CA2097034C - Chemical sealing system for a fixing component in a hollow material - Google Patents
Chemical sealing system for a fixing component in a hollow materialInfo
- Publication number
- CA2097034C CA2097034C CA 2097034 CA2097034A CA2097034C CA 2097034 C CA2097034 C CA 2097034C CA 2097034 CA2097034 CA 2097034 CA 2097034 A CA2097034 A CA 2097034A CA 2097034 C CA2097034 C CA 2097034C
- Authority
- CA
- Canada
- Prior art keywords
- socket
- sheath
- wall
- casing
- nozzle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 24
- 239000011796 hollow space material Substances 0.000 title claims description 9
- 239000000126 substance Substances 0.000 title claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 239000011449 brick Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- YXZBWJWYWHRIMU-UBPCSPHJSA-I calcium trisodium 2-[bis[2-[bis(carboxylatomethyl)amino]ethyl]amino]acetate ytterbium-169 Chemical compound [Na+].[Na+].[Na+].[Ca+2].[169Yb].[O-]C(=O)CN(CC([O-])=O)CCN(CC(=O)[O-])CCN(CC([O-])=O)CC([O-])=O YXZBWJWYWHRIMU-UBPCSPHJSA-I 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
- F16B13/141—Fixing plugs in holes by the use of settable material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Catching Or Destruction (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The system comprises a sheath-casing (8) of variable conformation whose purpose is to receive the fixing component (1). The sheath is arranged so that, in a folded state, it passes through a hole (14) in the material and, beyond the hole and in an unfolded state, it envelops a hardening resin mortar. The sheath-casing (8) can be unfolded in the rest state elastically and, in the sealing position, it can be flared towards the outer wall (2) of the material and abutted against its inner face (16) under the action of a spring (4) connected to a socket (5"), on which the sheath is mounted, and of support devices (7) against the outer face (15) of the outer wall (2).
The invention is suitable for attachment to bricks.
The invention is suitable for attachment to bricks.
Description
20 ~7034 CHEMICAL SEALING SYSTEM FOR A FIXING
COM~O~.1 IN A HOLLOW MATERIAL
A conventional chemical sealing system for a fixing component in a hollow material, such as a brick, consists of a screen to be laid through at least one hole drilled in the outer wall of the material, preferably through a second hole drilled in the first inner wall, and which receives first a hardening resin mortar and then the fixing component, with its fixing end - male, female or hinge shaped, for example - projecting outside the outer wall of the material. When the fixing component is inserted into the screen, some of the resin mortar is pressed through the screen so that after hardening it seals the fixing component to the rear of the outer wall of the material, possibly also in the hole(s) of the walls of the material.
If the outer wall and the first inner wall are spaced well apart with a large cavity between them, the resin mortar expands in the cavity to the detriment of the strength of the seal. If the outer wall of the material is not sufficiently thick, the orifice of this wall may constitute a pivot for the fixing component whose position on the outer surface of the material may be incorrect, not to mention the weakening of the seal.
The present invention aims to reduce these problems, and to control the injection of mortar behind the outer wall and concentrate it on the largest possible surface of this outer wall, in order to ensure that the final seal is very strong and that the fixing component is positioned perfectly.
In document EP-A-0394189, a chemical sealing system has already been proposed for a fixing component in a hollow material with an outer wall, consisting of a sheath-casing of variable * Published ";
.. ..
COM~O~.1 IN A HOLLOW MATERIAL
A conventional chemical sealing system for a fixing component in a hollow material, such as a brick, consists of a screen to be laid through at least one hole drilled in the outer wall of the material, preferably through a second hole drilled in the first inner wall, and which receives first a hardening resin mortar and then the fixing component, with its fixing end - male, female or hinge shaped, for example - projecting outside the outer wall of the material. When the fixing component is inserted into the screen, some of the resin mortar is pressed through the screen so that after hardening it seals the fixing component to the rear of the outer wall of the material, possibly also in the hole(s) of the walls of the material.
If the outer wall and the first inner wall are spaced well apart with a large cavity between them, the resin mortar expands in the cavity to the detriment of the strength of the seal. If the outer wall of the material is not sufficiently thick, the orifice of this wall may constitute a pivot for the fixing component whose position on the outer surface of the material may be incorrect, not to mention the weakening of the seal.
