WO2016005442A1 - Dispositif de fixation amélioré - Google Patents

Dispositif de fixation amélioré Download PDF

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Publication number
WO2016005442A1
WO2016005442A1 PCT/EP2015/065591 EP2015065591W WO2016005442A1 WO 2016005442 A1 WO2016005442 A1 WO 2016005442A1 EP 2015065591 W EP2015065591 W EP 2015065591W WO 2016005442 A1 WO2016005442 A1 WO 2016005442A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastening
shank
fastening nut
side wall
nut
Prior art date
Application number
PCT/EP2015/065591
Other languages
English (en)
Inventor
Karsten BRINKMANN
Jonathan Pierce
Original Assignee
Jaguar Land Rover Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jaguar Land Rover Limited filed Critical Jaguar Land Rover Limited
Priority to EP15735685.8A priority Critical patent/EP3167218A1/fr
Publication of WO2016005442A1 publication Critical patent/WO2016005442A1/fr

Links

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
    • F16L23/00—Flanged joints
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • F16L23/08—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
    • 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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/02—Hose-clips
    • F16L33/04—Hose-clips tightened by tangentially-arranged threaded pin and nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/02—Nuts or like thread-engaging members made of thin sheet material
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/044—Nut cages

Definitions

  • the present invention relates to an improved fastening device for joining tubular bodies together, such as vehicle exhaust system components.
  • the invention also relates to an exhaust system of a vehicle comprising a fastening device for joining tubular bodies.
  • Band clamps including V-band clamps, are widely known in the art.
  • Band clamps generally comprise an elliptically shaped band (e.g. a circularly shaped band) extending from a first band end to a second band end.
  • the first and second band ends are configured with a clamp tightening mechanism for bringing the first and second band ends together.
  • the clamp tightening mechanism typically comprises first and second end flanges extending outward, respectively, from the first and second band ends.
  • the first and second end flanges are movable towards each other in order to tighten the band clamp, and are also movable away from each other to loosen the band clamp.
  • the tightening mechanism further comprises a fastening bolt having an at least partly threaded shank and a fastening nut.
  • the fastening nut comprises a threaded portion suitable for engagement with the fastening bolt's at least partly threaded shank.
  • the first and second end flanges are configured with alignable bolt holes for receiving the fastening bolt's shank.
  • the shank of the fastening bolt is passed through both alignable bolt holes, such that the bolt head is seated on the outside surface of the first end flange, and the at least partly threaded shank exits through the bolt hole of the second end flange and is engaged with the threaded portion of the fastening nut seated on the outside surface of the second end flange.
  • the first and second end flanges are brought closer together to tighten the band clamp by varying the position of engagement of the nut along the length of the shank. Specifically, the band clamp is tightened by reducing the distance of separation between the position of engagement of the nut along the bolt shank and the bolt head, and loosened by increasing the distance of separation between the position of engagement of the nut along the bolt shank and the bolt head.
  • a V-band clamp is a special class of band clamp.
  • the clamp comprises two ribs joined at one end by a joint, enabling each rib to rotate freely relative to the other rib.
  • the ribs are semi-circular in shape, although other shapes are also provided for and selected to complement the shape of the object around which the clamp is to be affixed.
  • the free end of each rib comprises one of the first and second end flanges of the clamp tightening mechanism.
  • the joint facilitates fixation of the band around tubular-shaped objects, but the V-band clamp is otherwise structurally substantially similar to the afore- described band clamp.
  • a tool such as a wrench or a socket tool
  • a user is required with one hand to hold the fastening nut in place using the tool, and with the other free hand to drive the fastening bolt for engagement with the nut.
  • a fastening device comprising a band clamp, a fastening bolt and a fastening nut.
  • the band clamp comprises a band configured with first and second end flanges extending outward from respectively first and second ends of the band.
  • the fastening bolt comprises a shank provided with first engagement means, for example the first engagement means being in the form of a screw thread, the first and second end flanges being arranged in confronting relation and being arranged to be drawn together via the fastening bolt in order to bring the first and second band ends together for tightening the clamp.
  • the fastening nut comprises: a first side wall comprising a first face having an alignment hole for guiding the shank of the fastening bolt through the first side wall; a second side wall comprising a second face having second engagement means, for example in the form of a threaded bore, aligned with the alignment hole of the first side wall and arranged to engage the first engagement means of the shank.
  • the first and second faces are arranged in spaced, opposing relation and are joined together by a spacing wall extending between the first and second faces.
