WO2002074396A1 - Angular connection device for tubular frames, particularly frames for sporting uses - Google Patents

Angular connection device for tubular frames, particularly frames for sporting uses Download PDF

Info

Publication number
WO2002074396A1
WO2002074396A1 PCT/IB2002/000823 IB0200823W WO02074396A1 WO 2002074396 A1 WO2002074396 A1 WO 2002074396A1 IB 0200823 W IB0200823 W IB 0200823W WO 02074396 A1 WO02074396 A1 WO 02074396A1
Authority
WO
WIPO (PCT)
Prior art keywords
crossbar
hole
stud
pin
correspondence
Prior art date
Application number
PCT/IB2002/000823
Other languages
French (fr)
Inventor
Graziano Michelacci
Original Assignee
Butaz International S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Butaz International S.A. filed Critical Butaz International S.A.
Priority to EP02722527A priority Critical patent/EP1395343A1/en
Publication of WO2002074396A1 publication Critical patent/WO2002074396A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B63/00—Targets or goals for ball games
    • A63B63/004—Goals of the type used for football, handball, hockey or the like

Definitions

  • the present invention relates to modular tubular structures and in particular to an angular connection device for tubular frame, particularly for frame for sporting uses, for instance tubular frame of doors for football, soccer, handball, hockey, and the like.
  • connection devices usually provide angular connections between two tubular elements, for instance a stud and a crossbar, by means of connectors or angular joints or other external jointing elements of the two tubular elements.
  • the connectors or angular joints can be of internal type, that means they can be inserted inside the tubular cavities of studs and crossbars, or can be of external type, for housing the ends of the two elements to be connected.
  • blocking elements for instance screws, are needed in order to fix the connection between the angular joints and the tubular elements.
  • the main drawback of the known devices consists in that they usually include dangerous elements outwards protruding.
  • Other drawback of the known devices consists in that they are usually metallic, thus heavy and subjects to oxidation.
  • Another drawback consists in that they can be disassembled in consequence of collisions or heavy stress, exposing potentially dangerous protruding portions.
  • the main object of the present invention is to propose an angular connection device easy to carry out, including few elements for firmly fixing the ends of the tubular elements.
  • Another object is to propose a device which can be easily and quickly assembled and disassembled, light and, therefore, easily movable. Further object is to propose a safety device, fit to resist to collisions and stress and not including dangerous elements, such as protruding elements. Other object is to propose a device fit to guarantee a suitable blocking even after several disassembling and assembling cycles.
  • FIG. 1A shows a partial front view of the device object of the present invention in an assembled condition
  • figure IB shows a partial section side view of the figure 1 A device
  • figure 2A shows a partial front section view of a first variant of the device of figure 1A
  • figure 2B shows a partial section view of the figure 2 A device
  • FIG. 3 A and 3B show respectively a partial front section view and a partial side section view of a second variant of the device
  • FIG. 4A and 4B show respectively a partial front section view and a partial side section view of a third variant of the device
  • FIG. 5 A and 5B show partial side section views of the device of figure 1A, in association with studs and crossbars of different type;
  • FIG. 5C shows a partial side section view of the figure 4 A device, in association with stud and crossbar of different type;
  • - figure 6 shows a longitudinal section view of a variant of the device of the present invention
  • figure 7 shows a section view according to the plain VII-VII of figure 6.
  • numeral 1 indicates an angular connection device for tubular frames, particularly for sporting use, for a crossbar 3 and a stud 2, including a through hole 7, carried out in the crossbar 3 in proximity of one of its end portion and orthogonal to the axis of said crossbar.
  • the device further includes a concave seat 8, carried out in con-espondence of an end of the stud 2 and having a shape complementary to the external profile of the end portion of the crossbar 3.
