JPH0737849U - Vehicle window structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a window structure for a vehicle in which the water resistance of a transparent window material is enhanced. A silane coupling agent 17 is provided on a portion of the inner surface of the outer glass plate 11 and the outer surface of the inner glass plate 12 corresponding to the outer peripheral portion of the polyvinyl butyral 13, specifically, a portion 50 mm from the outer end. It has been applied.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a window structure for railway vehicles and the like.

[0002]

[Prior art]

 Along with the increase in speed of vehicles, a window structure of a vehicle is also adopted in which a transparent window material such as a glass plate is hermetically joined to a window frame formed on a vehicle body outer plate so that it cannot be opened and closed. When the vehicle runs at high speed, if there is a step on the outer surface between the transparent window material and the vehicle body skin, noise is generated at this step and the air resistance also increases in proportion to the square of the speed. Therefore, the energy loss also increases. Therefore, in the past, a step portion was formed on the outer peripheral edge of the transparent window material, and the window frame portion of the vehicle body outer plate was inserted into this step portion, so that the outer surface of the transparent window material and the outer surface of the vehicle body outer panel were covered. The sides are flush with each other.

As a method of forming a step on the outer peripheral edge of the transparent window material, there are a method of cutting the outer edge of one transparent window material, a small transparent plate and a large transparent plate. There is a method of joining via a resin intermediate film.

[0004]

[Problems to be solved by the device]

 Not only is it troublesome to perform cutting on the outer edge of one transparent window material, but cracks are likely to occur. On the other hand, when two transparent plates with different dimensions are joined via a resin intermediate film such as polyvinyl butyral, the contact force of polyvinyl butyral, etc., with water may significantly reduce the adhesive strength and cause peeling. There is.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is to insert a window frame portion of a vehicle body outer plate into a step portion formed on an outer peripheral edge of a transparent window material such as a laminated glass, so that the outer surface of the transparent window material and the vehicle body outer plate are In a vehicle window structure in which the outer side surface of the vehicle is flush with the outer side surface of the vehicle, the transparent window material is formed by joining a small-sized outer transparent plate and a large-sized inner transparent plate through a resin intermediate film. A step is formed at the edge, and a silane coupling agent is applied to the inner surface of the outer transparent plate and the outer surface of the inner transparent plate corresponding to the outer peripheral portion of the resin intermediate film. .

[0006]

[Action]

 The silane coupling agent has a halogen or methoxy group at one end of the silane molecule, and has a group that reacts with an organic substance such as a vinyl group, an epoxy group, an amino group, and an aminoalkyl group at the other end, and as a result, is an organic substance. The resin intermediate film and an inorganic transparent plate such as a glass plate are firmly bonded.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a cross-sectional view of a vehicle window structure according to the present invention, FIG. 2 is a cross-sectional view of a main part of a window material forming the window structure, and FIG. 3 is a cross-sectional view of a main part of the window material before joining. Is.

In the figure, reference numeral 1 denotes a frame. A vehicle outer plate 2 is attached to the frame 1, and presser fittings 4 and 5 are fixed to the frame 1 with bolts 3. The angle member 6 is fixed between the outer plate 2 and a spacer 7 which forms a U-shaped groove between the angle plate 6 and the outer plate 2 in the gap formed between the holding metal fitting 6 and the outer plate 2. .

Further, the laminated glass 10 as a transparent window material attached to the window frame formed on the vehicle outer plate 2 includes a small-sized outer glass plate 11 and a large-sized inner glass plate 12 as a resin interlayer. And a step portion is formed on the outer peripheral edge of the laminated glass 10 due to this dimensional difference, and the end portion that defines the window frame of the outer plate 2 is inserted into this step portion. The outer surface of the laminated glass 10 and the outer surface of the vehicle body outer plate 2 are flush with each other.

Further, the peripheral edge portion of the inner glass plate 12 constituting the laminated glass 10 is fitted into the U-shaped groove formed by the spacer 7 via the elastic packing 14, so that the outer glass plate 11 and the outer plate 2 are joined together. A sealant 15 is filled in the gap. The spacer 7, the metal fittings 4, 5 and the spacer 7 are covered with a cover 16.

By the way, silane is formed on the inner surface of the outer glass plate 11 and the outer surface of the inner glass plate 12 corresponding to the outer peripheral portion of the polyvinyl butyral 13, specifically, about 50 mm from the outer end. Coupling agent 17 is applied.

As the silane coupling agent 17, there is, for example, a known organic silane compound having two or more functional groups with one element sandwiching an Si element, and specifically, γ-aminopropyltriethoxy is used. Silane, vinyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, etc. In particular, γ-aminopropyltriethoxy silane has excellent adhesiveness.

