EP0467460A2 - Improved joint for securely connecting a leg to a table top - Google Patents
Improved joint for securely connecting a leg to a table top Download PDFInfo
- Publication number
- EP0467460A2 EP0467460A2 EP91201808A EP91201808A EP0467460A2 EP 0467460 A2 EP0467460 A2 EP 0467460A2 EP 91201808 A EP91201808 A EP 91201808A EP 91201808 A EP91201808 A EP 91201808A EP 0467460 A2 EP0467460 A2 EP 0467460A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- leg
- table top
- joint
- seat
- setscrew
- 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.)
- Granted
Links
Images
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
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
- A47B13/021—Fastening devices of the feet or legs
-
- 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
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
- A47B13/021—Fastening devices of the feet or legs
- A47B2013/022—Fastening devices of the feet or legs with detachable connection of a tubular leg
Definitions
- This invention relates to an improved metal joint, commonly known as a plate, for fixing cylindrical metal legs to a table top.
- the invention relates to a joint of the type described in Italian patent 1,028,018, to which reference should be made for further clarification.
- connection means should have a structure which besides being of relatively simple and economical manufacture does not require any complicated additional machining either at the top of the leg or within the table top, but which at the same time allows quick assembly of the table even by non-specialized personnel, hence enabling it to be despatched broken down into its separate parts in packages of minimum overall size, leading to great cost saving.
- the joint of the said patent 1,028,018 solves the aforesaid problems and consists of a single metal piece incorporating an expandable-wall boss (over which a tubular metal leg can be easily mounted), with the boss there being associated a circumferential flange with radial arms for fixing the joint to the table top by screws.
- the tubular leg After being mounted over the expandable boss the tubular leg is securely fixed in position by expanding the said walls, this expansion being achieved by tightening a radial setscrew incorporated into the joint and accessible through a hole provided in the leg.
- the point of the setscrew acts during its tightening on the opposing walls of the boss to expand them radially outwards so that they clamp the inner surface of the metal leg by friction.
- a joint system between tubular metal legs and a table top is hence obtained which requires no additional machining of the various parts during assembly, which can be achieved with no problem even by non-specialized personnel.
- the general object of the present invention is however to further improve this joint, particularly with regard to its manufacturing time and cost.
- the threaded seat which receives the wall expansion setscrew is formed by a separate operation involving drilling and tapping the body of the boss, which itself is produced in one piece together with the circumferential flange and radial arms by a die-casting operation.
- the drilling and tapping of the boss of the joint after its die-casting involves further handling and machining of the joint, so affecting its final cost.
- the specific object of the invention is to provide a joint of the aforedescribed type which is structured in such a manner as to be able to eliminate the said operation involving the drilling and tapping of the seat for the expansion setscrew for the boss walls.
- a joint for securely connecting a leg to a table top of the type comprising an expandable member insertable into the complementary hollow top of said leg, an expansion setscrew screwed into a threaded seat in said member and operable from the outside of the leg, and fixing means at the top of the expandable member for fixing the table top to it, characterised in that the seat for the setscrew consists of a plurality of internally threaded arcuate sections which are positioned mutually opposing and offset so as to define, within said tubular seat, apertures adjacent to each of said arcuate sections.
- the reference numeral 10 indicates overall the joint of the invention, consisting preferably of an aluminium metal casting comprising an expandable member in the form of a cylindrical boss 11, from the base of which there extends a circumferential flange 12 provided with two arms 13.
- the flange 12 together with the arms 13 is intended to be fixed by screws to a table top (not shown).
- the cylindrical lateral wall of said boss 11 comprises along generating lines a plurality of slits 14, they being three in number in the illustrated example, which extend into respective radial slits 15 through the base 16 on the opposite side to that from which said circumferential flange 12 extends.
- the slits 14, 15 are spaced equiangularly apart by 120 ⁇ , their purpose being to make the boss 11 relatively yieldable in an elastic manner.
