EP0000499A1 - Ferrure d'articulation pour échelles - Google Patents

Ferrure d'articulation pour échelles Download PDF

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Publication number
EP0000499A1
EP0000499A1 EP78100364A EP78100364A EP0000499A1 EP 0000499 A1 EP0000499 A1 EP 0000499A1 EP 78100364 A EP78100364 A EP 78100364A EP 78100364 A EP78100364 A EP 78100364A EP 0000499 A1 EP0000499 A1 EP 0000499A1
Authority
EP
European Patent Office
Prior art keywords
locking
fitting
fitting part
bores
guide pin
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
EP78100364A
Other languages
German (de)
English (en)
Other versions
EP0000499B1 (fr
Inventor
Ulrich Dr.-Ing. Klafs
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.)
Zarges Leichtbau GmbH
Original Assignee
Zarges Leichtbau GmbH
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
Priority claimed from DE2732654A external-priority patent/DE2732654C3/de
Priority claimed from DE19787811073 external-priority patent/DE7811073U1/de
Application filed by Zarges Leichtbau GmbH filed Critical Zarges Leichtbau GmbH
Publication of EP0000499A1 publication Critical patent/EP0000499A1/fr
Application granted granted Critical
Publication of EP0000499B1 publication Critical patent/EP0000499B1/fr
Expired 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
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1007—Devices for preventing movement between relatively-movable hinge parts with positive locking
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass

