DE20116715U1 - The multi-axis lamella joint, which consists of several circular sectors, and whose function is based on the mutual support of these sectors - Google Patents

Description

Description

The multi-axis lamella joint, which consists of several circular sectors, and its

Function based on the mutual support of these sectors, belongs to the field of articulated joints, which are designed to facilitate the transport and storage of various structures by folding them and thereby reducing their volume.

Currently existing hinged joints designed for folding structures such as tables, chairs, tents, drying racks, grills, etc. are usually single-axis. The above-mentioned products, folded using single-axis joints, are usually still bulky and are not always convenient for transportation and storage, and almost always require additional tools, devices and hardware.

This problem is solved by using the joints according to claims 1 to 5.

This allows the length, width and volume of the folded structures to be reduced without using additional tools. The /S hinge consists of two or more links. The hinge link consists of several slats punched out of a thin sheet of steel, which are connected to one another using one of the known connection methods (e.g. gluing, screwing, riveting, welding, etc.). When two or more joints are used simultaneously, these joints should be manufactured and used in a direction-oriented manner.

Some examples of the use of slatted hinges.

(Protection claim 3, Fig. 10). Use of two identical hinges (1), (2), each of

which consists of four hinge links. The movement of the hinges takes place in one plane.

The supported parts (3) in the folded state lie in parallel planes. The angles at which the hinge links are made determine the position of the supported parts in space.

Fig. 11 -Folding table

Fig. 12 - Grill rack (2 hinges each with 6 hinge links) Fig. 13 - Drying rack

(Claim 4, Fig. 15). Use of two hinges with four }o hinge links each. One (I) of the joints is right-handed, the other (2) left-handed.

The external dimension of the supported part (5) must be smaller than the external dimension of the supported part (3) so that the part (5) (table frame) can pass through the part (3) when the parts (4) are folded together. (c<e; d<f)

The use of gradually spaced joints allows the following: When assembling the frame, its parts (3; 5) are fixed at certain angles in space, which makes the whole structure stable, since the part (5) of the frame is under the influence of its own weight. This means that the structure has no chance of collapsing. In this case, additional stabilization is unnecessary.

(Protection claim 5, Fig. 17). Two identical main hinges (1), (2) (Fig. 18) according to protection claim 3 are used, each of which consists of four hinge links. The supported parts are attached to the hinge links. Two additional two-link hinges (II) and (III) are attached to the links (I) and (4) of the main hinge (I) (Fig. 17). The hinge links (6) and (9) are firmly attached to the main hinge links (I) and (4), whereby the links (7) and (8) are movable independently of the main hinge links.

is . Additional elements such as auxiliary shelves (5) can be attached to the grill frame (Fig. 18) using the hinges (7) and (8).

The use of the above-mentioned hinge combination allows the construction to be extended as desired, while its volume remains unchanged when folded, because the elements (5) (Fig. 18) merge with the elements (3) when folded, i.e. that the parts (5) and (3) are in one plane (Fig. 9).

(Protection claims 2 and 4, Fig.20). The use of hinge members (7) (Fig.20) consisting of the following parts; three main elements (1), (2), (3), to whose extensions the supported parts (8) are attached, and three additional elements (4), (5), (6) intended for connecting the hinge members to each other.

&idiagr;&sfgr; Three additional elements of the preceding hinge member are connected to three main elements of the subsequent hinge member by means of the pivot axis (9) (Fig.21).

The special feature of this hinge is that it can be rotated and folded both clockwise and counterclockwise.

The application of this hinge can be explained using the examples (Fig.22, 23, 24).

Claims (5)

1. The multi-axis lamella joint, which consists of several circular sectors and whose function is based on the mutual support of these sectors, characterized in that
that - each joint element ( 1 ; 2 ; 3 ; 4 ) of the lamella joint ( Fig. 2) consists of at least 2 identical lamellae (L ₁ ; L ₂ ; L _n ) ( Fig. 1) bound together - each lamella (L _n ) is designed in the form of a circular sector of the same radius (R ₁ ) and with a hole (B) whose centre is on the pitch circle with the radius (R ₂ ). The intersection of the circular arc with one leg of the sector is rounded with the radius (r), where r = R ₁ - R ₂ . The centre of the rounding is the centre of the hole ( Fig. 1). - each link (L ₁ ; L ₂ ; . . .; L _n ) of the slatted chain ( Fig. 1) forms a mirror image of the following or previous one with respect to the axis of symmetry ( 5 ) and is offset by an angle (s) with respect to the following or previous one, where ε = 2.arcsin (r/R ₂ ). that the number of joint elements can be infinite, and the joint elements ( 1 ; 2 ; 3 ; 4 ) ( Fig. 2) are connected to one another by means of a pivot axis ( 5 ).
that only the angles (α; β; �gamma;; δ) of the slats (L ₁ ; L ₂ ) ( Fig. 1) of different joint elements (1; 2; 3; 4; . . .; n) ( Fig. 2) can differ from one another, whereby the sum of these angles must always be 360°.
that when rotating about the pivot axis ( 5 ) ( Fig. 2), the last joint element ( 4 ) after reaching the preceding element ( 3 ) pulls the latter along, etc., until all joint elements (1; 2; 3; 4; . . .; n) fold together to form a closed circle ( Fig. 3). 2. Lamellar joint according to claim 1, characterized in that
that each joint element consists of square lamellae which enclose two opposite circular sectors with radii (R ₁ ; R ₂ ) and corresponding angles (α, α; ₁ ; β _{, β 1 ; �gamma;, �gamma; 1 ; . . .; δ, δ 1 ) (} Fig. 4).
that when the joint elements rotate about the pivot axis ( 5 ) ( Fig. 4), the joint can be folded in two directions: in the first case (I) ( Fig. 4), the tips of the sectors with radius (R ₁ ) come together at the center of the circle with radius (R ₁ ) ( Fig. 5); in the second case (II) ( Fig. 4), the tips of the sectors with radius (R ₁ ) form the tip of a new sector with radius (R ₂ ) ( Fig. 6). 3. The lamella joint according to claim 1, characterized in that the lamellae (L ₁ ; L ₂ ; . . .; L _n ) ( Fig. 7) of each joint element ( 1 ; 2 ; 3 ; 4 ) ( Fig. 8) are designed with an extension ( 9 ) for fastening the supported parts ( 6 ) ( Fig. 7). The placement of the supported parts in space is determined by the angles (α; β; γ; δ) of the sectors ( 1 ; 2 ; 3 ; 4 ) ( Fig. 2). 4. A multi-leaf joint according to claim 3, characterized in that the displacement of each subsequent joint element along the pivot axis ( 5 ) with respect to its preceding joint element ( Fig. 14) by more than half the width (a) of the joint element results in the third joint element already creating an arc of more than 360° and the n-th joint element creating a spiral movement with respect to the first part. 5. Multi-plate joint according to claim 3, characterized in that
that at least one additional joint ( 11 ) can be attached to at least one link (1; 2; 3; 4; . . .; n) of the main joint (I) ( Fig. 16). The additional joint elements (7; 8; . . .; n) can be moved independently of the main joint elements.
that the slat shape and dimensions of the additional joint parts may differ from the slat shape and dimensions of the main joint parts.
that the number of additional joints can be infinite.