FR2623666A1 - DEVICE FOR SHUTTING AND SEALING THE FREE END OF A CABLE GUIDE TUBE - Google Patents

Abstract

Device intended for plugging and sealing the free end of a cable guide tube both empty and in a position occupied by a cable with parts enveloping the outside and frontally the cable guide tube and a closing seal as well as an annular seal placed around the cable occupying the tube, making it possible to make adaptations to existing systems while maintaining good sealing properties. This object is achieved by means of the device consisting of a divided, essentially cylindrical housing, externally enveloping the parts of the free end of the cable guide tube 15 with a front closing wall removable at least in sections and an internal sealing material. 12.

Description

!

  DEVICE FOR SHUTTERING AND SEALING

  FROM THE FREE END OF A CABLE GUIDE TUBE

  The invention relates to a device for closing and sealing the free end of a cable guide tube, both when empty and when it is

  occupied by a cable, with outer enveloping parts

  and frontally the tube and with a seal

  closing tee and an annular seal placed

  externally around the cable housed in the tube.

  This type of device is for example known by the Utility Model DE-83 34 765. In this one, it is

  describes a sheath that can slip on the free end.

  of a cable guide tube and incorporating

  a sealing washer, the fixing in position

  of the sealing washer taking place by means of

an external threaded ring.

  The published patent application DE-35 32 118 shows

  another solution which serves in particular to prepare a

  seems of retractable hoses for the occupying position.

  subsequently allowing the retractable pipe section to be fitted onto the cable casing passed through the tube. In an exemplary embodiment shown in this publication, the cap of the closure cap, which

  cap is held by sections of retractable hose

  ble, can be removed by means of points intended for

  breakthrough then allowing the cable

  respondent in the cable guide tube.

  The disadvantage of the known solutions lies in the impossibility of proceeding with additions to already existing systems since the devices

  mentioned above can not be mounted on guide tubes

  of existing cables and / or cables through them.

health.

  The object of the invention is to provide a solution

  thanks to which good

  sealing properties while permitting

  on existing systems.

  The object of the invention is achieved for a

  type referred to above, in that this

  tif is formed by a housing divided or compartmentalized, essentially cylindrical, enveloping externally

  zones of the free end of the guide tube of

  with a front closure wall, which may be split at least in sections and

internal sealing.

  Thanks to the divided or compartmentalized housing, the device can unfold to enclose and seal the corresponding cable guide tube so that this tube is closed frontally and comprises at the same time

  in the end zone a sufficient quantity of

  sealing material. This sealing material is then available at the time of introduction of a cable into

the tube.

  From the point of view of design, the wall of ob-

  frontal tiling according to the invention consists of

  divided, arranged concentrically between them, the inner ring provided with a pin penetrating into the mass

  seal housed inside the device. We ob-

  thus holds an optimal reservoir for the mass of water

  it can be easily manipulated given

  that, depending on its properties, this material is

  on the inner pin in the manner of a kind of

plug.

  Another design provides that the pin

  The upper part completely traverses the sealing mass, this being feasible because depending on the size of the inner pin, the passage for the cable to be introduced is already substantially created during the extraction of the pin. To meet a variety of cable diameters to be introduced, the invention also provides for the sealing mass to be placed in several layers inside the device, the different layers being separated from each other by insulating elements, such as

  silicone paper or similar material.

  The invention also contemplates arranging in the

  inner part at the level of the sealing face

  of the sealing material, a stop for the front part of the cable guide tube, a particular design that the sealing compound

  protrudes from or beyond the heel area or between

  stop gauge of a certain height in the direction of the free end to recess of the guide tube of

cables.

  Thanks to this design, it is possible by mounting the device on the free end of the cable guide tube, to spread a portion of the sealing mass outwardly around the cable guide pipe in order to dispose of also at this location a

  sufficient amount of sealing material.

  The invention also provides for providing

  of the inner surface of the divided or com-

  provided with fastening means and / or spikes for attachment to the outer surface of the guide tube

  of cables. It should be noted here that the Model of Use

  DE-83 34 765 cited at the beginning also has friction-enhancing means, in particular

recessed cleats.

  The invention further provides to provide disks

  divided rings of fixing means and / or crem-

  for contacting the outer surface of the cables. These fastening means or crampons can

  serve on the one hand to keep the discs one on the

  be in the closed position and they serve on the other hand as fastening means and crampons in the

  occupancy position in addition to their additional function

seal.

  The invention also provides for the provision of

  sealing rings of a relatively wide slot

  both during compression and closure of the device to exert radial elastic movement in the direction to grip the outer surface of the device.

cable passed in the tube.

