Fastening device for chimney caps

Abstract

Fastening device for chimney covers, with a ring surrounding the chimney on its outer circumference with support elements, wherein the cover is designed as at least one plate arranged on the ring and attached at a distance from the top edge of the chimney via support elements, which covers the chimney opening in the closed state and exposes it in the open state, wherein, as ring, a clamping ring (2) is provided, which consists of four parts enclosing right angles, each having angled projections (2a) which can be connected to each other by means of a connecting element (9) in the form of a clamping bolt or a threaded screw which engages in corresponding bores of the projections (2a), so that the clamping ring (2) clamps around the outer circumference of the chimney and can be variably fastened in its size.

Description

[0001] The invention relates to a fastening device for chimney covers with a ring surrounding the chimney on its outer circumference with support elements, wherein the cover is designed as at least one plate arranged on the ring and attached at a distance from the top edge of the chimney via support elements, which covers the chimney opening in the closed state and exposes it in the open state.

[0002] According to the prior art, a variety of protective covers made of various metals, in the form of hoods or end plates, are known for chimney protection. For example, chimney covers with multiple spacers for attaching an end plate are known according to DE 20 2005 015 277 U1 or DE 296 16 960 U1. These prior art covers are firmly connected to the chimney via spacers and fastening screws using dowels positioned in drilled holes.

[0003] The closest prior art is DE 35 05 065 A1, which shows a loosely resting perimeter ring on the top edge of the chimney in the form of a frame consisting of interlocking corner pieces. According to this document, movement of the corner pieces on the chimney is only secured by directly riveting, screwing, welding, or otherwise connecting the interlocking corner pieces to one another. This document discloses a loosely resting perimeter ring on the chimney edge that can be connected to the masonry by screwing.

[0004] It is well known that chimneys are exposed to harsh weather conditions, including rainwater, wind, and flue gases. Rainwater, especially during strong winds, penetrates the chimney, runs down its inner walls, and then finds its way through old, weathered joints, eventually running beneath the chimney flashing and the waterproofing membranes or standard roofing material, over the roof sheathing. This not only damages or causes soot buildup in the chimney but also in the entire roof. The source of the damp patches is often difficult to pinpoint. Homeowners are then left with no option but to re-seal or re-cover their entire roof. However, this does not address the underlying cause of the waterlogged and partially rotten components around the chimney.According to current technology, most measures only ensure that rainwater cannot penetrate outside the chimney.

[0005] Therefore, according to the current state of the art, it is difficult to attach chimney covers using spacers, for example by means of fastening screws via dowels located in boreholes of a porous masonry chimney.

[0006] Furthermore, it is also difficult to provide chimney protection that can be adapted to different chimney sizes.

[0007] The object of the present invention is therefore to create a fastening device for chimney covers that enables a secure and firm fastening of the chimney cover to the masonry in a simple manner and is at the same time adaptable to different sizes.

[0008] This problem is solved by a fastening device for chimney caps with a ring surrounding the chimney on its outer circumference, wherein the cap is designed as at least one plate arranged on the ring and attached at a distance from the top edge of the chimney via support elements, which covers the chimney opening in the closed state and exposes it in the open state, which is characterized in that a clamping ring is provided as the ring, that the clamping ring consists of two parts, each enclosing right angles, which each have angled projections that can be connected to each other by means of a connecting element in the form of a clamping bolt or a threaded screw which engages in corresponding bores of the projections, so that the clamping ring clamps around the outer circumference of the chimney and can be variably fastened in its size.

[0009] Preferred embodiments are set forth in the dependent claims.

[0010] The chimney guard according to the invention enables easy installation, particularly in the case of chimneys with defective outer edges, through the clamping method, without the need for fastening by screwing into the weathered joints or stones.

[0011] The alignment of the protective cover or cover plates, or the adjustment of the airflow, is achieved by adjusting the height of the clamping ring on the chimney circumference. According to the invention, at least one bracket element is provided on the clamping ring. The bracket element is L-shaped, with one leg resting on the top edge of the chimney. The bracket element partially surrounds the clamping ring and extends along its outer vertical surface. The alignment or height adjustment of the clamping ring is achieved via an elongated hole provided in the bracket element. Simultaneously, the bracket element also serves to additionally secure the clamping ring to the chimney.

[0012] Furthermore, the fastening device for chimney caps according to the invention is characterized by the fact that it is not only variable in the range of minor dimensional differences with regard to chimney sizes. With the fastening device according to the invention, one or more additional coupling elements can be integrated as components of the clamping ring for further extension and adaptation of the protective cover, including the cover plate. The coupling elements are mounted between the projections of the clamping ring and parallel to the center line M of the cover plates in the area of ​​the angled projections.