  • the device includes a first transversal through hole 9, having an axis orthogonal to the axis of said stud and carried out in the stud 2, in proximity of the seat 8 for housing a first pin 5.
  • a fixing mean 6, for instance a screw, has a head end which engage a portion of the inner surface of the tubular crossbar 3, the remaining end engages an housing 11 of the first pin 5, constituted for instance by a threaded through hole or a nut thread.
  • the angular connection device is assembled, in correspondence of an assembling condition M, by inserting the first pin 5 in the first transversal through hole 9 and by fixing the end portion of the crossbar 3 on the concave seat 8 by means of the screw fixing mean 6 which engages the threaded hole 11, passing through the through hole 7.
  • a variant of the device, shown in figures 2A-3B and 5A, provides the crossbar 3 internally including at least a stiffening mean 13 rigidly connected to said crossbar 3, for instance by glueing, and having a through hole coaxial to the through hole 7. Said stiffening mean 13
  • ⁇ has a shape complementary to the inner wall of the end portion of the crossbar 3 and can be a tubular element 13a or a tubular portion 13b or a sector 13c with a flat face.
  • a further variant of the device shown in the figures 4A and 4B, provides that the crossbar 3 has a second transversal through hole 10, whose axis is usually orthogonal to the axis of the crossbar 3 and is coplanar and perpendicular to the axis of the through hole 7.
  • a second pin 4 is inserted into said second transversal through hole 10, said pin having a hole or through seat 12 to which the screw fixing mean 6 is engaged.
  • the through seat 12 is aligned with the through hole 7 and with the through hole 11.
  • the assemblage of the device is carried out by reciprocally tightening the two pins, first 5 and second 4, acting on said screw fixing mean 6.
  • the crossbar has a breakthrough hole 15, coaxial to the through hole 7.
  • Both the crossbar 3 and the stud 2 and the stiffening means 13 usually are made of metallic material, for instance aluminum, or plastic reinforced by fiber glass or other composite plastic material, or reinforced resin.
  • crossbar 3 and the stud 2 have a plurality of stiffening longitudinal ribs 16, usually positioned on the inner surfaces, and have circular, or ellipsoidal or rectangular section.
  • the variant shown in the figures 6, 7 provides that the crossbar 3 and the stud 2 have end faced in a complementary way being, for instance, both cut with an angle of 45° or others complementary angles.
  • the joining line between the transversal through holes first 9 and second 10 form an oblique angle, for instance of 45°, with respect to the axis of said stud 2 and crossbar 3.
  • the ends of the crossbar 3 and stud 2 are internally engaged with two angular means 20, 21 by means of corresponding guides 22, for instance "L" shaped, carried out in correspondence of the inner walls of the crossbar 3 and stud 2. It is provided that the angular means 20, 21 are made in metallic material or in strengthened synthetic material.
  • the first pin 5 has in correspondence of a first end a transversal through hole engaged by an elastic pin 23 fit to avoid the axial disengagement of the first pin 5 from the stud 2.
  • the second pin 10 has in correspondence of a first end a similar transversal through hole engaged by the elastic pin.
  • the stud 2 or the crossbar 3 or both, are provided with a hole 24 fit for housing a bush 25 which is a guide for the movement of the fixing means 6 and for the tool used for screw or unscrew these latter.
  • the main advantage of the present, invention is to provide an angular connection device easy to cany out, including few elements for firmly fixing the ends of the tubular elements.

Abstract

An angular connection device for tubular frames particularly for sporting use, for a crossbar (3) and a stud (2) includes: - a through hole (7) carried out in proximity of an end of the crossbar (3); - a concave seat (8) carried out in correspondence of an end of the stud (2), having shape complementary to the external profile of the end portion of the crossbar (3); - a first transversal through hole (9) carried out in the stud (2) in proximity of the seat (8) fit for housing a first pin (5) provided with a housing (11); - a fixing mean (6) to engage the housing (11) through the through hole (7) in correspondence of an assembled condition (M) of the device (1), in which the first pin (5) is inserted in the first transversal through hole (9) and the end portion of the crossbar (3) is fixed in correspondence of the concave seat (8).

