TECHNICAL FIELD

The invention relates to a field of elevators, especially floor structures of cars of the elevators.

TECHNICAL BACKGROUND

Companies operating in an elevator business usually have a plurality of elevator types in a product portfolio. Components of the elevator are usually tailored according to the type of the elevator. One of these components is a car of the elevator which comprises a plurality of mechanical assemblies. Because of the wide variety of the elevator types, a plurality of car models is needed. To maintain a plurality of the separate car models may be ineffective from manufacturing and cost point of view. Hence, harmonization and modularization of the cars is essential. The car comprises a plurality of the mechanical assemblies like a floor assembly, for example. A structure of the floor assembly may vary according to the type of the elevators. A modular platform structure of the floor assembly reduces the amount of the different kind of mechanical assemblies in the different type of the cars. Still, the known modular platform solutions have many drawbacks.

Hence, a more sophisticated modular solution for the floor structure of the car of the elevator is needed. The present invention alleviates the drawbacks of the known solutions.

BRIEF DESCRIPTION

The present invention is defined by the subject matter of the independent claim.

Embodiments are defined in the dependent claims.

The embodiments and features, if any, described in this specification that do not fall under the scope of the independent claim are to be interpreted as examples useful for understanding various embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following the invention will be described in greater detail by means of preferred embodiments with reference to the attached drawings, in which

Figures 1A and IB illustrate a floor structure according to an embodiment of the invention;

Figures 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D and 3E illustrate integral interlock elements according to an embodiment of the invention; and

Figures 4A, 4B and 4C illustrate a floor plate of the floor structure according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

The following embodiments are exemplifying. Although the specification may refer to “an”, “one”, or “some” embodiment(s) in several locations of the text, this does not necessarily mean that each reference is made to the same embodiment(s), or that a particular feature only applies to a single embodiment. Single features of different embodiments may also be combined to provide other embodiments.

A modular floor structure of a car of an elevator shall be as simple as possible but still strong enough to bear mechanical stress. The invention provides a solution which is simple and strong and is also modular, and hence can be scaled to meet different kind of requirements.

According to an aspect of the invention, there is provided the floor structure of the car of the elevator 100 comprising a first and a second end parts 102A, 102B, and a first and a second side parts 104A, 104B, wherein each part 102A, 102B, 104A, 104B comprises a first and a second end 1O2A_E1, 102A_E2, 102B.E1, 102B_E2, 104A.E1, 104A_E2, 104B.E1, 104B_E2 with at least a first and a second integral interlock element 106A, 106B, wherein the first integral interlock elements 106A of the end parts 102A, 102B are configured to be coupled with the first integral interlock elements 106A of the side parts 104A, 104B, and the second integral interlock elements 106B of the end parts 102A, 102B are configured to be coupled with the second integral interlock elements 106B of the side parts 104A, 104B, wherein the first end of the first end part 1O2A_E1 is configured to be coupled with the first end of the first side part 104A_El, and the second end of the first end part 102A_E2 is configured to be coupled with the first end of the second side part 1O4B_E1, and the first end of the second end part 1O2B_E1 is configured to be coupled with the second end of the first side part 104A_E2, and the second end of the second end part 102B_E2 is configured to be coupled with the second end of the second side part 104B_E2 to form the floor structure 100 coupled together, at least, by the integral interlock elements 106A, 106B.

In an embodiment, the end and side parts may be made of a steel pipe (tube). A cross section of the pipe may be substantially square. Dimensions of the pipe may be selected according to the needs. A size and a shape of the pipes used in the end and/or the side part may vary. For example, some of the part(s) of the structure may be made of the pipe having different dimensions than other(s).

Referring now to Figure 1A, the floor structure comprises the first end part 102A and the second end part 102B, and the first side part 104A and the second side part 104B. The end and the side parts form a framework having substantially rectangular shape. A length of the first and the second end part is the same, as well as a length of the first and the second side parts. The length of the end parts may be shorter than the length of the side parts. The end parts form the first opposite sides of the frame structure, and the side parts form the second opposite sides of the frame structure that together form the rectangular shape as illustrated in Figure 1A.

Each end and side part comprises the first end 1O2A_E1, 1O2B_E1, 104A.E1, 104B_El and the second end 102A_E2, 102B_E2, 104A_E2, 104B_E2. Each end comprises the first and the second integral interlock element 106A, 106B. The first interlock elements 106A of the end parts 102A, 102B are configured to be coupled with the first interlock elements 106A of the side parts 104A, 104B. Respectively, the second interlock elements 106B of the end parts 102A, 102B are configured to be coupled with the second interlock elements 106B of the side parts 104A, 104B. Hence, each end of each part comprises, at least, two separate interlock elements.

