FI130285B

FI130285B - An elevator shaft frame structure and a method for assembling an elevator shaft frame

Info

Publication number: FI130285B
Application number: FI20195124A
Authority: FI
Inventors: Otto Hartikainen
Original assignee: Fullmetal Group Oy
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2023-06-02
Also published as: FI20195124A1

Abstract

An elevator shaft frame structure and a method for assembling an elevator shaft frame are disclosed. The structure comprises multiple standardized constructional frame elements. Vertical corner bars (10) and vertical guide rail bars (20) are connected by horizontal elements (30). The vertical corner bars (10) and vertical guide bars (20) have flush outer surface, facing outside the elevator shaft. The fastening portions of the vertical elements are recessed behind the outer surface when seen from the outside, enabling the fastenings and connections to be hidden. The horizontal elements (30) have protruding portions to be connected to vertical elements. The protruding portions behind the outer surface match the recessed portions of the vertical elements. When the fastenings are tightened, the outer surfaces of the horizontal elements and the vertical elements align, thereby providing flush assembly without visible connections.

Description

AN ELEVATOR SHAFT FRAME STRUCTURE AND A METHOD FOR

ASSEMBLING AN ELEVATOR SHAFT FRAME

BACKGROUND

The invention relates to elevators, more specifically to elevator shaft frames.

Older buildings may have been constructed without the elevator. Reaching the upper floors may become difficult for some people or carrying items to upper floors is cumbersome. Sometimes the old elevator shaft does not conform to modern safety standards. For example, the shaft may be covered with unsafe mesh structure, allowing fingers or objects to be inserted into the shaft. The old shaft may have been damaged or corroded, or it may not be structurally sound anymore.

Retrofitting modern elevators into old buildings may be difficult as there is no predefined space for the elevator shaft. In some cases, portion of the staircase may be removed to enable fitting the elevator shaft. Alternatively, the elevator shaft may be fitted along an outer wall of the building. A common problem is the lack of space for the retrofitted elevator shaft, therefore the frame structure should be as slim as possible to enable fitting a spacious elevator car. = As the buildings needing retrofitted elevator shafts are not standardized, the

N

& elevator shaft frames have often used customized elements. Many steps of the

O

0 assembly process must be executed on-site from small elements. This in turn > 25 increases costs and consumes time. a <

N

LO o

O

N

SUMMARY

This summary is provided to introduce a selection of concepts in a simplified form that will be further described below in the detailed description. This summary is intended to neither identify key features or essential features of the claimed subject matter nor to be used to limit the scope of the claimed subject matter. Furthermore, the claimed subject matter is not limited to implementations that solve any or all of the disadvantages noted in any part of this disclosure.

An elevator shaft frame structure and a method for assembling an elevator shaft frame are disclosed. The structure comprises multiple constructional frame elements that may be standardized to modular assembly process. Vertical corner bars and vertical guide rail bars are connected by horizontal elements.

The vertical corner bars and vertical guide bars may be arranged to flush outer surface, facing outside the elevator shaft. The fastening portions of the vertical elements are recessed behind the outer surface when seen from the outside, enabling the fastenings and connections to be hidden. The horizontal elements have protruding portions to be connected to vertical elements. The protruding portions behind the outer surface match the recessed portions of the vertical elements. When the fastenings are tightened, the outer surfaces of the horizontal elements and the vertical elements align, thereby providing flush assembly without visible connections.

The flush assembly is aesthetically pleasing, removing possible steps of covering the fastenings after the assembly with decorative panels. The outer > surfaces may be finished at the factory.

O

N 25 The flat elevator shaft frame structure allows fitting larger elevator car into the 2 elevator shaft. The modular structure enables fitting the elevator shaft frame to > various locations. The elements may be manufactured in multiple sizes. The

E simple structure allows fast manufacturing and maintaining a small element 3 inventory. Serial production allows lowering the manufacturing costs. = 30 Large structures may be pre-installed and joined together at the construction site. The solution allows lifting large portions of elevator shaft frame on top of each other with vertical corner bar connectors or guide rail connectors.

