Fire protection securing device for securing a door actuator

Abstract

A fire protection securing apparatus for securing a door actuator includes a retaining plate, designed for being secured to an assembly surface, in particular door, frame or wall, wherein, perpendicular to the retaining plate, an assembly axis is defined. The fire protection securing apparatus further includes an assembly plate which is secured to the retaining plate and which is designed for receiving the door actuator, and at least one closed reaction chamber arranged between the retaining plate and the assembly plate. The apparatus also includes a drive element of thermally intumescent material which is arranged in the reaction chamber and which is designed to push the assembly plate away from the retaining plate upon thermal activation.

Claims

1. A fire protection securing apparatus for securing a door actuator, the fire protection securing apparatus comprising: a retaining plate configured for being secured to an assembly surface, wherein, perpendicular to the retaining plate, an assembly axis is defined, an assembly plate which is secured to the retaining plate configured for receiving the door actuator, a closed reaction chamber arranged between the retaining plate and the assembly plate, and a drive element of thermally intumescent material, which is arranged in the closed reaction chamber and which is configured to push the assembly plate away from the retaining plate upon thermal activation, wherein the drive element comprises only the thermally intumescent material, and only the thermally intumescent material is arranged in the closed reaction chamber.

2. The fire protection securing apparatus according to claim 1, wherein the closed reaction chamber is formed by a pocket in the assembly plate open towards the retaining plate and/or by a pocket in the retaining plate open towards the assembly plate.

3. The fire protection securing apparatus according to claim 1, wherein the closed reaction chamber has a depth parallel to the assembly axis, wherein at least 50% of the depth of the closed reaction chamber is positioned in the assembly plate.

4. The fire protection securing apparatus according to claim 1, wherein the retaining plate and the assembly plate bear directly against one another.

5. The fire protection securing apparatus according to claim 1, wherein the retaining plate and the assembly plate are connected to one another by at least one connecting element.

6. The fire protection securing apparatus according to claim 1, wherein the retaining plate has first securing points, for screwing to the assembly surface.

7. The fire protection securing apparatus according to claim 6, wherein the assembly plate has recesses, through which the first securing points of the retaining plate are accessible.

8. The fire protection securing apparatus according to claim 1, wherein the assembly plate has second securing points, for screwing on the door actuator.

9. The fire protection securing apparatus according to claim 1, wherein the retaining plate extends perpendicular to the assembly axis over a first cross-sectional area and wherein the assembly plate extends perpendicular to the assembly axis over a second cross-sectional area, wherein a ratio of the first cross-sectional area to the second cross-sectional area is between 0.7 and 1.3.

10. The fire protection securing apparatus according to claim 1, wherein a thickness of the retaining plate defined parallel to the assembly axis is, at the thickest point, between 1 mm and 20 mm, and/or wherein a thickness of the assembly plate defined parallel to the assembly axis is, at the thickest point, between 1 mm and 30 mm.

11. The fire protection securing apparatus according to claim 1, wherein the drive element extends over an entire cross-sectional area of the closed reaction chamber defined perpendicular to the assembly axis.

12. An arrangement comprising a door actuator and a fire protection securing apparatus comprising a retaining plate configured for being secured to an assembly surface, wherein, perpendicular to the retaining plate, an assembly axis is defined, an assembly plate which is secured to the retaining plate configured for receiving the door actuator, a closed reaction chamber arranged between retaining plate and assembly plate, and a drive element of thermally intumescent material, which is arranged in the closed reaction chamber and which is configured to push the assembly plate away from the retaining plate upon thermal activation, wherein the drive element comprises only the thermally intumescent material, and only the thermally intumescent material is arranged in the closed reaction chamber, wherein the door actuator is configured to be arranged on the assembly plate.

13. The arrangement according to claim 12, comprising a covering, which covers the door actuator and which is configured for being secured directly to the assembly plate.

14. A door arrangement, comprising an assembly surface, and an arrangement according to claim 13, wherein the retaining plate is configured for being secured to the assembly surface.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The disclosure will now be explained further on the basis of an exemplary embodiment, in which is shown:

(2) FIG. 1 a door arrangement according to the disclosure with an arrangement according to the disclosure and a fire protection securing apparatus according to the disclosure in accordance with an exemplary embodiment,

(3) FIG. 2 the arrangement according to the disclosure with a fire protection securing apparatus according to the disclosure in accordance with the exemplary embodiment,

(4) FIG. 3 the arrangement according to the disclosure with a fire protection securing apparatus according to the disclosure without a covering,

(5) FIG. 4 an exploded illustration of the fire protection securing apparatus according to the disclosure in accordance with the exemplary embodiment,

(6) FIG. 5 a perspective view of the fire protection securing apparatus according to the disclosure in accordance with the exemplary embodiment,

(7) FIG. 6 the section A-A marked in FIG. 5, and

(8) FIG. 7 the section B-B marked in FIG. 5.

