EP3359825A1 - Connecting device for rigidly connecting a first pipe to a second pipe - Google Patents
Connecting device for rigidly connecting a first pipe to a second pipeInfo
- Publication number
- EP3359825A1 EP3359825A1 EP16775750.9A EP16775750A EP3359825A1 EP 3359825 A1 EP3359825 A1 EP 3359825A1 EP 16775750 A EP16775750 A EP 16775750A EP 3359825 A1 EP3359825 A1 EP 3359825A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- bore
- pipe
- connecting device
- shaped connecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
- F16B7/0446—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof
- F16B7/0453—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof the tubes being drawn towards each other
- F16B7/0466—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof the tubes being drawn towards each other by a screw-threaded stud with a conical tip acting on an inclined surface
Definitions
- Connecting device for rigidly connecting a first tube to a second tube
- the present invention relates to a connecting device for rigidly connecting a first tube to a second tube, and to a connecting system having such a connecting device and to a first tube and a second tube, which are connected to one another by the connecting device.
- Connecting devices for rigidly connecting pipes have long been known in many embodiments.
- the connecting devices are designed to attack from the outside, in the form of so-called clamps or clamps, to the two tubes and connect the two tubes together.
- Such from the outside to the two tubes attacking connecting devices are disadvantageous in terms of pollution and cleaning options.
- By protruding to the outside of the two pipes connecting devices protrusions and edges, where dirt accumulates.
- the cleaning of such connecting devices is relatively difficult due to the outward standing form of such connecting devices.
- the present invention has therefore set itself the task of providing a connection device for rigidly connecting a first tube to a second tube, which in use does not pollute as much as the known connection devices, and is easier to clean.
- the above object is achieved by a connecting device according to the invention for rigidly connecting a first tube to a second tube according to claim 1.
- the present invention is further directed to a connection system according to claims 9 and 11.
- Advantageous embodiments are specified in the respective subclaims.
- the connecting device according to the invention is insofar less susceptible to dirt and easier to clean compared to the known connection devices, as the connecting device according to the invention is arranged in the interior of the two tubes and has no outwardly projecting parts. All externally usable or operable elements of the connecting device according to the invention may advantageously be formed in alignment with the two tubes, so that no edges or other protrusions are present.
- the connecting device according to the invention is therefore of great advantage in particular for applications in in-line systems, in the food industry, in the pharmaceutical industry and the like, since there are no outer projections or contours on which dirt and bacteria can accumulate.
- the clamping element is provided with a thread and screwed into the second opening of the clamping bearing.
- the radial bearing has an elongated shape and has a length corresponding to the diameter of the first tube.
- the first opening of the clamping bearing is a transverse to the longitudinal axis of the clamping bearing through hole, and the second opening of the clamping bearing is an extending in the direction of the longitudinal axis of the inner bore.
- the inserted in the first tube state of the clamping bearing outwardly exposed end of the clamping bearing is adapted to the outer shape of the first tube so that the exposed end is flush with the outer surface of the first tube.
- the armature-shaped connecting element is biased by a spring in the direction away from the radial bearing.
- the head part of the armature-shaped connecting element has an elongated shape and has a width which is smaller than the width of the bore of the second tube and a length which is greater than the width of the bore of the second tube.
- the head part can be easily inserted into the bore of the second tube, and then can be rotated for rigid connection of the two tubes by 90 degrees, so that a tension of the head part is made possible in the bore of the second tube.
- the connecting device according to the invention further comprises an adapter element for mounting on one end of the first tube, with an outer side which is in alignment with the outer shape of the first tube, with an end face which is adapted to the outer shape of the second tube and with an inner bore for Performing the shank portion of the anchor-shaped connecting element.
- an adapter element for mounting on one end of the first tube, with an outer side which is in alignment with the outer shape of the first tube, with an end face which is adapted to the outer shape of the second tube and with an inner bore for Performing the shank portion of the anchor-shaped connecting element.
- the present invention further relates to a connection system with a connection device according to the present invention, and having a first and a second tube, which are interconnected by the connection devices, wherein the first tube has an end face, which is adapted to the outer shape of the second tube is.
- the just discussed adapter element is not necessary and therefore not provided, but the two tubes can be connected directly to each other by the connecting device according to the invention.
- the bore of the second tube has an elongate shape, with a lateral bulge for insertion of the head part of the armature-shaped connecting element.
