EP0310884B1 - Echelle repliable - Google Patents
Echelle repliable Download PDFInfo
- Publication number
- EP0310884B1 EP0310884B1 EP88115651A EP88115651A EP0310884B1 EP 0310884 B1 EP0310884 B1 EP 0310884B1 EP 88115651 A EP88115651 A EP 88115651A EP 88115651 A EP88115651 A EP 88115651A EP 0310884 B1 EP0310884 B1 EP 0310884B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rung
- rungs
- ladder
- foldable
- distance
- 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
Links
Images
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
- E06C1/38—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
-
- 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
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
- E06C1/3835—Foldable ladders in which the longitudinal members are brought together on folding having collapsible steps comprising a hinge in their central part
-
- 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
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
Definitions
- the invention relates to a foldable ladder with foldable rungs, which have a 90 ° pivot point in the central region, the rungs also being rotatably installed in the risers by 90 ° via a rung end axle joint.
- German Offenlegungsschriften 29 23 397 and 33 20 519 are to be mentioned.
- DE-OS 29 23 397 relates to a folding ladder with two spars, to which rungs each consisting of two directly articulated parts are articulated, the different pivot axes being parallel to one another and perpendicular to the plane of the ladder, with a resistant, preferably tubular rod for Connection of the articulation points of the rung parts with each other, and with a support frame arranged under the bottom rung of the ladder, the support legs of which have a greater length than the rung parts and are articulated on the one hand on the spars and on the other hand, the tip of the support frame being arranged over the ends of the support legs is and forms a support for the lower end of the resilient rod when the conductor is fully spread apart, the pivot axes of the support legs of the support frame being arranged on the spars at fixed locations with respect to the spars, and that the pivot axis in the region I the articulation of the two support legs to one another is movable relative to the resistant rod, the stop surface formed by the tip of the support frame itself being held
- DE-OS 33 20 519 describes a folding ladder in which the ladder rungs are folded in the middle and are hinged to the ladder stiles. There is a central locking linkage that is not a pushing linkage and that is not slidably arranged in the spar.
- the present invention has for its object to provide such a folding ladder that allows a completely uniform buckling movement of the rungs, but at the same time there is no impairment of the climbing process.
- a spacer roller for supporting the elongated rungs can be installed in the central joint, as in the end joints, whereby the step web can be formed in the middle of the rung from both sides so that the step webs abut each other and the pressure point is on the rung ends is supported.
- the risers are preferably U-shaped and the material thickness in connection with the likewise U-shaped crossbars is preferably held so that the overall stability corresponds to the standards on which ladders are based, the accuracy of safety being ensured by suitable fitting pieces.
- One of the main functions of the folding ladder according to the invention is to be easily transportable as a ladder on caravans, on the boat, in the house, since the folding ladder has the shape of a "rod" with a rectangular cross-section when folded.
- An aluminum alloy is preferably to be provided as material, the rivets are preferably made of chromium-nickel steel. Furthermore, the aluminum brings the desired corrosion resistance and the desired weight saving.
- Figure 1 is a foldable ladder with foldable rung bars 3, each with a central joint and built in the riser rung end axis joints 6; 9 shown, the foldability is guaranteed.
- the ratchet points 7, 8 are tied to the synchronism of the rungs movement from rungs to rungs 3 by a push rod 2 on the right and left, whereby the axis intersection with the push rod rivet must be precisely positioned.
- Figure 1 is the ladder in the working position with extended rung position 18 in the 90 ° pivot point 4 in the central region of the foldable rungs by means of the spacer rollers 5 with the step butt edge 14 to the pressure point in the end position in cooperation with the rung end axis joints installed in the spars at the end of the rungs 9 installed at anchor point 7 firmly anchored.
- the ladder can be seen in the rest position as a space-saving, cubically acting rod 17, here 20 shows a locking lock or lockability.
- the push rod is shown in FIG. 2, and the rivetability from rung web to rung web is shown at 16.
- the position of use of the foldable ladder is anchored in the area of the bottom rung with brackets 21 by means of the middle bracket 27, 23 being a support for the linkage in the base of the ladder, which engages in support, whereby the counter-strut makes the ladder stable.
- the center pivot point of the rung is stabilized by means of a spacer roller 5 which, by means of the locking core pin 30, absorbs all rotary movements in a free-standing manner up to the end point position 28, the central bracket 27 designed as a cross bolt ensuring the final engagement.
- Figure 7 shows the almost cubic closed section viewed from above. It is the compact part with the spacer roller 5, which serves for stabilization; 25 denotes the movable push rods which make it possible to slide into the counter spars by means of the spacers; the center point of the round is the final locking, as are the U-spars of FIG. 6 in FIG. 7 that are pushed against each other.
