Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
  • H02G3/0462—Tubings, i.e. having a closed section
  • H02G3/0468—Corrugated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
  • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
  • B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/32—Component parts, details or accessories; Auxiliary operations
  • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
  • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
  • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/32—Component parts, details or accessories; Auxiliary operations
  • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
  • B29C2043/3602—Moulds for making articles of definite length, i.e. discrete articles with means for positioning, fastening or clamping the material to be formed or preforms inside the mould
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
  • B29K2101/12—Thermoplastic materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/25—Solid
  • B29K2105/253—Preform
  • B29K2105/258—Tubular
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2023/00—Tubular articles
  • B29L2023/18—Pleated or corrugated hoses

Definitions

• the invention relates to a corrugated tubular sheath having an internal clamping means, in particular for clamping a tube located inside the sheath.
• the invention also relates to a method of manufacturing such a sheath, and to a method of maintaining a tubular sheath annealed on a tube.
• EP 952 652 relates to a ring-shaped tubular sleeve in the shape of a heart intended to contain cables.
• the international application published under the number WO 2005/117222 relates to a conductor guide device composed of flexible corrugations, interconnected axially.
• the flexible corrugations are reinforced by stiffening bars arranged between them, each stiffening bar being in the hollow formed on the outside, between the vertices of two adjacent corrugations.
• French Patent Application No. 2 935 556 relates to an annular tubular sleeve sealed by a sealing means.
• the major object of the invention is to be able to use a tubular sleeve annealed with a tube, in particular a smooth tube, by making an easy assembly of the tube and the sheath, and then a firm hold of the sheath on the tube.
• this object is achieved by means of a corrugated tubular sheath comprising at least one internal clamping means intended in particular to firmly hold the sheath in place on the tube introduced into the sheath, by tightening this tube, this sheath having this particular that at least one flexible zone is associated with the inner clamping means.
• the invention also relates to a method for making such an annular tubular sheath, and to a method of holding a tubular sheath annealed on a tube.
• FIG. 1 a conventional annular tubular sheath in longitudinal section
• FIG. 4 a tubular sheath according to the invention, in side view
• FIG. 5 a tubular sheath according to the invention containing a smooth tube, in section;
• ring a hollow cylinder section, circular or not
• annular tubular sheath a plurality of inner ring / outer ring couples extending along a longitudinal axis and connected by substantially radial walls, that is to say substantially perpendicular to the longitudinal axis of the sheath.
• FIG. 1 A substantially cylindrical corrugated tubular sheath of conventional type is shown in FIG. 1 where it can be seen that each outer ring 2 is connected to an inner ring 1 by two walls 3,4 inclined with respect to a plane perpendicular to the axis longitudinal X, two adjacent inclined walls 3,4 having opposite inclinations.
• the walls 3,4 are more "radial" in that they are more perpendicular to the longitudinal axis X of the sheath.
• a corrugation is defined as consisting of an outer ring 2 and two radial walls 3,4 to which this outer ring 2 is connected.
• each annulus 2,3,4 is thus connected to that which precedes or follows it by an inner ring 1 as defined above.
• FIG. 2 represents a corrugated tubular sheath according to the invention.
• the tubular sheath comprises an internal clamping means 5.
• this inner clamping means 5 is constituted by a portion of an inner ring 1 forming or having a protuberance or lug protruding inwardly of the sheath.
• This projection may have a substantially truncopyramidal shape comprising a top 5a, two lateral sides 5b which can be radial and two longitudinal sides 5c (visible in Figure 3).
• the top 5a may form an arc of a circle in a plane perpendicular to the longitudinal axis X of the sheath, the center of this arc may then be the projection of the axis X on said perpendicular plane.
• the clamping means 5 may be formed by displacement of material, for example during the molding of the sheath, and its againstform thus appears outside the sheath as a hollow 7.
• the depth (or in the case of variability, the average depth) p of the lug or protuberance 5, measured from the inner wall of the inner ring 1 which carries it, can represent between 0% and 100% of the difference d between the distance RI (see FIG. 1) between the outer ring 2 and the axis X and the distance R2 between the inner ring 1 and the axis X, these distances being measured from the inner walls of the rings 1,2 and being spokes if the sheath is circular.
• the depth p is between 30 and 70% of the difference, more preferably still, it is equal to about 50% of the difference d.
• the angle (or in case of variability, the average angle) formed between the lines connecting the lateral sides 5c of the lug 5 to the longitudinal axis X in a plane perpendicular to this longitudinal axis X is in general 10 at 90 degrees, preferably between 40 to 60 degrees and commonly about 45 degrees (as is the case in Figure 3).
• the protuberance 5 has a thickness e which can be seen in FIG. 2, that is to say a length along the axis X, which may be equal to that of the inner ring 1 concerned or less than -this.