- the two tubes can not be mutually rotated during the connection process with the connecting device according to the invention. Therefore, it is necessary to make the bore of the second tube so that the head part can be inserted, and then set and tensioned by a displacement of the head part in the longitudinal direction of the second tube, without twisting the head part.
- connection system comprising a connection device according to the invention, comprising a first tube and a second tube, which are connected to one another by the connection device.
- the bore of the second tube has an elongated shape.
- the head part after insertion into the bore of the second tube by 90 degrees can to make the tension.
- the bore of the second tube has a length which is smaller than the diameter of the first tube. This ensures that the bore of the second tube is not exposed or exposed when the two tubes are connected together, resulting in further advantages in terms of dirt accumulation.
- This technical embodiment applies to all connection systems according to the present invention.
- first tube and the second tube each have a round cross-section.
- first tube and the second tube can each also have a polygonal cross section.
- FIG. 1 is an exploded view of an inventive
- FIG. 2 shows a sectional view through a first tube and a second tube, which are connected by a connecting device according to the invention
- Fig. 3 is a perspective view of a first tube and a second
- Fig. 4 is a schematic representation of an alternative form for the
- Fig. 5 is an exploded view of an inventive
- FIG. 6 shows a sectional view through a first pipe and a second pipe, which are connected by a connecting device according to the invention
- Fig. 7 is an exploded view of an inventive
- FIG. 8 is a sectional view through a first tube and a second tube, which are connected by a connecting device according to the invention
- FIG. 9 is a sectional view through a first tube and a second tube with groove, which are connected by a connecting device according to the invention.
- 10 is a sectional view through a first tube and a groove profile, which are connected by a connecting device according to the invention
- 11 is a perspective view of a first tube and a plate (left) or a profile (center) or a second tube (right), which are connected by a connecting device according to the invention
- connection possibilities with connecting device is a perspective view of connection possibilities with connecting device according to the invention.
- Fig. 13 is a perspective view of connection variants with
- Fig. 1 shows an exploded view of a connecting device 1 according to the invention, and a first tube 10 and a second tube 20.
- the connecting device 1 according to the invention essentially comprises an anchor-shaped connecting element 2, a radial bearing 6 and a clamping element 8.
- the connecting device 1 according to the invention an adapter Element 16, which however may also be omitted in a simplified embodiment.
- Fig. 2 shows a schematic sectional view of the connecting device 1 according to the invention of Fig. 1 and the first tube 10 and the second tube 20 in the assembled and clamped state.
- Fig. 3 shows a perspective view of the first tube 10, the second tube 20 and the connecting device 1 according to the invention in the assembled state in an external view.
- the armature-shaped connecting element 2 comprises a shank part 3 provided with a recess 4, which is conical in this example, and a head part 5.
- the head part 5 is designed to be inserted into a bore 21 of the second tube 20 and to be strained in this.
- the head part 5 in the example shown has an elongated shape and a width which is smaller than the width of the bore 21 of the second tube 20, and a length which is greater than the width of the bore 21 of the second tube 20 Head part 5 is inserted into the bore 21 and then rotated 90 degrees and clamped therein.
- the shaft part 3 is designed to be arranged in the tube interior 11 of the first tube 10. Furthermore, the shaft part 3 is designed to be received in a first opening 7 of the tensioning bearing 6 when the tensioning bearing 6 is inserted into a bore 12 of the first tube 10.
- the radial bearing 6 has a substantially elongated or sleeve-like shape, with a first opening 7, which is designed as a continuous transverse bore, and in which the shaft part 3 can be inserted positively.
- the length of the clamping bearing 6 substantially corresponds to the diameter of the first tube 10, so that the Inserted bearing 6 abuts in the inserted state on the opposite inner wall to the opening 12 and extends transversely through the tube interior 11, as can be clearly seen in Fig. 2.
- the two ends of the clamping bearing 6 are adapted to the shape of the tube 10.
- the outwardly exposed end 14 of the tensioning bearing 6 of the shape is adapted to the outer shape of the first tube 10 so as to be flush with the outer surface of the first tube 10, as seen in FIG. 2 and FIG.
- the shaft part 3 and corresponding to the first opening of the clamping bearing 6 may have a round cross-sectional shape, but any other suitable shape is possible.
