JP2002254927A - Window glass for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window glass for vehicle capable of preventing cathodic corrosion caused by the abutting of a heating wire of a de-icer, etc., provided on a peripheral part of the window glass, in particular, a windshield or a rear window glass on a vibration-isolating member located inside the heating wire. SOLUTION: In the window glass for vehicle in which the heating wire 3 is provided on an edge part of a cabin-side surface of the window glass 1 and the vibration-isolating member 7 is provided between the heating wire 3 and an instrument panel 10 or a body flange 9, a part of or the whole of the heating wire 3 is covered by an insulating material 6 or an insulating layer to prevent cathodic corrosion of the heating wire 3 by the vibration-isolating member 7 provided between the instrument panel 10 and the glass plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a window glass of a vehicle,
In particular, a vehicle window glass that prevents electric corrosion due to contact with a vibration-insulating member located inside a heating wire such as a deicer such as snow melting or ice melting provided in the periphery of a front window or a rear window glass. About.

[0002]

2. Description of the Related Art In cold regions, it is often used to provide a conductive wire for heating a wiper for freezing or melting snow on part of the periphery of a front window or a rear window glass of a vehicle. Have been

[0003] In the case of single-pane glass, the heating conductive wire is provided on the indoor side surface of the windowpane. However, when the windowpane is a laminated glass in which two glass panes are bonded with an interlayer film. It is generally provided on either the inner surface of the outdoor glass plate of the two superposed glass plates (the bonded surface) or the indoor surface of the indoor glass (the non-laminated surface).

[0004] Further, the heating conductive wire is disposed at a position that does not obstruct the driver's view, and is generally provided at a standby stop position of the wiper and in the vicinity thereof when the wiper is not used. Usually, in the case of a window glass for a vehicle, it is often provided on the lower side or near the side.

Further, the window glass is fixed to a front window frame or a rear window frame of a vehicle by a weather strip, or by attaching a peripheral portion of a glass plate to a body flange with an adhesive. In recent years, a method in which the outer surface of the glass plate and the outer surface of the body flange are substantially flush with each other after mounting is often used in recent years.

In this case, as shown in FIG. 4, a portion between the body flange and the glass plate closer to the inner surface than the bonding portion between the peripheral portion of the glass plate and the outer peripheral portion of the flange is provided on a portion between the glass plate and the like. In order to prevent wind noise generated by the running of a vehicle, and to provide a foaming vibration damping member for absorbing micro vibration of a glass plate due to wind pressure, vibration from a running road surface, or the like.

[0007]

However, the vibration damping member is a foamed elastic material made of EPDM, plastic resin, or the like. When the conductive heating wire is printed on the mating surface, that is, on the indoor side surface of the indoor glass, when the conductive heating wire arranged near the stop position of the wiper or the like is in contact with the conductive heating wire, moisture such as moisture is removed. When absorbing and holding, the electrical heating of the conductive heating wire in contact with the vibration-proof member gradually progresses, and when electricity is applied in a state where the electrical corrosion has progressed to a certain extent, a spark is generated in the portion, leading to disconnection, There is a problem that the snow melting performance and the ice melting performance are reduced, and in the worst case, the glass plate is broken.

On the other hand, a laminated glass, which is usually bent by a heating bending furnace in a state where two glass plates are stacked, has a ceramic paste such as a conductive heating wire or a black frame on the inner surface (laminated bonding surface) of the outdoor glass plate. Printing, the printing surface is on the mating surface side, so the scratches and peeling occur on the printing surface due to the contact between the two superposed glass plates, and the evaporation of the oil component contained in the ceramic paste It will hinder.

For this reason, a heating and baking treatment is required before being put into a bending furnace, or a glass plate on the indoor side is cut out.
An operation of attaching a power supply terminal to the electrode of the conductive heating wire is required, and the manufacturing process becomes complicated.

[0010]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, that is, a heating wire for freezing a wiper or melting snow is provided around a front window or a rear window glass of a vehicle. When the glass plate provided on a part of the glass plate is attached to the body flange, electric corrosion of the conductive heating wire is prevented from occurring regardless of the position of the vibration isolating member provided between the glass plate and the body flange. It is another object of the present invention to be able to design a heating wire pattern in a free range without worrying about electrical corrosion of the conductive heating wire.

That is, the present invention relates to a window glass for a vehicle in which a heating wire is provided at an edge of the interior surface of the window glass, and a vibration-proof member is provided between the heating wire and an instrument panel or a body flange. Some or all of the heating wire is an insulating material,
Alternatively, there is provided a window glass for a vehicle, which is covered with an insulating layer so as to prevent electric corrosion of a heating wire by a vibration-proof member provided between an instrument panel and a glass plate.

