JP7298279B2 - Vehicle glass plate with electrical connection terminals - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle glass plate with electrical connection terminals.

Automotive glass sheets (vehicle glass sheets) use connection terminals (electrical connection terminals) that provide electrical connection to the conductive material formed on the vehicle glass sheet, such as by supplying power to the conductive material. be done. The conductive material is a material used for anti-fogging heating wires for vehicle glass plates, antennas provided on vehicle glass plates, and the like. Patent Document 1 discloses a circular or elliptical installation portion connected to a conductive layer formed on a glass plate via a solder material, and a connector provided between the installation portion and a connector rising portion that can be deformed by an external force. A connection terminal having a flexible structure (deformable portion) is disclosed. Such connection terminals are devised so as to reduce the load even when external force is applied to the conductive layer, solder material, installation portion, etc., so that the connection terminals do not come off or cracks occur in the connection materials such as solder materials. is applied.

JP 2017-10737 A

However, the connection terminal disclosed in Patent Document 1 requires a complicated structure between the structure installation portion and the connector upright portion in order to suppress cracking of the connection material or the like due to external force. Therefore, there is room for improvement in suppressing cracking of the connecting material due to external force, and eventually cracking of the glass plate, while power is supplied to the conductive material formed on the vehicle glass plate.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle glass plate with electrical connection terminals capable of reducing the stress generated in the glass plate.

In order to solve the above-described problems and achieve the object, a glass plate with electrical connection terminals according to the present invention comprises a glass plate, a conductive film formed on the surface of the glass plate, and the conductive film. A plate-like installation portion, an upright portion that is connected to the installation portion and stands on a side of the installation portion opposite to the conductive film side, and a connector portion that is electrically connected to the installation portion via the upright portion. and a connection material for fixing the installation portion to the conductive film, wherein the installation portion has a first end face facing the conductive film when viewed from above the glass plate, A second end surface of the installation portion opposite to the conductive film side, and a region of the outer peripheral surface of the installation portion excluding the first end surface and the second end surface and excluding a connection portion with the standing portion A peripheral edge and a curved recess formed in the peripheral edge.

ADVANTAGE OF THE INVENTION According to the glass plate with an electrical connection terminal which concerns on this invention, it is effective in reducing the stress generate|occur|produced with respect to a glass plate.

1 is a cross-sectional view of a vehicle glass plate 100 with an electrical connection terminal according to an embodiment of the present invention; FIG. It is a perspective view of an electrical connection terminal. FIG. 2 is a plan view of an installation portion of an electrical connection terminal toward the glass plate 1. FIG. It is a figure which shows the structural example which concerns on the comparative example of the installation part which concerns on embodiment of this invention. FIG. 1 shows a comparison of the stresses applied to the connecting portion of the installation portion to the glass plate 1; FIG. 2 is a second diagram showing a comparison of stresses applied to the connecting portion of the installation portion to the glass plate 1; It is a figure which shows the structural example which concerns on the 1st modification of an installation part. It is a figure which shows the structural example which concerns on the 2nd modification of an installation part. It is a figure which shows the structural example which concerns on the 3rd modification of an installation part.

Hereinafter, a vehicle glass plate 100 with electrical connection terminals according to an embodiment of the present invention will be described in detail with reference to the drawings. In each form, deviations in parallel, right-angled, horizontal, vertical, up-down, left-right, etc. directions are allowed to the extent that the effects of the present invention are not impaired. The X-axis direction, the Y-axis direction, and the Z-axis direction respectively represent directions parallel to the X-axis, directions parallel to the Y-axis, and directions parallel to the Z-axis. The X-axis direction, the Y-axis direction, and the Z-axis direction are orthogonal to each other. The XY plane, YZ plane, and ZX plane are virtual planes parallel to the X-axis direction and Y-axis direction, virtual planes parallel to the Y-axis direction and Z-axis direction, and virtual planes parallel to the Z-axis direction and X-axis direction, respectively. represents In FIG. 1 and subsequent figures, of the X-axis directions, the direction indicated by the arrow is the plus X-axis direction, and the opposite direction is the minus X-axis direction. Of the Y-axis directions, the direction indicated by the arrow is the positive Y-axis direction, and the opposite direction is the negative Y-axis direction. Of the Z-axis directions, the direction indicated by the arrow is the positive Z-axis direction, and the opposite direction is the negative Z-axis direction.

