Joints and connections – Branched – Three or more radiating members
Patent
1991-09-10
1993-10-12
Reese, Randolph A.
Joints and connections
Branched
Three or more radiating members
403176, F16B 700
Patent
active
052519945
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a guide device for a connection element.
BACKGROUND OF THE INVENTION
A device of this general type is known from the European Patent Application No. EP-A2-0 297 033.
SUMMARY OF THE INVENTION
It is the object of the invention to create a different type of guide device than the device disclosed in the above-mentioned European Patent Application.
The present invention provides a guide device for a connection element including a bolt which by means of a sleeve insert, can be rotatably fastened to an end of a rod. The bolt is connected slidably axially to the front part of a guide sleeve so that rotary movement of the guide sleeve can be transmitted to the bolt. A bell-shaped flange is at a rear part of the guide sleeve which serves to define an inside space which is dimensioned as that a head of the sleeve insert can be disposed therein.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be explained in greater detail by a description of exemplified embodiments with reference to the drawings; wherein:
FIGS. 1 to 3 show diagrammatic sectional views of various connection elements with various variants of the device according to the invention, and
FIGS. 4 and 5 show views of a guide insert for the guide sleeve according to FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The connection element according to FIG. 1 comprises a sleeve insert 3 consisting of a flange-shaped sleeve head 1 and a tubular part 2, wherein the tubular part 2 is provided with an external thread 4 for fastening it to one end of a rod of a three-dimensional framework. A bolt 5 is guided through a through-bore of the sleeve insert 3, the head 6 of the bolt 5 resting on the end wall of the tubular part 2.
The bolt 5 has an elongated, round, smooth part 7 and an end part 8 which is provided with an external thread 9 for fastening the bolt to a guide insert 10 (FIG. 4).
FIG. 4 shows a side sectional view transversely to the longitudinal axis of the guide insert 10 with a threaded part 11 which serves to screw it onto a junction part.
The guide insert 10 has on one side thereof a hexagonal part 12 (FIG. 5) with a threaded bore 13, into which the threaded bolt can be screwed. Approximately in the middle of the shell of the guide part 12, a perpendicular threaded hole 14 is provided, through which a threaded pin 15 shown in FIG. 1, e.g. a hegaxonal socket pin, can be screwed on to guide the guide insert 10 in the assembled state.
The bolt 5 is guided through the through-bore of a guide device or guide sleeve 16, from which the threaded part 11 of the guide insert 10 projects. At the front part of the guide sleeve 16 this through-bore is shaped complementally to the guide part 12, so that a rotary movement of the guide sleeve 16 can be transmitted to the threaded part 11 with as little play as possible.
The through-bore of the front part of the guide sleeve 16 can, therefore, also be polygonal, the same as the guided part of the guide insert. However, these cross-sections are preferably hexagonal, as illustrated in FIGS. 4 and 5. In contrast thereto the guide sleeve 16 is, in its rear part, made flange-shaped towards the outside and rear, to form an approximately bell-shaped flange 17, in the inside space 18 of which the sleeve head 1 can be accommodated. As shown in FIG. 1, the flange 17 includes a bevel 17', and a height h is more than half (50%) of the total height H. In addition, the guide sleeve 16 has in its rear part a radially arranged ring-shaped wall 19, wherein in the inside space of the guide sleeve 16 between the wall 19 and the guide insert 10 a coil spring 20 is arranged around the bolt 5, which spring 20 presses the guide insert 10 and the bolt 5 connected thereto forwards. Further, guide sleeve 16 includes an inside space 18'.
The maximum outside diameter of the flange 17 is preferably the same as the outside diameter of the rod 21 to be connected by the connection element, so as to obtain a pleasing aesthetic effect, and the minimum inside diameter of th
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Kim Harry C.
Reese Randolph A.
Syma Intercontinental S.A.
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