FR2661441A1 - WOOD STAIRCASE WITH DOUBLE LIMON CENTRAL. - Google Patents

Abstract

Assembly process of wooden parts used as a straight staircase with a central double stringer. The invention relates to a wooden staircase with a central double stringer, the assembly method of which by threaded rod and nuts enables industrial manufacture and rapid and simple assembly. It consists of 2 central straight wooden stringers (1) for use as a rack, assembled by a threaded rod (2) serving to separate 2 nuts (3), each with a washer (4) inserted between the nut and the stringer, the step supports (6) being embedded in the stringers by a notch (7) and being made integral by assembly or gluing with the steps (5). It is by tensioning by means of the nuts that the assembly is made integral.

Description

The present invention relates to an assembly method of

  Wooden pieces for use of straight staircase with central stringer.

  The straight staircase with traditional central stringer uses either

  strong sections of wood, either glulam, solutions to

  some, including the Doids or the cost price and the

  In addition, the design requires adaptability

  important in each case, and the assembly is comvlexed

  And also the only stairs existing in Dréfabriqué are-

  they have French, English, or French stairs, whose

  choice remains limited and the Dose difficult for the amateur: as many

  re that there is almost no straight staircase simulates, sober and modest

derne in orfabricated.

  The staircase ready to mount, which constitutes the invention,

  Drincirale feature the assembly rod of the two silts that Dermet to secure the assembly and makes possible easy assembly

  and very fast, an aesthetic, sober, modern and eco

  nomic. The assembly method consists in joining together in a first time 2 central strings serving as rack with a threaded rod Dar step on which are screwed 2 nuts, each nut being accompanied by a washer On the racks thus set

  In place, we set up the blocks made up of the collage or the assembly.

  walking and sleeping D, slotted blocks for this purpose.

  The nuts are then pushed out in force and the tension thus ob-

holding that solidarises everything.

  Steps and supports of steps, which constitute

  can be made of a single block of wood, or Dar assembly and / or bonding of 2 elements, which reorésente a

solution more economical.

  The shape of the coins wants to vary, var exemmle To answer

aesthetic goals.

  The shape of the cuts can also vary.

  The accompanying drawings illustrate the invention:

  FIG. 1 is an exploded view of the assembly according to the invention.

vention.

  FIG. 2 represents, seen from the front, an assembly module

made according to the process.

  Figure 3 shows, seen from the front, a piece of the staircase

thus obtained.

  With reference to these drawings, the assembly comorend 2 silts

  central wooden racks (1), joined together by their

  this internally by means of a threaded rod (2) on which

  2 nuts (3) and 2 washers (4) are inserted between the silt and the nut, as many times as there are steps The step (5), and its nick (6) wooden, assembled or glued to the wood glue or assembled and glued, are inserted in a notch (7 V metric on the outer face of each slime in the center of which

  is drilled a round hole (8) for the threaded rod.

  Figure 2 shows, the assembly of a module once realized

  the 2 nuts (3) and their washers (4) screwed onto the stem

  tee (2) engaged in the round hole (8) mrevu on each silt, court maintain in force the separation of 2 central strings (1) and the positioning of the step (5) and supnort (6), including a

  1 notch (7) ensures the embedding.

  FIG. 3 shows the sequence of the assembly modules previously described along the central strings for rack use (1), a threaded rod (2) accompanied by two nuts (3) and two washers (4) holding the gap from the silts and the

  placing steps (5) and walking lights (6).

  This assembly process makes Dossible an indus-

  trielle Dar the simmlification elements, Dermet to nroduire a

  staircase to be assembled, assembled with a simple tool and limited

  you die an aesthetic and sober result.

  It can serve a simple staircase but also double

flight of steps.

Claims (8)

  1) Staircase in industrial wood, troductible in nrrt i mount double straight stringer, characterized in that the 2 strings (1) are partly central and assembled Dar a threaded rod (2) to separate 2 nuts (3), each provided with a washer (4) inserted between the nut and the silt, said silts serving as cre-t   walk the steps (5) and their Dnort (6).   2) Staircase according to claim 1 characterized in that   notch (7) is made on the outer lateral face of each   than silt (1) so as to receive the walking suvrort (6).   5) Staircase according to claims 1 and 2, characterized in that   each limnn (1) is tercé in the center of each notch (7) of walking suvport (6) a round hole (8) for the threaded rod (2).   4) Staircase according to any one of the preceding claims   characterized in that a threaded rod (2) dies in   each silt (1) by means of a round hole (8).   Staircase according to any one of the claims   dentes characterized in that 2 nuts (3) are Dlaces on the Dar-   central section of the threaded rod (2).   6) Staircase according to any one of the claims or   characterized in that a washer (4) separates each nut   (5) of each round hole (8) Derced in each silt (1) round each that works (5).   7) Staircase according to any one of the claims mrecified   2 dente characterized in that the walking sumoorts (6) are   (5) whether it is a single niece or a tarce that they are assembled or stuck together, or assembled and glued.   8) Staircase according to any one of the above claims   characterized in that the step (5) can be cut   How to fit into the mud (1).   9) Staircase according to any of the claims Drécé   dentes characterized in that it could serve a staircase simtle or double flight of steps.