The present invention aims to reduce these problems, and to control the injection of mortar behind the outer wall and concentrate it on the largest possible surface of this outer wall, in order to ensure that the final seal is very strong and that the fixing component is positioned perfectly.
In document EP-A-0394189, a chemical sealing system has already been proposed for a fixing component in a hollow material with an outer wall, consisting of a sheath-casing of variable * Published ";
.. ..
- 2 - 2097~34 conformation mounted on an internally threaded socket which receives the fixing component, with the sheath arranged so that, in a folded state, it passes through a hole drilled in the outer wall of the material and, beyond the hole, in a sealing position and in an unfolded state, it envelops a hardening resin mortar.
The system of this document, although it allows the resin mortar to be concentrated more or less correctly behind the outer wall of the receiving material, it does not, however, ensure a maximum contact area of the mortar on the inner face of the outer wall, because the sheath-casing is shaped like a closed pocket.
Moreover, and for this reason, mortar flow holes must be made in the walls of this pocket. Finally its attachment to both the socket and to an unfolding sleeve poses some manufacturing difficulties.
The applicant has therefore wished to propose a chemical sealing system which is easy to manufacture and ensures a seal on the outer wall of the receiving hollow material of truly optimum area.
This invention thus concerns a system of the type mentioned above, characterized by the fact that the sheath-casing is arranged so that it unfolds elastically in the rest position and, in the sealing position, flares out towards the outer wall abutting against its inner face under the action of return devices connected to the socket and of support devices against the outer face of the outer wall.
The fixing component to be sealed may either be a threaded pin, in other words a male component, or the assembly socket of the sheath-casing, in other words a female component which receives a fixing screw.
In the former case, and with the threaded pin screwed into the socket, the means of support against the outer face of the outer ~ 3 ~ 20~7~34 wall may comprise a flange with a hole permitting the passage of a nozzle for injecting the resin mortar.
In the latter case, the system may be combined with a tubular nozzle arranged so that it can be temporarily screwed into the socket; position the system in the material, inject the resin mortar, protect an inner portion of the socket which is to receive the fixing screw and separate the hardened resin mortar from the socket.
In both cases, the means of support against the outer face of the outer wall may comprise at least one coil with an enlarged end of a spring attached, at the other end, to the socket.
If the system of the invention is compared, for example, to the fixing system of document FR-A-1524897, a certain structural analogy may be observed between the fixing "umbrella" of the old system and the sheath-casing of the invention. In functional terms, however, the two systems have nothing in common. The fixing component of the former system is of prime importance for laying the umbrella against the inner face of the outer wall. In fact, it is the umbrella which is essential for holding the fixing component by screwing. As regards the sheath-casing of the invention, it does not need the fixing component to be held in the sealing position, since its function is to contain the resin mortar temporarily before it hardens. Simply using the umbrella of document FR-A-1524897 on a conventional chemical sealing screen, or in place of the pocket of document EP-A-0394189, although it might be envisaged, certainly would not permit a reconstitution of the system of the invention.
The lessons learnt from document FR-A-2200917 could not be further used to modify the system of document EP-A-0394189 and reconstitute that of the invention since, in one of the forms of embodiment, that of the two parts of the FR-A-2200sl7 system which is difficult to liken to an umbrella mounted on a socket (nut), it is comparable in functional terms to the umbrella of * Published .~ .
~ 4 ~ 2~97034 the FR-A-1524897 system, and since the other with the two parts, although on one side it comprises a sleeve in the form of a spring, on the other side it only comprises a sleeve for sliding on the first part. As for the other forms of embodiment (figures 6-9) shown by document FR-A-2200917 which could apparently more closely resemble the system of the invention, they cannot be considered to comprise a sealing "umbrella" bearing in mind the level of connection between the attachment fins of the part mounted on the nut and the bars of the helical sleeve. At all events, the fins of the various systems of FR-A-2200917 do not unfold, either at rest or elastically.