The integral interlock element (also interlock element in this application) refers to a feature which is formed on/from the part. It may be made of the material of the part. In other words, it may not be a separate feature that is coupled with the part. As described above, the end and the side parts may be the steel pipes, and the interlock elements may be formed by a laser cutting, for example. The laser cutting enables very effective and accurate method for forming the different kind of the locking features on the parts.

Referring now to Figures 2A and 2B. Figure 2A illustrates the first end of the end parts 1O2A_E1, 1O2B_E1. The first and the second ends of the end part may be identical but mirror images from each other. Both the first and second end of the end parts 1O2A_E1, 102A_E2, 1O2B_E1, 102B_E2 comprise the first and the second interlock element 106A, 106B. Figure 2B illustrates the first end of the side parts 104A_El, 1O4B_E1. The first and the second ends of the side part may also be identical but mirror images from each other like the ends of the end parts. Both the first and second end of the side parts 104A_El, 104A_E2, 104B_El, 104B_E2 comprise the first and the second interlock element 106A, 106B.

Referring now to Figure 1A, the first end of the first end part 1O2A_E1 is configured to be coupled with the first end of the first side part 104A_El forming a first corner Cl, and the second end of the first end part 102A_E2 is configured to be coupled with the first end of the second side part 104B_El forming a second corner C2. The first end of the second end part 1O2B_E1 is configured to be coupled with the second end of the first side part 104A_E2 forming a third corner C3, and the second end of the second end part 102B_E2 is configured to be coupled with the second end of the second side part 104B_E2 forming a fourth corner C4. The first interlock elements of the end and side parts are coupled together, and also the second interlock elements of the end and side parts to form the floor structure. Hence, each end (corner) of the end and side parts is coupled together by at least two interlock elements.

Referring to Figure 2C which illustrates the ends of the end and side part that are coupled together. The end part is substantially perpendicular in relation to the side part when ends of the parts are coupled together by the interlock elements. In other words, an angle between the end and side part is substantially 90 degrees. The ends may overlap at least partly.

The above-mentioned structure is simple (less separate parts) but is still very strong. The two integrated interlock elements enable very strong connection between each end of the part. Hence, use of the separate fastening members may be minimized. The above-mentioned structure is scalable for the different types of the cars of the elevators.

In an embodiment, each end and side part 102A, 102B, 104A, 104B comprise an outer, an inner, a top and a bottom wall 1O2A_W1 - W4, 1O2B_W1 - W4, 104A_Wl - W4, 104B_Wl - W4 wherein the first interlock element 106A is arranged in the outer wall 1O2A_W1, 1O2B_W1, 104A_Wl, 104B_Wl and the second interlock element is arranged in the inner wall 102A_W2, 102B_W2, 104A_W2, 104B_W2 of the parts 102A, 102B, 104A, 104B. As described above, the parts may form the structure having rectangular shape, and the inner wall refers to the walls of the parts that are inside the rectangle, the outer walls refer to the walls that are outside of the rectangle and opposite to the inner walls. The top walls refer to the wall that is on the top of the structure, and the bottom wall refer to the walls that is under the structure. The top of the structure refers to the side of the structure, which is upwards in Figures 1A and IB, and the bottom side is downwards in the same Figures.

Referring to Figure IB, the first end part 102A comprises the outer wall 1O2A_W1, the inner wall 102A_W2, the top wall 102A_W3 and the bottom wall 102A_W4. The second end part 102B comprises the outer wall 1O2B_W1, the inner wall 102B_W2, the top wall 102B_W3 and the bottom wall 102B_W4. The first side part 104A comprises the outer wall 104A_Wl, the inner wall 104A_W2, the top wall 104A_W3 and the bottom wall 104A_W4. The second side part 104B comprises the outer wall 104B_Wl, the inner wall 104B_W2, the top wall 104B_W3 and the bottom wall 104B_W4.

