RU197409U1 - INVISIBLE FASTENING FOR FRONT AND TERRACE BOARD - Google Patents

Abstract

The utility model relates to the field of construction and is intended for invisible installation of structures. Invisible fasteners for facade and terrace boards is a plate made of steel. The fastener has one open hole for a self-tapping screw for the guide - lags for mounting the first board at one end. It contains a spacer in the form of a tongue bent at 90 ° from the edge of the plate, located along the longitudinal axis. In addition, the fasteners have at least one round hole and at least one oval-shaped hole located on the longitudinal axis, under the self-tapping screws for the board. Also, the fastener contains at least one hole for a self-tapping screw for the guide - lags from the opposite end of the open hole. At the same time, chamfers are made in the holes. In the loaded places of the fasteners, stiffeners are made in the form of bulge-extrusions. On the ends of the fasteners on both sides of the axis, notches are made in the form of semicircular cut holes, and chamfers are made on the narrow ends on both sides of the fastener. Fasteners allow for easy bending of fasteners in places of notches for easy planting of protruding fasteners under the board, which allows bending of fasteners against guides - logs, which is necessary for the beginning and end of installation of structures with an external framing box. 4 s.p. f-ly, 8 Fig.

Description

The utility model relates to the field of construction and is intended for the invisible installation of structures, which are a system of guides (logs) and wooden finishing boards used in the decoration of facades, terraces, walls, ceilings, etc.

Known fasteners for facade and / or terrace boards "Snake", patent No. 111862 from September 2, 2011. This fastener is made in the form of a plate with several holes for self-tapping screws for facade and / or terrace boards and at least one hole for the guide (lag), while one end of the fastener is held by placing it under the previously fixed on the guide (lag) board in the gap between the board and the guide (lag), and the second end is held through at least one hole with a fastening element in the guide (lag), and provides reliable fixation of boards of various profiles and smooth facades of houses and terraces without visible elements ntov fasteners. However, installation requires two options for its execution: with an additional hole at the bottom of the part at the beginning of installation, and standard fasteners without this hole to continue the decoration. In addition, this fastener is made of steel 2-4 mm thick. During the operation of horizontal decking such as terraces, under the influence of an external load, the direction of which is perpendicular to the plank of the board, the wood is dented into the fasteners. Increasing the height of the fasteners, the size of the indentation increases, thereby causing backlash of the boards and spoiling the appearance of the flooring. Depending on the width of the board, the size of the fastener varies from 120 to 290 mm. An increase in the length of the fastener increases the metal consumption of the product and the weight of the structure. In addition, the described fixture does not take into account the mechanism of compensation of the natural processes of drying-swelling of the boards during operation in a humid environment.

Patent No. 155482 dated October 10, 2015 is also known. The fastener is a bar with several holes for self-tapping screws for facade and / or terrace boards and at least one hole for the log, made in the form of a plate having two protrusions located on the axis of the plate at the end of the fastener. The claimed technical result of the fasteners is to increase the reliability of the fasteners due to the possibility of additional fixing of the facade and terrace boards to each other. This fastener does not take into account the mechanism of compensation of the natural processes of drying-swelling of the boards during operation in a humid environment. In addition, the presence of protrusions at one end of the fastener interferes with the fastener plant under the board.

The prototype of the utility model is the invisible fastener for facade and terrace boards, patent No. 181267 dated November 22, 2017. The fastener has an omega-shaped profile, in its mounting plane there are holes for self-tapping screws for the board and one flanged hole for the guide on one end of the fastener and one open flanged hole for the guide for mounting the first board on the other. In addition, in the mounting plane of the invisible fastener there is a stopper made in the form of a tongue bent from the mounting plane upwards. The utility model allows for rigid fixation of the board while maintaining ventilation of the back side of the board. However, this part is well suited for fixing ventilated facades and lightly loaded terraces, since the fasteners have an omega-shaped profile with a small area of contact with the guide (lag) and a height of at least 3 times the thickness. When using fasteners on highly loaded decking, a small contact area with the guide (lag) will allow metal fasteners to enter softer wood, which will damage the appearance of terraces and play the boards in the direction perpendicular to the board surface. In addition, under excessive loading, the fastener itself may lose shape stability, which will also spoil the appearance of the flooring and cause backlash of the boards. This fastener requires additional starting and finishing fasteners for flooring of structures having a framing external box, since the fastener parts protruding beyond the board will interfere with installation, and the omega-shaped shape makes the process of folding these protruding parts uncomfortable. In addition, the geometry of the ends of the fasteners causes difficulties with the establishment of fasteners under the board during installation to the guides - lags.

The technical result of the utility model is to ensure an unhindered establishment of the end of the fastener under the previous board, by bending the fasteners in the places of the notches while providing a wide range of covered gaps between the boards.

