EP2305593A1 - Lift foot guard - Google Patents

Lift foot guard Download PDF

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Publication number
EP2305593A1
EP2305593A1 EP09382192A EP09382192A EP2305593A1 EP 2305593 A1 EP2305593 A1 EP 2305593A1 EP 09382192 A EP09382192 A EP 09382192A EP 09382192 A EP09382192 A EP 09382192A EP 2305593 A1 EP2305593 A1 EP 2305593A1
Authority
EP
European Patent Office
Prior art keywords
plate
foot guard
slots
apron
lift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09382192A
Other languages
German (de)
French (fr)
Other versions
EP2305593B1 (en
Inventor
Antonio Borreguero Gil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Elevator Manufacturing Spain SL
Original Assignee
ThyssenKrupp Elevator Manufacturing Spain SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41647272&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2305593(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ThyssenKrupp Elevator Manufacturing Spain SL filed Critical ThyssenKrupp Elevator Manufacturing Spain SL
Priority to PT09382192T priority Critical patent/PT2305593E/en
Priority to ES09382192T priority patent/ES2382109T3/en
Priority to EP09382192A priority patent/EP2305593B1/en
Priority to AT09382192T priority patent/ATE549288T1/en
Publication of EP2305593A1 publication Critical patent/EP2305593A1/en
Application granted granted Critical
Publication of EP2305593B1 publication Critical patent/EP2305593B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • B66B13/28—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between car or cage and wells
    • B66B13/285—Toe guards or apron devices

Definitions

  • the purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • the foot guard Due to its special configuration, the foot guard returns to its resting position once the lift cabin has moved once more, preventing blockage at any time, in addition to preventing injury to operators or passengers who could be trapped by said foot guard.
  • Lift foot guards are known in the state of the art which prevent operators and passengers from falling into the lift shaft in the event of lift breakdown or when the lift remains trapped between two floors.
  • One such lift guard of this type is that of international patent application WO2005/092774 for a lift foot guard provided with studs which slide through parallel and vertical slots of an apron parallel to said foot guard and affixed to the lift cabin.
  • This invention resolves all the previous disadvantages by providing a lift foot guard which returns to its resting position once the lift cabin continues its movement again, preventing blocking at any time, in addition to preventing any harm coming to operators or passengers who might remain trapped by said foot guard, without the need for any auxiliary safety or guiding elements.
  • the purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • the foot guard comprises a lower plate which is displaced in respect of the apron affixed to the lift cabin as a result of two studs solid to the apron through which two slots present in the plate slide.
  • the slots present in the plate are formed in such a way that they permit the rotation of the plate with respect to at least one axis perpendicular to the plate, and coinciding with one of the apron studs, and as a result when the foot guard makes contact with any obstacle situated in a decentralised position with respect to the centre of the lower plate, this lower plate rotates in respect of the stud furthest from the obstacle, as there is no overturning torque due to the geometry of the slots, and thus the foot guard is prevented from imprisoning the obstacle.
  • this lower plate displaces vertically with the slots, following the rectilinear trajectory marked by the studs.
  • the lower plate falls, through gravity, to a resting position, due to the fact that there is no overturning torque which might block the lower plate.
  • the slots present in the lower plate may be arranged on the apron affixed to the lift cabin, with the studs in this case being arranged in the lower plate, as the relative movements between both elements do not vary.
  • the purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • the foot guard comprises a lower plate (1) which is displaced in respect of the apron (2) affixed to the lift cabin (3) as a result of two studs (2.1) solid to the apron (2) through which two slots slide(1.1)present in the plate (1).
  • Each of the studs (2.1) are joined to the apron (2) by means of a sliding plate (4) situated between the lower plate (1) and the apron (2) and affixed to this by fixation means (5), with these sliding plates (4) being provided with a reinforcement (4.1) which stiffens the foot guard.
  • the slots (1.1) present in the plate (1) are provided with a growing width, in this case in the descending direction of the plate (1), thus when the lower plate (1) makes contact with any obstacle (6) situated in a decentred position with respect to the centre of the lower plate (1), this (1) rotates with respect to the stud (2.1) of the apron (2) furthest from the obstacle (6).
  • the slots (1.1) may have a triangular form as is shown in the figures, or with the side closest to the opposite stud (2.1) having a curved form.
  • One of the sides of the slots (1.1) is vertical so that when the obstacle is centred with the lower plate (1), this (1) is vertically displaced, with the slots (1.1) following a vertical rectilinear trajectory.
  • the slots (2.2) are arranged on the apron (2) affixed to the lift cabin (3) and are provided with a growing width in the upward direction of the plate(1) with the studs (1.2) in this case being arranged on the lower plate(1).

Abstract

Lift foot guard which comprises a lower plate (1) which is displaced with respect to an apron (2) affixed to the lift cabin (3) due to two studs (2.1,1.2) solid to the apron (2) or the plate (1) through which two slots (1.1,2.2) present in the plate (1) or in the apron (2) respectively slide. The slots (1.1) present a form such that they permit rotation of the plate (1) with respect to at least one axis perpendicular to the plate (1) and coinciding with one of the studs (2) when the lower plate (1) enters into contact with an obstacle (6).

