Aircraft windshield glass with double-row bolt structure and anti-splashing function

Abstract

The utility model discloses airplane windshield glass with a double-row bolt structure and an anti-splashing function. The airplane windshield glass comprises outer-layer glass, middle-layer glass, inner-layer glass, an upper-layer frame, a middle-layer frame, a lower-layer frame and an aluminum pressing ring. The outer-layer glass, the middle-layer glass and the inner-layer glass are sequentially arranged from top to bottom and are respectively bonded together; the upper-layer frame adheres to and surrounds the end of the middle-layer glass, and the middle-layer frame adheres to and surrounds the end of the inner-layer glass. Thin insertion sheets are respectively adhered to the upper and lower sides of the upper-layer frame and the middle-layer frame, and each thin insertion sheet extends to the edges of the middle-layer glass and the outer-layer glass; the aluminum pressing ring is installed on the upper surface of the upper-layer frame through waterproof sealant and extends to the end of the outer-layer glass in a surrounding mode. The lower-layer frame is adhered to the lower surface of the middle-layer frame and extends to the edge of the inner-layer glass; and an anti-splashing film layer is arranged on the lower surface of the inner-layer glass. The device is simple and convenient to mount and dismount and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of transparent windshield parts of aircrafts and aircrafts, in particular to an aircraft windshield glass with a double-row bolt structure and an anti-splashing function. Background Art

[0002] There are currently two main types of interface installation forms between mainstream aviation transparent parts and aircraft cockpit skylight frames, namely pressure plate clamping connection and bolt connection.

[0003] The specific installation form of the clamping connection of the pressure plate is as follows: the glass is installed on the cockpit skylight frame, the outer pressure plate presses the glass on one side, and the other side is connected to the frame by bolts; the glass is clamped in the window frame of the outer pressure plate and the frame. The edge of the aviation transparent part of the pressure plate connection installation form generally adopts an edge wrapping structure, which is an organic elastic material and has a certain number of sealing teeth, which can realize the sealing function after installation.

[0004] The bolt connection installation form is as follows: the windshield is installed on the cockpit skylight frame, and there are a certain number of bolt holes around the windshield, which are directly connected to the skylight frame by bolts. The bolt connection structure requires that the windshield is directly connected to the skylight frame by bolts, and the shape and position tolerances of the matching holes of the windshield and the skylight frame are high. The edge structure around the windshield is also relatively complex, but it can achieve weight reduction of the skylight frame.

[0005] At present, the main characteristics of aircraft windshields are large size, large curvature, and very strict weight requirements, so they need to be designed to be very thin. The windshield has high impact resistance requirements and needs to be able to withstand aerodynamic loads and bird strikes during flight; when hit by a bird during flight, the glass cannot be penetrated and there must be no splashes on the back of the glass to cause damage to the pilot and cabin facilities; in addition, the aircraft windshield needs to be able to break safely, that is, when any layer of glass is broken, the aircraft can ensure airtightness and land safely. Therefore, the above problems need to be solved urgently. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide an aircraft windshield with a double-row bolt structure having an anti-splash function, which combines the advantages of a pressure plate connection installation form and a bolt connection installation form, is simple and convenient to install and disassemble, and reduces costs.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model is a double-row bolt structure aircraft windshield with anti-splash function, and its innovation lies in: comprising outer layer glass, middle layer glass, inner layer glass, upper frame, middle frame, lower frame and aluminum pressure ring; the outer layer glass, middle layer glass and inner layer glass are arranged in sequence from top to bottom, and the outer layer glass is bonded to the middle layer glass through an outer layer film, and the middle layer glass is bonded to the inner layer glass through an inner layer film; the upper frame is bonded to the middle layer glass through a first sealant The upper frame and the middle frame are bonded to the end of the inner glass by the first sealant; thin inserts are respectively adhered to the upper and lower sides of the upper frame and the middle frame, and each of the thin inserts extends to the edge of the middle glass and the outer glass; the aluminum pressure ring is installed on the upper surface of the upper frame by the waterproof sealant, and is surrounded and extends to the end of the outer glass; the lower frame is bonded to the lower surface of the middle frame by the first sealant, and extends to the edge of the inner glass; a splash-proof film layer is arranged on the lower surface of the inner glass.

