EP0108155A1 - Echelle pliante - Google Patents

Echelle pliante Download PDF

Info

Publication number
EP0108155A1
EP0108155A1 EP82110080A EP82110080A EP0108155A1 EP 0108155 A1 EP0108155 A1 EP 0108155A1 EP 82110080 A EP82110080 A EP 82110080A EP 82110080 A EP82110080 A EP 82110080A EP 0108155 A1 EP0108155 A1 EP 0108155A1
Authority
EP
European Patent Office
Prior art keywords
scissors
scissor
link
support
riser
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.)
Granted
Application number
EP82110080A
Other languages
German (de)
English (en)
Other versions
EP0108155B1 (fr
Inventor
Peter Hechler
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.)
Helm Geb Neundorfer Cacilia
Original Assignee
Helm Geb Neundorfer Cacilia
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 Helm Geb Neundorfer Cacilia filed Critical Helm Geb Neundorfer Cacilia
Priority to AT82110080T priority Critical patent/ATE23599T1/de
Priority to EP82110080A priority patent/EP0108155B1/fr
Publication of EP0108155A1 publication Critical patent/EP0108155A1/fr
Application granted granted Critical
Publication of EP0108155B1 publication Critical patent/EP0108155B1/fr
Expired legal-status Critical Current

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
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/423—Ladder stabilising struts

Definitions

  • the invention relates to a stepladder with at least one riser, consisting of two risers with steps arranged between them, on which a support leg having two support bars is hinged by means of a pair of scissors connecting a riser with the associated support bar, which consists of two scissor links connected in a scissor joint , and with at least one laterally fold-out side support, which is connected to the scissors via at least one link.
  • step ladders To increase the stability of step ladders in the lateral direction, it is known to provide laterally fold-out side supports (DE-GM 74 03 9 07 ), the side supports being freely pivotable and foldable. Compared to this construction, a significant improvement in stability was sought in that the side supports are automatically and inevitably unfolded when the stepladder is opened. To this end was proposed in a stepladder of the type mentioned at the outset (patent application P 3 0 16 264.2) to connect the side support via a link with scissors known per se, which formed the one riser of the ladder with the second riser Support leg connecting the ladder.
  • the articulated axes of the scissors run horizontally in a known manner, i. H. the scissor links move in the vertical plane in which the folding of the ladder parts takes place.
  • the link attached to the side support is articulated on the side of the scissor joint. Therefore, this link member of the side support can give little stability transversely to the folding movement of the side support, i. H. the side support is relatively unstable to the front and back; Forces exerted in this direction, for example when moving the conductors, act as bending forces at the articulation points, which can lead to increased wear or damage.
  • the forces transmitted from the side support via the link member act transversely to the level of the scissors and therefore act as bending forces in the scissor joint and at the articulation points of the scissors, i. H. if a lateral force is exerted on the side support, the scissor links are pressed inwards or outwards from their plane and possibly even deformed.
  • the invention is therefore based on the object of designing a stepladder of the type mentioned at the outset in such a way that very stable guidance and securing of the side support or supports is achieved by relatively light and space-saving components.
  • the scissors are articulated and horizontally movable with vertical joint axes on the riser, on the support beam and in the scissor joint, and in that two horizontal link members articulated with a common vertical joint axis on the side support diverging into one each between the articulation points of each The articulation point lying on the scissor link runs with a vertical joint axis.
  • the scissors designed in this way move in the horizontal direction, as do the two links that lead to the side support.
  • the scissor members and the link members made of relatively thin flat material, none of these components is stressed transversely to its surface plane; this avoids bending stresses on the joints.
  • the diverging link members form a stable support for the side support, so that the side support that is automatically expanded when the stepladder is opened remains stable in its specified position when subjected to loads from any direction.
  • the scissor links and the link links linked to them are moved inwards when the stepladder is closed and therefore do not interfere.
  • the scissors or the scissors are or are arranged just below the safety bridge. In this area, the scissors and the handlebar links do not interfere even when opened.
  • the bridge lifter for the safety bridge also takes on the function of the spreading device. Since the scissors in this embodiment are in the immediate vicinity of the spreading protection thus formed, the scissors are held in a particularly secure manner in the opened state; Even strong lateral forces that could be exerted on the side support cannot change the spreading angle of the stepladder.
  • the scissor links are articulated in the vertical direction on the riser and on the support leg with an angular play corresponding to at least half the spreading angle of the stepladder placed. This takes into account the fact that when the step ladder is opened, the angle between the support bar or the step bar and the horizontal plane receiving the scissors changes, in each case by a maximum of half the spreading angle of the step ladder.
  • the step ladder which can be climbed on one side and is shown in FIG.
  • the riser 1 consists of two risers 4 with steps 5 arranged therebetween; the risers 4 are connected at their upper end by a bracket 6.
  • the support leg 2 consists of two support bars 7 which are connected to one another by an upper and a lower cross strut 8.
  • a safety bridge 9 is located between the riser leg 1 and the support leg 2 in the upper region of the ladder, which is actuated by a bridge lifter (not shown) arranged underneath, which at the same time forms the spreading protection.
  • two lateral, disk-shaped cheeks 10 are arranged on the risers 4, between which the upper ends of the support bars 7 are pivotably mounted.
  • a hinge pin 11 is inserted through the outer cheek 10 and fastened on the inside with a split pin 12 which has a horizontal hinge axis 13 for a side support 14 which is folded out laterally when the stepladder is opened.
  • the uprights 4 are each connected to the support spars 7 (FIGS. 3 and 4) by means of scissors 15, which consist of two scissor members 17 made of flat material and connected to one another in a scissor joint 16.
  • the scissor members 17 are at hinge points 18 in essence Liclien vertical gel axis, but a certain angular play in the vertical direction, angelenlct on the uprights 4 and 7 on the support bar. .
  • the scissor links 17 assume an almost extended position.
  • a link member 20 is articulated in each case on a hinge point 19 with a vertical hinge axis, which lies between the scissor hinge and the hinge point 18. Both link members 20 are jointly articulated at a hinge point 21 with a vertical hinge axis on the side support 14.
  • the scissors 15 are located just below the safety bridge 9.
  • the two scissors 15 move in a horizontal plane against each other inward to the position shown in Fig. 4 ⁇ , the side supports 14 through the handlebar members 20 are pulled inwards until they are practically in contact with the folded uprights 4 and support bars 7.
  • the fold-out angle of the side support 14 can be chosen to be larger or smaller.
  • the side supports 14 can be designed to be removable, with easily detachable connections also being provided in the articulation points 19, for example.
  • the articulation of the side supports 14 can also take place at another location, for example on the riser 4 above or below the articulation point 3.
  • Fig. 4 is indicated at "S" with dash-dotted lines only on part of the scissors 15 that the scissor members 17 and the link members 20 can also be curved so that in the collapsed state of the scissors there are still enough wide spaces between the scissor members to avoid the risk of fingers getting caught.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP82110080A 1982-11-02 1982-11-02 Echelle pliante Expired EP0108155B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT82110080T ATE23599T1 (de) 1982-11-02 1982-11-02 Stehleiter.
EP82110080A EP0108155B1 (fr) 1982-11-02 1982-11-02 Echelle pliante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82110080A EP0108155B1 (fr) 1982-11-02 1982-11-02 Echelle pliante

