EP2593392B1 - Frame of an elevator cabin or elevator platform with hidden corner joints - Google Patents

Frame of an elevator cabin or elevator platform with hidden corner joints Download PDF

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Publication number
EP2593392B1
EP2593392B1 EP10747524.6A EP10747524A EP2593392B1 EP 2593392 B1 EP2593392 B1 EP 2593392B1 EP 10747524 A EP10747524 A EP 10747524A EP 2593392 B1 EP2593392 B1 EP 2593392B1
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EP
European Patent Office
Prior art keywords
walls
arm
arms
frame
bars
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.)
Not-in-force
Application number
EP10747524.6A
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German (de)
English (en)
French (fr)
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EP2593392A1 (en
Inventor
Giuseppe Volpe
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.)
IGV GROUP SpA
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IGV GROUP SpA
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Publication date
Application filed by IGV GROUP SpA filed Critical IGV GROUP SpA
Publication of EP2593392A1 publication Critical patent/EP2593392A1/en
Application granted granted Critical
Publication of EP2593392B1 publication Critical patent/EP2593392B1/en
Not-in-force 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
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0206—Car frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation

Definitions

  • the present invention relates to elevators in general and in particular to a reticular frame of an elevator cabin or elevator platform with hidden corner joints.
  • Figure 1 shows a frame 1 of an elevator cabin or elevator platform, of which only the metal base 4 is shown for simplicity.
  • the frame 1 is a parallelepiped reticular structure formed of metal bars 2, called uprights and cross members, converging three by three at eight corner joints 3. Each of these joints has three arms orthogonal one to another converging in a common vertex. The ends of the bars 2 are joined to respective arms of respective corner joints 3.
  • the frame 1 in particular comprises:
  • Each orthogonal arm of a joint 3 consists of two walls joined at 90° along a common longitudinal edge, contiguous to the walls of two other arms forming the common vertex.
  • the corner joint thus obtained presents an external surface and an internal surface that delimits a seat for connection of the ends of the cross members 2a (or 2b) and of the upright 2c converging there.
  • the metal bars 2 comprise walls joined at 90° along a common longitudinal edge forming a tubular structure whose ends are in contact with the internal surface of the seat into which they fit in the respective corner joints.
  • the connection of cross members 2a and 2b and of upright 2c to the corner joint 3 is made outside the bars by means of screws the engage with threaded bushes (not seen in the figure) inserted in said bars.
  • the corner joints 3 project beyond the metal bars 2 inside the hoistway 5 for as much as the total thickness of the metal sheet of which they are made (usually about 4 mm) and the thickness of the screw head. This creates a problem affecting the proper functioning of the system.
  • the distance between the threshold of the cabin and that of the floor must be extremely short for reasons of safety.
  • this distance can be set by norms harmonized with the directive concerned and, particularly for elevators, it must be of 35 mm or less, while for elevator platforms it must be of 20 mm or less.
  • the 4 mm projection of the corner joints reduces the space needed for correctly operating the system, increasing the risk of contact between the cabin and the structure 6 of the door 7 on the floor side, a risk already increased by the hoistway 5 being inevitably out of plumb, and by the tolerances allowed for civil works.
  • Figure 2 shows a cross section of an elevator plant that employs the frame in Figure 1 in a two-door cabin , namely with doors in two opposite walls.
  • the frame 1 is rigidly joined to car sling which includes sliding blocks (not shown in the figure) that slide along guides 8.
  • a further defect in these reticular-structured frames consists in the fact that, according to the way the ends of the bars 2 are fitted into the respective seats in the joints 3, said seats can be only partly occupied by the bars 2 thus creating spaces between bar ends. In this case small blocks of polyethylene must be fitted in between said ends.
  • Another prior art example is given in JP 10 265 151 A .
  • the purpose of the present invention is therefore to overcome the above drawbacks and propose a reticular-structured frame with corner joints that do not further extend into the hoistway beyond the metal bars forming part of the frame.
  • subject of the present invention is a frame for an elevator cabin or elevator platform comprising:
  • each orthogonal arm of a corner joint consists of two walls joined at 90° along a common longitudinal edge, either bend or welding, the two walls of each arm being contiguous to those of the other two arms at a common vertex.
  • Each arm of the corner joint therefore has an external surface in relation to the trihedron delimited by the three arms converging at the common vertex.
  • coupling between joints and related bars is such that the external surface of each arm of the corner joint is in contact with the surface of said two walls, the one orthogonal to the other, inside the cavity of the respective bars.