The elevator shaft structure may be assembled with bolts, nuts or similar fastening means without additional welding. The assembly process is safe, as it does not require any heat or fire in the process. The assembly personnel do not require a hot work permit.

Many of the attendant features will be more readily appreciated as they become better understood by reference to the following detailed description considered in connection with the accompanying drawings. The embodiments described below are not limited to implementations which solve any or all the disadvantages of known elevator shaft structures or elevator shaft assembly methods.

BRIEF DESCRIPTION OF THE DRAWINGS

The present description will be better understood from the following detailed description read in light of the accompanying drawings, wherein

FIG. 1 illustrates schematically one exemplary embodiment of a vertical corner bar;

FIG. 2 illustrates schematically one exemplary embodiment a vertical guide rail bar;

FIG. 3 illustrates schematically one exemplary embodiment of a horizontal element; = FIG. 4 illustrates schematically one exemplary embodiment of the vertical guide

N

& rail bar with a vertical connector plate; and

O

S drawings.

O

N

DETAILED DESCRIPTION

The detailed description provided below in connection with the appended drawings is intended as a description of the present examples and is not intended to represent the only forms in which the present example may be constructed or utilized. However, the same or any equivalent functions and sequences may be accomplished by different examples.

FIG. 5 illustrates schematically one exemplary embodiment of the elevator shaft frame structure, when fully assembled. The structure comprises multiple consecutive vertical corner bars 10, vertical guide rail bars 20 and multiple horizontal elements 30. The structure may be preassembled for singular floors or multiple floors. In one embodiment the whole structure is preassembled and lifted to position at the building. This method is particularly useful when the elevator shaft frame structure is positioned against an outer wall of the building.

The structural dimensions may be varied by altering lengths of the components.

In one embodiment, the elevator shaft frame is made of metal, steel or suitable alloy. In one embodiment the structure comprises composite components.

FIG. 1 illustrates schematically one exemplary embodiment of the vertical corner bar 10. The vertical corner bar comprises two L-shaped bars 11, 12, wherein both inner corners face each other and are connected symmetrically along the longitudinal axis. An outer corner of a first L-profile bar 11 is facing outside the elevator shaft, thereby defining one outer surface being visible from the elevator shaft frame. The outer surface has a flat surface, without any openings or fastening means when assembled. A second L-profile bar 12 is > connected transversely to the first L-profile bar, opposite profile portions being

N 25 aligned. The second L-profile bar 12 is facing inside the elevator shaft, thereby

S defining one inner surface not being visible from the elevator shaft frame when = assembled. The second L-profile bar 12 has a plurality of oblong openings 13 at

E: both flat surfaces along the second L-profile bar 12 for attaching the fastening

S means. In one embodiment said fastening means are bolts and threaded nuts io 30 tightened through the oblong openings 13, 23, 33. In one embodiment the bolts > are T-bolts configured to align with the oblong openings 13, 23, 33. As the nut is tightened, the wide end of the T-bolt may remain in place in the oblong opening

12, 23, 33, thereby removing the need of securing the wide end of the bolt with another tool.

The first L-profile bar 11 has wider flat surfaces than the second L-profile bar 12 by a first distance X. The first distance X provides a recess, allowing the 5 tightening means to be connected into non-visible portion of the shaft frame structure. The first distance X is the modular measurement allowing various components to interact by providing minimal gap between the outer surfaces.

FIG. 2 illustrates schematically one exemplary embodiment of the vertical guide rail bar 20. The vertical guide rail bars 20 comprises a first flat bar 21 facing outside the elevator shaft, thereby defining the portion being visible to outside the elevator shaft. The outer surface has a flat surface, without openings. In some embodiments some holes may be drilled through the first flat bar 21 in order to connect it to a building wall or other structure supporting the elevator frame. A U-profile bar 22 is aligned with the first flat bar 21 and connected from the edges of the open surface to the first flat bar 21. The U-profile bar 22 is connected symmetrically along the longitudinal middle line of the first flat bar 21.