Definitions

  • the invention relates to an articulated fitting that can be automatically locked in at least one angular position for two conductor parts, consisting of two fitting parts fastened to the spar ends and pivotable about a common axis, with one fitting being able to counteract the force of a return spring from one on the first fitting part Locking position in an unlocking and a locking position parallel to the hinge axis movable locking element is mounted, while in the second fitting part for each selectable angular position a bore parallel to the hinge axis is provided for receiving the locking element in the locking position, and the locking element by a Lock is held in the unlocked position first in the locked position and then after pivoting one fitting part relative to the other by the arc sections between the bores of the second fitting part.
  • each bore is assigned an element of two parts of the locking mechanism, of which one element is formed directly on the locking element, the at least one locking bolt and a guide pin coinciding with the joint axis has, which is constantly under the action of the return spring and has at its free end at least one axial projection which can be brought into engagement with the element of the locking mechanism associated with the bore in the second fitting part.
  • a bow-shaped locking element has two diametrically opposed locking bolts and a central, with the hinge axis coinciding guide pin, which is under the action of the return spring and has at its free end two axial projections which are associated with the pair of holes in the second fitting part Part of the ratchet can be brought into engagement.
  • the guide pin can have arms at its free end with projections which can be inserted into the bores and which can be inserted in alignment with the bores from the free side of the second fitting part opposite the locking bolts.
  • the locking bracket is rotatably mounted on the first fitting part and forms part of the locking mechanism, while the other part of the locking mechanism is fixed in the axial direction with respect to the second fitting part.
  • the locking mechanism can comprise a resilient element engaging in a recess or a magnet arrangement.
  • the locking mechanism or the locking bracket can be moved into the locked position as soon as it has reached the end of the unlocking movement without great effort.
  • the adjacent conductor parts are then pivoted relative to one another, as a result of which the projections are pressed outward and the locking mechanism is opened.
  • the locking bracket leaves the locked position as soon as the projections and, accordingly, the bolts no longer completely align with the bores and the bolts have reached the curved section of the second fitting part next to the bores. When the next pair of holes is reached, the locking bolts automatically jump into the holes that correspond to the next locking position.
  • hollow profile spars 10 and 11 are provided, on which the parts 12 and 13 of the hinge fitting are attached.
  • the fitting parts 12 and 13 have legs 15 to be fastened to the hollow profile spars 10 and 11 by means of screws or rivets 14.
  • the fitting parts 12 and 13 can consist of two essentially congruent disks 16 and 17 which have central bores with which they are pivotally mounted on a socket 1 about a common axis 21.
  • the bushing 1 has an interior space 2 that is open on the side of the second fitting part 13 and an outer circumferential flange 3 at the open end that bears against the free surface of the second fitting part 13.
  • the two fitting parts 12 and 13 are held together by the flange 3 and a ring 4, which is attached to the socket 1.
  • a spring ring 4 is inserted into a groove 5.
  • the bushing 1 On the side adjacent to the groove 5, the bushing 1 has a base 7 with a through hole 6 for a guide pin 46.
  • two diametrically opposite bores 30 are provided in the disk 17. 1 to 3 are aligned with the bores 30 in the disk 17 bearing bores 23 in the disk 16 of the first fitting part 12.
  • a locking bolt 44 is inserted through each of the bores 30 and 23, the two Locking bolts 44 are attached to a locking bracket 45.
  • the bracket 45 has in the region of the hinge axis 21 the through the through hole 6 guide pin 46, which is enclosed by a return compression spring 25, which is arranged in the interior 2 and is supported on the one hand on the bottom 7 and on the other hand on a sleeve 60 which is attached to the free end of the guide pin 46.
  • the sleeve 60 has a cylindrical peripheral surface 61, with which the sleeve 60 is slidably guided in the interior 2 of the socket 1. Continuing the interior 2, the sleeve 60 has a central recess 62 in which the compression spring 25 is supported and guided. Two diametrically opposite, radially protruding arms 63 are attached to the free end of the sleeve 60 protruding from the bushing 1. ordered, at the free ends of which a projection 64 is formed. The projections 64 are aligned with the locking bolts 44 and their tips are at a distance from the free end faces 57 of the locking bolts 44 which corresponds to the thickness of the washer 17 of the second fitting part 13 or is slightly larger than this thickness.
