CA2114767A1 - Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables - Google Patents
Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tablesInfo
- Publication number
- CA2114767A1 CA2114767A1 CA 2114767 CA2114767A CA2114767A1 CA 2114767 A1 CA2114767 A1 CA 2114767A1 CA 2114767 CA2114767 CA 2114767 CA 2114767 A CA2114767 A CA 2114767A CA 2114767 A1 CA2114767 A1 CA 2114767A1
- Authority
- CA
- Canada
- Prior art keywords
- joint
- tubular elements
- cavities
- face
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B47/00—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements
- A47B47/0016—Node corner connectors, e.g. cubic
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B43/00—Cabinets, racks or shelf units, characterised by features enabling folding of the cabinet or the like
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0068—Modular articulated structures, e.g. stands, and articulation means therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Assembled Shelves (AREA)
Abstract
The joint is constituted by a block with an essentially square shape that on one of its larger faces has at least two cavities for receiving and hinging respective tubular elements and of a width substantially equal to the diameter of the tubular elements. The opposite face of the joint is flat and two or more pawls with an enlarged head protrude therefrom that can be used for coupling to suitable slots obtained in a panel with a matching surface for the reciprocal suspension of the joint and of the panel, for example for a display unit of various products.
Description
2~1~767 -"Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables."
* * * * *
The present invention relates to an articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables.
The main object of the present invention is to provide an articulation joint for tubular elements that allows the articulation one with another of one or more tubular elements that can move in different planes so as to ensure the perfect rotation of the tubular elements in the planes where they belong without any undesired oscillations in a direction perpendicular to the abovementioned planes.
Another object is to provide an articulation joint of the abovementioned type that can also be used for the rigid coupling of a tubular element.
Another object is to provide an articulation joint that also allows the sliding coupling of a tubular element.
According to the invention such objects are attained with an articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables, characterized in that it comprises a block with a substantially square shape that on one of its larger faces has at least two cavities for receiving and hinging respective tubular elements, said cavities being of a width substantially equal to the diameter of the tubular elements.
Preferably these cavities are four, open toward respective lateral walls of the square block, so as to allow the articulated coupling of four tubular elements extending at 90 to one another. In addition these cavities are open toward respective minor sides of the square block, perpendicular to one another, so that it is possible to accomplish the articulation of a similar number of tubuLar elements movable in planes perpendicular one to another.
Another characteristic of the invention is that from the face provided with cavities there extends a central tang surrounded by an annular space that extends to the proximity of the opposite face of the joint. The tang and the respective annular space allow rigid coupling of the joint to an extremity of a tubular element, that in that case extends perpendicularly to the abovementioned face of the joint.
If desired, the limited thickness of the abovementioned opposite face of the joint allows drilling of the face itself so that the tang is removed and provision of a passing hole that may be used for the sliding coupling of the joint with a tubular element.
Preferably the abovementioned opposite face of the joint is flat and two or more pawls with an enlarged head protrude therefrom that can be used for coupling to suitable slots obtained in a panel with a matching surface for the reciprocal suspension of the joint and of the panel, for example for a display unit of various products.
A joint made in this way can be used for innumerable purposes, in particularly for the construction of foldable articulated structures.
One of such possible uses is illustrated as a non-limiting example in the enclosed drawings, wherein:
Fig. 1 is a front view of the joint with tubular elements applied;
Fig. 2 is a cross-setion of Fig. 1 taken along the Line II-II;
Fig. 3 is a view of the joint from the rear;
Fig. 4 is a lateral view of the joint;
Fig. 5 is a lateral view of the joint with tubular elements applied;
Fig. 6 is a cross-sectional view of the joint with a rigid coupling of a tubular element on a central tang of the joint;
Fig. 7 is a cross-sectional view of the joint with the central tang removed and a passing tubular element;
Fig. 8 is a perspective view of a structure with tubular elements for a foldable shelf that uses articulation joints according to the invention;
Fig. 9 shows said structure in a vertical cross-section taken along the line IX-IX of Fig. 8;
Fig. 1C shows said structure in a horizontal cross-section taken along the line X-X of Fig. 8;
Fig. 11 shows a front view of the central part of the abovementioned structure.
With reference to Figs. 1-7, an articulation joint for tubular elements indicated as a whole with 1 comprises a block 2 having a substantially square shape with a larger face 3, an opposite larger face 4 having a flat shape and four lateral walls 5 arranged at 90 to one another.
In the larger face 3 there are four cavities 6 open toward the lateral walls 5 of the block 2. Such cavities are suitable for receiving tubular eLements 7 with a corresponding diameter, that can be clamped in position in an articulated manner by means of hinging pivots 8. The pivots 8 are introduced into the cavities 6 through corresponding holes 9 in the lateral walls 5.