Alternatively, the present invention is the above-mentioned window glass for a vehicle, wherein the heating wire is for snow melting or ice melting.

[0013] Alternatively, the present invention is the above-mentioned vehicle window glass, wherein the insulating material is an insulating tape.

Alternatively, the present invention is the above-mentioned window glass for a vehicle, wherein the insulating layer is a ceramic insulating layer printed with a ceramic paste.

Alternatively, the present invention provides the vehicle window as described above, wherein the window glass is a laminated glass in which a plurality of glass plates are bonded, and a heating wire is provided on the interior surface of the interior glass. It is glass.

[0016] Alternatively, the present invention is the above-mentioned vehicle window glass, wherein the window glass is for a front window, a rear window, or a side window of a vehicle.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a window glass plate 1 is fixedly mounted on a flange 9 for a front window or a rear window of a moving body. The body flange 9 is adhered and fixed with an adhesive 8 or the like. The body flange 9 or a part between the instrument panel 10 and the window glass plate 1 is further attached to the inner surface than the bonded portion of the window glass plate 1 when the vehicle is running. A foaming vibration-proofing member 7 is provided to prevent generated wind noise and to absorb fine vibration of the window glass plate 1 due to wind pressure, vibration from a traveling road surface, or the like.

A conductive heating wire 3 for melting ice or melting snow when the wiper 11 is frozen is provided on the periphery of the indoor surface of the window glass plate 1, particularly on a portion located on the lower side or the side of the window glass plate 1. Is provided.

The conductive heating wire 3 was provided with power supply terminals 4 and 4 at both ends thereof, and was connected to a power source (not shown).

When a ceramic color layer 2 colored, for example, with black is provided on the entire periphery of the indoor surface of the window glass plate 1, the ceramic color of the portion located on the lower side or the side of the window glass plate 1 is provided. It is preferable to provide on the layer 2 a conductive heating wire 3 for melting ice or melting snow when the wiper is frozen.

Since the vibration damping member 7 must be provided in a limited space between the window glass plate 1 and the body flange 9 or the instrument panel 10, the vibration damping member 7 and the conductive heating wire are required. In order to prevent electrical corrosion due to contact with the strip 3, an insulating material 6 is interposed between the two.

The insulating material 6 may be formed by attaching an adhesive insulating tape so as to cover the conductive heating wire 3 of the window glass plate 1. An insulating plate that can insulate between them may be provided.

Further, as shown in FIG. 3, a ceramic insulating layer may be provided as an insulating material 6 on a region at least covering the conductive heating wire 3 for melting ice or melting snow.

As described above, since the insulating material 6 is provided between the conductive heating wire 3 and the vibration isolating member 7, even if the vibration isolating member 7 is provided at the position of the conductive heating wire 3, the moisture Is absorbed and held in the vibration isolating member 7, thereby preventing the conductive heating wire 3 from being electrically corroded.

Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered.

According to the present invention, not limited to the prevention of the electrical corrosion of the conductive heating wire 3, the electrical corrosion is likely to occur due to moisture and the like with the antenna wire, the bus bar, various conductive terminals, the conductive thin film, etc., not shown. It can be applied to the prevention of electrical corrosion of various cases, for example, by attaching an insulating tape to a contact portion with a member or disposing an insulating material or the like. Example 1 As shown in FIGS. 1 and 2, a front window glass 1 of an automobile was mounted on a body flange and fixed with an adhesive. The window glass plate 1 is provided with a black-colored ceramic color layer 2 all around the interior surface of the room.
On the ceramic color layer 2 located on the lower side, a conductive heating wire 3 is provided for the ice melting or snow melting when the wiper 11 is frozen, and an insulating tape is provided so as to cover the conductive heating wire 3 portion. Was stuck.

The conductive heating wire 3 has a U-shape, and power supply terminals 4 and 4 are provided at each end, and the power supply terminals are connected to a power supply (not shown).

Between the instrument panel 10 provided slightly nearer to the center of the glass plate than the bonding portion between the window glass plate 1 and the body flange 9 and substantially at the position where the conductive heating wire 3 is provided. Is provided with an anti-vibration member 7.

The vibration isolating member 7 is an epto sealer (soundproofing foam material) manufactured by Nitto Denko Corporation and has a sponge-like shape having a width of 8 mm, a thickness of 5 mm, and a length of the conductive heating wire 3. Using.