Referring now to Figure 2A which illustrates the first end of the first and the second end part 1O2A_E1, 1O2B_E1 according to an embodiment. The first interlock element 106A is arranged in the outer wall of the end part 1O2A_W1, 1O2B_W1, and the second interlock element 106B is arranged in the inner wall of the end part 102A_W2, 102B_W2. As described above, the second end of the first and the second end part may be the mirror image from the first end, therefore the same principles may be valid also for the second end of the first and the second end parts. Referring now to Figure 2B, which illustrates the first end of the first and the second side part 104A_El, 1O4B_E1 according to an embodiment. The first interlock element 106A is arranged in the outer wall of the side part 104A_Wl, 104B_Wl, and the second interlock element 106B is arranged in the inner wall of the side part 104A_W2, 104B_W2. As described above, the second end of the first and the second side parts may be the mirror image from the first end, and therefore the same principles may be valid also for the second end of the first and the second side parts. Hence, the first and the second interlock elements are arranged in the opposite walls of each part in the first and the second end. This enables very strong and firm connection between the ends since the ends are connected from two distant points.

It is important to realize, that even though there is mentioned in this application that the ends of the end, side and middle parts may be the mirror images, it is not mandatory. There may be some dimensional and structural differences, for example. Therefore, the features in the ends may vary according to the scope of the embodiments described in this application.

Referring to Figure 2C, in an embodiment, the top walls of the end and the side parts 102A_W3, 102B_W3, 104A_W3, 104B_W3 are configured, at least partly, to overlap in the vicinity of the first and the second ends of the parts. Figure 2C illustrates the first end part 102A and the first side part 104A which are coupled together by the interlock elements 106A, 106B. The top wall of the side part 104A_W3 extends under the top wall of the first end part 102A_W3 forming the overlapped section between the first end part and the first side part at the end of the parts.

Referring now to Figure 2D, in an embodiment the bottom walls of the end and the side parts 102A_W4, 102B_W4, 104A_W4, 104B_W4 are configured, at least partly, to overlap in the vicinity of the first and the second ends. Figure 2D illustrates the first end part 102A and the first side part 104A which are coupled together by the interlock elements 106A, 106B such that the bottom walls W4 are visible and upwards. The bottom wall of the end part 102A_W4 extends under the bottom wall of the first side part 104A_W4 forming another overlapped section between the first end part and the first side part at the end of the parts.

In an embodiment, the end and the side part may be fasted together from one or more the overlapped sections by a separate fastening member. Figures 2C and 2D illustrate only one corner of the structure formed by the first end part and the first side part. Still the same principles are valid for all the other corners of the structure formed by the end and the side parts.

Referring to Figure IB, in an embodiment, the floor structure 100 further comprises at least one middle part 108 comprising a first and a second ends 1O8_E1, 108_E2 with a third integral interlock element 106C, wherein the middle part 108 is configured to be arranged between the first and the second side parts 104A, 104B, wherein the third interlock element 106C of the middle part 108 is configured to be coupled with a third interlock element 106C of the side part 104A, 104B arranged in the outer wall of the side part 104A_Wl, 104B_Wl. The floor structure 100 may comprise more than one middle part 108, it may comprise two middle parts 108, for example.

Referring now to Figure 3A which illustrates the first end of the middle part 1O8_E1. The second end of the middle part 108_E2 may be substantially identical with the first end but a mirror image. Therefore, the second end may have the same functionalities and features as described with the first end. The third interlock element 106C of the middle part 108 and the third interlock element 106C of the side parts 104A, 104B may comprise two locking features. The third interlock element 106C in the side parts 104A, 104B is configured to receive and hold the interlock elements of the middle part, in other words, the third interlock element 106C of the side parts 104A, 104B is a counterpart for the third interlock element 106C of the middle part 108. The third interlock element 106C in the side part 104A, 104B may be arranged in the outer wall of the side part 104A_Wl, 104B_Wl. This is illustrated in Figure 3C in which the third interlock element 106C of the middle part 108 is coupled with the third interlock element 106C of the side parts 104A, 104B.

In an embodiment, the middle part 108 further comprises a fourth interlock element 106D arranged in the first and the second ends 1O8_E1, 108_E2, wherein the fourth interlock element of the middle part 106C is configured to be coupled with a fourth interlock element of the side part 106C arranged in the inner wall of the side part 104A_W2, 104B_W2. Referring now to Figure 3A which illustrates the first end of the middle part 1O8_E1. The first and the second end of the middle part 1O8_E1, 108_E2 may comprise the fourth interlock element 106D. The fourth interlock element may comprise two locking features. Referring now to Figure 3B, the side part 104A, 104B may also comprise the fourth interlock element 106D configured to be coupled with the fourth interlock element 106D of the middle part 108. The fourth interlock element 106D in the side parts 104A, 104B may also comprise two locking features, as illustrated in Figure 3B, which may be arranged in the inner wall of the side part 104A_W2, 104B_W2.

