JPH05238257A - Installation structure of laminated glass - Google Patents

Abstract

PURPOSE:To easily separate a joint glass which is installed as window glass on a car body, from the car body. CONSTITUTION:A Nichrome wire 4 whose both edge parts only are exposed is arranged in the vicinity of the periphery of an intermediate film 3, and the intermediate film 3 is nipped by two pieces of glass plates 2 and 2 each of which is applied with the black ceramic coating 5 on one surface of the periphery, and a joint glass 1 is assembled, and the joint glass 1 is installed on a car body 7 by a adhesive 6 on the outer peripheral part in comparison with the position where the Nichrome wire 4 is arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated glass attachment structure in which an automobile window glass made of laminated glass can be easily removed from a vehicle body.

[0002]

2. Description of the Related Art Conventionally, in automobiles, a method of directly attaching a window glass to a vehicle body with an elastic adhesive has been adopted. In addition, the linear heating element is embedded inside the elastic adhesive, the window glass is attached to the vehicle body, an electric current is applied to the linear heating element with the window attached to the vehicle body, and the elastic adhesive is heated by the linear heating element. It is known that the elastic adhesive is softened to remove the window glass from the vehicle body.

[0003]

The former of the conventional techniques has an advantage that glass can contribute to the rigidity of the vehicle body, but this glass mounting structure for the vehicle body does not consider removal, and removal is a manual operation. Since the window glass is removed only when the window glass is a laminated glass, there is a problem that the window glass removal work at the time of disassembling is particularly complicated. Also,
In the latter case, it is difficult to deal with complicated glass shapes, and the heating element is likely to bend, stick out, etc., the adhesive force to the vehicle body is insufficient, and the heating element is exposed to the human body when energized during removal. There is a problem of being touchable and dangerous.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to easily separate a laminated glass attached to a vehicle body as a window glass from the vehicle body. It is intended to provide a laminated glass attachment structure that can be used.

[0005]

In order to solve the above-mentioned problems, the present invention assembles a laminated glass by disposing a heating element whose both ends are exposed in the vicinity of the periphery of an intermediate film, and assembles the laminated glass from the heating element. Is also attached to the vehicle body at the outer periphery. Also,
The heating element may be arranged between glass surfaces coated with black ceramic.

[0006]

The glass is heated by passing an electric current through the heating element, the glass is broken along the heating element, and the interlayer film is burned off at the same time, so that the laminated glass as the window glass is cut off from the vehicle body.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a plan view of an automobile window glass made of laminated glass on which a heating element is arranged, FIG. 2 is a sectional view of a laminated glass mounting structure according to the present invention, and FIG. 3 is a laminated glass mounting structure according to the present invention. Is a cross-sectional view in which is applied to a heat ray reflective glass, and FIG. 4 is a plan view of an automobile window glass of another embodiment.

A laminated glass 1 for a window glass for an automobile is constructed by sandwiching an intermediate film 3 between two curved glass sheets 2 and 2. A nichrome wire 4 as a heating element is embedded in the intermediate film 3 in the vicinity of the periphery of the intermediate film 3 with both end portions 4a exposed.

A black ceramic coating 5 is formed on one surface of each glass 2 to cover the nichrome wire 4 embedded in the intermediate film 3 when the laminated glass 1 is formed near the periphery of the two glasses 2 and 2. It has been subjected.

Then, the laminated glass 1 has an adhesive 6 at the outer peripheral side of the position where the nichrome wire 4 is arranged.
It is attached to the vehicle body 7 by.

To embed the nichrome wire 4 in the intermediate film 3,
HPR with a total thickness of two sheets of 0.76 mm or more and 2 mm or less
A nichrome wire 4 having a diameter of 0.1 to 1.8 mm and preferably 0.3 to 0.5 mm is sandwiched between the intermediate films 3 for preforming, and the surface of the intermediate film 3 is embossed. In the conventional laminated glass manufacturing process, preliminary pressure bonding and main pressure bonding are performed.

