RU216308U1 - Hidden fasteners for facade and terrace boards - Google Patents

Abstract

The utility model relates to the field of construction of wooden structures consisting of supporting and supported parts, namely, to a method of hidden or invisible fastening of wooden boards when finishing facades, terraces and other surfaces, such as wooden floor coverings, walls, ceilings, fences, as in indoor indoors and outdoors, namely to the method of hidden or invisible fastening of wooden boards when finishing facades, terraces and other surfaces. This technical solution provides the necessary clearance between the mounted boards, is a reliable and universal fastener for facade and / or terrace boards, but has a low bending strength. The technical task of the proposed technical solution is to reduce the metal content of the product, expand the scope of fasteners and increase the strength characteristics of fasteners.

Description

The utility model relates to the field of construction of wooden structures consisting of supporting and supported parts, namely, to a method of hidden or invisible fastening of wooden boards when finishing facades, terraces and other surfaces, such as wooden floor coverings, walls, ceilings, fences, as in indoor indoors and outdoors, namely to the method of hidden or invisible fastening of wooden boards when finishing facades, terraces and other surfaces.

The closest is the technical solution according to the patent RU 129131 IPC E04B 13/21 Application: 2012158360 dated 12/26/2012, Published: 06/20/2013 Bull. No. 17 "Reinforced fasteners "Snake-boat" for facade and terrace boards", characterized in that the fasteners are made in the form of a bar of a trough profile with external flanging ("boat"), the presence of a horizontal shelf, side longitudinal and transverse shelves, the placement of side longitudinal and transverse flanges at an angle of 45 to 90º with respect to the horizontal flange, and the transverse flanging exceeds the width of the horizontal lath, taking into account the longitudinal flanging, as well as with the possibility of placing a stopper on the horizontal flange.

This technical solution provides the necessary clearance between the mounted boards, is a reliable and universal fastener for facade and / or terrace boards, but has a low bending strength.

The technical objective of the proposed technical solution is to reduce the metal content of the product, expand the scope of fasteners and increase the strength characteristics of fasteners, including:

the strength of the overall structure increases, since the technical solution of the fasteners, in comparison with the closest analogue, has added longitudinal stiffeners in the form of a bend of horizontal longitudinal shelves, minimizing the deformation of the lag structure under the influence of wind load and the weight of the flooring;

the deformation of the overall structure during operation is reduced;

the metal consumption of the product is reduced due to the exclusion of the second platform with a hole for connection with the guide;

the range of application is expanded with the possibility of mounting wide boards by increasing the length of the horizontal longitudinal shelf and vertical longitudinal shelves.

The technical result is to reduce the consumption of the material from which the fasteners are made, while increasing the rigidity of the fasteners and bending strength, as well as improving the operational properties of the fasteners and expanding the scope of the fasteners due to the possibility of mounting wider facade / terrace boards.

The technical result is achieved as follows.

Hidden fasteners for facade and terrace boards, designed to be located on the back side of the board being fixed, made with the possibility of locating the ends of the fastener behind the edges of the board, moreover, the fastener is made in the form of a strip with a profile that contains at least one hole located on the longitudinal axis, under the fastening element for the board to be fixed, and at least one hole for the fastener for the guide, wherein one end of the fastener is made with the possibility of holding the board by placing it under the previously fixed board in the gap between the board and the guide, and the second end of the fastener is made with the possibility of holding the board through a hole for a fastener with a guide, characterized in that the profile of the fastener contains a horizontal base with at least one hole for the fastener located on the central axis and with the possibility of locating a stopper, two side inclined longitudinal shelves with horizontal ones bent in opposite directions longitudinal shelves, one side inclined transverse shelf and a horizontal transverse shelf, which forms a platform with a hole located on it for a fastener for connecting the fastener with a guide (lag), while the horizontal longitudinal shelves contain additional stiffening ribs in the form of a bend.

Fasteners, characterized in that the holes for the fastener are round and/or oval, have a size of at least 3 mm, can be made with a countersink. Stiffening ribs in the form of a bend are made along the entire length of the horizontal longitudinal flanges or only along the length of the horizontal transverse flange. The stopper is made in the form of a folding part in the plane of the horizontal base and can be located both along the longitudinal axis of the fastener and perpendicular to the longitudinal axis of the fastener. In this case, the width of the stopper is not less than 2 mm. The stopper can be made in the form of a gable rectangle with a central part protruding above the surface of the horizontal base. Lateral inclined longitudinal and transverse shelves are located at an angle of 30 to 90° relative to the horizontal base.

