ES2302499T3 - ADJUSTABLE HINGE WITH PIVOT CENTER SUPPORT. - Google Patents

Abstract

The adjustable joint band comprises a pane band part (2) on which is a band spigot (3), and a frame band section (1) fixed on a frame. A spigot bearing (6) is axially open and cylindrical and receives the lower section of the band spigot. A bearing sleeve (5) is closed in the axial direction under a closing wall (7).

Description

Adjustable hinge with centering support pivot.

The present invention relates to a hinge adjustable for doors or windows, with a wing part of the hinge that must be fixed on the wing, on which a hinge pivot protruding down, and a frame part of the hinge that must be fixed in the frame, which has a support cylindrical pivot, axially open, for housing the lower section of the hinge pivot, as well as a section threaded underneath, essentially aligned with the support of pivot, in which a screw cap is screwed for adjustment in height of the wing part of the hinge, resting the end bottom hinge pivot on the screw cap by domed support surfaces, in contact with each other, and the hinge pivot being guided in a housed support bushing in the pivot support.

Hinges of this type are known, for example, thanks to the applicant's patent application under publication number DE 198 10 081 A1. In the hinge described in this publication, a thin-walled metal support bushing, preferably sintered metal, with self-lubricating properties, is inserted into the cylindrical pivot support of the hinge frame part. The lower pivot end is provided with a concavely domed front surface, which essentially has the shape of a conical surface. In the screw caps a hardened metal ball is pressed under pressure. The free surface of the metal ball of the screw cap, on the one hand, as well as the concave conical surface in the front hinge pivot area, on the other, form the support surfaces that are in contact with each other along of an annular contact zone. The advantage of such a hinge is that the support surfaces that rest against each other, through an annular contact area, exert a centering force on the lower hinge pivot. The force of gravity presses the hinge pivot to its lowest position in which, by conical formation of its bearing surface, the hinge pivot is subject centered with respect to the spherical bearing surface of the threaded plug. The hinge pivot can therefore be moved freely only at its upper end in the frame of the support bushing. The inclined position that is formed in the pivot support because of the hinge pivot play in the pivot support is split in half in front of a hinge pivot with free pivot end. Furthermore, by the support of the lower pivot end on the threaded plug, another advantage is compared with hinges whose axial support force is transmitted, through the radially extending surface, to the contact area of the two parts of hinge. In this contact zone, wear appears which leads, after a short time, to a dirtying of the hinge. In the case of a support through the lower pivot end the wear appears on the bottom pivot support, so that it cannot generate visible fouling from
outside.

The support bushing on the pivot support it allows a pivot guide with little friction and a reduction of the pivot support play.

The known door hinge is very complex As for the manufacturing. The support sphere must be introduced in a separate manufacturing step in the screw cap. The montage It is also very complex, due to the large number of pieces, and possible trouble free only for relatively pivot diameters big.

The present invention poses the problem of perfecting a hinge of the type described earlier than, with the maintenance of an inclined position of the small pivot, low manufacturing costs and a possible simplified hinge assembly.

This problem is solved according to the invention. thanks to the support bushing being closed, in the direction axial, by a lower closing wall whose side, oriented towards the hinge pivot forms a domed support surface of complementary form with respect to the vaulting of the end of lower pivot

In other words, the support bushing It is closed at the bottom end with a closing wall, which it has a domed surface at least on the oriented side into the support bushing, which interacts with the support surface at the bottom pivot end. By means of the Integration of the support surface in the support bushing no it is necessary to press any component (ball) separated into the screw cap. The support bushing is inserted by rule general pressure on the pivot support, so that it is fixed radially In addition, it is generally subject to resistance to torsion, so that no rotation of the hinge pivot, through the support bushing, to the plug threaded located below. In this way, the danger that by turning the hinge pivot the screw cap is screwed into the threaded section of the frame part of the hinge.