  • the first side wall and the second side wall define a volume arranged to receive the first end flange of the band clamp between the first and second faces, such that in use as the shank is guided through the alignment hole and the first end flange, the first face abuts with the first end flange to restrict displacement of the fastening nut relative to the fastening bolt in a direction parallel to a length of the shank to facilitate engagement of the shank with the second engagement means of the fastening nut.
  • Displacement of the fastening nut is restricted by the arrangement of first side wall and second side wall, which arrangement defines the volume arranged to receive the first end flange between the first and second faces.
  • the fastening nut is displaceable in a direction parallel to the bolt shank until the first face abuts with the first end flange, and subsequent displacement of the fastening nut in a direction parallel to the bolt shank is prevented as the bolt shank engages with the fastening nut's second engagement means.
  • the bolt shank may be engaged with the fastening nut without requiring the operator to hold the nut in place relative to the fastening bolt. This is particularly advantageous when using the fastening device in restricted spaces, such as within engines or exhaust systems.
  • a further advantage of the fastening device results from its modular design.
  • the band and the fastening nut are separable, each is individually replaceable as required. For example, for maintenance purposes.
  • This advantage arises as a direct result of the fastening nut's configuration, which is configured to receive the first end flange of the band clamp (e.g. it rests over the flange, and is not otherwise formed integral with the clamp, or fixated thereto).
  • This configuration enables the fastening nut to be removed with ease and exchanged, without also having to exchange the clamp.
  • the clamp may be exchanged independently from the fastening nut by disengaging the fastening nut from the clamp.
  • the fastening nut may also be easily replaced with a fastening nut having a different sized threaded bore as may be required for a specific application. In this way, the configuration of the fastening device also facilitates the swapping and interchanging of different fastening nuts with different sized clamps as required.
  • the fastening device may comprise a rotation arresting member extending between the first and second faces of the fastening nut.
  • the rotation arresting member is arranged in use to abut with the band clamp's band when the fastening nut is rotated relative to the band clamp, such that in use as the shank engages with the second engagement means of the fastening nut, the fastening nut is rotatable until the rotating arresting member abuts with the band clamp thereby restricting rotation of the fastening nut relative to the fastening bolt.
  • the fastening bolt is rotatable relative to the rotation arresting member. This enables the bolt shank to engage with the fastening nut.
  • the fastening nut's spacing wall may be configured as the rotation arresting member.
  • the fastening nut's spacing wall restricts rotation of the fastening nut relative to the fastening bolt, thus facilitating engagement of the fastening bolt with the fastening nut.
  • the fastening device's fastening nut may comprise at least one edge wall extending between the first and second faces, and wherein the edge wall is configured as the rotation arresting member. The at least one edge wall further restricts the rotation of the fastening nut relative to the fastening bolt. In certain embodiments the at least one edge wall may be arranged substantially perpendicular to the spacing wall.
  • the second engagement means may comprise a threaded bore suitable for receiving the at least partly threaded shank of the fastening bolt. This enables the bolt shank to engage with the fastening nut, for tightening or loosening of the band clamp.
  • the threaded bore may comprise a threaded cylinder. This improves the grip with which the bolt shank is gripped, by distributing stress over a greater threaded surface area, and also by increasing the surface area that engages with the shank thread.
  • the threaded cylinder may be arranged to extend substantially perpendicular with respect to the second side wall of the fastening nut.
  • the alignment hole of the fastening nut may form a filleted edge with the first side wall. This helps to guide the bolt shank through the first end flange for engagement with the second engagement means of the fastening nut. This is particularly useful when the fastening device is used in a setting where the operator does not have a direct line of sight of the fastening device, and guiding the bolt shank through the end flange can prove difficult.
  • the filleted edge helps to guide the shank through the end flange, without first requiring that the bolt shank and the alignment hole are perfectly aligned, as would otherwise be required.
  • the first side wall, the second side wall and the spacing wall of the fastening nut may be formed from a single sheet of material.
  • the at least one edge wall of the fastening nut may be formed from the same sheet of material as the first side wall, the second side wall and the spacing wall. This greatly simplifies manufacturing of the fastening nut.
  • the material may comprise a metal, and/or a plastic.
  • the fastening device's band clamp may relate to a V-band clamp.
  • a fastening device comprising a band clamp, a fastening bolt and a fastening nut.
