Reinforced elevator door panel with sandwiched laminated glass and method therof

Abstract

The invention proposed herein teaches an improved method for bonding sandwiched glass panel with reinforced elevator glass door with a capacity to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel.

Description

REINFORCED ELEVATOR DOOR PANEL WITH SANDWICHED LAMINATED GLASS AND METHOD THEROF

[0001] The present invention relates to elevators and lift systems for industrial and domestic purposes. The present invention further relates to door panels for elevators and lifts. The present invention additionally relates to method of bonding sandwiched laminated glass into reinforced door panel. The present invention particularly relates to reinforced elevator door panel with sandwiched laminated glass and method thereof.BACKGROUND OF THE INVENTION

[0002] In modern day buildings, both industrial and domestic buildings, elevators and lifts have become a common means of transporting people and / or things from one floor to another in the buildings. Elevators comprise of an elevator car that is installed on the hoist way inside the building vertically by a drive of the hoisting machine.

[0003] Conventional, elevator system comprises an elevator door mechanism configured at the entrance portion of the elevator car and a landing door mechanism at the landing door of the elevator system. Both the door mechanisms, elevator door and the landing door, are configured with door shoes on the guide groove of each guide rail embedded at the lower surface of the elevator car and at the floor of the landing floor of the building enabling the door to slide through for opening and closing of the elevator car and providing access to the users to enter the elevator car. Such elevator cars comprising of elevator door mechanisms, constituting, but not limited to, centre opening or telescoping opening of door panels. Such door panels generally are configured with a sandwiched laminated glass at the centre portion for visibility, light and aesthetic purposes. The sandwiched laminated glass is fixed on to the door frame using an adhesive material, such as for example, glue, tape or bond.

[0004] Conventional methods for bonding the sandwiched laminated glass with reinforced doors are well-known. In one embodiment of prior art, CN201678348U teaches a sandwich door panel of an elevator, which consists of a front wall, a rear wall and packing arranged between the front wall and the rear wall, wherein the front wall, the packing and the rear wall are respectively fixed by binding agents; the packing is an incombustible material or flame-retardant material; and meanwhile, outwards-protruded edges on the left side and the right side of the front wall are embedded into bent inner grooves on the left side and the right side of the right wall and are fixed by mechanical methods (welding, riveting and screwing). The sandwich door panel of the elevator is easy to manufacture, not only has a certain rigid requirement and safety performance, but also avoids the defect that the door panel is deformed by adopting a welding mode and is the door panel of the elevator with low cost, simple practicability, safety and reliability.

[0005] In another embodiment of prior art, CN102143903A teaches a lightweight glass plate comprising a first glass plate, a second glass plate and an intermediate layer that connects the first and the second plates together. The lightweight glass plate further comprises at least one connection element that allows the lightweight glass plate to be connected to an abutting component. The connection element is embedded into the intermediate layer in an edge area of the lightweight glass plate and the intermediate layer extends to surfaces located between the connection element and the glass plates. The lightweight glass plate is preferably used in the preparation of elevator doors and / or cabin walls. The lightweight glass plates are lightweight and can transfer large forces.

[0006] FIG. 1 illustrates a horizontal cross-sectional view of conventional prior art door panel that is well-known in the state-of-the-art. The sandwiched glass panel (1) is attached to the base panel (4) by means of adhesive tape (3). The base panel (4) fixed with the back cover (5) by means of adhesive. The back cover (5), base panel (4) and cladding (6) are attached together by means of both adhesive and fasteners. The top side of sandwiched glass (1) is attached with rubber beading (2) by means of adhesive tape (3) and the other side of rubber beading is attached to cladding (6) by means of adhesive tape (3).

[0007] FIG. 2 illustrates a vertical cross-sectional view of an exemplary embodiment of a conventional reinforced elevator door with sandwiched laminated glass. The conventional elevator door in FIG. 1 depicts the vertical cross-sectional view of conventional door panel specifically the fixation of header and sandwiched glass on both top and bottom of door panel. The top side of sandwiched glass panel (1) is attached to rubber beading (2) by means of adhesive tape (3). Further another end of rubber beading (2) is attached to the header (7) by means of adhesive tape. The header (7) and base panel (4) are welded together and on top of the base panel (4) cladding (6) is fixed by means of adhesive tape. Such a method for bonding the sandwiched glass with the door frame can only withstand the impact such as static force up to 345N [complying with the IS 14665:2001]. With the emphasis on improved safety for the passengers on an elevator, the IS 17900:2022 standards require the elevator doors to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue (9) by preventing the misalignment and disengagement of sandwiched glass (1) from the door panel.