[0013] The ribbing provided on the clamping ring and the brackets, which is preferably arranged in a horizontal direction to the chimney, creates a firm connection between the clamping ring and the masonry of the chimney and also between the clamping ring and the brackets.

[0014] The fastening device for chimney covers according to the invention is preferably made from recycled, hardened and correspondingly heat-resistant plastic, in particular from PVC granules.

[0015] Therefore, the fastening device for chimney caps according to the invention is also very environmentally friendly. Since a chimney cap is usually installed for more than 20 years, a large portion of the plastic waste is thus removed from the environmental pollution cycle for an extended period.

[0016] The fastening device according to the invention for plastic chimney covers is available as a self-assembly kit in commercially available carrying cases as a sales unit in different sizes and different colors.

[0017] The invention is described below with reference to the drawing of the Fig. 1-6 will be explained in more detail.

[0018] This shows: Fig. 1: the fastening device according to the invention, mounted on a chimney Fig. 2: a top view according to the Fig. 1 with the cover plates removed Fig. 3: A top view of the cover plates that can be folded open along the center line M Fig. 4: a top view of a coupling element which can be attached between the developed projections of the clamping ring. Fig. 5: the locking element for the two cover plates with corresponding rubber lip Fig. 6: A cross-sectional view through a clamping ring part with height-adjustable console and horizontal ribbing.

[0019] The Fig. Figure 1 shows the fastening device according to the invention for chimney caps with a cover consisting of two cover plates, the individual cover plates being designated by reference numerals 1 and 1'. The cover plates are flush along a common center line M. Plastic snap fasteners, which are mounted along this center line M, are designated by reference numeral 8. A safety lock designated by reference numeral 7 is also shown, which has an engaging rubber lip for locking the cover plates 1 and 1' perpendicular to the center line.

[0020] In the exemplary embodiment, the cover plates are provided with reinforced ribs 1a and the plates also have a water channel with the reference numeral 6.

[0021] The struts 4 and 5, which are adjustable by means of a pressure lock, are articulated on one side to the cover plates 1 and 1' and on the other side to the clamping ring 2, so that they allow the opening or covering of the chimney opening according to the positioning of the plates 1 and 1'.

[0022] In the exemplary embodiment, the clamping ring 2 is composed of four individual rectangular parts which can be attached to the outer circumference of the chimney at variable intervals via projections 2a with appropriate fastening means.

[0023] The brackets are marked with the reference numeral 3 and allow height adjustment of the clamping ring 2 on the outer circumference of the chimney along the elongated holes 17 formed in the brackets. Furthermore, connection holes 1b for a further plate (1,1') for an extension by a coupling element 12 (not shown) are provided on the end edge of the plates 1 and 1'.

[0024] According to the Fig. Figure 2 shows a top view of the clamping ring 2, which consists of four individual parts, each forming a right angle. These parts can be connected to one another via appropriately designed projections 2a using a clamping bolt or a threaded screw 9. The provision of four connecting elements for the clamping ring 2 makes it possible to adapt it to different chimney circumferences. Reference numeral 10 in this figure designates the recesses with pivot points for inserting the struts 4 and 5.

[0025] The Fig. Figure 3 shows a top view of the closed cover plates 1 and 1'. The cover plates are adjustable via the hinged struts 4 and 5, so that they can either cover or uncover the chimney opening. Reference numeral 8 designates the snap-lock elements for securing the two plates, and reference numeral 11 designates the pivots or hinges for accommodating the struts of the coupling elements 12.

[0026] Furthermore, the Fig. 4 the formation of a clamping coupling element 12, which can be inserted between the angled projections 2a of the clamping ring 2 and fastened accordingly. The reference numeral 11 again designates the pivots for the struts of the coupling elements.

[0027] In the Fig. Figure 5 shows the connection or locking device between the two cover plates 1 and 1'. A rubber lip 15 formed on the edge of plate 1 engages in a corresponding recess on the edge of plate 1'.

[0028] The Fig.Figure 6 is a sectional view and shows an L-shaped bracket element 3 resting on the top edge of the chimney, surrounding the clamping ring 2 in its vertical extent, and extending along the outer vertical surface of the clamping ring for additional fastening and height adjustment of the clamping ring 2. The height adjustment is achieved via an elongated hole 17 provided in the bracket element 3 by means of a fastening screw or a clamping bolt 16 along the axis of the elongated hole 17. The bracket element 3 has a groove 18 on the side facing the clamping ring 2 for better adhesion, and the clamping ring 2 also has a groove 10 for better adhesion to the chimney wall.

[0029] Preferably, the chimney guard according to the invention is made from plastic components, in particular from recycled plastic, and therefore has a low weight.

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