Embodiment.
FIG. 1 is a cross-sectional view of a vehicle glass plate 100 with electrical connection terminals according to an embodiment of the present invention. FIG. 2 is a perspective view of an electrical connection terminal. FIG. 3 is a plan view of the installation portion of the electrical connection terminals toward the glass plate 1. FIG.

The vehicle glass plate 100 with electrical connection terminals includes a glass plate 1 which is a transparent or translucent plate-shaped dielectric, a conductive film 2 formed on the surface of the glass plate 1, an electrical connection terminal 3, an electrical A connection material 4 for fixing the installation portion 31 of the connection terminal 3 to the conductive film 2 is provided. Examples of the glass plate 1 include an automobile windshield, rear glass, and side glass.

Moreover, as the connection material 4, although a solder material is representatively mentioned, it is not limited to this. When a conductive material is used as the connecting material 4, conductive adhesives, conductive rubbers, and the like can be used. may In other words, even if an insulating material is used as the connection material 4, although DC signals are insulated between the conductive film 2 and the installation portion 31, signals for antenna reception, such as LF, MF to VHF, and UHF, are insulated. This is because it is possible to electrically connect to signals in the frequency band by capacitive coupling. Examples of such an insulating connecting material include an insulating paste-like adhesive that hardens without applying heat, an insulating double-sided tape, and the like. Examples of the insulating paste adhesive include a one-component moisture-curing urethane adhesive and a two-component mixed epoxy modified silicone adhesive. When a conductive material is used as the connection material 4 , any material that can stably fix the glass plate 1 and the electrical connection terminals 3 via the conductive film 2 may be used. The connection material 4 is preferably a solder material among these, and among the solder materials, a lead-free solder material is more preferable from the viewpoint of environmental friendliness.

The electrical connection terminal 3 includes a plate-like installation portion 31, an upright portion 32 connected to the installation portion 31 and standing on the opposite side of the installation portion 31 from the conductive film 2 side, and an end of the upright portion 32 in the plus X-axis direction. and a first extending portion 34 connected to the curved portion 33 and extending in parallel with the upright portion 32 in the negative X-axis direction at a certain distance from the upright portion 32 . In addition, the curved portion 33 and the first extending portion 34 are members provided arbitrarily as described later.

The electrical connection terminal 3 includes a second extension portion 35 connected to the first extension portion 34 and extending in the positive Y-axis direction, and an external connector (not shown) for power supply or grounding, which is electrically connected to the installation portion 31 . and a connector portion 36 electrically connected to the . The shape of the connector portion 36 is arbitrary as long as it is electrically connected to the installation portion 31 . In FIG. 1, for example, the connector portion 36 connected to an external connector (not shown) may have a structure in which a plane plate parallel to the YZ plane protrudes, or a structure in which a plane plate parallel to the XY plane protrudes. You may The electrical connection terminal 3 also has a bridge portion 37 with a connector portion 36 .

1, the bridge portion 37 may have any shape as long as it has a structure for electrically connecting the pair of installation portions 31. As shown in FIG. Also, the bridge portion 37 may include a case that covers at least a portion of the electrically connected portion to prevent electrical contact. As the bridge part 37, a structure that can be electrically connected by a low-resistance conductor or a (choke) coil that has a low resistance to a DC signal and a high impedance to a signal of a predetermined frequency is used. and the like. Furthermore, the bridge part 37 may include a circuit having a communication function for transmitting an abnormality detection signal to the outside when an abnormal situation such as glass breakage occurs and an electrically high resistance value is detected. Various functions can be provided.

Materials for the electrical connection terminals 3 include copper, aluminum, chromium, molybdenum, nickel, iron, titanium, palladium, indium, tungsten, gold, platinum, silver, stainless steel (SUS), and alloys containing a plurality of these, such as An alloy of nickel and iron (permalloy) or the like can be used. Silver can generally be used as the material of the conductive film 2, but materials other than silver may also be used. For the conductive film 2, for example, silver paste is screen-printed on the surface of the glass plate 1, dried, and heated to obtain a predetermined silver print pattern.