  • the band clamp comprises a band configured with first and second end flanges extending outward from respectively first and second ends of the band.
  • the fastening bolt comprises a shank provided with first engagement means, the first and second end flanges being arranged in confronting relation and being arranged to be drawn together via the fastening bolt in order to bring the first and second band ends together for tightening the clamp.
  • the fastening nut comprises: a first side wall comprising a first face, the first side wall having an alignment hole for guiding the shank of the fastening bolt through the first side wall; a second side wall comprising a second face having second engagement means aligned with the alignment hole of the first side wall and arranged to engage the first engagement means of the shank of the fastening bolt, the first and second faces being arranged in spaced, opposing relation and being joined together by a spacing wall extending between the first and second faces; and at least one edge wall extending between the first and second faces.
  • the first side wall, the second side wall, the at least one edge wall, and the spacing wall define a volume arranged to receive the first end flange of the band clamp between the first and second faces, such that in use as the shank is guided through the alignment hole and the first end flange, the first face abuts with the first end flange to restrict displacement of the nut relative to the fastening bolt in a direction parallel to a length of the shank to facilitate engagement of the first engagement means of the shank with the second engagement means of the fastening nut.
  • the at least one edge wall is arranged in use to abut with the band when rotated relative to the band clamp, such that in use as the first engagement means of the shank engages with the second engagement means of the fastening nut, the fastening nut is rotatable until the at least one edge wall abuts with the band clamp thereby restricting rotation of the fastening nut relative to the fastening bolt.
  • the fastening device may be operated with a single hand.
  • a vehicle comprising a turbocharger and an exhaust system, the turbocharger being connected to the exhaust system via the previously described fastening device.
  • a further aspect of the invention relates to a fastening nut for use with the aforementioned fastening device.
  • a further aspect of the invention relates to a vehicle comprising the aforementioned fastening device.
  • Yet a further aspect of the invention relates to an assembly comprising a turbocharger and an exhaust system, the turbocharger being connected to the exhaust system via the aforementioned fastening device.
  • FIGS. 1 a, 1 b, 1 c and 1 d are schematic illustrations of a fastening device in accordance with an aspect of the invention, the fastening device comprising a band clamp, specifically a V-band clamp, a fastening bolt and a fastening nut, and wherein:
  • Figure 1 a is a front view of the fastening device
  • Figure 1 b is a side view of the fastening device
  • Figure 1 c is a perspective view of the fastening device.
  • Figure 1 d is a top view of the fastening device
  • Figures 2a, 2b, 2c and 2d are schematic illustrations of the fastening nut of Figures 1 a to 1 d, and wherein:
  • Figure 2a is a front view of the fastening nut's first side wall
  • Figure 2b is a side view of the fastening nut showing an edge wall of the fastening nut
  • Figure 2c is a perspective view of the fastening nut
  • Figure 2d is a top view of the fastening nut, which shows the fastening nut's spacing wall;
  • Figures 3a, 3b, 3c and 3d are schematic illustrations of an alternative fastening nut for use with the band clamp and fastening bolt of Figures 1 a to 1 d, in accordance with an alternative embodiment of the invention, wherein:
  • Figure 3a is a front view of the fastening nut's first side wall
  • Figure 3b is a side view of the fastening nut
  • Figure 3c is a perspective view of the fastening nut
  • Figure 3d is a top view of the fastening nut, showing the fastening nut's spacing wall;
  • Figure 4 is a schematic cut-away side view diagram of a turbo fixated to an exhaust with the fastening device of Figures 1 a, 1 b, 1 c and 1 d;
  • FIG 5 is a perspective illustration of a vehicle comprising the fastening device of any one of Figures 1 a, 1 b. 1 c, 1 d and/or the nut of Figures 2a, 2b, 2c, 2d or Figures 3a, 3b, 3c, 3d.
  • DETAILED DESCRIPTION is a perspective illustration of a vehicle comprising the fastening device of any one of Figures 1 a, 1 b. 1 c, 1 d and/or the nut of Figures 2a, 2b, 2c, 2d or Figures 3a, 3b, 3c, 3d.
  • FIGS 1 a through 1 d illustrate different schematic views of a fastening device 1 in accordance with an embodiment of the invention.
  • the fastening device 1 comprises a band clamp, which in the illustrated embodiment is a V-band clamp comprising a first rib 3 and a second rib 5, the ribs being joined at one end by a joint 7.
  • the joint 7 enables each rib 3, 5 to rotate about the joint 7 independently from the other rib.
  • the first rib 3 comprises a first end flange 9 extending outward from a first band end 1 1 .
  • the second rib 5 comprises a second end flange 13 extending outward from a second band end 15.
  • the first and second end flanges 9, 13 are each configured with a hole arranged to receive a shank 17 of a fastening bolt 19.
  • the shank 17 is provided with first engagement means in the form of a screw thread.
  • the holes allow the shank 17 to pass through each end flange 9, 13 such that the fastening bolt head 23 abuts the second end flange 13, and the shank's free end 25 extends through the first end flange 9 where it is arranged for engagement with a fastening nut 21 .
