EP2845986A1 - Trittbrett, das ein vereinfachtes Kontrollsystem der Winkelöffnung umfasst - Google Patents

Trittbrett, das ein vereinfachtes Kontrollsystem der Winkelöffnung umfasst Download PDF

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Publication number
EP2845986A1
EP2845986A1 EP14183454.9A EP14183454A EP2845986A1 EP 2845986 A1 EP2845986 A1 EP 2845986A1 EP 14183454 A EP14183454 A EP 14183454A EP 2845986 A1 EP2845986 A1 EP 2845986A1
Authority
EP
European Patent Office
Prior art keywords
connecting rods
mechanisms
configuration
plane
deployed configuration
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Withdrawn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
EP14183454.9A
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English (en)
French (fr)
Inventor
Patrick Lachant
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.)
CDH Group SAS
Original Assignee
CDH Group SAS
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 CDH Group SAS filed Critical CDH Group SAS
Publication of EP2845986A1 publication Critical patent/EP2845986A1/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Withdrawn legal-status Critical Current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
    • E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders

Definitions

  • the invention relates to the field of footboards.
  • a step comprises two mutually articulated planes that allow it to adopt an expanded configuration in which the planes are spaced angularly from one another and a folded configuration in which the planes are substantially parallel to each other.
  • Each plan usually includes two amounts and one or more steps connecting the amounts.
  • step and stepladder are synonymous, regardless of the number of steps.
  • stop mechanisms To limit the angle of angular aperture between the planes, it is known to use stop mechanisms with compass.
  • the document JP20130257244 (ALINCO) has a step equipped with two compasses stop mechanisms, each mechanism comprising a pair of rods articulated both mutually centrally, and with respect to a respective amount.
  • the rods of the same pair are spaced apart from each other by a spacer.
  • the two mechanisms are connected by means of a central bar which connects to the central joints of the connecting rods.
  • Each rod is fixed under a step via a bracket which also forms a stub stopper in the deployed configuration of the step.
  • This mechanism is not without drawbacks. First, it includes many parts, which makes the manufacturing and assembly relatively complex. Secondly, in the event that the user inadvertently presses the foot on the mechanism, it would result in a significant shear stress on the mounting brackets (and consequently on the steps), to the detriment of the safety of the footboard .
  • a first goal is to provide a step offering simplicity of realization, without loss of reliability or security.
  • a second objective is to provide a step equipped with compass stop mechanisms having a reduced number of parts.
  • a step 1 comprising a front plane 2 , a rear plane 3 , two compass stop mechanisms 4 fixed on both the front plane 2 and the rear plane 3 , on each side of the step 1, and a bar 5 central interconnecting the two mechanisms 4 to stop compass between them.
  • the planes 2, 3 front and rear are mounted hinged together so that the step 1 can adopt a folded configuration in which the planes 2, 3 are substantially parallel to each other, and an expanded configuration (shown on the figure 1 ) in which the planes 2, 3 together form an acute angle.
  • the front plane 2 comprises a pair of uprights 6 before and at least one step 7 transversely connecting the uprights 6 before.
  • the step 1 comprises four steps 7.
  • a number of steps 7 less than or greater than four could be provided (including three or five).
  • the amounts 6 are in this case formed of metal profiles (for example aluminum or aluminum alloy), including U-section A.
  • the uprights are provided with skid pads 9 .
  • the rear plane comprises a pair of rear uprights 10 and at least one bar 11 connecting the struts 10 back.
  • the rear uprights 10 are, like before uprights 6, formed of metal profiles (e.g. aluminum or alloy of aluminum), in particular U-section A.
  • the rear uprights are provided with skid pads 9 .
  • the rear plane 3 forms an acute angle with the plane 2 before, and 12 lower ends of the uprights 10 form rear, with the 8 lower ends of the uprights 6 before, a laying plan for the step 1.
  • the rear plane 3 comprises three bars 11. These bars 11 are in this case square section, but this section could be circular or oval. Depending on the height of the step 1, the number of bars 11 could be different (especially higher).
  • the uprights 6 of the front plane 2 intended to form a rise plan allowing a user to reach high areas, are wider than the uprights 10 of the rear plane 3 .
  • the bars 11 have the primary function of ensuring the rigidity of the rear plane 3 , they are rigid enough to be able to form, occasionally, extra steps.
  • Each compass stop mechanism 4 comprises two connecting rods 13 each having an inner end 14 and an outer end 15 .
  • the rods 13 are rotatably mounted on an upright 6, 10 of a plane 2, 3 respectively by their outer end 15 and are mutually articulated by their inner end 14 .
  • each connecting rod 13 is hinged on a pin 16 formed projecting from an outer face 17 of upright 6, 10 corresponding.
  • This pin 16 has the functions, first, to limit the friction of the rod 13 against the amount 6, 10 during its pivoting, secondly, to place the rod 13 in a vertical plane perpendicular to the laying plane when (as in the illustrated example) the uprights 6, 10 are not parallel but converge towards their upper ends and, thirdly, laterally indexing the link 13 to overlap with the other link 13 of the mechanism, as shown in FIG. figure 2 .
  • each connecting rod 13 to the corresponding amount 6.10 is in this case provided by a rivet 18, but one could resort to any similar means (eg a screw).
  • the mutual articulation of the connecting rods 13 is achieved by means of an axis 19 formed in this case by a rivet (but it could be a screw), which keeps the connecting rods 13 secured while leaving them free to rotate. one with respect to the other.
  • the connecting rods 13 can thus adopt a folded position ( figure 3 ), corresponding to the folded configuration of the step 1, in which the connecting rods 13 form between them an acute angle, and an extended position ( figure 4 ), corresponding to the deployed configuration of the step 1, in which the rods 13 extend substantially in the extension of one another (that is to say they form a substantially flat angle).
  • a spacer 20 is preferably interposed between the connecting rods 13.
  • This spacer 20, visible on the figure 2 is, for example, made of a material with a low coefficient of friction (typically nylon).
  • the central bar 5 has a dual function.
  • the central bar 5 forms a stop which limits the rotation of the rods 13 in the deployed position, so that they are maintained in the extension of one another, which blocks the rotation of the plane 3 rear relative to the front plane 2 and limits the risk of inadvertent folding of the step 1, especially when moving the step 1 deployed configuration (especially when the user changes the step 1 position).
  • the user can use the central bar 5 by pulling it upwards, which causes the folding mechanisms 4 stop. Conversely, to deploy the step 1, the user may assist the central 5 bar by pushing downwards, which causes the deployment mechanisms 4.
  • the central bar 5 which is made for example of aluminum or steel, comprises a central body 21, which is in the form of a cylindrical tube and, at each end of the body, a lug 22 projecting body 21, which extends the in the axis of it.
  • Each lug 22 is extended by a return 23 at right angle pierced with a hole 24 for the passage of the axis 19 of articulation of the connecting rods 13.
  • the tab 22 jointly overcomes the two rods 13. More specifically, the tab 22 has a bottom face 25 , facing down, against which are applied the rods 13 in the deployed configuration of the mechanisms 4 stop, so that block these in the extended configuration of the step 1.
  • a spacer 26 (visible on the figure 2 ) is preferably placed between the return 23 at right angles to the central bar 5 and the adjacent rod 13 .
  • This spacer 26 is for example made of a material with a low coefficient of friction (typically nylon).
  • the 4 stop mechanisms with compass are in the folded position ( figure 3 ), the two connecting rods 13 of each mechanism 4 forming, between them, an acute angle.
  • the central bar 5 can then pivot freely about the axes 19 forming the central joints of the stop mechanisms 4 , as illustrated by the dotted lines on the figure 3 .
  • the 4 compasses stop mechanisms are in the deployed position ( Figures 2 and 4 ), the two connecting rods 13 of each mechanism then extending substantially in the extension of one another.
  • the central bar 5 keeps mechanisms 4 in their extended position by cooperation of the abutment formed by the underside 25 of the tab 22, with the rods 13.
  • the underside 25 of the tab 22 abuts on an upper surface 27 connecting rods 13, preventing the latter to form an obtuse angle opposite to the acute angle between them in the folded position.
  • step 1 is maintained and secure deployed configuration.
  • the number of pieces is reduced (besides the amounts 6.10 and the steps 7, there are four connecting rods 13, six rivets 18.19 and a central bar 5 , to which must be added the spacers 20.26 ).
  • the connecting rods 13 may all be identical. Therefore, the cost and manufacturing time can be reduced because of standardization.
  • the maintenance or the maintenance of the step 1 is facilitated since a technician only needs a drill and a rivet pliers.

