EP0491725B1 - Main courante pour escaliers, trottoirs roulants et similaires et son procede de production - Google Patents

Main courante pour escaliers, trottoirs roulants et similaires et son procede de production Download PDF

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Publication number
EP0491725B1
EP0491725B1 EP90912644A EP90912644A EP0491725B1 EP 0491725 B1 EP0491725 B1 EP 0491725B1 EP 90912644 A EP90912644 A EP 90912644A EP 90912644 A EP90912644 A EP 90912644A EP 0491725 B1 EP0491725 B1 EP 0491725B1
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EP
European Patent Office
Prior art keywords
handrail
segments
segment
mold
tensile support
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.)
Expired - Lifetime
Application number
EP90912644A
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German (de)
English (en)
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EP0491725A1 (fr
Inventor
Miklos Dobo
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.)
DOBO, MIKLOS, DR.
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Dobo Miklos Dr
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Publication date
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Publication of EP0491725A1 publication Critical patent/EP0491725A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/22—Balustrades
    • B66B23/24—Handrails

Definitions

  • the invention relates to a handrail for escalators, moving walks and the like, consisting of an endless, flexible bar with a grip area and guide areas that slide in operation on a stationary track, and one or more tension members embedded in the bar made of high-strength, low-stretch materials and a Process for its manufacture.
  • Known handrails of the type mentioned consist of continuous endless strips made of natural or synthetic rubber with incorporated reinforcement layers. These known handrails have proven their worth in operation, but their manufacture is extremely complex. The known handrails are produced in their entire length or in long sections and then have to be vulcanized in sections, for which they each have to be treated in a vulcanization press. After vulcanization, a relatively complex and not always satisfactory endless closure takes place.
  • link handrail strips are also known, which are composed of individual links of the same cross-section.
  • the links are either directly connected to each other (DE-PS 18 11 982) or mounted on a common continuous drag chain (US-PS 2,766,886).
  • the disadvantage of the known link handrail strips is that they have too much elongation in the direction of travel, since the play and assembly-related play between each pair of links add up to an impermissibly large play over the entire length. This applies particularly to wear after a long run and is noticeable through a sharp increase in running noise.
  • Another disadvantage is the wear caused by the friction between the individual links and guide rails.
  • a handrail is known from US Pat. No. 2,778,882, which consists of basic bodies and an endless coating of an elastic plastic material or rubber.
  • the basic bodies made of a hard plastic material are individually or in groups formed around the pulling ropes.
  • the mutually facing sides of the base body are provided with projecting lugs arranged on a gap.
  • the invention has for its object to provide a handrail of the type mentioned, which can be manufactured more easily and with less effort while maintaining its previous good properties.
  • this object is achieved in that the bar is divided in its longitudinal direction into individual, closely spaced, one-piece segments formed around the continuous tension member, which encompass the stationary path and are provided with a grip area and a sliding area.
  • the handrail according to the invention has the advantage that the segments can be produced individually or in groups independently of one another in close succession, whereby they are shaped around the continuous tension member.
  • the tension member can thus be molded into the individual segments during the manufacturing process in the same operation.
  • the segments forming the strip can be formed from a thermoplastic elastomer. These Segments can be injection molded or blown around the tension member. Alternatively, the segments can also be made from foamable polyurethane using the RIM process.
  • the successive segments which expediently have an approximately rectangular shape in plan view, can overlap one another in the grip area. This ensures that the handrail is closed to the outside, so that there is no risk of injury to the user.
  • the overlap regions can be formed by flat tongues projecting in the axial direction, which engage in a corresponding recess in the following segment.
  • the tongues either extend only in the area of the upper side of the handrail strips or around their entire cross section.
  • Each segment expediently has at its one end a flat projecting tongue which extends at least over the entire width of the grip region and at its other end a recess which is adapted to this. This ensures that all segments consist of identical molded parts that can be manufactured in the same shape or in the same group of shapes.
