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
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
  • F16L25/0036—Joints for corrugated pipes
  • F16L25/0045—Joints for corrugated pipes of the quick-acting type

Definitions

• the invention relates to a device for connecting to one end of a corrugated pipe.
• a device for connecting to one end of a corrugated tube is known from US-A-5,335,945.
• This device has a receptacle section made of a flexible, stretchable plastic material, into which one end of a corrugated tube can be pushed until it comes into contact with a stop flange while the receptacle section is radially expanded. Due to the radially inward pressure force exerted by the receiving section on the end of the corrugated tube, the corrugated tube is tightly connected to the device.
• one end of a corrugated pipe can be connected to a fluid line system, for example via a connecting section of the device, but it is due to the opposing requirements, namely a pressure force that is as large as possible for reasons of tightness and a force that is as low as possible for handling reasons that is required for insertion , can only be interpreted in practice with a compromise that is not always reliable.
• the invention has for its object to provide a device for connecting to one end of a corrugated tube, which is characterized by easy handling with maximum tightness.
• This object is achieved according to the invention with a device for connecting to one end of a corrugated tube with an insertion section which can be inserted into the end of the corrugated tube and which has at least one cone section with one in an insertion direction of one Has inserting end pioneering sliding surface, and with a clamp arrangement arranged at a radial distance from the insertion section, which has at least one engagement lug that can be inserted between two elevations of the corrugated tube.
• one end of a corrugated tube can be pushed tightly onto the insertion section with a slight expansion and can be connected to the device in a reliable manner by the clamp arrangement designed with at least one engaging lug.
• FIG. 1 is a partially sectioned perspective view of a first embodiment of the invention
• FIG. 2 in a partially sectioned perspective view of a second embodiment of the invention
• FIG. 3 in a partially sectioned perspective view of a third embodiment of the invention.
• FIG. 1 shows a partially sectioned perspective view of a first embodiment of a device according to the invention.
• the exemplary embodiment according to FIG. 1 has an elongated connecting section 1 which, at an insertion end 2, has an insertion tapering in the direction of the insertion end 2.
• cone 3 is formed.
• a number of rounded sealing beads 4 are formed, which in the longitudinal direction of the connection section 1 give the connection section 1 a radial undulating cross section between a maximum value and a minimum value.
• the connecting section 1 serves to connect the device, for example, to a smooth-walled hose of a fluid line system, not shown in FIG. 1.
• an annular collar 5 is formed, which projects in radial directions beyond the maximum diameter of the sealing beads 4 and thus forms a stop from the side of the insertion end 2.
• a resilient first clamp bracket 6 and a resilient second clamp bracket 7 of a clamp arrangement are attached to the outside of the ring collar 5 and extend in the direction of an insertion end 8 opposite the insertion end 2.
• an elongated insertion section 9 starts from the ring collar 5 in the direction of the insertion end 8 in the extension of the insertion end 2.
• the clamp brackets 6, 7 are arranged essentially parallel and at a distance from the insertion section 9.
• the connecting section 1 and the insertion section 9 enclose a fluid channel 10 which extends from the insertion end 2 to the insertion end 8.
• a first cone section 11 is formed on the outside of the insert section 9, and a second cone section 12 is formed between the first cone section 11 and the collar 5.
• the cone sections 11, 12 each have a sliding surface 13 which rises relatively flat in an insertion direction from the insertion end 8 and a face which faces the annular collar 5 retaining surface 14 adjoining the associated sliding surface 13.
• the retaining surfaces 14 are set significantly steeper with respect to the longitudinal axis than the sliding surfaces 13, for example, as at right angles to the longitudinal axis of the device, as in the exemplary embodiment according to FIG. 1.
• the clamp brackets 6, 7 each have a radially inward-facing engaging nose 15 which faces the insertion end 8 and is slanted radially inward from the insertion end 8 in the direction of the collar 5 16 and a stop surface 17 facing away from the insertion end 8 and oriented essentially at right angles to the longitudinal axis of the device.
• FIG. 1 one end of a corrugated tube 18 is shown in FIG. 1, the wall of which is formed in the longitudinal direction with a sequence of radially oriented elevations and depressions.
• the end of the corrugated tube 18 is pushed over the insertion section 9 up to the stop on the annular collar 5, the areas of the wall closest to the longitudinal axis of the corrugated tube 18 on the sliding surfaces 13 of the cone sections 11, 12 fit and are slightly expanded compared to the original inner diameter. Because of the force acting radially inwards, a sealing of the corrugated tube 18 against the insertion section 9 is achieved.
