Antiderailment locking device for elevator door panels

Abstract

Anti-derailment locking device for elevator door panels. The device (100) comprising of horizontal unit (1) configured at the bottom portion of the elevator door panel (f) via. fasteners or welding. A vertical unit (2) that is perpendicular to the horizontal unit (1) wherein the vertical unit (2) connects the horizontal unit (1) and a second horizontal unit (3) that is parallel to the horizontal unit (1) forming a retainer unit (110) of the derailment locking device (100). Two bend reliefs (4) configured on either side of the retainer unit (110) wherein the bend reliefs (4) have a plurality of holes to configure the derailment locking device (100) at the bottom portion of the elevator door panel. The derailment locking device (100) gets locked at the sill portion (D) thereby preventing the derailment of the elevator doors due to any external impact or force on the elevator door panel (f).

Description

[0001] DESCRIPTION

[0002] ANTIDERAILMENT LOCKING DEVICE FOR ELEVATOR DOOR PANELS

[0003] TECHNICAL FIELD

[0004] 001. 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 impact prevention retainer / gigs for elevators and lifts. The present invention particularly relates to an anti-derailment locking device for elevator door panels for impact prevention or breakaway.

[0005] BACKGROUND OF THE INVENTION

[0006] 002. In modem 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.

[0007] 003. 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 door mechanisms require to be installed with safety mechanism to ensure derailment or breakaway from the guide rails upon applying external force or due to abrasion of the door shoes, which are typically made of synthetic resin, such as rubber material. The technical standards, including but not limited to the International Standards, IS 14665 and IS 17900 (to be implemented) prescribe the safety requirements for the elevator doors, including the standards required for withstanding derailment or breakaway from the guide rails upon applying external force or due to abrasion of the door shoes. 004. In one embodiment of prior art, KR20120049740 A teaches a separation preventing device of a platform door of an elevator is provided to stably open and close a platform door and to prevent crashes because the lower part of the platform door is not separated from a guide groove of a guide rail in spite of pressure or impact.

[0008] 005. In another embodiment of prior art, CN107522074A teaches a kind of elevator protecting against shock comes off, including door head plate, hanging plate, hall door and sill, being horizontally disposed with the door head plate has line slide rail, the left side and right side of hanging plate are provided with the outside of pulley and pulley and are provided with upper limit position block and lower position block, hanging plate is slidably mounted on line slideway by pulley, sill is internally provided with sill chute, hall door bottom is fixed with sliding block, half open form stop hook is provided with sill chute, sliding block is flexibly connected by packing ring with half open form stop hook, hall door is slidably mounted in sill chute by the cooperation of sliding block and half open form stop hook, the centre of sill is provided with fixed block, the both sides of fixed block are provided with sill hook, the sidepiece of sliding block is provided with the sliding block hook being engaged with sill hook.

[0009] 006. In the state-of-the-art inventions, several other anti-derailment devices and systems enabling the elevator doors to withstand the derailment or breakaway from the guide rails upon applying external force or due to abrasion of the door shoes. However, the prior art anti-derailment locking devices are unable to provide an efficient load bearing solution for elevator doors to withstand the external force or prevent derailment or breakaway from the guide rails upon applying external force or due to abrasion of the door shoes.

[0010] 007. Based on the foregoing a need therefore exists for an improved antiderailment locking device for elevator door panels for impact prevention or breakaway, as discussed in greater detail herein.

[0011] SUMMARY OF THE INVENTION

[0012] 008. 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.

[0013] 009. It is, therefore, one aspect of the disclosed embodiments to provide for an improved anti-derailing mechanism for elevator doors. 010. It is another aspect of the disclosed embodiments to provide for improved panel retainer device for prevention of breakaway upon application of force on the elevator doors, specifically complying with the IS 14665 and IS 17900 standards.

[0014] Oil. It is further aspect of the disclosed embodiments to provide improved antiderailment locking device for elevator door panels for impact prevention or breakaway.