  • the upper sides of the tongues are preferably in the plane of the upper sides of the segments, so that a continuously smooth surface is produced when the handrail strip is in operation.
  • the undersides of the tongues are expediently above the tension member in the area of the tension member, so that the good flexibility of the bar is retained.
  • the mutually facing sides of the segments in the grip area may each be provided with a projecting, deformable flat lip, the lips lying close together and thereby forming a continuously closed handrail.
  • the lips When the tension member is stretched, the lips preferably lie against one another under prestress, so that a reliably tight connection of the grip part is created.
  • the tension member is expediently formed by a plurality of steel cables running parallel to one another. These can be arranged at a distance from one another in one plane. At least during the connection to the individual segments, the steel cables should be under tension so that it is ensured that all steel cables are supported.
  • the steel cable ends preferably overlap one another during the endless closing in their connecting region, the ends pointing in opposite directions, and are jointly surrounded by at least one segment. This creates a connection area which is not visible from the outside and which can be produced without additional effort.
  • the segment or segments in the transition area are produced in the same shapes as the other segments. Such a connection is much easier and better to produce than a vulcanized connection according to the prior art.
  • the steel cable ends are expediently arranged in an alternating sequence in the same plane in their connection area, so that no harmful moments can arise when a tensile force is applied.
  • the segments are made of a thermoplastic elastomer, they can be provided in the area of their sliding surfaces with molded, protruding knobs, for example in the form of spherical caps, whereby the Frictional force compared to the stationary path on which the handrail slides can be reduced.
  • the segments in the area of their sliding or drive surfaces can also be provided with molded sliding or adhesive layers, for example with textile layers, which are inserted into the mold or supplied in some other way before the injection molding or blowing process is initiated.
  • the successive segments can be provided with a continuous covering that overlaps them.
  • the method according to the invention for producing a handrail is characterized in that a section of the tension member is inserted into a mold, the regions of the tension member adjoining this section being passed through openings lying in a dividing line of the mold, that in the mold with a grip area and a segment provided with a sliding area around the tension member and after completion is removed together with the tension member from the open mold and that a section of the tension member adjacent to the segment is then inserted into the mold and surrounded with another segment and so on.
  • the injection mold or blow mold can completely surround the respective segment.
  • the injection mold or blow mold can be designed to be open on the side which faces the adjacent, already completed segment, the outer contour of the finished segment being used to close the mold on this side and as Part of the shape works.
  • a particularly simple way to generate a bias between the segments is that the Tension members are bent during the manufacture of the segments.
  • the tension member located in the closed mold can be deformed by the melt of the thermoplastic elastomer.
  • the tension member consists of parallel steel cables
  • the bar can be closed endlessly after reaching the prescribed length by simultaneously inserting both ends of the steel cables into the mold or in a plurality of adjacent molds and embedding them in one or more segments.
  • a continuous covering can be applied to it, which overlaps the individual segments.
  • the coating can be applied by producing it by continuous extrusion.
  • a short section of an endless, flexible handrail bar 1 is shown, which is provided for escalators, moving walks or the like.
  • the handrail strip 1 has a grip area 2 and sliding areas 4 which, in the assembled state of the handrail strip 1, encompass a stationary guide track (not shown in the drawing) on which the driven handrail strip 1 can slide.
  • Ten steel cables 3 serving as tension members are embedded in the upper area of the handrail strip 1.
  • the handrail strip 1 is divided in its longitudinal direction into individual closely consecutive segments 5, 6, 7, which have an approximately rectangular shape in plan view.
  • each segment 5, 6, 7 has a projecting tongue 8 at one end and a recess 9 adapted to this at its other end.
  • All segments 5, 6, 7 are of identical design.
  • the tongue 8 of the segment 6 engages in the recess 9 of the segment 5, while the tongue 8 of the segment 7 engages in the recess 9 of the segment 6.