The installation portion 31 is electrically and physically connected to each of the conductive film 2 and the standing portion 32 . Here, "electrically connected to the conductive film 2" is not limited to the case where a low-frequency signal (including direct current) is connected, but also the case where a high-frequency signal is connected (including the case of capacitive coupling) as described above. including cases where The installation portion 31 has, for example, a substantially quadrangular shape in which the width W1 in the Z-axis direction is wider than the width W2 in the Y-axis direction when viewed from above toward the glass plate 1 . The substantially quadrangular shape is a quadrangular shape with curved corners, that is, a shape that has rounded corners (four corners) but can be regarded as a roughly quadrangular shape. The roughly rectangular shape includes a square shape or a rectangular shape with curved corners.

The installation portion 31 has a first end face 311 facing the conductive film 2 and the glass plate 1 and a second end face 312 opposite to the conductive film 2 side of the installation portion 31 . In addition, the installation portion 31 is formed in a peripheral edge portion 313, which is a region of the outer peripheral surface excluding the first end surface 311 and the second end surface 312 and excluding the connection portion 38 with the standing portion 32, and the peripheral edge portion 313. and a concave portion 314 that is curved in plan view (YZ plane in FIG. 2 and the like) of the installation portion 31 . The curved concave portion 314 has an effect of dispersing stress by not having a sharp portion, for example, a discontinuously bent portion.

In addition, the installation portion 31 includes a first side 11 on the side of the standing portion 32 of the installation portion 31, a second side 12 on the side opposite to the first side 11 of the installation portion 31, and the first side of the installation portion 31. A third side 13 connecting the second side 12 with the third side 11 , and a fourth side 14 opposite to the third side 13 side of the installation portion 31 .

In the installation portion 31 shown in FIG. 3 , two convex portions 315 are formed by providing one concave portion 314 on each of the third side 13 and the fourth side 14 . In other words, a recess 314 is formed between the two protrusions 315 on the third side 13 and a recess 314 is formed between the two protrusions 315 on the fourth side 14 . A peripheral edge portion 313 forming the convex portion 315 and the concave portion 314 is gently curved. Of the two convex portions 315 on each of the third side 13 and the fourth side 14 , the end portion on the side away from the concave portion 314 corresponds to the corner portion 315 a of the approximately rectangular installation portion 31 . The corner 315a is curved, for example.

In addition, the concave portion 314 refers to a portion of the peripheral edge portion 313 that is curved inward. The boundary between 315 and recess 314 may be defined as follows. In other words, when a tangent line is drawn to a continuous curve between the point of the maximum value and the point of minimum value in the Z-axis direction of the third side 13 and the fourth side 14, The boundary between the convex portion 315 and the concave portion 314 may be a position that is tangent to the most inclined angle (absolute value without sign). Also, if the position is a line instead of a point, the midpoint of the line segment may be the boundary between the convex portion 315 and the concave portion 314 .

For example, as shown in FIG. 3, when the installation portion 31 has a substantially square shape with width W1 and width W2, and one recess 314 exists between two protrusions 315, the above-defined recess 314 is preferably in the range of 0.05×W2 to 0.85×W2. Also, even if the recess 314 exists on the second side 12, if there is one recess 314 between two protrusions 315 (not shown), the width of the recess 314 defined above is 0.05. It is preferable that it is in the range of ×W1 to 0.85×W1. When each side has two or more recesses 314, the width of each recess 314 may be shorter than the lower limit of the above numerical range.

Moreover, the installation portion 31 may have a plurality of projecting portions 316 that protrude from the first end surface 311 of the installation portion 31 toward the glass plate 1 in the negative X-axis direction. The plurality of protrusions 316 are arranged, for example, on the virtual line 5 extending from the first vertex 21 of the recess 314 on the third side 13 to the second vertex 22 of the recess 314 on the fourth side 14 . The number of projections 316 is not limited to two, and may be three or more on the first end surface 311 .

The distance D1 from the protrusion 316 provided near the first vertex 21 to the first vertex 21 is substantially equal to the distance D2 from the protrusion 316 provided near the second vertex 22 to the second vertex 22. Good. In addition, when the two protrusions 316 have the same outer edge shape such as a circle in a plan view of the first end surface 311 and have substantially the same maximum height in the X-axis direction, the electrical connection terminal 3 and the conductive film 2 It is preferable because it is stably fixed to By providing a plurality of protrusions 316 as in the illustrated example, the tips of the protrusions 316 are in contact with the conductive film 2 , thereby creating a certain space between the first end surface 311 and the conductive film 2 . This space allows the electrical connection terminals 3 to be arranged on the conductive film 2 in a well-balanced manner in a state in which the connection material 4 such as solder does not protrude from the installation portion 31 to the outside of the installation portion 31 more than necessary. can be firmly fixed.

