Joint for rod with a connecting part

0001The invention relates to a connector of a Rod member with a connecting portion, with a to the Rod element, in particular adjacent to a pipe ring member the at least one slip pocket has, and with at least an actuated jaw to the connecting part is connected and which is engaged in the engagement pocket, is supported on the outer periphery of the rod member and with a Clamping part on the ring member can be fixed.

0002A connector having the aforementioned features is known from DE-C-40 21 602 is known. The rod member is a tube to the outer circumference of a ring is fixed by welding. The ring is above and below the welding location in each case round bent outwards, so that the top and bottom an annular engagement pocket is present. In both pockets engages a respective one jaw. The upper Jaw is integral with the connection part, to which a Pipe is welded. On the upper jaw is a lower Jaw hinged, which in the lower slit pocket engages. The to be connected to the rod member Rod with the upper jaw in the upper slit pocket mounted and the lower jaw will with introduced a wedge into the bottom pocket and there held by the wedge. The known connector is for the determined scaffolding and suitable. There is justified, that carried out on a larger scale preparatory work must be such as the welding of the ring member at the rod member and the connecting part of the to be connected Rod.

0003In contrast, the invention has the object, a connector having the features mentioned so to improve that expertly performed preparatory Work be avoided.

0004This object is achieved in that the ring element adjacent to the rod member and loosely attached to the jaw is clamp the rod member.

0005For the invention is of importance that a loose ring element is used while a firm connection between the rod member and to be attached thereto further component is achieved. Since the ring element applied loosely is, therefore, not the rod member by welding or otherwise attach, be appropriate preparatory Working avoided. The attachment may also Rod elements are made of materials which only are difficult to weld and / or welding regions be unsightly. Above all, however, is important, that the loose ring element during assembly of the rod member positioned with a component to be connected, if necessary, can be. It is also possible, after the assembly of a perform positional correction. The connector is consequently particularly versatile and allows to use, which it used structures to vary varied.

0006Conveniently the connector is formed so that the ring member is a rod member encompassing closed Ring. The closed ring can be of a End of the rod member to be postponed and is at any position instead of the rod member in order to subsequently to secure the connector. The closed Ring is a large area of ​​the rod member so that slipping ruled the ring at the rod member due to high friction can be. The surface pressure between the Rod member and the ring is small, so that deformations the components are avoided.

0007Conveniently, the ring element is integral. The Ring element is consequently very strong and for most use applications, which are of an end Rod element can be pushed onto this.

0008If the pushing of the ring member to the rod member from one end, is not possible, the connector can are formed so that the annular element consists of two Parts which are a composite closed form ring. The two parts can intermediate the ends of Rod member are assembled.

0009A practical embodiment of the above-described embodiment is when the two parts of the ring element rod element parallel composed interconnected are. By the rod element parallel assembly results in an entanglement in the circumferential direction of the ring, so that at its parts can not be separated unintentionally.

0010A further development of the connector can be effected by that the annular element as a portion of a closed ring is formed and at the rod element with a fastening element loosely fitted. The lots can be such be that to a limited extent a correction of position is of the connection part is possible, so that the position of a to be connected Rod can be corrected accordingly. The ring member or the portion of a closed ring surrounding the rod member only on a proportionate share the scope of this rod member, so the outside of the Terminal portion of the connection part free of any may be structural parts of the connector. That's a accordingly sizable juncture.

0011An embodiment of the above-described embodiment can be characterized in that the fastening element engages an abutment piece of the rod member, and that the abutment piece in the interior of the rod member extensive with the fastener and a wide Durchgriffsausnehmung thoroughgoing collar supported on the section. When pressing the fastener can the abutment piece and the ring member together be braced without pinching the rod member. The ring element remains accordance loosely on rod member. The desired limited adjustability of Ring element remains in accordance with the width of Durchgriffsausnehmung guaranteed.

0012It is preferable that the engagement pocket on the adjacent the outer periphery of the rod member. One in the jaw engaging engagement bag must necessarily be on The outer periphery of the rod member supported when operated is, so if set the connector on the rod member becomes.

0013The above object can also be achieved that the annular element as a portion of a closed Ring is formed and at the rod element with a Fastener is fixedly attached, at one abutment piece of the rod member engages, and that the clamping jaw can be clamped on the section. In this case, on a loose mounting of the ring member or of this Ring element forming portion of the rod member omitted. This is acceptable if it or on an adjustment subsequent change of the seat of the connecting part does not arrive. In addition, but also with this connector formed a considerable fastening point and it is not necessary to attach the ring member by welding.

0014For all the embodiments described above, it is desirable that the ring member has a trapezoidal cross-section has its edges per an additional pocket with the forming rod member. Such a ring member can volumenarm be formed, yet is sufficiently stable and capable of a stable attachment of the connecting part to serve.

