Closure element for a fire-protection sleeve

Abstract

A closure element for a fire-protection sleeve is disclosed. The closure element has a body, a connecting element, and at least one locking element for a form-fitting connection to an intumescent strip. The body and the connecting element are designed in one piece.

Claims

1. A closure element for a fire-protection sleeve, comprising: a body; a connecting element, wherein the body and the connecting element are formed in one piece; and a locking element, wherein the locking element is disposed on the body; wherein the body has a flexible strap extending perpendicularly from an edge of the body and partially enclosing an intumescent strip.

2. The closure element according to claim 1, wherein an end of the locking element forms an acute angle of a maximum of 90.

3. The closure element according to claim 1, wherein the locking element protrudes approximately at a right angle from the body.

4. The closure element according to claim 1, wherein the locking element is positioned on the body in relation to a direction of tension of the closure element.

5. The closure element according to claim 1, wherein the locking element is formed in one piece with the body.

6. The closure element according to claim 1, wherein the locking element is bent out of the body.

7. The closure element according to claim 1, wherein the locking element is cut out of the body.

8. The closure element according to claim 1, wherein the locking element is attached to the body.

9. The closure element according to claim 1, wherein the body has a fastening section, wherein the closure element is fastenable on a wall with the fastening section.

10. The closure element according to claim 9, wherein the fastening section is connected to the body by an intended bending location.

11. The closure element according to claim 1, further comprising an offset piece that is disposed on an end of the body and wherein the offset piece is a positioning aid when mounting of the closure element on an intumescent strip.

12. The closure element according to claim 1, wherein the body has a spring element and wherein the locking element is disposed on the spring element.

13. The closure element according to claim 12, further comprising a blocking element wherein, in a locking position, the blocking element acts on the spring element in a locking direction and prevents recoil of the spring element.

14. The closure element according to claim 1, wherein the closure element has a hermaphroditic design such that the connecting element is engageable with a connecting element of a second closure element.

15. A fire-protection element, comprising: an intumescent strip; and a first and a second closure element according to claim 1, wherein the connecting element of the first closure element is engaged with the connecting element of the second closure element, and wherein the locking element of the first closure element and the locking element of the second closure element engage in the intumescent strip.

16. A closure element for a fire-protection sleeve, comprising: a body; a connecting element, wherein the body and the connecting element are formed in one piece; a locking element, wherein the locking element is disposed on the body; wherein the body has a spring element and wherein the locking element is disposed on the spring element; and a blocking element wherein, in a locking position, the blocking element acts on the spring element in a locking direction and prevents recoil of the spring element; wherein the body has guide rails on a side facing away from the locking element and wherein the blocking element is movable in the guide rails.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a perspective view of a fire-protection element according to the invention,

(2) FIG. 2 shows a perspective view of a closure element according to the invention for a fire-protection element according to FIG. 1,

(3) FIG. 3a shows a perspective view of a simplified closure element before mounting on an intumescent strip,

(4) FIG. 3b shows the closure element from FIG. 3a during mounting,

(5) FIG. 3c shows the closure element from FIGS. 3a and 3b in a locking position,

(6) FIG. 4a shows a sectional view of a second embodiment of the closure element according to the invention before mounting,

(7) FIG. 4b shows the closure element from FIG. 4a during mounting,

(8) FIG. 4c shows the closure element from FIGS. 4a and 4b in a locking position,

(9) FIG. 5a shows a perspective view of the closure element according to another embodiment before mounting,

(10) FIG. 5b shows the closure element from FIG. 5a during mounting, and

(11) FIG. 5c shows the closure element from FIGS. 5a and 5b in a locking position.

DETAILED DESCRIPTION OF THE DRAWINGS

(12) FIG. 1 shows a fire-protection element 10, which is arranged around a pipe 12. The fire-protection element 10 has an intumescent strip 14. A closure element 16 is arranged on each end of the intumescent strip 14. Each closure element 16 has a connecting element 18. With the help of the connecting elements 18, the closure elements 16 arranged at the ends of the intumescent strip 14 can be joined together in a force-locking manner. The two closure elements 16 thus form a two-part closure 20, as in the case of a belt having two closures.