Hence, the first and the second end of the middle part 1O8_E1, 108_E2 may comprise two interlock elements 106C, 106D configured to be coupled with the respective two interlock elements 106C, 106D of the side parts 104A, 104B. Each interlock element may comprise two locking features. This ensures that the middle partis firmly connected with the side parts and creates a strong support for the structure.

In an embodiment, illustrated in Figure IB and 3A, the middle part 108 comprises a first side, a second side, a top and a bottom walls 1O8_W1, 108_W2, 108_W3, 108_W4, wherein the third interlock element 106C is arranged in the side walls of the middle part 1O8_W1, 108_W2. Referring now to Figure 3A, the third interlock element 106C of the middle part 108 may comprise two locking features wherein one is arranged in the first side wall 1O8_W1, and other one in the second side wall 108_W2. Hence, both side walls of the middle part 1O8_W1, 108_W2 may comprise one locking feature of the third interlock element 106C.

Referring to Figure 3A, the fourth interlock element 106D is arranged in the side walls and/or the bottom wall of the middle part 1O8_W1, 108_W2, 108_W4. As described above, the fourth interlock element 106D of the middle part 108 may comprise two locking features where in one is arranged in the first side wall and the bottom wall of the middle part 1O8_W1, 108_W4, and another one is arranged in the second side wall and the bottom wall of the middle part 108_W2, 108_W4.

In an embodiment, the top wall of the middle part 108_W3 is configured, at least partly, to overlap with the top wall of the side part 104A_W3, 104B_W3. Referring to Figure 3C, the top wall of the middle part 108_W3 extends over the top wall of the side part 104A_W3, 104B_W3 in the vicinity of the first and the second end of the middle part 1O8_E1, 108_E2. In another embodiment, the bottom wall of the middle part 108_W4 is configured, at least partly, to overlap with the bottom wall of the side part 104A_W4, 104B_W4. Referring to Figure 3E, the bottom wall of the middle part 108_W4 extends inside the side part 104A, 104B and over the bottom wall of the side part 104A_W4, 104B_W4 in the vicinity of the first and the second end of the middle part 1O8_E1, 108_E2. The overlapped sections may be used for coupling the middle part and the side parts together by the separate fastening member.

Referring to Figure 2A, in an embodiment, the first and the second interlock element 106A, 106B in the end part 102A, 102B comprises a protrusion 112A, 112B extending towards the bottom wall of the end part 102A_W4, 102B_W4. The protrusion of the first interlock element 112A may be arranged in the outer wall 1O2A_W1, 1O2B_W1, and the protrusion of the second interlock element 112B may be arranged in the inner wall 102A_W2, 102B_W2. The first interlock element 106A of the side part 104A, 104B may also comprise a protrusion extending towards the top surface of the side part 104A_W3, 104B_W3. Then the first protrusions of the end and the side parts may extend opposite directions. In other words, the first interlock elements 106A form a hook kind of structures that can be coupled together as illustrated in Figure 2C.

Referring to Figure 2B, the protrusions 112 referred in this application may form a hook kind of structure having a cavity CA between the protrusion portion and a base part configured to receive a counterpart of the protrusion. Figure 2B illustrates the side part, and in this case the base part refers to the side part, or more specifically the outer wall of the side part 104A_Wl, 104B_Wl. Hence, when the counterpart is set into the cavity, the hook kind of structure formed by the protrusion prevents and/or limits the movement of the counterpart. The counterpart can only be moved in and out of the cavity, so basically it can move only in one direction. This principle may be valid for all the interlock elements of this application having the protrusion. Both the first interlock elements 106A in the end and side parts 102A, 102B, 104A, 104B maybe protrusions, and then the cavity of the one interlock element is set into the cavity of the other interlock element forming the connection as illustrated in Figure 2C, for example.

Referring now to Figure 2B, the second interlock element 106B in the side part 104A, 104B may comprise a slot (hole) configured to receive the protrusion of the second interlock element 106B of the end part 102A, 102B. In Figure 2C the second interlock element 106B of the end part 102A, 102B is coupled with the second interlock element 106B of the side part 104A, 104B, in other words, the protrusion is in the slot limiting movement of the parts in relation to each other.