- the armature-shaped connecting element 2 can, as can be seen in FIGS. 1 and 2, have a thickening in the shaft part 3 in the region which is assigned to the head part 5.
- This thickening can serve as a contact for a spring 15, which braces the armature-shaped connecting element 2 in the inserted state between the radial bearing 6 and the thickening of the shaft part 3 so that the armature-shaped connecting element 2 is biased away from the radial bearing 6 towards the second tube 20.
- This facilitates the bracing of the first tube 10 and the second tube 20 against the force of the spring 15 and also facilitates the release of the connecting device.
- the shaft part 3 of the anchor-shaped connecting element 2 has, as mentioned, a conical recess 4 in the example shown.
- the recess 4 is located in the interior of the clamping bearing 6 and serves together with the clamping element 8 for clamping the connecting device 1.
- the clamping element 8 has a tapered end 9, which engages in the conical recess 4 of the shape that moved by pressure on the conical surfaces, the armature-shaped connecting element 2 in the longitudinal direction of the first tube 10 and the shape of the second tube 20 clamped, as shown in FIG. 2 is clearly visible.
- the clamping element 8 has an external thread, and designed as an inner bore second opening 13 of the clamping bearing 6 also has a corresponding counter-thread, so that the clamping element 8 can be screwed in the clamping bearing 6.
- the clamping element 8 of the shape is arranged as in the radial bearing 6 that it is sunk and by means of a cover 19 or the like an edge and supernatant-free situation is given, so that the connecting device 1 according to the invention no outwardly projecting edges or projections having. It should be noted that when connecting the first tube 10 to the second tube 20, the connecting device 1 according to the invention is first inserted into the first tube 10.
- the clamping element 8 is first screwed only a little into the radial bearing 6, so that the tapered end 9 of the clamping element 8 only a little, for example, a few millimeters, protrudes into the recess 4 of the shaft part 3 to this in the first tube 10, ie in the interior 11 set.
- the armature-shaped connecting element 2 is biased away from the radial bearing 6, so that the head part 5 can be inserted into the bore 21 of the second tube 20.
- the connecting device 1 according to the invention comprises an additional adapter element 16 which is placed on one end of the first tube 10.
- the outer side of the adapter 16 is in alignment with the outer shape of the first tube 10, and the end face 17 of the adapter element 16 is adapted to the outer shape of the second tube 20 so that in the connected state, as can be seen from FIGS. 2 and 3, no edges or slits remain open and could allow accumulation of dirt.
- the adapter element 16 further has an inner bore 18 for passing through the shaft part 3 of the armature-shaped connecting element 2, as can be clearly seen in FIG.
- the diameter of the inner bore 18 therefore essentially corresponds to the diameter of the thickened end of the shaft part 3, in order to enable a positive engagement, as can be seen from FIG.
- the adapter element 16 has the effect that the second tube 20 facing the end of the tube 10 does not have to be adapted to the outer shape of the tube 20, since that is done by the adapter element 16 and the adaptation of its end face 17. Furthermore, the adapter element 16, after inserting the connecting device 1 according to the invention into the interior 11 of the first tube 10, allows the head part 5 to be inserted into the bore 21 of the second tube 20 and then rotated together with the adapter element 16, to be clamped in the bore 21. For this purpose, it is only necessary that the bore 21, as shown in Fig. 1, has an elongated shape.
- the connecting device 1 may be formed without the adapter element 16.
- the second tube 20 facing the end of the first tube 10 must then be adapted to the outer shape of the second tube 20.
- the bore 21 in this case must have an elongated shape with a lateral bulge 22, as shown in FIG. 4 is shown schematically. In this way, the head part 5 can be inserted into the lateral bulge 22 of the bore 21 and then moved downwards or upwards in the bore 21 in order to clamp the two tubes together.
- connection device 1 according to the invention and the connection systems according to the invention comprising a connection device 1 according to the invention and the first tube 10 and the second tube 20, are particularly advantageous in that there are no projections or outer edges, and also no exposed slots or grooves, as can be clearly seen from Figs. 2 and 3.
- the tubes 10 and 20 are designed so that they have no rivets or grooves, and advantageously no edges, but have a smooth outer surface.
- the application is particularly advantageous in situations where a high level of hygiene is required, such as in pharmaceutical applications, in clean room applications, in food applications, etc.