- Figures 8-17 show further exemplary embodiments of the subject matter of the invention.
- the risers are at 31, the stepping rungs are foldable at 32, the push rods are offset at 33, and at 34 they are precise from rung web to rung web fixed joint rivets for the uniform pushing movement of the rungs, with 35 the spacer rings adapted to the push rod are attached to the axis connecting 31 and 32 39 as well as 36 spacer rings for the rung offset, under 37 is a load-bearing spacer roller, with 38 is the rungs connecting axis inserted, under 39 the rungs with the risers are anchored by means of axis 9 with the spacer rollers in a pre-planned, surprising position, at 40 the connecting rods connected to the step bars guarantee the synchronism in the up and down movement via the intended 90 ° pivot point, whereby At the final closing point, briefly immerse the push rods on both sides of the riser on both sides, as shown in Figure 10 at 33, under 41 there is a lock on the straight rung, which also shows the stabilization of the rod
- Figure 18 and Figure 19 show the bracket linkage 21 in a further preferred embodiment.
- the clamping linkage 21 has at its ends arc-shaped claws 50 which grip around the axle roller 5 in the unfolded state.
- the latching lugs 51 of each clamping rod part 21 engage in the recess 22 of the axle roller 5.
- the axle roller 5 is guided so that the recess 52 is exactly over the locking lugs 51 in the unfolded state.
- the size of the recess 52 is smaller than the outer dimensions of the latching lugs 51, so that when the conductors are folded out, the latching lugs 51 must be pressed into the recess 42 and thus a firm connection is created.
Landscapes
- Ladders (AREA)
- Steps, Ramps, And Handrails (AREA)
Claims (6)
- Echelle pliable avec des échelons (3) pliables, qui montrent un 90°C-pivot (4) environ au milieu, les échelons (3) etant installés dans les montants (1) aussi pivotablement de 90° par un joint (9) au bout de l'axe de l'échelon,
caractérisée en ce que
des tringles de poussée (2) sont installées à droite et à gauche aux échelons (3) en liant les échelons à distance du joint (9) au bout de l'axe de l'échelon dans les montants (1) réalisés comme des rails. - Echelle pliable selon revendication 1,
caractérisée en ce que
les montants (1) sont rivés dans chaque échelon à distance du joint (6) au bout de l'axe de l'échelon. - Echelle pliable selon revendication 1 ou 2,
caractérisée en ce que
les points de support au milieu des montants s'ajustent exactement en restant par les rouleaux de distance (5), en stabilisant au bord de marche, et en ce que l'extrémité touchante se trouve dans le montant au point de pliage (7) du joint au bout de l'axe de l'échelon. - Echelle pliable selon une des revendications 1 à 3,
caractérisée en ce que
l'échelle est pliable latéralement en barre cubique (17) et en ce qu'enfin l'échelle peut être bloquée par un dispositif de fermeture (20). - Echelle pliable selon une des revendications 1 à 4,
caractérisée en ce que
l'écartement des côtés en particulier dans l'échelon le plus bas (3) encliquète au support central par les tringles de cramponnage (21) par le support central (27) dans le rouleau de distance (5), la position de l'extrémité (28) assurant le point de distance au goujon de bloquage (30) contre une distorsion. - Echelle pliable selon une des revendications précédente
caractérisée en ce que
les tringles de cramponnage (21) montrent des griffes (50) voutées aux bouts et à chaque part des tringles de cramponnage (21) un nez à encliqueter (51) est disposé, qui peut être pressé dans un enfoncement (52) du rouleau de distance (5) en état déplié.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88115651T ATE75293T1 (de) | 1987-10-06 | 1988-09-23 | Zusammenfaltbare steigleiter. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873733702 DE3733702A1 (de) | 1987-10-06 | 1987-10-06 | Zusammenfaltbare steigleiter |
DE3733702 | 1987-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0310884A1 EP0310884A1 (fr) | 1989-04-12 |
