EP1781563B1 - Dispositif destine a un ascenseur - Google Patents
Dispositif destine a un ascenseur Download PDFInfo
- Publication number
- EP1781563B1 EP1781563B1 EP05740979.9A EP05740979A EP1781563B1 EP 1781563 B1 EP1781563 B1 EP 1781563B1 EP 05740979 A EP05740979 A EP 05740979A EP 1781563 B1 EP1781563 B1 EP 1781563B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- toe guard
- safety device
- elevator
- elevator car
- side walls
- 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.)
- Active
Links
Images
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 present invention relates to a safety device in an elevator door opening as defined in the preamble of claim 1.
- a safety device used in an elevator door opening is a foot guard, also called a toe guard, placed at the lower edge of the elevator car and having a length substantially at least equal to the width of the landing door opening.
- the toe guard is a plate-like piece or equivalent mounted in a substantially vertical plane, and it is designed to block the gap opening into the elevator shaft between the lower edge of the elevator and the floor surface of the landing e.g. when the elevator has stopped due to a failure so that the lower edge of the elevator car remains above the surface of the landing floor. This gap may be so large that a person escaping from the elevator can fall through the gap into the elevator shaft when descending from the car remaining above the surface of the landing floor.
- EP1118576 discloses a toe guard that can be folded or slid under the elevator car so that the elevator car can get closer to the bottom of the shaft.
- the solution according to this EP solution uses complex lever arms and guides for changing the position of the toe guard.
- the complex structure is more expensive and is additionally susceptible to damage.
- US patent no. US6,095,288 discloses a toe guard that turns on hinges under the elevator car.
- the bottom of the shaft is provided with a surface inclined at an angle of about 45° which receives rollers provided at the lower edge of the toe guard when the elevator car comes to its lowest position, with the result that that the toe guard, guided by the rollers, turns on its hinges to a position under the elevator car.
- One problem here is that the structure can become dirty, which may prevent the toe guard from being properly returned to the straight position or block the hinges so that the turning motion of the toe guard may become stiff, leading to a risk of breakdown of the whole structure.
- FIG. 4 shows a structural solution resembling the invention now disclosed, comprising a telescoping toe guard with an external lower part moving vertically on a fixed internal upper part.
- a problem with the solution described in this specification is dirt, which can easily get into the open spaces between the moving parts, causing operational disturbances.
- FR 2 841 886 is disclosing a toe guard for elevators.
- the object of the present invention is to overcome the above-mentioned drawbacks and to achieve a reliably functioning safety device of economical cost for the door opening of an elevator, such as a toe guard.
- the safety device of the invention is characterized by what is disclosed in the characterization part of claim 1.
- Other embodiments of the invention are characterized by what is disclosed in the other claims.
- the advantages of the elevator safety device of the invention include a good tolerance of dirt, allowing reliable operation of the safety device.
- the safety device has a simple structure and allows the use of a toe guard of sufficient height in elevator shafts having a low pit.
- the toe guard is automatically returned to its low position by gravity, thus obviating the need for complicated returning structures or resetting systems.
- Another advantage is that the toe guard of the invention can be installed on an existing elevator car without dismantling the old threshold structure. For mounting the toe guard, no additional components are needed, but the new toe guard fits directly in the place of the old one.
- a further advantage is the fact that no complex hinged solutions are needed.
- the box-like structure gives a better stiffness in the direction of an impact applied to the toe guard than prior-art solutions, such an impact being most commonly caused by a person's knee.
- Fig. 1 presents a diagrammatic and simplified view of an elevator car 2 having stopped in the elevator shaft 1 at a position somewhat above the lowest landing floor 4.
- the gap opening into the elevator shaft between the lower edge of the elevator car and the landing floor 4 is covered by telescoping toe guard 3 extending downwards from the front edge of the elevator car 2 and having a total height larger than the height of the pit 5 of the elevator shaft.