In the simulation, the installation portion 31 shown in FIG. 3, which corresponds to the present embodiment, was approximately square with W1 of approximately 8 mm, W2 of approximately 5 mm, and four rounded corners, and the width of the recess 314 was set to approximately W2×0.2. . Also, the depth of the concave portion 314 (minus Z-axis direction) was set to about 0.03×W1. The installation portion 31 has a thickness of about 0.5 mm and is made of a tin-plated copper material. Two 5 mm circles with a height of about 0.3 mm were provided so as to give symmetry when the installation portion 31 was viewed from above. Furthermore, as a connection material, a lead-free solder material (Sn—Ag) with an elastic modulus of 46000 [MPa] is used, and as the conductive film 2, on a predetermined pattern printed with silver on a glass plate, two points are applied via a bridge portion 37. The electrical connection terminal 3 having the installation portion 31 was fixed.

FIG. 4 is a diagram showing a configuration example according to a comparative example of the installation portion 31 according to the embodiment of the present invention. The installation portion 31A shown in FIG. 4 is a plate-shaped terminal that is substantially elliptical in plan view, and the installation portion 31A does not have the concave portion 314 shown in the installation portion 31 of FIG. In FIG. 4, the dimension of the installation portion 31A as a comparative example in plan view is equal to the width W2 of the installation portion 31 according to the embodiment of the present invention, and the width W1 is curved outward without the concave portion 314 being formed. However, the area of the installation portion 31 and the area of the installation portion 31A are almost the same. Under such conditions, the following thermal stress simulation was performed.

FIG. 5 is a first diagram showing a comparison of the maximum values of stresses applied to the connecting portion of the installation portion 31 to the glass plate 1. FIG. FIG. 6 is a second diagram showing a comparison of the maximum values of stresses applied to the connecting portion of the installation portion 31 to the glass plate 1. In FIG. The data shown in FIGS. 5 and 6 are the result of verifying the strain generated around the installation portion 31 of the electrical connection terminal 3 by thermal stress simulation. In the thermal stress simulation, geometric elements in which the electrical connection terminals 3 and the glass plate 1 are made into a three-dimensional solid mesh are used so that a computer can analyze the thermal stress. In the thermal stress simulation, the conditions for joining the electrical connection terminals 3 and the solder material used as the connection material 4, the conditions for the connection between the connection material (solder material) 4 and the conductive film 2 (silver), the conductive film 2 and the glass plate 1, and connection conditions are set as appropriate. In the thermal stress simulation, an elastic analysis is performed by setting the ambient temperature including the electrical connection terminals 3 and the glass plate 1 in a range of, for example, −30° C. to +80° C. with one cycle of heating and cooling.

One specific cycle of heating and cooling was simulated by first 30°C, then 80°C, then -30°C, then 80°C, and finally 30°C.

When heating and cooling are repeated, a stress due to a difference in coefficient of linear expansion acts on the vicinity of the connecting portion between the installation portion 31 and the glass plate 1 , and fatigue proportional to the magnitude of the stress is accumulated. cracking may occur. FIG. 5 and FIG. 6 show a comparison of the stresses acting in the vicinity of the joint between the installation portion 31 and the glass plate 1 under the same conditions.

FIG. 5 shows stresses measured when the electrical connection terminal 3 and the glass plate 1 are cooled (-30° C.). The left side of FIG. 5 shows the stress when using the installation portion 31A according to the comparative example. On the right side of FIG. 5, the stress in the case of using the installation portion 31 according to the present embodiment is shown as an index when the stress in the case of using the installation portion 31A according to the comparative example is set to 100.

FIG. 6 shows the stress measured when the electrical connection terminal 3 and the glass plate 1 are heated (80° C.). The left side of FIG. 6 shows the stress when using the installation portion 31A according to the comparative example. On the right side of FIG. 6, the stress in the case of using the installation portion 31 according to the present embodiment is indicated by an index when the stress in the case of using the installation portion 31A according to the comparative example is set to 100. Since FIGS. 5 and 6 show two stresses to be compared relatively, no unit of stress is given, but [MPa] can be mentioned as a unit of stress obtained by actual measurement or simulation.