As the insulating tape, a polyester made by Nitto Denko Corporation having a thickness of 50 μm and a width of 20 mm was used.

In this state, a DC voltage of 1 is applied to the conductive heating wire 3.
While supplying 5 V, 5 cc of water was
It was supplied every 0 minutes, and the electrical heating of the conductive heating wire 3 after 48 hours, cracking, resistance change after the test, deterioration of the conductive heating wire 3, peeling of the insulating tape 6 and the like were tested. However, no electric corrosion, cracking, change in resistance, alteration, etc. were observed at all.

Further, when the moisture resistance test and the heat cycle resistance test were performed as the durability performance of the insulating tape 6, there was no change in resistance, deterioration of the heat ray, peeling of the insulating tape, and deterioration.
Satisfactory performance was obtained. Example 2 As shown in FIG. 3, instead of the insulating tape of Example 1,
A ceramic insulating layer is provided as an insulating layer 6 on at least a region covering the conductive heating wire 3 for melting ice or melting snow.

When a test similar to that of Example 1 was performed in this state, no abnormal change was observed. Comparative Example 1 As shown in FIG. 4, in Example 1, no insulating tape was provided.

That is, the front window glass 1 of the automobile is attached to the body flange 9 and fixed by the adhesive 8, and the window glass plate 1 is provided with a black-colored ceramic color layer 2 on the entire periphery of the indoor surface. The windowpane 1
On the ceramic color layer 2 located on the lower side, a conductive heating wire 3 for melting ice or melting snow when the wiper is frozen is provided.

Between the instrument panel 10 provided slightly closer to the center of the glass plate than the bonding portion between the window glass plate 1 and the body flange 9 and substantially at the position where the conductive heating wire 3 is provided. Is provided with an anti-vibration member 7.

In this state, a DC voltage of 1 is applied to the conductive heating wire 3.
While supplying 5 V, 5 cc of water was
When supplied every 0 minutes, after the lapse of 8 hours, electric corrosion of the conductive heating wire 3 occurred, sparks were observed in the electrically corroded portion, and cracks occurred after the lapse of 8.5 hours.

[0037]

According to the present invention, a glass plate provided with a heating wire for freezing a wiper or for melting snow at a part of the periphery of a front window or a rear window glass of a vehicle is attached to a body flange. Sometimes, irrespective of the location of the vibration isolating member provided between the peripheral portion of the glass plate and the body flange or the instrument panel, to prevent electrical corrosion of the conductive heating wire,
It is possible to prevent sparking due to electric corrosion and deterioration in snow melting performance and ice melting performance due to disconnection, and to prevent cracking of the glass plate.

In addition, regardless of the position of the conductive heating wire, the pattern of the conductive heating wire can be changed freely without regard to the electric corrosion of the conductive heating wire caused by contact with the vibration-proof member. Can be designed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a vehicle window glass when an insulating tape according to a first embodiment of the present invention is attached.

FIG. 2 is a front view of the vehicle window glass when the insulating tape according to the first embodiment of the present invention is attached.

FIG. 3 is a longitudinal sectional view of a vehicle window glass according to a second embodiment.

FIG. 4 is a longitudinal sectional view of a vehicle window glass when an insulating tape of a conventional example is not attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window glass 2 Ceramic color layer 3 Conductive heating wire 4 Power supply terminal 6 Insulating material 7 Vibration-proof member 8 Adhesive 9 Body flange 10 Instrument panel 11 Wiper

Claims (6)

[Claims] 1. A vehicular window glass having a heating wire provided at an edge of the interior surface of the window glass and a vibration-proof member provided between the heating wire and an instrument panel or a body flange. A window for a vehicle, wherein a part or the whole of the window is covered with an insulating material or an insulating layer to prevent electric corrosion of the heating wire by a vibration-proof member provided between the instrument panel and the glass plate. Glass. 2. The vehicle window glass according to claim 1, wherein the heating wire is for melting snow or melting ice. 3. The vehicle window glass according to claim 1, wherein the insulating material is an insulating tape. 4. The method according to claim 1, wherein the insulating layer is a ceramic insulating layer printed with a ceramic paste.
4. The window glass for a vehicle according to any one of claims 3 to 3. 5. The window glass according to claim 1, wherein the window glass is a laminated glass in which a plurality of glass plates are bonded, and a heating line is provided on the interior surface of the interior glass. Window glass for vehicles. 6. The vehicle according to claim 1, wherein the window glass is for a front window, a rear window, or a side window of a vehicle.
6. The vehicle window glass according to any one of claims 1 to 5.