Elevator cab structure

Claim 2

A cab structure for an elevator car having a supporting floor portion, said cab structure including a ceiling portion and a wall portion, said ceiling portion being supported by said wall portion, said wall portion being supported on said floor portion, said wall portion including a rear wall, a front wall and a pair of sidewalls, wherein each said rear wall and pair of sidewalls comprises, a rigid frame structure mounted on said floor portion and having an opening extending therethrough, a wall panel assembly mounted on said rigid frame structure and arranged to close said opening, and spring means connected to said wall panel assembly for urging said wall panel assembly against said rigid frame structure, and wherein said rigid frame structure has a substantially flat inner surface, and said wall panel assembly has a substantially flat outer surface, and said spring means is adapted to urge said wall panel outer surface in bearing against said rigid frame inner surface.

Claim 3

A cab structure as claimed in claim 1, wherein said rigid frame structure comprises, an upper beam removably connected to said ceiling portion, a lower beam for connection to said floor portion, a pair of horizontally spaced end columns, each said end column being rigidly connected to said upper beam and said lower beam.

Claim 4

A cab structure as claimed in claim 2, wherein said rigid frame structure has an intermediate column disposed between said end columns forming a pair of openings, and wherein said wall panel assembly includes a pair of wall panels respectively closing said openings.

Claim 5

A cab structure as claimed in claim 3, wherein said beams and columns have respective inner surfaces, said inner surfaces being substantially flat and coplanar for forming said substantially flat inner surface of said rigid frame structure.

Claim 6

A cab structure as claimed in claim 4, wherein each said panel has a peripheral portion and a center portion, said peripheral portion having a substantially flat outer surface for bearing against said frame inner surface, said center portion being surrounded by said peripheral portion, said center portion having an outer layer, said outer layer being composed of a fireproof material.

Claim 7

A cab structure as claimed in claim 5, wherein each said rear wall end column has a plurality of fasteners removably connected to the sidewall end column adjacent thereto.

Claim 8

A cab structure as claimed in claim 2, wherein said spring means includes a plurality of spring members, each said spring member being received in an aperture portion in said frame structure, each said spring member having a fixed portion and a resilient portion, said fixed portion being fixedly connected to said wall panel outer surface, said resilient portion being arranged to extend through said aperture portion and to overlap said frame at the outer surface of the edge of the aperture portion for applying a bearing force thereto.

Claim 9

A cab structure as claimed in claim 7, wherein said frame lower beam has a projecting portion, said projecting portion being disposed below said panel assembly and being arranged to bear against said panel assembly at the lower edge thereof.

Claim 10

A cab structure as claimed in claim 2, wherein said front wall has a door opening and a sliding door for said door opening, said front wall including, an operating return portion disposed on one side of said opening, a fixed return portIon disposed on the other side of said opening, and an elongate lintel member disposed above said opening and said return portions, wherein said lintel member has opposite end portions, each said lintel end portion being rigidly connected to the sidewall rigid frame structure disposed adjacent thereto, and said lintel member has a track and header portion extending therefrom for supporting said sliding door.

Claim 11

A cab structure as claimed in claim 9, wherein said operating return portion includes an exterior wallplate and an interior wallplate, said exterior wallplate being arranged for mounting on said floor portion, said interior wallplate having hinge means and being movable relative to said exterior wallplate forming an interior wallplate door, said exterior wallplate and said interior wallplate door being spaced apart to form a conduit therebetween for housing control wiring, said interior wallplate door having a plurality of control elements mounted thereon.

Claim 12

A cab structure as claimed in claim 9, wherein said ceiling portion includes a plurality of structural plates removably connected to said rear and sidewall upper beams and to said front wall lintel member and includes a plurality of suspended ceiling units suspended from and spaced below said structural plates, said suspended ceiling units including a plurality of lighting devices mounted thereon and disposed between said structural plates and said suspended ceiling units.

Claim 13

A cab structure as claimed in claim 6, wherein said spring means includes a plurality of spring members, each said spring member being received in an aperture portion in said frame structure, each said spring member having a fixed portion and a resilient portion, said fixed portion being fixedly connected to said panel peripheral outer face, said resilient portion being arranged to extend through said aperture portion and to overlap said frame at the outer surface of the edge of the aperture portion, and wherein said frame lower beam has a projecting portion, said projecting portion being disposed below said wall panels and being arranged to bear against said wall panels at the lower edges thereof, and wherein said wall portion includes a front wall, said front wall having a door opening and having a sliding door for said door opening, said front wall including an operating return portion and a fixed return portion disposed on opposite sides of said door opening and an elongate overhead lintel member disposed above said opening and said return portions, said lintel member having opposite end portions, each said lintel end portion being rigidly connected to the sidewall rigid frame structure adjacent thereto, and said lintel member having a track and header portion extending therefrom for supporting said sliding door, and wherein said operating return portion has an exterior wallplate arranged for mounting on said floor portion and has an interior wallplate door having hinge means connected to said exterior wallplate forming a conduit therebetween for control wiring, said interior wallplate door having a plurality of control elements mounted thereon, and wherein said ceiling portion includes a plurality of structural plates removably connected to said rear and sidewall upper beams and to said front wall lintel member and includes a plurality of suspended ceiling units suspended from and spaced below said structural plates, said ceiling units having a plurality of lighting devices mounted thereon and disposed between said structural plates and said suspended ceiling units.