Description

    OBJECT OF THE INVENTION
  • The purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • Due to its special configuration, the foot guard returns to its resting position once the lift cabin has moved once more, preventing blockage at any time, in addition to preventing injury to operators or passengers who could be trapped by said foot guard.
    • BACKGROUND TO THE INVENTION
  • Lift foot guards are known in the state of the art which prevent operators and passengers from falling into the lift shaft in the event of lift breakdown or when the lift remains trapped between two floors.
  • One such lift guard of this type is that of international patent application WO2005/092774 for a lift foot guard provided with studs which slide through parallel and vertical slots of an apron parallel to said foot guard and affixed to the lift cabin.
  • The previous systems require linear bearings present in said slots for ensuring the correct guidance thereof.
  • This permits the foot guard to stop the cabin as a safety measure when it enters into contact with the bottom of the lift shaft. Nevertheless, when the cabin moves upwards again, and the foot guard should occupy a resting position, there are occasions on which it sticks, due to the fact that striking the bottom of the lift shaft has caused misalignment of the studs with respect to the parallel slots, which blocks the foot guard and causes this lift's safety system to malfunction.
  • Furthermore, in the previous systems, it is necessary to include an electrical contact which informs the lift's safety system of the malfunction.
  • In addition, there are occasions when the operator present in the lift shaft could be struck or trapped by the foot guard in the event of malfunction, or in the event that the lift cabin suddenly starts to move.
  • This invention resolves all the previous disadvantages by providing a lift foot guard which returns to its resting position once the lift cabin continues its movement again, preventing blocking at any time, in addition to preventing any harm coming to operators or passengers who might remain trapped by said foot guard, without the need for any auxiliary safety or guiding elements.
    • DESCRIPTION OF THE INVENTION
  • The purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • The foot guard comprises a lower plate which is displaced in respect of the apron affixed to the lift cabin as a result of two studs solid to the apron through which two slots present in the plate slide.
  • The slots present in the plate are formed in such a way that they permit the rotation of the plate with respect to at least one axis perpendicular to the plate, and coinciding with one of the apron studs, and as a result when the foot guard makes contact with any obstacle situated in a decentralised position with respect to the centre of the lower plate, this lower plate rotates in respect of the stud furthest from the obstacle, as there is no overturning torque due to the geometry of the slots, and thus the foot guard is prevented from imprisoning the obstacle.
  • When the obstacle is centred with the lower plate, this lower plate displaces vertically with the slots, following the rectilinear trajectory marked by the studs.
  • Once the obstacle has been removed, the lower plate falls, through gravity, to a resting position, due to the fact that there is no overturning torque which might block the lower plate.
  • The slots present in the lower plate may be arranged on the apron affixed to the lift cabin, with the studs in this case being arranged in the lower plate, as the relative movements between both elements do not vary.
    • DESCRIPTION OF THE DRAWINGS
  • The present descriptive report is complemented by a set of plans illustrating a preferred embodiment of the invention, but which is in no way restrictive.
    • Figure 1 shows an upright view of an embodiment of a foot guard for a lift in the present invention in its resting position.
    • Figure 2 shows a lateral upright view of the foot guard for a lift indicated in Figure 1.
    • Figure 3 shows an upright view of an embodiment of a foot guard for a lift in the present invention when the foot guard contacts with a decentred obstacle.
    • Figure 4 shows an upright view of an embodiment of a foot guard for a lift in the present invention when the foot guard contacts with a centred obstacle.
    PREFERRED EMBODIMENT OF THE INVENTION
  • In the light of the foregoing, the purpose of this invention is a lift foot guard which slides in respect of an apron affixed to the lift cabin when it enters into contact with an obstacle.
  • In a first example of an embodiment, the foot guard comprises a lower plate (1) which is displaced in respect of the apron (2) affixed to the lift cabin (3) as a result of two studs (2.1) solid to the apron (2) through which two slots slide(1.1)present in the plate (1).
  • Each of the studs (2.1) are joined to the apron (2) by means of a sliding plate (4) situated between the lower plate (1) and the apron (2) and affixed to this by fixation means (5), with these sliding plates (4) being provided with a reinforcement (4.1) which stiffens the foot guard.
  • The slots (1.1) present in the plate (1) are provided with a growing width, in this case in the descending direction of the plate (1), thus when the lower plate (1) makes contact with any obstacle (6) situated in a decentred position with respect to the centre of the lower plate (1), this (1) rotates with respect to the stud (2.1) of the apron (2) furthest from the obstacle (6).
  • The slots (1.1) may have a triangular form as is shown in the figures, or with the side closest to the opposite stud (2.1) having a curved form.
  • One of the sides of the slots (1.1) is vertical so that when the obstacle is centred with the lower plate (1), this (1) is vertically displaced, with the slots (1.1) following a vertical rectilinear trajectory.
  • In a second example of an embodiment the slots (2.2) are arranged on the apron (2) affixed to the lift cabin (3) and are provided with a growing width in the upward direction of the plate(1) with the studs (1.2) in this case being arranged on the lower plate(1).
  • The essential nature of this invention is not altered by any variations in materials, form, size and arrangement of its component elements, which are described in a non-restrictive manner, with this being sufficient to proceed to its reproduction by an expert.

