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
  • B66B13/02—Door or gate operation
  • B66B13/06—Door or gate operation of sliding doors
  • B66B13/08—Door or gate operation of sliding doors guided for horizontal movement
• • 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
  • B66B13/02—Door or gate operation
  • B66B13/06—Door or gate operation of sliding doors
• • 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
  • B66B13/30—Constructional features of doors or gates
  • B66B13/301—Details of door sills
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
  • E05D15/00—Suspension arrangements for wings
  • E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
  • E05D15/0621—Details, e.g. suspension or supporting guides
  • E05D15/0626—Details, e.g. suspension or supporting guides for wings suspended at the top
  • E05D15/0643—Details, e.g. suspension or supporting guides for wings suspended at the top on balls or floating rollers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C29/00—Bearings for parts moving only linearly
  • F16C29/04—Ball or roller bearings
  • F16C29/045—Ball or roller bearings having rolling elements journaled in one of the moving parts
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
  • E05Y2900/104—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for elevators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C2350/00—Machines or articles related to building

Definitions

• the present invention relates to a guiding device for an elevator door leaf.
• the floor doors of lifts or elevators are normally provided below with shoes which slide into a groove obtained in the sill and have the purpose of guiding the doors during the opening and closing movement which occurs when the cabin is located at the floor door.
• the known type of shoes adopted in this context include the use of an end portion which slides inside a track obtained in the sill. Both the end portion and the track have corresponding flat surfaces, therefore during the opening and closing movement of the door leaves a relative sliding occurs between two portions of flat surfaces. This causes high sliding friction leading to rapid wear of the components, for which periodic replacement of the shoes is necessary.
• the technical task underpinning the present invention is to propose a guiding device for an elevator door leaf which obviates the drawbacks of the prior art as cited above.
• a guiding device for an elevator door leaf comprising:
• a second cavity open outwards of the body is obtained within the body and within which a second spherical element is rotatably inserted.
• the second spherical element is arranged so as to protrude from the second cavity outwards.
• the first cavity and the second cavity are separate, i.e., non-communicating.
• the first cavity and the second cavity are substantially identical in shape and size and are obtained within the body so that the first spherical element and the second spherical element protrude outside the body on opposite sides.
• the anti-friction means comprises at least one abutment sphere arranged within the first cavity.
• the abutment sphere has smaller dimensions with respect to the first spherical element.
• the abutment spheres arranged within the first cavity are a plurality and are arranged circumferentially around the first spherical element.
• the body has a recess suitable for being coupled to a corresponding portion of a head of a door leaf.
• the first cavity is blind and has an opening outwards.
• the first spherical element is in contact with an edge of the body delimiting the opening.
• - figure 1 illustrates a guiding device of an elevator door leaf, according to the present invention, in perspective view
• - figure 2 illustrates a lateral view of the guiding device of figure 1 ;
• figure 3 illustrates a sectional view of the guiding device of figure 1 (according to the axis A-A visible in figure 2);
• figure 4 illustrates a sectional view of the guiding device of figure 1 (section according to an axis orthogonal to the axis A-A visible in figure 2);
• FIG. 5a and 5b illustrate an elevator door leaf comprising the device of figure 1 , in perspective view respectively from the front and from the back.
• reference numeral 1 indicates a guiding device 1 of an elevator door leaf.
• the guiding device 1 comprises a body 2 within which at least a first cavity 3a open outwards of the body 2 is obtained.
• the first cavity 3a communicates with the outside through an opening 4.
• the first cavity 3a is blind.
• the first cavity 3a has a substantially cylindrical shape.
• a first spherical element 5a is rotatably inserted in the first cavity 3a. Such a first spherical element 5a is arranged so as to protrude outwards from the first cavity 3a. The portion of the first spherical element 5a protruding from the opening 4 is intended to roll on one of the surfaces of the sill of an elevator.
• the first spherical element 5a is arranged so as to be able to contact an edge 4a of the body 2 delimiting the opening 4.
• cavities 3a, 3b open outwards of the body 2, each having a corresponding spherical element 5a, 5b therein free to rotate on itself and partially protruding outwards.
• the number 3b indicates the second cavity and the number 5b indicates the second spherical element.
• the two cavities 3a, 3b are separate, i.e., non-communicating.
• the two cavities 3a, 3b are substantially identical in shape and size and are obtained within the body 2 so that the first spherical element 5a and the second spherical element 5b protrude outside the body 2 on opposite sides.
• the guiding device 1 comprises anti-friction means 7 interposed between the first spherical element 5a and at least one wall delimiting the first cavity 3a to limit the movement of the first spherical element 5a within the first cavity 3a.
• the anti-friction means 7 limits the translation of the first spherical element 5a inside the first cavity 3a without however preventing the rotation thereof.
• the anti-friction means 7 comprises at least one abutment sphere 7 arranged in the first cavity 3a.
• the abutment sphere 7 has smaller dimensions with respect to the first spherical element 5a.
• the abutment spheres housed within the first cavity 3a are a plurality.
• the abutment spheres 7 are arranged circumferentially around the first spherical element 5a.
• the first spherical element 5a is interposed between the abutment spheres 7.
• anti-friction means 7 similar to that described for the first cavity 3a.
• the body 2 has a recess 8 suitable for being coupled to a corresponding portion of a head 11 of a door leaf 10.
• the body 2 comprises two opposite side surfaces 2a, 2b on which the openings 4 are obtained and a connecting surface 2c between the two side surfaces 2a, 2b.
• the recess 8 is obtained along the connecting surface 2c.
• the recess 8 extends through the connecting surface 2c.
• the body 2 comprises a substantially flat upper surface 2d. The recess 8 extends from one side of the upper surface 2d to an opposite side according to a distancing/approaching extension with respect to the upper surface 2d which follows the connecting surface 2c.
• FIGS 5a and 5b illustrate an elevator door leaf, indicated with the number 10.
• the leaf 10 comprises one or more guiding devices 1 as described above.
• the door leaf 10 comprises a head 11 .
• the head 11 is a known type of device which couples with the sill of an elevator and will not be further described herein.
• the guiding devices 1 are coupled with the head 11.
• the guiding device 1 is coupled to the head 11 by means of the recess 8.
• a rotatable spherical element in the cavity allows to obtain a rolling contact between the guiding device and the elevator sill, replacing the sliding of the known solutions. This reduces the wear on components, increasing the life thereof. Furthermore, it is no longer necessary to resort to the use of expedients to reduce the friction from sliding.
• anti-friction means allows the contact between the spherical element and the cavity to be minimized, limiting friction and wear.
• the anti-friction means reduces or eliminates the lateral or translational displacement of the spherical element, constraining it to rotate on itself in its seat.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Elevator Door Apparatuses (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74194962

Family Applications (1)

Country Status (6)

Citations (4)

Family Cites Families (16)

• 2021
  • 2021-10-26 WO PCT/IB2021/059891 patent/WO2022096984A1/en not_active Ceased
  • 2021-10-26 EP EP21799110.8A patent/EP4217301A1/en active Pending
  • 2021-10-26 JP JP2023526152A patent/JP7724854B2/ja active Active
  • 2021-10-26 US US18/252,019 patent/US12024399B2/en active Active
  • 2021-10-26 CN CN202180074959.8A patent/CN116457297A/zh active Pending
  • 2021-11-03 AR ARP210103053A patent/AR123988A1/es unknown

Patent Citations (4)

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