[0008] Preferably, the outer layer of glass and the middle layer of glass are arranged in a step shape, and the outer layer of glass is located at the center of the middle layer of glass; the overall area of ​​the outer layer of film and the inner layer of film are larger than that of the middle layer of glass and the inner layer of glass.

[0009] Preferably, an anti-fog coating is also provided on the surface of the anti-splash film layer, thereby achieving an anti-fog function through the anti-fog coating.

[0010] Preferably, the upper frame matches the middle glass, and the middle frame matches the inner glass, and ensures that the outer side surfaces of the upper frame, the middle frame and the lower frame are aligned and flush; the first sealant of each layer is filled to the ends of the middle glass and the inner glass, and then the frame protection is completed by the upper frame and the middle frame.

[0011] Preferably, the waterproof sealant is made of waterproof polysulfide glue, and it is filled to the outer surface edge of the outer glass, and a Z-shaped pressure plate is embedded in the waterproof sealant, thereby enhancing the structural rigidity of the waterproof sealant through the Z-shaped pressure plate; one end of the Z-shaped pressure plate is located at the upper end of the edge of the outer glass, and the other end is located at the lower end of the aluminum pressure ring, and they are respectively connected to the upper surface of the outer glass and the lower surface of the aluminum pressure ring through conductive glue, and a layer of conductive film is plated on the upper surface of the outer glass, and the conductive film is electrically connected to the conductive glue, thereby connecting the outer glass to the Z-shaped pressure plate and the aluminum pressure ring for grounding to prevent static electricity.

[0012] Preferably, each of the thin inserts is made of an epoxy resin glass fiber reinforced plastic sheet or a carbon fiber sheet with a thickness of 0.8-1.2 mm.

[0013] Preferably, the extension distance of each thin insert must be ensured to at least extend to the lower side of the edge of the outer glass.

[0014] Preferably, an outer circle bolt hole and an inner circle bolt hole are respectively opened on the aluminum pressure ring, and the aluminum pressure ring is bolted to the aircraft window frame structure through the outer circle bolt hole; the inner circle bolt hole passes through the waterproof sealant, the upper frame, the middle frame and the lower frame from top to bottom in sequence, and matches with the fastening bolts, and is also matched with a bushing therein, and then the various components are fastened together through the cooperation of the fastening bolts, the bushing and the inner circle bolt hole.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model combines the advantages of the pressure plate connection installation form and the bolt connection installation form, and is easy to install and disassemble, and reduces costs;

[0017] (2) The utility model provides an anti-splash film layer, which can not only protect the inner surface of the windshield from external scratches, but also prevent the glass from being broken and splashed when the windshield is damaged by external impact loads, such as bullets, fragments, bird strikes, hail, etc.;

[0018] (3) The utility model enhances the structural rigidity of the waterproof sealant by providing a Z-shaped pressure plate, improves the sealing and waterproof performance, protects the edge of the glass, and prevents wind and sand from eroding the sealant;

[0019] (4) The conductive adhesive of the utility model connects the outer glass with the Z-shaped pressure plate and the aluminum pressure ring to the ground to prevent static electricity;

[0020] (5) The utility model enhances the edge rigidity of the windshield by providing a thin insert, and the thin insert and the glass are bonded together to improve the overall load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The utility model is a structural schematic diagram of an aircraft windshield with a double-row bolt structure having an anti-splashing function.

[0023] Figure 2 It is a schematic diagram of the use state of the utility model.

[0024] Among them, 1-outer glass; 2-outer film; 3-middle glass; 4-inner film; 5-inner glass; 6-upper frame; 7-middle frame; 8-thin insert; 9-lower frame; 10-aluminum pressure ring; 11-waterproof sealant; 12-Z-type pressure plate; 13-conductive glue; 14-fastening bolts; 15-anti-splash film layer; 16-anti-fog coating; 17-aircraft window frame structure. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0026] The utility model discloses a double-row bolt structure aircraft windshield with splash-proof function, comprising an outer layer of glass 1, a middle layer of glass 3, an inner layer of glass 5, an upper frame 6, a middle frame 7, a lower frame 9 and an aluminum pressure ring 10; the specific structure is as follows Figure 1 As shown, the outer glass 1, the middle glass 3 and the inner glass 5 are arranged in sequence from top to bottom, and the outer glass 1 is bonded to the middle glass 3 through the outer film 2, and the middle glass 3 is bonded to the inner glass 5 through the inner film 4; the outer glass 1 and the middle glass 3 are arranged in a step-like manner, and the outer glass 1 is located in the center of the middle glass 3; the overall area of ​​the outer film 2 and the inner film 4 are larger than the middle glass 3 and the inner glass 5. The utility model adopts three layers of inorganic glass with two intermediate organic film layers to achieve bonding, and is formed by high temperature and high pressure composite molding, with high strength, high stability and strong product reliability.