The U-profile bar 22 is facing inside the elevator shaft, having a plurality of oblong openings 23 at two opposite surfaces. The oblong openings 23 provide platform for the fastening means. In one embodiment all three sides of the U- profile bar comprise oblong openings 23. The first flat bar 21 is wider than the

U-profile bar 22 by the first distance X, providing a recessed connection for the fastening means. The tightening means may be connected into non-visible portion of the shaft frame structure. > FIG. 3 illustrates schematically one exemplary embodiment of the horizontal

N 25 element 30. The horizontal element comprises a rectangular bar 31 facing

S outside the elevator shaft, thereby defining the portion being visible to outside = the elevator shaft. The rectangular bar is in one example a flat sheet metal. The

E outer surface has a flat surface, without openings. In some embodiments some

S holes may be drilled through the rectangular bar 31 in order to connect it to a io 30 building wall or other structure supporting the elevator frame. A horizontal > rectangular frame 32 faces inside the elevator shaft, being connected to the rectangular bar 31. The rectangular frame 32 extends horizontally beyond the rectangular bar 31. The rectangular bar 31 extends vertically beyond the rectangular frame 32. The rectangular frame comprises four second flat bars 34, 35 having a similar profile. The second flat bars 34, 35 have a plurality of oblong openings 33 that, when connected by fastening means to vertical corner bar 20 or to the vertical guide rail bar 30, remain hidden to outside the elevator shaft. Vertical second flat bars 34 are at the first distance X from both ends of the rectangular bar 31. Horizontal second flat bars 35 are connected to the first distance X from the horizontal edges 36 of the rectangular bar 31. The second flat bars 34 are transversely attached to the rectangular bar 31.

The first distance X defined with the vertical corner bar 10 and the vertical guide rail bar 20 is the distance of the recess and similar to both components 10, 20.

The distance X defined with the horizontal element 30 is the distance of extension configured to interact with said recesses of the vertical corner bar 10 and the vertical guide rail bar 20. The oblong openings 13, 23, 33 at vertical corner bars 10, vertical guide rail bars 20 and horizontal elements 30 are configured to align when connected. The oblong opening allows flexibility in selecting the final position for the fastening means. In some embodiments the elevator structure may require space that may be freed by repositioning the fastening means. In some embodiments the elevator structure may be connected to the oblong openings, allowing freedom in elevator design and production. The elevator structure and the elevator frame structure may me sourced from different suppliers. When the elevator shaft frame is assembled, the outer surfaces form flat surface. The outer surface may be coated at the production facility, thereby improving the assembly process. Alternatively, or in = 25 addition, the elements 10, 20, 30 may be configured to be assembled at

N different surface levels, in order to provide a visual effect highlighting the 2 structure. As one example, outer surface of the corner bar 10 and/or the vertical > guide rail bar 20 may protrude 1...5 mm further outside the elevator shaft than & the horizontal element's 30 outer surface. 3 30 In one embodiment the elevator shaft frame structure comprises a corner bar 2 connector 44 configured to connect two vertical corner bars 10 together in s lengthwise direction. The ends of the vertical corner bars 10 connect, while the corner bar connector 44 is inside the hollow vertical corner bars 10. The corner bar connector 44 is an elongated object, configured to fit in the space defined between the first L-profile bar 11 and the second L-profile bar 12. The corner bar connector 44 comprises multiple bolt threads facing the oblong openings 13 of the vertical corner bars 10. When assembled, the corner bar connector 44 extends simultaneously to two consecutive vertical corner bars 10. The fastening means are bolts being tightened via the oblong openings 13 to the bolt threads. When assembling the frame structure, one bolt may be connected to the trailing end of the corner bar connector 44 to prevent it from falling into the hollow bar 10. Once the leading end has been inserted into the hollow bar 10 and secured by a bolt via the oblong opening 13, the bolt at the trailing end may be removed. The bolt at the trailing end is connected when the upper vertical corner bar 10 has been places over the protruding portion of the vertical corner bar connector 44.

