielding layer arranged on at least one main surface of the glass plate, a conductor arranged on the shielding layer, a metal terminal electrically connected to the conductor via lead-free solder, and a lead wire fixed to the metal terminal, wherein the metal terminal comprises a base portion connected to the terminal connection portion by lead-free solder, and the conductor comprises a terminal connection portion connected to the base portion by lead-free solder, and a connecting portion connected to the terminal portion and having a width narrower than the longitudinal or lateral width of the terminal connection portion, and in a planar view, the terminal connection portion and the connecting portion are connected over 30% or less of the entire circumference of the terminal connection portion, and the edge of the terminal connection portion is located at a position not exceeding 3 mm in a direction away from a base edge portion that constitutes the base portion. [Effects of the Invention]

[0009] According to one aspect of the present invention, the vehicle window glass with metal terminal can suppress the occurrence of cracks in the shielding layer disposed on the main surface of the glass plate or in the conductor disposed on the shielding layer, and can also suppress peeling of the surface of the glass plate below the shielding layer, even if several days or more have passed since the conductor disposed on the shielding layer disposed on the main surface of the glass plate and the metal terminal are connected with lead-free solder. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of one embodiment of a metal terminal. [Figure 2] FIG. 2 is a perspective view of a basic embodiment of a vehicle window glass with a metal terminal, which includes the metal terminal shown in FIG. [Figure 3] FIG. 3 is a plan view of an electric conductor disposed on a glass plate according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a plan view showing a state in which the metal terminal and the conductor of the first embodiment are connected. [Figure 5] FIG. 5 is an enlarged view of the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] 7A to 7F are plan views showing several modified examples of the first embodiment. [Figure 8] 8G to 8I are plan views showing some other modifications of the first embodiment. [Figure 9] FIG. 9 is an enlarged view of the second embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view taken along the line XX in FIG. [Figure 11] 11A to 11F are plan views showing several modified examples of the second embodiment. [Figure 12] 12G to 12I are plan views showing some other modifications of the second embodiment. [Figure 13] FIG. 13 is an enlarged view of the third embodiment. [Figure 14] FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. [Figure 15] 15A to 15F are plan views showing some modified examples of the third embodiment. [Figure 16] 16G to 16I are plan views showing some other modifications of the third embodiment. [Figure 17] 17A and 17B are plan views showing some modified examples of the fourth embodiment. [Figure 18] FIG. 18 is a perspective view showing another example of a vehicle window glass with a metal terminal. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, several embodiments of a vehicle window glass with a metal terminal according to the present invention will be described with reference to the accompanying drawings. However, the components described in the following embodiments are merely examples, and the technical scope of the present invention is not limited to these.

[0012] (metal terminal) A metal terminal to be attached to a vehicle window glass with a metal terminal will be described with reference to the accompanying drawings, in which: Figure 1 is a perspective view of one embodiment of the metal terminal;

[0013] As shown in Fig. 1, the metal terminal 10 includes a leg connecting portion 11, a first leg portion 12 connected to the leg connecting portion 11, a first base portion 14 connected to the first leg portion 12, a second leg portion 13 connected to the leg connecting portion 11, and a second base portion 15 connected to the second leg portion 13. The first leg portion 12 and the second leg portion 13 function to separate the leg connecting portion 11 from a conductor. The metal terminal 10 includes a conductor connection portion 16 connected to the leg connecting portion 11. The leg connecting portion 11 connects the first leg portion 12, the second leg portion 13, and the conductor connection portion 16.

[0014] The leg connector 11 has a generally rectangular top surface with two long sides and two short sides. The two long sides are generally parallel to each other, and the two short sides are generally parallel to each other. The first leg 12 and the second leg 13 are connected to the short sides of the leg connector 11, respectively. The widths of the first leg 12 and the second leg 13 are equal to the length of the short sides of the leg connector 11.

[0015] The first base portion 14 protrudes in the width direction of the first leg portion 12. Similarly, the second base portion 15 protrudes in the width direction of the second leg portion 13. The first base portion 14 and the second base portion 15 are longer than the short sides of the leg connecting portion 11.

[0016] The first pedestal portion 14 and the second pedestal portion 15 are portions that are electrically connected via solder to conductors formed on the glass plate. Two recesses 14A are formed in the first pedestal portion 14. By forming the recesses 14A, the surface opposite to the surface on which the recesses 14A are formed protrudes. Similarly, two recesses 15A are formed in the second pedestal portion 15. By forming the recesses 15A, the surface opposite to the surface on which the recesses 15A are formed protrudes. Note that the number of recesses 14A and 15A is not limited to two.

[0017] The conductor connection portion 16 includes an extension portion 16A that connects to the leg connecting portion 11, and a fixed portion 16B that connects to the extension portion 16A. The extension portion 16A is connected to the long side of the leg connecting portion 11 and is flush with the leg connecting portion 11. The extension portion 16A extends in the same direction as the protrusions of the first base portion 14 and the second base portion 15.

[0018] The fixing portion 16B has a function of fixing the conductor wire. In the present embodiment, the fixing portion 16B is configured as a crimping portion. The crimping portion has a pair of opposing wall portions and a wall connecting portion that connects the ends of the pair of wall portions, and has a U-shape when viewed from the front in the direction opposite to the direction of the extending portion 16A. The U-shaped crimping portion opens toward the first pedestal portion 14 and the second pedestal portion 15. However, the U-shaped crimping portion may also open toward the side opposite to the direction in which the first pedestal portion 14 and the second pedestal portion 15 protrude. Furthermore, the fixing portion 16B may be configured as a soldered portion or a welded portion instead of a crimped portion.