  • the sleeve 60 is rotatably connected to the guide pin 46, so that the locking bracket 45 with the locking bolt 44 and the sleeve 60 with the arms 63 and the projections 64 form a rigid unit which is axially opposite the two fitting parts 12 and 13 is adjustable and is arranged in a rotationally fixed manner with respect to the first fitting part 12 due to the locking bolts 44 always engaging in the bores 23.
  • the spring 25 presses the bracket 45 against the bottom 7 of the bushing, the locking bolts 44 projecting through the mutually aligned bores 23 and 30.
  • the projections 64 are lifted from the second fitting part 13 accordingly.
  • the rigid locking unit 2 and 3 to the right - can be pulled on the bracket 45 or one presses in the same direction on the sleeve 60 or a plate 66 which concentrically surrounds the sleeve 60 and encloses the arms 63 .
  • the projections 64 can be fastened diametrically opposite one another directly on the pressure plate 66.
  • the locking mechanism comprises a magnet arrangement, an annular or otherwise designed permanent magnet 67 being fastened to the disk 17 of the second fitting part 13.
  • the arms 63, 63 or the pressure plate 66 have or form the armature of the magnet arrangement 66, 67.
  • the permanent magnet 67 can be arranged on the pressure plate 66, while the disk 17 forms or has the armature.
  • the guide pin 46 in the region of the base 7 is only provided with a recess 56, which is an annular groove in the exemplary embodiment shown.
  • a recess 56 which is an annular groove in the exemplary embodiment shown.
  • a slot 8 running perpendicular to the axis 21, in which a spring 9 is mounted.
  • the spring is hairpin-shaped in this embodiment, the rod cross section being circular and thus adapted to the cross section of the annular groove.
  • the spring 9 can also be designed as a helix which lies in the annular groove 56 and can escape into a corresponding annular slot in the base 7 when the guide pin 46 is adjusted in the through hole 6 relative to the base 7.
  • the disks 16 and 17 are essentially congruent and have central bores with which they are pivotally mounted on a bushing 71 about a common axis 21.
  • the fitting parts 12 and 13 expediently consist of identical shaped sheets 15/16 and 15/17, two shaped sheets 15/16 each being arranged on the outside and in between a package of four shaped sheets 15/17.
  • the outer molded sheets 15/16 can be firmly connected to the first fitting part 12 by sleeves, hollow rivets or the like 68 and with the interposition of spacers 69, while the molded sheet package 15/17 forms the second fitting part 13 ′.
  • the bushing 71 has an interior space 72 that is open on one side and at the closed end an outer circumferential flange 73 that bears against one of the free surfaces of the first fitting part 12.
  • the bushing 71 is axially fixed by the flange 73 and a ring 74 which is fastened in the region of the open end of the bushing 71.
  • a spring ring 74 is inserted into a groove 75.
  • the bushing 71 On the side adjacent to the flange 73, the bushing 71 has a base 77 with a through hole 76 for a guide pin 46.
  • two diametrically opposite bores 30 are provided in the disk 17. 4 and 5 and the blocking position are aligned with the bores 30 in the washer 17 bearing bores 23 in the washer 16 of the first fitting part 12.
  • a locking bolt 44 is inserted through the bores 30 and 23, the two locking bolts 44 are attached to a locking bracket 45.
  • the bracket 45 has in the region of the hinge axis 21 the guide pin 46 which extends through the through hole 76 and is enclosed by a restoring compression spring 25 which is arranged in the interior 72 and is supported on the one hand on the bottom 77 and on the other hand on a plate 70 which is fastened to the free end of the guide pin 46.
  • the plate 70 closes off the interior and has two projections 80 projecting into it, diametrically opposite one another.
  • the projections 80 are assigned to the locking bolts 44 and their heads have an axial distance of at least the thickness from at least one stop 81 arranged within the bushing 71 of two shaped plates 15/16 of the first fitting part plus that of four shaped plates 15/17 of the second fitting part 13 corresponds to or is slightly larger than this thickness.
  • the plate 70 is rotatably connected to the guide pin 46, so that the locking bracket 45 with the locking bolt 44 and the plate 70 with the projections 80 form a rigid unit which is axially adjustable relative to the two fitting parts 12 and 13 and by which always in the Bracket 45 adjacent bores 23 engaging locking bolt 44 is rotatably arranged with respect to the first fitting part 12.
