MXPA99011644A - Bullet-proof glass for a vehicle - Google Patents

Abstract

The present invention relates to a bulletproof glass window, in particular for use as a lowerable side window of a motor vehicle, with plural glass panes (1, 3, 5) arranged in layers and laminates (2, 4), with at least one laminate being positioned between two adjoining glass panes in each case, in order to join the two glass panes, with a grading or stepped portion that is formed at the edge of the bulletproof glass window and with a projection (8) for lodging the bulletproof glass window in a chassis (14) or door frame, and with a metal armoring which, in the area of the projection (8), at least covers the inner surface of the projection, in the area of the grading or stepped portion a recess (12) being formed on the face, and the metal armoring (6) extending into the recess (12)

Description

GLASS WINDOW PROOF OF BULLETS FOR MOTOR VEHICLE DESCRIPTION OF THE INVENTION The present invention relates to a bullet-proof glass window, in particular for use as a collapsible side window of a motor vehicle, with an interposed structure of glass sheets and with a metal reinforcement or reinforcement on the edge of the window. the bulletproof glass window. Such a window sheet made of bulletproof glass for a motor vehicle is known from document 41 42 416 A1. The known window sheet comprises several sheets of glass in an interposed structure, five in total, of which the two outer glass sheets are projected surpassing the other glass sheets on the edge of the bulletproof glass window to form a step on one face of the bulletproof glass window. An inclined glass-proof element of the steel sheet or a metal reinforcement is manufactured in the stepping to prevent projectiles hitting the edge or the marginal area of the bulletproof window at an unfavorable angle, penetrate the bulletproof window. However, major modifications are required so that the chassis or vehicle frame must be adapted to accommodate the measures of the bulletproof glass window.

In DE 195 39 607 Al, a bulletproof glass window is described as a windscreen, which is formed as a sheet of laminated glass made of five sheets of glass with laminates or laminations therebetween. A glass sheet is projected surpassing the other glass sheets on the edge of the bulletproof glass window to form a stirrup or protruding portion or projection. With the projection, the known bullet-proof glass window is accommodated and engaged in an opening or slot of a chassis or door frame when the bulletproof glass window, for example, is driven upwardly in energy. a motor vehicle to close the window. In this case, a further modification of the chassis of the motor vehicle is not necessary, but in the case of a firearm attack against the edge of the known bulletproof glass window, the bullets may nevertheless enter the vehicle. inside the motor vehicle because the projection itself is not enough to withstand the bullets. In the case of a blast or blow with a blunt instrument or a shock wave, the projection may break or burst and the glass sheet may fall inward. In DE 197 45 248, a bulletproof glass window with a metal insert is described, which shows a construction with four sheets of glass laminated in a multi-layered structure. The outer glass sheet projects over the other glass sheets to provide a projection so as to maintain a bulletproof window device over, for example, a chassis. The interior surface of the projection is completely covered with a metallic insert as reinforcement. The faces of the glass sheets additionally placed inside form a surface in the same plane, the face of the recessed glass sheet adjacent to the boundaries of the outer sheet is in the same plane as the metal insert in the transitional region. A violent blasting on the outside of the glass sheet or a shock wave of an explosion or the like may cause the outer glass sheet to break at a point where the transition region mentioned above joins. In unfortunate circumstances, can it occur at this point unites? circumferential rupture around the entire frame if a violent blast hits the bulletproof glass window from the outside; This can cause the glass sheet to fall inside the motor vehicle. The object of the present invention is to exclude this risk of rupture at the edge of the bulletproof glass window. This problem is solved by the bulletproof glass window according to claim 1. Accordingly, the bulletproof glass window of the invention has, in particular for use as a hinged side window of a motor vehicle, several sheets of glass in an interposed structure, for example, made of bulletproof glass and material At least one layer of composite material is placed between two adjacent sheets of glass, in order to join the two sheets, a stepped or stepped portion formed at the edge of the bulletproof glass window and having a projection to allow the bulletproof glass window to lodge or engage in a chassis or door frame, and a metal reinforcement or armor covering at least the interior surface of the projection or the surface of the projection that it is oriented inwardly, a recess is formed on the face of the stepped or stepped portion, and the reinforcing or metallic armature extends into the recess. The bulletproof glass window of this invention has a considerable advantage in that the weak point or the location of the projection in the transition region between the metal armature extends into the slot, and consequently is enclosed or rather covered and held on the inside and outside by the sides of the recess or by the adjacent glass or by adjacent or limiting glass sheets; and therefore a break or cut of the projection at the weak point is avoided. Therefore, due to this invention, it can be prevented that the bulletproof glass window falls inside the motor vehicle as a result of a blast or other impact that is supplied from the outside of the vehicle.