• the annular tubular sleeve according to the invention comprises two clamping means 5, preferably identical and preferably located face to face, that is to say symmetrically opposed with respect to the longitudinal axis X.
• FIG. 4 shows another advantageous embodiment in which at least one flexible zone 8 is formed in correspondence with the internal means (s) 5 for clamping (of which the counterform 7 is seen on FIG. 4), so as to allow a point deformation of the sheath, this deformation making it possible to reduce or annihilate the clamping exerted by the internal clamping means (s) 5.
• the inner clamping means 5 blocks the tube 11 and thus prevents any longitudinal translation inside the sheath. Thanks to the cooperation of the flexible zone 8 with the clamping means 5 with which it is associated, when the user compresses, in particular between his fingers, the sheath along the arrows F and F ', the sheath assumes a substantially oblong shape which distances the means (s) 5 clamping the outer wall of the tube 11 and thus releases it.
• each associated flexible zone 8 it is desirable for each associated flexible zone 8 to be equidistant between the two inner clamping means 5.
• each flexible zone 8 may consist of a bridge of material 9 axially connecting two outer rings 2 and itself connected by two lateral flanges 10 to the inner ring 1 comprising the (S) internal medium (s) clamping 5, the inner ring 1 then being preferably interrupted between the two side chips 10.
• the lateral flanges 10 have a preferred conformation, in that they are inclined in opposite directions with respect to each other, because this configuration facilitates demolding of the sheath and its deformation, but one could predict that they are parallel.
• the length of the material bridge 9 is equal to the longitudinal distance between the two outer rings 2 connected.
• the width i (see Fig. 3) of the material bridge 9 is its perimeter in a plane perpendicular to the longitudinal axis X.
• the straight lines connecting the two lateral ends of the material bridge 9 to the axis longitudinal X may form an angle ⁇ preferably between 5 and 20 degrees and is in particular about 10 degrees.
• the length of the lateral flanges 10 is equal to that of the material bridge 9 at the level of the outer rings 2 and, in the case where the walls 3 between the rings 1 and 2 are inclined, this length decreases to become equal to the length of the inner rings 1.
• the width of the lateral flanges 10, that is to say the distance between where they meet the material bridge 9, that is to say the lateral end el, and the place e2 where they reach the inner ring 1 is a function of their inclination, which is symbolized by an angle ⁇ (visible in FIG 3) defined between a first straight line connecting el and the projection of the longitudinal axis X on a plane perpendicular to this axis and a second straight connecting el and e2.
• This angle ⁇ can be for example 20 to 40 degrees.
• the dimensioning of the flexible zone or zones 8 is chosen as a function of the deformability that it is desired to confer on the annular tubular sheath.
• the annular tubular sleeve according to the invention can therefore firmly hold a smooth tube 11.
• it acts on the flexible zone (s) 8 to deform the sheath, then the tube is introduced. 11 in the sheath and then relaxes the zone (s) flexible (s) 8 so that the smooth tube 11 is maintained by the (s) means (s) clamping 5.
• the firmness of maintaining the smooth tube 11 is then determined in particular by the lug 5, in particular by its depth p, by the shape of the top 5a and by the angle a.
• the inner means (s) clamping (s) clamp (s) the tube inside the sheath that is to say it (s) exert (s) somehow on him a pressure towards the center of the sheath.
• the corrugated tubular sheath according to the invention may be of any known type, in particular, in one piece and closing on itself to enclose a smooth tube, of the type consisting of two shells fitting one into the other. other, from heart-shaped type or type consisting of two shells connected by a hinge so that one of the shells can cover the other to close the sheath.
• the tubular sheath according to the invention is not split or open longitudinally (axially), it therefore normally has only two openings at its axial ends.
• the introduction of the tube 11 into the sheath can therefore be done by one or other of these axial ends.
• the annular tubular sleeve according to the invention is generally essentially made of one or more polymeric materials, preferably thermoplastics.
• the invention applies to the maintenance of a corrugated tubular sheath on a smooth tube but, of course, it is also suitable for maintaining an annular tubular sheath on a tube which is not completely smooth or has a certain roughness or irregularities of surface, even moderate or punctual variations of diameter.
• Its manufacturing process may be a conventional method adapted to the invention, namely, a method in which a mold having one or more counterforms corresponding to the inner means (s) of clamping 5,6 and, where appropriate, one or more counter-form (s) corresponding to the flexible zone (s) 8.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Supports For Pipes And Cables (AREA)
• Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
• Details Of Indoor Wiring (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50483101

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Citations (1)

Family Cites Families (15)

• 2014
  • 2014-02-06 FR FR1400337A patent/FR3017178B1/fr not_active Expired - Fee Related
• 2015
  • 2015-02-06 EP EP15708268.6A patent/EP3103174A1/de not_active Withdrawn
  • 2015-02-06 WO PCT/IB2015/000117 patent/WO2015118401A1/fr active Application Filing
  • 2015-02-06 US US15/116,396 patent/US20170012418A1/en not_active Abandoned
  • 2015-02-06 CN CN201580007737.9A patent/CN105981247A/zh active Pending
  • 2015-02-06 JP JP2016568147A patent/JP2017513451A/ja active Pending

Patent Citations (1)

Non-Patent Citations (1)

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