Description

ANGULAR CONNECTION DEVICE FOR TUBULAR FRAMES,
PARTICULARLY FRAMES FOR SPORTING USES
TECHNICAL FIELD
The present invention relates to modular tubular structures and in particular to an angular connection device for tubular frame, particularly for frame for sporting uses, for instance tubular frame of doors for football, soccer, handball, hockey, and the like.
BACKGROUND ART
The known connection devices usually provide angular connections between two tubular elements, for instance a stud and a crossbar, by means of connectors or angular joints or other external jointing elements of the two tubular elements.
The connectors or angular joints can be of internal type, that means they can be inserted inside the tubular cavities of studs and crossbars, or can be of external type, for housing the ends of the two elements to be connected.
In case of internal joints, these latter usually are made of metal, since they must guarantee a suitable resistance and solidity, with small dimensions.
Furthermore blocking elements, for instance screws, are needed in order to fix the connection between the angular joints and the tubular elements.
The main drawback of the known devices consists in that they usually include dangerous elements outwards protruding. Other drawback of the known devices consists in that they are usually metallic, thus heavy and subjects to oxidation. Another drawback consists in that they can be disassembled in consequence of collisions or heavy stress, exposing potentially dangerous protruding portions. DISCLOSURE OF THE INVENTION
The main object of the present invention is to propose an angular connection device easy to carry out, including few elements for firmly fixing the ends of the tubular elements.
Other object is to propose a device which can be easily and quickly assembled and disassembled, light and, therefore, easily movable. Further object is to propose a safety device, fit to resist to collisions and stress and not including dangerous elements, such as protruding elements. Other object is to propose a device fit to guarantee a suitable blocking even after several disassembling and assembling cycles.
The above-mentioned object are achieved according to the content of the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The characteristics of the invention are underlined in the following with particular reference with the attached drawings, in which:
- figure 1A shows a partial front view of the device object of the present invention in an assembled condition;
- figure IB shows a partial section side view of the figure 1 A device;
- figure 2A shows a partial front section view of a first variant of the device of figure 1A;
- figure 2B shows a partial section view of the figure 2 A device;
- figures 3 A and 3B show respectively a partial front section view and a partial side section view of a second variant of the device;
- figures 4A and 4B show respectively a partial front section view and a partial side section view of a third variant of the device;
- figures 5 A and 5B show partial side section views of the device of figure 1A, in association with studs and crossbars of different type;
- figure 5C shows a partial side section view of the figure 4 A device, in association with stud and crossbar of different type; - figure 6 shows a longitudinal section view of a variant of the device of the present invention;
- figure 7 shows a section view according to the plain VII-VII of figure 6.
BEST MODE OF CARRYING OUT THE INVENTION
With reference to figures 1A-3B, numeral 1 indicates an angular connection device for tubular frames, particularly for sporting use, for a crossbar 3 and a stud 2, including a through hole 7, carried out in the crossbar 3 in proximity of one of its end portion and orthogonal to the axis of said crossbar.
The device further includes a concave seat 8, carried out in con-espondence of an end of the stud 2 and having a shape complementary to the external profile of the end portion of the crossbar 3.
The device includes a first transversal through hole 9, having an axis orthogonal to the axis of said stud and carried out in the stud 2, in proximity of the seat 8 for housing a first pin 5. A fixing mean 6, for instance a screw, has a head end which engage a portion of the inner surface of the tubular crossbar 3, the remaining end engages an housing 11 of the first pin 5, constituted for instance by a threaded through hole or a nut thread.