  • the upper sides of the tongues 8 lie in the same plane as the upper sides 10 of the segments 5, 6, 7, i.e. the tongues 8 practically form an extension of the surface 10 on one side of the segments 5, 6, 7.
  • the undersides of the tongues 8 lie above the steel cables 3.
  • the recesses 9 of the segments 5, 6, 7 are step-shaped, the height of each step approximately corresponding to the thickness of a tongue 8.
  • the undersides of the tongues 8 each lie on the upper sides of the steps of the recess 9, so that the gaps between the individual segments 5, 6, 7 are thereby bridged.
  • the tongues 8 extend at least over the entire width of the handle part 2, so that the top of the Handrail bar 1 is almost smooth. However, it is also possible for the tongues 8 to extend over the entire outward region of the segments 5, 6, 7, so that each gap 11 between the individual segments is covered all around. Accordingly, the recesses 9 then extend over the entire outer region of the respective segments.
  • the segments 5, 6 and 7 of the embodiment of the handrail strip 1 shown in FIGS. 1 and 2 are made of a thermoplastic elastomer.
  • the individual segments 5, 6, 7 can accordingly be produced by injection molding.
  • the steel cables 3 are guided through openings in a corresponding shape under the same pretension and then encapsulated with the melt of a thermoplastic elastomer when the mold is closed.
  • the mold is opened and the finished segment is removed from the mold axially to the pretensioned wire ropes, the wire ropes for the next segment being introduced into the mold.
  • the process is then repeated as often as required.
  • the shape is designed so that the distance between the segments is extremely small, so that each gap 11 between the individual segments remains less than 2 mm.
  • the number of segment nests in the mold can vary depending on the size of the injection molding machine. In a very small injection molding machine, for example, each segment is manufactured individually, while in a larger injection molding machine, for example, ten segments can be manufactured simultaneously.
  • the handrail strip 1 is closed endlessly by simultaneously inserting the two ends of the steel cables 3 into the corresponding shape or into several shapes and embedding them in the segments by injecting the thermoplastic elastomeric material. After the segments have cooled, the ends of the steel cables are firmly connected. In order to In the respective overlap area of the steel cables when a tensile force cannot be applied to them, both ends of the steel cables lie in one plane. If, for example, the steel cables 3 are considered as ends in FIG. 1, the other ends would be inserted exactly into the gaps 12 between the steel cables 3.
  • Thermoplastic elastomers are available today in high hardness, so that the usual textile reinforcements can be dispensed with in a handrail bar made from them. This considerably simplifies the construction of the handrail strip.
  • thermoplastic elastomers are printable so that they can also be used as advertising media.
  • thermoplastic elastomers such as polyurethanes, elastomer alloys, copolyesters and the like, are suitable as the production material.
  • the steel cables 3 embedded in the segments 5, 6, 7 are preferably made of stainless steel or subjected to a surface treatment so that they do not rust.
  • the steel cables can be overmoulded with a thermoplastic elastomer.
  • Handrail strips made from thermoplastic elastomers are also very environmentally friendly when it comes to disposal, because the thermoplastic material can be reused in the recycling process.
  • the handrail strip 13 is composed of segments 14, 15, 16 which, in the same way as in the exemplary embodiment shown in FIGS. 1 and 2, consist of a thermoplastic elastomer.
  • the segments 14, 15, 16 are injection molded in close succession around steel cables 3, which serve as tension members in the handrail strip 13.
  • the segments 14, 15, 16 each have a projecting lip 17 and 18, respectively, the lips 17 and 18 of two adjacent segments lying closely against one another.
  • the lip 17 of the segment 15 bears against the lip 18 of the segment 14, while the lip 18 of the segment 15 bears against the lip 17 of the segment 16.
  • the lips bear against one another under prestress, so that the gaps 19 between the individual segments are tightly bridged.
  • the manufacturing process is carried out in the same way as in the exemplary embodiment according to FIGS. 1 and 2.
  • the steel cables 3 are bent, for example, during the injection molding of the segments.
  • the lips 17 and 18 of the successive segments then automatically abut one another under pretension.
  • the lip 18 of the already completed segment 15 can also be pressed onto the segment 15, while the segment 16 with its opposite lip 17 is produced by the injection molding process. After the completion of the segment 16, the lip 18 of the segment 15 is released again, so that the two adjacent lips 17 and 18 then inevitably bear against one another under prestress.
  • the tension members or steel cables 3 should be under prestress, so that the segments lie close together and, at the same time, it is ensured that all cables 3 carry along.

