EP2202373A1 - Hinge, especially for the object area - Google Patents

Abstract

The hinge has two strap sections (1,2), which are movably connected together in a strip roll (3) in pivoting manner. A strap roller section (3b) of the former strap section is arranged between two strap roller sections (3a,3c) of the latter strap section. The strap roller sections are spaced to each other. A bolt (7) is inserted in both strap roller sections of the latter strap section. An independent claim is also included for a method for manufacturing the hinge.

Description

The invention relates to a door hinge having a first hinge part and a second hinge part, which are pivotally connected to each other on a tape roll, wherein a tape roll portion of the first hinge part between two spaced apart belt roll sections of the second hinge part is arranged and wherein bearing inserts are provided, which in the tape roll portion of first band part are used and have a contact surface for supporting the second band part. According to the present invention, the door hinge is particularly for the object area, i. H. intended especially for the interior design of office and business premises.

A door hinge with the features described above is from the document US 4,359,804 known. In the generic door hinge the band parts are supported directly against each other via the bearing inserts and rotatably connected to a continuous pivot pin. In order to hold the pivot pin in position and secure against falling, caps are provided, which are each placed on an associated tape reel section of the second hinge part and thus extend in the axial direction beyond the tape roll addition.

From the pamphlets DE 102 59 678 A1 . DE 103 61 548 A1 and DE 103 16 891 B3 Door hinges are known in which no continuous pivot pin but the arrangement is provided by two bolts. In contrast to the generic embodiment, however, the support of the band parts takes place in the longitudinal direction over the bolts as load-bearing elements. A direct support of the band parts on the contact surface of a bearing insert is not provided accordingly. Since the support of the band parts takes place via the bolts, they must be precisely and non-positively fixed to the associated belt reel sections, including, for example, radially acting clamping screws or inserted into the tape roll sections threaded screws can be provided. The construction of the door hinges is relatively expensive. In addition, the assembly and adjustment of the door hinges is difficult.

The invention has for its object to provide a door hinge with the features described above, which is composed of few parts and still has good functional properties.

Starting from a door hinge with the features of the preamble of claim 1, the object is achieved in that in each case a bolt is inserted into both tape roll sections of the second hinge part, which substantially fills the inner diameter of the associated tape roll section with a first longitudinal section and with a second, engages a receiving portion of the associated longitudinal insert and that the bolts are completely inserted into the tape roll, wherein an end surface on the first longitudinal portion of the bolt is approximately flush with an end face of the respectively associated tape roll portion or in Regarding the end face in the tape reel section jumps back.

According to the invention, the band parts rest against one another via at least one of the two bearing inserts, the axial forces being absorbed. The two bolts are intended to connect the band parts rotatably and to store radially. The bolts are suitably designed and arranged so that the door hinge is as free of play and torsionally stiff, including both in the tape reel sections of the second hinge part as well as in the Aufnahmelöchem the bearing inserts a clamping seat is beneficial. In contrast, the bolts because of the direct support of the band parts on the Bearing inserts usually exposed to no axial forces. Since the support takes place in the longitudinal direction through the bearing inserts and the bolts only for the radial bearing, ie the rotatable connection, are required, a precise non-positive fixation, for example by radially acting clamping screws, for the function of the door hinge is not required. Accordingly, the tape roll sections can also be made free of radial holes that affect the appearance of the door hinge. According to the invention, neither the arrangement of additional setting or fixing means nor the arrangement of caps are required on the roll of tape, so that a particularly simple and thus cost-effective construction of the door hinge results.

According to another aspect of the present invention, the bolts are fully inserted into the tape roll. The bolts can therefore not be detected and pulled out with a tool such as pliers. The door hinge is thus protected against manipulation, for example against burglary attempts. In contrast to the known from the prior art design with end caps resulting due to the complete integration of the bolt and a particularly high-quality appearance. Upon closer inspection of the door hinge, the impression of a continuous, dimensionally stable pivot pin is awakened.

According to the present invention, the first longitudinal portion of the bolt is intended to substantially fill the inner diameter of the associated tape roll portion. This feature relates to a play-free or at least largely play-free arrangement of the bolts in the tape roll sections of the second hinge part. However, an exactly circular cylindrical configuration of the first longitudinal section is not required. In particular, the first longitudinal section in the circumferential direction overall or over a partial area can also have a polygonal shape, as a result of which the frictional connection between the bolt and the associated tape roll sections can be improved. Additionally or alternatively, knurls may be provided on the first longitudinal sections of the bolts to increase the frictional engagement. By a suitable radial excess of the first longitudinal section but also without the formation of a knurling, for example, even with a precisely cylindrical configuration of the first longitudinal section, a press fit and thus a secure fixation of the bolts can be achieved.