- said tubular seat is formed of three arcuate sections 20, internally threaded as at 21, and positioned mutually opposing and offset to define an aperture 22. in this manner, said tubular seat, which is partially threaded internally, can be directly formed during the casting of the joint without the need for subsequent costly drilling and tapping of a solid part, as instead is required in the case of the joint of said patent No. 1,028,018.
Landscapes
- Furniture Connections (AREA)
- Tables And Desks Characterized By Structural Shape (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Casings For Electric Apparatus (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Connection Of Plates (AREA)
Abstract
Description
- This invention relates to an improved metal joint, commonly known as a plate, for fixing cylindrical metal legs to a table top.
- More specifically, the invention relates to a joint of the type described in Italian patent 1,028,018, to which reference should be made for further clarification.
- As is well known to the expert of the art, in order to securely fix a tubular metal leg to a table top it is necessary to provide an intermediate connection means between the leg and table top able to effect a fixing between the two parts which is solid and stable with time.
- In addition, considering current market requirements, such a connection means should have a structure which besides being of relatively simple and economical manufacture does not require any complicated additional machining either at the top of the leg or within the table top, but which at the same time allows quick assembly of the table even by non-specialized personnel, hence enabling it to be despatched broken down into its separate parts in packages of minimum overall size, leading to great cost saving.
- The joint of the said patent 1,028,018 solves the aforesaid problems and consists of a single metal piece incorporating an expandable-wall boss (over which a tubular metal leg can be easily mounted), with the boss there being associated a circumferential flange with radial arms for fixing the joint to the table top by screws.
- After being mounted over the expandable boss the tubular leg is securely fixed in position by expanding the said walls, this expansion being achieved by tightening a radial setscrew incorporated into the joint and accessible through a hole provided in the leg. In this respect, the point of the setscrew acts during its tightening on the opposing walls of the boss to expand them radially outwards so that they clamp the inner surface of the metal leg by friction.
- By loosening the setscrew the joint can be separated from the leg because of the elasticity of the walls of the boss.
- A joint system between tubular metal legs and a table top is hence obtained which requires no additional machining of the various parts during assembly, which can be achieved with no problem even by non-specialized personnel.
- The aforedescribed joint constructed in accordance with the said patent 1,028,018 has given perfectly satisfactory results.
- The general object of the present invention is however to further improve this joint, particularly with regard to its manufacturing time and cost.
- In this respect, the threaded seat which receives the wall expansion setscrew is formed by a separate operation involving drilling and tapping the body of the boss, which itself is produced in one piece together with the circumferential flange and radial arms by a die-casting operation.
- The drilling and tapping of the boss of the joint after its die-casting involves further handling and machining of the joint, so affecting its final cost.
- Consequently the specific object of the invention is to provide a joint of the aforedescribed type which is structured in such a manner as to be able to eliminate the said operation involving the drilling and tapping of the seat for the expansion setscrew for the boss walls.
- This object is attained according to the present invention by a joint for securely connecting a leg to a table top of the type comprising an expandable member insertable into the complementary hollow top of said leg, an expansion setscrew screwed into a threaded seat in said member and operable from the outside of the leg, and fixing means at the top of the expandable member for fixing the table top to it, characterised in that the seat for the setscrew consists of a plurality of internally threaded arcuate sections which are positioned mutually opposing and offset so as to define, within said tubular seat, apertures adjacent to each of said arcuate sections.
- The structural and operational characteristics of the invention and its advantages compared with the known art will be more apparent from the ensuing description given with reference to the accompanying drawings, which show a joint incorporating the inventive principles.
- In the drawings:
- Figure 1 is a top plan view showing the joint of the invention with the setscrew separate;
- Figure 2 is an elevational view of the joint of Figure 1;
- Figure 3 is a plan view from below; and
- Figure 4 is a section on the line IV-IV of Figure 3.