[0019] The metal terminal 10 contains at least one of the group consisting of copper, brass, iron, chromium, and alloys containing copper, brass, iron, and chromium. The surface of the metal terminal 10 may be subjected to a surface treatment (such as tin plating) as necessary. The thickness of the metal terminal 10 is preferably 0.4 mm or more and 0.8 mm or less. The metal terminal 10 is obtained by stamping (pressing) and bending (bending) a metal plate.

[0020] Furthermore, the fixing portion 16B and a portion of the conductor fixed to the fixing portion 16B may be covered with a protective member made of an insulator. The insulator is formed of an insulating material, for example, a resin. The resin is preferably a material with excellent flexibility. The type of resin is not particularly limited, but examples thereof include polyvinyl chloride, fluororesin, natural rubber, synthetic rubber, polyethylene terephthalate, polyolefin, and polyimide. Covering the fixing portion 16B and a portion of the conductor fixed to the fixing portion 16B with a protective member made of an insulator is preferable because even if an external force is applied to the metal terminal 10 or the conductor, causing the metal terminal 10 to deform and come into direct contact with a vehicle window glass or a metal vehicle body, the vehicle window glass will not be damaged and a short circuit with the vehicle body will not occur.

[0021] (Vehicle window glass with metal terminals) The vehicle window glass with a metal terminal will be described with reference to the accompanying drawings, in which: Fig. 2 is a perspective view of a basic embodiment of the vehicle window glass with a metal terminal;

[0022] The vehicle window glass 100 with a metal terminal shown in Fig. 2 comprises a glass plate 30, a conductor 40 disposed on at least one main surface of the glass plate 30, and a metal terminal 10 electrically connected to the conductor 40 via solder 50. In Fig. 2, a shielding layer 70 is disposed on the main surface of the glass plate 30, and the conductor 40 is disposed on the shielding layer 70.

[0023] The glass plate 30 may be made of, for example, soda-lime glass, borosilicate glass, alkali-free glass, or quartz glass, without any particular limitations. Among these, soda-lime glass is particularly preferred. The glass plate 30 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. Tempered glass may be either physically tempered glass (e.g., air-cooled tempered glass) or chemically tempered glass. If the glass plate 30 is physically tempered glass, the glass surface may be tempered by rapidly cooling a uniformly heated glass plate from a temperature near its softening point, thereby generating compressive stress on the glass surface due to the temperature difference between the glass surface and the glass interior. If the glass plate 30 is chemically tempered glass, the glass surface may be tempered by generating compressive stress on the glass surface using an ion exchange method or the like. Furthermore, the glass plate 30 is preferably transparent, but may also be colored to the extent that transparency is not impaired. The thickness of the glass plate 30 is not particularly limited, but is preferably 0.5 mm or more and 5.0 mm or less.

[0024] The conductor 40 is, for example, a conductive silver paste (electrical resistivity is 0.5 to 9.0×10 -8 The conductor 40 is formed by printing or applying a material having a resistivity of 1000 Ω·m onto the main surface of the glass plate 30 and then firing the material. The thickness of the conductor 40 is preferably 3 μm or more and 15 μm or less, and more preferably 3 μm or more and 10 μm or less.

[0025] The solder 50 is made of lead-free solder. Lead-free solder is solder that contains almost no lead. The type of lead-free solder is not particularly limited, but is preferably a solder containing Sn (tin) and Ag (silver), such as Sn-Ag solder, Sn-Ag-In solder, Sn-Ag-Al-Zn solder, Sn-Al-In-Ag-Cu-Zn solder, or Sn-Ag-Cu solder. In this case, the Sn (tin) content is preferably 95 mass% or more.

[0026] The metal terminal 10 is disposed on a conductor 40 provided on the glass plate 30 via solder 50. The first pedestal portion 14 and the second pedestal portion 15 of the metal terminal 10 are electrically connected to the conductor 40 via the solder 50. The leg connecting portion 11 is spaced apart from the conductor 40 by the first leg portion 12 and the second leg portion 13.

[0027] In this basic embodiment, the conductor connection portion 16 faces in the direction in which the conductor 60 extends.

[0028] The conductor 60 is fixed to the fixing portion 16B of the conductor connection portion 16 by crimping. The conductor 60 is composed of a core wire and an insulator that covers the core wire. The core wire at one end of the conductor 60 protrudes from the insulator and is crimped by the fixing portion 16B. As a result, the conductor 60 and the conductor 40 are electrically connected via the metal terminal 10 and the solder 50.

[0029] The core wire is made of, for example, a metal. The type of metal is not particularly limited, but examples include gold, silver, nickel, copper, aluminum, tin, cobalt, and alloys containing at least one of these elements. The core wire may be a single linear conductive material, or a bundle of multiple linear conductive materials. The diameter of the core wire is approximately 2 mm to 8 mm, but is not limited to this. The insulator is made of an insulating material, for example, a resin. The resin is preferably a material with excellent flexibility. The type of resin is not particularly limited, but examples include polyethylene terephthalate, polypropylene, polyethylene, and polyimide.

[0030] The metal terminal 10 is preferably disposed on the interior side of the vehicle when the vehicle window glass 100 with a metal terminal is attached to the vehicle.

[0031] The shielding layer 70 is opaque and dark, such as black. The shielding layer 70 has the function of protecting, for example, urethane sealant from deterioration due to ultraviolet rays. The shielding layer 70 is formed, for example, by applying a ceramic paste to the surface of the glass plate 30 and then firing it. The thickness of the shielding layer 70 is preferably 3 μm or more and 15 μm or less. The width of the shielding layer 70 is not particularly limited, but is preferably 20 mm or more and 300 mm or less.

