JPH0158394B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a plugging device for a socket made of concrete, etc., which includes a band-shaped fixing part surrounded by concrete through a holding part, and a sealing ring made of an elastic material fixed to a bell-shaped body. The fixing part has a cross section that transitions into a thicker sealing part in accordance with the predetermined compression distance between the inner wall of the bell-shaped body and the outer wall of the inserted tube end, the sealing part being It concerns what is brought into the operating position from its installation position by rolling in the direction of the bell-shaped body surface.

The term "installation position" refers to the state of the sealing part with respect to the bell-shaped body during manufacture, possibly during transport and storage. The term "operating position" refers to the position occupied by the sealing part when the tip of the adjacent tube is inserted into the bell during tube installation. The term "concrete pipe" covers reinforced concrete pipes and concrete pipes without reinforcement, as well as concrete profiles with sockets, such as branch pipes, bent pipes, connecting pipes, ventilation pipes, etc.

A sealing mechanism for concrete pipes of the type mentioned at the outset is known from German Patent Application No. 2252089. Known sealing mechanisms are constructed in the form of roll ring packing. However, this sealing mechanism differs from conventional roll ring packing in that the sealing mechanism is surrounded by concrete in the bell-shaped body of the concrete pipe via a retaining collar. During insertion of the tip into the bell, the sealing ring can be moved from its installed position into the sealing position or into the "operating position" so that the cross-section of the sealing ring at least partially lies on the inner wall of the bell. It is necessary to go beyond the surface. An inversion process can only occur upon insertion of the tip into the bell-shaped body. From the point of view of manufacturing technology, this sealing mechanism not only requires the creation of specially shaped sockets, for which the hitherto customary socket moldings can no longer be used, but rather It has the disadvantage that an additional removable molding ring must be used for undercutting to create the necessary inversion range in the profile. This makes the manufacturing process difficult and expensive.
A disadvantage of the known sealing part is that upon insertion of the tip into the end position, due to the inversion of the sealing part, it almost abuts against the rear end of the bell-shaped body, so that the sealing part cannot be positioned in an orderly manner. In order to ensure this, the inserted tip must in practice always be pressed very strongly against the bell-shaped body surface after installation.
A further disadvantage of the known sealing part is that during insertion of the tip the sealing ring is inverted over a point where its cross section is reduced by the retaining part surrounded by concrete. Since substantially complete compression of the sealing ring is already applied during the reversal, there is a risk that the bell-shaped body will break at this point.

U.S. Patent No. 3,866,925 (No. 6, 12 and 1
From Fig. 4) a sealing mechanism is known which is fixed to the bell-shaped body of the tube via a retaining part, the sealing element of which is secured by a ring-shaped lip which is slid upon insertion of the tip onto the sealing element. It is formed. The closing force is generated by a spring element embedded in the elastic material of the sealing lip. A disadvantage of this known embodiment is that the closing force is constructed in a spring element and is thereby reduced compared to a sealing mechanism in which the closing force is generated by compression of the sealing part. The lip-shaped design of the sealing part creates a linear contact with the opposing surface of the gap to be sealed, so that here too, for example on rough concrete surfaces, the plugging force is reduced. There is an undeniable risk of failure in the socket closure device.

The embodiment according to FIG. 6 of U.S. Pat. This has the disadvantage that insertion beyond the shear load safety is prevented, so that the sealing part accommodates all lateral forces, including operating loads.

In the embodiment according to FIG. 12 of U.S. Pat. On the other hand, the socket must be removed before concrete application, and on the other hand there is a risk that the sealing element will move during concrete filling. In the embodiment according to FIG. 14, for the undercut between the sealing part and the bell face, a removable molding ring must additionally be fitted onto the socket before concrete application.

The invention creates a socket closure device of the type mentioned at the outset, without modification of existing molding tools and without the need for additional molding material to be applied to the socket. The basis of the task is to combine the sealing part with the bell-shaped tube during manufacture.

According to the invention, this problem is solved because in the installed position the sealing ring forms the inner edge of the bell opening, and in the operating position the surface of the sealing part which rests against the internal wall of the bell forms the inner edge of the bell in the installed position. This problem is solved by being arranged at a substantially surface position. Such a sealing ring is completely fitted into a conventional socket from which the concrete filled in the mold can be smoothly withdrawn after shaping. During installation, the sealing part is turned in the direction of the bell surface either by hand before the insertion of the point or by the point itself entering the bell. In this case, the sealing part projects beyond the inner wall of the bell, so that upon insertion of the point, the tensioning of the socket connection is effected in the radial direction by a corresponding compression of the sealing part.