In one embodiment the elevator shaft frame structure comprises a guide rail bar connector 43 configured to connect two vertical guide rail bars 20 together in lengthwise direction. The ends of the vertical guide rail bars 20 connect, while the guide rail bar is inside the hollow vertical guide rail bars 20. The guide rail bar connector 43 is an elongated object, configured to fit in the space defined between the U-profile bar 22 and the first flat bar 21 at the vertical guide rail bar 20. The guide rail bar connector 43 comprises multiple bolt threads facing the oblong openings 23 of the vertical guide rail bars 20. When assembled, the guide rail bar connector 43 extends simultaneously to two consecutive vertical guide rail bars 20. The fastening means are bolts being tightened via the oblong openings 23 to the bolt threads. When assembling the frame structure, one bolt = 25 may be connected to the trailing end of the guide rail bar connector 43 to

N prevent it from falling into the hollow bar 20. Once the leading end has been 2 inserted into the hollow bar 20 and secured by a bolt via the oblong opening 23, > the bolt at the trailing end may be removed. The bolt at the trailing end is & connected when the upper vertical guide rail bar has been placed over the

N 30 protruding portion of the guide rail bar connector 43.

LO

2 FIG. 4 illustrates schematically one exemplary embodiment of the vertical guide s rail bar 20. The vertical guide rail bar 20 comprises a flat, vertical connector plate 41 facing inside the elevator shaft. The vertical connector plate may be used as a connecting platform form an elevator rail or other elevator structures.

As the vertical connector plate 41 may exert additional forces to the elevator shaft structure, the structure is reinforced by a support flange 42. The support flange 42 is inside the space defined between the U-profile bar 22 and the first flat bar 21.

In the present example the guide rail bar connector 43 and the corner bar connector 44 comprise the same shape. The guide rail connector 43 comprises two corner bar connectors 44 assembled side by side. The corner bar connector 44 has at least one bevelled corner suitable for inserting into the bent inside corner of a U-bar or a L-bar.

FIG. 5 illustrates schematically one exemplary embodiment of the elevator shaft frame structure. In the example the first and the top floor are lower than the floors in between. With first floor and the top floor assembly the T-bolts may be used as fastening means. The assemble space may be cramped and fitting the guide rail bar connector 43 and/or the corner bar connector 44 may be difficult.

The method for assembling the elevator frame structure comprises aligning oblong openings 13, 33 of the vertical second flat bar 34 of the horizontal element 30 and the second L-bar 12 of the vertical corner bar 10. The fastening means, such as bolts, are positioned through the aligned openings 13, 33 and tightened, thereby connecting the horizontal element 30 to the vertical corner bar. Connecting the horizontal element 30 to the vertical guide rail bar 20 comprises aligning oblong openings 23, 33 of the vertical second flat bar 34 of the horizontal element 30 and the U-profile bar 22 of the guide rail bar 20. The > fastening means are positioned through the aligned openings 23, 33 and

N 25 tightened, thereby connecting the horizontal element 30 to the vertical guide rail

S bar 20. The tightened connections and fastening means result to flush or = substantially flush outer surface with minimal gaps between the horizontal

E: element 30 and the vertical components 10, 20.

N The assembly method comprises, in one embodiment, a preassembly step. At o 30 least one floor height of the elevator shaft structure is preassembled at the

N manufacturing facility, wherein the preassembled module comprises vertical corner rail bars 10, vertical guide rail bars 20 and horizontal elements 30. The two preassembled structure modules may be assembled at the building site by connecting the consecutive vertical corner bars 10 by corner bar connectors 44 and/or connecting the consecutive vertical guide rail bars 20 by guide rail connectors.