- In the drawings, the
reference numeral 10 indicates overall the joint of the invention, consisting preferably of an aluminium metal casting comprising an expandable member in the form of acylindrical boss 11, from the base of which there extends acircumferential flange 12 provided with twoarms 13. Theflange 12 together with thearms 13 is intended to be fixed by screws to a table top (not shown). - The cylindrical lateral wall of said
boss 11 comprises along generating lines a plurality ofslits 14, they being three in number in the illustrated example, which extend into respectiveradial slits 15 through thebase 16 on the opposite side to that from which saidcircumferential flange 12 extends. - The
slits boss 11 relatively yieldable in an elastic manner. - In the
base 16, between twosuccessive slits 15, there is a radial tubular seat into which there is screwed a polygonallyheaded setscrew 17 which terminates in anexpansion point 18 with a tapered lead-inpart 19. - Characteristically, according to the present invention, said tubular seat is formed of three
arcuate sections 20, internally threaded as at 21, and positioned mutually opposing and offset to define anaperture 22. in this manner, said tubular seat, which is partially threaded internally, can be directly formed during the casting of the joint without the need for subsequent costly drilling and tapping of a solid part, as instead is required in the case of the joint of said patent No. 1,028,018. - For the method of using the joint of the invention, reference should be made to the text and drawings of patent No. 1,028,018.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT9191201808T ATE105610T1 (en) | 1990-07-16 | 1991-07-11 | CONNECTING ELEMENT BETWEEN TABLE TOP AND TABLE LEG. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT21488U IT220012Z2 (en) | 1990-07-16 | 1990-07-16 | PERFECT JOINT FOR THE STABLE CONNECTION OF A LEG TO A TABLE TOP |
IT2148890U | 1990-07-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0467460A2 true EP0467460A2 (en) | 1992-01-22 |
EP0467460A3 EP0467460A3 (en) | 1992-08-05 |
EP0467460B1 EP0467460B1 (en) | 1994-05-11 |
Family
ID=11182564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91201808A Expired - Lifetime EP0467460B1 (en) | 1990-07-16 | 1991-07-11 | Improved joint for securely connecting a leg to a table top |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0467460B1 (en) |
AT (1) | ATE105610T1 (en) |
DE (1) | DE69101950T2 (en) |
ES (1) | ES2053273T3 (en) |
IT (1) | IT220012Z2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4417341A1 (en) * | 1994-05-18 | 1995-11-23 | Stoll Kg Christof | Clamp fastening for a pipe, in particular a pedestal on a table top |
AT814U1 (en) * | 1995-02-24 | 1996-06-25 | Hali Bueromoebel Gmbh | TABLE FITTING |
AT1115U1 (en) * | 1995-12-06 | 1996-11-25 | Svoboda Entwicklung | LENGTH ADJUSTABLE FOOT |
FR2738467A1 (en) * | 1995-09-13 | 1997-03-14 | Marcadet Mobilier | Table with alignable leg on inclined pivoting arm |
EP0972466A2 (en) | 1998-07-17 | 2000-01-19 | LEONARDO S.r.l. | Improved device for connecting a leg to a table top |
EP1208768A1 (en) | 2000-11-23 | 2002-05-29 | LEONARDO S.r.l. | Multi-use joint for the connection of a leg to a table surface |
EP1210885A1 (en) * | 2000-11-23 | 2002-06-05 | LEONARDO S.r.l. | Manufacturing process of a joint for connecting a leg to a table surface and joint obtained therewith |
EP1279353A1 (en) * | 2001-07-25 | 2003-01-29 | LEONARDO S.r.l. | Expandable connector for a leg with an adaptable attachment to a work surface |