- connection device 1 according to the invention can be made of different materials which may be selected depending on the application.
- the connecting device 1 according to the invention may be made of a single material, but the various elements of the connecting device 1 may also be made of different materials.
- the size ratios of the various elements of the connecting device 1 according to the invention and the cross sections used in each case can vary depending on the particular application and be selected accordingly.
- FIG. 5 shows an exploded view of a further exemplary embodiment of the connecting device 1 according to the invention without an adapter element 16, as well as a first tube 10 and a second tube 20.
- the connecting device 1 according to the invention again substantially comprises the anchor-shaped connecting element 2, the radial bearing 6 and the clamping element 8 6 shows correspondingly a schematic sectional view of the exemplary embodiment of the connecting device 1 according to the invention from FIG. 5 and the first tube 10 and the second tube 20 in the assembled and tensioned state.
- FIGS. 5 and 6 The construction of the connecting device 1 according to the invention of FIGS. 5 and 6 is similar to that shown in FIGS. 1 and 2 - and simplified without adapter element 16 - embodiment. The same elements are provided with the same reference numerals and reference is made in this regard to the description of FIGS. 1 and 2.
- this embodiment of the connecting device 1 according to the invention of FIGS. 5 and 6 comprises a bushing 23.
- This bushing 23 is designed such that it can be guided inside the pipe 11 of the pipe 10.
- this bushing 23 has an opening 24 which is designed to guide the anchor-shaped connecting element 2, in particular its shaft part 3.
- the sleeve 23 and the clamping element 6 can be inserted into the tube 10, as it already described above.
- the anchor-shaped connecting element 2 - as shown in FIG. 6 can be clearly seen - inserted on one side of the sleeve 23 in the opening 24 and pushed through this until the shaft part 3 on the other side of the sleeve 23 exits.
- the exiting shaft part 3 can be further inserted into the opening 7 of the clamping bearing 6.
- the clamping element 8 can then engage in the recess 4 of the shaft part 3.
- both the armature-shaped connecting element 2 and the radial bearing 6 can be further fixed by the sleeve 23.
- the bushing 23 prevents a lateral displacement of the armature-shaped connecting element 2 and the clamping bearing 2 in the tube 10.
- the bushing 23 is advantageously provided on its outside with at least one cutout 25. Shown is a bush 23 with a plurality of recesses 25, in particular with six recesses 25, which are groove-shaped.
- the at least one cutout 25 of the bush 23 serves to accommodate a weld in the pipe interior 11 when inserting the bushing 23 into the pipe 10. As a result, the insertion of the bush 23 into the tube 10 is made possible or simplified.
- Several recesses 35 are advantageous because in this case a position determination of the weld in the tube interior 11 is not necessary. Unlike in FIGS. 1 and 2, for the embodiment of the connecting device 1 according to the invention of FIGS.
- the recess 4 is also formed on the shaft part 3 of the armature-shaped connecting element 2 as a slot.
- This shape of the recess 4 facilitates the insertion and attachment of the armature-shaped connecting element 2 in the tubes 10 and 20.
- this form is advantageous for the case that the tube 10 is to connect two tubes 20 together, or that no adapter element 16 is provided is. Namely, the armature-shaped connecting element 2 can first be completely inserted into the tube 10 for installation and, in this state, nevertheless be fixed with the clamping element 8 due to the oblong hole.
- the clamping element 8 can be released again, so that the armature-shaped connecting element 2, for example, caused by the spring 15, are pushed into the bore 21 of the tube 20 and, as already described, braced can be.
- FIG. 7 shows an exploded view of a further exemplary embodiment of the connecting device 1 according to the invention with adapter element 16 and bushing 23, as well as a first tube 10 and a second tube 20.
- the connecting device 1 according to the invention again substantially comprises the anchor-shaped connecting element 2, the radial bearing 6 and the tensioning element 8.
- 8 shows correspondingly a schematic sectional view of the embodiment of the connecting device 1 according to the invention from FIG. 7 and the first tube 10 and the second tube 20 in the assembled and tensioned state.
- the structure of the connecting device 1 according to the invention of FIGS. 7 and 8 is similar to that of the embodiment of FIGS. 5 and 6, but with an adapter element 16.
- the same elements are again provided with the same reference characters and it is in this regard to the description of FIGS 1 and 2 referenced.
