Insulated landing door of an elevator

Abstract

The object of the invention is an insulated landing door of an elevator, which door comprises at least one door panel that opens and closes in the lateral direction and is provided with a glass surface plate, which door panel comprises a frame structure supporting the door panel and an edge beading on the front edge of the door panel and an insulation element. The insulation element is composed of one or more glass plates, and that there is an air gap between the glass surface plate and the glass insulation element.

Claims

1. A insulated landing door of an elevator, the insulating landing door comprising: at least a first door panel configured to open and close in a lateral direction, the lateral direction perpendicular to a movement direction of the elevator, and the first door panel having a floor level side facing a floor and a hoistway side facing a hoistway, the first door panel including, a glass surface plate, a frame structure surrounding an edge the glass surface plate and supporting the first door panel, edge beading extending continuously along an edge of the first door panel from a top of the first door panel to a bottom of the first door panel, the edge beading being attached to the frame structure on the floor level side of the first door panel and wrapping around the edge of the first door panel such that the edge beading is configured to overlap with edge beading of a second door panel configured to move in a direction opposite to the first door panel, and a glass insulation element including at least one glass plate, the glass insulation element spaced apart from the glass surface plate by an air gap between the glass surface plate and the glass insulation element, the air gap defined by an insert between the glass insulation element and the glass surface plate, the glass insulation element and the insert being pressed against each other by a fastener and the frame structure.

2. The insulated landing door according to claim 1, wherein the edge beading wraps around the edge of the first door panel such that a surface of the edge beading and a surface of the glass surface plate lie on a same plane in the lateral direction, and, along the edge of the first door panel, the edge beading is divided into a first portion and a second portion each extending different lengths from the edge of the first door panel in the lateral direction such that the edge beading is configured to overlap with edge beading of a second door panel configured to move in a direction opposite to the first door panel.

3. The insulated landing door according to claim 1, wherein the glass insulation element includes a plurality of glass plates.

4. The insulated landing door according to claim 3, wherein the plurality of glass plates are laminated to each other.

5. The insulated landing door according to claim 1, wherein a thickness of the insert and a thickness of the glass surface plate are configured such that a surface of the glass surface plate and a surface of the edge beading are on a same plane on the floor level side of the first door panel.

6. The insulated landing door according to claim 1, wherein: the insert has a ring structure; a first side surface of the insert is fixed to a surface of the glass insulation element facing the floor level side of the first door panel; and a second side surface of the insert is fixed to a surface of the glass surface plate facing an elevator car side of the first door panel.

7. The insulated landing door according to claim 1, further comprising: at least one other glass plate between an outer surface of the insert and an inside surface of the glass surface plate; wherein an outer surface of the glass insulation element is fixed to an inside surface of the insert, the outer surface of the insert faces the floor level side of the first door panel, the inside surface of the glass surface plate faces an elevator car side of the first door panel, the outer surface of the glass insulation element faces the floor level side of the first door panel, and the inside surface of the insert faces the elevator car side of the first door panel.

8. The insulated landing door according to claim 7, wherein the at least one other glass plate, the glass insulation element and the insert are pressed against each other by a fastener and the frame structure.

9. The insulated landing door according to claim 8, wherein the fastener is a combination of screws and nuts.

10. The insulated landing door according to claim 7, wherein the first door panel comprises: at least a first seal between an outer surface of the at least one other glass plate and an inside surface of the frame structure, the outer surface of the at least one other glass plate facing the floor level side, and the inside surface of the frame structure facing the elevator car side; and at least a second seal between an inside surface of the frame structure and the outer surface of the glass insulation element, the inside surface of the frame structure facing the floor level side.

11. The insulated landing door according to claim 1, wherein the first door panel comprises: at least a first seal between an outer surface of the insert and an inside surface of the frame structure, the outer surface of the insert facing the floor level side, and the inside surface of the frame structure facing an elevator car side of the first door panel; and at least a second seal between an inside surface of the frame structure and an outer surface of the glass insulation element, the inside surface of the frame structure facing the floor level side, and the outer surface of the glass insulation element facing the elevator car side.