[0015] 012. Anti-derailment locking device for elevator door panels. The antiderailment locking device (100) comprising of a horizontal unit (1) configured at the bottom portion of the elevator door panel (f) via. fasteners or welding. A vertical unit (2) that is perpendicular to the horizontal unit (1) wherein the vertical unit (2) connects the horizontal unit (1) and a second horizontal unit (3) that is parallel to the horizontal unit (1) forming a retainer unit (110) of the derailment locking device (100). Two bend reliefs (4) configured on either side of the retainer unit (110) wherein the bend reliefs (4) have a plurality of holes to configure the derailment locking device (100) at the bottom portion of the elevator door panel via. fasteners or welding. The derailment locking device (100) gets locked at the sill portion (D) thereby preventing the derailment of the elevator doors due to any external impact or force on the elevator door panel (f).

[0016] 013. The bend portions (a) and (b) formed on the retainer unit (110) at the intersections of the horizontal unit (1) and vertical unit (2) and at the intersections of the vertical unit (2) and the second horizontal unit (3) can be perpendicular, acute or obtuse angle forming the shape of the retainer unit (110). In one embodiment of the present invention, the anti-derailment locking device (100) comprises of a perpendicular bend (5) at the opposite end of bend relief for side fixing at the bottom of the base panel of the elevator door (f). In an additional embodiment of the present invention, the vertical unit (2) comprises of additional plates (6a and 6b) on both sides of the vertical unit (2) to eliminate the need of second horizontal unit (3) providing improved sill clearance. The proposed antiderailment locking device (100) should to be constituted to be implemented on any specific elevator door mechanisms, the proposed locking device (100) can be implemented on a wide range of elevator door mechanisms, constituting, but not limited to, centre opening or telescoping opening of door panels.

[0017] BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 014. FIG. 1 and FIG. 2 illustrates side view of the anti-derailment locking device (100) comprising of parts a horizontal unit (1), a vertical unit (2), a second horizontal unit (3) and two bend reliefs (4), in accordance with the disclosed embodiments.

[0019] 015. FIG. 3 illustrates side of the anti-derailment locking device (100) operatively configured onto the elevator door mechanism (f) where the retainer unit (110) is positioned at the sill (d), in accordance with the disclosed embodiments. 016. FIG. 4 illustrates another embodiment of the anti-derailment locking device (100) comprising of plates (6a and 6b), in accordance with the disclosed embodiments.

[0020] 017. FIG. 5 illustrates another embodiment of the anti-derailment locking device (100) comprising of plates (6a and 6b) operatively configured onto the elevator door mechanism (f) where the retainer unit (110) is positioned at the sill (d), in accordance with the disclosed embodiments.

[0021] DETAILED DESCRIPTION

[0022] 018. 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.

[0023] 019. Invention: Anti-derailment locking device for elevator door panels is disclosed herein wherein the device (100) is preventing derailment of door panel during any external impact / force acts on the door panel from the open sill thereby preventing damage or injury or a chance to fall into the hoist way or elevator shaft.

[0024] 020. The anti-derailment locking device (100) comprising of a horizontal unit (1) configured at the bottom portion of the elevator door panel (f) via. fasteners or welding. A vertical unit (2) that is perpendicular to the horizontal unit (1) wherein the vertical unit (2) connects the horizontal unit (1) and a second horizontal unit (3) that is parallel to the horizontal unit (1) forming a retainer unit (110) of the derailment locking device (100). Two bend reliefs (4) configured on either side of the retainer unit (110) wherein the bend reliefs (4) have a plurality of holes to configure the derailment locking device (100) at the bottom portion of the elevator door panel via. fasteners or welding. The derailment locking device (100) gets locked at the sill portion (D) thereby preventing the derailment of the elevator doors due to any external impact or force on the elevator door panel (f). 021. The bend portions (a) and (b) formed on the retainer unit (110) at the intersections of the horizontal unit (1) and vertical unit (2) and at the intersections of the vertical unit (2) and the second horizontal unit (3) can be perpendicular, acute or obtuse angle forming the shape of the retainer unit (110). In one embodiment of the present invention, the anti-derailment locking device (100) comprises of a perpendicular bend (5) at the opposite end of bend relief for side fixing at the bottom of the base panel of the elevator door (f). In an additional embodiment of the present invention, the vertical unit (2) comprises of additional plates (6a and 6b) on both sides of the vertical unit (2) to eliminate the need of second horizontal unit providing improved sill clearance. The proposed antiderailment locking device (100) should to be constituted to be implemented on any specific elevator door mechanisms, the proposed locking device (100) can be implemented on a wide range of elevator door mechanisms, constituting, but not limited to, centre opening or telescoping opening of door panels.