There is a so-called umbrella in the anchorage system of a tension component of document US-A-4501516. In this case, the umbrella is attached to the tension component; it is designed neither to receive a threaded pin or a fixing screw nor to contain the mortar injected behind, but to retain the latter.
In short, the invention as claimed above has perhaps consisted less of perfecting the system of document EP-A-0394189, but rather of considering, for the purposes of this document, a conventional sealing screen and fitting to it, in a non-evident manner, an umbrella of the previous system to make it act as a casing.
The invention will be better understood with the help of the following description of several examples of embodiment of the system of the invention, with reference to the attached drawing, on which - figure 1 is a perspective view of a first example of embodiment of the system of the invention;
- figure 2 is a perspective view of the return component of the system of figure 1;
* Published _ 5 _ 2~9703~
- figure 3 is a perspective view of a variant of embodiment of the return component;
- figure 4 is a partial section view of the system of figures 1-3 in the sealing position; appearing with figures l and 2;
- figure 5 is a perspective view of a second example of embodiment of the system of the invention;
- figure 6 is a perspective view of the socket of the system of figure 5;
- figure 7 is a perspective view of the nozzle for positioning, injection, protection and separation associated with the system of figure 5, and - figure 8 is a schematic section view of the nozzle and the socket of the system of figure 5, illustrating the use of the nozzle.
In its embodiment of figures 1 and 2, the chemical sealing system is intended for sealing a threaded pin 1 in a hollow material with outer wall 2, here a brick. In addition to the pin 1, the system comprises a monobloc return component 3, roughly tubular in shape, comprising a return spring 4 connected at one end to a socket 5 for receiving the pin 1 and at the other end, by means of axial ribs 6, to a support flange 7.
The system also comprises a sheath-casing 8 comprising an end sleeve 9 to which are attached and flexibly jointed flexible strips or plates 10, here trapezoidal in shape, and which can therefore be folded or, in the rest state, unfolded into an umbrella, flaring in the direction of their free ends 11.
The sheath 8 is mounted, by its sleeve 9, on the socket 5.
The collar 7 has a hole 17 to permit the passage of a nozzle for injecting the resin mortar.
- 6 - 20~70~
The sleeve 9 of the sheath-casing 8 can be force mounted onto the socket 5. It could also be bayonet fitted, as with the socket 5' of the return component 3' in figure 3. The sheath sleeve 9"
could also be clipped onto the socket 5" of the system of figure 4.
The socket 5 is internally threaded to match the thread of the pin 1, as shown on figure 4. As a variant, the inner wall of the socket could simply comprise moulded axial ribs in which the threaded pin itself taps the thread.
The return component is monobloc, in other words it has been made by a single injection in a mould. It is therefore easy to adapt the internal thread of the end socket to different threaded pin diameters by appropriate slides, without changing the other parts of the mould. In this case, on the flange 7', there are centring fins 12' (figure 3) with a passage diameter which can be adapted to that of the threaded pin.
The sheath-casing 8 is a split sheath with virtually contiguous plates. Instead of a virtually continuous sheath, a continuous sheath made of fabric could also be envisaged.
To prevent the pin rotating in the seal when a nut is screwed onto the projecting part of the threaded pin so as to attach a part to the pin once sealed, the pin comprises an anti-rotation or anchorage device. This can be a flat piece 13, as on the pin of the system in figure 4. More generally, the pin will be shaped so that at least over part of its length it has a non-circular section, for example triangular, rectangular, cruciform, and so forth.
The passage section between the ribs 6 is larger than the diameter of the pin 1, with the pin 1 extending freely inside the return component 3, except in the socket 5 with which it operates. The ribs 6' of the component of figure 3 are joined to _ 7 _ 2~g7~3~
a piece of sleeve 18' whose inner diameter, however, is larger than the diameter of the pin 1 on which it can freely slide.
The use of the system is as follows, with reference to figure 4.
It is engaged by pushing through a hole 14 previously drilled in the wall 2, with the sheath folding up in contact with the edges of the hole, until:
- the flange 7 rests against the outer face 15, and - the plates 10 pass right through to the other side of the wall, extending the spring 4 with the help of the threaded pin 1.
In this respect, it will be noted that the spring enables the system to be used for walls of different thickness.
