PRESS SEAL WITH AN ELASTOMER BODY AND A TENSIONING BOLT

Abstract

The present invention relates to a compression seal (1) for insertion into and sealing of an opening (2), having an elastomer body (5) and a tensioning bolt (7), wherein the elastomer body (5) can be deformed by tightening the tensioning bolt (7) and can thus be made to press in a sealing manner in directions perpendicular to a longitudinal axis (14) of the tensioning bolt (7), and wherein a tensioning element (8) having oblique faces (9a, b) set at an angle to one another is provided for the purpose of tensioning the elastomer body (5) and is braced between the tensioning bolt (7) and the elastomer body (5) such that, by displacement in its tapering direction (11) or an opposite direction, it can be brought into a tensioning state and thus the tensioning bolt (7) can be tightened and the elastomer body (5) can be deformed.

Claims

1. A press seal (1) for inserting into an opening (2) and sealing the latter, having an elastomer body (5) and a tensioning bolt (7), wherein the elastomer body (5) is deformable by tightening the tensioning bolt (7) such that the elastomer body (5) can be pressed into a sealing contact in directions perpendicular to a longitudinal axis (14) of the tensioning bolt (7), characterized in that the press seal (1) comprises a tensioning element (8) with inclined faces (9a, b) which are inclined towards one another, the tensioning element (8) being arranged or arrangeable at the tensioning bolt (7) such that a tapering direction (11) of the tensioning element (8), along which the inclined faces (9a, b) converge, forms an angle with the tensioning bolt longitudinal axis (14), wherein the tensioning element (8) rests against the tensioning bolt (7) and the elastomer body (5) such that the tensioning element (8) can be brought into a tensioned state by displacing it in the tapering direction (11) or in a direction opposite thereto, whereby the tensioning bolt (7) can be tightened and the elastomer body (5) can be deformed.

2. The press seal (1) according to claim 1, wherein the tensioning element (8) is a wedge element, the inclined faces (9a, b) being outer wedge faces of the wedge element, wherein the wedge element can be brought into the tensioned state by a displacement in the tapering direction (11).

3. The press seal (1) according to claim 2, wherein a recess (10) intersects the tensioning bolt (7), preferably a trough-hole, the wedge element being arranged or arrangeable in the recess (10) such that the wedge element rests against a bearing surface (13) of the tensioning bolt (7) with one (9a) of its outer wedge faces (9a, b), which are inclined towards one another, the bearing surface (13) defining the recess (10) with respect to a direction, which lies parallel to the tensioning bolt longitudinal axis (14) and points away from the elastomer body (5).

4. The press seal (1) according to claim 1, wherein the tensioning bolt (7) is a flat body, which is preferably worked out of a flat material.

5. The press seal (1) according to claim 1, wherein the inclined faces (9a, b) of the tensioning element (8), which are inclined towards one another, form an angle with each other of at least 2 and not more than 45.

6. The press seal (1) according to claim 1, wherein the tensioning bolt (7) extends into the elastomer body (5), preferably intersecting the latter, the press seal (1) being adapted such that the elastomer body (5) is compressed in the direction of the tensioning bolt longitudinal axis (14) and, consequently, brought into the sealing contact in the directions perpendicular thereto when the tensioning bolt (7) is tightened.

7. The press seal (1) according to claim 2, wherein the wedge element is arranged at a first front face of the elastomer body (5) together with a first press body (6a) of the press seal (1), wherein the first press body (6a) is arranged between the wedge element and the elastomer body (5) with respect to a direction parallel to the tensioning bolt longitudinal axis (14), the first press body (6a) being pressed against the elastomer body (5) by the wedge element when the latter is displaced in the tapering direction (11).

8. The press seal (1) according to claim 7, wherein the wedge element directly contacts, with that one of its outer wedge faces inclined towards one another, which faces the elastomer body (5), a contact surface (12) of the first press body (1).

9. The press seal (1) according to claim 7, wherein a second press body (6b) is arranged at a second front face of the elastomer body (5), which lies opposite to a first front face of the elastomer body (5) at which the wedge element is arranged, the tensioning bolt (7) interacting with the second press body (6b) for compressing the elastomer body (5).

10. The press seal (1) according to claim 3, wherein the recess (10) in the tensioning bolt (7) extends into the elastomer body (5) in a direction parallel to the tensioning bolt longitudinal axis (14), at least in an untightened state of the tensioning bolt (7).