12. The insulated landing door according to claim 1, wherein the fastener is a combination of screws and nuts.

Description

(1) In the following the invention will be described in more detail by the aid of some examples of its embodiment with reference to the attached simplified drawings, wherein

(2) FIG. 1 presents an oblique top view from the front of one landing door of an elevator at the floor level,

(3) FIG. 2 presents a simplified and sectioned top view of one preferred structure of a landing door of an elevator,

(4) FIG. 3 presents a simplified, sectioned and magnified view of an edge structure of the landing door of an elevator according to FIG. 2,

(5) FIG. 4 presents a simplified and sectioned top view of one second preferred structure of a landing door of an elevator,

(6) FIG. 5 presents a simplified, sectioned and magnified view of an edge structure of the landing door of an elevator according to FIG. 4, and

(7) FIG. 6 presents a simplified and partially sectioned front view of a structure of a landing door of an elevator.

(8) The insulated landing door of an elevator according to FIG. 1 comprises two door panels 1 moving reciprocally on their own plane, which door panels are provided on their outer surface on the floor level side with surface glass 2 of almost the size of the door panel 1. The front edge of each door panel 1 comprises edge beading 6 of essentially the height of the door panel 1, which beading is configured to overlap with the edge beading 6 of the door panel moving in the opposite direction. The doorway is edged e.g. with a metallic cover plate 4 on the sides of the doorway and with a metallic cover plate 5 on the top edge of the doorway such that the doorway blends into the wall 3 of the floor level in the desired manner.

(9) FIGS. 2 and 3 present simplified and sectioned views of one structure of a door panel 1 of a landing door of an elevator according to the invention, as viewed from above. The door panel 1 comprises at least a frame structure 7, surface glass 2, an insert 10, an air gap 12 and also an insulation element 11 of laminated glass, which functions as fire glass. The air gap 12 functions as a noise break and thermal break, and thus for its part improves the insulation properties of the door structure. The frame structure 7 is composed of at least e.g. beams essentially U-shaped in their cross-sectional shape, which are configured to form an unbroken, ring-like frame structure, which passes around the whole door panel 1 at the top, the sides and the bottom. The edge beading 6 on the front edge of the door panel 1 is fixed to one vertical beam of the frame structure 7 such that the edge beading 6 covers the vertical beam inside it.

(10) On the inside surface of the door panel 1 an insulation element 11 is fitted inside the frame structure 7, which insulation element is composed of e.g. one or more glass plates. When there are more glass plates than one, e.g. two, three or four, the glass plates one above the other are laminated to each other into a single laminated glass stack. Between the insulation element 11 and the surface glass 2 is an air gap 12, in which is air or another suitable gas. There can also be overpressure or underpressure in the air gap 12. The air gap 12 is formed by the aid of an insert 10, which is e.g. a ring-like structure, which passes around the inside of the frame structure 7 at the top part, sides and bottom part of the door panel 1. The insert 10 comprises e.g. a thin-walled rectangular tube or solid structure, having a thickness allowing the magnitude of the air gap 12 to be that desired. The insert 10 is fixed at one of its side surfaces e.g. with glue to the outer surface of the insulation element 11 and further at another of its side surfaces e.g. with glue to the inside surface of the surface glass 2. In this description, the outer surface means the surface on the side of the floor level and the inside surface means the surface on the side of the elevator car. The insulation element 11 and the insert 10 are additionally pressed against each other by the aid of tightening means 8 and 9, such as screws and nuts, and also by the aid of the frame structure 7.

(11) FIG. 3 presents a magnification of the structure of the door panel 1 according to the invention. Inside the frame structure 7 are seals 13 passing around the frame structure 7, the purpose of which seals is to prevent the access of thermal radiation, fire and combustion gases from a floor level into the elevator car and via the elevator hoistway to other floors. The seal 13 is between the outer surface of the insert 10 on the floor level side and the inside surface of the frame structure 7 and correspondingly on the elevator car side between the elevator car side surface of the insulation element 11 and the inside surface of the frame structure 7. The seal 13 is fixed into its position e.g. with glue and/or with compression by the aid of tightening means 8 and 9. When tightening the tightening means 8 and 9, the side flanges of the frame structure 7 bend towards each other pressing the seal 13, the insert 10 and the glass insulation element 11 firmly against each other inside the frame structure 7. The seal 13 is to some extent compressible. By utilizing the compressibility of the seal and the possibility of compressing the structure with tightening means, the thickness of the structure can be configured such that the surfaces towards the plane of the edge beading 6 and of the surface glass 2 of the landing door are essentially, or even precisely, on the same plane. The landing door of an elevator according to the invention is, depending on its intended use, either just thermally insulated or also fire insulated and additionally also noise insulated.

