SE509244C2 - Device for joining together wooden components in furniture construction - Google Patents

Abstract

The construction parts comprise two wooden strips (28) of the same shape and held together by metal parts (26). The strips have a track on their facing sides, a raised formation with the same width as the track, a surface in the same plane as the raised formation, and a surface in the same plane as the bottom of the track.

Description

10 15 20 25 30 35 509 244 Figure 2 shows in cross section the construction in the chair leg.

Figure 3 shows a side view of a stackable chair according to the invention.

Figure 4 shows the chair in 3 gur 3 seen from the front.

Figure 5 shows a table according to the invention.

Figure 6 shows one half of a three-point connection according to the invention.

Figure 7 shows the parts included in the connection according to Figure 6 seen against a tree detail short end and a corresponding wooden detail in cross section.

In all urer gures, the metal parts enclosed in the wooden parts are shown in broken lines.

The armchair shown in Figure 1 has a frame with rear legs 1 and front legs 2.

Between these there is a frame 3 for the seat cushion. The armrest 5 is connected to the back part 4 and has a vertical support 6 against the seat frame. Inside the body there are stiffening and cohesive metallic parts 7, 8 and 9 which are completely hidden by the wooden parts.

The metal parts are cut out of sheet metal and can be about 12 mm wide and 3 mm thick.

The metal part 8 has three arms as from the branch and connection point extends outwards in the respective back 4, rear legs 1 and seat frame 3. In all cases ends the arms of the metal parts with a wider portion with a circular outer shape which is intended to lock the metal part in the surrounding wooden parts.

Figure 2 shows in cross section in a plane at the line B-B the construction of the details. Benet 2 is made of two identical wooden strips 12 and 13 in the upper ends of which millings have been made corresponding to the metal part 7. The construction of the wooden slats is explained in more detail below reference to fi gur 7. The two halves 12 and 13 of the wooden part 2 are leading with each other by gluing or in another suitable way, eg with screws.

The chair shown in Figures 3 and 4 is specially designed to be stackable why legs and armrests are displaced laterally compared to the one shown in Figure 1 the armchair. The chair in fi gur 3 also has a cantilevered armrest, which is a construction made possible by the present invention. The armrest 5 is connected to the back part 17 10 15 20 25 30 35 509 244 3 by means of a metal part 16 inside the surrounding wooden parts as described above.

The back part 17 is in turn connected to a second back part 4 parallel thereto by means screws 20 and 21. These are screwed from the inside of the back part 4 and into the corresponding, threaded holes received in the metal part 16 which in this case thus has two functions.

In the same way, threaded holes have been accommodated in the metal part 14 for screws 18 and 19, which skulls abut against the metal part 15 in its upper part.

Figure 5 shows another application of the invention, in this case a table with a circular disc 22 and three legs, each with an upper part 24 and a lower part 23 and an insert 25 of metal. The invention makes this possible, as in the other examples shown, to perform constructions seemingly entirely in wood and with marked changes of direction without waiver needs to be made on the strength of the structure. By those in the construction the included wooden details consist entirely of straight strips even for seemingly curved details significantly better utilization of the wood is achieved in the manufacture of the parts than if these were made bent into a piece of wood.

Figures 6 and 7 show in more detail the construction where three parts meet, for example as in the wheelchair shown in Figure 1. Each part consists of two wooden strips 28 and 30 of the same design which are held together by the metal part 26.

The wooden slats have on their facing sides a groove 33, an elevation 32 with the same width as the groove 33 and a surface 31 in the same plane as the surface of the elevation 32 and a surface 34 in the same plane as the bottom of the groove 33. in other embodiments of the groove 33 may be slightly deeper than shown in this example and its the bottom then does not settle in the same plane as the surface 34. Where the wooden parts meet is theirs ends cut with the angles shown in fi gur 6 and millings corresponding the metal part 26 has been made in both halves of the respective wooden parts. These halves are then joined in pairs, preferably by gluing but in certain applications by other appropriate means.

Within the framework of the invention tank, different embodiments may be possible. That which The metal part mentioned above can be made of, for example, a plastic material which possesses required mechanical and strength properties. The wooden slats can also be given different design and have your grooves and elevations, however, the symmetry is taken into account that the two facing, profiled surfaces are equal and fit into each other.

Claims (2)

10 15 20 25 509 244 P-4426 PATENT CLAIMS 1. When joining mutually abutting ends of parts of constructions made essentially of wood with completely hidden reinforcement of the connection by means of an insert of other material characterized in that the wooden parts are made as two adjoining halves (12, 13) with in them made cutouts whose shape connects to the shape of the corresponding part of the insert (7, 8, 9) that a joint in one piece insert (7, 8, 9) with branches corresponding to the number of adjacent wooden parts is inserted in one half of each adjacent wooden part after which it the second half of the respective wooden part is joined to the first half, whereby the insert is xered inside the joined wooden part by means of extended end parts of each branch of the insert. Device for connecting mutually abutting ends of parts of constructions made essentially of wood with completely concealed reinforcement of the connection by means of an insert of other material characterized in that each connecting wooden part consists of two connecting and fastened halves (12, 13). ) with millings made in these whose shape connects to the shape of the corresponding part of the insert (7, 8, 9) and a common one-piece insert (7, 8, 9) with branches, each with a final extended end part, corresponding to the number abutting wooden parts, each branch being enclosed in the cavity formed by the abutting halves of each wooden part and fixed therein by means of the widened end parts.