  • the first and second end flanges 9, 13 are arranged in confronting relation, and are arranged to be drawn together via the fastening bolt 19, in order to bring the first and second band ends 1 1 , 15 closer together to tighten the fastening device - e.g. by shortening the distance of separation ⁇ between the first and second band ends 1 1 , 15.
  • the fastening device 1 is loosened by increasing the distance of separation ⁇ between the first and second band ends 1 1 , 15.
  • the diameter D of the fastening device 1 is varied to accommodate fixation around tubular-shaped objects, such as vehicle exhaust components for example.
  • the fastening bolt's threaded shank 17 is configured to engage with the fastening nut 21 in order to fixate the distance of separation ⁇ between the first and second band ends 1 1 , 15.
  • the fastening nut 21 is configured with second engagement means in the form of a threaded bore suitable for engagement with the screw thread of the bolt shank 17.
  • the first and second band ends 1 1 , 15 are drawn together or driven apart by varying the position of engagement of the fastening nut's engagement means along the length of the threaded shank 17. This is achieved by rotating the threaded shank 17 relative to the fastening nut 21 , and specifically by rotating the threaded shank 17 relative to the fastening nut's second engagement means.
  • a clockwise rotation of the shank 17 relative to the fastening nut 21 decreases a distance of separation a between the bolt head 23 and the position of engagement of the fastening nut's engagement means along the length of the bolt shank 17, to tighten the fastening device.
  • an anti-clockwise rotation of the shank 17 relative to the fastening nut 21 increases the distance of separation a between the bolt head 23 and the position of engagement of the fastening nut's engagement means along the length of the bolt shank 17.
  • the fastening device 1 also comprises a washer 26 fitted to the bolt 19, and located between the first and second end flanges 9, 13.
  • FIGs 2a, 2b, 2c and 2c illustrate different perspective views of the fastening nut 21 .
  • the fastening nut 21 comprises a first side wall 27, and a second side wall 29, both of which are visible in Figures 2b, 2c and 2d.
  • the first side wall 27 comprises a first face 31 , which is obscured in Figure 2a but is indicated with a broken line in Figures 2b and 2c.
  • the second side wall 29 comprises a second face 33, visible in Figures 2b and 2c.
  • the first face 31 and the second face 33 are arranged in spaced, opposing relation, and are joined together by a spacing wall 35, which extends between the two faces 31 , 33.
  • the first side wall 27 is configured with an alignment hole 37 suitable for guiding the fastening bolt's shank 17 through the first side wall 27 and into second engagement means 39 in the form of a threaded bore comprised in the second side wall 29.
  • the alignment hole 37 is visible in Figures 2a and 2c.
  • the alignment hole may be threaded in certain embodiments.
  • the second engagement means comprises a threaded cylinder 41 aligned with the alignment hole 37, and arranged to receive and engage with the fastening bolt's shank 17. Accordingly, the diameter of the threaded cylinder is complementary to the diameter of the bolt shank.
  • the threaded cylinder 41 is arranged to extend substantially outward from and perpendicular to the second side wall 29. The threaded cylinder 41 improves shank grip, by distributing stress over a greater threaded surface area, and also by increasing the surface area that engages with the shank thread.
  • Alternative engagement means configurations are envisaged that fall within the scope of the present invention, and which achieve the same desired effect.
  • the first side wall 27, the second side wall 29, and the spacing wall 35 define a volume 43 arranged to receive the fastening device's first end flange 9.
  • the fastening nut's first and second side walls 27, 29 and the spacing wall 35 bound a volume 43, which is located within the fastening nut 21 and has been indicated in Figure 2b via the broken line.
  • the volume 43 is suitable for receiving the first end flange 9.
  • the fastening nut 21 sits atop the first end flange 9, which is received within the defined volume 43, as shown in Figures 1 a, 1 c, and 1 d.
  • the threaded cylinder 41 , and the alignment hole 37 are configured to both align with the hole present in the first end flange 9, such that the bolt shank 17 may be passed through the alignment hole 37 and the first end flange 9 for engagement with the threaded cylinder 41 .
  • the nut's first face 31 abuts with the first end flange 9, such that displacement of the fastening nut 21 relative to the fastening bolt 19, in a direction parallel to a length of the bolt shank 17, is restricted.
  • Restricting the movement of the fastening nut 21 relative to the fastening bolt 19 facilitates engagement of the bolt shank 17 thread with the threaded cylinder 41 , such that thread engagement is achievable without the necessity of an operator holding the nut 21 in place relative to the fastening bolt 19, using a tool or otherwise.
  • the fastening device and specifically the fastening nut comprises a rotation arresting member extending between the nut's first and second faces.