  • the crosswise sections at the two ends of each cross member converge at 45°, so that the edges of contiguous cross members can match together.
  • each corner joint comprises a parallelepiped block from which said arms depart, orthogonal to three faces of the block with a common vertex, leaving free a pedestal round each arm to receive the edge of one end of the bar joined to that arm, the width of the pedestal being such that the faces of the block opposite to those from which the arms engaged in seats present in the respective cross members depart are flush with the walls of the bars contiguous to said faces.
  • the arms of the corner joint are solid prismatic bars having at least two walls orthogonal one to another in contact with the surface of the two walls the one orthogonal to the other inside the cavity of the respective bars.
  • a vertical arm comprises a longitudinal groove aligned with a hole that passes through said block for insertion of a tie-rod whose ends are bolted against the walls of opposite corner joints, further increasing the rigidity of said reticular structure.
  • said fixing means do not project beyond the external surface of the wall of said metal bars.
  • the fixing means include flat-headed screws.
  • the metal bars are aluminium extrusions whose walls are lightened by longitudinal cavities lying parallel to said seat.
  • the lightener cavity does not continue into the part crossed by said fixing means comprising a flat-headed screw.
  • the fixing means include lowered head screws.
  • the advantage compared with known systems consists in reducing the bulk of the reticular structure of the frame of the cabin, which otherwise might become critical in many installations. This also facilitates assembly of the elevator allowing for hoistways imperfectly realized or out of plumb, especially in cases where the cabin has two doors on opposite sides.
  • the profile of the arms of the joint need not necessarily be strictly complementary to the internal profile of the uprights and of the cross members into which it is inserted; all that is needed is to respect the coupling at the two walls, orthogonal one to another, of the seat that houses each arm. This makes it possible to couple the joint of the frame with uprights having different internal profiles.
  • Figure 3 shows a metal sheet 20 laid flat, cut in the form of a cross with arms of equal length lying along orthogonal axes 20a and 20b.
  • Two arms 23 and 24, orthogonal one to another, are of a length half that of the remaining arms 21 and 22.
  • the axes 20a and 20b are symmetrical in relation to arms 21 and 22.
  • One side of arms 23 and 24, respectively 23b and 24b, is therefore disposed along a respective axis 20a and 20b, and the two sides cross one another at the centre of the cross at a circular hole 33.
  • the metal sheet in this example is galvanised steel and is about 4 mm thick.
  • the positions of the hexagonal holes 30, 32 respectively present in the shorter arms 23, 24, are the same as for those in arms 21, 22 on one side only in relation to the longitudinal axes 20a and 20b.
  • the metal sheet 20 is a semifinished piece to be used to make a corner joint 40 ( Figure 4 ).
  • Figure 4 shows the corner joint 40 obtained from the metal sheet 20 after two 90° bends have been made in opposite directions along axes 20a and 20b, and a weld 41 along matching sides 23b and 24b. Following these operations three arms 42, 43, 44 orthogonal one to another will be formed and converge at a common vertex 33.
  • Arm 42 consists of two walls, 21c and 21d, joined at 90° along a bend 21b.
  • Arm 43 consists of two walls, 22c and 22d, joined at 90° along a bend 22b.
  • Arm 44 consists of two walls, 23 and 24, joined at 90° along the welded edges 23b and 24b. Bends 21b and 22b and the welded edges 23b and 24b converge at the vertex 33 of the trihedron formed by arms 42, 43 and 44.
  • Figure 5 shows that holes 29 in arm 43 occupy the same positions as holes 30 and 32 in arm 44. The same positions apply to holes 25 in arm 42.
  • Figure 6 shows joint 40 with its arms 42 and 43 placed horizontally and arm 44 vertically.
  • Horizontal arms 42 and 43 are seen partially inserted inside the longitudinal cavities 45a and 46a present in two metal bars, respectively 45 and 46, acting as cross members in the interconnections to be seen in Figure 7 .
  • the vertical arm 44 is also shown partially inserted inside a longitudinal cavity 47a present in a metal bar 47 acting as an upright in the interconnections to be seen in Figure 7 .
  • Figure 6a shows the form taken by metal bar 47 at any non-terminal cross section.
  • Metal bar 47 comprises four walls 50, 51, 57, 60 orthogonally joined one to another to define the longitudinal cavity 47a for housing the vertical arm 44 of corner joint 40.
  • the extrusion mould for bar 47 is shaped so that the walls 50, 51, 57, 60 are lightened by longitudinal cavities 48 separated by partition walls 55, narrower than the width of the cavity, in the form of ribs to achieve the same rigidity as the solid wall.
  • the longitudinal walls 57 and 60 have a common edge 63 widely bevelled to 45°; the two cavities 48 at either side of the bevelled edge 63 are open outwards so that, together with the partition walls 55, they form two longitudinal grooves 66 and 67 to house the edges of respective panels forming the walls of the cabin.
