JPS63159125A - Window member and manufacture thereof - Google Patents

Abstract

PURPOSE:To aim at improvement in holding fixedness of a glass plate and sealed state thereof, by forming integrally a molding or the like on both circumferential obverse and reverse of a window member such as a glass plate, with high foaming rate synthetic resin on the obverse and low foaming rate synthetic resin on the reverse. CONSTITUTION:A one-side-opened rectangle shaped molding or gasket 1 is formed integrally on both circumferential obverse and reverse of a window member 2 comprising a glass plate or a transparent plate-like member such as a synthetic resin laminate plate or the like. The head portion 3 of the outer obverse is made of high foaming rate synthetic resin and the reverse lower portion 11 is made of low foaming rate synthetic resin. A tangue like portion 5, projecting portions 8, an engagingly locking rib portion 6 and a reverse recess portion 10 for bonding agent application surface are formed as necessary. In this manner, the glass plate and like can be held flexibly and shock load on passengers against the window is reducibly alleviated, in the case of collision of a vehicle and further a sealing property, adhesiveness and fixedness are improved so that the watertightness and airtightness can be secured.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to window members made of transparent plate-like bodies, particularly glass plates, synthetic resin plates, etc., such as flat plate-shaped, bent plate-shaped raw or reinforced Single-panel, laminated, laminated, multi-layered, architectural window members and vehicle window members whose surfaces are treated with a film, etc., especially synthetic resin moldings or gaskets directly on the outer surface of the periphery of automotive window members. The present invention relates to a window member formed by integrally molding (hereinafter both simply referred to as molding) and a method for manufacturing the same.

[Conventional technology]

Conventionally, the means for attaching transparent plate-like bodies such as glass plates to vehicle window openings has been to fit them into the joint between the inner panel and outer panel of the vehicle body and the peripheral edge of the glass plate. The glass plate is attached to the car body through a separately molded weather strip, and the legs are inserted between the glass plate and the periphery of the glass plate mounting flange on the car body panel and fixed with adhesive. The so-called direct glazing method, which uses a molded peripheral molding, has been adopted, and the mounting method that has been attracting attention recently is to directly integrate a molding or gasket onto the outer surface of the peripheral edge of the glass plate in advance using a reaction injection molding method, etc. The so-called "Encap Sheresheen" method, in which a molded product is easily attached to a vehicle body using adhesives or the like, is being adopted.

Among them, for example, Japanese Patent Application Laid-Open No. 61-66645 describes a window material assembly and its manufacturing method, which includes a main body made of a transparent plate material and a transparent material overlaid and attached to at least one side of the main body. Tear-resistant window assemblies are disclosed having layers of synthetic resin material and gaskets formed and bonded in-situ around the peripheries of these areas and methods of making the same.

Furthermore, Japanese Utility Model Application Publication No. 61-158508 describes a windshield glass detachment structure, which includes a holding means for detaching the glass from the vehicle body when an impact to the windshield glass exceeds a predetermined value, and a gap between the glass and the vehicle body. Disclosed is an absorbing means attached directly to the windshield or through a holding means to absorb energy received by the glass when the glass moves, and is intended to reduce the collision load of an occupant against the windshield glass in the event of a vehicle emergency. etc. are known.

[Problem that the invention seeks to solve]

As mentioned above, the conventional method described in JP-A No. 61-66645 attempts to prevent tearing by providing a layer of transparent synthetic resin material on a transparent plate material. A polymer frame member is formed on site so as to surround the peripheral edge of the window material, and both the transparent board material and the synthetic resin material layer are intended to have sufficient adhesion at the peripheral edge, Rather, it is intended to sufficiently bond the transparent plate material and the synthetic resin material layer, and the polymer frame member surrounding the peripheral edge of the window material itself is not necessarily sufficient to absorb impact energy in the event of a collision. It is not something that was originally intended.

Furthermore, in the device described in Japanese Utility Model Application Publication No. 61-158508, the member provided at the end of the windshield glass has a complicated shape, the number of members is large, and the structure of the holding and absorbing means is complicated. The dimensions required a high loading capacity, installation work was inefficient, and the instrument panel of the vehicle body also required a certain shape.

[Means for solving problems]

The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and by making the molding or gasket made of synthetic resin at least made of synthetic resin having different physical properties, it is possible to create a sail or gasket that has more functionality. The present invention provides a window member integrally molded into a transparent plate-like body and a method for manufacturing the same.