The angular connection device is assembled, in correspondence of an assembling condition M, by inserting the first pin 5 in the first transversal through hole 9 and by fixing the end portion of the crossbar 3 on the concave seat 8 by means of the screw fixing mean 6 which engages the threaded hole 11, passing through the through hole 7.
A variant of the device, shown in figures 2A-3B and 5A, provides the crossbar 3 internally including at least a stiffening mean 13 rigidly connected to said crossbar 3, for instance by glueing, and having a through hole coaxial to the through hole 7. Said stiffening mean 13
■ has a shape complementary to the inner wall of the end portion of the crossbar 3 and can be a tubular element 13a or a tubular portion 13b or a sector 13c with a flat face.
A further variant of the device, shown in the figures 4A and 4B, provides that the crossbar 3 has a second transversal through hole 10, whose axis is usually orthogonal to the axis of the crossbar 3 and is coplanar and perpendicular to the axis of the through hole 7. A second pin 4 is inserted into said second transversal through hole 10, said pin having a hole or through seat 12 to which the screw fixing mean 6 is engaged. In the assembled condition M the through seat 12 is aligned with the through hole 7 and with the through hole 11. In this variant the assemblage of the device is carried out by reciprocally tightening the two pins, first 5 and second 4, acting on said screw fixing mean 6.
In order to make easier the assemblage of the connection device and, particularly, in order to insert and operate on the screw fixing mean 6, the crossbar has a breakthrough hole 15, coaxial to the through hole 7.
Both the crossbar 3 and the stud 2 and the stiffening means 13 usually are made of metallic material, for instance aluminum, or plastic reinforced by fiber glass or other composite plastic material, or reinforced resin.
Furthermore it is provided that the crossbar 3 and the stud 2 have a plurality of stiffening longitudinal ribs 16, usually positioned on the inner surfaces, and have circular, or ellipsoidal or rectangular section.
The variant shown in the figures 6, 7 provides that the crossbar 3 and the stud 2 have end faced in a complementary way being, for instance, both cut with an angle of 45° or others complementary angles. The joining line between the transversal through holes first 9 and second 10 form an oblique angle, for instance of 45°, with respect to the axis of said stud 2 and crossbar 3.
The ends of the crossbar 3 and stud 2 are internally engaged with two angular means 20, 21 by means of corresponding guides 22, for instance "L" shaped, carried out in correspondence of the inner walls of the crossbar 3 and stud 2. It is provided that the angular means 20, 21 are made in metallic material or in strengthened synthetic material.
In the preferred embodiment, and in the variants of the device 1 as well, the first pin 5 has in correspondence of a first end a transversal through hole engaged by an elastic pin 23 fit to avoid the axial disengagement of the first pin 5 from the stud 2.
Similarly, the second pin 10 has in correspondence of a first end a similar transversal through hole engaged by the elastic pin. The stud 2 or the crossbar 3 or both, are provided with a hole 24 fit for housing a bush 25 which is a guide for the movement of the fixing means 6 and for the tool used for screw or unscrew these latter.
It must be underlined that, in case of frames for sporting use, for instance doors for football or handball, the angular connection devices above described, as the whole frame, can be coated by a covering made of polyethylene or foam polyurethane for the protection of the users.
The main advantage of the present, invention is to provide an angular connection device easy to cany out, including few elements for firmly fixing the ends of the tubular elements.
Other advantage is to provide a device which can be easily and quicldy assembled and disassembled, since needing a single screw blocking element for each angular connection, light and thus easily movable. Further advantage is to provide a safety device, fit to resist to collisions and stress and not including dangerous elements, such as protruding elements, when the device is accidentally disassembled.
Other advantage is to provide a device fit to guarantee a suitable blocking even after several disassembling and assembling cycles.