Landscapes

  • Escalators And Moving Walkways (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Claims (27)

  1. Main courante pour escaliers roulants, trottoirs roulants ou appareils similaires, se composant d'une bande sans fin flexible (1; 13) présentant une partie (2) destinée à être saisie par la main et des parties de guidage (4) qui glissent en service sur une piste fixe, ainsi que de tirants (3) en matériaux à haute résistance et à extensibilité réduite, noyés dans la bande, la bande étant munie, dans sa direction longitudinale, d'éléments de support séparés successifs qui sont moulés de façon non détachable autour du tirant ininterrompu, caractérisée en ce que la bande (1; 13) est subdivisée, dans sa direction longitudinale, en segments individuels d'une seule pièce (5, 6, 7; 14, 15, 16) qui se suivent jointivement, sont moulés autour du tirant ininterrompu, enveloppent la piste fixe et comprennent une partie (2) destinée à être saisie par la main et une partie de glissement (4).
  2. Main courante selon la revendication 1, caractérisée en ce que les segments (5, 6, 7; 14, 15, 16) qui constituent la bande (1; 13) sont faits d'un élastomère thermoplastique.
  3. Main courante selon la revendication 1 ou 2, caractérisée en ce que les segments (5, 6, 7; 14, 15, 16) sont moulés autour du tirant (3), individuellement ou par groupes, par le procédé de moulage par injection ou de soufflage.
  4. Main courante selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les segments (5, 6, 7; 14, 15, 16), vus de dessus, présentent une forme à peu près rectangulaire.
  5. Main courante selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les segments successifs (5, 6, 7) se recouvrent mutuellement dans la partie (2) destinée à être saisie par la main.
  6. Main courante selon la revendication 5, caractérisée en ce que les régions de recouvrement sont formées par des languettes plates (8) qui font saillie en direction axiale et qui s'engagent dans un creux correspondant (9) du segment suivant.
  7. Main courante selon la revendication 6, caractérisée en ce que chaque segment (5, 6, 7) présente, a l'une de ses extrémités, une languette saillante plate (8) qui s'étend au moins sur toute la largeur de la partie (2) destinée à être saisie par la main et, à son autre extrémité, un creux (9) adapté à cette languette.
  8. Main courante selon la revendication 7, caractérisée en ce que les faces supérieures des languettes (8) sont situées dans le plan des faces supérieures (10) des segments (5, 6, 7).
  9. Main courante selon la revendication 7 ou 8, caractérisée en ce que, dans la région du tirant (3), les faces inférieures des languettes (8) sont situées au-dessus de celui-ci.
  10. Main courante selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, dans la partie destinée à être saisie par la main, les côtés des segments (14, 15, 16) dirigés les uns vers les autres sont munis chacun d'une lèvre plate saillante déformable (17 ou 18), et en ce que les lèvres (17, 18) sont appliquées jointivement les unes contre les autres.
  11. Main courante selon la revendication 10, caractérisée en ce que les lèvres (17, 18) sont appliquées sous prétension les unes contre les autres à l'état étiré du tirant (3).
  12. Main courante selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le tirant est constitué par une multiplicité de câbles en acier (3) qui s'étendent parallèlement.
  13. Main courante selon la revendication 12, caractérisée en ce que les câbles en acier (3) sont disposés dans un plan à distance les uns des autres.
  14. Main courante selon l'une quelconque des revendications 1 à 13, caractérisée en ce que le tirant (3) est sous prétension.
  15. Main courante selon l'une quelconque des revendications 12 à 14, caractérisée en ce que, lorsque les câbles en acier (3) sont à l'état de boucle sans fin, leurs extrémités se chevauchent dans la région de leur assemblage et sont entourées par au moins un segment (5, 6, 7; 14, 15, 16).