Once on the other side of the wall 2, the sheath 8 unfolds elastically to the rest state and, under the action of the spring 4, the plates 10 of the sheath, with the pin 1, are pushed into the sealing position, with their ends 11 abutting the inner face 16 of the wall 2.
It may be observed that the ribs 6 constitute a means of centring the sealing system in the hole 14 of the wall 2.
The length of the portion of the pin 1 which has to project outside the wall is then adjusted by screwing or unscrewing the pin in the socket 5". Then, through the hole 17 of the flange 7, the injection nozzle is inserted and a resin mortar is injected which flows between the ribs 6 and into the space delimited by the plates 10 of the sheath-casing 8, and the resin mortar is allowed to harden before the part is secured to the pin. The pin is sealed by the resin mortar engaging in the pin's threads.
The sealing system as described above is like an open sheath towards the inner face of the wall and pinched between its bottom - 8 ~ 2~97~4 and this wall. Because of this, the sheath perfectly contains the resin mortar before the latter hardens, whatever its viscosity.
As a result of the injection pressure and the pressure exerted by the sheath, the resin mortar adheres well to the inner face of the wall.
In its embodiment illustrated in figures 5-8, the sealing system always comprises a fixing socket 25, of a particular nature as described below, on which a sheath-casing 28 is mounted, very similar to that of the example of embodiment in figures 1-4.
The particular feature of the socket 25 is that it has been formed from a cut and rolled metal sheet. On an axial plane, it comprises two lateral anchoring ribs 26 obtained by pinching, and in a series of radial planes comprising some cuts 27 constituting threaded portions. The socket 25 also comprises a lateral cut 28 to permit the flow of the resin mortar. Finally, the socket 25 is internally threaded.
The sheath-casing 28 is bayonet fitted to the socket 25 by its threaded part~. In this example of embodiment, the system comprises, by way of return components, a spring 29 "screwed" to the socket 25 by a series of coils 34 at one end and comprising, at the other end, a series of enlarged coils 30 whose purpose is to act as a support flange against the outer face 15 of the wall 2.
Associated with the socket 25, there is a tubular nozzle 31 whose end portion 32 has a narrowed outer diameter and which is partly threaded 33 so that it can first be inserted into the socket and then screwed in a virtually hermetic manner. At the other end of the nozzle 31, there is a ring with handling eyes 35. The inner section of the narrowed portion 32 of the nozzle 31 is not circular; here it is hexagonal to ensure, after the resin mortar has been injected, the separation of the column of hardened mortar from the socket 25.
9 2Q97~34 The two forms of embodiment of the system of the invention described above may be sealed equally well in either a hollow material or a solid material, and in the latter case, certainly unexpected, without the sheath-casing. To ensure a better understanding of the entire scope of this invention, it has been considered more interesting to describe the use of the second form of embodiment of figures 5-8 in a solid material.
Naturally its use in a hollow material, as regards the socket and its associated nozzle, is virtually identical.
After drilling a sealing hole 36 and removing the sheath-casing, the system is inserted in the hole 36 until the end coils 30 of the spring 29 come to rest against the surface 37 of the material, while the spring 29, by means of its coils adjacent to the coils of the end 30, holds the system correctly centred in the hole. Through the handling end 35 of the nozzle 31, a resin mortar is injected, which flows inside the nozzle and emerges through the cut 28 on the socket 25 and spreads through the hole 36, between the hole wall, the socket and the nozzle.
After the mortar has hardened the nozzle 31 is unscrewed, the effect of which is to shear off the column of mortar extending inside the nozzle flush with the end 38 of the narrowed portion 32 of the nozzle. After the nozzle 31 has been removed from the sealing hole, the inner thread of the socket having been protected over a length equal to that of the narrowed portion 32 of the nozzle, a fixing screw may be engaged in the circular hole preserved by the nozzle, and screwed into the socket.
The system of this document, although it allows the resin mortar to be concentrated more or less correctly behind the outer wall of the receiving material, it does not, however, ensure a maximum contact area of the mortar on the inner face of the outer wall, because the sheath-casing is shaped like a closed pocket.