Furthermore, due to the metallic armor of the bulletproof glass window according to the invention, a projectile incident on the marginal area of the glass sheet will definitely prevent the interior of the vehicle from penetrating. The bulletproof glass window of the interior therefore makes it possible to provide optimum protection for passengers in the vehicle, although the bulletproof glass window is only held in a standard motor vehicle door frame or frame by a relatively narrow protection in its marginal area, without the need for a complicated and expensive modification of the motor vehicle, which considerably facilitates the lining of light armor or a heavy armor lining of a motor vehicle, even if it is replaced in a later date. A preferred embodiment of the bulletproof glass window according to the invention has at least one outer glass sheet, at least one inner glass sheet and at least one intermediate glass sheet that is placed between the sheets of outer and inner glass, the outer glass sheet protrudes over the other glass sheets to form the projection, and the inner glass sheet protrudes beyond the intermediate glass sheet in one area of the projection to form the recess for reinforcement or the metal armor between the inner glass sheet and the outer glass sheet. Insofar as the inner glass sheet protrudes over the middle glass sheet, it is superimposed on the region or weak point between the metallic reinforcement and the intermediate glass sheet and reliably avoids cutting the projection in the area of the glass pane. weak point . This preferred construction of the bulletproof glass window, according to the invention, can simply be made as a recess which is formed simply by using an intermediate glass sheet which is comparatively smaller than the inner glass sheet. The metal reinforcement or the metal insert is preferably fixed by means of a polyurethane layer on the adjacent glass sheet or on the outer glass sheet. The use of polyurethane as a laminate or composite material between the metal framework and the surface of the glass provides a particularly long-lasting and stable composite material. The metal framework can establish a boundary in the same plane with the face of the intermediate glass sheet, which simplifies the manufacture of the bulletproof glass window, according to the invention. The metal framework can be formed as a flat strip, or as a flat frame extending circumferentially along the edge of the bulletproof glass window, or as a frame section, which further simplifies processing and allows a complete reinforcement without any weak point. The metal armor, however, can also be designed, for example, as an inclined element and enclose or cover a larger area of the stepped or stepping portion. The thickness of the metal reinforcement may be less than the interior of the internal width of the recess to provide, for example, a vacuum or hollow space within the recess to accommodate a process tolerance or a variable thermal expansion of the metal reinforcement and glass . Preferably, such a hollow space between the metal framework and the adjacent glass sheet and / or between the metal framework and the adjacent laminates and the glass sheets or the composite layers within the recesses is filled with a sealant or sealed for the purpose to protect the edges and faces of the laminates and the transitions or junctions between the layers that might otherwise be exposed to harmful elements and corrosion. Additional advantageous embodiments of the present invention are mentioned in the dependent claims. The additional advantages, advantageous modalities and possibilities of application of the present invention are given in the following description of a preferred embodiment of the subject matter of the invention in relation to a single drawing. Figure 1 shows the single drawing in a partial cross-sectional view of a preferred embodiment of the subject matter of the present invention, with a vehicle frame indicated by a dashed line. Figure 1 shows a preferred embodiment of the bulletproof glass window according to the invention which is formed as a laminated glass and which comprises several glass sheets 1, 3 and 5 and a metallic reinforcement 6. In the following, the embodiment of the invention shown in FIG. 1 will be explained in detail, with reference and by way of example, with the use of the bulletproof glass window according to the invention as a lateral folding window of a motor vehicle. The bulletproof glass window according to the invention comprises several glass sheets 1, 3 and 5 which are arranged in interposed or laminated construction, wherein the innermost glass sheet 5 is placed towards the interior of the motor vehicle , the outermost glass sheet 1 is placed towards the outside of the motor vehicle, and the intermediate glass sheet 3 is placed between the outer glass sheet 1 and the inner glass sheet 5, the inner glass sheet 5 can be thicker than the other glass sheets. The exterior of the motor vehicle is marked by means of an arrow A in