(13) The exact design of the closure element 16 and its mounting on the intumescent strip 14 will now be explained in detail on the basis of the following figures.

(14) FIG. 2 shows a perspective view of the closure element 16, which has a body 22. Locking elements 24 punched out of the body 22, protruding at a right angle away from the body 22 and fastening the closure element 16 through engagement and/or hooking on the intumescent strip 14, are arranged on the body 22.

(15) In addition, a connecting element 18, which is designed in the form of a strap closure, is arranged on the body 22. The connecting element 18 can cooperate with another connecting element 18 of a second closure element 16, as shown in FIG. 1. The connecting element 18 is arranged on a section, which is arranged behind an offset piece 26, which serves as a positioning aid in mounting the closure element 16 on the intumescent strip 14.

(16) In addition straps 28, which are flexible and can function as guide elements in mounting, are arranged on the body 22.

(17) The body 22 also has a fastening section 30, which is connected to the body 22 by means of an intended bending point 32. The fastening section 30 serves to fasten and/or mount the closure element 16 on a wall. Thanks to the intended bending point 32, the fastening section 30 can be bent around the body 22 at an angle, so that the closure element 16 can be adjusted to different pipe diameters.

(18) On the basis of FIGS. 3a to 3c, mounting of the closure element 16 according to the invention on the intumescent strip 14 is explained.

(19) FIG. 3a shows a simplified embodiment of the closure element 16, wherein the same reference numerals are used for the features known from the previous figures.

(20) In addition to the closure element 16, FIG. 3b also shows the intumescent strip 14, which is situated between the two straps 28 of the closure element 16 during the mounting. The straps 28 serve as the pivot point in mounting the closure element 16 on the intumescent strip 14. The closure element 16 is connected to the intumescent strip 14 by being pivoted in the direction of the arrow. The locking elements 24 then engage in the intumescent strips 14 and become hooked in it, thus establishing a form-fitting engagement of the locking elements 24 with the intumescent strip 14.

(21) In FIG. 3c, the closure element 16 is connected to the intumescent strip 14.

(22) The connecting element 18, which is designed as a strap closure in the embodiment shown here, is arranged at the end, where the offset piece 26 is located. The connecting element 18 may be brought into engagement with another connecting element 18 on another closure element 16. This is shown in principle in FIG. 1.

(23) FIGS. 4a to 4c show the closure element 16 according to another embodiment.

(24) The closure element 16 has a body 22, on which two straps 28 are arranged. The one strap 28 serves as a positioning aid, while the other strap 28 functions as a securing element after being mounted. Furthermore, acute locking elements 24 are arranged on the body 22, these locking elements being positioned at an angle to the body 22. The locking elements 24 are pressed into the intumescent strip 14, so that the closure element 16 is connected to the intumescent strip 14.

(25) The closure element 16 of this embodiment is not mounted centrally, as was the case in FIGS. 3a to 3c, but instead is mounted at the side by means of a lever process. The closure element 16 is therefore in contact with one edge of the intumescent strip 14 thanks to one of its straps 28 and is mounted on a side thereof. In the embodiment shown here, the locking elements 24 are positioned at the angle to body 22, so the locking elements 24 can engage better and/or more easily in the intumescent strip 14.

(26) The direction arrow shown in FIG. 4b indicates the direction, according to which the closure element 16 is moved around the intumescent strip 14 and is thereby secured. One of the straps 28 is in contact with the intumescent strip 14 and thus defines a point about which the closure element 16 is pivoted. Furthermore, it is clear from FIG. 4b that the locking elements 24 engage in the intumescent strip 14 at a right angle, although the body 22 of the closure element 16 is tilted at an angle to the intumescent strip 14. This is ensured by positioning the locking elements 24 at the angle to the body 22, so that the locking elements 24 do not stand exactly perpendicular to the body 22.

(27) FIG. 4c shows the closure element 16 in a form-fitting connection with the intumescent strip 14 because all the locking elements 24 are in form-fitting connection with the intumescent strip 14. The bottom strap 28 of the closure element 16 already engages around the intumescent strip 14 so that the top strap 28 must still be bent around the intumescent strip 14 in the direction of the arrow. Then the closure element 16 is connected in a form-fitting manner to the intumescent strip 14 by the locking elements 24 and is additionally secured by the straps 28 on the intumescent strip 14.

