DE2204461A1 - PIPE HOLDER FOR PIPE CONNECTOR - Google Patents

Description

Pipe holder for pipe connector (addendum to patent application P 17 79 Il4.9)

The invention relates to a connecting element for assembling and dismantling frames and racks made of profile tubes, in particular square tubes for shelves, furniture, etc., consisting of a cube or center piece and to be connected to Rohrhaite i, the cube clamping cam and the tube holder having clamping lugs, so that cube and cam .. can be clamped together and released again by mutual rotation in any direction, according to patent ... (patent application P 17 79 Il4.9). The pipe holder can, as shown in the main patent, by the same tension that connects it to the cube, in the roiir

309832/0170

11 υ 4 4

595 ^ / '21 / Ch /' sr - 2 - January 31, 1972

be clamped or he can according to the additional patent ... (patent application P 21 43 526.7) be braced in the pipe by tightening a screw serving as a tension anchor.

According to the main and additional patent .... (P 17 79 11 ^ .9 and P 21 kl 526.7) the pipe is opened by compressing an elastic intermediate piece or by spreading an expansion jacket by means of a wedge-like expansion piece in an area or area perpendicular to the pipe axis. Level braced in the pipe. The tube holder has in the relaxed state because of the inner dimension tolerances of the tube to be considered in this a certain game that is retained outside the area or the plane where the Ver expansion takes place in the tube, even after the clamping NEN. As a result, the clamped pipe holder, although its connection to the cube is firm and free of play, can tilt to a certain extent in the pipe under bending loads, which has a disadvantageous effect due to a certain flexibility of the connection; With frequent alternating bending stresses, it happens that the clamped pipe holder wanders out of the pipe a little.

The solution proposed here avoids this disadvantage in that the tube holder is braced by two acting perpendicular to the tube axis in achsia- ler direction from each other by a certain amount away spreading or elastic intermediate pieces in the pipe ·

309832/0170 origina

origina

22044S1

595V2l / Ch / sr - 3 - January 31, 1972

The drawing represents an embodiment . It shows

Fig. 1 the pipe holder,

Fig »2 the expansion piece in plan and

Cut and
3 shows the expansion jacket with clamp anchor.

The pipe holder intended for use with square pipes and mainly made of plastic - Fig. 1 - consists of the expansion jacket 1 (Fig. 3) »in which the clamping anchor 2, which is used for fastening in the cube or center piece, is embedded, the expansion piece 3 ( 2) and the clamping screw k with the nut 5. The expansion jacket 1 has four expansion arms 6 which have inclined surfaces 7 at their ends; In addition, the expansion jacket 1 has four more inclined surfaces 8. The expansion piece 3 also has four spreading arms 9 with inclined surfaces 10, it also has a further four inclined surfaces on its head part. 11.

The parts are - assembled according to FIG. 1 - inserted into the pipe and clamped there by tightening the screw 4. Here, by the action of the surfaces 11 on the surfaces 7, the spreading arms 6 of the expansion jacket 1 are clamped in the area of the plane AA in the pipe, while at the same time the surfaces 8 act on the surfaces IO, whereby the spreading arms 9 d © ^s expansion piece 3 in the area of the plane BB are braced in the pipe. The expanding arms 6 of the expanding jacket 1 are placed in the inner corners of the pipe.

3 0 9 8 3 2/0170 _{ommi | MspE0TBD}

22GUR1

595V2l / Ch / sr - 4 - January 31, 1972

presses while the spreading arms 9 of the spreader 3 are firmly attached to the inner walls of the tube. The axial distance between the planes A-A and B-B causes the clamping of the pipe holder Particularly resistant to bending and tilting loads in the pipe, even with frequent alternating loads is.

In addition to the embodiment described, pipe holders can also be used according to the features of the invention for other materials and for other pipe profiles. In particular, in the vertical planes or areas lying to the pipe axis also include elastic spacers, e.g. Rubber buffer, as described in P 17 79 Il4.9 are arranged at an axial distance from one another. Within the scope of the invention there are of course, a number of other constructive modification options.

Such pipe holders have in addition to the aforementioned great stability of their attachment in the pipe and their ease of use still has the advantage of little effort and rational production options.

EXPECTATIONS

309832/01 70

Claims (6)

220US1 - 5 - Augsburg, January 31, 1972 EXPECTATIONS Ir) connector for assembly and disassembly of frames and racks made of profile tubes, especially square tubes for shelves, Furniture, etc., consisting of a cube or center piece and connected to it Pipe holders, the cube having clamping cams and the pipe holder having clamping noses that pass through Rotation of the pipe attached to the pipe holder clamped together in any direction be and wherein an elastic intermediate piece or expansion element by a tension anchor is pressed against the inner wall of the pipe according to patent ... (patent application P 17 79 114.9), characterized in that the pipe holder is located in two planes or areas (A-A and B-B) which are perpendicular to the pipe axis, which have an axial distance from each other by .Spreizelemente or elastic spacers are braced in the pipe. 2. Connecting element according to claim 1, characterized in that the pipe holder an expansion jacket (l) and expansion pieces (3), both of which in turn have expanding arms (6, 9) have, on their inclined surfaces (7, 10) each inclined surfaces (11, 8) of the other part (l or 3) act. 30983 2/0170 ORIGINAL JMSPECTED 595V2l / Ch / sr - 6 - January 31, 1972 3 · connecting element according to claim 2, characterized in that the expanding piece (3) is made in one piece from plastic together with its spreader arms (9). 4. Connecting element according to claim 2, characterized in that the spreader arms (6) of the expansion jacket (l) in the inner corners of the tube and the expansion arms (9) of the Spreading piece (3) pressed against the inner pipe walls. 5 »Connecting element according to claim 2, characterized in that the spreading arms (6) of the expansion jacket (i) against the inner pipe walls and the expansion arms (9) of the Spreading piece (3) are pressed into the inner corners of the tube. 6. Connecting element according to claim 1, characterized in that the jamming in the pipe by two axially spaced apart elastic intermediate pieces of the pipe holder _f, for example made of rubber, is effected. 309832 / 017Ö