figure 1, the arrow pointing towards the outer glass sheet. A polyurethane layer 2 extends between the outer glass sheet 1 and the intermediate glass sheet 3, and forms a composite or composite between the outer glass sheet 1 and the intermediate glass sheet 3. The polyurethane layer 2 or the polyurethane film or sheet are identical in shape and area to the outer glass sheet 1. For example, there is an additional layer of polyurethane 4 between the intermediate glass sheet 3 and the inner glass sheet 5 which also establishes a firm composite between the intermediate glass sheet 3 and the inner glass sheet 5. The polyurethane layer 4 is identical in area to the adjacent surface of the intermediate glass sheet 3. The outer glass sheet 3 protrudes over the other two sheets of glass 3 and 5 at the edge of the bulletproof glass window with a projection 8, which forms a staggered or stepped portion towards the other sheets of glass 3 and 5 on the face or edge of the bulletproof glass window. In the area of the projection 8, on the inwardly facing surface 10 of the polyurethane layer 2, the metallic reinforcement 6, made for example of a steel sheet, is mounted on the surface 10, which is oriented inwards, and this metallic armor can be formed as a metal frame which is placed on the edge of the bulletproof glass window, forming a composite or firm composite with the outer glass sheet 1 by means of the polyurethane layer 2. On one side 9 of the bulletproof glass window or on the face of the projection 8, the outer glass sheet 1, the polyurethane layer 2 and the metal reinforcement 6 are in the same plane. The metal framework 6 has a rectangular cross section. The projection 8 with the metal armor 6 is held in a frame 14 of a motor vehicle, which is indicated in a cross section by a broken line in figure 1, and which extends in the roof area of the vehicle of motor. In the position shown in Figure 1, the bulletproof glass window contacts the frame 14 and the projection 8. The side sheet shown in this manner is raised and the window closed. The inner glass sheet 5 protrudes above the intermediate glass sheet 3 in the staggering area of the bulletproof glass window shown, whereby a recess 12, or rather a groove or opening, is formed. in the area between the inner glass sheet 5, the intermediate glass sheet 3, which is in the same plane as the polyurethane sheet 4 on the face, and the polyurethane layer 2. The metal framework 6 extends within the recess 12 and similarly limits the butt joint on the face of the intermediate glass sheet 3, wherein a gap or distance between the face of the metal frame 6 and the intermediate glass sheet 3 which is opposite each other is provided within the recess 12. On the face, the inner glass sheet 5 is placed with a sealant 7. , for example, made of polyurethane, which also fills or seals the hollow spaces 11, including the separation between the opposite faces of the metal armor 6 and the intermediate glass sheet 3, within the recess 12 between the limit surfaces of the metallic armor 6. The intermediate glass sheet 3, the polyurethane layer 4 - or the base 13 of the recess 12, the inner glass sheet 5 and the polyurethane layer 2 within the recess 12. In a bulletproof glass window exemplified by the invention, the thickness of the outer and intermediate glass sheets 1 and 3 is 4 mm respectively, the thickness of the inner glass sheet 5 is 8 mm, the thickness of the polyurethane layers 2 and 4 is 1 mm respectively , and the thickness of the 6 steel reinforcement is about 2.5 mm. In the interior or on the interior surface of the inner glass sheet 5, an additional series of polyurethane and polycarbonate layers can be applied over the entire surface, in this order, the thickness of this additional polyurethane layer is approximately 1.9 mm , and the thickness of the polycarbonate layer is approximately 2.5 mm. A cut of the projection 8 near or in the transition region between the metal armor 6 and the inner glass sheet 3 is prevented by the superimposed form of the intermediate glass sheet 5 when considering the surface of the metal armor 6 towards the which is oriented. In the manufacture of the bulletproof glass window according to the invention shown in Figure 1, the outer glass sheet 1 and the intermediate glass sheet 3 first of all washed and dried on a production line Of transport. Subsequently, an interposed construction was manufactured in a dust-free and air-conditioned room. During this process, a polyurethane film that is 1 mm thick - from a typical range of sheet thicknesses between approximately 0.3 mm and 5 mm - is placed manually, semi-automatically or completely automatically and aligned over the entire area of the surface of the outer glass sheet 1 to which it is oriented, such that the applied polyurethane film covers the entire interior surface of the glass sheet 1. Subsequently, the intermediate glass sheet 3 is placed on the polyurethane layer 2 and is aligned in such a way that in the marginal area of the bulletproof glass window