0015In particular, in the embodiment described above it is expedient to form the connector so that two have jaws yet, both the ring member between be clamped and thereby clamp on the rod member. The jaws are each supported on the rod member , pull the ring member in the attack portion of the connecting part from off rod element, so that the ring element the rest can apply firmly to the rod member.

0016A structurally advantageous embodiment is characterized, that two virtually identical cross section jaws are screwed together. The same cross-section Jaws can be optimally adapted to the trapezoidal Customize section containing ring member. They can be also optimally adapted to a screw, for example, Turnbuckles.

0017It is preferable to form a connector in such a way that a single clamping screw is present, or that two Turnbuckles in an existing between two jaws, if necessary, connecting means having internal sleeve are screwed. A single clamping screw is in the sense a simple training of the pigtail advantageous while two turnbuckles the design range of the connecting part zoom, for example, by use of an internally threaded sleeve, serve the further fastening tasks can.

0018The connector can be designed in such a way that the connector directly to the jaw or a with the latter connecting part firmly connected is connected. This results in corresponding design freedom in the connection area.

0019is to be preferred if the connection part by means of two Clamping jaws is connected. In this case, those Jaws are used, which also of the terminal serve connector to the ring member.

0020For the above-described embodiment is to be preferred, that a connecting section of the terminal part trapezoidal is trained. Then the jaws can in cross-section are symmetrically formed what uniform Distribution of the burden of the jaws in their bracing leads to. A further development of the connector can to the effect take place in that the connection part is a one to End edge of a mating tube supporting tube closure plate is that projecting a in a tube axis has terminal cross section. The tube lens of the lamp is a coupling piece, with which the connecting part in the desired Manner can be positioned at the mating tube, before especially in the radial direction. It will also take over positioning those components that, the connector on the tube or attach to the pipe end.

0021For such a fixing of the pipe connection part on Tube, it is expedient to construct the connector so that, in a mating tube is arranged a Spreizkorb, the tapered in to the terminal member recess having an expander cone, in which a part of the terminal screwed passing through and supporting it expander is. With the expanding cone of Spreizkorb can in mating tube are spread and adhere to the inner wall Creating fixed. The strength of the spread determined in Connection with the embodiment of Spreizkorbs the extraction forces, which the connector with respect to said mating Tube can ensure.

0022It is particularly advantageous if the longitudinal slots Spreizkorb has that alternately from one basket end up in Near the other basket end rich. in this case, the Spreizkorb over its entire length evenly against the inner wall of the connecting pipe are spread. It gives a uniform distribution of surface pressure between the Spreizkorb and the inner wall of the connecting Tube.

0023The connector is not limited to that only a single connector and therefore only a single pipe at a could be connected rod member. The connector rather may be formed so that on the ring member several distributed over its circumference jaws with them attack connected connection parts. In this case, on any connected terminal part a rod or Pipe to be connected, so that the ring element, the function a node for a plurality of terminals accepts.

0024The invention is illustrated with reference to the drawing Embodiments explained. It shows:<dl tsize="6" compact="compact"><dt>Fig.1</dt><dd>a cross-section through a two tubes together connecting connector,</dd><dt>Fig.2</dt><dd>a plan view of the connector of Figure 1,</dd><dt>Fig.3</dt><dd>section AA of Figure 1, </dd><dt>Fig.4</dt><dd>section BB of Figure 1,</dd><dt>Fig.5</dt><dd>one of Fig.1 similar view of a connector Notwithstanding a in comparison to Fig.1 trained connector,</dd><dt>Fig.6</dt><dd>a plan of the connector of Figure 5 with a connected board member,</dd><dt>Figure 7</dt><dd>one of Fig.1 corresponding representation, with a Ring member, but without further configuration of the connector</dd><dt>Figure 8</dt><dd>a sectional view CC of Figure 7,</dd><dt>9a</dt><dd>a perspective view of a two part assembled ring member, and</dd><dt>FIGURE 9b</dt><dd>the disassembled parts of the ring member of 9a in perspective view.</dd></dl>

0025The connector illustrated in the figures are used for Establishing a mechanical connection between a Rod member 10 and a part to be connected thereto. 1 shows a rod element 10 a circular cylindrical tube and as to be connected part also a pipe 26, while Fig.6 as to be connected part a plate 31 shows. The Rod member could also be a rectangular or square his pipe.

0026An essential part of the connector is a ring member 12,12 'in different embodiments. The Fig.1 to 6 show a ring member 12,12 'a self-contained integral ring 12. The ring 12 surrounds the rod member 10 and is located at the outer circumference 10 'close to, without to clamp it. Consequently, the ring 12 over the ends the rod member 10 are postponed, provided that these are free. If the ends of the rod member 10 is not free are, are so occupied by design which is a prevent sliding of the ring 12, the ring 12 may in accordance the 9a, 9b be formed in two parts, ie of two parts 12 '', 12 '' 'exist, which together form a complete ring 12 form.

