EP1439280A1 - Trittleiter mit einer Federarmverriegelten Plattform - Google Patents

Trittleiter mit einer Federarmverriegelten Plattform Download PDF

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Publication number
EP1439280A1
EP1439280A1 EP03290122A EP03290122A EP1439280A1 EP 1439280 A1 EP1439280 A1 EP 1439280A1 EP 03290122 A EP03290122 A EP 03290122A EP 03290122 A EP03290122 A EP 03290122A EP 1439280 A1 EP1439280 A1 EP 1439280A1
Authority
EP
European Patent Office
Prior art keywords
platform
plan
step according
stand
loop
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.)
Withdrawn
Application number
EP03290122A
Other languages
English (en)
French (fr)
Inventor
Francis Manier
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.)
Tubesca SA
Tubesca SA France
Original Assignee
Tubesca SA
Tubesca SA France
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
Application filed by Tubesca SA, Tubesca SA France filed Critical Tubesca SA
Priority to EP03290122A priority Critical patent/EP1439280A1/de
Publication of EP1439280A1 publication Critical patent/EP1439280A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/181—Additional gripping devices, e.g. handrails
    • E06C7/182—Additional gripping devices, e.g. handrails situated at the top of the ladder

Definitions

  • the invention relates to a step including the articulation link at the platform has a bending capacity at the load and allows bring the platform to the horizontal even if the opening angle of the step is lower due to the space available.
  • the steps generally have a platform upper articulated to the step plan and connected by its lower face to a link hinged to the stand plan.
  • This link is rigid and allows the platform to be folded down in the step plan at the close the step and open it horizontally in the service.
  • the opening angle of the kickstand and the step plane is equal at its nominal service value otherwise, if the angle is insufficient, the platform cannot be brought horizontally, remaining in position inclined, not locked, and if the operator risks accessing it, the connecting rod or its joints may break.
  • the invention aims to remedy these drawbacks and proposes a step with crutch plan, step plan articulated by its uprights at the level above the stand plan, and an upper platform hinged to the step plan, characterized by that the platform is connected to the kickstand plane by means of two spring wire rods, generally arched in shape and arranged in each side of the platform, each articulated to the stand and to the platform on its underside, said links making it possible to fold the platform down substantially in the plane of steps out of service position and return it to the horizontal position service with positioning lock.
  • Said loop extends laterally in width to form a double open loop with snap-in mounting on the cross rod, this double loop forming spacer of the articulation centering of the platform on the step plan.
  • the snap-in mounting of the double stand loop facilitates the mounting of the platform on the step.
  • the links slightly deviate from the lateral edge of the platform, from their articulation fold at the platform to their end loop, so there is no risk of getting your fingers caught between the link and the platform during its travel.
  • the platform is advantageously profiled in section variable over its length and regular in width, calculated in dimension according to the flexural strength, maintained substantially equal in length from a central load. So the face bottom of the platform has a section in the shape of an ellipse part, turned down and with the ventral part in the center.
  • One of platform ends is profiled with a regular bore hole on its width receiving in articulation the cross rod support of step plan, and the other end is regularly profiled in hook-shaped width, receiving in the open service position the support rod support leg.
  • the hook is oriented towards the outside with grip towards the inside and engages in a snap-on manner on the crutch plan cross member, the engagement engaged being carried out opposite the hook under the external elastic return of the rods on the hook relative to their articulation on the platform.
  • the platform is advantageously made from material extrusion synthetic, polyvinyl chloride for example, and so preferential bi-extrusion of two synthetic materials, with bands of flexible rubber adhering on the upper face.
  • the step according to the invention essentially consists of a step plan 1, a crutch plane 3 articulated by its upper end to the plane of steps 1, and an upper platform 5 hinged to the plane of steps.
  • the platform 5 is articulated to the step plan 1 at its front end by a cross rod 7 transversely connecting the amounts of the step plan, substantially in its middle part.
  • the platform 5 is further connected to the stand plane 3 by means two lateral spring wire rods 9, articulated by one end at the platform and fixed by the other end to a cross rod 11 arranged at an adequate height on the stand plane.
  • the rods 9 are identical ( Figure 5). They have a transverse fold end 13 forming an axis of articulation to the platform, part of body 15 with rounded or arcuate shape, and a double loop 17 with the end opposite the fold and engaged by snap-fastening through its opening on the cross rod 11 of the stand plane.
  • the body part 15 is capable of flexing widely along an arc of smaller radius as we seen in Figure 3 where the platform, normally tilted in half-open position of the running board in phantom is brought to the horizontal under the operator's load.
  • the transverse fold 13 is received in a bore part complementary 19 to the platform, arranged substantially in part median of it and on its underside.
  • the platform is made from extrusion of material profile synthetic with a section with a flat upper surface and substantially ellipsoidal lower surface. This platform is in additionally structured with internal ribs 21 determining a beam with substantially equivalent bending capacity over its entire surface relative to a central load. The middle part is maximum thickness and the section is reduced towards the ends.
  • the front end, on the tread side, is cylindrical profiled and has a central bore receiving the cross rod 7 of the plane of steps, to which the platform is hinged.
  • the rear end, on the stand side, is shaped like a hook 25 in section whose nose is external and the grip part 27 is oriented inward and backward.
  • This hook end of the platform allows to lock the opening position of the step in position of service, the hook 25 coming to engage elastically on the rod of cross member 11 of the side stand plan while the connecting rods 9 provide forward traction on the hook.
  • the articulation movement of platform 5 on the plane of steps 1 is further centered by the fact that the double loop end 17 of the spring rods serves as a spacer with slight application pressure on the internal face of the uprights of the crutch 3. Keeping the articulation movement of the platform centered is therefore balanced in an elastic manner by the lateral spring effect of the rods, these being further arranged with their body 15 released laterally from the edge opposite the platform.
  • the body plan of rod can be oriented at an angle of about 10 ° from the edge plane of the platform, so that this clearance prevents the operator from pinch your fingers on the link and the platform being step maneuver.
  • the mounting of the step is also facilitated by the structure with spring rods.
  • the plans of crutches 3 and steps 1 being articulated and the platform 5 mounted articulated on the plane of steps, the connection of the platform to the crutch plan is obtained by simple snap-fastening of the double loop 17 of the rods on the rod corresponding crutch plan cross member, articulation fold 13 being previously mounted in the corresponding bore 19 of the platform.
  • the shape of the rods can change while keeping the spring effect.
EP03290122A 2003-01-17 2003-01-17 Trittleiter mit einer Federarmverriegelten Plattform Withdrawn EP1439280A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03290122A EP1439280A1 (de) 2003-01-17 2003-01-17 Trittleiter mit einer Federarmverriegelten Plattform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03290122A EP1439280A1 (de) 2003-01-17 2003-01-17 Trittleiter mit einer Federarmverriegelten Plattform