  Finally, the invention further provides that the division of the housing of the device is performed by means of a hinge or the like, the fixing in the opposite zone of division being effected by means of

  wedge-shaped surfaces and clamps.

  In a particular design, it is planned

  to form the closure wall by a spiral in

synthetic material.

  It has been found that a spiral in synthetic

  tick is not only very simple to manufacture, but

  can also in practice be very easily trans-

  formed because when it comes to introducing a

  cable, it can wind up in the direction of opening

  ture, be guided around the introduced cable and be

  following sectioned by the cableur or fitter depending on the thickness required. In this way. a spiral of this type can at any time be adapted to the external diameters required of the cables to be introduced. A plastic spiral is also easy to manufacture, for example by extruding a strip, which is then wound in sections to form a spiral and then subjected to a short-term heat treatment, in a heating furnace, in a water bath or similar,

  to obtain a permanent spiral shape.

  In a further embodiment, the invention provides for equipping the spirals at the level of

  their outer or inner faces of means of

  rage and / or cleats for attachment to the outer surface of the ropes and / or the inner surface of the

  divided or compartmentalized dwelling. These means of hanging

  ge or crampons are on the one hand constituted by a throat

  continuous V-shaped and on the inner surface cor-

  respective responder by V-shaped molding. These moldings are not necessarily continuous since it is sufficient to provide them in sections, although

  for the extrusion production of spirals the

  One-piece moldings are suitable.

  Another type of abutment inside semi-

  hulls for limiting the insertion depth of a cable guide tube consists of arranging to

  the inside of the cams instead of the buoy

  periphery. These types of cams allow the exchange of sealing material from one area to another area, the abutment shoulders in one piece

which can constitute an obstacle here.

  In the measurement o at the stop cams in the direction of the cable guide tube, it is

  a reception groove for additional material

  In this case, it is important to ensure that there is adequate sealing in each case. The compression cams, during compression, melt the sealing material of the main sealing body with the sealing material in the annular groove, thereby ensuring that the device

  itself is sealed against the outer surface

  cable guide tubes.

  The invention also provides for filling before assembly, the different areas of the semi-shells of

  housing a quantity- of sealing material of

  that the level of the separating gasket protrudes to form an excess of the sealing compound. In other words, in the area of the sealing material

  The main semi-shells are more strongly

  folded that this is necessary for their joining, this

  so that the excess quantity of

  the disease is distributed and compressed in the zones of

  separation to ensure optimal sealing.

  An additional variant of the mode of

  Another object of the invention is to equip the housing of the device or each half-shell of the housing, on

  the input side of cables, appendages for the discharge

  in traction, whereby in another embodiment, resilient appendages can be provided which can be engaged by pressure and on the envelope of the

cable via a pressure element.

  Thus, it will be possible for example via a clamp or a similar element to clamp the appendages arranged on the elements of the device on the surface of the cable to thereby achieve a discharge in

  optimal traction. In addition, the invention also provides

  inside the device a set of lodgings

  filled with a sealing gel, sealing gel here meaning any plastic sealing material. AT

  In this respect, it is also planned that the whole of

  ments for the sealing material-has a bottom in which a slot is made

  passage of cables of different diameters.

  To allow the passage of cables of different diameters, the invention also provides to provide the front wall of prematriated grooves device to facilitate handling also for the fitter

  responsible for the establishment or addition of the

  operative part. One embodiment provides that each housing half-shell is connected by thin hinge joints to the other half-shell as has already been described in more detail above. An execution

  alternatively, to provide each semi-hull with

  to form a hinge joint.

  The invention will now be described in greater detail.

  tail using the example design, in which. FIG. 1 is a simplified spatial representation of the device:

  - Figure 2 is a section along the line II-

  II of Figure 1: - Figure 3 is the same representation in

  cut with the inserted free end of a guide tube

  age of cables as well; - Figure 4 which is the same representation in section with an additional cable introduced; FIG. 5 shows an alternative embodiment of the invention; - Figures 6 to 8 are sectional representations along the lines VI-VIII of Figure 5;

  - Figure 9 shows a spiral wound by

on a cable;

  - Figure 10 shows a coiled spiral

  on a cable; - Figure 11 is a sectional representation of a further embodiment of the invention; - Figure 12 is a section along the arrow XII-XII of Figure 11 as well; FIG. 13 is a projection, according to the

  arrow XIII of figure 11. of a half-shell of the box-

  is lying. The device generally designated by the

  reference numeral 1 consists of a housing 2 essen-

  substantially cylindrical composed of a semi-shell 2a and a semi-shell 2b which are interconnected by a hinge hinge 3. On the free end opposite the hinge joint, each housing semicoque 2a and 2b comprises dovetail-shaped ridges 4 on which a clamping bar S is inserted and which are clamped one on top of one another.

  depending on the depth of penetration.

