Elevator landing door assembly and its installation method

The invention relates to an elevator landing door assembly and a method for installing an elevator landing door. The landing door assembly comprises at least a landing door unit to be assembled to a landing door base opening having an upper edge, two side edges and a lower edge, which landing door unit comprises at least a top track and one or more door panels suspended by the top track through one or more supporting elements, and a door sill. The assembly comprises fixing elements in the landing door base opening equipped with receiving parts for fastening the landing door unit.

BACKGROUND OF THE INVENTION

The present invention relates to an elevator landing door assembly as defined in the preamble of claim1and a method for installing an elevator landing door as defined in the preamble of claim9.

In prior art solutions landing doors have been usually installed in connection with elevator installation. This has involved a lot of measuring, alignment work, boring and other manual work during the installation phase. This is very time consuming and also produces a lot of concrete dust to the elevator shaft and to all elevator spaces and components due to several boring tasks. The concrete dust may cause damages and is very difficult and slow to remove from all the contaminated places.

SUMMARY

One object of the present invention is to eliminate the drawbacks of the solutions of prior art and to achieve an elevator landing door assembly, which is easy and fast to install and where the installing does not produce harmful concrete dust that contaminates surfaces and components in the installation location and its close neighborhood. Another object of the present invention is to achieve a method for installing an elevator landing door reliably, safely and fast and without causing a contaminating concrete dust. The elevator landing door assembly according to the invention is characterized by what is presented in the characterization part of claim1. Correspondingly the method for installing an elevator landing door is characterized by what is presented in the characterization part of claim9. Other embodiments of the invention are characterized by what is presented in the other claims.

The inventive content of the application can also be defined differently than in the claims presented below. The inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes contained in the claims below may be superfluous from the point of view of separate inventive concepts. Likewise, the different details presented in connection with each embodiment can also be applied in other embodiments. In addition, it can be stated that at least some of the subordinate claims can, in at least some situations, be deemed to be inventive in their own right.

In order to achieve the objectives mentioned above, the present invention provides an elevator landing door assembly, which landing door assembly comprises at least a landing door unit to be assembled to a landing door base opening, which base opening has an upper edge, two side edges and a lower edge, which landing door unit comprises at least a top track and one or more door panels suspended by the top track through one or more supporting elements, and a door sill. Advantageously, the assembly comprises fixing elements in the landing door base opening equipped with receiving parts for fastening the landing door unit.

Preferably also, the present invention provides a method for installing an elevator landing door, which landing door assembly comprises at least a landing door unit to be assembled to a landing door base opening having an upper edge, two side edges and a lower edge, which landing door unit comprises at least a top track and one or more door panels suspended by the top track through one or more supporting elements, and a door sill. Advantageously, the landing door base opening is equipped with fixing elements comprising receiving parts for fastening the landing door unit, and the landing door unit is connected to the receiving parts from the side of the floor level and fastened to the receiving parts.

The solution according to the invention, comprising the elevator landing door assembly according to the invention and the method for installing the elevator landing door, has an advantage among other things that the solution saves a lot of installation work in the installation site because a prefabricated landing door unit with its possible frame is very fast and easy to install. Further one advantage is that the installation of the landing doors is easy and safe because almost all the work can be done on the landing floors. There is no need to go inside the elevator shaft, which would cause additional annoyance and danger. Yet another advantage is that the amount of concrete dust can be minimized because there is no need to make massive boring tasks. Also, the cleaning tasks after the installation are faster and easier because the amount of concrete dust is smaller.

DETAILED DESCRIPTION

FIG. 1presents in a simplified and diagrammatic oblique top view an installed elevator landing door assembly according to the invention. The landing door1with its top track5, landing door unit4comprising advantageously a frame, two door panels4a, and a door sill4chas been installed into a base door opening3formed in a wall2of the building, which base door opening3opens to an elevator shaft. The base door opening3comprises an upper edge, two side edges and a lower edge. The type of the landing door inFIG. 1is such that the door panels4aopen by separation from each other toward opposite directions and close toward each other by moving opposite directions. Thus, the landing door1opens from the middle. As well, the two-part landing door could open from one side as is presented later inFIGS. 7-10.

InFIG. 1the landing door installation is not yet complete, so the top track5is seen above the door panels4a, and also a part of the doorsill4cis seen. The structure of the landing door1does not necessarily cover the whole base door opening3, but the final covering is implemented with covering plates or corresponding structures that are fitted to close all the gaps between edges of the base door opening3and the door panels4aand other door components at both the sides of the base door opening3and above it.