Another advantage of the closure structure according to the invention is that when the sealing part is transferred into the operating position, the retaining part surrounded by concrete in the bell wall is in front of the sealing part with respect to the direction of insertion of the point, so that at any point The bell-shaped cross-section, which is weakened by the holding part, is not subjected to any crimping forces.

In a preferred embodiment of the invention, it is provided that in the installation device the strip-shaped fastening part and the sealing part abut one another in a plane, and the holding part connects to the fastening part on the side opposite the sealing part. There is.
This means that the holding part is fixed at a sufficient distance both from the end face of the bell-shaped body and from the inner wall of the bell-shaped body, so that fracturing of the groove formed in the bell-shaped body by the holding part is avoided.

In a preferred embodiment of the invention, the strip-shaped fixing part and the sealing part are formed with similar surfaces facing each other in the installation position.

In particular, in a further embodiment of the invention, the strap-shaped fastening part - with respect to the longitudinal section of the bell - has an acute angle with respect to the bell wall, and the transition between the fastening part and the sealing part is the fastening part. This is useful when the bell-shaped body wall is located in the contact area of the bell-shaped body wall.

In a further embodiment of the invention, the cross section of the sealing part is - with respect to the installation position - convex on the side opposite the fixing part, preferably approximately triangular in shape, the height of the curvature being greater than the height of the working cross section. is equivalent to
The advantage of this embodiment is that after the transition of the sealing part into the operating position, the free surface of the sealing part exhibits a smooth conical course, so that it acts as a centering point during insertion of the point. Furthermore, this configuration results in very good molding properties for the sealing part, which are compatible with both the bell-shaped sealing surface and the pointed sealing surface, up to complete contact.

In the embodiment of the invention, it is provided that in the installation device the sealing part and the fixing part are connected at their mutually abutting surfaces by a removable connection. This has significant advantages for the handling of the sealing ring, since the relatively thin-walled strip-shaped fixing part is fixed to the form-rigid sealing element and can be easily inserted into the socket by prestressing. This is because perfect positioning to the receiving port is guaranteed. This configuration is particularly advantageous if the sealing ring consisting of parts of the cord is formed by joining the ends, since the sealing part and the fixing part are glued together when they are inserted into the socket. This is because the accidental engagement and disengagement of the fixed portion of the device is avoided. The releasable connection is made by hot-melt adhesive in one embodiment of the invention, by double-sided adhesive tape in another embodiment, or by shape-locking of a protrusion on one part into a corresponding groove on another part. It can be formed by intervening.

In an advantageous embodiment of the invention, it is provided that the retaining part of the fastening part has a trapezoidal cross section and is oriented approximately at right angles to the fastening part.
It is preferably provided that the fixing part and the holding part form a substantially T-shaped cross section. A safe fixation of the sealing ring is thus ensured, so that the sealing ring can be pulled out of its engagement part by the forces generated at the time both during transfer to the operating position and during insertion of the point. This also applies in the case of storage of the socket, where it must be ensured that the sealing part cannot be torn from the bell-shaped body, for example by children playing.

In a further development of the invention, it is provided that the strip-like retaining part is provided with a sleeve which extends in the direction of the bell-shaped body surface and can rest against the inner wall of the bell-shaped body. The area of the bell-shaped internal wall covered by the component "obstruction" by the sleeve is significantly enlarged, so that in this area there is no longer any direct contact between the surface of the socket and the filled concrete. not exist. This design makes it possible to pull out the socket mechanically and possibly also by means of a vibrating device, in the region of the inner wall of the bell body which is dangerous due to the effectiveness of the sealing device, i.e. No damage occurs on the inner surface of the bell during the abutment for the sealing part in the operating position. In the industrial production of concrete pipes, it is provided that the sockets are drawn out even before the concrete is completely bonded. In this case, despite the normal handling of the socket by means of the insert, cracks can occur locally in critical areas on the inner surface of the ready-mixed concrete in the area of the socket. The mechanism according to the invention of the sleeve improves the ability to pull out the receptacle.

In a preferred embodiment of the invention, it is provided that the sleeve covers the area of the inner wall of the bell-shaped body, on which area the sealing part rests in the operating position. In this way it is ensured that the maximum pressing force area of the sealing part is free from any edges or steps that could lead to an obstruction. The sleeve should be as thin as possible in its thickness. The limits of the thickness of the sleeve are determined by the method of manufacturing the sealing part and/or by the material used therefor. The dimensions of the pressing cross-section of the sealing part as well as the thickness must be taken into consideration in accordance with the sleeve made of elastic material, so that the necessary full pressing force of the closure can be maintained.