In order to further improve the fixation of the bolts in the belt roll sections, it may additionally or alternatively be provided that at least the lower bolt in the assembled state has a radial thickening at its first longitudinal section. However, since the exact installation position is often not fixed from the outset, preferably both bolts are provided with a corresponding thickening. The thickening on the at least one bolt is preferably formed from the material of the bolt itself, wherein the band roller portion of the second band part associated with this pin has a groove in which the thickening is held. Even with severe warming and deformation of the second hinge part, for example in the case of a fire, a secure hold can be ensured by the formation of a thickening of the first longitudinal portion of the bolt and a groove on the associated roll of tape. The invention is based on the finding that the formation of a thickening, which is basically known in continuous bolts with a purely cylindrical shape, also for the presently claimed embodiment with two separate bolts, each having a first and a second longitudinal section with different diameters , is of particular advantage.

The bolts, which each have two longitudinal sections with different diameters and optionally also a knurling or polygonal shape, can be manufactured particularly easily and inexpensively as extruded parts become. This results in the advantage that the bolts can each be formed from a blank in a single forming step. Another advantage is that, for example, incurred in comparison to an embodiment of the bolt as turned parts in the production of only small amounts of waste. The optionally provided thickening can be formed particularly easily by upsetting the bolt.

The band parts are preferably made of sheet metal, wherein the band roll sections are formed by bending and are usually not completely closed. When pressing the preferably slightly oversized bolts, the tape roll sections of the second hinge part can then be elastically expanded, whereby on the one hand the pressing can be done with a moderate effort and on the other hand, a secure press fit and good protection against tampering can be achieved. Finally, due to the elasticity of the tape roll sections, production-related inaccuracies and tolerances can also be compensated to a certain extent. In order to achieve sufficient stability of the door hinge, the thickness of the sheet is preferably between 2 mm and 4 mm, wherein at least the visible areas of the hinge parts can be polished, brushed, coated or provided with a different surface finish to achieve a high-quality visual appearance. The band parts and the bolts are preferably made of stainless steel.

In order to enable a low-wear and low-friction bearing, the bearing inserts may be formed of a resistant material, which has a low coefficient of friction in connection with the material of the band parts. Particularly advantageous is an embodiment according to which the bearing inserts for supporting the band parts against each other each have a sliding ring.

In addition to a sliding bearing, which allows a particularly compact construction of the bearing inserts, a rolling bearing is possible, in which case the bearing inserts comprise mutually rotatable and supported by rolling bearing body parts.

The bearing inserts each have a receiving hole for the second longitudinal sections of the bolts. The receiving hole may be formed without restriction as a through hole or blind hole. It should be noted that the second longitudinal sections of the bolts should have the largest possible diameter in order to ensure a high stability of the door hinge and in particular to avoid a tilting of the hinge parts against each other. In order to make this possible, the areas of the bearing inserts surrounding the second longitudinal section of the bolts are made as thin-walled as possible. Thus, according to a preferred embodiment of the invention, it is provided that the diameter at the second longitudinal section of the bolts is between 70% and 90% of the diameter at the first longitudinal section.

Especially when using the door hinges in the object area a most inconspicuous and appealing appearance with a narrow tape roll is sought. The outer diameter of the tape roll sections is preferably between 12 mm and 22 mm, more preferably between 15 mm and 19 mm. For optical reasons, it is usually required that the tape roll portion of the first tape portion and the tape roll portions of the second tape portion have the same outer diameter.

In order to enable the attachment of the door hinge according to the invention to a door leaf and a door frame, according to a preferred embodiment, the first hinge part has a hinge flap for attachment to a frame-side tape receiving element and the second hinge part with a hinge flap Openings for attachment to a door wing. In particular, the door hinge according to the invention can be combined with tape receiving elements that allow a multi-dimensional adjustment and thus a positioning of the door leaf relative to the door frame. Due to the direct support of the two band parts against each other on the bearing inserts usually no vertical adjustment of the band parts is provided on the tape roll. However, the attachment of the door hinge to a frame-side tape receiving element can be carried out such that there vertical adjustment and thus positioning in the vertical direction is possible.

The invention also relates to a method for producing a door hinge, wherein from sheet metal a first hinge part with a tape reel section and a second hinge part with two spaced apart tape reel sections are formed, being formed by extrusion bolts whose diameter at a first longitudinal portion about the inner diameter of Belt reel sections of the second hinge part corresponds and which have a second longitudinal section with a smaller diameter, wherein on the tape reel section of the first hinge part end bearing inserts are arranged, which have a contact surface for supporting the second hinge part, wherein subsequently the tape reel section of the first hinge part with the bearing inserts arranged thereon be positioned between the tape roll sections of the second hinge part and wherein finally for the rotatable connection of the hinge parts together the bolts in such a way in the tape roll sections of the second B be used part that the second longitudinal sections engage in receiving holes of the bearing inserts.