EP0310884B1 true EP0310884B1 (fr) | 1992-04-22 |
Family
ID=6337688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88115651A Expired - Lifetime EP0310884B1 (fr) | 1987-10-06 | 1988-09-23 | Echelle repliable |
Country Status (9)
Country | Link |
---|---|
US (1) | US4842099A (fr) |
EP (1) | EP0310884B1 (fr) |
JP (1) | JPH01239287A (fr) |
KR (1) | KR890006949A (fr) |
AT (1) | ATE75293T1 (fr) |
AU (1) | AU615480B2 (fr) |
CA (1) | CA1296688C (fr) |
DE (2) | DE3733702A1 (fr) |
ES (1) | ES2032918T3 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5158151A (en) * | 1992-01-21 | 1992-10-27 | Chang Wan Li | Bidirectionally foldable step ladder |
US5195610A (en) * | 1992-05-04 | 1993-03-23 | Wan Li Chang | Bidirectionally foldable step ladder |
CH686317A5 (de) * | 1992-05-08 | 1996-02-29 | Wan Li Chang | Verriegelungsvorrichtung fuer bidirektional zusammenlegbare Trittleitern. |
AU667980B2 (en) * | 1992-11-26 | 1996-04-18 | Michael Mulawa | Toy surfing device |
DE9406506U1 (de) * | 1994-04-19 | 1995-08-17 | Kunz, Markus, 66646 Marpingen | Treppe, insbesondere Dachboden-Treppe |
US6536558B2 (en) | 2001-02-16 | 2003-03-25 | Harold E. Price | Folding ladder |
FR2928393B1 (fr) * | 2008-03-07 | 2015-07-24 | Larbaletier | Plate-forme d'observation pliable et procede de montage |
CN112572562B (zh) * | 2020-12-05 | 2021-11-23 | 乐山职业技术学院 | 一种书籍转运器 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US610284A (en) * | 1898-09-06 | schubert | ||
US958732A (en) * | 1908-03-06 | 1910-05-24 | Dennis Novelty Ladder Company | Ladder. |
GB191010778A (en) * | 1910-05-02 | 1910-09-15 | Flora Williams Smith | Improvements in Foldable Ladders. |
US1371125A (en) * | 1918-01-05 | 1921-03-08 | Jr Herman Frank Speckman | Folding ladder |
US2670120A (en) * | 1949-05-16 | 1954-02-23 | Sanguineti Emanuele | Collapsible ladder, double ladder, and stepladder |
FR1139461A (fr) * | 1955-12-02 | 1957-07-01 | échelle articulée | |
US2981364A (en) * | 1959-07-13 | 1961-04-25 | Webber Jack | Folding ladder |
BE587304A (fr) * | 1959-10-21 | 1960-05-30 | Battista Lamberti | Echelle à éléments repliables les uns sur les autres. |
US3084760A (en) * | 1960-01-18 | 1963-04-09 | Lamberti Battista | Stepladder with folding elements |
AT239066B (de) * | 1963-05-16 | 1965-03-10 | Johann Tretina | Als Anlege- oder Stehleiter verwendbare Leiter |
FR1403008A (fr) * | 1964-04-27 | 1965-06-18 | Perfectionnements aux échelles et escaliers portatifs analogues | |
FR2428138A1 (fr) * | 1978-06-09 | 1980-01-04 | Stoltz Gerard | Echelle pliante |
DE3320519A1 (de) * | 1983-06-07 | 1984-12-13 | Karl 4400 Münster Kemper | Faltleiter |
US4560030A (en) * | 1984-05-04 | 1985-12-24 | Metarplastic S.P.A. | Folding ladder |
IT8552842V0 (it) * | 1985-01-14 | 1985-01-14 | Pro Cord Srl | Scala a pioli pieghevole a tre montanti |
-
1987
- 1987-10-06 DE DE19873733702 patent/DE3733702A1/de active Granted
- 1987-12-10 US US07/131,628 patent/US4842099A/en not_active Expired - Fee Related
-
1988
- 1988-09-23 AT AT88115651T patent/ATE75293T1/de active
- 1988-09-23 EP EP88115651A patent/EP0310884B1/fr not_active Expired - Lifetime
- 1988-09-23 ES ES198888115651T patent/ES2032918T3/es not_active Expired - Lifetime
- 1988-09-23 DE DE8888115651T patent/DE3870386D1/de not_active Expired - Fee Related
- 1988-10-04 AU AU23406/88A patent/AU615480B2/en not_active Ceased
- 1988-10-05 CA CA000579374A patent/CA1296688C/fr not_active Expired - Lifetime
- 1988-10-06 KR KR1019880013050A patent/KR890006949A/ko not_active Application Discontinuation
- 1988-10-06 JP JP63251022A patent/JPH01239287A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH01239287A (ja) | 1989-09-25 |
ES2032918T3 (es) | 1993-03-01 |
ATE75293T1 (de) | 1992-05-15 |
US4842099A (en) | 1989-06-27 |
AU615480B2 (en) | 1991-10-03 |
AU2340688A (en) | 1989-04-06 |
DE3733702C2 (fr) | 1990-10-31 |
DE3733702A1 (de) | 1989-05-03 |
EP0310884A1 (fr) | 1989-04-12 |
KR890006949A (ko) | 1989-06-17 |
CA1296688C (fr) | 1992-03-03 |
DE3870386D1 (de) | 1992-05-27 |
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