Since the sealing ring is fitted onto the socket with an expedient prestress before concrete application, a series of further advantages result. The prestress has the effect, in part, that the sealing part is removed from the bell body after withdrawal of the receptacle by means of the abutment surface predetermined by the installation position. In a corresponding measurement of the prestress, the sealing part is raised by the adjacent tube upon insertion of the tip of the adjacent tube until it is moved into the operating position.

Manual transfer to the operating position is no longer necessary with a corresponding preselected prestress.

After withdrawal of the socket, the sleeve is also lifted off the concrete surface due to the preload, so that the concrete surface located below the sleeve can be inspected visually in a simple manner. Possible cavities in this range can thereby be secured and improved. This visual inspection is therefore very important, since it is precisely this bell-shaped surface that forms the obturation surface. Cavities, cracks, etc. lead to a reduction in the pressure of the sealing part on the concrete surface in this area, and there is therefore a risk of failure of the pipe connection.

In a preferred embodiment of the invention, it is provided that the free end of the sleeve projects in the form of a lip. This means that the intermediate space between the sleeve and the socket is sealed, so that no cement milk enters this space during filling with concrete during the manufacture of the tube. Another advantage of this form of free edge of the sleeve is that the arrangement of this lip requires removal of the sealing part from the concrete body after withdrawal of the socket.

In the embodiment of the invention, the sealing part has a lip on its free edge. The placement of the lip in the sealing part also serves to avoid the inflow of cement milk between the sealing part and the socket during the concrete application process. Again, the provision of this lip requires removal of the seal from the concrete body after extraction of the socket.

In a further embodiment of the invention, it is provided that the holding part, which is arranged on the strip-shaped fixing part and which is preferably trapezoidal in cross-section, has an outwardly projecting bottom surface. This configuration has the advantage that the possibility of deformation is minimized relative to the planar bottom surface of the holding part and that the withdrawal of the concreted sealing ring is accordingly made difficult.

The present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows a support opening 2 necessary for manufacturing in a longitudinal section through a bell-shaped body 1 of a concrete pipe. The sealing ring 3, which is to be surrounded by concrete during manufacture, is fitted under prestress over the support socket up to its lower end. Arrow 4 due to preload
Floating of the sealing ring is avoided during filling with concrete flowing into the mold in the direction , ie from top to bottom.

The sealing ring consists of a band-shaped fastening part 5, which transitions into a sealing part 6 with a thicker cross section. A fixing part 5 and a holding part 7 are connected, the holding part having a trapezoidal cross section in the illustrated embodiment.
The sealing part 6 has an approximately triangular cross section, the height h of the triangle corresponding to the desired thickness of the sealing part 6. The retaining part 7 is oriented approximately at right angles to the band-shaped fixing part 5 and is completely surrounded by concrete after filling with concrete.
However, during the manufacture of the profile for the sealing ring, after mounting the sealing ring on the support socket 2 under prestress, the holding part 7 assumes the position shown in the figure, with the possibility of holding Bell-shaped body 1 of part 7
The surface facing end face 8 of is oriented at least parallel to face 9 and preferably slightly upwardly at an angle, so that air bubbles are prevented from forming in this area during filling with concrete. out of range thereby retaining part in the concrete 7
Cavities that would impede firm locking are avoided.

After withdrawal of the support receptacle, the sealing part 6 of the sealing ring 3 forms the free inner edge of the bell-shaped opening. Under the influence of the preload, the sealing part 6 is pulled out of the bell-shaped body. Depending on the degree of prestress, the sealing part 6 can be transferred manually into the operating position represented by the dotted line, or the sealing part 6 can be gripped by the tube during the insertion of the next tube tip and the next It is brought into the operating position represented by the dotted line in , and is then pressed in this position when the insertion of the point proceeds further, so that the necessary closing force is created by the sealing ring. Before the transition, the surfaces against which the sealing part 6 abuts in the operating position are visually inspected.

As is clear from the drawing, the outer surface 1 of the seal portion 6 is
0 indicates the insertion direction (arrow 1
1) A conically contracted ring surface is formed, which provides good centering during insertion of the point. The surface 10 and the point are lubricated in the usual manner before mutual movement.