Advantageously the base door opening3and its gaps can be covered, for example during the installation time, with a protection wall, such as a hard gypsum panel. This is done preferably to protect against safety hazards until the door or complete elevator installation is to be finalized. Preferably the hard gypsum panel can be enforced.

FIG. 2presents in a simplified and diagrammatic top view an elevator landing door base opening3with the visible walls cross-sectioned just above the floor level8. Only a part of elevator shaft6and its sidewalls6ais seen inFIG. 2but the front wall7of the elevator shaft is completely seen.

A pair of lower fixing elements9for the elevator landing door unit4is fastened onto the floor8at the base door opening3. In this embodiment the lower fixing elements9extent downwards in the vertical level of the front wall7of the elevator shaft6.

FIG. 3presents in a simplified and diagrammatic oblique top view the lower fixing element9of the landing door assembly according to the invention. The lower fixing element9comprises a frame9aand a receiving part9bfor receiving counter parts of the lower part of the landing door unit4to be installed to the base opening3. The frame9ais advantageously an L-shape element with a first flange10and a second flange11that are substantially perpendicular to each other. In addition the frame9acomprises fastening holes12through which the lower fixing element9is fastened at its place onto the edge of the floor8at the base door opening3. The fastening can be made with fastening elements such as screws either onto the floor8or onto the front wall7of the elevator shaft6, or onto the both.

The first flange10is advantageously a horizontal flange and is equipped with the receiving part9bwhose cross-section is like a C-profile, which has a hollow interior, and where a longitudinal slot13is upward. When the lower fixing element9is fastened to its place the longitudinal slot13is directed horizontally towards the elevator shaft6, and is perpendicular to the width of the base opening3.

FIG. 4presents in a simplified and diagrammatic oblique top view an upper fixing element14of the landing door assembly according to the invention. The upper fixing element14comprises a frame14aand a receiving part14bfor receiving counter parts of the upper edge of the landing door unit4to be installed to the base opening3. The frame14ais advantageously an L-shape element with a first flange15and a second flange16that are substantially perpendicular to each other. In addition the frame14acomprises fastening holes17through which the upper fixing element14is fastened at its place onto the upper edge of the base door opening3. The fastening can be made with fastening elements such as screws onto the upper edge of the base door opening3.

The first flange15of the upper fixing element14is advantageously a vertical flange and is equipped with the receiving part14bwhose cross-section is like a C-profile which has a hollow interior, and where the longitudinal slot18is vertical. When the upper fixing element14is fastened to its place the longitudinal slot18is vertical and opens perpendicularly away from the elevator shaft6towards the lobby of the floor level.

FIGS. 5 and 6present in a simplified and diagrammatic view the landing door base opening3equipped with the fixing elements9and14according to the invention. InFIG. 5the landing door base opening3is seen from the elevator shaft6, and inFIG. 6the landing door base opening3is seen in a cross-section A-A ofFIG. 5.

The lower fixing elements9are fastened into their place on the edge of the floor of the floor level8so that the first flange10lies on the floor8and the second flange11is fastened with fastening elements to the vertical front wall7of the elevator shaft. Advantageously the fastening elements are fastening screws or bolts. After fastening the receiving part9bis preferably inside the thickness of the wall2in a horizontal position and the longitudinal slot13is directed horizontally towards the elevator shaft6, and is perpendicular to the width of the door base opening3, as is described above. Advantageously the landing door assembly according to the invention comprises two similar lower fixing elements9that are situated horizontally apart from each other and each in its own vertical line with the other corresponding lower fixing elements9of the other floors of the building.

The upper fixing elements14are fastened into their place on the upper edge of the door base opening3so that the first flange15extends downwards and the second flange16is fastened with fastening elements to the horizontal upper edge of the door base opening3, preferably inside the thickness of the wall2. Advantageously the fastening elements are fastening screws or bolts. After fastening the receiving part14bis preferably inside the thickness of the wall2in a vertical position and the longitudinal slot18is open away from the elevator shaft6towards the lobby of floor level8, as is described above. Advantageously the landing door assembly according to the invention comprises two similar upper fixing elements14that are situated horizontally apart from each other and each in its own vertical line with the other corresponding upper fixing elements14of the other floors of the building.

FIGS. 7-9present in a simplified and diagrammatic view the installation of the elevator landing door unit4into the elevator landing door base opening3. Advantageously the elevator landing door unit4also comprises a frame that is not presented in the figures.