  • the external surface of contiguous walls 21c and 21d, orthogonal one to another, of horizontal arm 42, inside cavity 45a of cross member 45, is in contact with the surface of walls 50, 51 having a common edge opposite the bevelled edge 63.
  • the width of the walls of the arms is substantially equal to the width of the face of the walls of the metal bar with which they are in contact.
  • the first crosswise terminal sections 68 and 69 of cross members 45 and 46 engaging the horizontal arms 42, 43 of the corner joint 40 are inclined at 45° in relation to the longitudinal axis so that, once assembled as seen in Figure 7 , the edges of the above sections 68 and 69 match.
  • the second terminal sections of cross members 45 and 46 (not shown) are inclined at 45° in the opposite direction in relation to the first terminations 68 and 69.
  • Wall 50 of upright 47 is crossed through by two holes 71 and 72 aligned with holes 30 present in the wall 23 of the vertical arm 44 of corner joint 40.
  • the wall 50 of cross members 45 and 46 is crossed through by two holes (61 in Figure 7a ) aligned with holes, respectively 25 and 29, in the horizontal walls 21d and 22d of horizontal arms 42 and 43.
  • FIG. 7 shows a frame 80 of an elevator cabin or elevator platform (for simplicity, only the metal base 82 is shown) obtained by assembling the components already described. It will be seen that the frame 80 is a parallelepiped reticular structure made of metal bars that converge, three by three, at eight corner joints identical to joint 40. Frame 80 comprises in particular:
  • Figure 7a shows a preferred type of join for joining the metal bars, uprights 84 and cross members 81 and 83, to the corresponding arms 42, 43 and 44 of the respective hidden corner joints.
  • flat headed screws are used, therefore lying flush with the external surface of bars 81, 83 and 84 and further reducing encumbrance in the elevator shaft.
  • the use of flat-headed screws makes it necessary to fill a short terminal length of the cavities in the walls of the extruded bars beforehand and after that make the holes.
  • the filling material, described as MR may be the aluminium itself or else a thermosetting resin sufficiently rigid to avoid deformation of the wall when the screws are tightened.
  • lowered head screws may be used without altering the extruded profiles but this involves a slight encumbrance in the hoistway.
  • connection may be seen between the horizontal wall 21 d of arm 42 of the joint 40 and wall 50 of the lower cross member 45.
  • Wall 50 is solid around the hole 61, aligned with hole 25 in wall 21d. Filling is continued for a length that goes from the edge 68 to beyond the hole 61.
  • a hexagonal nut 52 is set in the hole 25 and there welded to wall 21d.
  • Hole 61 is not threaded and has an initial flared section to receive the flared head of a screw 62 that screws into the nut 52.
  • Figure 8 shows a corner joint 90 obtained from die-cast aluminium using a special die.
  • the corner joint 90 comprises a block 91 substantially cubic in shape, from three faces 92, 93, 94 of which, each consecutive to the other twos, three respective arms 95, 96, 97 project orthogonally from a central position; said arms are of equal length, but could also be of different lengths.
  • Arms 95, 96 97 are prismatic in shape with an octagonal base corresponding to a square with bevelled vertices, the sides of which are disposed parallel to the edges of block 91.
  • Arm 97 comprises a longitudinal parallelepiped groove 97d open towards arm 95, delimited by three contiguous walls 97a, 97b, and 97c starting from an external wall 97a.
  • Groove 97d communicates with an unthreaded hole 101 that passes through block 91 in the direction of the groove.
  • Passing through arm 95 is a pair of unthreaded holes 98 parallel to arm 97, disposed along the centre line of arm 95.
  • Passing through arm 96 is a pair of unthreaded holes 99 parallel to arm 97, disposed along the centre line of arm 96.
  • Passing through the wall 97a of arm 97 is a pair of unthreaded holes 100 parallel to arm 96, disposed along the centre line of wall 97a.
  • Three parallelepiped cavities 102, 103, 104 are made in block 91 on the edges comprised between the pairs of consecutive faces from which arms 95, 96, 97 depart.
  • Cavity 102 in particular is comprised between arms 95 and 96; cavity 103 between arms 96 and 97, and cavity 104 between arms 95 and 97.
  • Cavities 103 and 104 are realized in a substantially central position on respective edges.
  • Cavity 102 is realized starting from a substantially central position and extending as far as face 111 ( Figure 11 ) of block 91 opposite face 94.
  • the vertex of block 91 comprised between three cavities 102, 103, 104 is bevelled to form an equilateral triangular surface 108.
  • Figure 9 is a plan view of joint 90 from the side of face 92 of block 91 in Figure 8 . It will be seen from Figure 9 that wall 97b is crossed through by a pair of unthreaded holes 109 parallel to arm 95, disposed along the centre line of wall 97b. The distance of holes 109 from the face 94 of block 101 is equal to the distance of holes 100 from the same face, and similarly equal to the distance of holes 99 from face 93.
  • Figure 10 is a plan view of joint 90 of Figure 8 from the side of face 110 opposite to face 93. Looking at Figure 10 , it will be seen that the distance of holes 98 of arm 95 from face 92 is equal to the distance of holes 100 and 109 from face 94. Holes 98, 99, 100 and 109 are therefore at the same distance from the faces of block 91 from which the arms containing them extend.