Moreover, and for this reason, mortar flow holes must be made in the walls of this pocket. Finally its attachment to both the socket and to an unfolding sleeve poses some manufacturing difficulties.
The applicant has therefore wished to propose a chemical sealing system which is easy to manufacture and ensures a seal on the outer wall of the receiving hollow material of truly optimum area.
This invention thus concerns a system of the type mentioned above, characterized by the fact that the sheath-casing is arranged so that it unfolds elastically in the rest position and, in the sealing position, flares out towards the outer wall abutting against its inner face under the action of return devices connected to the socket and of support devices against the outer face of the outer wall.
The fixing component to be sealed may either be a threaded pin, in other words a male component, or the assembly socket of the sheath-casing, in other words a female component which receives a fixing screw.
In the former case, and with the threaded pin screwed into the socket, the means of support against the outer face of the outer ~ 3 ~ 20~7~34 wall may comprise a flange with a hole permitting the passage of a nozzle for injecting the resin mortar.
In the latter case, the system may be combined with a tubular nozzle arranged so that it can be temporarily screwed into the socket; position the system in the material, inject the resin mortar, protect an inner portion of the socket which is to receive the fixing screw and separate the hardened resin mortar from the socket.
In both cases, the means of support against the outer face of the outer wall may comprise at least one coil with an enlarged end of a spring attached, at the other end, to the socket.
If the system of the invention is compared, for example, to the fixing system of document FR-A-1524897, a certain structural analogy may be observed between the fixing "umbrella" of the old system and the sheath-casing of the invention. In functional terms, however, the two systems have nothing in common. The fixing component of the former system is of prime importance for laying the umbrella against the inner face of the outer wall. In fact, it is the umbrella which is essential for holding the fixing component by screwing. As regards the sheath-casing of the invention, it does not need the fixing component to be held in the sealing position, since its function is to contain the resin mortar temporarily before it hardens. Simply using the umbrella of document FR-A-1524897 on a conventional chemical sealing screen, or in place of the pocket of document EP-A-0394189, although it might be envisaged, certainly would not permit a reconstitution of the system of the invention.
The lessons learnt from document FR-A-2200917 could not be further used to modify the system of document EP-A-0394189 and reconstitute that of the invention since, in one of the forms of embodiment, that of the two parts of the FR-A-2200sl7 system which is difficult to liken to an umbrella mounted on a socket (nut), it is comparable in functional terms to the umbrella of * Published .~ .
~ 4 ~ 2~97034 the FR-A-1524897 system, and since the other with the two parts, although on one side it comprises a sleeve in the form of a spring, on the other side it only comprises a sleeve for sliding on the first part. As for the other forms of embodiment (figures 6-9) shown by document FR-A-2200917 which could apparently more closely resemble the system of the invention, they cannot be considered to comprise a sealing "umbrella" bearing in mind the level of connection between the attachment fins of the part mounted on the nut and the bars of the helical sleeve. At all events, the fins of the various systems of FR-A-2200917 do not unfold, either at rest or elastically.
There is a so-called umbrella in the anchorage system of a tension component of document US-A-4501516. In this case, the umbrella is attached to the tension component; it is designed neither to receive a threaded pin or a fixing screw nor to contain the mortar injected behind, but to retain the latter.
In short, the invention as claimed above has perhaps consisted less of perfecting the system of document EP-A-0394189, but rather of considering, for the purposes of this document, a conventional sealing screen and fitting to it, in a non-evident manner, an umbrella of the previous system to make it act as a casing.
The invention will be better understood with the help of the following description of several examples of embodiment of the system of the invention, with reference to the attached drawing, on which - figure 1 is a perspective view of a first example of embodiment of the system of the invention;
- figure 2 is a perspective view of the return component of the system of figure 1;
* Published _ 5 _ 2~9703~
- figure 3 is a perspective view of a variant of embodiment of the return component;
- figure 4 is a partial section view of the system of figures 1-3 in the sealing position; appearing with figures l and 2;
- figure 5 is a perspective view of a second example of embodiment of the system of the invention;
- figure 6 is a perspective view of the socket of the system of figure 5;
- figure 7 is a perspective view of the nozzle for positioning, injection, protection and separation associated with the system of figure 5, and - figure 8 is a schematic section view of the nozzle and the socket of the system of figure 5, illustrating the use of the nozzle.