- the embodiment of the connecting device 1 according to the invention of FIGS. 7 and 8 comprises both the bushing 23 and the slot 4 formed as a slot, which have already been described above with respect to FIGS. 5 and 6.
- FIGS. 9 and 10 show advantageous applications of all embodiments of the connecting device 1 according to the invention.
- the armature-shaped connecting element 2 can in fact be connected to a groove 27 on the basis of its head part 5. At least one such groove 27 may, for example, be present on the outside of a tube 20 (see FIG. 9), or may be present on a separate profile 26 (see FIG. 10), which may then be attached to a tube 20, for example.
- the head part 5 can either be inserted at any point in a groove 27 of the tube 20 or the profile 26 and the anchor-shaped connecting part 2 then rotated by 90 ° and braced. Alternatively, the head part 5 can already be inserted in the final position from above and along the groove 27 in this.
- a connection between the tube 10 and tube 20 or profile 26 are attached.
- the application of the connecting device 1 according to the invention is extremely flexible overall.
- a first tube 10 with the connecting device 1 can be attached to a second tube 20 or to a profile 26 with at least one groove 27.
- a pipe 10 can be attached to a plate 28.
- the anchor-shaped connecting element 2 can be inserted into, for example, a recess in the plate 28 and clamped therein with the head part 5 or screwed to a head part 5 which has a thread.
- FIG. 12 An overview of different connection possibilities with the connecting device 1 according to the invention are shown in FIG. 12. For each of these connection options is also shown which elements the connecting device 1 advantageously comprises.
- the radial bearing 6 and the anchor-shaped Connecting element 2 are always part of the connecting device 1.
- For a connection between a first tube and a profile 26 or a plate 28 preferably at least the bushing 23, for the profile 26 optionally still the adapter 16 if necessary.
- FIG. 13 also shows connection variants that are possible with the connection device 1 according to the invention. Namely, when attaching the pipe 10 to the connecting device 1 of the invention on a pipe 20 (as exemplified in Fig. 13), a plate 28, or a profile 26, it is both possible to mount the pipe 10 perpendicular thereto, but it is also an oblique attachment, in particular at any angle, or attachment to miter possible.
- the connecting device 1 according to the invention can, for example, two tubes 10 and 20 along in their Ers trecking device together, for example. For pipe extension, are attached.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015219187.7A DE102015219187A1 (en) | 2015-10-05 | 2015-10-05 | Connecting device for rigidly connecting a first tube to a second tube |
PCT/EP2016/073801 WO2017060306A1 (en) | 2015-10-05 | 2016-10-05 | Connecting device for rigidly connecting a first pipe to a second pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3359825A1 true EP3359825A1 (en) | 2018-08-15 |
Family
ID=57068133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16775750.9A Withdrawn EP3359825A1 (en) | 2015-10-05 | 2016-10-05 | Connecting device for rigidly connecting a first pipe to a second pipe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3359825A1 (en) |
DE (1) | DE102015219187A1 (en) |
WO (1) | WO2017060306A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018105903U1 (en) | 2018-10-16 | 2020-01-20 | Rk Rose + Krieger Gmbh Verbindungs- Und Positioniersysteme | Connection arrangement for at least two profile elements |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE319046B (en) * | 1969-03-11 | 1969-12-22 | A Offenbroich | |
US6227752B1 (en) * | 1999-11-16 | 2001-05-08 | Da International, Ltd. | Failsafe weld-free method of joining tubular elements |
DE102009042381A1 (en) * | 2009-09-21 | 2011-04-07 | Maytec Aluminium Systemtechnik Gmbh | Connecting device for rigid connection of hollow profile with profile, has clamping element arranged in opening of insert ball bearing and clamping connecting element by connection part in hollow profile |
ES2449312T3 (en) * | 2011-07-27 | 2014-03-19 | David Platre | Assembly element and furniture in kit comprising such an assembly element |
-
2015
- 2015-10-05 DE DE102015219187.7A patent/DE102015219187A1/en not_active Withdrawn
-
2016
- 2016-10-05 EP EP16775750.9A patent/EP3359825A1/en not_active Withdrawn
- 2016-10-05 WO PCT/EP2016/073801 patent/WO2017060306A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2017060306A1 (en) | 2017-04-13 |
DE102015219187A1 (en) | 2017-04-06 |
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