  • the rotation arresting member is arranged in use to abut with the band when the fastening nut is rotated relative to the band clamp, in order to restrict rotation of the nut relative to the fastening bolt. Restricting rotation of the nut relative to the bolt shank further improves the ease with which the bolt shank 17 is engageable with the fastening nut's second engagement means. In this way, both displacement of the nut in a direction parallel to the length of the bolt shank and rotation relative to the bolt shank are restricted.
  • the fastening nut 21 comprises at least one edge wall arranged substantially perpendicular to the spacing wall 35.
  • the fastening nut 21 comprises two edge walls extending between the first and second faces 31 , 33.
  • a first edge wall 45 is visible in Figures 2b and 2c.
  • the second edge wall which is not visible in Figures 2b and 2c, is arranged in confronting relation relative to the first edge wall 45.
  • the first edge wall 45 and second edge wall, in combination with the first and second side walls 27, 29, and the spacing wall 35 further bound the defined volume 43 arranged to receive the first end flange 9.
  • the first edge wall 45 is configured to abut with the band clamp, in order to arrest rotation of the fastening nut 21 relative to the bolt shank 17.
  • the first edge wall 45 is arranged to abut with any one of the first end flange 9, the first band end 1 1 , or the first rib 3, as the fastening nut 21 rotates in a clockwise direction relative to the bolt shank 17.
  • the second edge wall is arranged to abut with any one of the first end flange 9, the first band end 1 1 , or the first rib 3, as the fastening nut 21 rotates in an anti-clockwise direction relative to the bolt shank 17.
  • the first edge wall and the second edge wall are arranged substantially perpendicular to the spacing wall 35 and to the first and second faces 31 , 33.
  • Alternative configurations of rotation arresting member are envisaged which do not require a first or second edge wall, such as the embodiment illustrated in Figures 3a to 3d and discussed below. It is to be appreciated that the fastening nut 21 of Figures 2a to 2d could function equally well if configured with one edge wall.
  • the function of the rotation arresting member may be carried out by different structural elements of the fastening nut depending on the relative direction of rotation of the fastening nut 21 relative to the bolt shank 17.
  • the fastening nut 21 is configured with the first edge wall 45 only, then the first edge wall 45 acts as the rotation arresting member for clockwise rotation of the fastening nut 21 relative to the bolt shank 17, whilst the spacing wall 35 acts as the rotation arresting member for anti-clockwise rotation of the fastening nut 21 relative to the bolt shank 17.
  • Figures 3a, 3b, 3c, and 3d illustrate an alternative embodiment of the fastening nut 47.
  • the illustrated fastening nut 47 shares all the same structural features with the embodiment illustrated in Figures 2a to 2d with the exception of the first edge wall 45 and the second edge wall, which are both absent.
  • the second side wall differs from the second side wall 29 of previous embodiments in that the second side wall is a reinforced second side wall 49, which is substantially thicker than the second side wall 29 of the previous embodiment.
  • FIGs 3a to 3d features common to the embodiment illustrated in Figures 2a to 2d share the same numbering, whereas differing features are numbered differently.
  • the spacing wall 35 is configured as the rotation arresting member, and is configured to abut with any one of the first end flange 9, or the first band end 1 1 , in use as the fastening nut 47 rotates relative to the bolt shank 17 to restrict rotation of the fastening nut 47 relative to the bolt shank 17.
  • the reinforced second side wall 49 is configured with the second engagement means 39 in the form of the threaded bore, which is completely contained within the reinforced second side wall 49 and is indicated by the hatched line in Figures 3b and 3c.
  • the reinforced second side wall 49 provides similar advantages to the threaded cylinder 41 of the previous embodiment - namely, it improves shank grip, by distributing stress over a greater threaded surface area, and by increasing the surface area that engages with the shank thread. Furthermore, the reinforced second side wall 49 is very robust and is well suited to withstand the inevitable wear and tear, which occurs through normal use. In addition, the embodiment illustrated in Figures 3a to 3d may be readily manufactured, for example in a press.
  • the fastening nut 47 of Figures 3a to 3d is fitted to the band clamp's first end flange 19 in the same way as described in relation to the embodiment of Figures 2a to 2d.
  • the first side wall 27, the reinforced second side wall 49 and the spacing wall 35 define the volume 43 arranged to receive the first end flange 19.
  • the fastening nut 47 benefits from the same advantages as the previously described fastening nut 21 , in particular when used in combination with a band clamp, comprising the V-band clamp of Figures 1 a to 1 d. In use, an operator can engage the bolt shank 17 with the fastening nut 47 without having to fixate the fastening nut 47 in place relative to the bolt shank 17.
  • the fastening nut 47 enables one handed operation, and specifically one handed tightening and/or loosening of the band clamp.
  • the alignment hole 37 forms a filleted edge with the first side wall 27. The filleted edge helps to guide the bolt shank 17 through the first end flange 9 for engagement with the engagement means. This is particularly beneficial when working in confined spaces where the operator does not have a direct line of sight of the fastening device, and passing the bolt shank 17 through the end flanges of the fastening device and the first and second sidewalls 27, 29 of the fastening nut 21 , 47 can prove particularly difficult.