[0025] 022. Method of construction: A blank is cut on the sheet metal using turret punching or laser cutting or tooling, following which a first perpendicular bend at the open end of the blank using traditional bending machine or tooling which is shorter in order to accommodate in the dimension of sill groove is created.

[0026] Another perpendicular bend is made in between two bend relief. The holes for fastening or welding the retainer with door panel is also made on two bend relief during punching. Further, the device is powder coated and spray painted with Cataphoresis for preventing rust formation on the metal.

[0027] 023. In an alternative embodiment, a blank is cut on the sheet metal using turret punching or laser cutting or tooling wherein a first perpendicular bend at the open end of blank is created using traditional bending machine or tooling which is shorter in order to accommodate in the dimension of sill groove. Another perpendicular bend is made in between two bend relief and another perpendicular bend at the opposite end of bend relief for side fixing of retainer at the bottom end of base panel. The holes on both bend relief and opposite end of bend relief are created for fastening or welding the retainer with door panel is also made on two bend relief during punching.

[0028] 024. Use of the Invention: The anti-derailment locking device (100) can be used for any of standard door, vision (either of half vision or full vision) doors. The device (100) can be configured on a wide range of elevator doors (f) of different size, dimensions and applications. The device (100) can be additionally retrofitted or ad-hoc installed on any kind of existing elevator door systems. It is to be noted that the proposed device (100) doesn’t need any sill with specialized designs also doesn’t require any modification which makes it a universal solution for elevator doors systems with improved safety, interoperability and compatibility of different door types and models.

[0029] 025. 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

CLAIMSI / WE CLAIM1. An anti-derailment locking device for elevator door panels, comprising: a horizontal unit (1) configured at the bottom portion of the elevator door panel (f) via. fasteners or welding; a vertical unit (2) that is perpendicular to the horizontal unit (1) wherein the vertical unit (2) connects the horizontal unit (1); a second horizontal unit (3) that is parallel to the horizontal unit (1) forming a retainer unit (110) of the derailment locking device (100); andTwo bend reliefs (4) configured on either side of the retainer unit (110) wherein the bend reliefs (4) have a plurality of holes to configure the derailment locking device (100) at the bottom portion of the elevator door panel via. fasteners or welding.

2. The device as claimed in claim 1 wherein the derailment locking device (100) gets locked at the sill portion (D) thereby preventing the derailment of the elevator doors due to any external impact or force on the elevator door panel (f).

3. The device as claimed in claim 1 wherein the bend portions (a) and (b) formed on the retainer unit (110) at the intersections of the horizontal unit (1) and vertical unit (2) and at the intersections of the vertical unit (2) and the second horizontal unit (3) can be of perpendicular, acute or obtuse angle forming the shape of the retainer unit (110).

4. The device as claimed in claim 1 wherein the anti-derailment locking device (100) comprises of a perpendicular bend (5) at the opposite end of bend relief for side fixing at the bottom of the base panel of the elevator door (f).

5. The device as claimed in claim 1 wherein the vertical unit (2) comprises of additional plates (6a and 6b) on both sides of the vertical unit (2) to eliminate the need of second horizontal unit (3) providing improved sill clearance.

6. The device as claimed in claim 1 wherein the anti-derailment locking device (100) can be configured on elevator doors (f) of different size, dimensions and applications.

7. The device as claimed in claim 1 wherein the anti-derailment locking device (100) can be additionally retrofitted or ad-hoc installed on any kind of existing elevator door systems.

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