Sealing string

Abstract

Sealing strand with a flexible, longitudinally extending puller element (6, 6b, 6b', 6b'', 6b''') which forms an aid for the assembly of the sealing strand, which in a puller operation transfers a sealing lip (3) of the assembled sealing strand into its intended position, wherein the puller element (6) consists of a rubber sheath (7) co-extruded with the sealing lip (3) and a cord (8) embedded in the rubber sheath (7) and projects beyond at least one strand end (9), characterized in that an end piece (10, 10b, 10b', 10b'', 10b''') of the puller element (6, 6b, 6b', 6b'', 6b''') projecting beyond the strand end (9) is connected at a connection point (12, 14) to the rest of the puller element (6,6b,6b',6b'',6b'''') is connected, with the remaining puller element (6,6b,6b',6b'',6b'''') being flush with the end of the sealing strand.

Description

[0001] The invention relates to a sealing strand with a flexible, longitudinally extending pull-off element, which forms an aid for the assembly of the sealing strand and which, in a pull-off process, transfers a sealing lip of the assembled sealing strand into its intended position.

[0002] A sealing strand of this type with a puller element as an assembly aid is described, for example, in DE 690 19 288 Part 2. The puller element consists of a cord with a rubber coating, which is produced by co-extrusion with the sealing strand, enclosing the cord. By pulling the element off the sealing strand, a sealing lip is moved from a folded position into its intended position, where it bridges a sealing gap. The puller element extends beyond one end of the strand. Such a puller element is easier to grip during assembly of the sealing strand. Furthermore, it can better fulfill its function, e.g., moving a sealing lip into its intended position.

[0003] From EP 1 564 452 A1 and DE 603 ​​06 403 T2, it is known to connect a protective film extending in the longitudinal direction of the sealing strand and covering an adhesive surface of a sealing strand to a gripping lever that projects beyond one end of the sealing strand. The protective film, which must be removed before the sealing strand is installed, can thus be easily peeled off the sealing strand. From JP 2006-69 253 A, a sealing strand with an extruded cord is known, wherein the cord projects from one end of the sealing strand and a small plate is attached to the free end of the cord to facilitate gripping.

[0004] The invention is based on the objective of creating a new sealing strand of the type mentioned at the outset, which is particularly easy to manufacture.

[0005] The sealing strand according to the invention, which solves this problem, is characterized in that the end piece of the puller element projecting beyond the strand end is connected to the remaining puller element at a connection point, the remaining puller element being flush with the end of the sealing strand. Advantageously, in this case, the sealing strand with the remaining puller element can be cut from a continuously manufactured sealing strand, the remaining puller element being flush with the end of the sealing strand.

[0006] The protruding end piece can be knotted, glued, welded, spliced ​​or / and crimped to the rest of the sealing strand.

[0007] At the connection point, the remaining puller element can remain connected to the sealing strand, or an end section of the sealing strand can be detached lengthwise, so that there is space, for example, for a knot.

[0008] In one embodiment of the invention, the sealing strand forms part of a seal comprising at least one such sealing strand.

[0009] In particular, the pull-off elements of several sealing strands can be connected to form a single continuous pull-off element by their protruding end pieces, e.g. in an embodiment in which the sealing strands are connected to form a ring seal.

[0010] In particular, the sealing strands can be connected to each other via molded parts, which, for example, form corners of the ring seal and may also have a sealing lip.

[0011] The end piece can be detachably connected to the molded part or positioned under tension against the molded part, so that the continuous puller element is also secured in its position on the molded part and can fulfill its function as an assembly aid for the molded part as well.

[0012] In a further embodiment of the invention, the end piece has a handle element, in particular a loop.

[0013] The invention is further explained below with reference to exemplary embodiments and the accompanying drawings relating to these exemplary embodiments. The drawings show: Fig. 1 a sealing strand with a pull-off element according to the state of the art in a cross-section, Fig. 2 a first embodiment of a sealing string according to the invention in schematic representation, Fig. 3 a second embodiment of a sealing string according to the invention in schematic representation, Fig. 4 a ring seal which has sealing strands according to the invention, and Fig. 5 a detailed representation of the ring seal of Fig. 4.

[0014] A sealing strip for sealing a gap in a vehicle door has a U-shaped mounting section 1 with a metallic reinforcing insert 2. The mounting section 1 is connected to sealing lips 3 and 4 and a tubular sealing section 5.

[0015] In the embodiment in question, the sealing lip 3 has a pull-off element 6 extending in the longitudinal direction of the strand. The pull-off element 6 consists of a rubber sheath 7 co-extruded with the sealing lip 3 and a cord 8 embedded in the rubber sheath 7.

[0016] During the assembly of the sealing string, the puller element 6 is pulled away from the sealing lip 3 in the direction of arrow 25, continuously releasing the sealing lip 3 into the Fig. 1. Position the cord in the area indicated by the dotted lines, where it overlaps a gap to be sealed. During the installation process, the soft rubber sheathing protects adjacent painted surfaces from damage caused by the cord.