An elevator shaft frame structure is disclosed, having a plurality of constructional frame elements. The structure comprises vertical corner bars, vertical guide rail bars and horizontal elements connected to the vertical corner bars and the vertical guide rail bars; and fastening means for connecting the horizontal elements to the vertical corner bars and/or to vertical guide rail bars.

The vertical corner bars comprise a first L-profile bar facing outside the elevator shaft, the outer surface having a flat surface, and a second L-profile bar connected transversely to the first L-profile bar and facing inside the elevator shaft, having a plurality of oblong openings at both flat surfaces along the second L-profile bar for attaching the fastening means, and wherein the first L- profile bar has wider flat surfaces than the second L-profile bar by a first distance; the vertical guide rail bars comprising a first flat bar facing outside the elevator shaft, the outer surface having a flat surface, and an U-profile bar connected from the edges of the open surface to the first flat bar and facing inside the elevator shaft, having a plurality of oblong openings at two surfaces along the U-profile bar connected to the first flat bar for attaching the fastening means and wherein the first flat bar is wider than the U-profile bar by the first distance; and the horizontal elements comprising a rectangular bar facing outside the elevator shaft, the outer surface having a flat surface, and a horizontal rectangular frame facing inside the elevator shaft connected to the = 25 rectangular bar, comprising four second flat bars having a plurality of oblong

N openings, wherein vertical second flat bars are at the first distance from both 2 ends of the rectangular bar and horizontal second flat bars are connected to the > first distance from the horizontal edges of the rectangular bar and wherein the & second flat bars are transversely to the rectangular bar. In one embodiment, the

N 30 oblong openings at vertical corner bars, vertical guide rail bars and horizontal 3 elements are configured to align when connected. In one embodiment a corner

N bar connector is configured to fit in the space defined between the first L-profile bar and the second L-profile bar at the vertical corner bar, said corner bar connector comprising multiple bolt threads facing the oblong openings, and extending simultaneously to two consecutive vertical corner bars, wherein the fastening means are bolts being tightened to connect two vertical corner bars together in lengthwise direction. In one embodiment a guide rail bar connector is configured to fit in the space defined between the U-profile bar and the first flat bar at the vertical guide rail bar, said connector comprising multiple bolt threads facing the oblong openings, and extending simultaneously to two consecutive vertical guide rail bars, connecting two vertical guide rail bars together in lengthwise direction. In one embodiment, the fastening means are bolts and threaded nuts tightened through the oblong openings. In one embodiment, the vertical guide rail bars comprise a flat, vertical connector plate facing inside the elevator shaft and a support flange is inside the space defined between the U-profile bar and the first flat bar. In one embodiment, the structure is preassembled for multiple floors having multiple consecutive vertical corner bars, vertical guide rail bars and multiple horizontal elements.

Alternatively, or in addition, a method for assembling an elevator shaft frame having a plurality of constructional frame elements is disclosed. The method comprises a structure of vertical corner bars, vertical guide rail bars and horizontal elements connected to the vertical corner bars and the vertical guide rail bars; and fastening means for connecting the horizontal elements to the vertical corner bars and/or to vertical guide rail bars. The vertical corner bars comprise a first L-profile bar facing outside the elevator shaft, the outer surface having a flat surface, and a second L-profile bar connected transversely to the first L-profile bar and facing inside the elevator shaft, having a plurality of oblong = 25 openings at both flat surfaces along the second L-profile bar for attaching the

N fastening means, and wherein the first L-profile bar has wider flat surfaces than 2 the second L-profile bar by a first distance; the vertical guide rail bars > comprising a first flat bar facing outside the elevator shaft, the outer surface & having a flat surface, and an U-profile bar connected from the edges of the

N 30 open surface to the first flat bar and facing inside the elevator shaft, having a 3 plurality of oblong openings at two surfaces along the U-profile bar connected to