  • the alignment hole 37 also provides support to resist rotation of the nut 21 , 47 in reaction to contact of the spacing wall 35 with, for example, any one of the first end flange 9, the first band end 1 1 , or the first rib 3. It is also to be appreciated that in use the first face 31 of the fastening nut 21 , 47 abuts with the first end flange 9 as the bolt shank 17 is pressed into the second engagement means 39, thereby restricting displacement of the fastening nut 21 , 47 relative to the bolt 19, in a direction along the length of the bolt 19. This improves engagement of the bolt shank 17 with the second engagement means 39.
  • the fastening nut is manufactured from a single sheet of material, which material is metal.
  • the fastening nut 21 of Figures 2a to 2d is fashioned from a single sheet of metallic material. This comprises printing an outline of the fastening nut 21 on the metallic sheet. Fold lines are scored on the outline, indicating where the sheet is folded in order to obtain the fastening nut configuration illustrated in Figures 2a to 2d.
  • the threaded cylinder 41 is pressed out of the metallic sheet or is welded to the second side wall 29, in order to provide a robust engagement means for the bolt shank 17.
  • the fastening nut can also be manufactured from other materials, and such alternative materials fall within the scope of the present invention.
  • fastening nuts of the present invention have been described for use with band clamps, and in particular V-band clamps. However, it is to be appreciated that the fastening nuts of the present invention could also be used with other types of fastening device where one- handed engagement of the bolt shank with the fastening nut is required, and such alternatives fall within the scope of the present invention.
  • the improved fastening device of the present invention is particularly suited for use in joining tubular shaped objects, such as exhaust system components together.
  • the fastening device of the present invention is suited for use in joining a turbo charger to an exhaust system, as illustrated in Figure 4.
  • Figure 4 is a cut-away side view illustration of an exhaust 50 joined to a turbo charger 52 comprised in a vehicle 54 illustrated in Figure 5.
  • the turbo charger 52 comprises a flanged lip 56 arranged for engagement with a flanged end 58 of the exhaust 50.
  • the flanged end 58 of the exhaust and the flanged lip 56 of the turbo charger 52 are complimentary in shape, enabling them to be brought into abutting relation as illustrated.
  • the point of contact between the flanged end 58 of the exhaust 50 and the flanged lip 56 of the turbo charger 52 defines a contact surface 60. In order to maintain the contact surface 60 (i.e.
  • the fastening device 1 of the present invention is fastened around both the flanged end 58 of the exhaust 50 and the flanged lip 56 of the turbo charger 52.
  • the fastening device is configured with a band having a V- or U-shaped cross-sectional profile as illustrated in Figure 4. In use, the band is placed over both the flanged lip 56 of the turbo charger 52 and the flanged end 58 of the exhaust.
  • the fastening device 1 is tightened as described previously, in order to hold both the flanged lip 56 and the flanged end 58 together, and to ensure that a hermetic seal is generated to prevent the excretion of exhaust gases flowing between the turbo charger 52 and the exhaust 50.
  • FIG 5 is a perspective illustration of a vehicle 54 comprising the fastening device 1 of Figure 1 .
  • the fastening device 1 may be used to join a turbo charger 52 together with an exhaust 50 as illustrated in Figure 4. Further aspects and features of the invention are set out in the below clauses:
  • a fastening device comprising a band clamp, a fastening bolt and a fastening nut
  • the band clamp comprising a band configured with first and second end flanges extending outward from respectively first and second ends of the band
  • the fastening bolt comprising a shank provided with a first engagement member, the first and second end flanges being arranged in confronting relation and being arranged to be drawn together via the fastening bolt in order to bring the first and second band ends together for tightening the clamp
  • the fastening nut comprising:
  • first side wall comprising a first face, the first side wall having an alignment hole for guiding the shank of the fastening bolt through the first side wall;
  • a second side wall comprising a second face having a second engagement member aligned with the alignment hole of the first side wall and arranged to engage the first engagement member of the shank of the fastening bolt, the first and second faces being arranged in spaced, opposing relation and being joined together by a spacing wall extending between the first and second faces;
  • the first side wall, the second side wall and the spacing wall define a volume arranged to receive the first end flange of the band clamp between the first and second faces, such that in use as the shank is guided through the alignment hole and the first end flange, the first face abuts with the first end flange to restrict displacement of the nut relative to the fastening bolt in a direction parallel to a length of the shank to facilitate engagement of the first engagement member of the shank with the second engagement member of the fastening nut.
