| GB217038A | 1924-06-12 | |||
| US5433569A | 1995-07-18 | |||
| GB2027509A | 1980-02-20 | |||
| PL37679U |
| 1. | A screw connector in a form of the threaded shank and a flat head with a hole, characterised in that, the thickness of the head (lb) is smaller than the diameter of the shank (la), while one plane (A) limiting the head (lb) at a tangent to the surface of the shank, and the second plane (B) at a shorter distance fiom the shank axis transforms into a single sided bevel (lc) in the transition zone between the shank (la) and the head (lb). |
| 2. | A screw connector according to claim 1, characterised in that, the thickness of the head (lb) is equal to half of the diameter of the shank (la). |
| 3. | A screw connector according to claim 1 or 2, characterised in that, the ratio of the slope of the bevel plane (Ic) to the plane (B) of the head (fob) is equal to 1 : 1. |
| 4. | A method of connecting elements, characterised in that, the perpendicular element (2) is joined with the base element (3) by means of the screw connector (1) together with the bolt (4) in such a way that the head of the connector (1) is in contact with the perpendicular element (2) and the shank goes through the hole of the base element (3), while the bolt (4) goes through the connector (1) head and the hole of the perpendicular element (2), after which the nuts (5) are thightened and the single sided Tjoint is obtained. |
| 5. | A method of connecting elements, characterised in that, the perpendicular element (2) is joined with the base element (3) by means of two screw connectors (1) together with the bolt (4) in such a way that the heads (lb) of the connectors (1) are in contact on both sides with the perpendicular element (2) and the shanks (la) go through the hole of the base element (3), while the bolt (4) goes through the connector (1) heads and the hole of the perpendicular element (2), after which the nuts (5) are thightened and the double sided Tjoint is obtained. |
| 6. | A method of connecting elements according to claim 5, characterised in that. in the T joint at least one distance plate (6) is placed at a tangent to the perpendicular element (2). |
| 7. | A method of connecting elements according to claim 4 or 5, characterised in that, a distance element (7) is placed at a tangent to the base element (3). |
| 8. | A method of connecting elements according to claim 6, characterised in that, a distance element (7) is placed at a tangent to the base element (3). |
| 9. | A method of connecting elements, characterised in that, the shank of the screw connector (1), having first the nut (5) placed on it, is then screwed into the threaded hole (8) of the base element (3) ; and then after thightening the nut (5) stabilising the position of the connector (1) in relation to the base element (^ as a result of which a sort of screw type joint is obtained. |
| 10. | A method of connecting elements, characterised in that, the shank of one connector (1) is placed in the hole of the head of the second connector (1), next the nuts (5) placed on the through shank on both sides of the head are tightened. stabilising the connectors (1) in the required position, as a result of which a through joint of two connectors is obtained. |
| 11. | A method of connecting elements, characterised in that, at least two connectors (1) are overlapping by heads using a central throughconnector (9), obtaining in this way a lap joint. |
| 12. | A method of connecting elements according claim 11, characterised in that, two screw connectors (1), whose thickness of the head (lb) is equal to one half of the diameter of the shank (la) are connected in such a way that the axis of the shank lie in the lap plane. AMENDED CLAIMS [received by the International Bureau on 6 Septembre 1999 (06.09.99); original claim 1 amended; new claim 2 added; remaining claims unchanged (1 page)] 1. A screw connector in a form of the threaded shank and a flat ovalshapcd hcad <BR> <BR> with a hole, eitaractcriscd in thai, the thickness of the head (lb) iscqual to or<BR> <BR> <BR> <BR> <BR> greaterthan half of the diameter of the shank (la), while one plane (#) limiting the head (1b) is tangent to Hie suriace of the shank, and the second plane (13) into a single sided bevel (lc) in the transition xonc between the shank (la) and the head (1b). |
| 13. | 2 A scicw connector according to claim 1, charactcriKcd in that, the hole anri lhc <BR> <BR> coniocer oftlte head (jb) [is equal to half of the diameter of the shank (1a)] are<BR> <BR> <BR> <BR> concentric.<BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <P>3 A screw connector according to claim 1 or 2, characterised in that, the ratio of the slope of the bevel plane (1c) to the plane (13) of thet head (1b) is equal to 1: <BR> <BR> 1.<BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> <P>4. A method of connecting elements, characterised in that, the perpendicular element (2) is joined with the base element (3) by means of the screw connector (1) together with the bolt (4) in such a way that the head of the connector (1) is in contact with the perpendicular element (2) and the shank goes through the hole of the base element (3), while the bolt (4) goes through the connector (1) head and the hole of the perpendicular element (2) afterwhich the nuts (5) are thightened and the single sided T 5. A method of connecting elements, characterised in that, the perpendicular element (2) is joined with the base element (O 1sy means of two soew <BR> <BR> connectors (1) together with the bolt (4) in such a way that the heads (1 b) of the connectors (1) are in contact: on both sides with the perpendicular element (2) <BR> <BR> and the shanks (la) go through the holc of the base element (3), while the bolt. (4) goes through the connector (1) heads and the hole of the perpendicular <BR> <BR> element (2), after which thc nuts (5) are thightcned and the double sided Tjoint is obtained. |