- Figures 2 and 3 present a toe guard 3 according to the invention as seen from behind, i.e. from the direction of the elevator shaft, and from one side and partially sectioned.
- An upper part 6 fixedly attached to the front edge of the elevator car 2 extends directly downwards from the front edge of the elevator car.
- At the lower edge of the planar front plate 11 of the upper part 6 is a fold turned obliquely inwards, i.e. towards the lower part 9.
- the side edges of the upper part 6 have folds turned inwards substantially perpendicularly to the front plate 11 to form the side walls 12 of the upper part 6.
- Provided on the inner surface of the side walls 12 are substantially vertical guides 7 for guiding the vertical motion of the lower part 9.
- the lower part 9 consists of a planar front plate 13 and side walls 14 formed by folds turned inwards perpendicularly to the front plate.
- substantially vertical guide elements 10 such as slide bars or equivalent for controlling the vertical motion of the lower part 9 inside the upper part 6, so that the guide elements 10 are guided by the guides 7 in the upper part 6.
- the upper edge of the lower part 9 is provided with a fold 15 oriented in an outward, i.e. forward direction and serving to stop the motion of the lower part against the buffers 8a fastened to the bottom of the upper part 6.
- the lower part 9 can not fall down from inside the upper part 6.
- the lower edge of the lower part 9 is provided with one or more buffers 8b serving to dampen the impact on the lower part 9 when the lower part hits the bottom of the elevator shaft.
- the inner surface of the lower part 6 is additionally provided with a safety circuit contact 16, the counterpart of which is placed in the upper part of the outer surface of the lower part 9. Except at the lowest landing floor, the safety circuit contact 16 opens and causes a halt of the elevator car 2 if anything touches the lower part 9 of the toe guard 3 so that the lower part slides upwards inside the upper part 6. This may occur e.g. when someone puts a hand or foot into the shaft opening. At the lowest landing floor there is a separate limit switch, which, however, is not depicted in the figures.
- the toe guard may also be made from more than two telescoping parts.
- a safe toe guard can be made from two or more parts placed side by side which move into their respective upper parts in such manner that only that part moves to which a force is applied from below. This provides the advantage that the opening leading into the shaft remains as well closed as possible, because only a relatively narrow part of the toe guard slides upwards.
- the guide elements of the lower part may be rail-like elements or e.g. structures resembling elevator car guide elements. It is also possible to have the guide bars placed in the lower part and the guide elements in the upper part. Moreover, the placement and structural solutions of the safety circuit contact may differ from the above description.
Landscapes
- Cage And Drive Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Claims (5)
- Dispositif de sécurité dans une ouverture de porte d'ascenseur, ledit dispositif de sécurité comprenant au moins un chasse-pieds (3) placé essentiellement au bord inférieur de la cabine d'ascenseur et ayant une partie supérieure (6), une partie inférieure (9) se déplaçant ou pouvant se déplacer par rapport à la partie supérieure, laquelle partie inférieure (9) a été adaptée de façon à coulisser de manière télescopique par rapport à la partie supérieure (6) lorsqu'elle rencontre un obstacle, caractérisé par le fait qu'un contact (16) qui est relié au circuit de sécurité d'ascenseur se trouve entre la partie supérieure (6) et la partie inférieure (9) de telle manière que, lorsque la partie inférieure (9) du chasse-pieds (3) est relevée vers le haut à l'intérieur de la partie supérieure (6), le circuit de sécurité arrête le mouvement de la cabine d'ascenseur (2), excepté au niveau du palier le plus inférieur.
- Dispositif de sécurité selon la revendication 1, dans lequel un interrupteur de fin de course individuel est fourni au niveau du palier le plus inférieur de telle manière qu'il est shunté lorsque le contact (16) se déplace au-delà de l'interrupteur de fin de course.
- Dispositif de sécurité selon la revendication 1 ou 2, caractérisé par le fait que la partie supérieure (6) du chasse-pieds (3) présente des parois latérales (12) courbées vers la partie inférieure, c'est-à-dire vers l'arrière, avec des barres de guidage (7) sur leur surface intérieure pour guider le mouvement vertical de la partie inférieure (9).