The preferred embodiment of the sealing ring shown in FIG. 2 has a sealing portion 6 of approximately triangular cross section. However, the sealing part 6 is connected in this embodiment with a strip-shaped fastening part 12, which together with its holding part 13 has an approximately T-shaped cross section. The fastening part 12 and the sealing part 6 are in plane contact with each other in the illustrated installed state, the trapezoidal holding part 13 being aligned with its face 9 in the direction of concrete filling (arrow) with respect to the front face 8 of the bell body 1 4), so that the formation of cavities due to bubble containment in this region is practically avoided. The cross-sectional shape shown is particularly suitable for the production of sealing rings consisting of cords, which, when inserted into the supporting receptacle 2 shown in dotted lines, have a fixed part 12 with different expansion rate ratios. With a corresponding thickness of the sealing part 6 in the transition range , a complete alignment of the holding part 13 in the desired position is obtained. Another advantage of this embodiment is that the fixing part 12 and the sealing part 6 can be connected to each other by a releasable connection at their contact surfaces, resulting in an easy-to-handle profile. . The releasable connection is effected by means of a hot-melt adhesive, which is applied, for example, to the corresponding surface of the fastening part 12 during the production of the profile cord and then connected to the sealing part 6 by winding. be done. Double-sided adhesive tape can also be applied instead of hot melt adhesive. After pulling out the support receptacle 2, the sealing part 6 is brought into the operating position in the same way as in the embodiment according to FIG. 1, ie by shifting in the direction of the bell-shaped body surface.

As can be seen from the embodiment according to FIG. 2a, instead of gluing the fixing part 12 and the sealing part 6, a removable positive-locking connection can be provided.
As shown, this consists of a web 21 with a thick head on the outer edge of the fastening part 12 and a correspondingly formed groove 22 in the sealing part 6. For the installed position, the web 21 is "inserted" into the groove 22. In this way, the gap between the two surfaces that abut each other and the fixing part 12 in the installation position of the sealing part 6 is closed, as is the case with the adhesive, which is also expediently arranged in the edge area. As a result, no cement milk can flow in when enclosing with concrete. The surface 10 of the sealing part 6, which will later form the sealing surface, remains clean.

Advantageously, the fixing part 12 is connected to the web/groove connection 2.
1, 22 is additionally provided with a retaining part 23 of smaller dimensions, which ensures that the fastening part 12 remains in a predetermined position during the engagement and disengagement of the web/groove connection. ing.

In the embodiment shown in FIG.
4 has a thickened part 15 forming the front edge of the bell-shaped body opening, in which a holding part 16 is also arranged, which holding part is designed, for example, in the shape of a hammerhead. In the installed position, the strip-shaped fixing part 14 has a sealing part 17 "swiveled", whereby the sealing part 17
and the thickened part 15 are connected to each other directly by means of corresponding shapes as shown or by gluing, for example with an adhesive tape 18. After pulling out the support socket and removing the adhesive tape 18, the sealing part 17
is brought to the assembly position.

All embodiments can be made both as molded parts and from string profiles. The elastic material used can have a dense or cellular structure. In production from cord profiles, extrusion makes it possible to produce the retaining part from a material with a dense structure and high hardness, while the sealing part, which consists of a material with a cellular structure, has the hardness or hardness required for the desired tightening force. It can be manufactured with tensile strength. A fastening part connecting the retaining part and the sealing part is then likewise made of dense tissue material and locked to the sealing part.

In the installed position shown, the profile of the sealing part 6 of the embodiment according to FIGS. 1, 2 and 2a is supported at the transition between the end face 8 and the inner wall 19 of the surface forming the bell-shaped or socket. Corresponds to the profile of the recipient. Embodiments in which an additional abutment surface is formed on the support receptacle 2 by a corresponding step 20, as shown in FIG. 2a, on the bell-shaped body or the receptacle are within the scope of the invention. , since this is a variant that differs only in that, firstly, undercutting in the area of the inner wall of the bell-shaped body is avoided during manufacture.

Similar closure configurations according to the invention described for the concrete pipe embodiment can also be used for the closure of so-called shaft rings, which are used for the production of connecting shafts of drainage systems. The shaft ring is also equipped with a bell-shaped recess on one side, in which a sealing ring of the proposed shape is surrounded by concrete, and at its end it is formed in the form of a point, so that the formation of the shaft For this purpose, a number of shaft rings are respectively mounted one on top of the upwardly directed cusps, and in each case the blocking gap between the tip and the bell-shaped recess is completely filled by a blocking section surrounded by concrete. It's under siege.