  The front part 6 of the device 1 has several rings assembled concentrically on one another on a central inner pin 8. The rings 7 are of split design and have a certain

  extent of crack in their separation zone to permeate

  put a radial clamping. At the same time, they are

  with inward or inwardly directed projections

  correspondingly in such a way that the projections 9 in the occupying position can come into contact

  with the surface of the cable, designated by the numerical

10 in Figure 4.

  The inner pin 8 is provided with a pin 11 which penetrates inside the device 1 and which is surrounded by a mass or sealing material 12. On the inner surface the two halves of the device 2a and 2b are provided with series of sealing spacers 13 and a stop spacer 14 for a guide tube of

  embedded cables, as shown in FIG.

re 3.

  As can be seen in Figure 2, the material

  sealing member 12 substantially extends over a portion of the abutment spacer 14 such that upon insertion of the cable guide tube 15, the slot 16 between the outer surface of the cable guide tube into the front and the inner surface of the device 1 is still filled with sealing material. When a cable 10 is inserted, the device 1 can then be completely removed by detaching the clip and opening the two semi-shells of the device. After the passage of the cable, in addition to the inner pin 8 is removed the necessary amount of rings 7 corresponding to the diameter of the cable introduced. Then, the device is placed again around the cable 10 and the tube of

  guiding cables 15 and closing. The elements of

  their respective cheetours are then compressed around the

  enveloping elements as shown in FIG. 4. In the exemplary embodiments shown in FIGS. 5 to 10, there is as far as possible

  chosen the same references as in the description below.

  above which may have been supplemented by letters

very Latin corresponding.

  The device 1c shown in FIG. 5c is shown without sealing material and also without the

  spiral 7c which is reproduced in more detail on the

  FIGS. 9 and 10. Here, as is exactly the case with the exemplary embodiments according to the preceding figures, a cable guide tube 15c is introduced from the right up to the stop cams 14c. In the

  layer of use of the groove 16c is a material

  additional seal 18 (FIG. 8), while in each half-shell is a filling of sealing material 12c. When the empty tube 15 is introduced or when the open device is folded over the front part of a cable guide tube 15c of

  this type, the excess sealing material 12c is

  together with the sealing material 18 in such a way as to

  optimum sealing of the front part of the

  be guiding cables 15c. The area filled with sealing material 12c is indicated at the top

of Figure 5 by the letter x.

  Figures 6 to 8 also show that in the part of the upper edges 4c the halves of the device are slightly outwardly displaced by

  compared to the median plane and this to ensure penetration

  sealing material during clamping, the partial area of the corresponding sealing material being

  designated in Figure 8 by the reference 18c.

  To obtain compensation for different

  introduced cable diameters, not just in the middle

  corresponding length of the spirals 7c, the invention

  tion also envisages the possibility of

  strip of sealing material on each half of the disc

  positive: this strip of sealing material is shown in FIG. 7 and bears the reference 19. This strip of sealing material will be used in particular by the fitter in the case where the cables introduced are

very fine.

  In the use layer, the spiral 7c for frontal sealing is unwound for example for a cable 10c, and then wound around the cable

  O10c within the limits necessary to ensure the

  These two situations are shown in Figures 9 and 10. For thin cables, the total length of the spiral is used: for larger diameter cables, wind up until the corresponding outer diameter is reached and the spiral is then cut with scissors or pliers. Here again, the sealing zones interlock with one another, substantially as shown

in Figure 2.

  Thanks to this clamping in the manner of crampons

  By means of corresponding cams 9c which are applied on the inside of the cable 10c and thanks to the corresponding grooves on the outer side, the front part of the device 1c is obtained with an optimum clamping between the cable on the one hand and the device lc else

  as well as between the cable guide tube 15c.

  this means that no traction is exerted

  on the sealing material itself. Indeed, the ef-

  tensile strengths are transmitted mechanically

  and the sealing material is not affected by them. This gives an optimal seal and a

  clamping the device 1c with the guide tube

  15c cables with a cable introduced lOc.

  Figures 11 to 13 reproduce an example of

  additional embodiment as an alternative of the invention.

  (In the text below all the elements in the

  they are consistent with the previous description,

  bear the same references, supplemented by the letter

tiny Nd ").

  The device represented in these figures and

  In general, the reference id consists of new

  veal in two semi-shells 2d essentially symmetrical, for example synthetic material. The particularity of these housing halves 2d lies in that compared to the example of the embodiment according to FIG. 5,

  they have appendages 17 on the front side 6d.