[0032] Next, the relationship between the conductor 40 and the pedestal portion (including the first pedestal portion 14 and the second pedestal portion 15) will be described.

[0033] The inventors of the present application investigated the fact that, after connecting a metal terminal to a conductor formed on a shielding layer formed on a glass plate via lead-free solder, cracks (initial cracks) occur due to residual stress in the glass plate caused by temperature changes in the glass plate when soldering the metal terminal. Furthermore, cracks occur in the shielding layer or conductor starting from physically weak points in the shielding layer or conductor after several days or more have passed, resulting in partial peeling of the glass surface below the shielding layer. As a result, they found that the spread of lead-free solder and the size of conductor 40 and the base are related to the occurrence of cracks in the shielding layer or conductor starting from physically weak points in the shielding layer or conductor after several days or more have passed after connecting the conductor formed on the shielding layer via lead-free solder, leading to the creation of the present invention.

[0034] (First embodiment) A vehicle window glass with a metal terminal according to a first embodiment of the present invention will be described. Fig. 3 is a plan view of a conductor 40 arranged on a glass plate 30. The conductor 40 includes, for each of the first and second base portions of the metal terminal, a busbar portion 41, a terminal connection portion 42, and three linking portions 43 that connect the busbar portion 41 and the terminal connection portion 42. The busbar portion 41, the terminal connection portion 42, and the linking portions 43 are electrically connected.

[0035] Busbar portions 41 of conductor 40 have a width greater than at least a portion of connecting portion 43. By increasing the width of busbar portions 41, electrical resistance can be reduced and a temperature rise during current flow can be suppressed.

[0036] 3, the terminal connection portion 42 is a portion that is electrically connected to the first seat portion 14 and the second seat portion 15 (not shown) of the metal terminal via lead-free solder. The terminal connection portion 42 and the busbar portion 41 receive and transmit power from the metal terminal 10 (not shown) or signals via the connecting portion 43.

[0037] Fig. 4 is a plan view showing a state in which the metal terminal 10 (shown by a dashed line) is connected to the conductor 40. As shown in Fig. 4, the first pedestal portion 14 and the second pedestal portion 15 are connected by solder 50 (not shown) in the region of the terminal connection portion 42.

[0038] Figure 5 is an enlarged view of Figure 4. In Figure 5, the outline of the metal terminal 10 is indicated by a dotted line. The conductor 40 has a terminal connection portion 42, two linking portions 43 linked to one of the opposing long sides of the terminal connection portion 42, and another linking portion 43 linked to the other long side. The conductor 40 has a total of three linking portions 43. The three linking portions 43 have the same width.

[0039] The shape of the terminal connection portion 42 is determined by its edges in a plan view. In the first embodiment, the shape of each terminal connection portion 42 is determined to be a substantially rectangular shape by the edges of four straight line segments. The edges may be straight lines, curved lines, or a combination of straight lines and curved lines.

[0040] In addition, at the edge of terminal connection portion 42, where there is no connection point with connecting portion 43, the visible edge becomes an element that determines the shape of terminal connection portion 42. At the connection point between terminal connection portion 42 and connecting portion 43, an imaginary line (two-dot chain line) extended along the edge forms the edge, and becomes an element that determines the shape of terminal connection portion 42. The entire circumference of terminal connection portion 42 is determined by the continuous edge including the imaginary line.

[0041] As shown in FIG. 5, the connecting portion 43 has a width narrower than the longitudinal or lateral width of the terminal connection portion 42. The longitudinal direction is a first direction in a plan view, and the lateral direction is a second direction perpendicular to the longitudinal direction. The width is the distance between opposing edges. The connecting portion 43 may have at least one width narrower than the longitudinal or lateral width of the terminal connection portion 42.

[0042] In plan view, the shape of the first pedestal portion 14 is determined by its pedestal edge. In the first embodiment, the shape of the first pedestal portion 14 is determined by an edge formed by four straight lines and an edge formed by two arcs. The pedestal edge may be a straight line, a curved line, or a combination of a straight line and a curved line.

[0043] The edge of the first seat portion 14 is positioned outward relative to the edge of the terminal connection portion 42. Therefore, the size of the terminal connection portion 42 is smaller than the size of the first seat portion 14.

[0044] Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 5. Fig. 6 shows the glass plate 30, the shielding layer 70 disposed on the glass plate 30, the terminal connection portion 42 disposed on the shielding layer 70, and the first base portion 14 of the metal terminal 10 electrically connected to the terminal connection portion 42 via the solder 50 in the vehicle window glass 100 with a metal terminal.

[0045] Because the edge of the first seat portion 14 is positioned outward relative to the edge of the terminal connection portion 42, the solder 50 has a generally trapezoidal cross-sectional shape with its lower base shorter than its upper base. As circled in FIG. 6 , the edge of the terminal connection portion 42 and the edge of the solder 50 can be aligned, thereby preventing cracks from occurring in the shielding layer 70 or the conductor 40 several days or more after the metal terminal 10 is connected to the conductor 40 placed on the shielding layer 70 with lead-free solder. That is, by aligning the edge of the terminal connection portion 42 with the edge of the solder 50, the origin of cracks that tend to occur in the shielding layer 70 or the conductor 40 can be prevented, thereby preventing partial peeling of the surface of the glass plate 30 below the shielding layer 70.