0027The in FIGURES 9a, 9b illustrated parts 12 '', 12 '' 'are the same size, so each comprise half the Outer periphery 10 'of the rod member. At their mutually facing and mutually overlapping ends of the portions 12 '', 12 '' 'are each provided with hook 32nd The hooks 32 are designed so that they do not project but completely to lie within the cross section of the complete ring come. By attaching the parts 12 '', 12 '' 'at the outer periphery 10 'of the rod member 10 and moving these parts in the axial direction of the rod member 10 in terms of entanglement the hook 32 is a closed ring member 12,12 'to form.

0028A one-piece or a unit of several parts Ring 12 has a trapezoidal cross-section. This Cross section is arranged so that its edges 21 to the are facing the outer periphery 10 'of the rod member 10th Consequently Pockets 13 are formed, so the horizontal Space or the undercut, the ring 12 with the the rod member 10 forms. These pockets 13 are annular, that run continuously around the Rod member 10 around. The pockets 13 serve the Engagement of the clamping jaws 14,15. The jaws 14,15 Engaging protrusions 14 ', 15', that the shape of the pockets are matched. 13 The engagement projections 14 ', 15' fill the pockets 13 practically, with the Jaws 14,15 at the outer periphery 10 'of the rod member 10 support, which they accordingly annular extensively are formed. Fig.2 leaves the part-cylindrical contour of Jaw 14 seen in the vicinity of the rod member 10th This also applies to the clamping jaws 14,15 of Fig.5,6, in the supervision are narrower than the clamping jaws 14,15 of Fig.1,2.

0029As in the embodiment of Fig.1,2 a pipe 26 connected to to be, the jaws 14,15 are in accordance with Figure 3 adapted to the outer periphery, so that therefore the formed by them Total amount corresponding to the periphery of the tube 26 approximately.

0030The jaws 14,15 of all embodiments are clamped together and thus comprise the ring element 12,12 '. The Stress caused due to the tapered engaging projections 14 ', 15', that the ring element 12,12 'beyond the Connector portion firmly against the outer periphery 10 'of the rod member 10 is pulled and consequently no longer The axial direction of this element can move.

0031A proper bracing of the two clamping jaws 14,15 can be achieved by clamping screws 16,17. Fig.1 shows an embodiment with a single clamping screw 16. This passes through a through bore of the clamping jaw 14 and is screwed into a threaded blind bore of the clamping jaw 15th Both jaws bridge virtually all Height of the ring 12 so that a corresponding guide of the Jaws 14,15 ensured against lateral tilting reached and a sufficient stability of the clamping jaws can be. The jaws 14,15 can also exactly equal cross sections be formed when the clamping screw 16 not according Fig.1,3 into a blind threaded bore of the clamping jaw 15 is screwed, but when the tightening screw 16 with one arranged in the clamping jaw 15 nut cooperates.

0032In Figure 5 are also cross-sectionally identical jaws illustrated 14,15, which interact with two clamping screws 16,17. there is an intermediate the jaws 14,15 Internally threaded sleeve 23, which the jaws 14,15 at a distance holding and in the internal thread of the clamping screws 16,17 are screwed. The predetermined by the threaded sleeve 23 Distance between the jaws 14,15 is chosen such that these when tightening the turnbuckles 16.17 to ring 12 pinch with their projections 14,15 therebetween.

0033The clamping screws 16,17 are so short that they have a distance between can be, in the region of which connection means 22 can be arranged in the shape of a cross hole. The Cross bore is also provided with internal thread, so that a terminal screw 33 can be screwed, the a plate 31 is fixed in accordance with Figure 6. The internally threaded sleeve 23 is in this case also the connecting part 11 for the Plate 31st

0034In the embodiment of the connection part is Fig.1,2 11 a tube lens of the lamp, which in the pipe interior of the tube 26 is engaged and centered in this way. With a Annular collar 34 is prevented, that the connection part 11 in the Inner tube can be pushed. The tube closure plate has a protruding in the tube axis 26 Wire gauge 24, with which it from the jaws 14,15 can be clamped. Need be, the jaws 14,15 with connection projections 14 '', 15 '' at the terminal cross-section 24 at. The connecting projections 14 '', 15 '' are in the plane of representation formed with the same cross section as the connecting protrusions 14 ', 15', the terminal section 24 in Similarly, a trapezoidal shape, such as trapezoidal Cross-section of the ring 12. The connection section 24 but may be perpendicular to the plane of circular and the jaws 14,15 are sized to rest thereon, So together form a molding of the terminal section 24 matched molding. In the case of a flat tube wall may be straight, the clamping jaw 14, so that the connecting projections 14 '', 15 '' perpendicular to the plane of the Fig.1 have the same cross section.