N the first flat bar for attaching the fastening means and wherein the first flat bar is wider than the U-profile bar by the first distance; and the horizontal elements comprising a rectangular bar facing outside the elevator shaft, the outer surface having a flat surface, and a horizontal rectangular frame facing inside the elevator shaft connected to the rectangular bar, comprising four second flat bars having a plurality of oblong openings, wherein vertical second flat bars are at the first distance from both ends of the rectangular bar and horizontal second flat bars are connected to the first distance from the horizontal edges of the rectangular bar and wherein the second flat bars are transversely to the rectangular bar. The method comprises: aligning oblong openings of the vertical second flat bar and the second L-bar, positioning the fastening means through the aligned openings and tightening the fastening means, thereby connecting the horizontal element to the vertical corner bar; aligning oblong openings of the vertical second flat bar and the U-profile bar, positioning the fastening means through the aligned openings and tightening the fastening means, thereby connecting the horizontal element to the vertical guide rail bar. In one embodiment, the elevator shaft frame elements comprise a corner bar connector, configured to fit in the space defined between the first L-profile bar and the second L-profile bar at the vertical corner bar, said corner bar connector comprising multiple bolt threads facing the oblong openings, and extending simultaneously to two consecutive vertical corner bars, wherein the method comprises: inserting first portion of the corner bar connector into said space; aligning a first bolt thread with the oblong opening; tightening a first bolt via the oblong opening of the first corner bar into the first bolt thread; positioning a second vertical corner bar onto the corner bar connector; and tightening a second bolt via the oblong opening into a second bolt thread. In one o 25 embodiment, the elevator shaft frame elements comprise a guide rail bar

S connector, configured to fit in the space defined between the U-profile bar and

S the first flat bar at the vertical guide rail bar, said connector comprising multiple 2 bolt threads facing the oblong openings, and extending simultaneously to two

E consecutive vertical guide rail bars, wherein the method comprises: inserting

X 30 first portion of the guide rail bar connector into said space; aligning a first bolt io thread with the oblong opening; tightening a first bolt via the oblong opening of > the first vertical guide rail bar into the first bolt thread; positioning a second vertical guide rail bar onto the guide rail bar connector; and tightening a second bolt via the oblong opening into a second bolt thread. In one embodiment, the method comprises preassembling the structure for at least one floor height having vertical corner rail bars, vertical guide rail bars and horizontal elements.

In one embodiment, the method comprises connecting two preassembled structures by connecting the consecutive vertical corner bars by corner bar connectors. In one embodiment, the method comprises connecting two preassembled structures by connecting the consecutive vertical guide rail bars by guide rail connectors.

Any range or device value given herein may be extended or altered without losing the effect sought.

Although at least a portion of the subject matter has been described in language specific to structural features and/or acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as examples of implementing the claims and other equivalent features and acts are intended to be within the scope of the claims.

It will be understood that the benefits and advantages described above may relate to one embodiment or may relate to several embodiments. The embodiments are not limited to those that solve any or all of the stated problems or those that have any or all of the stated benefits and advantages. It will further be understood that any reference to ‘an’ item refers to one or more of those items.

The steps of the methods described herein may be carried out in any suitable = order, or simultaneously where appropriate. Additionally, individual blocks may

N 25 be deleted from any of the methods without departing from the spirit and scope 2 of the subject matter described herein. Aspects of any of the examples > described above may be combined with aspects of any of the other examples : described to form further examples without losing the effect sought. > The term ‘comprising’ is used herein to mean including the method blocks or > 30 elements identified, but that such blocks or elements do not comprise an exclusive list and a method or apparatus may contain additional blocks or elements.