[0046] 5, at the portion where the terminal connection portion 42 and the linking portion 43 are connected, the solder 50 may extend beyond the edge of the terminal connection portion 42 along the linking portion 43, making it difficult to align the edge of the terminal connection portion 42 with the edge of the solder 50. Therefore, in the first embodiment, the terminal connection portion 42 and the linking portion 43 are connected over 30% or less of the entire circumference of the terminal connection portion 42 in a plan view. By connecting the terminal connection portion 42 and the linking portion 43 over 30% or less of the entire circumference of the terminal connection portion 42, the area where the edge of the terminal connection portion 42 and the edge of the solder 50 are aligned can be increased. Furthermore, by connecting the terminal connection portion 42 and the linking portion 43 over 30% or less of the entire circumference of the terminal connection portion 42, the bonding strength between the metal terminal 10 and the conductor 40 can be ensured.

[0047] If the entire circumference of terminal connection portion 42 (including the visible edge and the two-dot chain line) is L1 and the length of the connecting portion between terminal connection portion 42 and connecting portion 43 (the length of the two-dot chain line only) is L2, then by calculating (L2 / L1) x 100, it can be determined whether the length is less than 30% of the entire circumference of terminal connection portion 42.

[0048] 7A to 7F and 8G to 8I are plan views showing modified examples of the first embodiment. In each of the modified examples shown in Figs. 7A to 7F and 8G to 8I, the edge of the first pedestal portion 14 is positioned outward relative to the edge of the terminal connection portion 42.

[0049] 7A, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, and three linking portions 43 that are respectively connected to opposing long sides of the terminal connection portion 42. The conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0050] 7B, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing long sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0051] In the modification shown in FIG. 7C, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one long side of terminal connection portion 42.

[0052] In the modification shown in FIG. 7D, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one short side of terminal connection portion 42.

[0053] 7E, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0054] 7F, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have the same width.

[0055] 8G, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two connecting portions 43 connected to opposing long sides of the terminal connection portion 42, and a connecting portion 43 connected to opposing short sides of the terminal connection portion 42. The conductor 40 includes a total of six connecting portions 43. The six connecting portions 43 have the same width.

[0056] 8H, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two linking portions 43 connected to opposing short sides of the terminal connection portion 42, and a linking portion 43 connected to opposing long sides of the terminal connection portion 42. The conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0057] 8I, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two connecting portions 43 connected to one of the opposing long sides of the terminal connection portion 42, and four connecting portions 43 connected to the other of the long sides. The conductor 40 includes a total of six connecting portions 43. The six connecting portions 43 have the same width.

[0058] The areas of the terminal connection portions 42 in the respective modified examples shown in Figures 7A to F and Figures 8G to I are equal, and the total areas of the linking portions 43 in the respective modified examples shown in Figures 7A to F and Figures 8G to I are equal.

[0059] 4 to 8I, the first pedestal portion 14 has been described, but the matters described for the first pedestal portion 14 for each of the modified examples can also be applied to the second pedestal portion 15. Furthermore, the matters described for the first pedestal portion 14 for each of the modified examples can also be applied to metal terminals having one pedestal portion or three or more pedestal portions, unlike the metal terminal 10 having two pedestal portions (the first pedestal portion 14 and the second pedestal portion 15).

[0060] As long as the edge of the first base portion 14 is positioned outward relative to the edge of the terminal connection portion 42, the connection structure between the terminal connection portion 42 and the connecting portion 43 is not limited to the examples shown in Figures 7A to F and Figures 8G to I, and can be modified as appropriate.

[0061] (Second embodiment) Next, a vehicle window glass with a metal terminal according to a second embodiment of the present invention will be described. Similar components to those in the first embodiment are denoted by similar reference numerals, and descriptions of similar components may be omitted. Fig. 9 is an enlarged view of the second embodiment, and Fig. 10 is a cross-sectional view taken along line XX in Fig. 9.

[0062] 9, in the second embodiment, the seat edge of the first seat portion 14 is located directly above the edge of the terminal connection portion 42. In this configuration, the second embodiment differs from the first embodiment.

[0063] The conductor 40 has a terminal connection portion 42, two linking portions 43 connected to one of the opposing long sides of the terminal connection portion 42, and one linking portion 43 connected to the other long side. The conductor 40 has a total of three linking portions 43. The three linking portions 43 have the same width.

[0064] As in the first embodiment, the connecting portion 43 has a width narrower than the longitudinal or lateral width of the terminal connection portion 42. In addition, the busbar portion 41 of the conductor 40 has a width wider than at least a portion of the connecting portion 43.

[0065] It is not necessary that all of the seat edges of the first seat portions 14 are positioned directly above the edges of the terminal connection portions 42; it is sufficient that 90% or more of the seat edges are positioned directly above the edges of the terminal connection portions 42.

[0066] Figure 10 shows a vehicle window glass 100 with a metal terminal, which includes a glass plate 30, a shielding layer 70 arranged on the glass plate 30, a terminal connection portion 42 arranged on the shielding layer 70, and a first base portion 14 of the metal terminal 10 electrically connected to the terminal connection portion 42 via solder 50.

[0067] Because the base edge of the first pedestal portion 14 is located directly above the edge of the terminal connection portion 42, the solder 50 has a rectangular shape in cross section. As a result, as circled in FIG. 10 , the edge of the terminal connection portion 42 and the edge of the solder 50 can be aligned. This prevents cracks from occurring in the shielding layer 70 or the conductor 40 several days or more after the shielding layer 70 formed on the glass plate 30 is connected to the conductor 40 formed on the shielding layer 70 via lead-free solder, and also prevents partial peeling of the surface of the glass plate 30 below the shielding layer 70. Furthermore, because the base edge of the first pedestal portion 14 is located directly above the edge of the terminal connection portion 42, the bonding strength between the metal terminal 10 and the conductor 40 can be ensured.