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)
  • Ladders (AREA)
EP14183454.9A 2013-09-04 2014-09-03 Trittbrett, das ein vereinfachtes Kontrollsystem der Winkelöffnung umfasst Withdrawn EP2845986A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1358459A FR3010127B1 (fr) 2013-09-04 2013-09-04 Marchepied comprenant un systeme de controle simplifie d'ouverture angulaire

Publications (1)

Publication Number Publication Date
EP2845986A1 true EP2845986A1 (de) 2015-03-11

Family

ID=49326770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14183454.9A Withdrawn EP2845986A1 (de) 2013-09-04 2014-09-03 Trittbrett, das ein vereinfachtes Kontrollsystem der Winkelöffnung umfasst

Country Status (2)

Country Link
EP (1) EP2845986A1 (de)
FR (1) FR3010127B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317368A (zh) * 2015-11-20 2016-02-10 温四妹 一种单人作业人字梯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB278206A (en) * 1926-11-23 1927-10-06 William Harris Improvements in folding step ladders
US1944099A (en) * 1933-04-12 1934-01-16 Philadelphia Screen Mfg Compan Stepladder
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
EP2267267A1 (de) * 2008-04-24 2010-12-29 Luhao Leng Klappleiter
FR2973826A1 (fr) * 2011-04-07 2012-10-12 Centaure Dispositif d'acces en hauteur comprenant une marche obtenue par la solidarisation d'au moins deux elements de marches et procede de fabrication d'un tel dispositif
JP2013057244A (ja) 2012-12-28 2013-03-28 Alinco Inc 脚立における開き止め装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903781C3 (de) * 1979-02-01 1981-12-17 Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger Klapptritt

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB278206A (en) * 1926-11-23 1927-10-06 William Harris Improvements in folding step ladders
US1944099A (en) * 1933-04-12 1934-01-16 Philadelphia Screen Mfg Compan Stepladder
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
EP2267267A1 (de) * 2008-04-24 2010-12-29 Luhao Leng Klappleiter
FR2973826A1 (fr) * 2011-04-07 2012-10-12 Centaure Dispositif d'acces en hauteur comprenant une marche obtenue par la solidarisation d'au moins deux elements de marches et procede de fabrication d'un tel dispositif
JP2013057244A (ja) 2012-12-28 2013-03-28 Alinco Inc 脚立における開き止め装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105317368A (zh) * 2015-11-20 2016-02-10 温四妹 一种单人作业人字梯

Also Published As

Publication number Publication date
FR3010127A1 (fr) 2015-03-06
FR3010127B1 (fr) 2016-02-12

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