Doming can be discretionary both at the pivot end and also at the closing wall. The only thing that is decisive is that the vaults are complementary to each other, so that the support surfaces are insert into each other and fix the pivot end with respect to the support bushing At the same time the support surfaces they should preferably be formed in such a way that it is formed an annular contact zone. This is the case, for example, when the lower pivot end has a bearing surface in conical surface shape, which is placed in a lid on a spherical upper bearing surface of the bushing support for.

Especially when the closing wall is made of elastically deformable material, especially plastic, its support surface can be introduced without play in the Complementary support surface of the lower pivot end. The closing wall may have a convex support surface, for example a support surface in the form of a spherical cover. He lower pivot end, which is made of metal, must then endow with a spherical recess. This can be introduced into this metallic component or by injection molding procedure or by formed in stamp.

The side of the closing wall facing the screw cap can also have a support surface vaulted in a complementary manner with respect to the vaulting of a support surface of the screw cap. This may be formed, regardless of the vaulting of the support surface upper, concave or convex and center the support bushing with with respect to the screw cap. This second support surface is also preferably formed in the form of a spherical cap e interacts with a concave support surface of the screw cap. This second pair of bearing surfaces has, however, only a subordinate importance since the closing wall it is already fastened centered due to the seat without matching the cap of support in the pivot support.

By integrating the surfaces of support in the support bushing reduces the number of components of the hinge. No need to fix a ball at the pivot end bottom or screw cap. In particular, in case of use of a plastic bushing, the support surfaces in Spherical cap shape can be formed, by molding by transfer, during the manufacture of the cap. Also during the manufacture of the screw cap and the hinge pivot shaped spike, the manufacture of recesses for the formation of concave support surfaces do not require steps of complex processing. The hinge according to the invention can be, therefore, assemble easily and manufacture so economical

Also, in case of using a bushing metal support can be carried out the introduction of a spherical body in the lower closing wall. A spherical body made of hardened metal can be introduced by a sintering process during the manufacture of the bushing metal support Alternatively, a recess in the closing wall, so that a annular opening, which can be displaced on a body spherical with a housing groove that extends along from Ecuador.

The pivot support preferably has a axially extending groove, in which it engages a shoulder radial of the support bushing. This radial highlight protects the Support bushing against excessive pivot support. Thanks to this, a transmission of a turning movement is avoided from the bottom pivot end to the screw cap, since between the lower pivot end and the screw cap is located the closing wall fixed in the direction of rotation.

As already mentioned, the support bushing It can be made of plastic. Support surfaces domed can be formed during transfer molding of this cap. Alternatively, it can be coated by extrusion here also a support body - preferably performed in a harder material- with the plastic cap support for.

The attached drawings show a way of embodiment of the hinge according to the invention. In the drawings:

Fig. 1 shows a representation in the form of diagram of the hinge parts of a hinge,

Fig. 2 shows a rear view of the hinge sectioned in the plane of the longitudinal axis of the pivot hinge,

Fig. 3 shows an enlarged representation of the pivot end and the threaded plug in representation sectioned,

Fig. 4 shows a sectioned representation of the support bushing, and

Fig. 5 shows a bottom view of the support bushing of Fig. 4.

The hinge, which can be recognized in particular in Figs. 1 and 2, comprises a frame part of hinge 1 and a wing part of the hinge 2, which are connected of articulated manner with a hinge pin 3. The hinge pivot 3 is fastened with torsion resistance in a pivot housing 4 of the wing part of the hinge 2. Its lower half protrudes into a support bushing 5, the which is inserted in pivot support 6 of the frame part of the hinge 1.