Claims

1) Angular connection device for tubu'ar frames, particularly for sporting use, for at least a crossbar (3) and at least a stud (2) characterized in that includes: - a through hole (7) carried out in proximity of an end of the crossbar (3); a concave seat (8) carried out in correspondence of an end of the stud (2), having shape complementary to the external profile of the end portion of the crossbar (3); a first transversal through hole (9) carried out in the stud (2) in proximity of the seat (8) fit for housing a first pin (5) provided with a housing (11); - a fixing mean (6) fit to engage the housing (11) through the through hole (7) in correspondence of an assembled condition (M) of the device (1), in which the first pin (5) is inserted in the first transversal through hole (9) and the end portion of the crossbar (3) is fixed in correspondence of the concave seat (8).
2) Device according to claim 1 characterized in that at least the crossbar (3) internally includes at least a stiffening mean (13) rigidly connected to said crossbar (3) and having a hole facing the through hole (7).
3) Device according to claim 2 characterized in that the stiffening mean (13) has shape complementary to the inner wall of the end portion of the crossbar (3) of the type with tubular element (13a), or tubular portion (13b), or sector with a flat face (13c).
4) Device according to claim 1 characterized in that the crossbar (3) has a second transversal through hole (10) for housing a second pin (4) having a through seat (12) for the fixing mean (6) aligned to the through hole (7).
5) Device according to claim 1 characterized in that the crossbar (3) has a breakthrough hole (15) almost at least coaxial to the through hole (7).
6) Device according to any of the preceding claims characterized in that the tubular crossbar (3) and the tubular stud (2) are made of metallic material, preferably aluminum, or plastic reinforced by fiber glass or composite plastic material.
7) Device according to any of the pieceding claims characterized in that at least the tubular crossbar (3) and the tubular stud (2) are coated by a covering layer made of polyethylene or foam polyurethane, in correspondence of the assembled condition M.
8) Device according to claim 2 or claim 3 characterized in that the stiffening mean (13) is made of metallic material, preferably aluminum, or plastics, or reinforced resin.
9) Device according to claim 1 characterized in that at least one between the crossbar (3) and the stud (2) include a plurality of longitudinal stiffening ribs (16).
10) Device according to the claim 1 characterized in that at least one between the crossbar (3) and the stud (2) have circular, or ellipsoidal or rectangular section.
11) Device according to claim 1 characterized in that the housing (11) is a through hole and the fixing mean (6) is a screw.
12) Device according to claim 4 characterized in that the crossbar (3) and the stud (2) have facing ends in a complementary way and the line joining the transversal through holes first (9) and second (10) form an oblique angle with respect to the axis of said stud (2) and crossbar (3).
13) Device according to claim 11 characterized in that the ends of the crossbar (3) and of the stud (2) are at least internally fixed to an angular mean (20, 21).
14) Device according to claim 12 characterized in that the side portions of at least the angular mean (20, 21) are engaged by corresponding guides (22) carried out in correspondence of the inner walls of the crossbar (3) and stud (2).
15) Device according to claim 13 characterized in that the guides (22) are "L" shaped.
16) Device according to claim 1 characterized in that the first pin (5) has in correspondence of a first end a transversal through hole engaged by at least an elastic pin (23) fit to avoid the axial disengagement of said first pin (5).
17) Device according to claim 4 or claim 11 characterized in that the second pin (10) has in correspondence of a first end a transversal through hole engaged by at least an elastic pin (23) fit to avoid the axial disengagement of said second pin (10).
18) Device according to claim 11 characterized in that at least one between stud (2) and crossbar (3) is provided with a hole (24) fit for housing a bush (25) for guiding the movement of the fixing means (6).
PCT/IB2002/000823 2001-03-21 2002-03-20 Angular connection device for tubular frames, particularly frames for sporting uses WO2002074396A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02722527A EP1395343A1 (en) 2001-03-21 2002-03-20 Angular connection device for tubular frames, particularly frames for sporting uses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITB2001A000162 2001-03-21
IT2001BO000162A ITBO20010162A1 (en) 2001-03-21 2001-03-21 ANGOALRE CONNECTION DEVICE FOR TUBULAR STRUCTURES, IN PARTICULAR FOR SPORTS STRUCTURES

Publications (1)