As illustrated in Figs. 1, 2, 5 and 6 a central tang 10 surrounded by an annular cavity 11 extending to the proximity of the opposite larger face 4 of the joint protrudes from the larger face 3.
As illustrated in Fig. 6, the tang 10 and the corresponding annular space 11 make it possible to attain a rigid coupling of the joint 1 to an extremity of a central tubular element 12 that in that case extends perpendicularly to the larger face 3 of the joint 1.
As illustrated in Fig. 7, the thinness of the wall 4 at the annular space 11 makes it possible to remove the tang 10 for the accomplishment of a passing hole 17 suitable for the sliding coupling of the joint with the central tubular element 12.
With reference to Figs. 2-7, small pawls 13 with an enlarged head for coupling with suitably shaped slots of panels not illustrated, provided with a surface matching with the face 4, protrude from the flat face 4.
Z0 As illustrated in Figs. 1, 2, 5, 6, 7, the tubular elements 7 can be inclined in any position in the plane where they belong inside the cavities 6.
There is represented in Figs. 8-11 a tubular element structure that can be made with the articulation joints 1 of Figs. 1-7. It is constituted by pairs of tubular elements 7 articulated at the centre with a pivot 16 and with extremities inserted rotatably in corresponding cavities 6 of joints 1.
Such pairs of tubular elements 7 identify planes that are parallel and perpendicular, respectively, to the floor. Shelves 15 are place on the pairs of tubular elements 7 arranged in planes parallel to the floor, that maintain the structure in the assembled condition of Fig. 8. When the shelves 15 are removed, the structure can be folded in a position where it has a minimum size, exploiting the articulation provided by the points 1 and by the pivots 16.
* * * * *
The present invention relates to an articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables.
The main object of the present invention is to provide an articulation joint for tubular elements that allows the articulation one with another of one or more tubular elements that can move in different planes so as to ensure the perfect rotation of the tubular elements in the planes where they belong without any undesired oscillations in a direction perpendicular to the abovementioned planes.
Another object is to provide an articulation joint of the abovementioned type that can also be used for the rigid coupling of a tubular element.
Another object is to provide an articulation joint that also allows the sliding coupling of a tubular element.
According to the invention such objects are attained with an articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables, characterized in that it comprises a block with a substantially square shape that on one of its larger faces has at least two cavities for receiving and hinging respective tubular elements, said cavities being of a width substantially equal to the diameter of the tubular elements.
Preferably these cavities are four, open toward respective lateral walls of the square block, so as to allow the articulated coupling of four tubular elements extending at 90 to one another. In addition these cavities are open toward respective minor sides of the square block, perpendicular to one another, so that it is possible to accomplish the articulation of a similar number of tubuLar elements movable in planes perpendicular one to another.
Another characteristic of the invention is that from the face provided with cavities there extends a central tang surrounded by an annular space that extends to the proximity of the opposite face of the joint. The tang and the respective annular space allow rigid coupling of the joint to an extremity of a tubular element, that in that case extends perpendicularly to the abovementioned face of the joint.
If desired, the limited thickness of the abovementioned opposite face of the joint allows drilling of the face itself so that the tang is removed and provision of a passing hole that may be used for the sliding coupling of the joint with a tubular element.
Preferably the abovementioned opposite face of the joint is flat and two or more pawls with an enlarged head protrude therefrom that can be used for coupling to suitable slots obtained in a panel with a matching surface for the reciprocal suspension of the joint and of the panel, for example for a display unit of various products.
A joint made in this way can be used for innumerable purposes, in particularly for the construction of foldable articulated structures.
One of such possible uses is illustrated as a non-limiting example in the enclosed drawings, wherein:
Fig. 1 is a front view of the joint with tubular elements applied;
Fig. 2 is a cross-setion of Fig. 1 taken along the Line II-II;
Fig. 3 is a view of the joint from the rear;
Fig. 4 is a lateral view of the joint;
Fig. 5 is a lateral view of the joint with tubular elements applied;
Fig. 6 is a cross-sectional view of the joint with a rigid coupling of a tubular element on a central tang of the joint;
Fig. 7 is a cross-sectional view of the joint with the central tang removed and a passing tubular element;
Fig. 8 is a perspective view of a structure with tubular elements for a foldable shelf that uses articulation joints according to the invention;
Fig. 9 shows said structure in a vertical cross-section taken along the line IX-IX of Fig. 8;
Fig. 1C shows said structure in a horizontal cross-section taken along the line X-X of Fig. 8;
Fig. 11 shows a front view of the central part of the abovementioned structure.
With reference to Figs. 1-7, an articulation joint for tubular elements indicated as a whole with 1 comprises a block 2 having a substantially square shape with a larger face 3, an opposite larger face 4 having a flat shape and four lateral walls 5 arranged at 90 to one another.