In the longitudinal sectional view of the bell-shaped concrete tube shown in FIG. 4, the support opening 2, which is also necessary for manufacturing, is shown. The sealing ring 3', which is to be surrounded by concrete during manufacture, is fitted under prestress over the support socket 2 up to its lower end. The prestress prevents the sealing ring from floating during filling with concrete flowing into the mold in the direction of arrow 4, ie from top to bottom.

The sealing ring consists of a band-shaped fastening part 5, which transitions into a sealing part 6' with a thicker cross section. A fastening part 5' and a holding part 7' are connected, which in the illustrated embodiment has a trapezoidal cross section. The sealing part 6' is designed in the form of a bulge, the transverse height h being set taking into account the desired pressing distance. The holding part 7' is oriented approximately at right angles to the band-shaped fixing part 5' and is completely surrounded by concrete after filling with concrete. During the production of the profile of this sealing ring 3, after the sealing ring has been fitted onto the support receptacle 2 under prestress, the retaining part 7' assumes the position shown, with the possibility of bell-shaped 1 The surface 9 of the holding part 7' facing the end face 8 of the retaining part 7' extends slightly upwardly at an angle, so that air bubbles can escape from this area during filling with concrete, thereby increasing the concentration of water in the concrete. Cavities that would impair the rigid engagement of the holding part 7' are avoided.

The sealing portion 6' of the sealing ring 3' forms the free inner edge of the bell-shaped opening (FIG. 4). Under the effect of prestress, the sealing part 6' is removed from the bell-shaped body after the support receptacle is pulled out (FIG. 5). The degree of preload is determined by the position (state) where the seal portion 6' is removed from the bell-shaped body.
determined by. In the illustrated embodiment, the prestress is such that the sealing part 6' projects into the free cross section of the bell-shaped opening;
It is therefore set to occupy that operating position.
Upon insertion of the prong 24 of the adjacent tube, the sealing part 6' is gripped by the adjoining tube and immediately abuts the inner surface, as shown in FIG. brought to the indicated mounting position.

As can be seen in FIG. 4, the fixing part 5' is provided with a sleeve 26 extending in the direction of the bell-shaped inner surface 25. The length of the sleeve 26 is the sealing portion 6'
is set so as to cover the area of the inner wall of the bell-shaped body 1 that abuts in the device position shown in FIG. The sleeve 26 is designed with a lip-like projection on its free edge 27, so that the sealing ring, which is placed on the support receptacle 2 under prestress, rests tightly against the support receptacle 2. Support socket 2
As soon as the sleeve 26 is pulled out, it is lifted off the inner wall of the bell 1 under the effect of a preload and assumes the position shown in FIG. Thus sleeve 26
The concrete surface covered by the concrete surface is freed and its complete state is recognized. As is clear from FIG. 6 in the installed state, the sleeve 26
is pressed into the flat recess created when the inner wall of the bell-shaped body is concreted.

In the embodiment shown, the sealing ring 6' has a generally oval cross-section, which cross-section has a lip 28 on its free edge. This lip 28, as is clear from FIG. 4, has significance only for the manufacturing process and serves to tighten the area of contact of the sealing ring 3' on the support receptacle 2. Due to the location of the lip-like material 28, concrete cannot flow between the support socket and the seal part, so it is necessary to peel off the seal part 6' from the concrete surface after the support socket is pulled out. It is said that

A retaining part 7', which is preferably trapezoidal in cross section and is arranged on the fixing part 5', has an outwardly projecting bottom surface 29.
has. Due to the curvature of the bottom surface 29, the holding portion 7'
The deformability of the retaining part 7' is somewhat reduced, i.e.
Upon tension in the direction of the arrow 30, which allows the retaining part 7' to be pulled out of its locking state in the concrete, the border edge 31 of the retaining part 7'"reverses" in the direction opposite to the force direction.
is prevented, so that a safe locking of the holding part 7' in the concrete is ensured.

[Brief explanation of drawings]

1 is a longitudinal sectional view of the bell of the obturation device in the installed and assembled positions; FIGS. 2 and 2a are longitudinal sectional views of the bell of the preferred embodiment; and FIG. 3 is a further embodiment of the bell. FIG. 4 is a longitudinal section through the bell of the concrete pipe with the used support socket with the cuffing device in the installed position, FIG. FIG. 6 is a longitudinal section of the obturation device in the assembled position of the point, and FIG.
Figure 3 shows a diagrammatic receptacle connection. Symbols in the figure: 1...Bell-shaped body, 3...Seal ring, 19...Inner wall of bell-shaped body.