That is, the present invention provides a window member in which a molding or gasket made of synthetic resin is integrally molded on the outer surface of the peripheral edge of a transparent plate-like body, and the density of the molding or gasket, that is, its physical properties, is different from that between the front and back portions or the surface layer portion. A window member characterized by having at least a difference in content.

Also, in a method of integrally molding a synthetic resin sail or gasket on the outer surface of the peripheral edge of a transparent plate-like body, a predetermined portion of the peripheral edge of the transparent plate-like body is placed in a mold, and the transparent plate-like body is held by the holding part of the mold member via a sealing material that also functions as a buffer material, and placed in a cavity space constituted by the inner surface of the mold member and the outer surface of the transparent plate-like body on the cavity mold side of the space. A window characterized in that a synthetic resin having at least different densities and different physical properties is injected into the core mold side or the inner surface side of the mold and the outer surface side of the transparent plate body and integrally molded, and then taken out from the mold. A method for manufacturing a member is provided.

Here, the transparency of the transparent plate-like body refers to transparent, translucent, colored, surface unevenness 81, etc., and the plate-like body is
Various types of glass for buildings and vehicles, including front, rear, and door glass for automobiles, such as flat glass, tempered glass by heat treatment or chemical treatment, laminated glass with glass plates, resin plates, etc., and heat ray reflective films. , anti-tear membrane,
Various types of inorganic glass such as laminated glass with surface treatment such as black frame, bent plate slate, multi-layer glass, polycarbonate, acrylic and hard coated synthetic resin plates such as scratch resistant, as well as these synthetic resin plates. Such as a laminate made of inorganic glass plates.

The molding that is integrally molded on the transparent plate-like body is applied to the peripheral edge of the transparent plate-like body all around or almost the entire circumference, and the shape of the sail can be various, but at least It is integrally molded on one of the front and back sides and the end face of the peripheral edge of the plate-shaped body, and it goes without saying that it is preferable to apply a primer to the required areas in advance to improve adhesive strength.
The outer surface of the molding preferably has a shape that satisfies a more aerodynamic structure and does not cause unpleasant wind noise, and is preferably provided with a tongue portion to improve the seal with the outer panel of the vehicle body. It is preferable that the back surface of the tongue piece has an uneven shape or a shape that has some kind of spring effect, and furthermore, a protruding piece is provided around the entire circumference of the transparent plate-like body on the rising surface corresponding to the end face side of the transparent plate-like body. It is preferable to provide a seal (for sealing) or to have a flexible hollow tube built into the surface of the tube so that it can be sealed, and also to fix it with adhesive when installing it in alignment with an opening in the vehicle body, etc. In order to secure the engagement, the back side of the molding has an uneven or concave shape to prevent the bead-shaped adhesive applied to this area from leaking, and a dam part is provided at the end for the purpose of sealing. It is preferable to provide at least one locking rib portion that serves to position the window member at the vehicle body opening, to secure it until the adhesive is fixed, and to assist in subsequent fixing.

The method for molding the molding can be a general synthetic resin molding method such as an injection molding method, and in particular RIM
Reaction Injection Moldi
ng), R-RIM method (particularly those containing reinforcing materials), LIM method (Liquid Injection
(Molding), R-L IM method (particularly those incorporating reinforcing materials), but among these, RI
It is preferable to use the M method. That is, while the temperature of the part of the mold surrounding the cavity space generally requires about 200 to 300 degrees Celsius, for example, the temperature of the part of the mold surrounding the cavity space is about
Room temperature, preferably as low as 50 to 80°C, is sufficient, and it is preferable to be able to control the temperature of not only the mold holding temperature but also the non-molded part, since it is possible to control the solidification rate, etc. = 1000kg/
crA and those that require extremely high pressure are normal pressure to about 6
kg/c+J range, preferably about 3kg/c
It is injected into the cavity space at a pressure of around 1000 yen, and has the advantage of having an extremely low pressure. The mold itself is not particularly limited, and may be made of general metal, resin, ceramic, etc., and the surface of the cavity space may be treated with a mold release agent, or a transparent plate-like material may be used. A substance that also serves as a sealing member and a buffering member different from the injected resin, so as not to damage or break the surface of the resin, and to absorb deformation of the mold and deformation of the transparent plate. For example, an elastic body such as a heat-resistant fluororesin or fluorine rubber, silicone resin or silicone rubber, or other soft resin, such as a single body, a foam body, a hollow body, or a composite body, is interposed between the transparent plate-like body and the mold surface and sealed. This goes without saying.