(12) The thickness of the air gap 12 and at the same time of the insert 10 and the thickness of the surface glass 2 are dimensioned and configured between themselves to be such that when the surface glass 2 is in its position on the door panel 1, the outer surface of the door panel 1 forms a uniform plane with no protruding raised edge, which might when the door panel 1 moves engage with something and injure e.g. children's fingers. In this case the outer surface of the door panel 1 is essentially smooth and the outer surface of the surface glass 2 of the door panel 1 and the outer surface of the edge beading 6 move on the same vertical plane.

(13) Between the side edge of the surface glass 2 on the side of the edge beading 6 and the inside edge of both the edge beading 6 and the frame structure 7 is an essentially vertical gap 2a, which in the finished door is preferably filled with some filler, such as silicone compound or with some corresponding compound. The filler is not presented in FIG. 3.

(14) FIGS. 4 and 5 present simplified and sectioned views of one second structure of a door panel 1 of a landing door of an elevator according to the invention, as viewed from above. In this structure the door panel 1 comprises at least a frame structure 7, surface glass 2, an insert 10, an air gap 12 and also a laminated insulation element 11, which comprises extra insulation glass 11a. The frame structure 7, surface glass 2, insert 10 and air gap 12 with filler are essentially the same as in the structure according to FIGS. 2 and 3, but the glass insulation element 11 is different. It is composed of a glass stack on the elevator car side, said stack being comprised of one or more essentially similar glass plates, like the structure according to FIGS. 2 and 3, but the insulation element 11 is divided with an air gap 12 into two parts, wherein on the second side, i.e. on the floor level side, of the air gap 12 is extra insulation glass 11a, which is glued attached at its inside surface to the outer surface of the insert 10. Correspondingly, the surface glass 2 is glued attached at its inside surface to the outer surface of the extra insulation glass 11a.

(15) The glass insulation element 11, the extra insulation glass 11a and the insert 10 are pressed against each other by the aid of tightening means 8 and 9, such as screws and nuts, and also by the aid of the frame structure 7 in the same way as in the structure according to FIGS. 2 and 3.

(16) FIG. 5 presents a magnified view of the structure of the open door panel 1 of FIG. 4. In this solution also inside the frame structure 7 are seals 13 passing around the frame structure 7, the purpose of which seals is to prevent the access of thermal radiation, fire and combustion gases from a floor level into the elevator car and via the elevator hoistway to other floors. The seal 13 is between the outer surface of the extra insulation glass 11a on the floor level side and the inside surface of the frame structure 7 and correspondingly on the elevator car side between the elevator car side surface of the glass insulation element 11 and the inside surface of the frame structure 7. The seal 13 is fixed into its position e.g. with glue and/or with compression by means of tightening means 8 and 9. When tightening the tightening means 8 and 9, the side flanges of the frame structure 7 bend towards each other pressing the seal 13, the extra insulation glass 11a, the insert 10 and the insulation element 11 firmly against each other inside the frame structure 7.

(17) The thickness of the air gap 12 and at the same time of the insert 10 and the thickness of the surface glass 2 are dimensioned and configured between themselves to be such that when the surface glass 2 is in its position on the door panel 1, the outer surface of the door panel 1 forms a uniform plane with no protruding raised edges. In this case the outer surface of the door panel 1 is essentially smooth and the outer surface of the surface glass 2 of the door panel 1 and the outer surface of the edge beading 6 move on the same vertical plane.

(18) Between the side edge of the surface glass 2 on the side of the edge beading 6 and the inside edge of both the edge beading 6 and the frame structure 7 is an essentially vertical gap 2a, which in the finished door is preferably filled with some filler, such as silicone compound or with some corresponding compound. The filler is not presented in FIG. 5.

(19) FIG. 6 presents a simplified and partially sectioned front view, truncated in the height direction, of the structure of one door panel 1 of a landing door of an elevator according to the invention. From FIG. 6 it is seen how the frame structure 7, insert 10 and seals pass around the top, sides and bottom of the whole door panel. For the sake of clarity, the insert 10 is presented as a dashed line except at the point of the partial cross-section. There are many tightening means 8 and 9 and in the necessary points in the area of essentially all the frame structure 7.

(20) The landing door of an elevator according to the invention can, if necessary, be fabricated to be however insulating as is needed and to fulfill the fire insulation standards and other standards required for different applications in different countries.

(21) It is obvious to the person skilled in the art that the invention is not limited solely to the examples described above, but that it may be varied within the scope of the claims presented below. Thus the insulation glass structures can also be different to what is presented above.