This design is illustrated in the drawings.

Fig. 1 (a) - general view of fasteners;

(b) top view;

(c) - side view;

(d) - section A-A fasteners.

Fig. 2 - General view of the placement of fasteners on the back side of the fixed board.

Fig. 3 - working position of fasteners with fastening to the guide (lag) and the board to be fixed.

Fig. 4 is a general view of the placement of fasteners on the back side of the board being fixed, the width of which is greater than the length of the fastener.

Fig. 5 is a general view of the placement of fasteners on the back side of the board being fixed, the width of which does not exceed the length of the fastener.

Fig. 6 (a) - general view of the fastener with the stopper located perpendicular to the side inclined longitudinal shelves;

(b) top view;

(c) - side view;

(d) - section A-A fasteners.

Fig. 7 (a) - general view of fasteners with stiffeners in the form of a bend, made only along the length of the horizontal transverse flange;

(b) top view;

(c) - side view;

(d) - a fragment of stiffening ribs in the form of a bend made only along the length of the horizontal transverse flange;

(e) - section A-A fasteners.

Fig. 8 (a) - general view of the fastener with a stopper in the form of a gable rectangle with a central part protruding above the surface of the horizontal base;

(b) top view;

(c) - side view;

(d) - a fragment with a stopper in the form of a gable rectangle with a central part protruding above the surface of the horizontal base;

(e) - section A-A fasteners.

This technical solution is implemented as follows.

Fasteners are made in the form of a bar with a complex profile shape, for example, from metal, including stainless steel, aluminum and its alloys, non-ferrous metal by cold stamping. Fasteners can be made of any other material, for example, from various plastics, such as polyethylene. Fastener profile, with additional stiffeners, made in the form of a bend (1) of horizontal longitudinal shelves (2), increases the rigidity of the fastener and the range of materials used, as it provides the necessary bending strength, and also reduces the deformation of the fastener and the overall structure during operation . The fasteners are placed on the back side of the board to be fixed (3), due to which the fasteners are invisible from the front side of the wooden covering when fastened to the guides (logs) (4). Invisible fastening gives a wide range of use for building and finishing fasteners, both inside and outside structures, both in full and partial cladding (finishing) of the entire surface area, for example, wooden floor coverings, walls, ceilings, fences, decks or roofs, as well as for finishing facades. Side inclined longitudinal shelves (5) and side inclined transverse shelves (6) are placed at an angle of 30 to 90 degrees relative to the horizontal base (7), due to which the horizontal base (7) rises above the plane of the horizontal longitudinal shelves (2) and horizontal transverse shelf (8). Lateral inclined longitudinal shelves (5) and a horizontal base (7) form the necessary air gap between the guide (lag) (4) and the fixed board (3), which provides aeration and prevents the accumulation of water vapor, which causes accelerated destruction of wooden structural elements and corrosion of metal elements. In the plane of the horizontal base (7) there are holes (9) for fasteners (screws, self-tapping screws) (10) for connecting the board (3) with fasteners. Holes (9) for fasteners (screws, self-tapping screws) (10), for connecting the board (3) with fasteners, are located on the central axis of the fastener, the distance between which depends on the width of the board (3) or customer requirements, thereby achieving versatility fasteners for all main sizes of boards and variability in the arrangement of holes. Moreover, the size of the hole (9) for fasteners (screws, self-tapping screws) (10) for connecting the board (3) with fasteners is calculated based on the diameter of the fastener, and can vary from 3 mm or more, for the possibility of fastening to fasteners (screw , self-tapping screw) of various diameters. Holes (9) for fasteners (screws, self-tapping screws) for connecting the board with fasteners can have an oval shape, which provides the necessary degree of freedom for the board to be fixed, leveling moisture changes in the geometric parameters of the board. The diameter of the fastener (screw, self-tapping screw) in accordance with the type of fastener used for fastening wooden surfaces to each other or fastening wood to other material is from 2.5 mm to 11 mm. The size of the holes (9) is from 3 to 12 mm in diameter, but not more than the width of the horizontal base of the fastener (7). The profile of the fastener forms a recess and excludes the contact of the head of the fastener (screw, self-tapping screw) with the surface of the log (4), while countersinking of the holes is not necessary, but possible, which facilitates production and reduces the cost of fastener production. For example, for fasteners up to 190 mm long, a self-tapping screw with a diameter of 4-5 mm is used, and for fasteners from 200 to 290 mm and a width of 20 mm ± 1 mm, a self-tapping screw with a diameter of 6.5-8 mm. To avoid scrolling around its axis and displacement, fasteners are installed on at least 2 self-tapping screws in the body of the board. This is a reliable and simple method of fastening. Fasteners are made with the possibility of placing a stopper (11), which allows you to form an equal technological gap between the boards. The length of the stopper (11) cutout is calculated based on the required technological gap between the boards, which is at least 2 mm, and the height of the stopper (11) is calculated based on the thickness of the connected boards, while the height should not exceed the width of the horizontal base (7) of the fastener. The stopper (11) is made in the form of a folding strip, which is formed by a cutout in the plane of the horizontal base (7) of the fastener, followed by a bend perpendicular to the plane of fastener contact with the board being fixed. In a particular case, the stopper can be bent inside the fastener, and the stopper plane can be turned either parallel to the side inclined longitudinal shelves (5) or perpendicular to them, or the stopper plane can be turned at the required angle to the side inclined longitudinal shelves (5). Also, the stopper (11) can be made in the form of a gable rectangle with a central part protruding above the surface of the horizontal base (7). The stopper (11) is placed at the upper end of the fastener so that the hole for the guides (lag) (12) located on the horizontal transverse shelf (8) is above the stopper (11) during installation. In this case, the distance from the edge of the fastener to the stopper (11) must be at least the size of the horizontal transverse flange (8) and the side inclined transverse flange (6), and the width of the stopper (11) should not exceed the width of the horizontal base (7). Longitudinal horizontal shelves (2) prevent the ends of the side inclined longitudinal shelves (5) from being pressed into the wood of the beam (4), while a second horizontal transverse shelf is not required, which saves fastener material. And in the plane of the horizontal transverse shelf (8) holes (12) are placed for a fastener (screw, self-tapping screw) (13) with a guide (lag) (4), which ensures reliable fastening to the guide (lag). The horizontal transverse flange (8) avoids the indentation of the ends of the side inclined transverse flange (6) into the log wood, thereby increasing the strength of the overall structure.