In the larger face 3 there are four cavities 6 open toward the lateral walls 5 of the block 2. Such cavities are suitable for receiving tubular eLements 7 with a corresponding diameter, that can be clamped in position in an articulated manner by means of hinging pivots 8. The pivots 8 are introduced into the cavities 6 through corresponding holes 9 in the lateral walls 5.
As illustrated in Figs. 1, 2, 5 and 6 a central tang 10 surrounded by an annular cavity 11 extending to the proximity of the opposite larger face 4 of the joint protrudes from the larger face 3.
As illustrated in Fig. 6, the tang 10 and the corresponding annular space 11 make it possible to attain a rigid coupling of the joint 1 to an extremity of a central tubular element 12 that in that case extends perpendicularly to the larger face 3 of the joint 1.
As illustrated in Fig. 7, the thinness of the wall 4 at the annular space 11 makes it possible to remove the tang 10 for the accomplishment of a passing hole 17 suitable for the sliding coupling of the joint with the central tubular element 12.
With reference to Figs. 2-7, small pawls 13 with an enlarged head for coupling with suitably shaped slots of panels not illustrated, provided with a surface matching with the face 4, protrude from the flat face 4.
Z0 As illustrated in Figs. 1, 2, 5, 6, 7, the tubular elements 7 can be inclined in any position in the plane where they belong inside the cavities 6.
There is represented in Figs. 8-11 a tubular element structure that can be made with the articulation joints 1 of Figs. 1-7. It is constituted by pairs of tubular elements 7 articulated at the centre with a pivot 16 and with extremities inserted rotatably in corresponding cavities 6 of joints 1.
Such pairs of tubular elements 7 identify planes that are parallel and perpendicular, respectively, to the floor. Shelves 15 are place on the pairs of tubular elements 7 arranged in planes parallel to the floor, that maintain the structure in the assembled condition of Fig. 8. When the shelves 15 are removed, the structure can be folded in a position where it has a minimum size, exploiting the articulation provided by the points 1 and by the pivots 16.
Claims (4)
1. Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables, characterized in that it comprises a block with a substantially square shape that on one of its larger faces has at least two cavities for receiving and hinging respective tubular elements, said cavities being of a width substantially equal to the diameter of the tubular elements
2 Articulation joint according to claim 1, characterized in that said cavities are four, open toward respective lateral walls of the square block, so as to allow the articulated coupling of four tubular elements extending at 90° to one another
3 Articulation joint according to claim 1, characterized in that from the face provided with cavities there extends a central tang surrounded by an annular space that extends to the proximity of the opposite face of the joint, said tang and the corresponding annular space allowing rigid coupling of the joint to an extremity of a tubular element that extends perpendicularly to the abovementioned face of the joint
4 Joint according to claim 3, characterized in that said opposite face has a limited thickness at said annular space, which thickness can be drilled for the removal of the tang and the provision of a passing hole that can be used for the sliding coupling of the joint with a tubular element.
Joint according to claim 1, characterized in that it comprises an opposite larger face having a flat shape, from which at least two pawls with an enlarged head protrude that can be used for coupling to slots obtained in a panel with a matching surface for the reciprocal suspension of the joint and of the panel.
Joint according to claim 1, characterized in that it comprises an opposite larger face having a flat shape, from which at least two pawls with an enlarged head protrude that can be used for coupling to slots obtained in a panel with a matching surface for the reciprocal suspension of the joint and of the panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2114767 CA2114767A1 (en) | 1994-02-02 | 1994-02-02 | Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2114767 CA2114767A1 (en) | 1994-02-02 | 1994-02-02 | Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2114767A1 true CA2114767A1 (en) | 1995-08-03 |
Family
ID=4152834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2114767 Abandoned CA2114767A1 (en) | 1994-02-02 | 1994-02-02 | Articulation joint for tubular elements, particularly for foldable structures such as shelves, chairs, tables |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2114767A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884425A1 (en) * | 1997-06-12 | 1998-12-16 | Gilberto Braghieri | Vertical extension collapsible bearing structure, particularly for platforms and floor boarding |
| WO2000075451A1 (en) * | 1999-06-04 | 2000-12-14 | Owl Video Systems Limited | Panel and panel system |
| US10431130B2 (en) * | 2015-12-10 | 2019-10-01 | Atomic Design Inc. | Display system |
-
1994
- 1994-02-02 CA CA 2114767 patent/CA2114767A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884425A1 (en) * | 1997-06-12 | 1998-12-16 | Gilberto Braghieri | Vertical extension collapsible bearing structure, particularly for platforms and floor boarding |
| WO2000075451A1 (en) * | 1999-06-04 | 2000-12-14 | Owl Video Systems Limited | Panel and panel system |
| US10431130B2 (en) * | 2015-12-10 | 2019-10-01 | Atomic Design Inc. | Display system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |