Joints and connections – Rod end to transverse side of member – Utilizing opposite sides of member
Patent
1998-07-08
2000-08-22
Melius, Terry Lee
Joints and connections
Rod end to transverse side of member
Utilizing opposite sides of member
403257, 4034091, F16B 902
Patent
active
061061832
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a clamping device for the releasable connection of two profile pieces in accordance with the preamble of Patent claim 1.
A clamping device of this type is known from DE-A-42 25 926. In the case of this clamping device, two clamping elements are displaced axially in order, by virtue of a system of sliding surfaces, to cause the retaining pieces to pivot during an axial movement of the bolt. The free end regions of the retaining pieces are each designed as hooks, in order to exert the desired clamping pressure during pivoting. Said clamping device, however, has the disadvantage that the two clamping hooks are subjected to loading, and exposed to forces, to different extents, with the result that, on the one hand, assembly is made difficult due to the occurrence of tilting and, on the other hand, the clamping elements exhibit play which results in increased wear. This results in it being necessary to have a generously dimensioned design and, thus, in the clamping device being of a greater thickness.
A further clamping device of this type is known from EP-B1 506 607. In the case of this clamping device, the bolt has carrying means for the pivotable mounting of a plurality of retaining pieces, each retaining piece and the inner walls of the insert core comprising a system of sliding surfaces in order to cause the retaining pieces to pivot during an axial movement of the bolt.
Furthermore, French Patent Specification 2,152,941 describes a first device with retaining elements which are mounted such that they can rotate around a pin arranged in a stationary manner in the housing. This device does not have any bolt or any screw which engages in the bolt via sliding surfaces; rather the retaining elements are pivoted by an eccentric whose height corresponds to the width of the housing. The housing does not have any sliding surfaces which cause the retaining elements to pivot as they move axially; rather the sliding surfaces are located in the eccentric and in the lower region of the retaining elements or of a pressure-exerting piece which displaces the retaining elements. In the case of a second device described in the abovementioned French patent specification, a bolt is mounted transversely in the housing and forms the sliding surfaces for pivoting the retaining elements.
Finally, flat latches with bent-over ends functioning as hooks are known from EP-0 238 848 B1.
Taking this prior art as the departure point, the object of the invention is to improve the clamping device mentioned in the introduction such that it is subjected to essentially symmetrical loading, may be of flatter configuration and also has good clamping properties.
The object of the present invention, then, is to provide an improved clamping device of the type mentioned in the introduction.
This object is achieved according to the invention by a clamping device with the features specified in the characterizing part of Patent claim 1.
Further advantageous configurations of the invention are specified in the dependent claims.
The invention is explained in more detail hereinbelow, by way of example, with reference to a drawing, in which:
FIG. 1 shows a sectional illustration, through an eccentric axis, of a novel clamping device with insert core in the closed state,
FIG. 2 shows a plan view of part of this clamping device and of its slide in the closed state,
FIG. 3 shows a sectional illustration, through an eccentric axis, of a novel clamping device with insert core in the open state,
FIG. 4 shows a plan view of part of this clamping device and of its slide in the open state,
FIG. 5 shows a sectional illustration along line V--V in FIG. 3,
FIG. 6 shows a sectional illustration along line VI--VI in FIG. 4,
FIGS. 7 and 8 show illustrations of such a slide,
FIG. 9 shows a side view of a novel latch,
FIG. 10 shows a plan view of a novel latch,
FIGS 11 to 13 show illustrations of a special crosspiece according to the invention,
FIGS. 14 to 16 show illustrations of a special eccentric according to the invention,
FIG. 17 sho
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patent: 5464298 (1995-11-01), Schomakers
Strassle Marcel
Zullig Kurt
Melius Terry Lee
Syma Inter Continental Ag
Thompson Kenneth
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