FIGS. 7 and 8are shown in the cross-section A-A ofFIG. 5, andFIG. 9is seen from the elevator shaft6. InFIG. 7the fastening of the landing door unit4has been just started, and inFIGS. 8 and 9the landing door unit4has been fastened at its place inside the landing door base opening3within the thickness of the wall2.FIGS. 7-9show such an embodiment of the invention where the landing door opens to one side. In this embodiment the door panels4aare suspended from the top track5in different sides of the top track5so that the first door panel4ais suspended by a first supporter20in the first side of the top track5and the second door panel4ais suspended by a second supporter21in the second side of the top track5.

The landing door unit4comprises upper counter parts19at its upper edge and lower counter parts19aat its lower edge. The number of upper and lower counterparts19,19ais the same as the number of upper and lower fixing elements9,14in one elevator landing door base opening3. Advantageously the landing door unit4comprises two upper counter parts19and two lower counter parts19a. The horizontal distance between the upper counter parts19is the same as the horizontal distance between the upper fixing elements14, and the horizontal distance between the lower counter parts19ais the same as the horizontal distance between the lower fixing elements9.

The landing door unit4that is prefabricated in a factory, is installed to the base door base opening3by guiding the upper counter parts19first from under to the vertical slots18of the upper fixing elements14. When the upper counter parts19are guided by the vertical slots18the landing door unit4is pushed upward and preferably simultaneously its lower edge is turned towards the elevator shaft6. The turning is continued until the lower counter parts19areach the lower fixing elements9. At this time the lower counter parts19aare guided to the horizontal slots13of the lower fixing elements9and the turning is continued until the landing door unit4is substantially in a vertical position in its place. After that the final position of the landing door unit4is adjusted in the fixing elements9and14.

FIG. 10presents in a simplified and diagrammatic view the elevator landing door base opening3according toFIG. 5in the cross-section A-A, and in a situation where the landing door unit4has been fastened at its place. In this embodiment the landing door unit4is fastened totally inside the elevator shaft6and for that reason the fixing elements9and14differ in their structures from the fixing elements9and14presented inFIGS. 2-9. The only decisive difference is that the receiving part9bof the lower fixing elements9extends inside the elevator shaft6and the receiving part14bof the upper fixing elements14is totally inside the elevator shaft6. The landing door unit4itself can be similar to the landing door unit4presented inFIGS. 7-9.

FIGS. 11 and 12present an upper counter element19to be fitted into the upper fixing element14of the elevator landing door unit4. The upper counter element19comprises an L-shaped frame22with a first flange22aand a second flange22bwhich flanges are perpendicular to each other. The upper counter element19is fastened to the upper edge of the landing door unit4through the first flange22awith fastening elements, such as screws. The second flange22bis preferably in a vertical position and comprises a longitudinal vertical slot25for adjusting the height position of the landing door unit4. The slot25is equipped with a bolt24that is fastened with screw threads to a tightening element23, such as a tightening plate.

The width of the tightening element23is smaller than the width of interior of the C-profile of the receiving part14b, and the diameter of the bolt24is smaller than the width of the slot18of the receiving part14b. Therefore, when installing the landing door unit4the tightening element23can be placed inside the C-profile of the receiving part14bin such a way that the bolt24is guided by the slot18. When the landing door unit4is adjusted to its correct height position the tightening element23is tightened by the help of the bolt24to the receiving part14bso that the landing door unit4remains its correct height position. The structure of the lower counter parts19acan be substantially the same as the structure of the upper counter parts19but may also be different.

The combination of lower fixing elements9with the lower counter parts19aand the upper fixing elements14with the upper counter parts19makes it possible to adjust the position of the landing door unit4in three dimensions. This is useful when performing the final position adjustments of the landing doors.

With the installation method according to the invention the landing door assembly can be safely installed from the landing side. This means that all the installation work can be done from the side of the floor level8and there is no need to go to the elevator shaft6.

The installation method according to the invention has advantageously at least steps as follows:the lower fixing elements9and the upper fixing elements14are fastened into their places in the landing door base opening3the prefabricated landing door unit4with its frame is suspended first to the upper fixing elements14by guiding the upper counter parts19to the receiving parts14bof the upper fixing elements14the lower part of the landing door unit4is turned towards the elevator shaft6and the lower counter parts19aare secured to the lower fixing elements9the landing door base opening3or at least gaps at the opening are covered with a hard protection wall or plate.

It is obvious to the person skilled in the art that the invention is not restricted to the example described above but that it may be varied within the scope of the claims presented below.