US6892435B2 (en) | 2000-11-23 | 2005-05-17 | Leonardo S.R.L. | Manufacturing process of a joint for connecting a leg to a table surface |
GB2441966A (en) * | 2006-09-20 | 2008-03-26 | Nelson Cho | Furniture support with detachable legs |
EP2169240A1 (en) * | 2008-09-26 | 2010-03-31 | B+W Stuhl-Tisch Zentrum International GmbH | Profile construction for furniture and use of a profile construction for furniture |
EP2243969A1 (en) | 2009-04-24 | 2010-10-27 | LEONARDO S.r.l. | Connection group between a leg and a shelf of a piece of furniture |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2466965A1 (en) * | 1979-10-09 | 1981-04-17 | Serpi | Leg for rotary furniture - has central base tube with radial arms, and spacer nuts and screws |
-
1990
- 1990-07-16 IT IT21488U patent/IT220012Z2/en active IP Right Grant
-
1991
- 1991-07-11 EP EP91201808A patent/EP0467460B1/en not_active Expired - Lifetime
- 1991-07-11 AT AT9191201808T patent/ATE105610T1/en not_active IP Right Cessation
- 1991-07-11 DE DE69101950T patent/DE69101950T2/en not_active Expired - Lifetime
- 1991-07-11 ES ES91201808T patent/ES2053273T3/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2466965A1 (en) * | 1979-10-09 | 1981-04-17 | Serpi | Leg for rotary furniture - has central base tube with radial arms, and spacer nuts and screws |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4417341A1 (en) * | 1994-05-18 | 1995-11-23 | Stoll Kg Christof | Clamp fastening for a pipe, in particular a pedestal on a table top |
AT814U1 (en) * | 1995-02-24 | 1996-06-25 | Hali Bueromoebel Gmbh | TABLE FITTING |
FR2738467A1 (en) * | 1995-09-13 | 1997-03-14 | Marcadet Mobilier | Table with alignable leg on inclined pivoting arm |
AT1115U1 (en) * | 1995-12-06 | 1996-11-25 | Svoboda Entwicklung | LENGTH ADJUSTABLE FOOT |
EP0972466A2 (en) | 1998-07-17 | 2000-01-19 | LEONARDO S.r.l. | Improved device for connecting a leg to a table top |
EP1210885A1 (en) * | 2000-11-23 | 2002-06-05 | LEONARDO S.r.l. | Manufacturing process of a joint for connecting a leg to a table surface and joint obtained therewith |
EP1208768A1 (en) | 2000-11-23 | 2002-05-29 | LEONARDO S.r.l. | Multi-use joint for the connection of a leg to a table surface |
US6892435B2 (en) | 2000-11-23 | 2005-05-17 | Leonardo S.R.L. | Manufacturing process of a joint for connecting a leg to a table surface |
EP1279353A1 (en) * | 2001-07-25 | 2003-01-29 | LEONARDO S.r.l. | Expandable connector for a leg with an adaptable attachment to a work surface |
CN100434015C (en) * | 2001-07-25 | 2008-11-19 | 莱奥纳多有限责任公司 | Expandable conector with adaptive connecting part leg connected with top of bench |
GB2441966A (en) * | 2006-09-20 | 2008-03-26 | Nelson Cho | Furniture support with detachable legs |
GB2441966B (en) * | 2006-09-20 | 2011-06-15 | Nelson Cho | Detachable supporting framework |
EP2169240A1 (en) * | 2008-09-26 | 2010-03-31 | B+W Stuhl-Tisch Zentrum International GmbH | Profile construction for furniture and use of a profile construction for furniture |
EP2243969A1 (en) | 2009-04-24 | 2010-10-27 | LEONARDO S.r.l. | Connection group between a leg and a shelf of a piece of furniture |
RU2531739C2 (en) * | 2009-04-24 | 2014-10-27 | Леонардо С.р.Л. | Connecting unit between leg and shelf of furniture |
Also Published As
Publication number | Publication date |
---|---|
EP0467460B1 (en) | 1994-05-11 |
IT9021488U1 (en) | 1992-01-16 |
IT220012Z2 (en) | 1993-06-03 |
IT9021488V0 (en) | 1990-07-16 |
DE69101950T2 (en) | 1994-11-03 |
EP0467460A3 (en) | 1992-08-05 |
DE69101950D1 (en) | 1994-06-16 |
ES2053273T3 (en) | 1994-07-16 |
ATE105610T1 (en) | 1994-05-15 |
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