It can be seen that in the electrical connection terminal 3 according to the present embodiment, the stress is reduced by about 2% as compared with the case where the installation portion 31A according to the comparative example is used. This is because the increase in the number of curved portions in the peripheral edge portion 313 of the installation portion 31 disperses the thermal strain that occurs in the vicinity of the peripheral edge portion 313 of the installation portion 31 due to the thermal cycle, and thus the glass plate 1 of the installation portion 31 is This is thought to be because the local stress concentration at the connection point was relaxed (because the stress was dispersed). It should be noted that "increase in the curved portion" means that the outer peripheral length of the peripheral edge portion 313 is longer than that of the roughly elliptical shape, and this further disperses the stress, making it easier to obtain the above effect. Become.

Note that the installation portion 31 according to the present embodiment may be configured as follows.

FIG. 7 is a diagram showing a configuration example according to a first modified example of the installation portion 31. As shown in FIG. In the installation portion 31 according to the first modified example, for example, one recessed portion 314 is formed in the third side 13, and linear first peripheral edge portions 41 and second peripheral edge portions are formed in portions of the third side 13 excluding the recessed portions 314. 42 are formed. A first peripheral edge 41 is formed between the recess 314 and the first side 11 . A second peripheral edge 42 is formed between the recess 314 and the second side 12 . Note that the first peripheral edge portion 41 and the second peripheral edge portion 42 shown in FIG. 7 may be formed on the fourth side 14 . According to the installation portion 31 according to the first modification, the outer peripheral length of the vicinity of the corner of the installation portion 31 is increased, and the stress applied to the glass plate 1 is dispersed. Therefore, effects similar to those described above can be obtained.

In addition, in FIG. 7, the concave portion 314 has a curved shape that does not include a linear portion, but the shape is not limited to this. FIG. 8 is a diagram showing a configuration example according to a second modified example of the installation portion 31. As shown in FIG. As shown in FIG. 8, for example, the concave portion 314 includes a linear portion substantially parallel to the Y-axis direction in the vicinity including the vertex portion (for example, the first vertex 21) of the concave portion 314, and curves toward the convex portion 315. It may be a shape that

FIG. 9 is a diagram showing a configuration example according to a third modified example of the installation portion 31. As shown in FIG. As shown in FIG. 9, for example, two protrusions 315 and recesses 314 have two peripheral edges that connect them, each including a linear portion substantially parallel to the Z-axis direction, toward the apex of the recesses 314. A curved shape may be used.

Note that the recess 314 may be provided on at least one of the first side 11 and the second side 12 . In this case, a convex portion 315 may be provided on at least one of the first side 11 and the second side 12, or instead of the convex portion 315, the first peripheral edge portion 41 and the second peripheral edge portion 42 shown in FIG. It may be provided on the first side 11 or the second side 12 . For example, the third side 13 in FIG. 7 can be regarded as a shape provided with one recess 314 . In the case of the third side 13 of FIG. 7 , the concave portions are non-parallel from the portions where the tangent lines are parallel to the Y-axis direction in the first peripheral edge portion 41 and the second peripheral edge portion 42 extending parallel to the Y-axis direction. It corresponds to a curved portion that connects the first peripheral edge portion 41 and the second peripheral edge portion 42 with a portion (for example, a portion that is inclined at 1° with respect to the Y-axis direction) as a boundary.

In addition, the installation portion 31 has a substantially quadrangular shape (square shape) in which the width W1 and the width W2 are substantially equal to match the shape of the conductive material (anti-fogging heating wire, antenna conductor, etc.) formed on the glass plate 1 . shape), or an approximately square shape (rectangular shape) in which the width W2 is wider than the width W1.

In addition, one concave portion 314 is formed on each of the third side 13 and the fourth side 14 in the installation portion 31 shown in FIG. A recess 314 may be formed, or two recesses 314 on the third side 13 and/or the fourth side 14 may be formed.

In addition, the installation portion 31 is arranged such that the shape of the peripheral edge portion 313 excluding the connection portion 38 in FIG. may be configured. As a result, the effect of improving the design of the installation portion 31 can be obtained. The connection portion 38 may be connected to the installation portion 31 linearly (substantially rectangular in YZ plan view) in order to simplify the shape of the standing portion 32 . In that case, in order to improve the design, the first side 11 and the second side 12 are straight lines parallel to each other, and the third side 13 and/or the fourth side 14 are provided with recesses 314 so that the first side 11 and the second side 12 are straight lines. The side 11 and the second side 12 may not have the recess 314 .