[0068] 9, in a plan view, the terminal connection portion 42 and the linking portion 43 are connected over 30% or less of the entire circumference of the terminal connection portion 42. In the second embodiment, if the size of the first pedestal portion 14 and the width of the linking portion of the linking portion 43 are the same as in the first embodiment, the entire circumference of the terminal connection portion 42 is longer in the second embodiment. As a result, for example, in a plan view, the terminal connection portion 42 and the linking portion 43 are connected over 20% or less of the entire circumference of the terminal connection portion 42.

[0069] 11A to 11F and 12G to 12I are plan views showing several modified examples of the second embodiment. In each of the modified examples shown in Figs. 11A to 11F and 12G to 12I, the base edge of the first base portion 14 is located directly above the edge of the terminal connection portion 42.

[0070] 11A, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, and three linking portions 43 that are respectively connected to opposing long sides of the terminal connection portion 42. The conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0071] 11B, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing long sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0072] In the modification shown in FIG. 11C, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one long side of terminal connection portion 42.

[0073] As shown in FIG. 11D, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one short side of terminal connection portion 42.

[0074] 11E, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0075] 11F, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have the same width.

[0076] 12G, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two connecting portions 43 connected to opposing long sides of the terminal connection portion 42, and a connecting portion 43 connected to opposing short sides of the terminal connection portion 42. The conductor 40 includes a total of six connecting portions 43. The six connecting portions 43 have the same width.

[0077] 12H, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two linking portions 43 connected to opposing short sides of the terminal connection portion 42, and a linking portion 43 connected to opposing long sides of the terminal connection portion 42. The conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0078] 12I, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two connecting portions 43 connected to one of the opposing long sides of the terminal connection portion 42, and four connecting portions 43 connected to the other long sides. The conductor 40 includes a total of six connecting portions 43. The six connecting portions 43 have the same width.

[0079] The areas of the terminal connection portions 42 in the modified examples shown in Figures 11A to 11F and 12G to 12I are equal to each other. Also, the total areas of the linking portions 43 in the modified examples shown in Figures 11A to 11F and 12G to 12I are equal to each other.

[0080] 9 to 12I, the first pedestal portion 14 has been described, but the description of the first pedestal portion 14 of each modified example can also be applied to the second pedestal portion 15. Furthermore, the description of the first pedestal portion 14 of the modified example can also be applied to a metal terminal having one pedestal portion or three or more pedestal portions, unlike the metal terminal 10 having two pedestal portions (the first pedestal portion 14 and the second pedestal portion 15).

[0081] As long as the base edge of the first base portion 14 is positioned directly above the edge of the terminal connection portion 42, the connection structure between the terminal connection portion 42 and the connecting portion 43 is not limited to that shown in FIGS. 11 and 12 and can be modified as appropriate.

[0082] (Third embodiment) Next, a vehicle window glass with a metal terminal according to a third embodiment will be described. Similar components to those in the first and second embodiments are denoted by similar reference numerals, and descriptions of similar components may be omitted. Fig. 13 is an enlarged view of the third embodiment, and Fig. 14 is a cross-sectional view taken along line XIV-XIV in Fig. 13.

[0083] 13, in the third embodiment, the edge of the terminal connection portion 42 is located outward from the base edge of the first pedestal portion 14 in a plan view, and is located no more than 3 mm away from the base edge that constitutes the first pedestal portion 14 in a direction away from the first pedestal portion 14. This configuration differs from the first and second embodiments. Therefore, the distance between the base edge that constitutes the first pedestal portion 14 and the edge of the terminal connection portion 42 is less than 3 mm.

[0084] The conductor 40 has a terminal connection portion 42, two linking portions 43 linked to one of the opposing long sides of the terminal connection portion 42, and another linking portion 43 linked to the other long side. The conductor 40 has a total of three linking portions 43. The three linking portions 43 have the same width.

[0085] As in the first embodiment, the connecting portion 43 has a width narrower than the longitudinal or lateral width of the terminal connection portion 42. In addition, the busbar portion 41 of the conductor 40 has a width wider than at least a portion of the connecting portion 43.

[0086] FIG. 14, which shows the third embodiment, shows a vehicle window glass 100 with a metal terminal, including a glass plate 30, a shielding layer 70 arranged on the glass plate 30, a terminal connection portion 42 arranged on the shielding layer 70, and a first base portion 14 of a metal terminal 10 electrically connected to the terminal connection portion 42 via solder 50.

[0087] Because solder 50 is located at a position not exceeding 3 mm in the direction away from first pedestal portion 14 relative to the pedestal edge that constitutes first pedestal portion 14, solder 50 has a generally trapezoidal shape in cross section, with its upper base shorter than its lower base. As a result, as circled in Fig. 14, the edge of terminal connection portion 42 and the edge of solder 50 can be aligned, and cracks can be prevented from occurring in shielding layer 70 or conductor 40 several days or more after connecting shielding layer 70 formed on glass plate 30 to conductor 40 formed on shielding layer 70 via lead-free solder, and partial peeling of the surface of glass plate 30 below shielding layer 70 can be prevented. Furthermore, by positioning the edge of the terminal connection portion 42 on the outside of the base edge portion of the first base portion 14 and at a position not more than 3 mm away from the base edge portion that constitutes the first base portion 14 in the direction away from the first base portion 14, the bonding strength between the metal terminal 10 and the conductor 40 can also be ensured.

[0088] 13 , in the third embodiment, the terminal connection portion 42 and the linking portion 43 are connected over 30% or less of the entire circumference of the terminal connection portion 42 in a plan view. If the size of the first pedestal portion 14 and the width of the linking portion of the linking portion 43 are the same as in the first and second embodiments, the entire circumference of the terminal connection portion 42 is longer in the third embodiment. As a result, for example, the terminal connection portion 42 and the linking portion 43 are connected over 10% or less of the entire circumference of the terminal connection portion 42 in a plan view.