  • the bushing 71 is secured in a rotationally fixed manner by means of an external rib 82 with respect to the second fitting part 13, which has a corresponding groove 83 in the mold plates 15/17, which can also be provided in the mold plates 15/16 for production reasons.
  • the spring 25 presses the bracket 45 against the bottom 77 of the bushing 71, the locking bolts 44 projecting through the mutually aligned bores 23 and 30.
  • the projections 80 are lifted accordingly from the verbun with the second fitting part 13 stop 81.
  • two projections 80 lie diametrically opposite one another and are aligned with the locking bolts 44.
  • Two pairs of holes 23 and 30 are provided in each of the shaped plates 15/16 and 15/17, which are arranged at an angle of 30 °, in FIG.
  • the pairs of holes in the second fitting part 1.3 are designated 30 and 30 '. It is readily apparent that a total of four different locking positions or angular positions between the bars 10 and 11 can be set.
  • two stops 81 are arranged in the interior 72 of the bushing 71, each of which is located approximately in the middle between two adjacent bores 30 - FIG. 4.
  • the guide pin 46 is provided with a flat annular groove 56.
  • a slot 78 running perpendicular to the axis 21, in which a spring 79 is mounted.
  • the spring 79 is hairpin-shaped in this exemplary embodiment, the rod cross section being circular and thus adapted to the cross section of the annular groove 56.
  • the spring 79 can also be designed as a helix, which lies in the locking position in the annular groove 56 and can escape into a corresponding annular slot in the base 77 when the guide pin 46 is adjusted in the through hole 76 relative to the base 77.
  • the rigid locking unit is moved in the manner described - according to FIGS. 2, 3 and 5 to the right - by applying an axial pressure to the plate 66 or the plate 70 or to the locking bracket 45 an axial pull is exerted.
  • these are completely moved out of the bores 30 until the pressure plate 66 comes into engagement with the permanent magnet 67 or the spring 9 jumps into the finger groove 56.
  • 4 and 5 they are completely moved out of the bores 23 of the disks 16 facing away from the bracket 45 and the bores 30 of the disks 17 until the spring 79 jumps into the annular groove 56.
  • the rigid locking unit has completely passed through the unlocking position and is fixed in the locked position.
  • the bolts 44 have left the bores 30, and the free end faces 57 of the bolts 44 are located somewhat above the contact surface 59 between the washers 16 and 17 of the fitting parts 12 and 13 or between the washers 16, which are on the Side of the bracket 45, and the washer package 17 of the second fitting part 13.
  • the conductor parts 10 and 11 can be pivoted comfortably, the locking bracket 45 being carried along in that the bolt 44 in the bores 23 of the Bracket 45 facing disk 16 of the first fitting part 12 are guided.
  • the conical taper 84 spreads the spring 79 when unlocking and supports the action of the return compression spring 25 when locking this compression spring 25, the locking bolts 44 are moved in the direction of the contact surface 59 until their free end surfaces 57 rest on the contact surface 59, which has a closed arc section between the bores 30 and the adjacent bores 30 '.
  • This unlocking position of the locking unit allows the conductor parts 10 and 11 to be pivoted without hindrance until the locking bolts 44 are exactly aligned with the bores 30 'and under the action of the return spring 25 into the bores 30' and the bores 23 of that Brackets 45 facing away from the panes. This movement is not hindered by the locking mechanism.
  • the locking unit then assumes the locking position in the new angular position. If the multipurpose ladder is to be returned to the starting position according to FIG. 1 or 4, then only the locking unit needs to be moved in the manner described until the locking position is reached. The conductor parts 10 and 11 are then pivoted in the opposite direction.
  • the number of selectable angular positions of the conductor parts 10 and 11 is not limited to four, but can be done in the simplest way by the number of pairs of bores 30, 30 'in the disks 17 of the second fitting part 13 and according to FIGS. 4 and 5 of bores 23 in the disks 16 of the first fitting part 12 facing away from the bracket 45. Only a pair of bores 23 need be provided in the washer 16 of the first fitting part 12 facing the bracket 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Ladders (AREA)
EP78100364A 1977-07-20 1978-07-11 Ferrure d'articulation pour échelles Expired EP0000499B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2732654 1977-07-20
DE2732654A DE2732654C3 (de) 1977-07-20 1977-07-20 Gelenkbeschlag für Leiteiteile
DE19787811073 DE7811073U1 (de) 1978-04-13 1978-04-13 Gelenkbeschlag fuer leiterteile
DE7811073U 1978-04-13