[0008] Based on the foregoing a need therefore exists for an improved method for bonding sandwiched glass panel with reinforced elevator glass door with a capacity to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel, as discussed in greater detail herein.SUMMARY OF THE INVENTION

[0009] The following summary is provided to facilitate an understanding of some of the innovative features unique to the disclosed embodiment and is not intended to be a full description.

[0010] It is, therefore, one aspect of the disclosed embodiments to provide for an improved reinforced elevator door panel with sandwiched laminated glass.

[0011] It is another aspect of the disclosed embodiments to provide for improved method for bonding sandwiched glass panel with reinforced elevator glass door with a capacity to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel.

[0012] It is further aspect of the disclosed embodiments to provide improved reinforced elevator door panel with sandwiched laminated glass and method thereof.

[0013] Reinforced elevator door panel with sandwiched laminated glass and method thereof. Initially, the bottom end of a sandwiched glass panel (1) is attached to the base panel (4) by means of adhesive tape (3) wherein a base panel (4) serves as the purpose of holding glass and provides strengthening to the elevator door. Further, the base panel (4) is fixed to the reinforced back cover (8) by means of adhesive wherein the back cover (8) is added to provide additional reinforcement and strength the elevator door. On further, the reinforced back cover (8), base panel (4) and cladding (6) are attached together by means of both adhesive tape and fasteners. On the other side of top end of sandwiched glass panel (1) is attached to the rubber beading (2) by means of adhesive tape and other side of rubber beading (2) fixed to the cladding (6) by means of adhesive tape. The side ends of sandwiched glass door (3) are attached to the base panel (4) by means of adhesive glue (9) which is applied throughout on both sides of base panel.

[0014] The invention proposed herein teaches an improved method for bonding sandwiched glass panel with reinforced elevator glass door with a capacity to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel.BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1illustrates a horizontal cross-sectional view of conventional prior art door panel that is well-known in the state-of-the-art.

[0016] FIG. 2illustrates a vertical cross-sectional view of an exemplary embodiment of a conventional reinforced elevator door with sandwiched laminated glass.

[0017] FIG. 3illustrates a horizontal cross-sectional view of the reinforced elevator glass door panel with sandwiched laminated glass, in accordance with the disclosed embodiments.

[0018] FIG. 4illustrates a vertical cross-sectional view of the reinforced elevator glass door panel with sandwiched laminated glass, in accordance with the disclosed embodiments.

[0019] FIG. 5illustrates detailed perspective view of the elevator door panel showing the glass fixation area at the bottom end of base panel, in accordance with the disclosed embodiments.DETAILED DESCRIPTION

[0020] The values and configurations discussed in these non-limiting examples can be varied and are cited merely to illustrate at least one embodiment and are not intended to limit the scope thereof.

[0021] Invention:Reinforced elevator door panel with sandwiched laminated glass and method thereof. FIG. 3illustrates a horizontal cross-sectional view of the reinforced elevator glass door panel with sandwiched laminated glass, in accordance with the disclosed embodiments. Initially, the bottom end of a sandwiched glass panel (1) is attached to the base panel (4) by means of adhesive tape (3) wherein a base panel (4) serves as the purpose of holding glass and provides strengthening to the elevator door. Further, the base panel (4) is fixed to the reinforced back cover (8) by means of adhesive wherein the back cover (8) is added to provide additional reinforcement and strength to the elevator door. On further, the reinforced back cover (8), base panel (4) and cladding (6) are attached together by means of both adhesive tape and fasteners. On the other side of top end of sandwiched glass panel (1) is attached to the rubber beading (2) by means of adhesive tape and other side of rubber beading (2) fixed to the cladding (6) by means of adhesive tape. The side ends of sandwiched glass door (3) are attached to the base panel (4) by means of adhesive glue (9) which is applied throughout on both sides of base panel.