[0089] 15A to 15F and 16G to 16I are plan views showing several modified examples of the third embodiment. In each of the modified examples shown in Fig. 15A to 15F and 16G to 16I, the edge of the terminal connection portion 42 is located outward from the base edge of the first pedestal portion 14 and is located at a position no more than 3 mm away from the base edge that constitutes the first pedestal portion 14 in the direction away from the first pedestal portion 14.

[0090] 15A, conductor 40 includes busbar portion 41, terminal connection portion 42, and three linking portions 43 that are respectively connected to opposing long sides of terminal connection portion 42. Conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0091] 15B, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing long sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0092] In the modification shown in FIG. 15C, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one long side of terminal connection portion 42.

[0093] In the modification shown in FIG. 15D, electrical conductor 40 includes busbar portion 41, terminal connection portion 42, and one connection portion 43 connected to one short side of terminal connection portion 42.

[0094] 15E, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have different widths.

[0095] 15F, conductor 40 includes busbar portion 41, terminal connection portion 42, and linking portions 43 that are connected to opposing short sides of terminal connection portion 42. Conductor 40 includes a total of two linking portions 43. The two linking portions 43 have the same width.

[0096] 16G, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two linking portions 43 connected to opposing long sides of the terminal connection portion 42, and a linking portion 43 connected to opposing short sides of the terminal connection portion 42. The conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0097] 16H, conductor 40 includes a busbar portion 41, a terminal connection portion 42, two linking portions 43 linked to opposing short sides of terminal connection portion 42, and a linking portion 43 linked to opposing long sides of terminal connection portion 42. Conductor 40 includes a total of six linking portions 43. The six linking portions 43 have the same width.

[0098] 16I, the conductor 40 includes a busbar portion 41, a terminal connection portion 42, two connecting portions 43 connected to one of the opposing long sides of the terminal connection portion 42, and four connecting portions 43 connected to the other long sides. The conductor 40 includes a total of six connecting portions 43. The six connecting portions 43 have the same width.

[0099] The total area of ​​the terminal connection portions 42 in each of the modified examples shown in Figures 15A to 15F and 16G to 16I is equal. Also, the total area of ​​the linking portions 43 in each of the modified examples shown in Figures 15A to 15F and 16G to 16I is equal.

[0100] 13 to 16I, the first pedestal portion 14 has been described, but the matters described for the first pedestal portion 14 of each modified example can also be applied to the second pedestal portion 15. Furthermore, the matters described for the first pedestal portion 14 of each modified example can also be applied to a metal terminal having one pedestal portion or three or more pedestal portions, unlike the metal terminal 10 having two pedestal portions (the first pedestal portion 14 and the second pedestal portion 15).

[0101] As long as the edge of the terminal connection portion 42 is positioned outward relative to the base edge of the first base portion 14 and is positioned no more than 3 mm away from the base edge that constitutes the first base portion 14 in the direction away from the first base portion 14, the connection structure between the terminal connection portion 42 and the connecting portion 43 is not limited to Figures 15A to F and Figures 16G to I and can be modified as appropriate.

[0102] (Fourth embodiment) Next, a vehicle window glass with a metal terminal according to a fourth embodiment will be described. The same components as those in the first to third embodiments are denoted by the same reference numerals, and the description of the same components may be omitted.

[0103] 17A and 17B are enlarged views of the fourth embodiment. As shown in Fig. 17A and B, in each modification of the fourth embodiment, a part of the edge of the terminal connection portion 42 is located outward from the base edge of the first base portion 14 and is located at a position not exceeding 3 mm in the direction away from the base edge that constitutes the first base portion 14.

[0104] On the other hand, the edge of the first pedestal portion 14 is positioned outward relative to the other part of the edge of the terminal connection portion 42 .

[0105] Therefore, the edge of the terminal connection portion 42 has a portion located outside the first pedestal portion 14 and a portion located inside.

[0106] 17A is rectangular in plan view. A portion (short side) of the edge of the terminal connection portion 42 is located beyond the short side of the first pedestal portion 14. Meanwhile, the other portion (long side) of the edge of the terminal connection portion 42 is located inside the long side of the first pedestal portion 14. The coupling portion 43 couples the portion (short side) of the edge of the terminal connection portion 42 to the busbar portion 41.

[0107] 17B is elliptical in plan view. A portion of the edge of the terminal connection portion 42 (the long axis side) is located beyond the short side of the first pedestal portion 14. Meanwhile, the other portion of the edge of the terminal connection portion 42 (the short axis side) is located inside the long side of the first pedestal portion 14. The connecting portion 43 is connected to a portion of the edge of the terminal connection portion 42 (the long axis side).

[0108] 17A and 17B , the edge of terminal connection portion 42 and the edge of solder 50 (not shown) can be aligned, and cracks can be prevented from occurring in shielding layer 70 or conductor 40 several days or more after connection via lead-free solder to shielding layer 70 formed on glass plate 30 and conductor 40 formed on shielding layer 70, and partial peeling of the surface of glass plate 30 below shielding layer 70 can be prevented. Furthermore, a portion of the edge of terminal connection portion 42 is located outward from the base edge of first pedestal portion 14 and is located no more than 3 mm away from the base edge constituting first pedestal portion 14 in the direction away from first pedestal portion 14, thereby ensuring the bonding strength between metal terminal 10 and conductor 40.

[0109] 17A and 17B, the first pedestal portion 14 has been described, but the description of the first pedestal portion 14 can also be applied to the second pedestal portion 15. Furthermore, the description of the first pedestal portion 14 can also be applied to a metal terminal having one pedestal portion or three or more pedestal portions, unlike the metal terminal 10 having two pedestal portions (the first pedestal portion 14 and the second pedestal portion 15).