Further, the electrical connection terminal 3 according to the present embodiment has the curved portion 33 and the first extending portion 34, but the second extending portion 35 is formed on the standing portion 32 by omitting the curved portion 33 and the first extending portion 34. It is good also as a structure connected. By providing the curved portion 33, even if an external force is applied in the Y-axis direction by, for example, inserting or removing an external connector, the curved portion 33 is elastically deformed so that the contact portion of the installation portion 31 with the glass plate 1 does not move. It can reduce the applied stress.

Moreover, the electrical connection terminal 3 according to the present embodiment may be configured so that two installation portions 31 are provided via the bridge portion 37 . With this configuration, the same effect as described above can be obtained in each of the plurality of electrical connection terminals 3 supporting the bridge portion 37 .

In addition, the upright portion 32 is not limited to a shape extending in the plus X-axis direction (vertical direction) from the installation portion 31, for example, a substantially rectangular member in a plan view. A shape extending in an inclined direction, for example, a substantially parallelogram member in a plan view may be used. With this configuration, even when an external force is applied in the X-axis direction by, for example, inserting and removing an external connector, the upright portion 32 is elastically deformed in the X-axis direction, and stress is applied to the contact portion of the installation portion 31 with the glass plate 1. can be reduced.

Also, the standing portion 32 may be provided at any position and width on the first side 11 . For example, as shown in FIG. 3 , the length of the standing portion 32 in the Z-axis direction is shorter than the width of the first side 11 , and the standing portion 32 is located between the first side 11 and the fourth side 14 (or the third side 13 ). If it is provided in the side part, the bridge part 37 of the electrical connection terminal 3 is arranged at a position offset from the position directly above the conductive material (heating wire for anti-fogging, antenna conductor, etc.) formed on the glass plate 1 It is possible to improve the degree of freedom in design.

As described above, the installation portion 31 of the vehicle glass plate 100 with an electrical connection terminal according to the present embodiment has the outer peripheral surface of the installation portion 31 except for the first end surface 311 and the second end surface 312, and has an upright portion. It has a peripheral edge portion 313 , which is a region excluding the connection portion 38 with the portion 32 , and a curved concave portion 314 formed in the peripheral edge portion 313 .

With this configuration, the curved portion (peripheral length) of the peripheral edge portion 313 of the installation portion 31 is increased, and the local stress concentration at the connecting portion of the installation portion 31 to the glass plate 1 is alleviated. As a result, the stress generated on the glass plate 1 can be reduced, and the quality can be improved.

In addition, the installation portion 31 has a substantially rectangular shape, and the peripheral edge portion 313 has a first side 11 on the upright portion 32 side of the installation portion 31 and a second side opposite to the first side 11 side of the installation portion 31 . 12. With this configuration, the same effect as described above can be obtained while increasing the contact area with the conductive material formed on the glass plate 1, compared to the case of manufacturing the elliptical installation portion 31. The resistance value at the contact point can be reduced.

Also, the installation portion 31 may be configured such that the first side 11 and the second side 12 are substantially parallel straight lines. With this configuration, for example, even when the installation portion 31 and the standing portion 32 are individually manufactured and then connected to each other, the standing portion 32 can be easily connected to both the first side 11 and the second side 12, and the electrical connection terminal 3 manufacturing can be facilitated. The same effect can be obtained even when the installation portion 31 is configured such that the first side 11 and the second side 12 are straight lines.

The installation portion 31 may be configured such that the first side 11 is straight, the second side 12 includes a curved portion, and the first side 11 and the second side 12 are non-parallel. With this configuration, for example, even when the installation portion 31 and the standing portion 32 are separately manufactured and then connected to each other, the standing portion 32 can be easily connected to the first side 11, and the processing accuracy of the second side 12 does not need to be improved. Therefore, the same effect as described above can be obtained while suppressing the manufacturing cost of the installation portion 31 .