11. The press seal (1) according to claim 1, wherein the tensioning element (8) is held captive at the remaining press seal (1), preferably at the tensioning bolt (7).

12. The press seal (1) according to claim 1, further comprising a locking member, the tensioning element (8) being lockable in the tensioned state by the locking member, preferably by a locking pin in combination with a hole in the tensioning element (8), wherein a displaceability of the tensioning element (8) is lockable by inserting the locking pin into the hole.

13. The press seal (1) according to claim 1, wherein the elastomer body (5) is adapted as a blind closure.

14. A method of using a press seal (1) according to claim 1 comprising the steps of: inserting said press seal (1) into an opening (2); and sealing said opening (2) by tightening the tensioning bolt (7) by displacing the tensioning element (8) arranged at the tensioning bolt (7) in the tapering direction (11) or in the direction opposite thereto.

15. The method of claim 14 wherein the tensioning element (8) is displaced into the tensioned state by a force applied by striking, preferably by a striking tool.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In detail,

[0044] FIG. 1 shows a press seal according to the invention with a wedge element in the untightened state;

[0045] FIG. 2 shows a press seal according to FIG. 1 with the wedge element in the tensioned state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0046] FIG. 1 shows a press seal 1 which is inserted into an opening 2 in a wall 3, a wall 3 made of concrete in this example. The opening 2 can be formed as a core drilling or it can be kept free when the wall 3 is casted from concrete, anyhow the wall 3 itself forms a soffit 4 which defines the opening 2. The press seal 1 is adapted as a blind closure, as such it seals the opening 2.

[0047] The press seal 1 comprises an elastomer body 5 which is compressed axially for the sealing and consequently contacts the soffit 4 in directions perpendicular to the axial direction. For this purpose, a respective press body 6a,b formed as a press plate is arranged at each of the two front faces of the elastomer body 5, wherein the press bodies 6a,b can be moved axially towards each other by tightening the tensioning bolt 7, for deforming the elastomer body 5 in between axially. In this example, a tensioning bolt 7 having to a large extent a rotationally symmetrical design is shown; likewise, the tensioning bolt 7 could be a flat body worked out of a flat material.

[0048] According to the invention, a tensioning element 8 is provided for tightening the tensioning bolt 7, which comprises inclined faces 9a,b which are inclined towards one another. In this example, the tensioning element 8 is a wedge element, and the inclined faces 9a,b are outer wedge faces. The wedge element is arranged in a recess 10 in the tensioning bolt 7, a through hole in this example (in this side view, the recess 10 is not visible, it extends vertically through the tensioning bolt 7 in this figure).

[0049] The two inclined faces 9a,b of the wedge element 8 converge along the tapering direction 11. The tensioning element 8 formed as a wedge element can be brought into the tensioned state by a displacement in the tapering direction 11 (with a predominant directional component parallel to the tapering direction 11). Thereby, a contact surface 12 of the first press body 6a arranged on the left in the figure, which is contacted by the inclined face 9b of the wedge element facing towards the elastomer body 5, and a contact surface 13 of the tensioning bolt 7, which is contacted by the other inclined face 9a of the wedge element, are moved away from each other axially. Accordingly, the two press bodies 6a,b are moved towards each other axially, namely along the tensioning bolt longitudinal axis 14, and the elastomer body 5 is compressed axially.

[0050] FIG. 2 shows the press seal 1 in the tensioned state, wherein the tensioning element 8 is already displaced and the elastomer body 5 is compressed axially and widened perpendicularly thereto. In this tensioned state, the wedge element could be locked by a locking pin (not shown), which could be inserted into a hole arranged slightly below the tensioning bolt 7 in FIG. 2. In case of the wedge element shown here, a broad side 21 and a narrow side 22 extend basically perpendicularly to the inclined face 9b which faces towards the elastomer body 5. For bringing the wedge element into the tensioned state, the broad side 21 is hit by a hammer or another striking tool. For moving the wedge element from the tensioned state shown in FIG. 2 into an untensioned state, the striking force is applied onto the narrow side 22.

[0051] The tensioning bolt 7 and also the wedge element are made of steel. The force generated by the tensioning bolt 7 and the wedge element is transferred onto the elastomer body 5 via the press bodies 6a,b which are also made of metal. At its end assigned to the second press body 6b, the tensioning bolt 6 has a broadened tensioning bolt head 23 for engaging at the second press body 6b and moving it axially. The first press body 6a is intersected by the tensioning bolt 7, it is guided axially displaceable at the latter.