- Dispositif de sécurité selon la revendication 1, 2 ou 3, caractérisé par le fait que la partie inférieure (9) du chasse-pieds (3) présente des parois latérales (14) courbées vers l'arrière, avec des éléments de guidage (10) de la surface extérieure desdites parois latérales (14) pour guider le mouvement vertical de la partie inférieure (9) à l'intérieur de la partie supérieure (6) de telle sorte que les éléments de guidage (10) sont guidés par les barres de guidage (7) de la partie supérieure (6).
- Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé par le fait que la partie inférieure (9) du chasse-pieds (3) présente au niveau de son bord supérieur un pli (15) courbé vers la partie supérieure (6) et adapté pour arrêter le mouvement de la partie inférieure (9) contre des amortisseurs (8) fixés à la partie inférieure de la partie supérieure (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20040776A FI20040776A (fi) | 2004-06-07 | 2004-06-07 | Hissijärjestely |
PCT/FI2005/000227 WO2005121014A2 (fr) | 2004-06-07 | 2005-05-18 | Dispositif destine a un ascenseur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1781563A2 EP1781563A2 (fr) | 2007-05-09 |
EP1781563B1 true EP1781563B1 (fr) | 2014-04-16 |
Family
ID=32524456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05740979.9A Active EP1781563B1 (fr) | 2004-06-07 | 2005-05-18 | Dispositif destine a un ascenseur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1781563B1 (fr) |
FI (1) | FI20040776A (fr) |
WO (1) | WO2005121014A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11161716B2 (en) | 2018-02-23 | 2021-11-02 | Otis Elevator Company | Elevator car toe guard system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3403984A1 (fr) * | 2017-05-15 | 2018-11-21 | Inventio AG | Garde-pieds destiné à une cabine d'ascenseur et système de cabine d'ascenseur |
CN108529407A (zh) * | 2018-05-24 | 2018-09-14 | 天奥电梯(中国)有限公司 | 一种旋转折叠式护脚板 |
EP3608282B1 (fr) | 2018-08-10 | 2022-06-22 | Otis Elevator Company | Tablier de cabine d'ascenseur |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60102386A (ja) * | 1983-11-04 | 1985-06-06 | 株式会社日立製作所 | エレベ−タ−かごの前だれ装置 |
EP1118576B1 (fr) * | 2000-01-21 | 2005-04-06 | ThyssenKrupp Aufzugswerke GmbH | Chasse-pieds pour cabine d'ascenceur |
IT251255Y1 (it) * | 2000-07-28 | 2003-11-19 | Selcom Spa | Paramento mobile in cabina di ascensore od elevatore |
WO2002060802A2 (fr) * | 2001-01-31 | 2002-08-08 | Otis Elevator Company | Ensemble garde-pieds mobile pour ascenseur |
FR2841886B1 (fr) * | 2002-07-05 | 2004-09-17 | Alfonso Enrique | Dispositif de protection retractable pour cabine d'ascenseur |
-
2004
- 2004-06-07 FI FI20040776A patent/FI20040776A/fi not_active Application Discontinuation
-
2005
- 2005-05-18 WO PCT/FI2005/000227 patent/WO2005121014A2/fr not_active Application Discontinuation
- 2005-05-18 EP EP05740979.9A patent/EP1781563B1/fr active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11161716B2 (en) | 2018-02-23 | 2021-11-02 | Otis Elevator Company | Elevator car toe guard system |
Also Published As
Publication number | Publication date |
---|---|
WO2005121014A3 (fr) | 2006-04-06 |
FI20040776A (fi) | 2005-08-19 |
EP1781563A2 (fr) | 2007-05-09 |
FI20040776A0 (fi) | 2004-06-07 |
WO2005121014A2 (fr) | 2005-12-22 |
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