  • the fastening nut comprises a rotation arresting member extending between the first and second faces, and arranged in use to abut with the band when rotated relative to the band clamp, such that in use as the first engagement member of the shank engages with the second engagement member of the fastening nut, the fastening nut is rotatable until the rotating arresting member abuts with the band clamp thereby restricting rotation of the fastening nut relative to the fastening bolt.
  • the fastening nut comprises at least one edge wall extending between the first and second faces; the edge wall is configured as the rotation arresting member; and the first side wall, the second side wall, the at least one edge wall and the spacing wall of the fastening nut are formed from a single sheet of material.
  • a fastening nut for use with the fastening device of clause 1 15.
  • a vehicle comprising a turbocharger and an exhaust system, the turbocharger being connected to the exhaust system via a fastening device, the fastening device comprising a band clamp, a fastening bolt and a fastening nut, the band clamp comprising a band configured with first and second end flanges extending outward from respectively first and second ends of the band, the fastening bolt comprising a shank provided with a first engagement member, the first and second end flanges being arranged in confronting relation and being arranged to be drawn together via the fastening bolt in order to bring the first and second band ends together for tightening the clamp, the fastening nut comprising:
  • first side wall comprising a first face, the first side wall having an alignment hole for guiding the shank of the fastening bolt through the first side wall;
  • a second side wall comprising a second face having a second engagement member aligned with the alignment hole of the first side wall and arranged to engage the first engagement member of the shank of the fastening bolt, the first and second faces being arranged in spaced, opposing relation and being joined together by a spacing wall extending between the first and second faces;
  • the first side wall, the second side wall and the spacing wall define a volume arranged to receive the first end flange of the band clamp between the first and second faces, such that in use as the shank is guided through the alignment hole and the first end flange, the first face abuts with the first end flange to restrict displacement of the nut relative to the fastening bolt in a direction parallel to a length of the shank to facilitate engagement of the first engagement member of the shank with the second engagement member of the fastening nut.
  • the fastening nut comprises a rotation arresting member extending between the first and second faces, and arranged in use to abut with the band when rotated relative to the band clamp, such that in use as the first engagement member of the shank engages with the second engagement member of the fastening nut, the fastening nut is rotatable until the rotating arresting member abuts with the band clamp thereby restricting rotation of the fastening nut relative to the fastening bolt.
  • the spacing wall of the fastening nut is configured as the rotation arresting member.
  • the fastening nut comprises at least one edge wall extending between the first and second faces, and wherein the edge wall is configured as the rotation arresting member.
  • first side wall, the second side wall and the spacing wall of the fastening nut are formed from a single sheet of material.
  • the fastening nut comprises at least one edge wall extending between the first and second faces; the edge wall is configured as the rotation arresting member; and the first side wall, the second side wall, the at least one edge wall and the spacing wall of the fastening nut are formed from a single sheet of material.
  • the material comprises a metal.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne un dispositif de fixation comprenant un collier de serrage un boulon de fixation (19) et un écrou de fixation (21, 47). Le collier de serrage comprend une bande pourvue de première et seconde brides d'extrémité (9, 13) s'étendant vers l'extérieur à partir respectivement des première et seconde extrémités (11, 15) de ladite bande. Le boulon (19) comprend une tige filetée (17). Les brides (9, 13) peuvent être réunies au moyen du boulon (19) de manière à serrer le collier de serrage. L'écrou (21, 47) comprend : une première paroi latérale (27) comprenant une première face (31) et un trou d'alignement (37) pour guider la tige (17) dans la première paroi latérale (27) ; une seconde paroi latérale (29, 49) comprenant une seconde face (33) pourvue d'un alésage fileté (39) aligné sur le trou (37) et agencé de façon à venir en prise avec la tige (17). Les faces (31, 33) sont disposées de façon espacée et opposée et sont réunies par une paroi d'espacement (35). La première paroi latérale (27), la seconde paroi latérale (29, 49) et la paroi d'espacement (35) définissent un volume (43) agencé pour recevoir la première bride d'extrémité (9) du collier de serrage entre les faces (31, 33), de sorte que, en utilisation, lorsque la tige (17) est guidée dans le trou (37) et dans la première bride d'extrémité (9), la première face (31) vient en butée contre la première bride d'extrémité (9) afin de limiter le déplacement de l'écrou (21, 47) par rapport au boulon (19) dans une direction parallèle à une longueur de la tige (17) pour faciliter l'engagement de la tige (17) dans l'alésage fileté (39).
PCT/EP2015/065591 2014-07-09 2015-07-08 Dispositif de fixation amélioré WO2016005442A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15735685.8A EP3167218A1 (fr) 2014-07-09 2015-07-08 Dispositif de fixation amélioré