Figure 3A illustrates an embodiment, in which the third interlock element 106C in the middle part 108 comprises a protrusion 112C extending towards the bottom wall of the middle part 108_W4. As described above, the first and the second end of the middle part may comprise two locking features, and these locking features may be the protrusions. The first protrusion 112C may be arranged in the first side wall of the middle part 1O8_W1, and the second protrusion 112C may be arranged in the second side wall of the middle part 108_W2 as illustrated in Figure 3A. Hence both the side walls of the middle part may comprise the protrusion extending towards the bottom wall of the middle part. The third interlock element 106C in the side part 104A, 104B may comprise a slot(s) configured to receive the protrusions 112C. As described above, the slot may be arranged in the outer wall of the side part 104A, 104B. A connection of the third interlock elements of the middle part and the side part is presented in Figure 3C in which the protrusion(s) arranged in the middle part is assembled into the slot(s) of the side part, and the protrusions lock against the outer wall of the side part in the assembled state. The assembled state refers to the situation in which the parts are coupled together according to the inventions.

Referring now to Figure 3B, the fourth interlock 106D element in the side part 104A, 104B comprises a protrusion 112D extending towards the top wall of the side parts 104A_W3, 104B_W3. The protrusion 112D may be arranged in the bottom wall of the side part 104A_W4, 14B_W4 extending towards the top wall 104A_W3, 104B_W3. The protrusion 112D may be in connection with the inner wall of the side part 104A_W2, 104_W2, and/or formed from the inner wall. As described above, the fourth interlock element may comprise two locking features. Hence, there may be two protrusion 112D in the side part 104A, 104B. Referring now to Figure 3A, the fourth interlock element 106D of the middle part 108 may comprise a slot(s) configured to receive the protrusion 112D of the fourth interlock element 106D of the side part 104A, 104B. If there are two protrusion 112D in the side part 104A, 104B, the middle part may also comprise two slots as illustrated in Figures 3A and 3B. One slot may be arranged in the first side wall and the bottom wall of the middle part 1O8_W1, 108_W4, and another one may be arranged in the second side wall and the bottom wall of the middle part 108_W2, 108_W4.

In an embodiment, the first interlock element 106A is in the vicinity of the bottom wall of the end and the side parts 102A_W4, 102B_W4, 104A_W4, 104B_W4, and the second interlock element 106B is in the vicinity of the top wall of the end and the side parts 102A_W3, 102B_W3, 104A_W3, 104B_W3. Hence, the first and the second interlock elements 106A, 106B in each corner Cl, C2, C3, C4 are arranged to be in the different position in a height direction H of the floor structure. This means that the interlock elements in the corner are spaced apart from each other in the height direction which makes the connection of the end and side parts strong and robust.

Referring to Figure 2C, the end and side parts 102A, 102B, 104A, 104B may be coupled together with the first and the second interlock elements 106A, 106B in each corner Cl, C2, C3, C4 such that the ends of the end and side part (for example the first end of the first end part 1O2A_E1 and the first end of the first side part 104A_El) are set together in the height direction H of the floor structure 100. Then the first interlock elements 106A locks together, and the second interlock elements 106B locks together. For example, the protrusions of the first interlock elements 106A in the end and the side part 102A; 102B, 104A, 104B lock together, and protrusion of the second interlock element 106B in the end parts 102A, 102B locks together with the slots of the second interlock element 106B of the side part 104A, 104B.

Hence, when the ends of the end and side parts are coupled together, the parts are moved in the height direction. This is the only direction in which the parts can move when they are coupled together by the interlock elements. The interlock elements prevent the movement in other directions. In addition, the top walls of the end and the side parts 102A_W3, 102B_W3, 104A_W3, 104B_W3, and further the bottom walls of the end and side parts 102A_W4, 102B_W4, 104A_W4, 104B_W4 are configured to overlap. The overlapped sections of the end and the side part (in the top and the bottom walls) may be fastened together by the separate fastening member like a screw, for example. The fastening member prevents the movement of the end and side parts also in the height direction. Then each corner formed by the ends of the end and side part are firmly connected together by the interlock elements and further by the separate fastening member.