to be produced, a stepped or stepped portion is formed. circumferential and uniform, or the outer glass sheet protrudes in the marginal area on the intermediate glass sheet 3 with a projection section 8. On the exposed surface of the polyurethane film or the polyurethane layer 2, which runs circumferentially along the edge, a frame with a rectangular cross section that has previously been made of stainless steel or has been punched therefrom, now it is placed on a metallic reinforcement 6, the width of the frame of the steel sheet corresponds to the width of the layer 2 of exposed polyurethane, similar to the frame, and this in turn is covered by the metallic reinforcement 6. Between the butt joint of the adjacent faces of the intermediate glass sheet 3 and the metal reinforcement 6, a thin strip of polyurethane film is inserted, which subsequently forms part of the seal 7. The function of the thin polyurethane strip is counter or compensate the movements between the metallic armor 6 and the adjoining part or further join the glass sheet 3, which arises due to differential thermal expansion. In addition, the polyurethane strip is designed to counteract or compensate for a possible tolerance process of the metallic armor 6 and the glass sheet 3 in the transition area between the metal armor 6 and the intermediate glass sheet 3. From the interposed construction prepared in this waySubsequently, a prelaminate is produced with partial plasticized films when heating and pressing in a so-called pre-rolling oven, the position of the metallic reinforcement 6 which is observed by means of suitable separators. In the course of the preparation treatment, the enclosed air is removed by pressure almost completely from the interposed construction. Subsequently, the interposed structure that has been pretreated in this way is placed in an autoclave. In this autoclave, defined cycles with pressure and temperature precision are generated, and the unique components of the pretreated interposition construction are joined together. During the autoclave cycle, the interior of the autoclave is first heated to a temperature between 120 ° and 150 ° C, preferably 130 ° C under a pressure of 2 to 15 bar, preferably 14 bar. Once the points established for pressure and temperature have been reached, they are maintained during a retention time in the autoclave. Subsequently, the temperature in the autoclave is first reduced and then the pressure, and the interposition construction that has been treated in this way is removed. In the next step, a polyurethane film, such as a polyurethane layer 4, is placed and aligned over the entire area of the now exposed surface of the intermediate glass sheet 3. On this lined polyurethane film, the previously cleaned inner glass sheet 5 is positioned and aligned such that the inner glass sheet 5 protrudes above the face of the intermediate glass sheet 3 and is partially superimposed on the frame 6 metallic, as can be seen in figure 1. As the inner glass sheet 5 protrudes beyond the intermediate glass sheet 3 on the face, in this way a recess 12 is formed between the outer glass sheet 1 and the sheet 5 of inner glass, in which the metallic armor 6 extends. Subsequently, an angle piece of polyurethane film is placed on the face of the inner glass sheet 5, one side or leg of the angle piece is retained in the recess 12 and the other side of the leg completely covers the face of the inner glass sheet 5. After completing the bulletproof glass window according to the invention, the inclined polyurethane strip seals the spaces 11 within the recesses 12 and the face of the inner glass sheet 5, and therefore forms part of the seal 7. The interposed construction prepared in this way is now heated and pressed again in a pre-rolled oven in order to almost completely remove the air inside and around the polyurethane layer 4 and the sealant 7, and to obtain a partial plasticization of the polyurethane film of the polyurethane layer 4, and of the polyurethane material of the seal 7. The prelaminated glass sheet thus obtained is then treated again in an autoclave, carried out again the pressure and temperature cycles explained previously in order to obtain a durable and firm union of the entire pre-laminated glass sheet. The basic methods of manufacture of laminated glass sheets of bulletproof glass windows are explained, for example, in DE 197 45 160 A1 under the title "Verfahren und Vorrichtung zur Herstel-lung von Verbundsicherheitsglas" (Method and apparatus). for the manufacture of laminated safety glasses), and the patent application open to the public not examined DE 197 114 59 Al under the title "Verfahren zur Herstellung einer gebogenen Verbundsicher heitsglasscheibe" (Method for the manufacture of a laminated safety glass sheet curved), documents to which reference is made. In other embodiments, the bulletproof glass window according to the invention may comprise several outer glass sheets and / or several intermediate glass sheets and / or several interior glass sheets.