  These appendices 17 apply in the user layer

  at the outer surface of the cable 10

  troduced and not shown in more detail. They are for example compressed by a necklace 18 like this

  is suggested in Figure 11 by the arrow 19.

  In the inner part, each half of the

  2d includes both an area with

  its sealing 13d that recesses 19 which are replaced

  folds of resilient sealing material 20. The recesses

  ments 19, however, have a background whose configuration

  tion is reproduced in a simplified manner in Figure 12.

  By practicing corresponding slots 21 in the

  bottom, shaped faces 22 in the form of valves that can

  apply externally to the inserted cables.

  The front wall 6d opposite the bottom zone is provided with pre-marked grooves or grooves 23 so as to enable the assembler, with the aid of a cutting object, for example a knife, to cut out corresponding half-circles in order to create an orifice of

  adequate crossing for the cable to be introduced.

  On the lower side, each half-housing 2d has hinge joints 24 which are arranged offset in relation to each other in the use layer, so that they can be joined in a common hinge. On the side opposite the hinge joints 24, as is already the case in the other embodiments, edges 4d are provided by which the device can be clamped.

  tighten the corresponding cables.

Claims (18)

  1. A device for sealing and sealing the free end of a cable guide tube both when empty and when it is occupied by a cable with parts wrapped outside and   frontally the cable guide tube and a   sealingness and annular sealing   surrounding the cable occupying the tube   characterized in that the device (1) consists of a   substantially cylindrical, divided or   in the longitudinal direction, wrapping portions of the free end of the cable guide tube (15) externally with a closing wall (6) removable at least by truncation and with a   inner sealing material (12).   2. Device according to claim 1, characterized   in that the front closure wall (6) is   formed by rings (7) divided and arranged concentra-   between them, the inner ring (8) provided with   pin (11) penetrating into the sealing material   tee (12) disposed in the inner part of the device.   3. Device according to claim 2, characterized   in that the inner pin (11) passes through   the sealing material (12).   4. Device according to one of the claims   preceding, characterized in that the material of etan-   (12) is arranged in several layers in the   part of the device, the different layers   (12a, 12b) being separated from each other by iso-   lants (17) such as silicone paper or a similar element Milaire.   5. Device according to one of the claims   precedents, characterized in that in the   at the level of the free sealing surface of the sealing material (12) there is provided a stop (14) for the front part of the cable guide tube (15).   6. Device according to one of the claims   preceding, characterized in that the material of etan-   clearance (12) protrudes from the heel area or abutment spacer (14) by a certain height in the direction of the free-fitting end of the guide tube. (15).   7. Device according to one of the claims   characterized in that parts of the inner surface of the divided housing are provided with   clamping means and / or crampons (13) for the application   on the outer surface of the guide tube of (15).   8. Device according to one of the claims   previous, characterized in that the split rings (7) are provided with clamping means and / or cleats   (9) for application to the outer surface of (10).   9. Device according to one of the claims   previous ones, characterized in that the division of the   the device (2) is effected by a hinge joint (3) or the like, the attachment in the opposite zone of division being effected by means of   wedge shape (4) and clamps (5).   10. Device according to claim 1 or one   of the following claims, characterized in that the   partition wall (6c) is formed by a spiral in synthetic material (7c).   11. Device according to claim 10, characterized   tered in that the spiral (7c) is provided on its   outer or inner faces of clamping means and / or cleats (9c) for application to the surface   outside the cables (10c) and / or on the surface divided dwelling (2c).   Device according to claim 10 or 11,   characterized in that in the inner part of the   half-shells (2c), for the delimitation of the penetration depth of a cable guide tube (15c), are provided stop cams (14c).   13. Device according to one of the claims   precedents, characterized in that in the zone of   mes mes (14c) in the direction of the cable guide tube (15iSc) is provided a receiving groove (16c)   for an additional sealing material (18).   14. Device according to one of the claims   characterized in that prior to mounting, the housing halves (2c) are filled with a quantity of sealing material (12c)   a surplus exceeding the height of the separation seal.   15. Device according to one of the claims   preceding, characterized in that the housing of the   (1d) on the side of the cable entry (6d) is provided with appendages (17) for the voltage discharge, these appendages being designed elastically and can be   compressed by a compression element (18) on the enve- loppe of the cable (10).   16. Device according to one of the claims   precedents, characterized in that in the   device (ld) there is provided a recess (19) filled with a sealing gel, recess comprising a   bottom (21,22) provided with slots allowing the passage of of different diameters.   17. Device according to one of the claims   previous, characterized in that the front wall   (6d) of the device (ld) is provided with prematri- (23).   18. Device according to one of the claims   precedents, characterized in that each half of the   (2d) is formed with hinge elements (24) to form a hinge.