Claims (1)

[Scope of Claims] 1. A plugging device for a concrete pipe, comprising a band-shaped fixing part surrounded by concrete through a holding part, and a sealing ring made of an elastic material fixed to a bell-shaped body, The fixing part has a cross section that transitions into a thicker sealing part corresponding to the predetermined compression distance between the inner wall of the bell and the outer wall of the inserted tube end, the sealing part being on the bell surface. brought into the operating position from its installed position by winding in the direction of , the sealing ring 3 forms the free inner edge of the bell opening in the installed position and rests against the inner wall of the bell in the operating position. A device for blocking an insertion opening for a concrete pipe, characterized in that the surface of the sealing portion in contact with the inner wall 19 of the bell-shaped body 1 is disposed at a substantially flush position in the installed position. 2. In the installation position, the strip-shaped fixing parts 12, 14 and the sealing parts 6, 17 are in surface abutment, with the holding part 13, 16 being arranged on the fixing part on the side opposite to the sealing parts 6, 17. An insertion port blocking device according to claim 1. 3. The insertion opening closing device according to claim 2, wherein the band-shaped fixing portion 12 and the sealing portion 6 are formed on the same plane with surfaces facing each other in the assembled position. 4 With respect to the longitudinal section through the bell-shaped body 1, the band-shaped fixing part 12 is oriented at an acute angle with respect to the bell-shaped wall 19, and the transition between the fixing part 12 and the sealing part 6 forms a line between the bell-shaped wall 19 and the fixing part. 12. The insertion port closing device according to claim 2 or 3, which is located in the range of the intersection with 12. 5 The cross section of the seal portion 6 is relative to the installation position,
The insertion opening obstructing device according to any one of claims 1 to 4, which is curved on the side opposite to the fixed portion 12 and is particularly formed in a substantially triangular shape. . 6 Seal part 6 and fixed part 1 in assembled state
2 is connected to the receptacle according to any one of claims 3 to 5, wherein the receptacle is connected to the receptacle by a removable connecting portion on surfaces that abut each other. Obstruction device. 7. Claim 6, in which the removable connection is formed as an adhesive connection using hot-melt adhesive.
The plug-in socket closure device described in Section 1. 8. The insertion opening closing device according to claim 6, wherein the releasable connecting portion is formed of double-sided adhesive tape. 9 The removable joint is the web 21 of one part.
7. A plug-in socket closure device as claimed in claim 6, in which the other part is constituted by a form-locking engagement in a correspondingly formed groove 22 of the other part. 10. Claims 1 to 9, in which the holding parts 7, 13 of the fixed parts 5, 12 have a substantially trapezoidal cross section and are oriented substantially at right angles to the fixed parts 5, 12. The insertion port blocking device described in any one of the preceding paragraphs. 11. Claims 1 to 1, wherein the fixed part 12 and the holding part 13 form a substantially T-shaped cross section.
The insertion port blocking device described in any one of items up to item 0. 12 retaining part 7 facing the front plane 8 of the bell-shaped body 1;
Plug-in according to any one of claims 1 to 11, in which the faces 9 of 13 run at least parallel to the front plane 8 and preferably form an acute angle. Socket closure device. 13 The band-shaped fixing part 14 has a thickened part 15 forming the front edge of the bell-shaped body opening, the thickness of which substantially corresponds to the thickness of the sealing part 17, and the thickened part is located in the position where the sealing part is installed. The insertion port closing device according to any one of claims 1 to 12, which is held in that position. 14 A sleeve 26 in which the strip-shaped holding part 5 extends in the direction of the bell-shaped body surface 25 and is capable of abutting against the inner wall of the bell-shaped body 1
Claims 1 to 13, comprising:
The insertion port blocking device described in any one of the preceding paragraphs. 15. The plug-in socket closure device according to claim 14, wherein the sleeve 26 covers the area of the inner wall of the bell body 1, against which area the sealing part 6 rests in the operating position. 16. The insertion socket closure device according to claim 14 or 15, wherein the free edge 27 of the sleeve 26 protrudes like a lip. 17 The seal portion 6 has a lip-like substance 2 on its free edge.
Claims 14 to 16 having 8
The insertion port blocking device described in any one of the preceding paragraphs. 18 A leg surface 2 arranged on the strap-shaped fixing part 5 and having a retaining part 7 of preferably trapezoidal cross section curved outwards.
Claims 14 to 17 having 9
The insertion port blocking device described in any one of the preceding paragraphs.