Synthetic resins used in the various molding methods described above, that is, synthetic resins that can be used in the present invention, include, for example, polyurethane resins, low density and high density polyethylenes, polystyrene, polypropylene, silicone resins, polyamide resins, and nylon=6. , thermoplastic resins such as EVA, PET, PBT', polyurethane-based, ethylene-vinyl acetate-based,
Examples include thermoplastic rubbers such as polyolefin and styrene-butadiene, and thermosetting resins such as vinyl ester resins, epoxy resins, silicone resins, and unsaturated polyester resins, as well as blend resins and foamed polyurethane. It can be widely used such as elastomers and elastic rubbers, and it can also be used as ultraviolet absorbers, colorants,
It goes without saying that fillers such as catalysts, blowing agents, and stabilizers that control the reaction rate, as well as reinforcing agents such as glass fibers and glass flakes, may be added. It is necessary to take into account strength, thermal expansion coefficient, shrinkage ratio, surface texture, etc.

[Effect]

+iiJ As mentioned above, the window member and the manufacturing method of the present invention combine various different densities and integrally mold them to obtain a molding or gasket with more functionality, and can be used in various unique ways according to the purpose. This can be used as a window member.

That is, for example, by selecting different foaming rates or densities for the head and lower part of the molding or gasket integrally molded on a predetermined part of the outer surface of the peripheral edge of the transparent plate-like body, or for the head, lower part, and tongue part. This allows the transparent plate-like body to be held more flexibly, absorbing the impact energy of objects, and reducing the impact load on the windshield glass of the occupants in the event of a vehicle collision. To be able to flexibly deal with irregularities such as variations in surface inclination accuracy and distortion between a window member and a frame portion of a vehicle body outer panel, etc. when attached to a board, etc., thereby improving sealing performance, adhesion, and fixing performance. is made, watertight,
The airtightness can be maintained better, stress is not generated, and it can be easily automated by machines.
This eliminates damage, breakage, etc. to the transparent plate itself, and also eliminates the work of attaching and pasting each component, which was previously done after installing the window component, and the resin surface layer itself is removed. The skin layer makes it possible to achieve an aesthetically pleasing finish.

〔Example〕

An embodiment of the present invention will be described below.

FIG. 1 is a partial side sectional view of the molding or gasket part of the window member of the present invention, which is provided with a locking rib part integrally molded with synthetic resin of different densities at the head and lower part;
The molding or gasket L is directly integrally molded onto a predetermined portion in a substantially U-shape on the front and back surfaces of the transparent plate-like body 2 at its peripheral edge, and the head 3 from approximately the center of the end face of the transparent plate-like body to the outer surface 4 is foamed. The lower part 11 from approximately the center of the end surface to the back surface is made of a synthetic resin with a low foaming rate, and the outer surface 4 is made of a synthetic resin with a high foaming rate, and the outer surface 4 is made of synthetic resin that has a high foaming rate. etc., to form a skin layer, the tip of the recess 3 is provided with a tongue portion 5, the back surface 7 has an uneven or/and concave surface to improve sealing performance, and the rising surface 9 is further provided with a protrusion portion 8. A concave portion 10 is provided on the back surface of the molding or gasket (1) to enable adhesive to be applied in a straight line, and a locking rib portion 6 is provided, for example, to secure the opening of the vehicle outside the vehicle body. It is designed to be used for positioning when attaching to a board, for fixing until adhesive is fixed, and as a fixing aid after fixing. Note that as a place for the adhesive to escape, a groove-like recess may be appropriately provided on the rising surface side.

FIG. 2 is a partial side sectional view of another embodiment of the window member of the present invention that does not include a locking rib portion, and this portion also has a locking rib portion that is extended continuously in the longitudinal direction. However, it is preferable to provide a dam portion 12 as shown in the figure to prevent leakage of the adhesive because the amount of synthetic resin is smaller and the workability is improved, leading to improved efficiency. The head 3 portion is made of a synthetic resin with a low expansion rate, and the lower part 11 is made of a synthetic resin with a high expansion rate.