  • Figure 11 is a plan view of joint 90 in Figure 8 from the side of face 111 opposite face 94, after joint 90 has made a clockwise rotation of 90°. It will be seen from Figure 11 that the diameter of hole 101 is practically equal to the distance between walls 97a and 97c, and is tangential to wall 97b.
  • Figure 12 shows joint 90 with its arms 95 and 96 disposed horizontally and arm 97 disposed vertically.
  • the figure shows two identical bars 120 and 121 used as cross members, and a third identical bar 122 used as an upright in the interconnections that will be seen in Figure 13 .
  • the cross members 120 and 121 differ from cross members 45 and 46 in Figure 6 solely because of not having terminations inclined at 45°.
  • the walls of bars 120, 121, 122 delimit three respective identical longitudinal cavities 120a, 121 a and 122a equal to the cavities in the bars in Figure 6 .
  • arm 95 is partially inserted inside the cavity 120a, while arms 96 and 97 are not shown since they are completely inserted in the respective cavities 121a and 122a of bars 121 and 122.
  • the faces of arms 95 and 96 parallel or orthogonal to the edges of block 91, and one of the bevelled edges are respectively in contact with the walls and with the bevelled edge that delimit cavities 120a and 121a present in the cross members 120 and 121.
  • the walls 97a, 97b and 97c of arm 97 are respectively in contact with the walls that delimit the cavity 122a present in upright 122.
  • the faces of block 91, opposite faces 92, 93 and 94 from where the arms 95, 96, 97 depart, are flush with the walls of bars 121 and 122 contiguous to said faces.
  • the height of block 91 is equal to that of the cross members 120 and 121.
  • cavity 103 is as wide as the groove 66 in cross member 121 and as groove 67 in upright 122, and is contiguous to said grooves.
  • Two holes, 128 and 129, pass through the wall of upright 122 in contact with wall 97b of the grooved arm 97, said holes being aligned with holes 109 in said wall 97b.
  • two holes (130 in Figure 13a ) pass through the wall of cross members 120 and 121 opposite the respective grooves 66, said holes being aligned with holes, respectively 98 and 99, of the horizontal arms 95 and 96.
  • Figure 13 shows a frame 140 of an elevator cabin or elevator platform (of which, for simplicity only the metal base 142 is shown) obtained by assembly of the components seen in Figures 8 to 12 .
  • the frame 140 is a reticular structure parallelepiped in shape, consisting of metal bars converging three by three at eight corner joints 145 identical to joint 90.
  • Frame 140 comprises in particular:
  • the bevelled vertices 63 of cross members 141 and 143 and of uprights 144 converge in the triangular bevelled surface 108 present in blocks 91 of corner joints 145.
  • the frame 140 also comprises four tie-rods (not shown in the figures) each of which is placed in the longitudinal cavity 122a of the respective upright 144 passing through: the hole 101 in the block 91 of a lower corner joint, the longitudinal slot 97d in the vertical arm 97 of the lower corner joint, the longitudinal slot 97d in the vertical arm 97 of an upper corner joint and, lastly, the hole 101 in block 91 of the upper corner joint.
  • the tie-rods are bolted to the two threaded ends emerging from the respective blocks 91 of corner joints 145, respectively lower and upper, to sustain the rigid base 142 of the cabin, this too helping to increase structural rigidity of the frame 140.
  • Figure 13a shows a type of preferred connection of the metal bars, uprights 144 and cross members 141 and 143, to the corresponding arms 95, 96, 97 of the respective corner joints 145.
  • flat-headed screws are used, these lying flush with the external surface of bars 141, 143, 144 and further reducing encumbrances in the elevator hoistway.
  • the use of flat-headed screws needs prior filling of a short terminal length of the cavities contained in the wall of the extruded bars, followed by execution of the holes.
  • the filling material, described as MR can be the aluminium itself or a thermosetting resin of sufficient rigidity to avoid deformation of the wall which might be caused by tightening the screw. Alternatively lowered head screws can be used without altering the extruded bars, though this may slightly increase encumbrances in the elevator hoistway.
  • connection can be seen between arm 95 of the joint 90 and the wall 50 of the lower cross member 120.
  • the wall 50 is solid round the hole 130 aligned with hole 98 in arm 95. Filling is continued for a length from the edge 124 to beyond the hole 130.
  • a threaded bushing 146 is set in the hole 98. Hole 130 is not threaded and its initial length 147 is flared to receive the flat head of a screw 149 that engages in the bushing 146.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Types And Forms Of Lifts (AREA)
  • Body Structure For Vehicles (AREA)
EP10747524.6A 2010-07-13 2010-07-23 Frame of an elevator cabin or elevator platform with hidden corner joints Not-in-force EP2593392B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2010A001278A IT1400985B1 (it) 2010-07-13 2010-07-13 Telaio reticolare di cabina di ascensore o piattaforma elevatrice con giunti angolari a scomparsa.
PCT/IT2010/000334 WO2012007974A1 (en) 2010-07-13 2010-07-23 Frame of an elevator cabin or elevator platform with hidden corner joints