The claimed technical result is realized due to the following design features. Invisible fasteners for facade and terrace boards is a plate made of steel. The rectangular plate has one open hole for a self-tapping screw for the guide - lags for mounting the first board at one end. In addition, it contains a spacer in the form of a tongue bent at 90 ° from the edge of the plate, located along the longitudinal axis. In addition, the plate contains at least one circular hole, and at least one oval-shaped hole located on the longitudinal axis, for self-tapping screws for the board, and at least one hole for the self-tapping screw for the guide - lags from the opposite end of the open hole, in the holes chamfers are made, stiffening ribs in the form of bulge-outs are made in the loaded fastener places, notches in the form of semicircular cut holes are made on the ends of the fasteners on both sides of the axis, and at the narrow ends on both sides The fasteners are chamfered.

The technical problem is achieved by manufacturing fasteners from steel, which is a rectangular plate in which there are at least one hole of a circular shape, and at least one oval-shaped hole located on the longitudinal axis, for self-tapping screws for the board and at least one hole under the self-tapping screw for the guide - lags from one end of the fastener and one open hole for the self-tapping screw for the guide - lags for mounting the first board - from the opposite end. The length of the fastener varies from 65 to 190 mm, the width is from 10 to 15 mm. The holes have chamfers, the dimensions of which are designed for the use of self-tapping screws with a countersunk head of the same size. Also, in the fasteners, a spacer is made in the form of a tongue bent at 90 ° from the edge of the plate, located along the longitudinal axis, the width of which varies and is equal to the value of the necessary clearance between the boards. To increase the rigidity of the fasteners in the loaded places, stiffeners are made in the form of bulge-extensions. On the ends of the fasteners on both sides of the axis, notches are made in the form of cut-out semicircular holes. Chamfers are made on the narrow ends on both sides of the fastener.

The thickness of the sheet from which the fasteners are made is selected in the range from 1 to 2 mm. The fixture in the form of a plate is suitable for mounting highly loaded structures, for example, terraces, due to the fact that it has a maximum contact area with structural elements. And the small thickness of the fasteners gives a small amount of indentation of the fasteners into the wood, thereby reducing the backlash of the boards. The small thickness of the fasteners also allows you to use aluminum lags with a low under the fasteners on the front plane as guides (lags). Such lags are used in construction, for example, when installing boards made of wood-polymer composite. The use of thin fasteners with a thickness of 1-2 mm together with an insulating gasket, for example, from a sheet of insulating paronite with a thickness of 1-2 mm, necessary for protection against galvanic corrosion, allows you to place them flush with the front surface of the log, the board does not only lie on fixture, but also on the plane of the log itself.

During installation, fasteners from one side of the board edge are fixed through a round hole, and at the opposite edge through an oval hole, which allows the board to slide freely after swelling-shrinkage after installation. The shape of the holes is designed so that the caps of the self-tapping screws during installation do not go beyond the fasteners themselves. In the manufacture of fasteners made of steel 1-1.5 mm thick, instead of chamfers, countersinks are made in the holes for the logs, and stiffeners are made along the entire fastener on both sides of the holes. The spacer made in the part provides a guaranteed gap between the boards from 4 to 8 mm. The minimum value of the distance of the distance can be equal to the thickness of the steel sheet used, in this case, the distance is performed across the longitudinal axis of the part. If necessary, the spacer may not be manufactured.

Chamfers at the narrow ends of the fasteners are made with the aim of easier planting the protruding ends of the fasteners under the board. The notches in the form of semicircular holes cut out on the ends of the fasteners provide easy bending of the fasteners in the places of the notches and allow bending of the fasteners to the guides (logs), which is necessary to start and end the installation of structures with an external framing box.

In FIG. 1 shows the described fasteners with a thickness of 1.5-2 mm with a spacer located along the axis, where (a) is a section AA; (b) - front view. The numbers indicate: 1 - plate; 2 - a round hole for mounting hardware to the lag; 3 - a round hole for mounting hardware to the board; 4 - oval hole for mounting hardware to the board; 5 - oval open hole for mounting hardware to the lag; 6 - stiffener; 7 - distancer; 8 - semicircular notch; 9 - chamfer at the end of the fixture; 10 - longitudinal axis.

In FIG. 2 shows the described fasteners with a thickness of 1.5-2 mm with a spacer located across the axis, where (a) is a section B-B; (b) - front view.

In FIG. 3 shows the described fasteners with a thickness of 1.0-1.5 mm with a spacer located along the axis, where (a) is a section BB; (b) - front view.

The described hardware can be mounted in two ways. In the first method, boards up to 145 mm wide are attached. Installation is as follows.