It will be understood that the above description is given by way of example only and that various modifications may be made by those skilled in the art. The above specification, examples and data provide a complete description of the structure and use of exemplary embodiments. Although various embodiments have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the spirit or scope of this specification. oO

O

N

<Q 0

I a a <

N

LO o

O

N

Claims

1. An elevator shaft frame structure, having a plurality of constructional frame elements, comprising: vertical corner bars (10), vertical guide rail bars (20) and horizontal elements (30) connected to the vertical corner bars (10) and the vertical guide rail bars (20); and fastening means for connecting the horizontal elements (30) to the vertical corner bars (10) and/or to vertical guide rail bars (20); characterized by: the vertical corner bars (10) comprising a first L-profile bar (11) facing outside the elevator shaft, the outer surface having a flat surface, and a second L-profile bar (12) connected transversely to the first L-profile bar (11) and facing inside the elevator shaft, having a plurality of oblong openings (13) at both flat surfaces along the second L-profile bar (12) for attaching the fastening means, and wherein the first L-profile bar (11) has wider flat surfaces than the second L-profile bar (12) by a first distance (X); the vertical guide rail bars (20) comprising a first flat bar (21) facing outside the elevator shaft, the outer surface having a flat surface, and an U-profile bar (22) connected from the edges of the open surface to the first flat bar (21) and facing inside the elevator shaft, having a plurality of oblong openings (23) at two surfaces along the U-profile bar (22) connected to the first flat bar (21) for attaching the fastening means and N 25 wherein the first flat bar (21) is wider than the U-profile bar (22) by the = first distance (X); and N the horizontal elements (30) comprising a rectangular bar (31) facing 7 outside the elevator shaft, the outer surface having a flat surface, and a & horizontal rectangular frame (32) facing inside the elevator shaft N 30 connected to the rectangular bar (31), comprising four second flat bars 3 (34, 35) having a plurality of oblong openings (33), wherein vertical a second flat bars (34) are at the first distance (X) from both ends of the rectangular bar (31) and horizontal second flat bars (35) are connected to the first distance (X) from the horizontal edges (36) of the rectangular bar (31) and wherein the second flat bars (35) are transversely to the rectangular bar (31).

2. An elevator shaft frame structure according to claim 1, characterized in thatthe oblong openings (13, 23, 33) at vertical corner bars (10), vertical guide rail bars (20) and horizontal elements (30) are configured to align when connected.

3. An elevator shaft frame structure according to claim 1 or claim 2, characterized by comprising a corner bar connector (44), configured to fit in the space defined between the first L-profile bar (11) and the second L-profile bar (12) at the vertical corner bar (10), said corner bar connector (44) comprising multiple bolt threads facing the oblong openings (13), and extending simultaneously to two consecutive vertical corner bars (10), wherein the fastening means are bolts being tightened to connect two vertical corner bars (10) together in lengthwise direction.

4. An elevator shaft frame structure according to claim 1 or claim 2, characterized by comprising a guide rail bar connector (43), configured to fit in the space defined between the U-profile bar (22) and the first flat bar (21) at the vertical guide rail bar (20), said connector comprising multiple bolt threads facing the oblong openings (23), and N 25 extending simultaneously to two consecutive vertical guide rail bars (20), N connecting two vertical guide rail bars (20) together in lengthwise = direction. S

E 5. An elevator shaft frame structure according to any of the claims 1 to 4, N 30 characterized in that the fastening means are bolts and threaded io nuts tightened through the oblong openings. N

6. An elevator shaft frame structure according to any of the claims 1 to 5, characterized in that the vertical guide rail bars (20) comprise a flat, vertical connector plate (41) facing inside the elevator shaft and a support flange (42) is inside the space defined between the U-profile bar (22) and the first flat bar (21).

7. An elevator shaft frame structure according to any of the claims 1 to 6, characterized in thatthe structure is preassembled for multiple floors having multiple consecutive vertical corner bars (10), vertical guide rail bars (20) and multiple horizontal elements (30).