In its embodiment of figures 1 and 2, the chemical sealing system is intended for sealing a threaded pin 1 in a hollow material with outer wall 2, here a brick. In addition to the pin 1, the system comprises a monobloc return component 3, roughly tubular in shape, comprising a return spring 4 connected at one end to a socket 5 for receiving the pin 1 and at the other end, by means of axial ribs 6, to a support flange 7.
The system also comprises a sheath-casing 8 comprising an end sleeve 9 to which are attached and flexibly jointed flexible strips or plates 10, here trapezoidal in shape, and which can therefore be folded or, in the rest state, unfolded into an umbrella, flaring in the direction of their free ends 11.
The sheath 8 is mounted, by its sleeve 9, on the socket 5.
The collar 7 has a hole 17 to permit the passage of a nozzle for injecting the resin mortar.
- 6 - 20~70~
The sleeve 9 of the sheath-casing 8 can be force mounted onto the socket 5. It could also be bayonet fitted, as with the socket 5' of the return component 3' in figure 3. The sheath sleeve 9"
could also be clipped onto the socket 5" of the system of figure 4.
The socket 5 is internally threaded to match the thread of the pin 1, as shown on figure 4. As a variant, the inner wall of the socket could simply comprise moulded axial ribs in which the threaded pin itself taps the thread.
The return component is monobloc, in other words it has been made by a single injection in a mould. It is therefore easy to adapt the internal thread of the end socket to different threaded pin diameters by appropriate slides, without changing the other parts of the mould. In this case, on the flange 7', there are centring fins 12' (figure 3) with a passage diameter which can be adapted to that of the threaded pin.
The sheath-casing 8 is a split sheath with virtually contiguous plates. Instead of a virtually continuous sheath, a continuous sheath made of fabric could also be envisaged.
To prevent the pin rotating in the seal when a nut is screwed onto the projecting part of the threaded pin so as to attach a part to the pin once sealed, the pin comprises an anti-rotation or anchorage device. This can be a flat piece 13, as on the pin of the system in figure 4. More generally, the pin will be shaped so that at least over part of its length it has a non-circular section, for example triangular, rectangular, cruciform, and so forth.
The passage section between the ribs 6 is larger than the diameter of the pin 1, with the pin 1 extending freely inside the return component 3, except in the socket 5 with which it operates. The ribs 6' of the component of figure 3 are joined to _ 7 _ 2~g7~3~
a piece of sleeve 18' whose inner diameter, however, is larger than the diameter of the pin 1 on which it can freely slide.
The use of the system is as follows, with reference to figure 4.
It is engaged by pushing through a hole 14 previously drilled in the wall 2, with the sheath folding up in contact with the edges of the hole, until:
- the flange 7 rests against the outer face 15, and - the plates 10 pass right through to the other side of the wall, extending the spring 4 with the help of the threaded pin 1.
In this respect, it will be noted that the spring enables the system to be used for walls of different thickness.
Once on the other side of the wall 2, the sheath 8 unfolds elastically to the rest state and, under the action of the spring 4, the plates 10 of the sheath, with the pin 1, are pushed into the sealing position, with their ends 11 abutting the inner face 16 of the wall 2.
It may be observed that the ribs 6 constitute a means of centring the sealing system in the hole 14 of the wall 2.
The length of the portion of the pin 1 which has to project outside the wall is then adjusted by screwing or unscrewing the pin in the socket 5". Then, through the hole 17 of the flange 7, the injection nozzle is inserted and a resin mortar is injected which flows between the ribs 6 and into the space delimited by the plates 10 of the sheath-casing 8, and the resin mortar is allowed to harden before the part is secured to the pin. The pin is sealed by the resin mortar engaging in the pin's threads.
The sealing system as described above is like an open sheath towards the inner face of the wall and pinched between its bottom - 8 ~ 2~97~4 and this wall. Because of this, the sheath perfectly contains the resin mortar before the latter hardens, whatever its viscosity.
As a result of the injection pressure and the pressure exerted by the sheath, the resin mortar adheres well to the inner face of the wall.