As can be recognized in particular in Figs. 4 and 5, the lower end of the support bushing 5 is closed by a closing wall 7, which presents in both sides in each case a hemispherical support body, which forms in each case a support surface 8, 9. On the surface of upper support 8 supports a concave support surface 10, in spherical shell shape, hinge pivot 3. The surface of support 9 bottom of support bushing 5 rests on a surface of concave support 11 of a screw cap 12, which is formed by a central depression, of the patella type, of the screw cap 12. Through the supporting surfaces 8, 9 that interact with each other, the lower pivot end is fixed radially with respect to the support bushing 5 and with respect to the screw cap. A turn of hinge pivot 3 inside support bushing 5 is possible only in the upper area of the bushing, since the end of lower pivot is fixed. In this way, the angle of the maximum inclined hinge pivot position 3.

As can be recognized in Fig. 5, the support bushing 5 has a radial projection 13, which extends along the longitudinal direction of the bushing and that penetrates a groove correspondingly formed of the support of pivot 6 of the hinge frame part 1. In this way, it secures the support bushing 5 against excessive rotation in the support of pivot.

In particular in Figs. 4 and 5 can be recognize, in two diametrically opposite positions, in the area of the edge of the closing wall 7, that is outside the surfaces of support 8, 9 of the closing wall 7, openings 14 which enable an air or liquid outlet that is inside the support bushing Without these openings 14 would remain, during the introduction of the hinge pivot 3 in the support bushing 5, air or rainwater in the space between the pivot of hinge 3 and support bushing 5 which, on the one hand, is a complete introduction of hinge pivot 3 would be difficult in the support bushing 5 and, on the other, there would be a danger of corrosion due to water inclusions.

List of reference signs

one

hinge frame part

2

hinge wing part

3

hinge pivot

4

pivot housing

5

support bushing

6

pivot support

7

closing wall

8

support surface

9

support surface

10

concave pivot bearing surface of hinge

eleven

concave cap support surface screwed

12

screw cap

13

radial highlight

14

opening

Claims (11)

1. Adjustable hinge for doors or windows, with a hinge wing part (2) that must be fixed on the wing, on which a hinge pivot (3) is projected downward, and a frame part of the hinge (1) to be fixed in the frame, which has a cylindrical pivot support (6) axially open, for housing the lower section of the hinge pivot (3), as well as a threaded section located below, essentially aligned with the pivot support (6), in which a screw cap (12) is screwed for height adjustment of the hinge wing part (2), the lower hinge pivot end (3) resting on the threaded plug (12) by means of vaulted support surfaces, in contact with each other, and the hinge pivot (3) being guided in a support bushing (5) housed in the pivot support (6), characterized in that the bushing of support (5) is closed, in axial direction, by a lower closing wall (7), whose side facing the hinge pivot (3) forms a vaulted support surface (8) complementary to the vaulting of the lower pivot end. 2. Hinge according to claim 1, characterized in that the side, oriented towards the screw cap (12), of the closing wall (7) forms a vaulted support surface (9) complementary to the vaulting of a support piece (11) of the screw cap (12). 3. Hinge according to claim 2, characterized in that both support surfaces (8, 9) of the closing wall (7) are domed in the form of a spherical cover and the support surfaces (10 and 11) are concavely domed in each case at the bottom pivot end and on the screw cap (12). 4. Hinge according to one of the preceding claims, characterized in that the pivot support (6) has an axially extending groove, in which it engages an axial shoulder (13) in the support bushing (5). 5. Hinge according to one of the preceding claims, characterized in that the support bushing (5) is made of plastic. 6. Hinge according to claim 5, characterized in that a metal ball is inserted into the closing wall of the support bushing. 7. Hinge according to claim 6, characterized in that the metal ball is cast in block with the plastic material of the support bushing. 8. Hinge according to one of claims 1 to 4, characterized in that the support bushing is made of metal with self-lubricating properties. 9. Hinge according to claim 8, characterized in that a hardened metal ball is inserted into the closure wall. 10. Hinge according to claim 5, characterized in that the support bushing (5) is made in one piece with the closing wall (7) by injection molding process. 11. Hinge according to one of the preceding claims, characterized in that the closing wall (7) of the support bushing (5) has at least one opening (14).