Claims (10)

1. Lift foot guard which comprises a lower plate (1) which is displaced with respect to an apron (2) affixed to the lift cabin (3) due to two studs (2.1, 1.2) solid to the apron (2) or the plate (1) through which two slots (1.1, 2.2) present in the plate (1) or in the apron (2) respectively slide, characterised because the slots (1.1) present a form such that they permit rotation of the plate (1)with respect to at least one axis perpendicular to the plate (1) and coinciding with one of the studs (2) when the lower plate (1) enters into contact with an obstacle (6).
2. Lift foot guard according to claim 1 characterised in that the slots (1.1) present in the plate (1) are provided with a growing width.
3. Lift foot guard according to claim 2 characterised in that the slots (1.1) present in the plate(1) are provided with a growing width in the downward direction of the plate (1), the studs (2.1) are solid to the apron (2) and the slots (1.1) are present in the plate (1).
3. Lift foot guard according to claim 2 characterised in that the slots (2.2) present in the plate(1) are provided with a growing width in the downward direction of the plate (1), the studs (1.2) are solid to the apron (2) and the slots (2.2) are present in the plate (2).
5. Lift foot guard according to any of the previous claims characterised in that when the lower plate (1) enters into contact with an obstacle (6) situated in a centred position with respect to the centre of said lower plate (1), this lower plate (1) displaces vertically following the slots (1.1, 2.2), which present on one of their vertical sides, the rectilinear trajectory marked by the studs (2.1, 1.2) or vice versa.
6. Lift foot guard according to claims 1 or 5 characterised in that when the obstacle (6) has been removed, the lower plate (1) falls through gravity to the resting position.
7. Lift foot guard according to claim 3 characterised in that each of the studs (2.1) is affixed to the apron (2) by means of a sliding plate (4) situated between the lower plate (1) and the apron (2), and affixed to this by fixation means (5).
8. Lift foot guard according to claim 7 characterised in that the sliding plates (4) are provided with a reinforcement (4.1) which stiffens the foot guard.
9. Lift foot guard according to claim 2 characterised in that the slots (1.1, 2.2) have a triangular form.
10. Lift foot guard according to claim 2 characterised in that the slots (1.1, 2.2) present their side closest to the opposite stud (2.1)in curved form.
EP09382192A 2009-10-02 2009-10-02 Lift foot guard Active EP2305593B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PT09382192T PT2305593E (en) 2009-10-02 2009-10-02 Lift foot guard
ES09382192T ES2382109T3 (en) 2009-10-02 2009-10-02 Elevator covers
EP09382192A EP2305593B1 (en) 2009-10-02 2009-10-02 Lift foot guard
AT09382192T ATE549288T1 (en) 2009-10-02 2009-10-02 ELEVATOR FOOT PROTECTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09382192A EP2305593B1 (en) 2009-10-02 2009-10-02 Lift foot guard

Publications (2)

Publication Number Publication Date
EP2305593A1 true EP2305593A1 (en) 2011-04-06
EP2305593B1 EP2305593B1 (en) 2012-03-14

Family

ID=41647272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09382192A Active EP2305593B1 (en) 2009-10-02 2009-10-02 Lift foot guard

Country Status (4)

Country Link
EP (1) EP2305593B1 (en)
AT (1) ATE549288T1 (en)
ES (1) ES2382109T3 (en)
PT (1) PT2305593E (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014195751A1 (en) * 2013-06-05 2014-12-11 Otis Elevator Company Retractable toe guard assembly for an elevator system
CN112607559A (en) * 2019-10-04 2021-04-06 奥的斯电梯公司 Elevator skirt plate
US11198594B2 (en) 2018-08-06 2021-12-14 Otis Elevator Company Elevator car apron

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092774A1 (en) 2004-03-09 2005-10-06 Otis Elevator Company Elevator toe guard
JP2006264809A (en) * 2005-03-22 2006-10-05 Toshiba Elevator Co Ltd Apron device for elevator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092774A1 (en) 2004-03-09 2005-10-06 Otis Elevator Company Elevator toe guard
JP2006264809A (en) * 2005-03-22 2006-10-05 Toshiba Elevator Co Ltd Apron device for elevator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014195751A1 (en) * 2013-06-05 2014-12-11 Otis Elevator Company Retractable toe guard assembly for an elevator system
CN105431367A (en) * 2013-06-05 2016-03-23 奥的斯电梯公司 Retractable toe guard assembly for an elevator system
US11198594B2 (en) 2018-08-06 2021-12-14 Otis Elevator Company Elevator car apron
CN112607559A (en) * 2019-10-04 2021-04-06 奥的斯电梯公司 Elevator skirt plate

Also Published As

Publication number Publication date
PT2305593E (en) 2012-05-09
ATE549288T1 (en) 2012-03-15
EP2305593B1 (en) 2012-03-14
ES2382109T3 (en) 2012-06-05

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