DETAILED DESCRIPTION OF THE DRAWINGS

(9) An exemplary embodiment of the disclosure is explained below. Unless otherwise mentioned in detail, reference is always made to all figures.

(10) FIG. 1 shows a door arrangement 200 with an assembly surface 201. In the exemplary embodiment shown, the assembly surface 201 is formed by the door, in particular the door leaf. Perpendicular to this assembly surface 201, an assembly axis 2 is defined.

(11) An arrangement 100 is part of the door arrangement 200. The arrangement 100 in turn comprises a door actuator 101 and a covering 104. The door actuator 101 without covering 104 is illustrated in FIG. 3. The door actuator 101 in the exemplary embodiment is a hydraulic door closer. The door actuator 101 has a driven axis 102. The door actuator 101 can be connected, for example to the frame, by means of a linkage, via this driven axis 102.

(12) A fire protection securing apparatus 1 is another part of the arrangement 100.

(13) FIG. 3 shows the arrangement 100 without the covering 104. The housing of the door actuator 101, in which four door actuator screw holes 103 are designed, can be seen. The door actuator 101 is screwed to the fire protection securing apparatus 1, in particular to its assembly plate 4, via these door actuator screw holes 103. These door actuator screw holes 103 extend parallel to the assembly axis 2.

(14) FIG. 2 shows the arrangement 100 from the rear side. A retaining plate 3 of the fire protection securing apparatus 1 can be seen. The surface of the retaining plate 3 illustrated here is to be turned towards the assembly surface 201.

(15) The precise design of the fire protection securing apparatus 1 can be found in the exploded illustration in FIG. 4 and the isometric illustration in FIG. 5 with the two sections in FIGS. 6 and 7.

(16) The fire protection securing apparatus 1 is formed by two plates bearing against one another and secured to one another, namely the retaining plate 3 and the assembly plate 4. Four reaction chambers 5 are designed between retaining plate 3 and assembly plate 4. In the exemplary embodiment shown, the respective reaction chamber 5 is formed by a pocket in the assembly plate 4. The respective pocket is fully sealed by placing the retaining plate 3 thereon such that a closed reaction chamber 5 results.

(17) The assembly plate 4 has a contact surface 6 around the reaction chambers 5 or pockets. The assembly plate 4 contacts the retaining plate 3 with this contact surface 6.

(18) A drive element 7 of thermally intumescent material is located in each reaction chamber 5. In the exemplary embodiment shown, a layer of this material is laid for each reaction chamber 5.

(19) The retaining plate 3 is connected to the assembly plate 4 by means of four connecting elements 8, here designed as countersunk screws. To this end, the retaining plate 3 has retaining plate screw holes 9, through which the connecting elements 8 are inserted. Aligned therewith, connecting element receptacles 14 in the form of holes with inner thread are provided in the assembly plate 4.

(20) Four first securing points 10 in the form of holes for receiving screw heads are provided for securing the retaining plate 3 to the assembly surface 201. In particular, FIGS. 5 and 6 illustrate that the first securing points 10 in the retaining plate 3 align with associated recesses 11 in the assembly plate 4. These recesses 11 enable accessibility to the first securing points 10 and insertion of screws without these screws incorporating the assembly plate 4 into this securing process.

(21) Four second securing points 12 in the form of holes with inner thread are provided for securing the door actuator 101 to the assembly plate 4. These securing points 12 align with the door actuator screw holes 103 (see FIG. 3).

(22) The assembly plate 4 has on its circumference a form-locking contour 13, which is designed to secure the covering 104 to the assembly plate 4. As in particular FIG. 2 illustrates, the covering 104 surrounds the assembly plate 4 such that only the retaining plate 3 is visible externally.

(23) FIG. 7 shows a depth 20 of the reaction chambers 5, a thickness 21 of the retaining plate 3 and a thickness 22 of the assembly plate 4. Advantageous dimensions of this depth or of these thicknesses are defined in the general part of the description.