The fasteners are screwed with self-tapping screws to the wrong side of the board so that its ends protrude beyond the board, the protrusion of the front edge of the fastener determines the distance. One end of the fastener is started for a board fixed earlier on the guide - lag, and the other end is mounted with a self-tapping screw through a round hole to the guide (lag). Installation of the first board is carried out using a self-tapping screw through an open oval hole in the bottom.

Installation of boards over 145 mm is carried out using two fasteners, instead of one. When mounting boards in this way, the fasteners are fixed on the board through two holes with self-tapping screws opposite each other so that the upper ends of the fasteners protrude beyond the board, the protrusion of the fasteners determines the distance. Then one end of the fastener is wound behind a board fixed earlier on the guide - lag, and the other end is mounted with a self-tapping screw through a round hole to the guide - lag. The first board is mounted using a self-tapping screw through a round hole in the bottom fastener.

In FIG. 4 shows a diagram of the start of mounting boards up to 145 mm wide.

First, boards (12) are placed on the free even surface with the front side, and on the reverse side markup (13) is drawn with a pencil in the form of a vertical line at each intersection of the board (12) with guides (lags) (14). The fasteners (11) are mounted apart from each other parallel to each other on both sides of the marking lines (13), providing between the fasteners a technological gap of 3-10 mm, each fixing with two self-tapping screws (15).

In FIG. 5 shows a diagram of the start of mounting boards with a width of more than 145 mm. In this case, the boards (12) are also placed on a flat surface with the front side, and on the reverse side, a line (13) is marked with a pencil at each intersection of the board (12) with the guide - lag (14). On one side of the marking (13), two fasteners (11) are mounted on one board (12), rotated 180 ° relative to each other, with two self-tapping screws (15) on one fastener (11). On the board following it (12), two fasteners (11) are mounted similarly on the other side of the marking (13). Then the actions are repeated. With this installation method, it is also necessary to leave a technological gap between the fasteners of 3-10 mm.

In FIG. 6 shows a diagram of mounting boards (12) to a guide (lag) (14), where (a) is a front view, (b) is a section G-D.

After the fasteners (11) are fixed on the board (12), it is turned face up. The first board (12) is fixed on the guide (lag) (14) with self-tapping screws (15) on both sides. The second board (12) is brought under the previous one into the gap between the board (12) and the guide (lag) (14), on the other hand, the protruding part of the fasteners (11) is also fastened with a self-tapping screw (15) to the guide (lag) (14). The following boards are mounted in the same way.

In FIG. 7 shows a diagram of the mounting of boards (12) to an aluminum guide (lag), where (a) is a front view, (b) is a section DD; 16 - aluminum lag; 17 - electrical insulating gasket.

In FIG. 8 shows a diagram of the installation of structures with an external framing box, where (a) is a front view; (b) - view from the left; 18 - guide box.

This installation scheme is intended for structures that are a box, inside which there are guide rails, for example, terraces. The mounting of the boards (12) to the guides (14) is similar to the methods described above, except that the first and last boards (12) are attached to the outer edges of the guides of the box (18). At the beginning of installation, the protruding end of the fasteners (11) of the first board (12) is bent with a hammer in places of notches about the guide of the box (18) and fixed with self-tapping screws (15) to the outer edge of the guide of the box (16). When mounting the last board (12), the protruding part of the beginning of the fastener (11) is bent with a hammer in the place where the spacer is located on the guide box (18), and are fixed through the hole in the fastener (11) with self-tapping screws (15) to the outer edge of the guide box (18) )

Claims (6)

1. Invisible fasteners for facade and terrace boards are made of steel and have one open hole for a self-tapping screw for the guide - lags for mounting the first board at one end, a spacer in the form of a tongue bent at 90 ° from the edge of the plate, located along the longitudinal axis, characterized in that the fastener is a plate that contains at least one round hole and at least one oval-shaped hole located on the longitudinal axis, under the self-tapping screws for the board, and at least one hole under the self-tapping screw for the guide - lags from the opposite end of the open hole, chamfers are made in the holes, stiffening ribs are made in the places of fasteners in the form of bulge-outs, notches in the form of semicircular holes are cut out on the ends of the fasteners on both sides of the axis, and the narrow ends on both sides of the fastener are chamfered. 2. Fasteners according to claim 1, characterized in that it can be made of stainless steel. 3. Fasteners according to claim 1, characterized in that the number of round holes for self-tapping screws for the log can be more than one. 4. Fasteners according to claim 1, characterized in that the spacer is made with rounded corners. 5. Fasteners according to claim 1, characterized in that the stiffener can be only one. 6. Fasteners according to claim 1, characterized in that the stiffeners are made around each hole for self-tapping screws for the board.

Images