[0027] like Figure 1 As shown, the upper frame 6 is bonded to the end of the middle glass 3 by the first sealant, and the middle frame 7 is bonded to the end of the inner glass 5 by the first sealant; the upper frame 6 matches the middle glass 3, and the middle frame 7 matches the inner glass 5, and ensures that the outer sides of the upper frame 6, the middle frame 7 and the lower frame 9 are aligned and flush; the first sealant of each layer is filled to the ends of the middle glass 3 and the inner glass 5, and then the frame protection is completed by the upper frame 6 and the middle frame 7. The upper frame 6 and the middle frame 7 of the utility model are both composite frames, thereby achieving the purpose of weight reduction.

[0028] The utility model further adheres thin inserts 8 to the upper and lower sides of the upper frame 6 and the middle frame 7, respectively, and each thin insert 8 extends to the edge of the middle glass 3 and the outer glass 1; each thin insert 8 is made of an epoxy resin glass fiber reinforced plastic sheet or a carbon fiber sheet with a thickness of 0.8-1.2 mm, and the extension distance of each thin insert 8 must be ensured to at least extend to the lower side of the edge of the outer glass 1; the utility model can increase the rigidity of the aircraft windshield by arranging the thin insert 8, and at the same time improve its overall bearing capacity.

[0029] The aluminum pressure ring 10 of the utility model is installed on the upper surface of the upper frame 6 through the waterproof sealant 11, and is arranged around and extends to the end of the outer glass 1; Figure 1 As shown, the waterproof sealant 11 is made of waterproof polysulfide glue, and it is filled to the outer surface edge of the outer glass 1, and a Z-shaped pressing plate 12 is embedded in the waterproof sealant 11, and the structural rigidity of the waterproof sealant 11 is enhanced by the Z-shaped pressing plate 12; one end of the Z-shaped pressing plate 12 is located at the upper end of the edge of the outer glass 1, and the other end is located at the lower end of the aluminum pressing ring 10, and is respectively connected to the upper surface of the outer glass 1 and the lower surface of the aluminum pressing ring 10 through the conductive glue 13, and a layer of conductive film is plated on the upper surface of the outer glass 1, and the conductive film is electrically connected and overlapped with the conductive glue 13, so that the outer glass 1 is connected to the Z-shaped pressing plate 12 and the aluminum pressing ring 10 for grounding to prevent static electricity.

[0030] like Figure 1 As shown, the lower frame 9 is bonded to the lower surface of the middle frame 7 by a first sealant and extends to the edge of the inner glass 5; an anti-splash film layer 15 is provided on the lower surface of the inner glass 5, and an anti-fog coating layer 16 is also provided on the surface of the anti-splash film layer 15, thereby achieving an anti-fog function through the anti-fog coating layer 16. The lower frame 9 of the utility model is made of metal material to increase the supporting strength.

[0031] like Figure 1 , Figure 2 As shown, an outer circle bolt hole and an inner circle bolt hole are respectively opened on the aluminum pressure ring 10, and the aluminum pressure ring 10 is bolted to the aircraft window frame structure 17 through the outer circle bolt hole; the inner circle bolt hole passes through the waterproof sealant 11, the upper frame 6, the middle frame 7 and the lower frame 9 from top to bottom, and is matched with the fastening bolt 14, and a bushing is also provided therein, and then the various components are fastened together through the cooperation of the fastening bolt 14, the bushing and the inner circle bolt hole.