In its embodiment illustrated in figures 5-8, the sealing system always comprises a fixing socket 25, of a particular nature as described below, on which a sheath-casing 28 is mounted, very similar to that of the example of embodiment in figures 1-4.
The particular feature of the socket 25 is that it has been formed from a cut and rolled metal sheet. On an axial plane, it comprises two lateral anchoring ribs 26 obtained by pinching, and in a series of radial planes comprising some cuts 27 constituting threaded portions. The socket 25 also comprises a lateral cut 28 to permit the flow of the resin mortar. Finally, the socket 25 is internally threaded.
The sheath-casing 28 is bayonet fitted to the socket 25 by its threaded part~. In this example of embodiment, the system comprises, by way of return components, a spring 29 "screwed" to the socket 25 by a series of coils 34 at one end and comprising, at the other end, a series of enlarged coils 30 whose purpose is to act as a support flange against the outer face 15 of the wall 2.
Associated with the socket 25, there is a tubular nozzle 31 whose end portion 32 has a narrowed outer diameter and which is partly threaded 33 so that it can first be inserted into the socket and then screwed in a virtually hermetic manner. At the other end of the nozzle 31, there is a ring with handling eyes 35. The inner section of the narrowed portion 32 of the nozzle 31 is not circular; here it is hexagonal to ensure, after the resin mortar has been injected, the separation of the column of hardened mortar from the socket 25.
9 2Q97~34 The two forms of embodiment of the system of the invention described above may be sealed equally well in either a hollow material or a solid material, and in the latter case, certainly unexpected, without the sheath-casing. To ensure a better understanding of the entire scope of this invention, it has been considered more interesting to describe the use of the second form of embodiment of figures 5-8 in a solid material.
Naturally its use in a hollow material, as regards the socket and its associated nozzle, is virtually identical.
After drilling a sealing hole 36 and removing the sheath-casing, the system is inserted in the hole 36 until the end coils 30 of the spring 29 come to rest against the surface 37 of the material, while the spring 29, by means of its coils adjacent to the coils of the end 30, holds the system correctly centred in the hole. Through the handling end 35 of the nozzle 31, a resin mortar is injected, which flows inside the nozzle and emerges through the cut 28 on the socket 25 and spreads through the hole 36, between the hole wall, the socket and the nozzle.
After the mortar has hardened the nozzle 31 is unscrewed, the effect of which is to shear off the column of mortar extending inside the nozzle flush with the end 38 of the narrowed portion 32 of the nozzle. After the nozzle 31 has been removed from the sealing hole, the inner thread of the socket having been protected over a length equal to that of the narrowed portion 32 of the nozzle, a fixing screw may be engaged in the circular hole preserved by the nozzle, and screwed into the socket.
Claims (15)
1. Chemical sealing system for a fixing component in a hollow material with outer wall (2), comprising a sheath-casing (8;28) of variable conformation mounted on an internally threaded socket (5;25) for receiving the fixing component (1), the sheath being arranged so that, in a folded state, it passes through a hole (14) drilled in the outer wall (2) of the material and beyond the hole, in a sealing position and in an unfolded state, it envelops a hardening resin mortar, characterized by the fact that the sheath-casing (8;28) is arranged so that it unfolds in the rest state elastically and in the sealing position, it flares out towards the outer wall (2) and abuts against its inner face (16) under the action of return devices (4; 29) connected to the socket (5;25) and of support devices (7;30) against the outer face (15) of the outer wall (2).
2. System according to claim 1, in which a threaded fixing pin (1) is screwed into the socket (5) to be sealed.
3. System according to claim 2, in which the support devices against the outer face (15) of the outer wall (2) comprise a flange (7) with a hole (17) which permits the passage of a resin mortar injection nozzle.
4. System according to claim 3, in which the support flange (7') comprises fins (12') for centring the threaded pin whose passage diameter can be adapted to that of the threaded pin (1).
5. System according to claim 2, in which the said return devices (4), the socket (5) and the said support devices (7) form a monobloc return component ( 3) roughly tubular in shape in which the threaded pin (1) freely extends.