Publications (2)

Publication Number Publication Date
EP0108155A1 true EP0108155A1 (fr) 1984-05-16
EP0108155B1 EP0108155B1 (fr) 1986-11-12

Family

ID=8189316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110080A Expired EP0108155B1 (fr) 1982-11-02 1982-11-02 Echelle pliante

Country Status (2)

Country Link
EP (1) EP0108155B1 (fr)
AT (1) ATE23599T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207176A (en) * 1987-07-15 1989-01-25 Trevor Perry Support apparatus
CN108528752A (zh) * 2018-06-04 2018-09-14 四川航泰航空装备有限公司 一种通用后舱工作梯

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH90932A (de) * 1921-02-03 1921-10-01 Lino Brunner Sicherung an Bockleitern.
US1942849A (en) * 1933-08-29 1934-01-09 Ned L Thrasher Stepladder brace
US2718346A (en) * 1953-01-26 1955-09-20 Galen Max Ladders
EP0039078A2 (fr) * 1980-04-26 1981-11-04 Adam Klenk Echelle double

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH90932A (de) * 1921-02-03 1921-10-01 Lino Brunner Sicherung an Bockleitern.
US1942849A (en) * 1933-08-29 1934-01-09 Ned L Thrasher Stepladder brace
US2718346A (en) * 1953-01-26 1955-09-20 Galen Max Ladders
EP0039078A2 (fr) * 1980-04-26 1981-11-04 Adam Klenk Echelle double

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207176A (en) * 1987-07-15 1989-01-25 Trevor Perry Support apparatus
CN108528752A (zh) * 2018-06-04 2018-09-14 四川航泰航空装备有限公司 一种通用后舱工作梯
CN108528752B (zh) * 2018-06-04 2023-08-18 四川航泰航空装备有限公司 一种通用后舱工作梯

Also Published As

Publication number Publication date
EP0108155B1 (fr) 1986-11-12
ATE23599T1 (de) 1986-11-15

Similar Documents

Publication Publication Date Title
DE2637215C3 (de) Ortsbewegliche Bühne
DE2648951C3 (de) Fahrzeugsitz
DE2801863C3 (de) Hebevorrichtung mit wenigstens einem Scherenkreuz
DE29805112U1 (de) Zusammenklappbarer Kinderwagen
CH664121A5 (de) Zusammenfaltbarer kindersportwagen.
CH687379A5 (de) Uebergangseinrichtung zwischen zwei gekuppelten Fahrzeugen.
DE2239868A1 (de) An einem zusammenlegbaren ausleger angebrachte begehvorrichtung
EP1319771B1 (fr) Store, notamment store à bras articulés
DE2831286A1 (de) Einrichtung zum vollstaendigen zusammenlegen oder ausfalten des aus zwei gelenkelementen bestehenden auslegers eines teleskopmastkrans
EP0356761B1 (fr) Dispositif de levage à ciseaux, en particulier pour une plate-forme de travail
DE3105149C2 (de) Abstützvorrichtung für Bagger, Kräne o.dgl.
DE19837987C2 (de) Tisch
EP0108155B1 (fr) Echelle pliante
DE3016264C2 (de) Stehleiter
DE3305342A1 (de) Begehbares geruestelement
EP0066567B1 (fr) Grue pouvant être montée sur un camion
DE2604141C3 (de) Hub-Arbeitsbühne
EP1229209B1 (fr) Escabeau pliant
EP0097733B1 (fr) Escabeau verrouillable
DE3117157A1 (de) Stehleiter
DE2111140C3 (de) Faltbare Leiter
DE8702290U1 (de) Wagenheber
DE29707364U1 (de) Geländer für eine Bodentreppe
DE2506109C3 (de) Gelenk für Stehleitern o.dgl
DE60033731T2 (de) Tritthocker oder Trittleiter mit einer in der Mitte gelenkigen Plattform

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19841115

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19861112

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19861112

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19861112

Ref country code: BE

Effective date: 19861112

REF Corresponds to:

Ref document number: 23599

Country of ref document: AT

Date of ref document: 19861115

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19861130

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19871102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19871130

Ref country code: CH

Effective date: 19871130

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881122