Publications (1)

Publication Number Publication Date
EP1439280A1 true EP1439280A1 (de) 2004-07-21

Family

ID=32524263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290122A Withdrawn EP1439280A1 (de) 2003-01-17 2003-01-17 Trittleiter mit einer Federarmverriegelten Plattform

Country Status (1)

Country Link
EP (1) EP1439280A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1679423A1 (de) * 2004-12-24 2006-07-12 Hymer-Leichtmetallbau GmbH & Co. KG Steh-Leiter mit schwenkbarer Sicherheitsbrücke
CN102162331A (zh) * 2010-02-12 2011-08-24 海罗-工厂鲁道夫勒有限及两合公司 梯子、尤其是阶梯立式梯子或折叠梯凳
US20160017658A1 (en) * 2007-01-26 2016-01-21 Werner Co. Step Stool and Method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2263369A1 (en) * 1974-03-07 1975-10-03 Ducros Georges Step ladder with platform below hinge - has perforated and corrugated platform held horizontally by safety spring latch
DE8203532U1 (de) * 1982-02-10 1982-07-15 Krause-Werk Gmbh & Co Kg, 6320 Alsfeld Klappleiter
FR2763357A1 (fr) * 1996-09-17 1998-11-20 Tubesca Systeme de securite de positionnement lateral pour escabeau, marchepied et dispositif a plate-forme surelevee analogue

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2263369A1 (en) * 1974-03-07 1975-10-03 Ducros Georges Step ladder with platform below hinge - has perforated and corrugated platform held horizontally by safety spring latch
DE8203532U1 (de) * 1982-02-10 1982-07-15 Krause-Werk Gmbh & Co Kg, 6320 Alsfeld Klappleiter
FR2763357A1 (fr) * 1996-09-17 1998-11-20 Tubesca Systeme de securite de positionnement lateral pour escabeau, marchepied et dispositif a plate-forme surelevee analogue

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1679423A1 (de) * 2004-12-24 2006-07-12 Hymer-Leichtmetallbau GmbH & Co. KG Steh-Leiter mit schwenkbarer Sicherheitsbrücke
DE102004062567A1 (de) * 2004-12-24 2006-07-13 Hymer-Leichtmetallbau Gmbh & Co. Kg Steh-Leiter mit Sicherheitsbrücke
DE102004062567B4 (de) * 2004-12-24 2008-03-27 Hymer-Leichtmetallbau Gmbh & Co. Kg Steh-Leiter mit Sicherheitsbrücke
US20160017658A1 (en) * 2007-01-26 2016-01-21 Werner Co. Step Stool and Method
CN102162331A (zh) * 2010-02-12 2011-08-24 海罗-工厂鲁道夫勒有限及两合公司 梯子、尤其是阶梯立式梯子或折叠梯凳
CN102162331B (zh) * 2010-02-12 2015-11-18 海罗-工厂鲁道夫勒有限及两合公司 梯子

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