Joints and connections – Rod to member to side – e.g. – plate – rod side – etc. – Intermediate member includes tubular part
Patent
1990-01-05
1991-10-15
Kundrat, Andrew V.
Joints and connections
Rod to member to side, e.g., plate, rod side, etc.
Intermediate member includes tubular part
403349, 403195, F16B 900
Patent
active
050569538
DESCRIPTION:
BRIEF SUMMARY
The invention relates to assembling dismountable or modular elements, in particular furniture elements in order to assemble furniture in kit form.
More precisely, the invention relates to an assembly device for assembling dismountable or modular elements, said elements being of the type comprising a framework and at least one spacer held by said framework and disposed substantially transversely relative thereto.
Numerous systems already exist for assembling a framework and spacers or panels in order to provide various dismountable or modular pieces of furniture.
Firstly there are systems using a sleeve and a screw at the end of two risers disposed on either side of a panel: one of the risers has a shoulder for supporting vertical forces and the panel is sandwiched between the two risers, with assembly being assembled merely by rotating one of said risers several times relative to the other, thereby screwing them together.
More generally, there are systems based on the principle of connection members glued or welded to the ends of risers or partitions. These systems go from very simple techniques using screws whose heads are received in the panel being screwed (round-headed wood screws) to more complex systems using an excentric type of locking catch (the catch is rotatable about an axis parallel to the axis of the partition and is rotatable by means of a tool so that its edge is received in a groove provided for this purpose in a connection member applied to the end of the riser).
Mention may also be made of systems having threaded endpieces applied to the ends of risers constituting portions of the vertical framework, such as the system described in French utility certificate number 2 557 783.
However, these various techniques suffer from several drawbacks.
In general, they are limited to round section frameworks since the relative positioning of successive risers (about their axes) is difficult to control (relative rotation when screwing items together is always subject to an angular positioning error once the items have been assembled and this is unfavorable with respect to the appearance of the finished piece of furniture).
In addition, assembly usually requires a special tool to be used, except for tubes having endpieces and screws applied thereto which are screwed together through a slab of wood (however this technique is expensive and not very reliable).
Mention may also be made of U.S. Pat. No. 3,338,605 which describes a support structure suitable for making storage items, tables, or separating partitions.
The structure described in this American patent is essentially constituted by a connection formed by three mutually lockable elements, which connection can be clamped to the rim of a wall inserted in a lateral notch in the connection. Clamping is obtained by co-operation between a ramp and a ridge provided on two of the three elements: it is then necessary to provide fluting and slots in order to provide two locks against rotation, in order to lock all three elements together.
Such a structure does not require a special tool, but it is complex and remains limited to end-to-end assembly with snap-fastening connections.
The state of the art is illustrated in general by British patent number 1 402 925, U.S. Pat. Nos. 3,869,218, 3,661,411, and 3,890,022, and by German utility model 84/30 322.
The various systems that have been developed for assembling panels and partitions together are not well adapted to assembling together the bars of a framework. In any event, these systems do not set out to ensure that the bars remain perfectly in alignment, which is nevertheless essential if the pieces of furniture are to support heavy loads.
Doubtless this explains why manufactures are not keen to split up a vertical load-carrying riser into a plurality of subassemblies, since they are well aware of the risks of damage that can arise from applying heavy loads to such pieces of furniture, particularly since such loads are generally not uniformly distributed. A particular consequence of this is that prepacked ki
REFERENCES:
patent: 3338605 (1967-08-01), Stoeber
patent: 3661411 (1972-05-01), Flick
patent: 3851601 (1974-12-01), Davis
patent: 3858990 (1975-01-01), Busselmeier
patent: 3869218 (1975-03-01), Stoeber
patent: 3890022 (1975-06-01), Moon
patent: 4101232 (1978-07-01), Haapala
patent: 4756638 (1988-07-01), Neyret
Boue Jean-Claude
Marot Jacques
Kundrat Andrew V.
Societe de Design et d'Agencement
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