  16. Main courante selon la revendication 15, caractérisée en ce que, dans la région de leur assemblage, les extrémités des câbles en acier (3) sont disposées côte à côte en alternance dans le même plan.
  17. Main courante selon l'une quelconque des revendications 1 à 16, caractérisée en ce que les segments sont munis, au niveau de leurs surfaces de glissement, de boutons saillants moulés dans la masse.
  18. Main courante selon l'une quelconque des revendications 1 à 16, caractérisée en ce que les segments sont garnis, au niveau de leurs surfaces de glissement et d'entraînement respectivement, de couches de glissement et de couches d'adhérence incorporées au moulage.
  19. Main courante selon l'une quelconque des revendications 1 à 18, caractérisée en ce qu'il est prévu un revêtement ininterrompu qui recouvre les segments successifs.
  20. Procédé de fabrication d'une main courante selon la revendication 1, caractérisé en ce qu'une longueur du tirant est placée dans un moule, les parties du tirant adjacentes à cette longueur passant à travers des ouvertures situées sur la ligne de joint du moule, en ce qu'un segment (5, 6, 7; 14, 15, 16), comportant une partie (2) destinée à être saisie par la main et une partie de glissement (4), est moulé autour du tirant et, après l'achèvement du moulage, est extraite du moule ouvert avec le tirant, et en ce qu'une longueur du tirant, adjacente au segment, est ensuite placée dans le moule et enveloppée d'un autre segment, et ainsi de suite.
  21. Procédé selon la revendication 20, caractérisé en ce que plusieurs segments sont fabriqués en même temps dans un moule commun ou dans des moules séparés, disposés côté à côte.
  22. Procédé selon la revendication 20 ou 21, dans lequel les segments sont fabriqués en matière élastomère thermoplastique, caractérisé en ce que le tirant qui se trouve dans le moule ferme est enveloppé par moulage avec la masse fondue de la matière élastomère thermoplastique.
  23. Procédé selon l'une quelconque des revendications 20 à 22, caractérisé en ce qu'on utilise un moule qui est réalisé sous forme ouverte du côté dirigé vers le segment (5, 6, 7; 14, 15, 17) adjacent déjà achevé, et en ce que le contour extérieur du segment (5, 6, 7; 14, 15, 16) achevé est utilisé pour la fermeture du moule.
  24. Procédé selon l'une quelconque des revendications 20 à 22, caractérisé en ce que le tirant est courbé pendant la fabrication des segments (5, 6, 7; 14, 15, 16).
  25. Procédé selon l'une quelconque des revendications 20 à 24, dans lequel le tirant est composé de câbles en acier parallèles, caractérisé en ce qu'après que la bande a atteint la longueur prescrite, elle est fermée en une boucle sans fin par le fait que les deux extrémités des câbles en acier sont placées en même temps dans le moule ou dans plusieurs moules juxtaposés et sont noyées dans un segment ou dans plusieurs segments.
  26. Procédé selon l'une quelconque des revendications 20 à 25, caractérisé en ce qu'après la fabrication des segments individuels, un revêtement continu qui les recouvre est appliqué.
  27. Procédé selon la revendication 26, caractérisé en ce que le revêtement est fabriqué par extrusion continue.
EP90912644A 1989-09-12 1990-08-27 Main courante pour escaliers, trottoirs roulants et similaires et son procede de production Expired - Lifetime EP0491725B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3930351 1989-09-12
DE3930351A DE3930351A1 (de) 1989-09-12 1989-09-12 Handlauf fuer rolltreppen, fahrsteige und dergleichen sowie verfahren zu seiner herstellung
PCT/DE1990/000656 WO1991004219A1 (fr) 1989-09-12 1990-08-27 Main courante pour escaliers, trottoirs roulants et similaires et son procede de production