(28) FIGS. 5a to 5c show another embodiment of the closure element 16 according to the invention as well as its mounting on the intumescent strip 14.

(29) The closure element 16 of this embodiment also has, in addition to the features already known, a spring element 34 on which the locking elements 24 are arranged. In this embodiment, the spring element 34 is designed so that it springs away from the locking position when in the starting position shown in FIG. 5a, so that the spring element 34 does not lie in a plane with the body 22. Therefore, the locking elements 24 cannot come in contact with the intumescent strip 14 in the initial condition, i.e., during mounting. The locking elements 24 together with the spring element 34 must be actively pressed in the locking direction against the spring pressure of the spring element 34.

(30) Furthermore, the body 22 of the closure element 16 also has guide rails 36, which serve to guide a blocking element 38. The blocking element 38 has a stop 40 as well as an additional securing element 42, which is provided in a recess 44 of the blocking element 38. The function of the blocking element 38 will be explained later.

(31) The straps 28 arranged on the closure element 16 here again serve as guide elements for the intumescent strip 14 and the closure element 16 is already shown in its end position in FIG. 5b because the offset piece 26 is already in contact with the end of the intumescent strip 14.

(32) However, the locking elements 24 are not yet engaged with the intumescent strip 14 in FIG. 5b. To attach the closure element 16 to the intumescent strip 14, the spring element 34 together with the locking elements 24 must be pressed by hand into the intumescent strip 14. In addition, the locking position can be secured by means of the blocking element 38, so that the latter is shifted along the guide rails 36 until the stop 40 is in contact with the offset piece 26. This ensures that the spring element 34 does not spring back.

(33) Alternatively, however, the blocking element 38 may also press the locking elements 24 into the intumescent strip 14. To do so, the blocking element 38 is pushed along the guide rails 36, so that the blocking element 38 acts upon the spring element 34 in the locking direction, and thus the locking elements 24 are pressed into the intumescent strip 14.

(34) The final locking position is shown in FIG. 5c, in which the blocking element 38 with its stop 40 is in contact with the offset piece 26 of the closure element 16 and thus the spring element 34 together with the locking elements 24 is acted upon and/or secured in the locking direction.

(35) The blocking element 38 itself may also be secured mechanically. To do so, the securing element 42 is provided on the blocking element 38, which is provided in the recess 44 in the blocking element 38 and cooperates with an edge 46 of the body 22 to secure the blocking element 38 mechanically.

(36) As in the preceding embodiments, the closure element 16 has a connecting element 18 which is in contact with the end of the intumescent strip 14 and can be connected to another connecting element 18 on another closure element 16.

(37) Alternatively, in one embodiment not shown here, the spring element 34 may be designed so that it forms a plane with the body 22 in the starting position. The locking elements 24 are arranged on the spring element 34 and are set at a large angle to it, preferably greater than 45 to the normal of the spring element 34.

(38) This embodiment ensures that when the closure element 16 is pushed onto the intumescent strip 14, the locking elements 24 will not engage directly with the intumescent strip 14. In mounting of the closure element 16 on the intumescent strip 14, the locking elements 24 instead slide over the intumescent strip 14 because of the recoiling spring element 34 and the offset locking elements 24.

(39) For the final fixation of the closure element 16 on the intumescent strip 14, the closure element 16 can be pulled briefly in a direction opposite the direction of mounting, so that the locking elements 24, which are positioned in relation to the body 22, are engaged in the intumescent strip 14. Alternatively or additionally, they are actively pressed into the intumescent strip 14 against the spring force of the spring element 34. The blocking element 38 then serves as an additional means of securing the spring element 34 and secures it together with the locking elements 24, so that securing means are not absolutely necessary in this embodiment.

(40) According to the invention, a fire-protection element 10 that is simple to use is created because only the intumescent strip 14 need be cut to size, the closure elements 16 must be attached to both ends of the intumescent strip 14, and then the two closure elements 16 are attached to one another.