Publications (2)

Publication Number Publication Date
EP0000499A1 true EP0000499A1 (fr) 1979-02-07
EP0000499B1 EP0000499B1 (fr) 1980-10-29

Family

ID=25772356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100364A Expired EP0000499B1 (fr) 1977-07-20 1978-07-11 Ferrure d'articulation pour échelles

Country Status (2)

Country Link
EP (1) EP0000499B1 (fr)
JP (1) JPS5422269A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324885A1 (fr) * 1988-01-22 1989-07-26 Haison Yuen Echelle pliante transformable
FR2659110A1 (fr) * 1990-03-02 1991-09-06 Vuillemenot Bertrand Escabeau articule.
EP0457703A1 (fr) * 1990-05-18 1991-11-21 Bertrand Vuillemenot Escabeau articulé
DE4032283A1 (de) * 1990-10-11 1992-04-16 Rauschenberger Metallwaren Gmb Gelenk, insbesondere zur verbindung der leiterholme einer zusammenklappbaren mehrzweckleiter
EP1043509A3 (fr) * 1999-04-03 2001-08-29 Wanzl Metallwarenfabrik Gmbh Joint pour former un cadre
US6711780B2 (en) * 2001-08-22 2004-03-30 Sinclair Worldwide, Inc. Hinge for collapsible ladders
EP1455050A1 (fr) * 2003-03-05 2004-09-08 Firma Zarges GmbH & Co. KG Echelle et articulation pour échelle
DE102007059510B3 (de) * 2007-12-07 2009-02-26 Keiper Gmbh & Co.Kg Element für einen Fahrzeugsitz
CN103047269A (zh) * 2012-12-28 2013-04-17 广西柳工机械股份有限公司 铰链
DE102013009564A1 (de) * 2013-06-06 2014-12-11 Liebherr-Werk Biberach Gmbh Vorrichtung zum Verbinden von Profilelementen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2605568B2 (ja) * 1992-12-11 1997-04-30 コクヨ株式会社 脚 立
JP2512498Y2 (ja) * 1993-09-13 1996-10-02 アルインコ株式会社 折り畳み式梯子の関節装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2321346A1 (de) * 1973-04-27 1974-10-31 Walter Kuemmerlin Gelenkbeschlag fuer klappbare leitern
DE2457637A1 (de) * 1974-12-06 1976-06-10 Bahmueller Masch W Gelenk, insbesondere zur verbindung der leiterholme einer zusammenklappbaren mehrzweckleiter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2321346A1 (de) * 1973-04-27 1974-10-31 Walter Kuemmerlin Gelenkbeschlag fuer klappbare leitern
DE2457637A1 (de) * 1974-12-06 1976-06-10 Bahmueller Masch W Gelenk, insbesondere zur verbindung der leiterholme einer zusammenklappbaren mehrzweckleiter

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324885A1 (fr) * 1988-01-22 1989-07-26 Haison Yuen Echelle pliante transformable
FR2659110A1 (fr) * 1990-03-02 1991-09-06 Vuillemenot Bertrand Escabeau articule.
EP0457703A1 (fr) * 1990-05-18 1991-11-21 Bertrand Vuillemenot Escabeau articulé
DE4032283A1 (de) * 1990-10-11 1992-04-16 Rauschenberger Metallwaren Gmb Gelenk, insbesondere zur verbindung der leiterholme einer zusammenklappbaren mehrzweckleiter
EP1043509A3 (fr) * 1999-04-03 2001-08-29 Wanzl Metallwarenfabrik Gmbh Joint pour former un cadre
US6711780B2 (en) * 2001-08-22 2004-03-30 Sinclair Worldwide, Inc. Hinge for collapsible ladders
EP1455050A1 (fr) * 2003-03-05 2004-09-08 Firma Zarges GmbH & Co. KG Echelle et articulation pour échelle
DE102007059510B3 (de) * 2007-12-07 2009-02-26 Keiper Gmbh & Co.Kg Element für einen Fahrzeugsitz
DE102007059510C5 (de) * 2007-12-07 2011-05-12 Keiper Gmbh & Co. Kg Element für einen Fahrzeugsitz
CN103047269A (zh) * 2012-12-28 2013-04-17 广西柳工机械股份有限公司 铰链
DE102013009564A1 (de) * 2013-06-06 2014-12-11 Liebherr-Werk Biberach Gmbh Vorrichtung zum Verbinden von Profilelementen
CN105518313A (zh) * 2013-06-06 2016-04-20 利勃海尔比伯拉赫有限公司 用于连接型材元件的设备
CN105518313B (zh) * 2013-06-06 2018-12-25 利勃海尔比伯拉赫有限公司 用于连接型材元件的设备

Also Published As

Publication number Publication date
JPS5422269A (en) 1979-02-20
EP0000499B1 (fr) 1980-10-29

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