In addition, a peripheral edge portion 313 of the installation portion 31 has curved convex portions 315 projecting in a direction from the center of the installation portion 31 toward the peripheral edge portion 313 , and the concave portions 314 are provided between the plurality of convex portions 315 . may be configured. With this configuration, it is possible to increase the number of curved portions in the peripheral edge portion 313 while suppressing the formation of a corner at the boundary portion between the concave portion 314 and the convex portion 315 . The stress generated in the glass plate 1 can be further suppressed as compared with the flat shape.

In addition, the peripheral edge portion 313 of the installation portion 31 includes the third side 13 connecting the first side 11 and the second side 12 of the installation portion 31 and the fourth side opposite to the third side 13 side of the installation portion 31 . 14 , and at least one of the third side 13 and the fourth side 14 may be provided with a recess 314 . With this configuration, even if the width in the Z-axis direction is narrow due to dimensional restrictions on the installation portion 31, the recesses 314 are formed in the third side 13, the fourth side 14, etc. in the Y-axis direction perpendicular to the Z-axis direction. The degree of freedom in designing the installation portion 31 is improved while obtaining the same effect as described above.

At least one of the third side 13 and the fourth side 14 of the peripheral edge portion 313 of the installation portion 31 is formed with a curved convex portion 315 protruding from the center of the installation portion 31 toward the peripheral edge portion 313 . may be configured to be provided between the plurality of protrusions 315 . With this configuration, it is possible to increase the number of curved portions in the peripheral edge portion 313 while suppressing the formation of a corner at the boundary portion between the concave portion 314 and the convex portion 315 . The stress generated in the glass plate 1 can be further suppressed as compared with the flat shape.

The configuration shown in the above embodiment shows an example of the content of the present invention, and it is possible to combine it with another known technology, and one configuration can be used without departing from the scope of the present invention. It is also possible to omit or change the part.

Reference Signs List 1: glass plate 2: conductive film 3: electrical connection terminal 4: connection material 5: imaginary line 6: imaginary line 11: first side 12: second side 13: third side 14: fourth side 21: first vertex 22 : Second vertex 31 : Installation portion 31A : Installation portion 32 : Standing portion 33 : Curved portion 34 : First extension portion 35 : Second extension portion 36 : Connector portion 37 : Bridge portion 38 : Connection portion 41 : First peripheral edge Part 42 : Second peripheral edge 100 : Vehicle glass plate 311 with electrical connection terminal : First end face 312 : Second end face 313 : Peripheral edge 314 : Concave part 315 : Protruding part 316 : Protruding part

Claims (6)

a glass plate and
a conductive film formed on the surface of the glass plate;
a plate-shaped installation portion installed on the conductive film; an upright portion connected to the installation portion and standing on the opposite side of the installation portion to the conductive film; an electrical connection terminal having a connector portion to be electrically connected;
a connection material for fixing the installation portion to the conductive film;
with
The installation section is
In a plan view of the glass plate, among the first end surface facing the conductive film, the second end surface of the installation portion opposite to the conductive film side, and the outer peripheral surface of the installation portion, the first A peripheral edge portion, which is a region excluding an end face and the second end face and excluding a connection portion with the standing portion, and a curved recess formed in the peripheral edge portion ,
The installation portion has a plurality of protrusions protruding from the first end surface toward the glass plate,
The peripheral portion includes a first side of the installation section on the standing section side, a second side of the installation section opposite to the first side, and the first side and the second side of the installation section. a fourth side opposite to the third side of the installation portion; and a curved convex portion projecting from the center of the installation portion toward the peripheral portion. ,
Two of the protrusions and one of the recesses are continuously formed on each of the third side and the fourth side,
the plurality of protrusions are arranged on a virtual line from a first vertex of the recess on the third side to a second vertex of the recess on the fourth side;
Glass with an electrical connection terminal, wherein the distance from the protrusion provided near the first vertex to the first vertex is equal to the distance from the protrusion provided near the second vertex to the second vertex board. 2. The glass plate with electrical connection terminals according to claim 1 , wherein said installation portion has a substantially rectangular shape. 3. The glass plate with electrical connection terminals according to claim 2, wherein the first side and the second side are substantially parallel straight lines. 4. The glass plate with electrical connection terminals according to claim 3, wherein said first side and said second side are straight lines. the first side is a straight line,
the second side includes a curved portion;
2. The glass plate with electrical connection terminals according to claim 1 , wherein said first side and said second side are non-parallel. The glass plate with electrical connection terminals according to any one of claims 1 to 5, wherein the recess is provided between a plurality of the projections.

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