CN111470399B

CN111470399B - Door sill for elevator door

Info

Publication number: CN111470399B
Application number: CN202010072508.8A
Authority: CN
Inventors: 焦尔焦尼·保罗
Original assignee: Wittur Holding GmbH
Current assignee: Wittur Holding GmbH
Priority date: 2019-01-24
Filing date: 2020-01-21
Publication date: 2024-02-20
Anticipated expiration: 2040-01-21
Also published as: PL3747819T3; IT201900001073A1; EP3747819A1; CN111470399A; EP3747819B1; ES2897495T3

Abstract

A door sill (1) for a door of an elevator, comprising: a first profiling element (2) extending mainly in the longitudinal direction and comprising a first upper projection (21) and a second upper projection (22) separated by a groove (23) open in the upward direction; a second profiling element (3) extending mainly in the longitudinal direction and defining a first groove (31), the second profiling element (3) being engagement-fitted on the first profiling element (2) in such a way that the first upper projection (21) engages the first groove (31); a third profiling element (4) extending mainly in the longitudinal direction and defining a second groove (41), the third profiling element (4) being engagement-fitted on the first profiling element (2) in such a way that the second upper projection (22) engages the second groove (41), the second profiling element (3) and the third profiling element (4) penetrating partly the groove (23) thereby defining a guide for the sliding of the door leaf (100) of the door.

Description

Door sill for elevator door

Technical Field

The present invention relates to a door sill for a door of an elevator.

Background

In the prior art, a door for an elevator comprises one or more door leaves provided with a slider below, which slider slides in a groove or recess formed in the door sill of the door. The presence of the slider ensures a guided sliding movement when opening and closing.

From document EP 0803463 a threshold for landing doors of floors is known, comprising:

a steel profiled element, suitably corrugated, to define at least one recess for the sliding of the door leaf provided with a slider or roller;

an aluminum upper profiling member having an opposite shape relative to the lower profiling member and being engagement fitted over the lower profiling member.

The choice of material for the profiled element (i.e. steel for the lower core and aluminum for the top cap) has its drawbacks, although improved in terms of weight and cost with respect to previous solutions.

For example, the slider has a plastic portion that is prone to wear, so it needs to be replaced periodically.

Since the slider is fixed to the door leaf, maintenance is long and expensive.

The component of the threshold EP 0803463 also requires high production costs, since the plates or metal profiles provided with a number of bends need to be produced in different materials.

Disclosure of Invention

In this case, the underlying technical task of the invention is to propose a door sill for an elevator door that overcomes the drawbacks of the prior art described above.

In particular, it is an object of the invention to provide a door sill for an elevator formed from components that are easier to manufacture.

Another object of the invention is to propose a door sill for an elevator with a lower constructional complexity, which translates into lower maintenance costs and greater reliability.

The technical task and the specific objects stated are basically achieved by a threshold for a door of an elevator, comprising: a first profiling element extending mainly in the longitudinal direction and comprising a first upper projection and a second upper projection separated by a groove open in the upward direction, the first upper projection and the second upper projection having corresponding cross-sectional narrowing obtained by partial recesses of the vertical wall of the corresponding upper projection; a second profiling element extending mainly in the longitudinal direction and defining a first groove, said second profiling element being engagement-fitted on the first profiling element in such a way that the first upper projection engages the first groove; a third profiled element extending mainly in the longitudinal direction and defining a second groove, said third profiled element being engagement-fitted on the first profiled element in such a way that the second upper projection engages the second groove, said second profiled element and said third profiled element penetrating partly through said groove, thereby defining a guide for the sliding of the door leaf of the door.

Initially, the second profiling element has two protrusions which engage in partial recesses of the cross-section narrowing fitted to the first upper extension, and the third profiling element has two protrusions which engage in partial recesses of the cross-section narrowing fitted to the second upper extension.

Preferably, the second profiling element and the third profiling element are identical, but are applied to the first profiling element mirrored with respect to the groove.

In particular, the second profiling element and the third profiling element each have a lip penetrating the groove, which is shaped to accommodate the wear element or to define a curved protrusion in the groove.

Preferably, the first profiling element is made of one of the following materials: plastic, steel, aluminum.

The second profiling element and the third profiling element are made of the same material which can be selected from plastics, steel, aluminium.

Preferably, the second profiling element and the third profiling element consist of two extruded plastic bodies.

In particular, each partial recess defines an angle comprised between 10 ° and 170 °.

