FR2465913A1 - ASSEMBLY NODE COMPRISING FASTENING MEANS FOR CONNECTING BAR-SHAPED WORKPIECES - Google Patents

Abstract

ASSEMBLY KNOT CONTAINING MEANS 3 FOR FIXING PIECES 2 IN THE FORM OF A BAR FOR THE REALIZATION OF STAR-SHAPED MESH FRAMES. THE ASSEMBLY KNOT 1 HAS A POLYGONAL PROFILE THE SURFACE OF WHICH PROVIDES IDENTICAL CONNECTION SURFACES AND EACH CONNECTION FACE INCLUDES AN ELEMENT 3 FOR FIXING ON AN EXTREME FACE A BAR-SHAPED PART 2, THE AXES OF THESE FIXING ELEMENTS 3 CROSSING THE AXIS OF THE REACH BORE 6 OF THE ASSEMBLY KNOT 1. APPLICATION TO THE CONSTRUCTION OF REDUCED MODEL TOYS IN THE FORM OF CAROUSELS AND LARGE AMUSEMENT PARK WHEELS.

Description

The present invention relates to an assembly node comprising means

  fasteners for connection

  of bar-shaped parts for the realization of ossa-

  star-shaped lattice work.

  Knots of plate-like assembly are known, by means of which the formation of star-shaped lattice frameworks is carried out so that the bar-shaped parts are put in place on the assembly knot.

  and secured by means of screws, bolts, or the like.

  In order to obtain sufficient rigidity, this method of fixing

  As a rule, this requires two spaced securing points, or an attachment point and lateral guidance for the bar-shaped parts. In addition, there is a problem with these known assembly nodes that the center of gravity of the lattice framework is outside the assembly node. Assembly nodes of this type are therefore disadvantageous with respect to

  their use as hubs for lattice frameworks

  nantes in the form of stars, such as are necessary for example for the construction of toys or models

  in the shape of a ferris wheel (amusement park) or car-

Rousel.

  The object of the invention is therefore to

  an assembly node which has advantageous characteristics as a hub for rotating lattice frames and a simple connection possibility of

bar-shaped pieces.

  According to the essential characteristics of the invention

  tion, the assembly node has a polygonal profile with sur-

  connection faces of identical dimensions on its

  tower and a bearing bore and a fastening means for the connection by their end faces bar-shaped parts on each connecting face, the axes of these fastening means crossing the axis of the node bearing

assembly.

  Due to the polygonal profile of the assembly node,

  there are connecting surfaces of identical dimensions

  around the periphery, which gives the possibility of

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  connect the bar-shaped parts by their extreme faces to the assembly node and fix them through the fasteners. Thanks to the positioning by the end faces, thus directional orientation is achieved, so that a fastening element by connecting surface is sufficient for a dimensionally stable attachment bar-shaped parts. In addition, the center of gravity of a latticework frame built with identical bar-shaped pieces coincides with the center of gravity of the assembly node and lies on the axis of the bearing bore, so that the conditions of rotation of the lattice framework are optimal. The assembly knot according to the invention is therefore suitable as a hub for producing toys or models of the

type carousels or large wheels.

  According to another characteristic of the invention, the connecting surfaces may be square. This condition is satisfactory if the length of the assembly node is equal to the lengths of the sides of the polygonal profile. A square connecting surface makes it possible to join building bars with the same square cross section on board. According to yet another embodiment of the invention, the fastening means may be tubular and slit in the length direction. For their connection, the bar-shaped parts require in their extreme faces a suitable bore for housing and of which

  the diameter is, to make an assembly, slightly less than

  the outer diameter of the fastening means mounted on

  the assembly node. This type of assembly is even made

  sand by relatively young children.

  If greater fastening efforts are required

  the means of fixation may, in another form

  embodiment of the invention, being connecting pieces

  roughly cylindrical, with a groove around it. This last groove gives the possibility to block

  the bar-shaped part associated with the assembly node.

  This assumes that a transverse bore intersecting the bore for housing the connecting pieces is provided

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  in the bar-shaped part, bore through which a U-shaped wedge can be attached to the annular groove of the

connecting piece.

  The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which: FIG. 1 represents an assembly node to which bar-shaped parts are fixed; and FIG. 2 represents a variant of said node

  assembly, comprising locking fasteners.

  The connecting element 1 of FIG. 1 has a cross section in the shape of an equilateral triangle and a length equal to that of the sides of this triangle. This gives square connection surfaces and the same dimensions for the bar-shaped parts 2, which have a cross-section equal to the connecting surface. For connection by the faces

  extremes of the bar-shaped parts, the connecting surfaces

  are fitted with fastening means 3 which

  right angles. In order to make an assembly in the bores 4 serving as a housing and arranged in the end faces of the parts 2, the fastening means 3 are tubular * comprise a longitudinal notch 5 and have a further

  margin slightly over the bores 4.

  The elasticity of the fastening means 3 generates friction that absorbs tensile stresses and is sufficient for relatively simple, low-stress, toy models. To be able to use the truss frame as a rotating element comprising the assembly node 1 as a hub, this node has a bearing bore 6, of which

  the axis passes through the point of intersection of the fasteners.

  Thus, the center of gravity of the lattice framework is

on the axis of the span bore.

  The assembly node 7 of FIG. 2 has a regular polygon-shaped cross section, the length of the assembly node also being equal to the length of a polygon side. As a result, the connecting surfaces are also square for this embodiment, and the

  fastening means 8 are cylindrical connecting pieces

  in which is hollowed an annular groove at a distance from the connecting surface. After placement on the fixing means 8 of the bar-shaped part 2, there is a bore 4 serving as a housing formed in the end surface, a U-shaped key 10 whose branches engage in the annular groove 9 of the fastening means 8, is introduced by a transerval bore 4a of the part 2. Thus, the bar-shaped parts 2 can be

  attached to the assembly node so as to withstand traction.

  Thanks to the bearing bore 6, this assembly node is also suitable as a hub for a star-shaped latticework frame, for example for the construction of toys or models.

  shaped like a carousel or ferris wheel.

  It goes without saying that the present invention has not been described

  indicative but not limitative and that it is likely

  tible of various variants without departing from its scope.

Claims (4)

  1. An assembly knot comprising fastening means for connecting bar-shaped parts for the realization of star-shaped lattice frames, characterized in that it has a polygonal profile comprising surfaces. identical dimensions on its periphery and a bearing bore (6) and, on each connecting face, a fixing means (3; 8) for the connection by their end faces of the parts (2) in the form of bar, the axes of these fastening means crossing   the axis of the bearing bore (6) of the assembly node (1; 7).   2. Assembly node according to claim 1,   characterized in that the connecting surfaces are square.   3. Assembly node according to claim 1,   characterized in that the fastening means (3) are tubular-   and slits (5) in the lengthwise direction.   4. Knot assembly according to claim 1, characterized in that the fastening means (8) integral with the connecting surfaces are cylindrical pieces   in which is hollowed an annular groove (9).