[0022] The invention proposed herein teaches an improved method for bonding sandwiched glass panel with reinforced elevator glass door with a capacity to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel.

[0023] Working of the invention:FIG. 4illustrates a vertical cross-sectional view of the reinforced elevator glass door panel with sandwiched laminated glass, in accordance with the disclosed embodiments. The vertical cross-sectional view of proposed door panel specifically the fixation of header and sandwiched glass on both top and bottom of door panel. The front end of sandwiched glass panel (1) is attached to the header (7) by means of adhesive tape. The bottom side of sandwiched glass panel (1) is attached to rubber beading (2) by means of adhesive tape (3). Further another end of rubber beading (2) is attached to the cladding (6) by means of adhesive tape. The header (7) and base panel (4) are welded together and on top of the header (7), cladding (6) is fixed by means of adhesive tape. The rear side of header (7) is attached to the reinforced back cover (8) by means of adhesive tape (3). The adhesive glue (9) is filled in between the top side of sandwiched glass panel (1) and header (7).

[0024] FIG. 5illustrates detailed perspective view of the elevator door panel showing the glass fixation area at the bottom end of base panel, in accordance with the disclosed embodiments. The glass locking member (10) is placed on either side from the midpoint of base panel to provide strengthening also to prevent the misalignment of sandwiched glass (1) during impact or installation. Whereas the glue (9) is applied to the remaining areas of locking member (10).

[0025] The bottom end of door connected to sill using a proprietary locking mechanism. Please note that the International Patent Application no. PCT / IB2023 / 060123 of the applicant of this patent teaches a novel sill and lock mechanism discussed herein. The sill hook is fixed in between two guide shoes of panel. During normal operation sill hook is not in contact with sill groove the only guide shoes were gliding in the sill groove during opening and closing operation of door panel. At the instance of any external force acting on the either of landing door or car door panel, the sill hook comes in contact with the sill and locked inside the sill groove, absorbs the impact and prevent the derailment of door panel from the sill groove.

[0026] Use of the Invention: The primary use of the proposed reinforced elevator door mechanism is to hold any external impact such as static force up to 1000N & shock impact up to 45kg which acts upon the door and adhesive glue (9) prevents the misalignment and disengagement of sandwiched glass (1) from the door panel as per the IS 17900:2022 standards. The reinforced back cover (8) configured on either side, top and bottom, acts as a strengthening element in order to withstand the external impact and protect the personals inside the cabin at the time of accidents.

[0027] The adhesive glue (9) which is applied throughout on both sides of base panel (4) and specific areas on both top and bottom sides of header (7), prevents permanent displacement of glass from the door at the time of hazard. The sill hook at the bottom of base panel provides additional safety to avoid derailment of door panel when an external impact applied on it.

[0028] It will be appreciated that variations of the above-disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Also, that various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.

Claims

I / We Claim:A method for obtaining a reinforced elevator door panel with sandwiched laminated glass, comprising steps of:attaching the bottom end of a sandwiched glass panel (1) to the base panel (4) by means of adhesive tape (3) wherein a base panel (4) serves as the purpose of holding glass and provides strengthening to the elevator door;fixing the base panel (4) to the reinforced back cover (8) by means of adhesive wherein the back cover (8) is added to provide additional reinforcement and strength the elevator door;attaching the reinforced back cover (8), base panel (4) and cladding (6) together by means of both adhesive tape and fasteners;attaching the rubber beading (2) on the other side of top end of sandwiched glass panel (1) by means of adhesive tape and other side of rubber beading (2) fixed to the cladding (6) by means of adhesive tape.

2. The method as claimed in claim 1 wherein the side ends of sandwiched glass door (3) attached to the base panel (4) by means of adhesive glue (9) which is applied throughout on both sides of base panel.

3. The method as claimed in claim 1 wherein the sandwiched glass panel with reinforced elevator glass door has a capacity to hold any external impact [such as static force 1000N & shock impact up to 45kg] on the door and adhesive glue by preventing the misalignment and disengagement of sandwiched glass from the door panel.

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