Preferably, the recess is laterally delimited by a first vertical wall of the first upper projection and a second vertical wall of the second upper projection.

According to a first embodiment, the recess is delimited underneath by a horizontal base for the connection between the first vertical wall and the second vertical wall. In particular, the horizontal base is substantially flat.

In this first embodiment, the first and second vertical walls have corresponding protrusions protruding inward of the recess.

According to a second embodiment, the first vertical wall and the second vertical wall respectively terminate at edges folded towards the recess.

Preferably, the edge defines a downwardly tapering or narrowing of the groove.

Preferably, the recess is delimited underneath by a portion of the first profiling element.

In all embodiments, the first profiling element further comprises a first lower projection and a second lower projection separated by a further channel or recess.

Preferably, the further channel has a substantially T-shaped cross-section.

Preferably, the threshold further comprises a bracket having at least a first portion fixable to the wall of the elevator hoistway and a second portion supporting the first profiled element.

The profiling element is fixed to the second part of the bracket by fastening means accommodated in said further channel.

Drawings

Additional features and advantages of the invention will become more apparent from the approximate, and therefore non-limiting, description of a preferred, but not exclusive, embodiment of a door sill for an elevator door as illustrated in the accompanying drawings, in which:

fig. 1 presents in a sectional view a door sill for a door of an elevator according to the invention;

fig. 2, 3, 4, 5, 6 and 7 show in cross-section some parts of the rocker of fig. 1 (a lower profiling element and two upper profiling elements), wherein different embodiments of the upper profiling elements and the lower profiling elements are combined;

fig. 8 shows a first embodiment of the down-pressure element used in fig. 5, 6 and 7 in a sectional view;

fig. 9 shows a second embodiment of the down-pressure element used in fig. 1, 2, 3 and 4 in a sectional view;

fig. 10 shows a first embodiment of the profiling-up element used in fig. 1, 2 and 5 in a sectional view;

fig. 11 shows a second embodiment of the profiling element used in fig. 3 and 6 in a sectional view;

fig. 12 shows a third embodiment of the profiling element used in fig. 4 and 7 in a sectional view;

fig. 13 shows a threshold according to the invention for a landing door with two door leaves in a sectional view.

Detailed Description

Referring to the drawings, numeral 1 denotes a threshold for a landing door of an elevator.

The rocker 1 includes:

a first profiling element 2, hereinafter also referred to as "profiling element", which extends mainly in the longitudinal direction;

the second profiling element 3 and the third profiling element 4, hereinafter also referred to as "profiling elements", extend mainly in the same longitudinal direction.

The first profiling element 2 comprises a first upper projection 21 and a second upper projection 22 separated by a recess 23 which is open in the upward direction for sliding of the door leaf 100 of the landing door (as will be better understood below).

The first profiling element 2 further comprises a first lower projection 24 and a second lower projection 25 separated by a further channel or recess 26. Preferably, the further channel 26 has a substantially T-shaped cross-section.

Preferably, the first profiling element 2 is constituted by a plate-like body which is bent and shaped to define the above-defined protrusions and recesses.

The threshold 1 is fixed to the wall 200 of the elevator hoistway by means of the bracket 5.

The bracket 5 includes at least: a first portion 51 securable to the wall 200; and a second portion 52, which is substantially 90 ° with respect to the first portion 51, which supports the first profiling element 2.

In particular, the first profiled element 2 is fixed to the second portion 52 of the bracket 5 by fastening means 6 partly accommodated in the further channel 26. In the embodiments described and illustrated herein, the fastening means 6 comprise a bolt coupled to a nut.

The holder 5 further comprises a third portion 53, which third portion 53 extends to the sides of the profiling elements 2, 3, 4 to protect these profiling elements. The third portion 53 extends from the second portion 52 at about 90 deg. (and thus is parallel to the first portion 1).

In the embodiments described and illustrated herein, the first upper extension 21 and the second upper extension 22 have corresponding cross-sectional narrowing portions 210, 220.

Preferably, each cross-section narrowing 210, 220 is obtained by a partial recess of the vertical wall 211, 212, 221, 222 of the corresponding upper extension 21, 22.

In particular, each partial recess defines an angle α comprised between 10 ° and 170 °.

The recess 23 of the first profiling element 2 is delimited in the transverse direction by a first vertical wall 211 of the first upper extension 21 and a second vertical wall 221 of the second upper extension 22.