[0110] As long as a portion of the edge of the terminal connection portion 42 is positioned outside the base edge portion of the first base portion 14 and is located no more than 3 mm away from the base edge portion that constitutes the first base portion 14 in the direction away from the first base portion 14, the connection structure between the terminal connection portion 42 and the connecting portion 43 is not limited to the modified example shown in Figures 17A and B and can be modified as appropriate.

[0111] A vehicle window glass with a metal terminal according to yet another embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 18 , the vehicle window glass with a metal terminal 200 is composed of a laminated glass 35 having an interlayer 34 bonding a first glass sheet 32 ​​and a second glass sheet 33 together. The first glass sheet 32 ​​constitutes the glass sheet in each of the first to fourth embodiments, and the second glass sheet 33 constitutes an additional glass sheet. The vehicle window glass with a metal terminal 200 is used as a vehicle windshield, for example. The first to fourth embodiments can be applied to the vehicle window glass with a metal terminal 200, just like the vehicle window glass with a metal terminal 100. When the vehicle window glass with a metal terminal 200 is assembled to a vehicle body, the first glass sheet 32 ​​is disposed on the exterior side of the vehicle, and the second glass sheet 33 is disposed on the interior side of the vehicle. A shielding layer 70 is formed on the interior surface of the first glass sheet 32, and a conductor 40 is formed on the shielding layer 70. The second glass plate 33 may constitute the glass plate in each of the first to fourth embodiments, and the first glass plate 32 may constitute an additional glass plate. When the second glass plate 33 constitutes the glass plate in each of the first to fourth embodiments and the vehicle window glass with a metal terminal 200 is assembled to a vehicle body, the shielding layer 70 is formed on the interior surface of the second glass plate 33, and the conductor 40 is formed on the shielding layer 70.

[0112] The first glass plate 32 and the second glass plate 33 can be the same as the glass plate 30 in the first to fourth embodiments. Therefore, the first glass plate 32 and the second glass plate 33 may be either untempered glass or tempered glass. The thicknesses of the first glass plate 32 and the second glass plate 33 may be the same or different.

[0113] For example, the thickness of the first glass sheet 32 ​​arranged on the vehicle exterior side is preferably 1.1 mm or more and 3.0 mm or less. If the thickness of the first glass sheet 32 ​​arranged on the vehicle exterior side is 1.1 mm or more, sufficient strength is provided for resistance to stone chips, etc., and if it is 3.0 mm or less, the mass of the laminated glass 35 is not too large, which is preferable in terms of vehicle fuel efficiency. The thickness of the first glass sheet 32 ​​arranged on the vehicle exterior side is more preferably 1.5 mm or more and 2.8 mm or less, and even more preferably 1.8 mm or more and 2.6 mm or less. The thickness of the second glass sheet 33 arranged on the vehicle interior side is preferably 0.5 mm or more and 2.3 mm or less. If the thickness of the second glass sheet 33 arranged on the vehicle interior side is 0.5 mm or more, handling is good, and if it is 2.3 mm or less, the mass is not too large, which is preferable.

[0114] In addition, either or both of the first glass plate 32 and the second glass plate 33 may be wedge-shaped so that the thickness increases from the lower edge side (engine hood side) to the upper edge side (roof side) when the laminated glass 35 is assembled to the vehicle body.

[0115] The first glass sheet 32 ​​and the second glass sheet 33 are formed into sheets by, for example, a float process, and then bent at high temperatures by gravity forming or press forming. The laminated glass 35 may have a complex curved shape, i.e., curved in both the longitudinal and lateral directions. Alternatively, the laminated glass 35 may have a single curved shape, i.e., curved only in the longitudinal direction, or curved only in the lateral direction. When the laminated glass 35 is curved, it is preferably curved so as to be convex toward the exterior of the vehicle. When the laminated glass 35 is curved, the radius of curvature is preferably 1,000 mm or more and 100,000 mm or less. The radii of curvature of the first glass sheet 32 ​​and the second glass sheet 33 may be the same or different. When the radii of curvature of the first glass sheet 32 ​​and the second glass sheet 33 are different, the radius of curvature of the first glass sheet 32 ​​is larger than the radius of curvature of the second glass sheet 33.

[0116] The interlayer 34 bonds the first glass plate 32 and the second glass plate 33. The interlayer 34 may be made of polyvinyl butyral (PVB), or, when water resistance is particularly required, ethylene vinyl acetate copolymer (EVA) is preferably used. Furthermore, acrylic photopolymerizable prepolymers, acrylic catalyst-polymerized prepolymers, acrylic ester-vinyl acetate photopolymerizable prepolymers, polyvinyl chloride, etc. may also be used. The interlayer 34 may have either a single-layer structure or a multi-layer structure.

[0117] A dark, opaque shielding layer (not shown), such as a black one, may be formed in a band shape around the entire periphery of the laminated glass 35. This shielding layer may be provided on both the first glass sheet 32 ​​and the second glass sheet 33, or on only one of them. The shielding layer functions to protect the urethane sealant that adheres and holds the laminated glass 35 to the vehicle body from deterioration due to ultraviolet rays.

[0118] In the vehicle window glass 200 with a metal terminal, the second glass sheet 33 has an arc-shaped cutout 36 formed on the periphery thereof so as to penetrate the second glass sheet 33 in the thickness direction. A conductor 40 is formed on the surface of the first glass sheet 32 ​​facing the interior of the vehicle, which is exposed by the cutout 36. If a shielding layer is formed, the conductor 40 is formed on the shielding layer.

