EP0099513A2 - Assemblage d'échelons et montant pour une échelle en métal léger - Google Patents

Assemblage d'échelons et montant pour une échelle en métal léger Download PDF

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Publication number
EP0099513A2
EP0099513A2 EP83106596A EP83106596A EP0099513A2 EP 0099513 A2 EP0099513 A2 EP 0099513A2 EP 83106596 A EP83106596 A EP 83106596A EP 83106596 A EP83106596 A EP 83106596A EP 0099513 A2 EP0099513 A2 EP 0099513A2
Authority
EP
European Patent Office
Prior art keywords
spar
recesses
profile
connection
leg
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
EP83106596A
Other languages
German (de)
English (en)
Other versions
EP0099513B1 (fr
EP0099513A3 (en
Inventor
Fritz Lang
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.)
Hymer Leichtmetallbau GmbH and Co KG
Original Assignee
Hymer Leichtmetallbau GmbH and Co KG
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 Hymer Leichtmetallbau GmbH and Co KG filed Critical Hymer Leichtmetallbau GmbH and Co KG
Priority to AT83106596T priority Critical patent/ATE26152T1/de
Publication of EP0099513A2 publication Critical patent/EP0099513A2/fr
Publication of EP0099513A3 publication Critical patent/EP0099513A3/de
Application granted granted Critical
Publication of EP0099513B1 publication Critical patent/EP0099513B1/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
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads

Definitions

  • the invention relates to a spar step connection in a light metal ladder according to the preamble of claim 1.
  • connection between the spar and the step is made by riveting in the connection area of the spar and step.
  • the disadvantage of this rivet connection is that the supporting cross-section of the spar is weakened by attaching the rivet holes and that the production of this rivet connection is relatively expensive and requires assembly. Own rivet feeding machines are required to feed the rivets to the assembly site for the connection.
  • the invention has for its object to form a spar step connection of the type mentioned so that it is easier to manufacture and improved in strength.
  • the invention is characterized in that the prebinding between the spar and tread consists of a latching connection with tabs of the spar which are latched into recesses in the tread.
  • the spar has mutually opposing legs on the inside, which are punched out in the area of the treads in such a way that tabs remain. Have in the area of this rag the steps slits into which the spar engages with its rags. A lower edge on the bottom of the recess in the web area of the spar serves as additional support for the step.
  • the assembly is done by a simple swiveling movement of the step opposite the spar.
  • the step is bent in the elastic area and then springs back into its original shape after it has snapped into place.
  • the tabs of the spar are pressed into the recesses after they have snapped into place and the recesses form closing heads which overlap on one side.
  • the tabs are riveted after they have snapped into place, without the need for separate rivets.
  • the spar consists of a mirror-symmetrical profile with respect to the longitudinal center axis, on the inner sides of which the legs are directed against one another and form longitudinal ribs, from the matorial of which the tabs divided by recesses are formed.
  • the spar is thus made, for example, from an extruded aluminum profile and the ribs formed on the inside of the legs are consequently made of one piece of material with the rest of the spar profile.
  • the spar 10 consists of a U-extruded profile with an outwardly directed spar wall 18, and lateral legs 12, 13, on the inside of which opposing, opposing ribs 14, 15 are formed.
  • the legs 12, 13 are continued downwards by cross-sections thickened by webs 16, 17.
  • tabs 19, 24 are provided in the area of the ribs 14, 15, which lie opposite one another and which are formed by recesses 21, 22 (tab 19) or by recesses 25, 26 made of the material of the ribs 14, 15 are divided.
  • the flaps 19, 24 lie diagonally opposite one another, the inclination resulting from the fact that, according to FIG. 1, the spar 10 itself is directed obliquely, so that the tread plane (step surface 6) of the step 1 to be fastened laterally is aligned horizontally.
  • the edge of the rib 14 is not straight, but rather has an undercut 23, into which the thickened web 5 of the step 1 engages in the engaged state according to FIG. 1.
  • edges of the recesses 22, 26 can be chamfered, as is shown in the example of the inclined surface 27 at the base of the recess 26 in FIG. 7.
  • step 1 also consists of a U-shaped extruded profile, preferably of an aluminum material, just like the spar.
  • the base leg is formed by the step surface 6, while the side legs 2, 8 are formed by mutually parallel, inclined surfaces.
  • the leg 2 is continued at its free, lower end by a web 5 thickened cross-section, while the leg 8 has an inward bend 9 at its lower, free end.
  • the upper recess 3 continues partially into the material of the step surface 6 of the step 1.
  • FIG. 1 shows the latching connection between the step 1 and the spar 10 in the latched state, and in dashed lines shortly before reaching the latching position.
  • the step 1 is placed with its recess 11 on the tab 24 of the spar 10 and pressed.
  • the leg 8 deforms elastically inwards.
  • the step 1 ' is then pivoted upwards in the direction of the arrow 28, so that on the one hand the tab 36 (FIG. 7) into the recess 3 engages and on the other hand the tab 19 in the recess 4 in the leg 2 of the step 1.
  • the previously described inclined surface 27 is arranged in the region of the rib 15 on the inside of the spar 10.
  • the flaps 19, 24 can then be processed with an upsetting tool, so that there is a closing head which extends beyond the recesses 3, 4, 11, so that the flaps 19, 24 are also made of one piece rivets connected to the profile of the spar can be addressed.
  • FIG. 8 shows a second exemplary embodiment of a connection between a spar 30 and a step 20.
  • a longer flap 24 according to FIG Engage recesses in the area of step 20.
  • the engagement takes place in the direction of arrow 29.
  • a tab 33 is provided which engages in the associated recess 2, while in the same way - as in FIG. 1 - there is a recess 3 in the area of the step 20 which is in a engages corresponding tab 36 of the spar 30, the tab 36 being formed by the profile of the rib 14.
  • Figure 9 shows the riveted tabs 31 ', 32', 33 '.
  • FIGS. 10 to 12 show a third exemplary embodiment, it being evident that the one flap 33 according to the exemplary embodiment according to FIG. 8 is replaced by two mutually parallel flaps 34, 35, while the flap 24 according to the exemplary embodiment according to FIGS 7 was retained.
  • the latching connection there between the step 40 and the spar 50 still has the special feature that instead of the flap 36, which is formed in one piece from the material of the web 14, the second flap 34 is present, and that there is one in the tread 7
  • the recess 3 extending into the step is missing, and instead there is a recess provided only in the region of the leg of the step 40.
  • FIG. 11 shows the riveted tabs 24 ', 34', 35'4
  • FIG. 12 shows a section through the spar 50 in a plane parallel to the step surface 6 of the step 40, the section being cut through the tabs 34, 24 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)
EP83106596A 1982-07-22 1983-07-06 Assemblage d'échelons et montant pour une échelle en métal léger Expired EP0099513B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106596T ATE26152T1 (de) 1982-07-22 1983-07-06 Holm-stufenverbindung bei einer leichtmetallleiter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3227363 1982-07-22
DE19823227363 DE3227363A1 (de) 1982-07-22 1982-07-22 Holm-stufenverbindung bei einer leichtmetall-leiter