Referring to Figures 3B, 3C, 3D and 3E, the middle part 108 is coupled with the side parts 104A, 104B such that the end of the middle part 1O8_E1, 108_E2 goes partly inside the side part 104A, 104B. The side part 104A, 104B may comprise an opening 116 configured to receive one end of the middle part 1O8_E1, 108_E2 as illustrated in Figure 3B. When assembling the middle part 108 with the side parts 104A, 104B, the one end of middle part 1O8_E1, 108E2 is moved perpendicularly inside the opening 116 of the side part 104A, 104B such that the third interlock element 106C (protrusion) of the middle part 108 goes into the third interlock element 106C (slot) of the side part 104A, 104B. Then the middle part 108 is moved downwards such that the third interlock element are coupled together, and respectively fourth interlock elements are coupled together as illustrated in Figures 3C and 3D. The middle part 108 can then move in relation to the side part 104A, 104B only in height direction H of the floor structure, the interlock elements prevent the movement in other directions. The top walls of the middle part 108_W3 and the side part 104A_W3, 104B_W3, and the bottom walls of the middle part 108_W4 and the side part 104A_W4, 104B_W4 are configured to be overlapped when the middle and the side parts are coupled together. The overlapped sections of the middle and the side parts may be fastened together by the separate fastening member same way like in the corners of the floor structure. This prevents the movement of the middle and the side parts also in the height direction, and together with the interlock elements, it forms very strong connection that supports the floor structure.

Referring now to Figure 4A, in an embodiment, the floor structure 100 further comprises a floor plate 114 configured to be arranged in a top of the floor structure 100 formed, at least, by the end and the side parts 102A, 102B, 104A, 104B, wherein the floor plate 114 comprises at least one fifth interlock element 106E configured to be coupled with a fifth interlock element of the side part 106E arranged in the top wall of the side part 104A_W3, 104B_W3. The floor plate may be made of a sheet metal, for example. It may also comprise stiffening elements, for example. As described in Figure 4A, the floor plate 114 is configured to be assembled on the top of the floor frame structure 100. The top side/surface of the structure is upwards in Figures 1A, IB and 4A, for example. The fifth interlock element 106E in the floor plate 114 may be arranged in the vicinity of an edge of the plate 114 as illustrated in Figure 4B. The overall dimension of the plate 114 may be a little smaller than the overall dimension of the floor structure 100. Then each edge of the plate 114 is above the top wall of the end and/or the side parts 102A_W3, 102B_W3, 104A_W3, 104B_W3. The top wall of the side parts 104A, 104B may also comprise one or more fifth interlock elements 106E that are counterparts for the fifth interlock elements 106E of the floor plate 114. This is illustrated in Figure 2C, for example. Hence, the fifth interlock element(s) 106E in the side edge(s) of the floor plate 114 can be coupled with the fifth interlock element(s) 106E of the top wall of the side part 104A_W3, 104B_W3 when the plate 114 is assembled on the top of the frame 100.

In an embodiment, illustrated in Figure 4B, the fifth interlock element 106E of the floor plate 114 comprises a protrusion 112E extending in a longitudinal direction of the floor panel/structure L. The fifth interlock element 106E of the side parts 104A, 104B may comprise a slot configured to receive the protrusion 112E of the fifth interlock element 106E of the floor plate 114.

Referring to Figure 4C, the floor plate 114 may be assembled with the floor structure such that the plate is set on the top of the floor structure and the fifth interlock elements of the floor plate and the side parts are aligned. Then the fifth interlock element (protrusion) of the floor plate goes into the fifth interlock element (slot) of the top wall of the side part. The plate may be moved in the longitudinal direction L of the floor plate 114 such that the top wall of the side part goes inside the cavity of the protrusion. Then the fifth interlock elements are coupled together limiting the movement of the floor plate in relation to the floor structure. In an embodiment, the floor plate may be fastened with the floor structure also with separate fastening members.

The separate fastening member referred in this application may be mechanical and/or chemical fastener like a screw and/or a glue, for example.

The floor structure of the invention solves many drawbacks of the known solutions. Because of the integral interlock elements, the less separate fastening members are needed in the assembly, and hence the manufacturing of the floor structure is cheaper and faster. The integral interlock elements in the floor structure are shaped and located such that the structure is very strong and robust. The floor structure provides a platform solution for the floor assembly of the car that is suitable for the different types of the elevators. The floor structure is modular and scalable making possible to adapt it to the different kind of size requirements. The floor structure is also possible to adapt to meet the requirements of the different kind of the elevators. The floor structure according to the invention may be used with an isolated and/or integrated sling, for example. The floor structure platform is used as a base, and the specific features may be added according to the needs. For example, the floor structure may further comprise some special components according to the purpose of the use.

It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.