Publication Number Publication Date
WO2002074396A1 true WO2002074396A1 (en) 2002-09-26

Family

ID=11439208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/000823 WO2002074396A1 (en) 2001-03-21 2002-03-20 Angular connection device for tubular frames, particularly frames for sporting uses

Country Status (3)

Country Link
EP (1) EP1395343A1 (en)
IT (1) ITBO20010162A1 (en)
WO (1) WO2002074396A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005051131A1 (en) * 2003-11-28 2005-06-09 Tomat S.N.C. Di Tomat Franco & C. Demountable wooden chair
DE102006011760A1 (en) * 2006-03-13 2007-08-02 König + Neurath AG Pipe connector has two inner hollow pipe elements, which have aligned connecting areas, and connecting areas of pipe elements have connecting boundaries formed together in form-fit manner
DE112004000954B4 (en) * 2003-06-04 2011-12-29 Kokuyo Co., Ltd. Component coupling device and table with this component coupling device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB448527A (en) * 1935-01-18 1936-06-10 William Arthur Joyce Improvements relating to tubular seat frames
GB927506A (en) * 1961-03-21 1963-05-29 Eric Lewin Dargue A desk unit frame
US3782724A (en) * 1972-01-24 1974-01-01 Joel Rottman Enterprises Inc Goal post padding
US5016694A (en) * 1990-03-09 1991-05-21 Wagner Richard L Clamping assembly
EP0502279A1 (en) * 1990-02-23 1992-09-09 Sport France Special profile for football or rugby goals
EP0712594A1 (en) * 1994-11-18 1996-05-22 BUIANI LINO & FIGLI Srl System for the assembly and clamping of seats which can be dismantled
DE19540238A1 (en) * 1995-10-19 1997-04-24 Albert Langenmayer Tensioning element with threaded shaft, especially to position doors
US5842939A (en) * 1997-05-27 1998-12-01 Act Labs Ltd. Portable sporting goal framework and net
DK173391B1 (en) * 1997-09-30 2000-09-18 Ikea Internat A S Coupling nut and method for making it

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB448527A (en) * 1935-01-18 1936-06-10 William Arthur Joyce Improvements relating to tubular seat frames
GB927506A (en) * 1961-03-21 1963-05-29 Eric Lewin Dargue A desk unit frame
US3782724A (en) * 1972-01-24 1974-01-01 Joel Rottman Enterprises Inc Goal post padding
EP0502279A1 (en) * 1990-02-23 1992-09-09 Sport France Special profile for football or rugby goals
US5016694A (en) * 1990-03-09 1991-05-21 Wagner Richard L Clamping assembly
EP0712594A1 (en) * 1994-11-18 1996-05-22 BUIANI LINO & FIGLI Srl System for the assembly and clamping of seats which can be dismantled
DE19540238A1 (en) * 1995-10-19 1997-04-24 Albert Langenmayer Tensioning element with threaded shaft, especially to position doors
US5842939A (en) * 1997-05-27 1998-12-01 Act Labs Ltd. Portable sporting goal framework and net
DK173391B1 (en) * 1997-09-30 2000-09-18 Ikea Internat A S Coupling nut and method for making it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112004000954B4 (en) * 2003-06-04 2011-12-29 Kokuyo Co., Ltd. Component coupling device and table with this component coupling device
WO2005051131A1 (en) * 2003-11-28 2005-06-09 Tomat S.N.C. Di Tomat Franco & C. Demountable wooden chair
DE102006011760A1 (en) * 2006-03-13 2007-08-02 König + Neurath AG Pipe connector has two inner hollow pipe elements, which have aligned connecting areas, and connecting areas of pipe elements have connecting boundaries formed together in form-fit manner

Also Published As

Publication number Publication date
EP1395343A1 (en) 2004-03-10
ITBO20010162A0 (en) 2001-03-21
ITBO20010162A1 (en) 2002-09-21

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