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1412221.2 2014-07-09
GB1412221.2A GB2528094B (en) 2014-07-09 2014-07-09 Improved fastening device

Publications (1)

Publication Number Publication Date
WO2016005442A1 true WO2016005442A1 (fr) 2016-01-14

Family

ID=51410873

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/065591 WO2016005442A1 (fr) 2014-07-09 2015-07-08 Dispositif de fixation amélioré

Country Status (3)

Country Link
EP (1) EP3167218A1 (fr)
GB (1) GB2528094B (fr)
WO (1) WO2016005442A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110173415A (zh) * 2019-07-03 2019-08-27 广西玉柴机器股份有限公司 船用增压器压气机连接管
JP2020526695A (ja) * 2017-07-14 2020-08-31 アイ・エイチ・アイ チャージング システムズ インターナショナル ゲーエムベーハー 排気ガス過給機のための結合具及び排気ガス過給機
CN110173415B (zh) * 2019-07-03 2024-05-17 广西玉柴机器股份有限公司 船用增压器压气机连接管

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011463A1 (fr) * 2017-07-14 2019-01-17 Ihi Charging Systems International Gmbh Dispositif de liaison pour turbocompresseur et turbocompresseur

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EP1336763A2 (fr) * 2002-02-13 2003-08-20 Gobin Daude Dispositif de fixation à pince
FR2863335A1 (fr) * 2003-12-04 2005-06-10 Caillau Ets Collier de serrage
EP1840439A2 (fr) * 2006-03-30 2007-10-03 Teconnex Ltd. Dispositif de serrage
EP2098768A2 (fr) * 2008-03-06 2009-09-09 GIA S.p.A. Dispositif de verrouillage pour verrouiller les colliers de serrage de tube
DE202011000809U1 (de) * 2011-04-06 2011-06-09 Jiangmen Eurofix Metal and Rubber Products Co., Ltd., Guangdong Rohrschelle
EP2481939A1 (fr) * 2011-01-27 2012-08-01 NORMA Germany GmbH Elément de serrage

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CA2001088C (fr) * 1988-11-03 1995-05-16 Ramon Palau Dominguez Serre-cable avec vis de blocage
ES2233173B2 (es) * 2003-04-10 2007-02-01 Mikalor, S.A. Abrazadera perfilada.
DE102008036386B4 (de) * 2008-08-05 2012-03-15 Sina Befestigungssysteme Gmbh Rohrschelle und Profilelement für eine Rohrschelle

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Publication number Priority date Publication date Assignee Title
EP1336763A2 (fr) * 2002-02-13 2003-08-20 Gobin Daude Dispositif de fixation à pince
FR2863335A1 (fr) * 2003-12-04 2005-06-10 Caillau Ets Collier de serrage
EP1840439A2 (fr) * 2006-03-30 2007-10-03 Teconnex Ltd. Dispositif de serrage
EP2098768A2 (fr) * 2008-03-06 2009-09-09 GIA S.p.A. Dispositif de verrouillage pour verrouiller les colliers de serrage de tube
EP2481939A1 (fr) * 2011-01-27 2012-08-01 NORMA Germany GmbH Elément de serrage
DE202011000809U1 (de) * 2011-04-06 2011-06-09 Jiangmen Eurofix Metal and Rubber Products Co., Ltd., Guangdong Rohrschelle

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020526695A (ja) * 2017-07-14 2020-08-31 アイ・エイチ・アイ チャージング システムズ インターナショナル ゲーエムベーハー 排気ガス過給機のための結合具及び排気ガス過給機
JP7139354B2 (ja) 2017-07-14 2022-09-20 アイ・エイチ・アイ チャージング システムズ インターナショナル ゲーエムベーハー 排気ガス過給機のための結合具及び排気ガス過給機
CN110173415A (zh) * 2019-07-03 2019-08-27 广西玉柴机器股份有限公司 船用增压器压气机连接管
CN110173415B (zh) * 2019-07-03 2024-05-17 广西玉柴机器股份有限公司 船用增压器压气机连接管

Also Published As

Publication number Publication date
GB201412221D0 (en) 2014-08-20
GB2528094B (en) 2017-04-26
EP3167218A1 (fr) 2017-05-17
GB2528094A (en) 2016-01-13

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