[0017] The in Fig. The sealing strand shown in Figure 1 is cut from a continuous strand (including the puller element) produced in Figure 6. The end of the puller element is therefore flush with the end of the strand. Consequently, it is difficult to grasp the end of the puller element during the aforementioned assembly process. If a more easily accessible end section of the puller element is detached before assembly, additional effort is required to reposition, for example, a sealing lip at the point of contact where the puller element can no longer be used as an assembly aid.

[0018] Fig. Figure 2 schematically shows an end 9 of a sealing strand connected to a puller element 6, the puller element 6 projecting beyond the end 9 of the sealing strand with an end piece 10. A loop 11, indicated by dashed lines, may be formed at the end piece 10.

[0019] In the embodiment in question, the protruding end piece 10 is welded to the remaining puller element 6 along a seam 12. The remaining puller element 6, which is connected longitudinally to the sealing strand, terminates flush with the strand end 9 at 13.

[0020] Advantageously, during the assembly of the sealing strip, the protruding end piece 10 can be used as a handle for pulling off the element 6. Due to its length, the weld seam 12 has sufficient tensile strength for this process.

[0021] Element 6 can, for example, be formed by a strand of plastic, the plastic being soft enough not to damage painted surfaces when peeled off. As in the embodiment of Fig. 1. The plastic strand could be provided with a rubber coating. Regardless of the rubber coating, the plastic strand can be co-extruded with the sealing strand.

[0022] At the in Fig. In the embodiment shown in Figure 3, an end piece 10a projecting beyond the end 9a of a sealing strand is not welded to the remaining part of a puller element 6a but is connected via a metallic clamping element 14, wherein, to make the connection, an end section 15 of the puller element 6a is detached from the sealing strand to create space for the connection.

[0023] One in Fig. 4 and Fig. The ring seal shown in Figure 5 comprises four sealing strands 16, 17, 18, and 19, wherein the sealing strands 16 to 18 are connected to one another via frame corners formed by molded parts 20, 21, 22, and 23. Each of the sealing strands 16 to 19 has a pull-off element 6b, 6b', 6b'', or 6b''' connected to it longitudinally. By means of end pieces 10b, 10b', and 10b'' that project from one end of each strand, the pull-off elements 6b, 6b', 6b'', and 6b''' are connected to one another to form a common continuous pull-off element 24. A loop 11b is formed at one end piece 10b''' that projects from the sealing strand 19.

[0024] Clamping elements, like those used to connect the end pieces to the other pull-off elements, are used to join the individual sealing strands, each comprising an end piece. These clamping elements are available in Fig. 5 designated by 14b and 14b', wherein the clamping element 14b' is connected to a detached end section 15b' of the pull-off element 6b'.

Claims

[1] Sealing strand with a flexible, longitudinally extending pull-off element (6, 6b, 6b', 6b'', 6b''') which forms an aid for the assembly of the sealing strand, which in a pull-off process transfers a sealing lip (3) of the assembled sealing strand into its intended position, wherein the pull-off element (6) consists of a rubber sheath (7) co-extruded with the sealing lip (3) and a cord (8) embedded in the rubber sheath (7) and projects beyond the strand end (9) at at least one strand end (9). characterized by , that an end piece (10,10b,10b',10b'',10b''') of the puller element (6,6b,6b',6b'',6b''') extending beyond the end of the strand (9) is connected at a connection point (12,14) to the remaining puller element (6,6b,6b',6b'',6b''') wherein the remaining puller element (6,6b,6b',6b'',6b''') is flush with the end of the sealing strand. [2] Sealing string according to claim 1, characterized by, that the puller element (6,6b,6b',6b'',6b'') is detachably connected to the sealing strand by tearing. [3] Sealing string according to claim 1 or 2, characterized by , that the protruding end piece (10,10b,10b',10b'',10b''') is knotted, glued, welded, spliced ​​or / and crimped to the remaining puller element (6,6b,6b',6b'',6b'''). [4] Sealing string according to one of claims 1 to 3, characterized by , that the connection point (12,14) is formed on an end section (15) of the remaining pull-off element (6,6b,6b',6b'',6b'') that is connected to or detached from the sealing strand. [5] Sealing string according to any one of claims 1 to 4, characterized by , that the sealing strand forms part of a seal comprising at least one such sealing strand (16,17,18,19). [6] Sealing string according to claim 5, characterized by, that pull-off elements (6b,6b',6b'',6b''') of several sealing strands (16,17,18,19) are connected by protruding end pieces (10b,10b',10b'',10b''') to form a single continuous pull-off element (24). [7] Sealing string according to claim 6, characterized by , that the sealing strands (16,17,18,19) are connected to form a ring seal. [8] Sealing string according to claim 7, characterized by , that the sealing strands (16,17,18,19) are connected to each other via shaped parts (20,21,22,23) which form, in particular, corners of the ring seal. [9] Sealing string according to claim 8, characterized by , that the end piece (10b,10b',10b'',10b''') is detachably connected to the relevant molded part (20, 21,22,23) and / or is under tension against the molded part (20, 21,22,23). [10] Sealing string according to any one of claims 1 to 9, characterized by , that the end piece (10,10b''') has a handle element, in particular a loop (11,11b).

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