8. A method for assembling an elevator shaft frame having a plurality of constructional frame elements, comprising: vertical corner bars (10), vertical guide rail bars (20) and horizontal elements (30) connected to the vertical corner bars (10) and the vertical guide rail bars (20); and fastening means for connecting the horizontal elements (30) to the vertical corner bars (10) and/or to vertical guide rail bars (20); characterized in that the elevator shaft frame elements comprise: the vertical corner bars (10) comprising a first L-profile bar (11) facing outside the elevator shaft, the outer surface having a flat surface, and a second L-profile bar (12) connected transversely to the first L-profile bar (11) and facing inside the elevator shaft, having a plurality of oblong openings (13) at both flat surfaces along the second L-profile bar (12) for attaching the fastening means, and wherein the first L-profile bar (11) has wider flat surfaces than the second L-profile bar (12) by a first N 25 distance (X); N the vertical guide rail bars (20) comprising a first flat bar (21) facing = outside the elevator shaft, the outer surface having a flat surface, and an S U-profile bar (22) connected from the edges of the open surface to the E first flat bar (21) and facing inside the elevator shaft, having a plurality of N 30 oblong openings (23) at two surfaces along the U-profile bar (22) io connected to the first flat bar (21) for attaching the fastening means and > wherein the first flat bar (21) is wider than the U-profile bar (22) by the first distance (X); and the horizontal elements (30) comprising a rectangular bar (31) facing outside the elevator shaft, the outer surface having a flat surface, and a horizontal rectangular frame (32) facing inside the elevator shaft connected to the rectangular bar (31), comprising four second flat bars (34, 35) having a plurality of oblong openings (33), wherein vertical second flat bars (34) are at the first distance (X) from both ends of the rectangular bar (31) and horizontal second flat bars (35) are connected to the first distance (X) from the horizontal edges of the rectangular bar (31) and wherein the second flat bars (35) are transversely to the rectangular bar (31), wherein the method comprises: aligning oblong openings (13, 33) of the vertical second flat bar (34) and the second L-bar (12), positioning the fastening means through the aligned openings (13, 33) and tightening the fastening means, thereby connecting the horizontal element (30) to the vertical corner bar (10); aligning oblong openings (23, 33) of the vertical second flat bar (34) and the U-profile bar (22), positioning the fastening means through the aligned openings (23, 33) and tightening the fastening means, thereby connecting the horizontal element (30) to the vertical guide rail bar (20).

9. A method according to claim 8, characterized in thatthe elevator shaft frame elements comprise a corner bar connector (44), configured to fit in the space defined between the first L-profile bar (11) and the second L-profile bar (12) at the vertical corner bar (10), said corner bar connector (44) comprising multiple bolt threads facing the oblong openings, and N 25 extending simultaneously to two consecutive vertical corner bars (10), N wherein the method comprises: = inserting first portion of the corner bar connector (44) into said space; S aligning a first bolt thread with the oblong opening; E tightening a first bolt via the oblong opening of the first corner bar into the N 30 first bolt threadi; io positioning a second vertical corner bar onto the corner bar connector > (44); and tightening a second bolt via the oblong opening into a second bolt thread.

10. A method according to claim 8, characterized in that the elevator shaft frame elements comprise a guide rail bar connector (43), configured to fit in the space defined between the U-profile bar (22) and the first flat bar (21) at the vertical guide rail bar (20), said connector comprising multiple bolt threads facing the oblong openings, and extending simultaneously to two consecutive vertical guide rail bars (20), wherein the method comprises: inserting first portion of the guide rail bar connector (43) into said space; aligning a first bolt thread with the oblong opening; tightening a first bolt via the oblong opening of the first vertical guide rail bar (20) into the first bolt thread; positioning a second vertical guide rail bar (20) onto the guide rail bar connector (43); and tightening a second bolt via the oblong opening into a second bolt thread.

11. A method according to according to any of the claims 8 to 10, characterized by preassembling the structure for at least one floor height having vertical corner rail bars, vertical guide rail bars (20) and horizontal elements (30).

12. A method according to according to claim 11, characterized by connecting two preassembled structures by connecting the consecutive vertical corner bars (10) by corner bar connectors (44). N 25

13.A method according to according to claim 10 or claim 11, N characterized by connecting two preassembled structures by = connecting the consecutive vertical guide rail bars (20) by guide rail S connectors. j N 3 N