| 14. | 6 A method of connecting elements according to claim. 5, charactcrised in that, in <BR> <BR> the'i'joint at. least onc distancc plate (6) is placed at a tangent to the perpendicular element (2). Statement under article 19 (1) It is declared that the amendments of claims under article J arc fully supportod by the original disclosure. <BR> <BR> <BR> <BR> <P> In t. he preamblc of'thc amcnded claim 1 the shapc of a flat head is<BR> <BR> <BR> <BR> defined as being ovalshaped in accordance with the known prior art recited<BR> <BR> <BR> <BR> <BR> in the second paragraph of the specification and in a characterising part of the amended claim 1 the thickness of the head is defined more precisely by incorporating of the feature previously defined in claim 2 as file (l. The iicw claim 2 is now added. The head of the screw connector is now defined in accordance with the drawings as filed (Fig. 1a and Fig. 4). 't'ihe specification will necd to be amended as follows: a) on the first page ol thc speciflcatinn as filed new para. graph directecl to the bolt disclosed in CB 217038 A will have to be added after the<BR> <BR> <BR> <BR> <BR> present fourth paragraph;<BR> <BR> <BR> <BR> <BR> <BR> <BR> b) on page 1 the summary of the invention will need to be reworded to match the langage of the amended claim I and new claim 2; c) on page 3 of the specification more detail description of Fig. 1a will nced to be introduced ; d) in the second paragraph on page 4 the shape of the head of the screw connector according to the invention shown on Fig. 4 will need to be described in details. There is no need to amcnd the drawings as filed,. |
The present invention relates to a screw connector and a method of connecting elements, particulary of metal constructions.
A bolt with an eye head comprising of a threaded shank and a flat oval head with a hole is already known. In this solution the thickness of the head is equal to the diameter of the shank.
Beam-to-column connections, in which apart from bolts, additional connecting devices are used, made up of an angle or rolled tees, are already known. Joints of this type, as a result of substantial deformation of connecting devices, show a relatively high flexability as well as a not very great strength. According to the present invention, joints using screw connectors together with standard bolts and nuts are useful alternative solutions in these areas, while being simple and more constructable, since they do not need any additional connecting devices.
From the description of the Polish utility model No. 37679, the screw connector for connecting steel rolled sections is already known. This connector consists of a bolt and a nut with grooves on them as well as from a rolled section in which there are cuts allowing for the fitting of a nut as well as a jointed section with a hole through which a bolt is fitted through a bent back cover plate.
The aim of the present invention is the realisation of a connector for cany ing out different types of connections, particulary so-called T-joints both single and double sided, ordinary and pre-loaded.
According to the present invention, screw connectors are useful for making temporary connections, which are suitable for the proper stabilisation of elements before realisation of the final welded joints.
The nature of the invention is that the connector consist of a threaded shank with a flat head in which there is a circular hole, while the thickness of the head is smaller than the diameter of the shank. The head of the connector has one plane limiting it at a tangent to the surface of the shank, while the second plane at a shorter distance from the shank axis transforms into a single sided bevel in the transition zone between the shank and the head. Preferably, the thickness of the
head is equal to half of the diameter of the shank, while the ratio of the slope of the bevel plane to the plane of the head is equal to 1: 1.
According to the present invention, the method of connecting elements is that the perpendicular element is joined with the base element by means of the connector according to the invention as well as by means of the standard bolt in such a way that the head of the connector is in contact with the perpendicular element and the shank goes through the hole of the base element, while the bolt goes through the connector head and the hole of the perpendicular element, after which the bolt nuts are thightened and the single sided T-joint is obtained.
According to the present invention, the method of connecting elements is that the perpendicular element is joined with the base element by means of two connectors according to the invention as well as by means of the bolt, in such a way that the heads of the connectors are in contact on both sides with the perpendicular element and the shanks go through the hole of the base element while the bolt goes through the connector heads and the hole of the perpendicular element, after which the nuts are thightened and the double sided T-joint is obtained.
Preferably in the double sided T-joint, at least one distance plate is placed at a tangent to the perpendicular element.
Preferably in the single or double sided T-joint, the distance element is placed at a tangent to the base element.