According to a first embodiment of the first profiling element shown in fig. 8, the recess 23 is delimited underneath by a horizontal base 223 for the connection between the first vertical wall 211 and the second vertical wall 221.

The horizontal base 223 also defines above it a further channel 26 of the first profiled element 2.

Preferably, the horizontal base 223 is substantially flat.

Both the first vertical wall 211 and the second vertical wall 221 have protrusions 2110, 2210 protruding inward of the groove 23.

In particular, the protrusions 2110, 2210 are angled in a manner that tapers or narrows the groove 23 downward (i.e., in the direction of the other channel 26).

According to a second embodiment of the first profiling element 2 shown in fig. 9, the first and the second vertical wall 211, 221 respectively end at edges 211a,221a folded towards the recess 23. The edges 211a,221a do not engage, but rather define a downwardly tapering or narrowing of the groove 23, i.e. proceeding in the direction of the other channel 26.

In this embodiment, the recess 23 is delimited underneath by a horizontal base 223, which separates the recess from the further channel 26 underneath.

Preferably, the horizontal base 223 has a partial recess 2230 that protrudes into the other channel 26.

The profiling elements (i.e. the second profiling element 3 and the third profiling element 4) are identical but are applied to the first profiling element 2 mirrored with respect to the groove 23.

In particular, the second profiling element 3 defines a first groove 31 and is engagement-fitted on the first profiling element 2 in such a way that the first upper projection 21 engages the first groove 31.

The second profiling element 3 has two projections 32, 33 which engage in partial recesses of the cross-section narrowing 210 of the first upper projection 21.

The third profiling element 4 defines a second groove 41 and is engagement-fitted on the first profiling element 2 in such a way that the second upper extension 22 engages the second groove 41. The third profiling element 4 has two projections 42, 43 which fit into partial recesses of the section narrowing 220 of the second upper extension 22.

Advantageously, the second profiling element 3 and the third profiling element 4 partly penetrate the groove 23 of the first profiling element 2, thereby defining a guide for the sliding of the door leaf 100.

Advantageously, the first profiling element 2 is made of one of the following materials: plastic, steel, aluminum.

Preferably, a plastic material is associated with the first embodiment of the down-pressing element 2 (fig. 8).

Preferably steel and aluminium are associated with the second embodiment of the down-pressing element 2 (fig. 9).

The profiling elements 3, 4 can also be made of one of the following materials: plastic, steel, aluminum.

Preferably, aluminum is associated with the first embodiment of the upshaped element (fig. 10).

Preferably, steel is associated with the second embodiment of the profiling element (fig. 11).

Preferably, a plastic material is associated with the third embodiment of the profiling-up element (fig. 12).

The second profiling element 3 and the third profiling element 4 each have lips 34, 44 penetrating the groove 23.

According to a first embodiment of the profiled element shown in fig. 10, the lip 44 has a cavity with part of the curved section, indicated by the numeral 440.

Preferably, the cavity 440 formed in the lip 44 is a cylindrical portion and can accommodate the wear element 7 made of plastic.

According to a second embodiment of the profiling-up element shown in fig. 11, the lip 44 defines a holding opening 441 for the wear element 7 made of plastic.

According to a third embodiment of the profiling-up element shown in fig. 12, the lip 44 has a curved protrusion 442 in the groove 23.

In practice, the profiling-up element may integrate the plastic slider (fig. 10 and 11) or inherently define its function with its shape (fig. 12, where the curvilinear projection is defined by a lip).

The coupling of the lower profiling element 2 made of plastic and the upper profiling elements 3, 4 made of plastic is also particularly advantageous for the following reasons.

First, these profiling elements can be produced by extrusion. The plastic materials selected for the lower and upper profiled elements may be the same or different.

Furthermore, the curved protrusion formed in the lip avoids having to insert a slider.

The characteristics of the threshold of the landing door for an elevator according to the invention, as well as the advantages, appear clearly from the above description.

The engagement assembly of the upper profiled element on the lower profiled element allows for easy modernization of existing systems without having to replace the entire threshold. In fact, it is sufficient to remove the profiling element and replace it, which avoids long and complicated disassembly operations. In this case the old profiling element can be replaced with an upper profiling element with a greater extension, i.e. with an increased edge/lip that reduces the sliding slit of the door leaf.

The combined joint fitting structure also allows simplifying the mounting step of the system during which the bumper is inserted onto the lower profiling element, which is then removed at the end of the mounting to leave room for the joint fitting of the upper profiling element.