Mounting fasteners produced as follows.

Fasteners are placed on the back side of the board to be fixed, so that the ends of the fasteners protrude beyond the ends of the board by at least the length W (in most cases, W = 20 mm is taken). When mounting a fixed board, the width of which does not exceed the length of the fastener, taking into account the double length of the required protrusion of at least 2 * W mm, use one fastener at the junction of the fixed board with the guide (lag). And for a fixed board, the width of which is greater than the length of the fastener, taking into account the double length of the required protrusion of at least 2 * W mm, two fasteners are placed on the fixed board, with the fasteners spaced at opposite ends of the board or the fastener is cut, the two parts of which are thus carried apart in different sides of the board.

Fasteners are positioned so as to be able to bring the lower end of the fastener under the previously fixed board, into the gap between the board and the guide (log), due to the height of the fastener, which provides additional fastening reliability by holding the subsequent mounted board of the previous one. The upper end of the fastener is provided with at least one hole for the fastener (screw, self-tapping screw) for fastening to the guide (log). The size of the hole for the fastener (screw, self-tapping screw) for the guide (lag) located on the horizontal transverse shelf is calculated in the same way as for the hole for the fastener (screw, self-tapping screw) for fixed boards. And depends on the diameter of the fastener (screw, self-tapping screw), the dimensions of the fastener and the size of the board, and ranges in diameter from 2.5 to 11 mm, but not more than the width of the transverse horizontal shelf of the fastener, taking into account the necessary technical indents from the edges of the fastener. To comply with the condition under which the ends of the fasteners protrude beyond the ends of the boards of various sizes, different dimensions of the fasteners are used, for example, for a board with a width of 70 to 250 mm, fasteners with a length of 40 to 290 mm are used, respectively, with a width of 15 mm to 50 mm and thickness from 0.8 mm to 6 mm. When installing a wide board with a width of more than 150 mm, it is more economically feasible to use two short fasteners, 45-60 mm long, instead of one long fastener more than 190 mm long, or cut one fastener with spacing its parts on opposite sides of the board. Fasteners are carried along opposite ends of the mounted board. Each of them has only one end protruding beyond the end of the board to be mounted. One fastener is connected by three fasteners (one with a log and two with a mounted board). The second fastener is connected by two fasteners to the board to be mounted, and the protruding end is led under the previous, already mounted board.