FIG. 3 is a partial side sectional view showing a set state immediately before injection of liquid synthetic resin, etc. in the mold 13 when manufacturing the window member of the present invention, and the mold 13 is a core mold 14 in the lower portion.
and a cavity mold 15 in the upper part, and both mold members 14.
15 is a mating type that can be opened and closed. First, the image part is opened and the transparent plate-like body 2 is placed on the core mold 14 with a sealing material (buffer material) 18 in between so that the peripheral edge part comes into contact with a predetermined part. place Next, the cavity mold 15 is sealed (buffer material) 18
The transparent plate-like body 2 is brought into contact with the upper part of the transparent plate-like body 2 through the mold members, and the transparent plate-like body 2 is clamp-sealed by the clamping portions 20 of both mold members to form a cavity space and complete the set.

In addition, in the example of this drawing, the synthetic resin injection inlet is
They are provided at several locations (not shown) around the entire circumference of the transparent plate-like body 2. Furthermore, although not shown in the figure, each mold part can be temperature-controlled and maintained at an appropriate temperature, and is used to heat shock the transparent plate, foam the synthetic resin, or form a skin layer. It is controlled by considering the following. It goes without saying that liquid synthetic resin or raw materials can be injected from one or more locations at any time.

FIG. 4 is a partial side sectional view showing a state in which the window material of the present invention shown in FIG. 1 is attached to the vehicle body outer panel 21 at the vehicle opening with an adhesive 22, 23.

FIG. 5 is a partial side sectional view showing an embodiment of the window material of the present invention shown in FIG. 4, in which the spring material 24 is integrally molded and reinforced. 26, etc., to enable more reliable molding.

〔Effect of the invention〕

As mentioned above, according to the present invention, it is effective in improving safety by preventing lacerations in the event of a collision, etc., and also enables reliable installation, and improves the aerodynamic structure. It also does not cause unpleasant wind noise, improves fuel efficiency, prevents rainwater from entering, prevents dust from accumulating, improves appearance quality, and improves weather resistance. When installing, positioning is easy, shock is alleviated, stress is prevented, robotization makes it consistent, eliminates the effects of scratches and damage to the transparent plate, provides a sufficient lifespan, and is economically superior. It is something.

In addition, based on the present invention (window members can be used not only for buildings, vehicles, etc.
It can be used as a window member in a wide range of applications such as appliances and ships.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partial side cross-sectional view of a window member of the present invention in which the molding or gasket is provided with a locking rib portion, and FIG. 2 is a partial side sectional view of another embodiment of the present invention. FIG. 3 is an explanatory diagram for carrying out the method according to the present invention, and is a partial side sectional view showing a state in which the molding or gasket is set in the mold before molding in a window member. , FIG. 4 is a partial side sectional view showing a state in which the window member of FIG. 1 is attached to the outer panel of a vehicle body, and FIG. 5 is a partial side sectional view showing a state in which another window member of the present invention is attached to the outer panel of a vehicle body. FIG. I I-- Molding or gasket, 2-- Transparent plate-shaped body, 5-- Tongue section, 6-- Locking rib section, 10-- Recessed portion on back surface, 12-
・-Dam part, 13・-type, 14- core type, 15-
Cavity type, 16... Cavity space, 18-
Sealing material, 21---Vehicle body outer plate, 24- Spring material

Claims (2)

[Claims] (1) In a window member formed by integrally molding a synthetic resin molding or gasket on the outer surface of the peripheral edge of a transparent plate-like body,
A window member characterized in that the molding or gasket has at least different physical properties between its front and back portions or between its surface layer and its contents. (2) In a method of integrally molding a synthetic resin molding or gasket on the outer surface of the peripheral edge of a transparent plate-like body, a predetermined portion of the peripheral edge of the transparent plate-like body is placed in a mold, and the transparent plate The shaped body is held between the clamping portions of the mold member via a sealing material, and the cavity mold side and the core mold side of the cavity space constituted by the inner surface of the mold member and the outer surface of the peripheral edge of the transparent plate-like body are placed. A method for manufacturing a window member, which comprises integrally molding the inner surface of the mold or the outer surface of the transparent plate by injecting a synthetic resin having at least different physical properties into the inner surface of the mold and the outer surface of the transparent plate, and then removing the mold from the mold.