The particular shape of the threshold presented here, together with the edge or projection of the lower profiled element tapering the groove and the inner lip of the upper profiled element integrating or "simulating" the wear part of the slider, allows to reduce the width of the groove from about 10-12mm to 5mm. The reduced groove has the following advantages: the problems of tripping, wheelchairs or walkers provided with wheels, entry of stretchers, accidental dropping of small objects, etc. are limited or completely avoided.

Furthermore, by making an up-profiled element of plastic and shaping the lip to obtain a curved extension, it is possible to avoid the use of a sliding block for the sliding of the door leaf. Obviously, this option reduces the number of parts, simplifying the production of the threshold and its maintenance.

Claims

1. A door sill (1) for a door of an elevator, comprising:

a first profiling element (2) extending mainly in the longitudinal direction and comprising a first upper projection (21) and a second upper projection (22) separated by a groove (23) open in the upward direction, the first upper projection (21) having a cross-section narrowing (210) obtained by a partial recess of two first vertical walls (211, 212) of the first upper projection (21), and the second upper projection (22) having a cross-section narrowing (220) obtained by a partial recess of two second vertical walls (221, 222) of the second upper projection (22);

-a second profiling element (3) extending mainly in the longitudinal direction and defining a first groove (31), the second profiling element (3) being engagement-fitted on the first profiling element (2) in such a way that the first upper projection (21) engages the first groove (31);

a third profiling element (4) extending mainly in the longitudinal direction and defining a second groove (41), the third profiling element (4) being engagement-fitted on the first profiling element (2) in such a way that the second upper projection (22) engages the second groove (41), the second profiling element (3) and the third profiling element (4) penetrating partly the groove (23) defining a guide for the sliding of the door leaf (100) of the door,

wherein the second profiling element has two protrusions (32, 33) which engage in the partial recesses of the section narrowing (210) of the first upper projection (21), and the third profiling element (4) has two protrusions (42, 43) which engage in the partial recesses of the section narrowing (220) of the second upper projection (22),

the first of the two first vertical walls (211, 212) adjacent to the groove (23) and the second of the two second vertical walls (221, 222) adjacent to the groove (23) have corresponding protrusions (2110, 2210) projecting towards the inside of the groove (23) or respectively terminate in edges (211 a,221 a) folded towards the groove (23).

2. The threshold (1) according to claim 1, wherein the second profiled element (3) and the third profiled element (4) are identical but are applied to the first profiled element (2) mirrored with respect to the recess (23).

3. The threshold (1) according to claim 1 or 2, wherein the second profiled element (3) and the third profiled element (4) each have a lip penetrating the recess (23), the lips being shaped to accommodate a wear element (7) or to define a curvilinear projection (442) in the recess (23).

4. The threshold (1) according to claim 1 or 2, wherein:

the first profiling element (2) is made of one of the following materials: plastics, steel, aluminum;

the second profiling element (3) and the third profiling element (4) are made of the same material which can be selected from plastics, steel, aluminum.

5. The rocker (1) according to claim 1 or 2, wherein the second profiled element (3) and the third profiled element (4) consist of two extruded plastic bodies.

6. A threshold (1) according to claim 1 or 2, wherein each of said partial recesses defines an angle (a) comprised between 10 ° and 170 °.

7. The rocker (1) according to claim 1 or 2, wherein the recess (23) is delimited laterally by a first vertical wall (211) of the first upper extension (21) and a second vertical wall (221) of the second upper extension (22).

8. The threshold (1) of claim 7, wherein the recess (23) is delimited underneath by a horizontal base (223) for the connection between the first vertical wall (211) and the second vertical wall (221).

9. The threshold (1) according to claim 1, wherein the edge (211 a,221 a) defines a downward tapering or narrowing of the groove (23).

10. A threshold (1) according to claim 9, wherein the recess (23) is delimited underneath by a portion of the first profiled element (2).

11. A rocker (1) according to claim 1 or 2, wherein the first profiled element (2) further comprises a first lower projection (24) and a second lower projection (25) separated by a further channel (26).

12. The threshold (1) according to claim 11, further comprising a bracket (5) having at least a first portion (51) fixable to a wall (200) of an elevator hoistway and a second portion (52) supporting the first profiled element (2).

13. The rocker (1) according to claim 12, wherein the first profiled element (2) is fixed to the second portion (52) of the bracket (5) by fastening means (6) accommodated in the further channel (26).