Each subsequent fastener is installed on the board to be fixed parallel to the previous fastener and shifted relative to the previous one in a checkerboard pattern on each subsequent board. A technological gap is provided between the fasteners. Fasteners are installed at all points of intersection of the board with the guide (log). The width of the guides (log) is at least twice the width of the fasteners and the technological gap between the fasteners and is at least 30 mm.

Between the fixed boards, a gap (h) of at least 2 mm must be left, the width of which depends on the type of wood used and the width of the board. When installing a heat-treated board, no gap is allowed. To improve the aesthetic properties of facade cladding or any other surface when using fasteners, the gaps between the boards to be fixed should be of equal size, but this is difficult to achieve without the use of specialized measuring pads to ensure a given gap. To do this, fasteners are made with the possibility of placing a stopper.

When using the proposed invisible fasteners, the following technological operations are performed. The boards to be fastened are laid out on a flat surface with the back side up and the fastener installation sites are marked. Fasteners are installed on the back side of the board being fixed so that the ends of the fasteners protrude from both sides of the board. The boards are turned face up and mounted along the guides (lags). The very first board is installed on the surface of the cladding and attached to the guide (lag) with fasteners (screws, self-tapping screws) through the holes for fasteners (screws, self-tapping screws). Further, for subsequent boards, one end of the fastening is brought under the previous board, which has already been attached to the guide (log) in the gap between the board and the guide (log). When installing a facade board at the corner of a building, not one board is lifted onto the facade at the same time, but two corner boards at once, previously connected to each other by a corner. The second end of the fastener is screwed through the hole to the guide (lag). This is done with all subsequent boards. Due to the thickness of the fastener, a gap remains between the guide (lag) and the board to be fixed.

A gap is left between the boards to be fixed using a stopper made in the form of a folding part of the fastener or in the form of a gable rectangle with a central part protruding above the surface of the horizontal base, the stopper is placed on the upper end of the board so that the next board adjoins the stopper with its lower end.

Claims (12)

1. Hidden fasteners for facade and terrace boards, designed to be located on the back side of the board to be fixed, made with the possibility of locating the ends of the fastener behind the edges of the board, and the fastener is made in the form of a strip with a profile that contains at least one hole located on the longitudinal axis, under the fastener for the board to be fixed and at least one hole for the fastener for the guide, wherein one end of the fastener is made with the possibility of holding the board by placing it under the previously fixed board in the gap between the board and the guide, and the second end of the fastener is made with the possibility of holding boards through a hole for a fastener with a guide, characterized in that the profile of the fastener contains a horizontal base with at least one hole for the fastener located on the central axis and with the possibility of locating a stopper, two side inclined longitudinal shelves with a horizontal bent in opposite directions lateral longitudinal shelves, one lateral inclined transverse shelf and a horizontal transverse shelf, which forms a platform with a hole located on it for a fastener to connect the fastener to the guide, while the horizontal longitudinal shelves contain additional stiffening ribs in the form of a bend. 2. Fastener according to claim 1, characterized in that the holes for the fastener are round and/or oval. 3. Fasteners according to claim 1, characterized in that the holes for the fasteners are made with a diameter of at least 3 mm. 4. Fastener according to claim 1, characterized in that the holes for the fastener are made with a countersink. 5. Fasteners according to claim 1, characterized in that the stiffeners in the form of a bend are made along the entire length of the horizontal longitudinal shelves. 6. Fasteners according to claim 1, characterized in that the stiffening ribs in the form of a bend are made only along the length of the horizontal transverse flange. 7. Fastener according to claim 1, characterized in that it is equipped with a stopper in the form of a folding part in the plane of the horizontal base. 8. Fastener according to claim 1, characterized in that the stopper is located along the longitudinal axis of the fastener. 9. Fastener according to claim 1, characterized in that the stopper is located perpendicular to the longitudinal axis of the fastener. 10. Fasteners according to claim 1, characterized in that the width of the stopper is at least 2 mm. 11. Fastener according to claim 1, characterized in that the stopper is made in the form of a gable rectangle with a central part protruding above the surface of the horizontal base. 12. Fasteners according to claim 1, characterized in that the lateral inclined longitudinal and transverse shelves are located at an angle of 30 to 90 ° relative to the horizontal base.

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