[0119] The first pedestal portion 14 and the second pedestal portion 15 of the metal terminal 10 are electrically connected to a terminal connection portion 42 (not shown) of the conductor 40 arranged on the first glass plate 32 via the solder 50. The conducting wire 60 and the conductor 40 are electrically connected via the metal terminal 10 and the solder 50.

[0120] The vehicle window glass 200 with a metal terminal also has the same relationship between the terminal connection portion 42 and the base portion (first base portion 14 and second base portion 15) as the vehicle window glass 100 with a metal terminal in the first to fourth embodiments, so after the shielding layer 70 formed on the glass plate 30 is connected to the conductor 40 formed on the shielding layer 70 via lead-free solder, it is possible to prevent cracks from occurring in the shielding layer 70 or the conductor 40 several days or more, and it is also possible to prevent partial peeling of the surface of the glass plate 30 below the shielding layer 70. Furthermore, the bonding strength between the metal terminal 10 and the conductor 40 can be ensured.

[0121] In the vehicle window glass 100 with a metal terminal according to the embodiment shown in Fig. 18 and the vehicle window glass 200 with a metal terminal according to the first to fourth embodiments, a plurality of busbar portions 41 (not shown) are formed by the conductors 40, for example, along the peripheral edge of the glass sheet 30. A metal terminal 10 is electrically connected to each busbar portion 41, and the busbar portions 41 are further connected to the anode and cathode of a power source. For example, a heating wire is arranged to connect the busbar portions 41.

[0122] The heating wires are, for example, fine tungsten wires. In this case, the multiple wires may be spaced apart from one another, or may be in the form of a mesh with the wires crossed. Alternatively, a transparent conductive film may be formed instead of the heating wires. Examples of the transparent conductive film include a metal film such as an Ag film, a metal oxide film such as an ITO (indium tin oxide) film, or a resin film containing conductive particles. The transparent conductive film may also be a laminate of multiple types of films.

[0123] The present invention has been described above in terms of the preferred embodiment, but the present invention is not limited to the above examples, and various improvements and modifications can be made without departing from the spirit and scope of the present invention. The vehicle window glass with a metal terminal can be applied to, for example, a windshield, a rear window, a side door window, and a quarter window. The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2021-014342, filed on February 1, 2021, are hereby incorporated by reference as part of the disclosure of the specification of the present invention. [Explanation of symbols]

[0124] 10 metal terminal, 11 leg connecting portion, 12 first leg portion, 13 second leg portion, 14 first base portion, 15 second base portion, 16 conductor connection portion, 16A extension portion, 16B fixing portion, 30 glass plate, 32 first glass plate, 33 second glass plate, 34 interlayer film, 35 laminated glass, 36 notch portion, 40 conductor, 41 bus bar portion, 42 terminal connection portion, 43 connecting portion, 50 solder, 60 conductor, 70 shielding layer, 100, 200 vehicle window glass with metal terminal

Claims

1. A vehicle window glass with a metal terminal, comprising: a glass plate; a shielding layer disposed on at least one main surface of the glass plate; a conductor disposed on the shielding layer; a metal terminal electrically connected to the conductor via lead-free solder; and a conducting wire fixed to the metal terminal, the metal terminal has a base portion, the conductor includes a terminal connection portion connected to the base portion by lead-free solder, and a coupling portion coupled to the terminal connection portion and having a width narrower than a width of the terminal connection portion in a longitudinal direction or a lateral direction, In a plan view, the terminal connection portion and the coupling portion are coupled to each other over 30% or less of the entire circumference of the terminal connection portion, The vehicle window glass with a metal terminal, wherein an edge of the terminal connection portion is positioned at a position not exceeding 3 mm in a direction away from a base edge portion that constitutes the base portion.

2. The vehicle window glass with a metal terminal according to claim 1 , wherein the base edge portion of the base portion is located directly above an edge portion of the terminal connection portion.

3. The vehicle window glass with a metal terminal according to claim 1 , wherein the base edge of the base portion is positioned outward from an edge of the terminal connection portion.

4. the conductor includes a busbar portion having a width greater than at least a portion of the coupling portion; The vehicle window glass with a metal terminal according to claim 1 , wherein the busbar portion is connected to the terminal connection portion by the connecting portion.

5. 5. The vehicle window glass with a metal terminal according to claim 1, wherein the metal terminal includes at least one selected from the group consisting of copper, brass, iron, chromium, and an alloy containing copper, brass, iron, and chromium.

6. The vehicle window glass with a metal terminal according to claim 1 , wherein the glass plate is a tempered glass.

7. The vehicle window glass with a metal terminal according to claim 1 , wherein the glass plate is an untempered glass.

8. The vehicle window glass with a metal terminal according to claim 1 , wherein the lead-free solder has a tin content of 95 mass % or more.

9. 9. The vehicle window glass with a metal terminal according to claim 1, wherein the vehicle window glass is a laminated glass having a first glass plate, an interlayer film, and a second glass plate joined together by the interlayer film.

10. 10. The vehicle window glass with a metal terminal according to claim 9, wherein the second glass plate has a cutout portion formed so as to penetrate the second glass plate in a plate thickness direction, and the metal terminal is disposed on a surface of the first glass plate exposed by the cutout portion.

11. 11. The vehicle window glass with a metal terminal according to claim 9 or 10, wherein, when the vehicle window glass is assembled to a vehicle, the first glass sheet is arranged on an exterior side of the vehicle and the second glass sheet is arranged on an interior side of the vehicle.

12. 10. The vehicle window glass with a metal terminal according to claim 9, wherein, when the vehicle window glass is assembled to a vehicle, the first glass sheet is arranged on an interior side of the vehicle and the second glass sheet is arranged on an exterior side of the vehicle.

Images