Publications (2)

Publication Number Publication Date
EP0491725A1 EP0491725A1 (fr) 1992-07-01
EP0491725B1 true EP0491725B1 (fr) 1994-05-18

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EP90912644A Expired - Lifetime EP0491725B1 (fr) 1989-09-12 1990-08-27 Main courante pour escaliers, trottoirs roulants et similaires et son procede de production

Country Status (7)

Country Link
US (1) US5275270A (fr)
EP (1) EP0491725B1 (fr)
AT (1) ATE105829T1 (fr)
CA (1) CA2067350A1 (fr)
DE (2) DE3930351A1 (fr)
ES (1) ES2056477T3 (fr)
WO (1) WO1991004219A1 (fr)

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KR20100069674A (ko) 2007-09-10 2010-06-24 이에이치씨 캐나다, 인크. 압출된 복합 핸드레일을 위한 슬라이더 층의 전처리를 위한 방법과 장치
US9981415B2 (en) 2007-09-10 2018-05-29 Ehc Canada, Inc. Method and apparatus for extrusion of thermoplastic handrail
WO2009059426A1 (fr) * 2007-11-09 2009-05-14 Ehc Canada, Inc. Film avec revêtement barrière et procédé de fabrication et d'application du film
CA2723902C (fr) * 2008-05-21 2016-01-26 Inventio Ag Main courante pour un escalier roulant ou un trottoir roulant
NZ589260A (en) * 2008-05-21 2012-07-27 Inventio Ag Handrail with light window and handgrips for an escalator or a moving walkway
MY155066A (en) * 2008-05-21 2015-08-28 Inventio Ag Person conveying device, in particular escalator or moving sidewalk, comprising a handrail, and handrail for an escalator or a moving walkway
WO2009141224A1 (fr) 2008-05-21 2009-11-26 Inventio Ag Main courante pour un escalier roulant ou un trottoir roulant
RU2717807C2 (ru) 2015-05-07 2020-03-25 ИЭйчСи Канада, Инк. Компактный поручень из композитного материала с улучшенными механическими характеристиками
CA2987973C (fr) 2015-06-19 2023-05-23 Ehc Canada, Inc. Procede et appareil pour l'extrusion d'une rampe thermoplastique

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US3688889A (en) * 1970-08-14 1972-09-05 Ernst Koch Driven handrail system
DE2060356A1 (de) * 1970-12-08 1972-06-22 Rheinstahl Eggers Kehrhahn Handlauf fuer ein Fahrfoerdermittel,wie eine Fahrtreppe
BE794338A (fr) * 1972-01-24 1973-05-16 Pahl Gummi Asbest Main courante pour escalier roulant
DE2302602C3 (de) * 1973-01-19 1982-01-07 Pahl'sche Gummi- und Asbest-Gesellschaft "Paguag" GmbH & Co, 4000 Düsseldorf Handlauf für Rolltreppen
IT987303B (it) * 1973-05-04 1975-02-20 Pirelli Corrimano
CH557295A (de) * 1973-12-21 1974-12-31 Inventio Ag Gliederhandlauf fuer fahrtreppen oder personenfoerderbaender.
DE3715679A1 (de) * 1987-05-15 1988-12-01 Taurus Gumiipari Vallalat Aus elastischem material gefertigtes laufendes band, insbesondere fuer gelaender von fahrtreppen bzw. fahrsteigen

Also Published As

Publication number Publication date
WO1991004219A1 (fr) 1991-04-04
DE3930351A1 (de) 1991-03-21
EP0491725A1 (fr) 1992-07-01
DE3930351C2 (fr) 1992-04-30
ATE105829T1 (de) 1994-06-15
ES2056477T3 (es) 1994-10-01
DE59005770D1 (de) 1994-06-23
CA2067350A1 (fr) 1991-03-13
US5275270A (en) 1994-01-04

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