Joints and connections – Member ends joined by inserted section – Angle section
Patent
1984-05-31
1986-09-09
Husar, Cornelius J.
Joints and connections
Member ends joined by inserted section
Angle section
403316, 403354, 403381, F16B 1236, F16B 1304
Patent
active
046105638
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a dowel for assembling adjacent ends preferably of furniture parts and constructed in such a manner that it is capable of being fastened in a bore of the individual furniture part, an exposed head by the assembling being constructed to engage an adjacent head of a similar dowel of another furniture part.
BACKGROUND ART
Dowels are known for assembling furniture parts, in which a dowel having a protruding part is mounted in one furniture part, whereas in the other furniture part a dowel is mounted having a receiving part, into which the protruding part is adapted to be received by snapping the receiving part. Consequently, two different dowels are always required for assembling furniture parts, said dowels being adapted to cooperate with each other. It is thus essential that the user is careful always to use one of each type, which may sometimes imply inconvenient delays in the work with such dowels and in the handling of the furniture parts in question.
DISCLOSURE OF INVENTION
The dowel according to the invention is characterised in that on the head the dowel comprises a protruding part as well as a receiving part, said parts being shaped so that the protruding part of the dowel may be snapped into the receiving part of a similar dowel and be maintained substantially immovable herein.
It is hereby obtained that the user has to handle only a single dowel. It is true that this dowel must be mounted correctly relative to the corresponding dowel, but this is fairly easy to accomplish.
According to the invention the head may be tapered so that it comprises substantially two plane surfaces forming an angle, preferably of 90.degree., with each other and intersecting immediately adjacent to the middle of the head, and the protruding part and the receiving part may be associated with respective plane surfaces and may each be of such a shape that the corresponding plane surface abuts the plane surface of the corresponding part of the other similar dowel. It is hereby in a very simple manner made possible to assemble the angular parts in question with the desired mutual angles, of e.g. 90.degree..
The dowel according to the invention may also be of a substantially circular cross-section and may be hollow; the receiving part may be constituted by a centrally located, radial, rectangular aperture which is formed in the corresponding plane surface extending from the intersection of the two plane surfaces, and which inwardly in the dowel leads into the inner cavity, and the protruding part may be of a corresponding, substantially rectangular shape with a corresponding, central location on its adjacent plane surface, and the protruding part at the outer end may comprise an enlargement adapted to be received in the inner cavity of a corresponding dowel. A dowel is hereby obtained which is very simple to use and easy to manufacture.
Furthermore according to the invention the dowel may comprise axial slits issuing from the receiving part, whereby said receiving part in a simple way is made resilient or yielding to effect snap action, even if the material used for the manufacture of the dowel is comparatively hard.
Moreover according to the invention the dowel may comprise a centrally located slit through the protruding part, said slit extending symmetrically around an axial plane through the central axis of the dowel, whereby the snap action may be effected in a simple manner at the resilient, protruding part.
According to the invention the dowel may comprise a locking device, which by actuation from the outside is adapted to pass from the inner of the dowel into the central slit through the protruding part and to abut opposite sides of the slit. A simple way of locking the furniture parts is hereby obtained with no possibility of the cooperating dowels being detached.
In an especially advantageous embodiment the protruding part, viewed in the direction of the intersection of the two plane surfaces may be triangular, and the two adjacent free surfaces of the protruding part may
REFERENCES:
patent: 1285869 (1918-11-01), Wineman
patent: 3985083 (1976-10-01), Pofferi
patent: 4082470 (1978-04-01), Alberts
patent: 4099887 (1978-07-01), Mackenroth
patent: 4300271 (1981-11-01), Wohlhaupter
patent: 4357744 (1982-11-01), McKenzie et al.
Cuomo Peter M.
Husar Cornelius J.
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