[0032] Beneficial effects of the utility model:

[0033] (1) The utility model combines the advantages of the pressure plate connection installation form and the bolt connection installation form, and is easy to install and disassemble, and reduces costs;

[0034] (2) The utility model provides the anti-splash film layer 15, which can not only protect the inner surface of the windshield from external scratches, but also prevent the glass from being broken and splashed when the windshield is damaged by external impact loads, such as bullets, fragments, bird strikes, hail, etc.;

[0035] (3) The utility model provides a Z-shaped pressure plate 12, thereby enhancing the structural rigidity of the waterproof sealant 11, improving the sealing and waterproof performance, protecting the edge of the glass, and preventing wind and sand from eroding the sealant;

[0036] (4) The conductive adhesive 13 of the utility model connects the outer glass 1 with the Z-shaped pressing plate 12 and the aluminum pressing ring 10 for grounding to prevent static electricity;

[0037] (5) The utility model enhances the edge rigidity of the windshield by providing the thin insert 8. Meanwhile, the thin insert 8 and the glass are bonded together to improve the overall bearing capacity.

[0038] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. An aircraft windshield with a double-row bolt structure and splash-proof function, characterized in that: The invention comprises an outer layer of glass, a middle layer of glass, an inner layer of glass, an upper frame, a middle frame, a lower frame and an aluminum pressure ring; the outer layer of glass, the middle layer of glass and the inner layer of glass are arranged in sequence from top to bottom, and the outer layer of glass is bonded to the middle layer of glass through an outer layer of film, and the middle layer of glass is bonded to the inner layer of glass through an inner layer of film; the upper frame is bonded to surround the end of the middle layer of glass through a first sealant, and the middle frame is bonded to surround the end of the inner layer of glass through a first sealant; thin inserts are respectively adhered to the upper and lower sides of the upper frame and the middle frame, and each of the thin inserts extends to the edge of the middle glass and the outer glass; the aluminum pressure ring is installed on the upper surface of the upper frame through a waterproof sealant, and surrounds the end extending to the outer layer of glass; the lower frame is bonded to the lower surface of the middle frame through a first sealant, and extends to the edge of the inner glass; a splash-proof film layer is arranged on the lower surface of the inner glass.

2. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: The outer layer of glass and the middle layer of glass are arranged in a step shape, and the outer layer of glass is located at the center of the middle layer of glass; the overall area of ​​the outer layer of film and the inner layer of film are larger than that of the middle layer of glass and the inner layer of glass.

3. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: A layer of anti-fog coating is also arranged on the surface of the anti-splash film layer, and the anti-fog function is achieved through the anti-fog coating.

4. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: The upper frame matches the middle glass, and the middle frame matches the inner glass, and ensures that the outer side surfaces of the upper frame, the middle frame and the lower frame are aligned and flush; the first sealant of each layer is filled to the ends of the middle glass and the inner glass, and then the frame protection is completed by the upper frame and the middle frame.

5. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: The waterproof sealant is made of waterproof polysulfide glue, and it is filled to the outer surface edge of the outer glass, and a Z-shaped pressing plate is embedded in the waterproof sealant, so that the structural rigidity of the waterproof sealant is enhanced by the Z-shaped pressing plate; one end of the Z-shaped pressing plate is located at the upper end of the edge of the outer glass, and the other end is located at the lower end of the aluminum pressure ring, and they are respectively connected to the upper surface of the outer glass and the lower surface of the aluminum pressure ring through conductive glue, and a layer of conductive film is plated on the upper surface of the outer glass, and the conductive film is electrically connected and overlapped with the conductive glue, so that the outer glass is connected to the Z-shaped pressing plate and the aluminum pressure ring for grounding to prevent static electricity.

6. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: Each of the thin inserts is made of epoxy resin glass fiber reinforced plastic sheet or carbon fiber sheet with a thickness of 0.8-1.2 mm.

7. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: The extension distance of each thin insert must be ensured to at least extend to the lower side of the edge of the outer glass.

8. The double-row bolt structure aircraft windshield with splash-proof function according to claim 1, characterized in that: An outer circle bolt hole and an inner circle bolt hole are respectively opened on the aluminum pressure ring, and the aluminum pressure ring is bolted to the aircraft window frame structure through the outer circle bolt hole; the inner circle bolt hole passes through the waterproof sealant, the upper frame, the middle frame and the lower frame from top to bottom in sequence, and is matched with the fastening bolts, and a bushing is also provided therein, and then the various components are fastened together through the cooperation of the fastening bolts, the bushing and the inner circle bolt hole.

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