0035In the above embodiment, the connection part is 11 directly connected to the jaws 14,15. But it could also be a connection through an with the jaws firmly connected connecting member carried.

0036A connection of the connecting part 11 to the pipe 26 done with a Spreizkorb 27. The Spreizkorb 27 forms with an expansion cone 28 and an expansion screw 29 a unit. The Spreizkorb 27 has a down to connecting part 11 tapered recess 27^IVUsed in the expansion cone 28 is, which has an internally threaded bore into which a Expander 29 is screwed. The expander 29 penetrates the connecting part 11, namely, the tube closure plate the terminal section 24 and thus holds forth the connector 11, the Spreizkorb 27 and the expander cone 28 together. When tightening the expansion cone 28 of Spreizkorb is 27 expanded outward and continues to the inner wall of the Pipe 26 firmly. This assembly is carried out before the connection part 11 assembled with the jaws 14,15 of the connector becomes.

0037Thus the Spreizkorb 27 possible with his entire The outer periphery to the inner wall of the tube 26 is applied, it is in accordance with Figure 4 over the periphery uniformly distributed longitudinal slots 30 provided. The longitudinal slots 30 are alternately formed differently. According to Figure 4, two are each other adjacent plates 27 '' 'of Spreizkorbs 27 by a Longitudinal slot separated, the left in Figure 4 from Basket end 27 'to the vicinity of the right basket end 27 " passes through where the two plates 27 '' 'connected to each other are respectively integrally. Such a longitudinal slot 30 changes with such from which the right in Figure 4 basket end 27 " 27 'through to the vicinity of the left end basket where the concerned slats interconnected or integrally are formed. With such Spreizkorb 27 is for the desired uniform contact pressure of the outer periphery of the Spreizkorbs 27 provided to the inner wall of the tube 26th

0038In the Fig.7,8 is a representation of the clamping jaws omitted and the connecting part and of the connecting part been. The parts can also be formed was to be explained as to Fig.1,2. From the comparison of Figure 2 and Figure 8 it is seen that such clamping jaws 14 in have regard to the outer circumference 10 'has the same circumferential length are, as the section 12 '. The section 12 'is consequently completely covered by the jaws 14, so that an external view of the connector results that virtually exclusively determined by the design of the jaws 14,15 is.

0039The section 12 'of the rod member 10 with the its fastener 18 firmly attached. The fastener 18 is a screw which at an abutment piece 19 of the rod member 10 engages, by a Threaded hole screwed by this abutment piece 19 and both parts pressed firmly against the rod member 10, namely the section 12 'against the outer periphery 10' and the abutment piece to the inner circumference 10 ''. In this Case, a precise alignment of the section 12 carried out ' before the connector is mounted in the other.

0040The abutment piece 19 has in the interior of the hollow Rod member 10 are introduced. For this purpose, in this Rod member 10 a Durchgriffsausnehmung 20 provided which is so far that a canted insertion of the abutment piece 19 possible in the interior of the rod member 10 is. In addition, the fastener 18 must be sufficiently long be to appropriate canting positions of the components involved to reach. After that is an immovable securing of the section 12 'on the rod element 10 possible.

0041If the portion 12 'on the rod member 10 immovably is attached and after the attachment of the connector a Correcting the position of the connecting part 11 is desired, the connector must first completely decomposed and thereafter a correction of the seat of the section 12 'in the context of Width of Durchgriffsausnehmung try 20th The accuracy of the corrective proves circumstances only after the connector has been mounted again. Should the correction be incorrect, the connector must again are degraded.

0042It is therefore advantageous, the portion 12 is not at the Rod member to secure 10th For this purpose, in the Fig.7,8 shown that the abutment piece 19 with an annular collar 35 is formed, which are supported on the portion 12 ' can, in such a way that the rod element 10 is not clamped becomes. In this case, the housing of the connector and thus the position of a part to be connected, such as a pipe 28, only determined when the tension member 16,17 attracted is and thus the section 12 'also acted as the Ring element 12,12 'or the ring 12. In this case, therefore, the section 12 'of the rod member 10 is pulled away and the Abutment piece 19 is supported on the inner wall of the rod member 10, so that a displacement of the connector on the Rod member 10 is no longer possible. First, however, could the jaws 14,15 or the connecting part 11 with the Pipe 26 into the desired position. A correction the seat of the connector is then no longer necessary. A correction of the seat of the connector is possible at any time also subsequently possible, if requested. Then the jaws 14,15, however, need to not degraded be, but it is enough their loosening and displacement of Pipe 26 within the framework of the width of Durchgriffsausnehmung 20 preset options.