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
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/02—Energy absorbers; Noise absorbers
  • F16L55/033—Noise absorbers
  • F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
• • 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
  • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
  • F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
  • F16L3/04—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing and pressing it against a wall or other support

Definitions

• the invention relates to a device for fixing a tube to a support, in particular a fluid transfer tube in an engine compartment or underbody of a motor vehicle, by means of a part mounted around the tube and a mounting lug for this part on a support.
• Fluid transfer tubes which are intended to be mounted in an engine compartment or underbody of a motor vehicle, such as tubes for power steering circuits, braking, air conditioning, cooling, fuel supply, etc ... are mostly fixed on supports at a point along their length by means of devices allowing not only to hold and immobilize the tubes, but also to ensure their orientation in a predetermined angular position around their axis. It has been proposed to use for this purpose fixing lugs which are welded to the tubes at one of their ends and fixed to a support by screwing, for example at their other end, but the welding (or brazing) operations tabs on the tubes are expensive and can lead to drilling the tubes.
• the invention relates to a tube fixing device which meets these needs without having the drawbacks of the aforementioned means of the prior art.
• a device for fixing a tube to a support in particular a fluid transfer tube for a motor vehicle, comprising a part mounted around the tube and a lug for fixing this part to a support, characterized in that said part has a U-shaped cross-section, in that a rubber or other elastically deformable material lining is interposed between the U-shaped part and the tube and in that the U-shaped part is tightened around the tube by the fixing lug by compressing the gasket on the tube.
• the aforementioned U-shaped part is mounted on the fixing lug by clipping or elastic snap-fastening and comprises at least one end engaged and retained by elasticity in an orifice of the fixing lug.
• the aforementioned packing is overmolded on a metal frame or plastic and also forms at least a portion of the outer surface of the U-shaped part. handling, reduced the number of parts, facilitates assembly, etc. and the U-shaped part covered by the rubber lining or the like can be brought into contact with another element inside the engine compartment without generating noise, shock or vibrations.
• FIG. 1 is a schematic cross-sectional view of a device according to the invention before it is mounted on a fluid transfer tube;
• FIG. 1 is a side view of the U-shaped part of this device
• FIG. 3 is a schematic cross-sectional view showing the device mounted on a tube and on a support.
• the device according to the invention is intended to fix a fluid transfer tube 10 on a support 12, for example in an engine compartment of a motor vehicle, and comprises a U-shaped part 14 mounted around the tube 10 and a rigid tab 16 (preferably metallic and advantageously made of aluminum) for fixing the part 14 to the support 12 by means of a bolt 18, of a screw-nut system or similar.
• the tube 10 can be metallic or rigid with a multilayer or composite structure and is part of a fluid circuit in which noise, vibrations, etc. are liable to be generated.
• the U-shaped part 14 comprises a frame 20 made of relatively rigid material, for example metal or plastic, covered at least partially with a lining 22 of rubber or of another elastically deformable material interposed between the frame 20 and the tube 10 to prevent the transmission of noise and vibrations between the tube 10 and the support 12.
• the liner 22 is overmolded on the frame 20 which has from place to place orifices 24 allowing better anchoring of the frame 20 in the liner 22, the latter covering at least a portion of the outer surface of the armature 20 to absorb shock and vibration on contact with other objects in the immediate vicinity of the U-shaped part 14.
• the two ends 26 of the frame 20 are folded outwards and form lateral edges for snap-fastening or snap-fastening in orifices 28 in the plate 16.
• the lateral edges of the ends 26 of the frame 20 form convergent inclined ramps on which the edges of the orifices 28 of the tab can slide.
• the U-shaped part 14 has an internal diameter (diameter of the lining 22) slightly greater than the outside diameter of the tube 10 and the distance between the edges of the ends 26 of the frame 20 is slightly greater than the distance D between the opposite edges of the orifices 28 of the tab 16 so that, when the U-shaped part 14 is mounted on the lug 16 as shown in FIG. 3, the lining 22 is elastically compressed on the tube 10 and between this tube and the lug 16 by the ends of the frame 20 which have been brought together and which are resting on the edges of the orifices 28.
• the U-shaped part 14 can be placed around the tube 10 as shown in FIG. 1, then tighten the U-shaped part 14 by hand or with pliers on the tube 10, bring the tab 16 with its orifices 28 opposite the ends of the frame 20 and engage these ends in the orifices 28 until snap-fastening or snap-fastening, the tab 16 is then applied to the lining 22.
• the hardness of the rubber or of the elastomer of the lining 22 and its tightening on the tube 10 and on the tab 16 are determined as a function of the noises and vibrations which are generated in the tube 10 and which must be prevented from being transmitted to the support. 12.
• the U-shaped part 14 could be replaced by a split ring of rubber or elastomer which would be placed on the tube 10 and on which one would come arrange the frame 20.
• the means for clipping or elastic snap-fitting of the armature 20 onto the tab 16 may also be different from those shown: for example, the tab 16 could comprise a single orifice 28 whose dimension in the plane of the drawing would be distance D shown in FIG. 1. Furthermore, the ends of the frame 20 could have different shapes, one comprising for example an L-shaped flange which would be applied to the upper face of the tab 16 and the other having the shape shown in the drawing for fixing the part 14 to the lug 16 by clipping or elastic snap-fastening.
• ends of the frame 20 could also be formed with L-shaped flanges facing outwards, which would engage on the edges of the orifices 28 or hang on tabs formed by punctures of paw 16.
• the device which has been described and shown in the drawing is obviously removable, by bringing the ends 26 of the frame 20 together and passing these ends through the orifices 28 in the tab 16.
• This device can also be made non-removable, for example by crushing or flattening the ends 26 inward or outward.
• the invention relates in particular to the fixing of the fluid transfer tubes in an engine compartment or on an underbody of a motor vehicle, but is generally applicable to the fixing of tubes, pipes and conduits of all types on supports.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Supports For Pipes And Cables (AREA)
• Motor Or Generator Frames (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9525765

Family Applications (1)

Country Status (5)

Families Citing this family (8)

Family Cites Families (7)

• 1998
  • 1998-04-28 FR FR9805325A patent/FR2777968B1/fr not_active Expired - Lifetime
• 1999
  • 1999-04-27 BR BR9906381-6A patent/BR9906381A/pt not_active Application Discontinuation
  • 1999-04-27 WO PCT/FR1999/000993 patent/WO1999056051A1/fr not_active Ceased
  • 1999-04-27 EP EP99915845A patent/EP0990102A1/de not_active Withdrawn
  • 1999-04-28 AR ARP990101984 patent/AR019117A1/es unknown

Non-Patent Citations (1)

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