Publications (3)

Publication Number Publication Date
EP0099513A2 true EP0099513A2 (fr) 1984-02-01
EP0099513A3 EP0099513A3 (en) 1985-04-17
EP0099513B1 EP0099513B1 (fr) 1987-03-25

Family

ID=6169025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106596A Expired EP0099513B1 (fr) 1982-07-22 1983-07-06 Assemblage d'échelons et montant pour une échelle en métal léger

Country Status (3)

Country Link
EP (1) EP0099513B1 (fr)
AT (1) ATE26152T1 (fr)
DE (2) DE3227363A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024119469A1 (de) * 2024-07-09 2026-01-15 HYMER GmbH & Co. KG Verbindungselement zum Aufbau eines T-förmigen Verbunds

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136640A1 (de) * 1971-07-22 1973-02-01 Fuchs Otto Stufenleiter
DE2226213B2 (en) * 1972-05-30 1975-04-03 Walter 7120 Bissingen Kuemmerlin Ladder rung to stringer fixture - has fillers detachably inserted in spaces between rung ends and cutout edges
DE2862162D1 (en) * 1978-01-02 1983-02-24 Cizely Fab Metall Metal ladder
US4204587A (en) * 1978-10-13 1980-05-27 White Metal Rolling And Stamping Corp. Ladder constructions

Also Published As

Publication number Publication date
EP0099513B1 (fr) 1987-03-25
DE3370508D1 (en) 1987-04-30
EP0099513A3 (en) 1985-04-17
DE3227363A1 (de) 1984-01-26
ATE26152T1 (de) 1987-04-15

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