Publications (2)

Publication Number Publication Date
EP2593392A1 EP2593392A1 (en) 2013-05-22
EP2593392B1 true EP2593392B1 (en) 2014-12-31

Family

ID=43739897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10747524.6A Not-in-force EP2593392B1 (en) 2010-07-13 2010-07-23 Frame of an elevator cabin or elevator platform with hidden corner joints

Country Status (4)

Country Link
EP (1) EP2593392B1 (it)
ES (1) ES2534087T3 (it)
IT (1) IT1400985B1 (it)
WO (1) WO2012007974A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110142544A (zh) * 2019-04-08 2019-08-20 广东凯兴达建筑科技有限公司 一种模块化电梯井道组焊工艺

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
FR3025503B1 (fr) * 2014-09-04 2016-12-23 Pitance Etudes Et Ind - P E I Ensemble de construction pour pylone d’ascenseur et pylone d’ascenseur associe
WO2017033038A1 (en) * 2015-08-21 2017-03-02 Otis Elevator Company Structural member for elevator
CN105460741B (zh) * 2016-01-05 2018-02-27 韦伯电梯有限公司 低层住宅楼加装电梯
CN110540124B (zh) * 2019-02-20 2020-12-08 广东威得利电梯有限公司 一种电梯轿厢用玻璃减振框及其制造方法
CN109775531B (zh) * 2019-02-25 2024-05-28 杭州西奥电梯有限公司 立柱与横梁的连接结构以及电梯铝型材轿厢
CN110642124B (zh) * 2019-09-25 2021-07-02 苏州珀威智能科技有限公司 一种电梯框架的安装方法
CN110510482B (zh) * 2019-09-25 2024-05-07 苏州珀威智能科技有限公司 一种方便安装的电梯框架
CN113846903A (zh) * 2021-09-23 2021-12-28 浙江亨达塑模股份有限公司 便捷式塑料围挡l型连接机构

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BE629188A (it) * 1962-03-05 1963-07-01
GB2263097B (en) * 1991-12-10 1995-07-05 Otis Elevator Co Elevator car construction
ATE180749T1 (de) * 1994-01-27 1999-06-15 Inventio Ag Aufzugskabine für einen offenen aufzugsschacht
JPH10265151A (ja) * 1997-03-24 1998-10-06 Nippon Light Metal Co Ltd エレベーター用カゴ室の壁
DE19745129A1 (de) * 1997-10-13 1999-04-22 Hydraulik Liftsysteme Walter M Kabine für einen Aufzug
JP4272003B2 (ja) * 2003-07-16 2009-06-03 山本鍍金工業株式会社 什器の連結構造
KR100497921B1 (ko) * 2005-03-04 2005-06-29 (주)인사이드휴전텍 조립식 진열대용 파이프 연결구

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Publication number Priority date Publication date Assignee Title
CN110142544A (zh) * 2019-04-08 2019-08-20 广东凯兴达建筑科技有限公司 一种模块化电梯井道组焊工艺

Also Published As

Publication number Publication date
ITMI20101278A1 (it) 2012-01-14
EP2593392A1 (en) 2013-05-22
IT1400985B1 (it) 2013-07-05
ES2534087T3 (es) 2015-04-17
WO2012007974A1 (en) 2012-01-19

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