According to the invention, the method of connecting elements is based on the fact that the shank of the connector, having first the nut placed on it, is then screwed into the threaded hole of the base element; then the nut is thightened, stabilising the position of the connector in relation to the base element, as a result of which a sort of screw type joint is obtained.
The method of connecting elements is based on the fact that the shank of one connector is placed in the hole of the head of the second connector, next the nuts placed on the through shank on both sides of the head are tightened, stabilising the connectors in the required position and a through joint of two connectors is thus obtained.
The method of connecting elements is based on the fact that at least two connectors are overlapping by heads using a central through-connector, obtaining in this way a lap joint.
In the preferable case, the method of connecting elements relates to the fact that two connectors, whose thickness of the head is equal to one half of the diameter
of the shank are connected in such a way that the axis of the shank lie in the contact plane.
The present invention is explained in examples of realisation in the attached drawings, in which Fig. la-shows the connector in perspective view, Fig. lb- shows the connector in a longitudinal section, Fig. lc-shows the connector in a section along the A-A line of Fig. lb, Fig. 2-shows the method of connecting the elements, to obtain a single sided T-joint, Fig. 3.- shows the method of connecting the elements, to obtain a double sided T-joint, and Fig. 4-shows the different applications of the screw connectors in various combinations.
The present invention relates to the screw connector manufactured using the method of plastic forming, in the form of a threaded shank la and a flat head Ib with a circular hole.
The thickness of the connector head lb is smaller than the diameter of its shank la, while one plane A limiting the head lb at a tangent to the surface of the shank, and the second plane B at a shorter distance from the shank axis transforms into a single side bevel I c in the transition zone between the shank I a and the head lb. The thickness of the head lb, in the preferable use of the invention, is equal to half of the diameter of the shank la, while the ratio of the slope of the bevel plane I c to the plane B of the head lb is equal to 1: 1.
Fig. 2-4 show the different methods of connecting elements using the con- nector 1, according to the present invention.
Fig. 2 illustrates the method of connecting elements, in which the perpen- dicular element 2 is joined with the base element 3 by means of the screw connector <BR> <BR> 1 as well as by means of the standard bolt 4 in such a way that the head lb of the<BR> <BR> <BR> <BR> <BR> <BR> connector 1 is in contact with the perpendicular element 2 and its shank la goes through the hole of the base element 3, while the bolt 4 goes through the hole of the <BR> <BR> connector 1 head and the hole of the perpendicular element 2, after which the nuts 5 are thightened and the single sided T-joint is obtained. In this joint, at least one <BR> <BR> distance plate 6 is placed at a tangent to the perpendicular element 2 and/or a distance element 7 at a tangent to the base element 3. Instead of the distance plate and distance element, one element can be used for instance in the form of an angle.
Fig. 3 illustrates the method of conneting elements, in which the perpendicular <BR> <BR> element 2 is joined with the base element 3 by means of two screw connectors 1 as well as by means of the bolt 4 in such a way that the heads lb of the connectors I are in contact on both sides with the perpendicular element 2 and the shanks la go through the hole of the base element 3, while the bolt 4 goes through the connector
heads 1 and the hole of the perpendicular element 2, after which the nuts 5 are thightened and the double sided T-joint is obtained. Preferably, in this joint, at least one distance plate 6 is placed at a tangent to the perpendicular element 2 and/or a distance element 7 at a tangent to the base element 3. Instead of the distance plate and distance element can be used one element, for instance in the form of an angle.
Fig. 4 illustrates a number of examples relating to the methods of connecting elements. The shank of the screw connector 1, after first having the nut 5 placed on it, is screwed into the threaded hole 8 of the base element o; and then after <BR> <BR> <BR> thightening the nut X the position of the connector 1 in relation to the base element 3 is stabilised, as a result of which a sort of screw type joint is obtained. The shank <BR> <BR> <BR> of one screw connector 1 is placed in the hole of the head of the second connector 1, next both nuts 5 placed on the through shank on both sides of the head are tightened, stabilising the connectors 1 in the required position, as a result of which a through joint of two connectors is obtained. Two screw connectors 1 are overlapping by heads using a central trough-connector 9, obtaining in this way a lap joint. In the preferable use of the invention, two screw connectors 1, whose thickness of the head lb is equal to one half of the diameter of the shank la are connected in such a way that the axis of the shank lie in the contact plane.
The screw connector, according to the present invention, is to be used for connecting mutually othogonal elements without additional connecting devices. such as angles and tees, especially for realisation of the T-joints between beam sections.
The screw connectors, according to the present invention, with overlaping heads may be used for the realisation of pin connections or other joints on one central-through connector.
The screw connectors according to the present invention may also be used for constructing racks and other assemblies with a large multiple versatility and a con- tinuous regulation.