It is preferable to use two 0.38 mm sheets as the intermediate film 3, but the present invention is not limited to this.
However, if the total thickness of the intermediate film 3 is less than 0.76 mm, the safety at the time of collision is insufficient, and if it is 2 mm or more, the weight increases and the rigidity decreases. The nichrome wire 4 is 0.1 mm
In the following, the power capacity is insufficient, and in the case of 1.8 mm or more, the quality of the laminated glass is adversely affected.

As shown in FIG. 1, the nichrome wire 4 is arranged along the periphery of the glass 2 so as to be hidden by the black ceramic coating 5, and both ends 4a of the nichrome wire 4 are provided on one side of the glass 2. Alternatively, as shown in FIG. 4, the nichrome wire 4 may be divided into four sides of the glass 2 and the both ends 4a may be provided on each side.

The intermediate film 3 containing the nichrome wire 4 is preferably preformed in the manufacturing process, but it may be formed at the same time during the lamination before the preliminary pressure bonding. In this case, the interface of the intermediate film 3 is completely invisible.

To remove the laminated glass 1 attached to the vehicle body 7 by the laminated glass attachment structure according to the present invention from the vehicle body 7, a DC or AC voltage of 12V to 200V is applied according to the resistance value of the nichrome wire 4. , Heat up. And
The intermediate film 3 and the glass 2 are heated.

Usually, the intermediate film 3 is melted only by this heating, and the glass 2 is cracked along the nichrome wire 4 in the vicinity of the nichrome wire 4 and inside the adhesive 6. The laminated glass 1 is removed from the vehicle body 7 leaving only a part of the glass 2. Especially the black ceramic coating 5
Easy to break.

In some cases, the heated portion of the glass 2 can be removed from the vehicle body 7 by quenching the heated portion of the glass 2 with water or applying a force. Further, since the glass 2 is broken along the nichrome wire 4, the nichrome wire 4 and the glass 2 can be easily separated.

FIG. 3 is a cross-sectional view of a laminated glass mounting structure according to the present invention applied to heat ray reflective glass. Although the heat ray reflection is performed by the metal book film 8 or the like, in the present invention, since the non-conductive intermediate film 3 is used, the nichrome wire 4 and the metal book film 8 do not make electrical contact.

[0019]

As described above, according to the present invention, the glass is broken along the heating element by applying a predetermined current to the heating element, and the interlayer film is burnt out at the same time, so that the laminated glass is formed. Can be easily separated from the car body. In addition, by embedding the heating element when manufacturing the intermediate film, there is an advantage that it can be manufactured without changing the conventional production process.

Further, by supplying an electric current to the heating element such that the glass is not broken by the power supply (battery) mounted on the vehicle, it is possible to prevent the wiper from freezing during snowfall and to melt snow on the unwiped portion outside the wiper wiping range. is there.

Further, since the heating element is arranged on the intermediate film so as to be covered with the black ceramic coating, it does not spoil the aesthetics of the window glass for automobiles.

[Brief description of drawings]

FIG. 1 is a plan view of an automobile window glass made of laminated glass on which a heating element is arranged.

FIG. 2 is a sectional view of a laminated glass mounting structure according to the present invention.

FIG. 3 is a cross-sectional view in which the laminated glass mounting structure according to the present invention is applied to heat ray reflective glass.

FIG. 4 is a plan view of an automobile window glass according to another embodiment.

[Explanation of symbols]

1 ... Laminated glass, 2 ... Glass, 3 ... Intermediate film, 4 ... Nichrome wire (heating element), 4a ... Both ends of Nichrome wire, 5 ... Black ceramic coating, 6 ... Adhesive, 7 ... Car body.

Claims (2)

[Claims] 1. A laminated glass comprising a heating element having both ends exposed near the periphery of an intermediate film to assemble a laminated glass, and the laminated glass is attached to a vehicle body at an outer peripheral portion of the heating element. Mounting structure. 2. The mounting structure for laminated glass according to claim 1, wherein the heating element is arranged between glass surfaces coated with black ceramics.