6. System according to claim 2, in which the threaded pin (1) comprises anti-rotation anchorage devices (13).
7. System according to claim 1, in which the socket (25) is arranged to be sealed and to receive a fixing screw.
8. System according to claim 7, in which a tubular nozzle (31) is associated with the socket (25) to be temporarily screwed to it and to position the system, ensure the injection of resin mortar, protect an inner portion of the socket (25) intended to receive the screw and separate the hardened resin mortar from the socket (25).
9. System according to claim 7, in which the socket (25) is formed from a cut and rolled metal sheet.
10. System according to claim 9, in which the socket (25) comprises lateral anchoring ribs (26) in which cuts (27) have been made.
11. System according to claim 8, in which the nozzle (31) comprises an end portion (32) arranged to operate with the socket (25).
12. System according to claim 11, in which the end portion (32) of the nozzle (31) has a non-circular internal section.
13. System according to claim 1, 2, 7, 8, 9, 10, 11 or 12, in which there is a spring (29) engaged on the socket (25) by coils (34) at one end and comprising at the other end at least one enlarged coil (30) resting against the outer face (15) of the outer wall (2).
14. System according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, in which the sheath-casing (8;28) comprises an end sleeve (9) to which are flexibly jointed some flexible plates (10) and which is mounted on the socket (5;25).
15. System according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, in which the sheath-casing comprises a continuous fabric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9206499A FR2691764B1 (en) | 1992-05-27 | 1992-05-27 | SYSTEM FOR THE CHEMICAL SEALING OF A FIXING ELEMENT IN A HOLLOW MATERIAL. |
| FR92.06499 | 1992-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2097034A1 CA2097034A1 (en) | 1993-11-28 |
| CA2097034C true CA2097034C (en) | 1996-04-23 |
Family
ID=9430238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2097034 Expired - Fee Related CA2097034C (en) | 1992-05-27 | 1993-05-26 | Chemical sealing system for a fixing component in a hollow material |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0572296B1 (en) |
| CA (1) | CA2097034C (en) |
| DE (1) | DE69313182T2 (en) |
| ES (1) | ES2107637T3 (en) |
| FR (1) | FR2691764B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009013847A1 (en) * | 2009-03-18 | 2010-09-23 | Fischerwerke Gmbh & Co. Kg | anchor sleeve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1340117A (en) * | 1972-06-30 | 1973-12-12 | Houston T R | Anchorage pins |
| SE365588B (en) * | 1972-09-27 | 1974-03-25 | Thorsmansdoedsbo O | |
| DE2453957B2 (en) * | 1974-11-14 | 1976-11-18 | Fischer, Artur, Dr., 7244 Waldachtal | ANCHORING A FASTENING ELEMENT |
| DE2723729C2 (en) * | 1977-05-26 | 1979-04-05 | Fischer, Artur, Dr.H.C., 7244 Waldachtal | Anchoring a fastening element in a borehole of a masonry having cavities |
| DE3325800A1 (en) * | 1983-07-16 | 1985-01-31 | Heinrich 6102 Pfungstadt Liebig | Adhesive anchor |
| DE3712463A1 (en) * | 1987-04-13 | 1988-10-27 | Hilti Ag | FASTENING ON CAVITY SUBSTRATE |
-
1992
- 1992-05-27 FR FR9206499A patent/FR2691764B1/en not_active Expired - Lifetime
-
1993
- 1993-05-11 EP EP19930401198 patent/EP0572296B1/en not_active Expired - Lifetime
- 1993-05-11 DE DE1993613182 patent/DE69313182T2/en not_active Expired - Fee Related
- 1993-05-11 ES ES93401198T patent/ES2107637T3/en not_active Expired - Lifetime
- 1993-05-26 CA CA 2097034 patent/CA2097034C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0572296A1 (en) | 1993-12-01 |
| EP0572296B1 (en) | 1997-08-20 |
| FR2691764A1 (en) | 1993-12-03 |
| ES2107637T3 (en) | 1997-12-01 |
| FR2691764B1 (en) | 1995-08-25 |
| DE69313182T2 (en) | 1998-03-05 |
| DE69313182D1 (en) | 1997-09-25 |
| CA2097034A1 (en) | 1993-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |