FI90139C - Fastening mechanism for shutters in masonry fireplaces - Google Patents

Description

Door frame mounting mechanism for masonry fireplaces 1 90139

The invention relates to a door frame fastening mechanism for masonry fireplaces, in particular soapstone stoves, which fastening mechanism comprises fastening means for fastening the door frame to the stone elements of the fireplace so that the frame rests on its rear surface against the front surface of the stone elements. an integral flange portion thereof abutting the rear surface of the stone element and fasteners in the fastener and the frame for fastening each fastener to the frame such that the stone element 15 is pressed between the flange portion and the frame, fastening the frame to the stone elements. threaded hole, whereby the fixing screw is screwed through the hole into the threaded hole.

20 The frames of the doors of a brick fireplace are fixed after the actual fireplace has been erected from stone elements. Today, hatch frames are attached to the stone elements of a fireplace with metal pins, on which holes are drilled in the stones, using the hatch frame as a guide. By tapping the pins or 25 before tapping the hole, the door frame is pulled tightly against the paving stone. Alternatively, the locations of the holes can be marked first using the holes in the frame for locating and then drilling the holes 2-3 mm inwards from the marked locations. Glue is used in the holes to help attach the pins. However, the fastening methods described above have some weaknesses. First, the attachment does not always become tight enough or it can loosen over time, causing the seal between the frame and the stone to lose its meaning. In addition, the attachment may break the rocks. Using the drill in installation 2 9 Π1 3 9 is difficult because there may be hard points in the stone that guide the blade and because the drill does not always fit in a straight position at the installation site.

U.S. Pat. No. 4,384,567 discloses the idea of replacing existing pins drilled into stone elements with frame-fixing fasteners extending to the rear surfaces of the stone element or elements so as to allow the stone elements to be pressed between the fastener and the rear surface of the frame.

It is therefore an object of the present invention to overcome the shortcomings of the known solutions and to provide a new type of fastening mechanism by means of which a tight and loose frame fastening is achieved, which can be achieved by using a screwdriver as the sole fastening tool. According to the invention, this is achieved in that the fastening parts comprise a protrusion formed on the fastening piece and a guide groove in the frame, along which the protrusion slides during tightening 20, controlling the movement of the fastening piece.

In addition to the above-mentioned advantages, the solution according to the invention provides a quick and easy way to install the door frame in place. In addition, the frame can be quickly removed or tightened if necessary.

The invention will now be described in more detail with reference to the examples according to the accompanying drawings, in which Fig. 1 shows a fastening piece according to the invention in perspective, Fig. 2 shows a fastening mechanism in the lower right corner of the frame in partial cross-section, seen from the furnace.

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35 3 90139

Figure 1 shows a perspective view of a fastening piece 1 according to the invention. The fastening piece comprises a substantially triangular and plate-like flange part 2 and a pin part 3 substantially perpendicular to the flange part 5, located close to one corner of the triangular flange part. The pin part 3 consists of a body 4, and projections 4a and 4b formed on its outer surface, the protrusion 4a extending from the plane of the flange part substantially semicircularly towards the free end of the body 4, and the protrusion 4b as a narrower ridge from the plane of the flange part towards the free end. The protrusion 4b is located on the opposite side of the body 4 from the protrusion 4a and its tip portion 4c is bevelled narrower. The body 4 of the pin part is further provided with a threaded hole 6 extending from its free end towards the flange part 1a, to which a fixing screw 7 is threaded in Fig. 1. For soft stone materials such as soapstone, the flange part further has two bumps 5a and 5b biting the stone elements. .

Figures 2 and 3 show how the bone of the fireplace when the frame 8 is attached to the stone elements 9 of the fireplace by means of fasteners 1. Fig. 2 shows the fastening mechanism in the lower right corner of the frame in a partial cross-section seen from above, and Fig. 3 shows the fastening mechanism in the lower left corner of the frame seen from behind, i.e. from the firebox. Holes 9 are formed in each corner of the frame 8 for the fixing screw 7, as well as in the rear surface of the frame, in its corners, triangular shaped parts 10 provided with a guide groove 11 (Fig. 30 3). According to Fig. 2, each fastening piece 1 is placed in the rear corner of the frame so that the flange part 2 of the fastening piece abuts the rear surface of the stone element 9. The fastening screw is screwed from the front of the frame through the holes 9 'into the threaded hole 6 in the fastening piece, whereby the fastening element flattens between the flange part of the fastening piece and the frame 4, fixing the frame 8 firmly in place. During tightening, the protrusion 4b slides in the guide groove 11, controlling the movement of the fastening piece 1. As the mechanism tightens, the bumps 5a and 5b bite inside the stone elements. The fastening screw 5 has a so-called the sideboard base and the front surface of the frame have a corresponding recess for it. In the example according to the figures (cf. Fig. 3), a semicircular projection 4a is attached to the stone element 9 at its lower edge.

Although the invention has been described above with reference to the example according to the accompanying drawing, it is clear that the invention is not limited thereto, but can be modified in many ways within the scope of this inventive idea of the appended claims. In principle, the fastening piece can be tightened to the frame in different ways, all that matters is that the stone element is pressed between the fastening piece and the frame, fastening the frame to the stone elements. However, the combination of the threaded hole 20 and the fastening screw formed in the fastening piece is as simple as possible. Likewise, the design of the fastener and its abutments in its frame can vary in many ways. Also, the fasteners need not be located in the corners of the frame, although placing the fasteners in the corners ensures the most effective fastening.

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Claims (1)

A door frame fastening mechanism for masonry fireplaces, in particular soapstone stoves, which fastening mechanism comprises fastening means for fastening the door frame (8) to the stone elements (9) of the fireplace so that the frame (8) rests on the rear surface of the stone elements (9). the fastening members comprising a plurality of fastening pieces (1), each provided with 10 integral flange parts (2) abutting the rear surface of the stone element (9), and fastening parts (1) and frame (8) 4b, 6, 7, 9 ', 10, 11) for fastening each fastening piece (1) to the frame (8) so that the stone element 15 (9) is pressed between the flange part (2) and the frame (8), fastening the frame to the stone elements comprising fastening parts. the hole (9 ') of the fixing screw (7) formed in the frame and the threaded hole (6) in the fixing piece (1), whereby the fixing screw (7) is turned through the hole (9 ') in the threaded hole (6), characterized in that the fastening parts comprise a projection (4b) formed on the fastening piece (1) and a guide groove (11) in the frame (8) along which the projection (4b) slides during tightening 1) movement. Fig. 6 is 139 Fästmekanism förrucken i murade eldstäder, spe-ciellt förjstensugnar, vilken fästmekanism omfattar. of the elements (9), varvid fäst-elementen omfattar ett flertal fästdelar (1), vilka var och en försetts med ett fast därtill anslutet flänsparti 10 (2) som anligger mot stenelementets (9) bakre yta, och i fästdelen (1) och frame (8) of the main body (4b, 6, 7, 9 ', 10, 11) for the body (1) of the frame (8), with the elements (9) included in the flange parts (2) och ramen (8), varvid ramen blir fäst vid 15 stenelementen, vilka fästorgan omfattar ett häl (9 ') en i ramen utformad fästskruv (7) och ett gänghäl (6) i fästdelen (1), varvid fästskruven (7) skruvas genom hälet (9 ') in i gänghälet (6), kännetecknad därav, att fästorganen omfattar ett i fästdelen (1) format utsp range 20 (4b) and a styrofoam (11) in the frame (8), a sloping styrofoam (4b) glider at the bottom and styrene (1). li