• the engaging lugs 15 engage a radially outwardly projecting elevation of the wall of the corrugated tube 18 by abutment of the abutment surfaces 17 on radially inwardly sloping wall sections of the corrugated tube 18 after they have been bent during insertion of the corrugated tube 18 resilient clip bracket 6, 7 radially outwards over a number radially outwardly protruding elevations of the wall of the corrugated tube 18.
• the corrugated tube 18 is secured against unintentional pulling out of the device.
• FIG. 2 shows a partially sectioned perspective illustration of a second exemplary embodiment of the invention, wherein in the exemplary embodiments according to FIGS. 1 and 2, corresponding elements are provided with the same reference numerals and are not explained in more detail below if they match.
• the connecting section 1 of the exemplary embodiment according to FIG. 2 is channel-like and has a number of inside and outside elevations and depressions which are designed to receive and lock a coupling piece (not shown in FIG. 2) for connection to a fluid line system.
• the insertion section 9 of the exemplary embodiment according to FIG. 2 has a single cone section 19 with a sliding surface 13 inclined in accordance with the exemplary embodiment according to FIG. 1.
• the side of the sliding surface 13 pointing away from the insertion end 8 is closed rubber-like sealing body 20 which surrounds insertion section 9. This results in a particularly good seal of the corrugated tube 18 when a radially inward elevation in the wall of the corrugated tube 18 rests on the sealing body 20.
• the clip arrangement has an annular, closed sliding sleeve 21 which, in the axial direction, under compression of the clip brackets 6, 7 in the radial direction from a release recess 22 exposed in the illustration according to FIG. 2 over a in rieh device of the insertion end 8 flat rising sliding surface 23 in a in the region of the engaging lugs 15 in the bracket 6, 7 introduced locking recess 24 is displaceable.
• the clamp brackets 6, 7 are secured against radial outward expansion.
• the locking recess 24 has essentially radially oriented boundary sides, so that the sliding sleeve 21 can only be removed from the locking recess 24 after it has been snapped into the locking recess 24 after deliberate and relatively complex manipulation. As a result, even with relatively strong movements of the corrugated tube 18 in the region of the insertion end 8, it is practically impossible to overcome the locking caused by the engaging lugs 15.
• FIG. 3 shows a third exemplary embodiment of the invention in a partially sectioned perspective illustration, wherein in the exemplary embodiments according to FIG. 1, FIG. 2 and FIG. 3 corresponding elements are provided with the same reference symbols and are not explained in more detail below.
• the embodiment according to FIG. 3 like the embodiment according to FIG. 2, has a connecting section 1, which is designed like a channel and has a number of inside and outside elevations and depressions, which are used to receive and lock a coupling piece, not shown in FIG. 3 are set up to connect to a fluid line system.
• the insertion section 9 is formed over its entire length with a conical sliding surface 13 of a single cone section 19 which rises in the direction pointing away from the insertion end 8 and ends at a radially aligned end surface 25.
• a rubber-like sealing body 20 is slid onto the sliding surface 13 and the largest part of the end surface 25, on which a number of radial faces protrusions on the inside of the wall of a corrugated tube 18 come to rest.
• the clamp arrangement for fixing the corrugated tube 18 comprises a C-shaped snap ring 26 which can be inserted along a radially oriented insertion direction into a ring receptacle 28 provided in the region of the insertion end 8 and closed at the edge by an end flange 27.
• the snap ring 26 has a circumferential engagement nose 15 on the radially inside, which engages behind a radially outwardly projecting elevation of the wall of the corrugated tube 18 over a relatively large extent when the snap ring 26 is arranged as intended.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Joints That Cut Off Fluids, And Hose Joints (AREA)
• Feeding And Controlling Fuel (AREA)
• Joints With Sleeves (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34672579

Family Applications (1)

Country Status (8)

Cited By (4)

Families Citing this family (10)

Citations (6)

Family Cites Families (13)

• 2003
  • 2003-12-11 DE DE10357892A patent/DE10357892A1/de not_active Withdrawn
• 2004
  • 2004-11-25 ES ES04803262T patent/ES2298846T3/es not_active Expired - Lifetime
  • 2004-11-25 JP JP2006543417A patent/JP2007514108A/ja not_active Withdrawn
  • 2004-11-25 AT AT04803262T patent/ATE384904T1/de not_active IP Right Cessation
  • 2004-11-25 CN CNB2004800369684A patent/CN100420893C/zh not_active Expired - Fee Related
  • 2004-11-25 DE DE502004006084T patent/DE502004006084D1/de not_active Expired - Fee Related
  • 2004-11-25 EP EP04803262A patent/EP1694997B1/de not_active Expired - Lifetime
  • 2004-11-25 WO PCT/EP2004/013353 patent/WO2005057072A1/de not_active Ceased
  • 2004-11-25 US US10/596,271 patent/US20070126230A1/en not_active Abandoned

Patent Citations (6)

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