The above silane coupling agent is usually diluted in an organic solvent to a solution of 1 to 5%, preferably 1 to 3% to prepare a coating solution. As the organic solvent, alcohol, acetone or the like is preferably used. When alcohol is used as a diluting solvent, a lower alcohol having an alkyl group with 1 to 5 carbon atoms, which has a relatively low evaporation rate, is desirable. If necessary, an organic acid such as acetic acid or propionic acid or an inorganic acid such as hydrochloric acid or nitric acid can be contained in the coating solution as a hydrolysis accelerator of the silane coupling agent.

A coating solution obtained by dissolving such a silane coupling agent in a solvent is applied to the above-mentioned surface by a brush coating method or a spray method, and then the outer glass plate 11 and the inner glass plate 12 are heated. Joined by crimping method to make a finished product.

FIG. 4 is a view similar to FIG. 2 showing another embodiment. In this embodiment, the inner glass plate 12 is made thin and another glass is provided further inside the inner glass plate 12. The plate 20 is provided via a spacer 21 to form a space 22 inside.

Specific Examples (Embodiment 1) A 3 mm-thick glass plate on the outside of the vehicle and a 2 mm-thick transparent glass on the inside of the vehicle, which is smaller than the glass plate on the outside by 30 mm in the entire circumference, are prepared. Then, 1% isopropyl alcohol solution of γ-aminopropylethoxysilane (A1100 manufactured by Nihon Unicar) is applied with a dust-free cloth by about 50 mm or more from the stepped edges of both glasses. Next, a 0.38 mm-thick polyvinyl vinyl chloride film was sandwiched between a glass plate on the outer side of the vehicle and a glass plate on the inner side of the vehicle to be laminated, and the air between the glass and the film was degassed while the laminated body was heated to 110 ° C. While heating to 150 ° C., pressure was applied at a pressure of 14 kg / cm ² to cause heat fusion to obtain a stepped laminated glass. After placing the above stepped laminated glass in a high temperature and humidity resistant tank (50 ° C-95% RH) for 2 weeks, a pulsation test was performed 100,000 times at a pressure of 750 mmAq, and it was confirmed that the stepped part did not peel. did.

Example 2 A stepped laminated glass was prepared in the same manner as in Example 1 except that γ-methacryloxypropyltriethoxysilane was used as the silane coupling agent, and the same experiment as described above was performed. Was done. The results were similar.

Further, the following (Table 1) is a comparison of adhesive strength (shear adhesive strength and peel strength). From this (Table 1), the stepped window material according to the present invention has excellent adhesive strength. I know that

[0019]

[Table 1]

[0020]

[Effect of device]

 As described above, according to the present invention, when two transparent plates such as glass plates are bonded to each other via a resin interlayer to form a stepped window member, the outer peripheral portion of the transparent plate is covered with a resin. Since the silane coupling agent is interposed between the oil interlayer film, the adhesive force of the interlayer film does not decrease due to the influence of water. Therefore, as a window structure of a vehicle, there is a step portion in which the window frame portion of the vehicle body outer plate is inserted into the outer peripheral edge of the transparent window material so that the outer surface of the transparent window material and the outer surface of the vehicle body outer surface are flush with each other. As a laminated glass or the like, which is bonded with an interlayer film such as polyvinyl butyral, can be used, the production is easier and cracking does not occur as compared with the case where one glass plate is stepped.

[Brief description of drawings]

FIG. 1 is a sectional view of a vehicle window structure according to the present invention.

FIG. 2 is a cross-sectional view of a main part of a window material forming the window structure.

FIG. 3 is a cross-sectional view of main parts showing a state before joining of window materials.

FIG. 4 is a view similar to FIG. 2 showing another embodiment.

[Explanation of symbols]

1 ... Frame, 2 ... Vehicle exterior plate, 10 ... Laminated glass, 11
... outer glass plate, 12 ... inner glass plate, 13 ... polyvinyl butyral, 17 ... silane coupling agent.

Claims (1)

[Scope of utility model registration request] 1. An outer surface of the transparent window member and an outer surface of the vehicle body outer plate are flush with each other by inserting a window frame portion of the vehicle body outer plate into a step portion formed on an outer peripheral edge of the transparent window member. In the vehicle window structure described above, the transparent window member has a stepped portion formed on the outer peripheral edge by joining a small-sized outer transparent plate and a large-sized inner transparent plate with a resin intermediate film interposed therebetween. A vehicle window structure characterized in that a silane coupling agent is applied to a portion of the inner surface of the outer transparent plate and the outer surface of the inner transparent plate corresponding to the outer peripheral portion of the resin intermediate film.