Claims (8)

1. A bulletproof glass window, in particular for use as a hinged side window of a motor vehicle, with several sheets of glass placed in layers and laminates, with at least one laminate placed between two adjacent glass sheets, with in order to join the two sheets of glass, with a stepped or staggered portion that is formed at the edge of the bulletproof glass window and with a projection for housing the bulletproof glass window in a frame or door frame, and with a reinforcement or a metal frame which, in the area of the projection, covers at least the interior surface of the projection, characterized in that a recess is formed on the face in the area of the projection, and wherein the reinforcement of the metal framework extends into the recesses.

2. The bulletproof glass window, as described in claim 1, characterized in that at least one outer glass sheet, at least one inner glass sheet and at least one intermediate glass sheet, which is placed between the outer glass sheet and the inner glass sheet, wherein the outer glass sheet protrudes beyond the other glass sheets to form the projection, wherein the inner glass sheet protrudes beyond the intermediate glass sheet in the area of the projection to form the recess to accommodate the metal reinforcement or armor between the inner glass sheet and the outer glass sheet.

3. The bulletproof glass window, as described in claim 2, characterized in that the metallic reinforcement is placed on the adjacent glass sheet or the outer glass sheet by means of a polyurethane layer.

4. The bullet-proof glass window, as described in claim 2 or 3, characterized in that the metal armature joins the intermediate glass sheet and the face.

5. The bulletproof glass window, as described in any of claims 4, characterized in that the metal reinforcement is formed as a flat strip, a flat circumferential frame or a frame section on the edge of the glass window a Bullet proof .

6. The bulletproof glass window, as described in any of claims 1 to 5, characterized in that the thickness of the metallic reinforcement is smaller than the inner width of the recess to form a hollow space in the recess.

7. The bulletproof glass window, as described in any of the preceding claims, characterized in that the hollow space between the metal frame and the adjacent glass sheets and / or between the metal frame and the adjacent laminates is filled by means of a sealant inside the recess.

8. The bulletproof glass window, as described in claim 7, characterized in that the polyurethane material is used as the sealant.