Preferably, the bolts are provided at their first longitudinal portion with a slight excess in relation to the inner diameter of the tape roll portions of the second hinge part, in which case the bolts to the rotatable Connection of the band parts are pressed together with elastic widening of the tape roll portions of the second hinge part.

As previously explained, the bolts or at least one of the bolts may have a thickening. In order to provide the bolt at its first longitudinal portion with a thickening, for example, a compression in the longitudinal direction may be provided, so that the thickening has the shape of a circumferential bead. By such a process control, the thickening can be particularly easily and inexpensively formed from the material of the bolt itself. Conveniently, an inside groove is provided in the tape roll portion which is associated with the pin, which allows a positive locking of the thickening. Such grooves, which are usually provided on both reel sections of the second hinge part, are preferably introduced into the sheet before the two reel sections are formed from the sheet.

Fig. 1a

eine Ansicht eines erfindungsgemäßen Türbandes,

Fig. 1b

eine Draufsicht entlang der Linie A-A der Fig. 1a,

Fig. 2

eine Detailansicht eines Bolzens zur Verbindung der Bandteile des Türbandes,

Fig. 3

eine alternative Ausgestaltung des Türbandes in einer Ansicht gemäß der Fig. 1a,

The invention will be explained in the following with reference to a drawing showing only one exemplary embodiment. Show it:

Fig. 1a

a view of a door hinge according to the invention,

Fig. 1b

a plan view along the line AA of Fig. 1a .

Fig. 2

a detailed view of a bolt for connecting the band parts of the door hinge,

Fig. 3

an alternative embodiment of the door hinge in a view according to the Fig. 1a .

The Fig. 1a and 1b show a door hinge for the object area with a first hinge part 1 and a second hinge part 2, which are made of sheet metal and connected to a tape roll 3 with each other. A tape roll portion 3b of the first tape part 1 is disposed between two spaced-apart tape roll portions 3a, 3c of the second tape piece 2.

The sectional view of Fig. 1b It can be seen that the tape roll portions 3a, 3b, 3c are bent from sheet metal, wherein the tape roll portions 3a, 3b, 3c are not completely closed and thus have a certain elasticity.

In the tape reel section 3b of the first hinge part 1, two bearing inserts 4 are used at the end, each having a slide ring 5. The sliding ring 5 forms a contact surface 6, at which the adjacent tape reel section 3a, 3c of the second hinge part 2 is adjacent and supported. The support of the band parts 1, 2 against each other is thus directly on the bearing inserts. 4

In order to connect the two band parts 1, 2 rotatable with each other and to guide radially, two bolts 7 are provided. In the Fig. 2 Bolts 7 shown in detail are inserted completely into the roll of tape 3 and each comprise a first longitudinal section 8 and a second longitudinal section 9 having a smaller diameter. The bolts 7 are each free of play with their first longitudinal section 8 in the associated tape roll section 3a, 3c of the second Band Part 2 held. In order to improve the clamping fit, a knurling 10 is provided on the first longitudinal section 8. Alternatively, the first longitudinal section 8 may have a polygonal shape in sections or over its entire length. The second longitudinal sections 9 of the bolts 7 are each inserted in a receiving hole 11 of the associated bearing insert 4 and there by a sleeve-shaped Section of the bearing inserts 4 radially supported. An axial support of the bolt 7 on the bearing inserts 4 is not provided, so that the transition from the first longitudinal section 8 to the second longitudinal section 9 of the bolt 7 is arranged at a distance from the bearing inserts 4.

The bolts 7 are fully inserted into the roll of tape 3 so that they can not be gripped and pulled out with a tool such as pliers. The door hinge is therefore characterized by a high security against manipulation and a high-quality appearance. In particular, the two bolts 7 give the impression of a solid, solid pivot pin. In the arrangement shown in the embodiment end surfaces 12 of the bolt 7 are flush with end faces 13 of the associated tape reel sections 3a, 3c. Alternatively, however, it can also be provided that the bolts 7 are pressed further into the belt roller sections 3a, 3c so that the end surfaces 12 spring back into the belt roller sections 3a, 3c with respect to the end surfaces 13.

So that an overall high strength can be achieved, the area of the bearing inserts 4 surrounding the second longitudinal section 9 of the bearing pin 7 is thin-walled, for example with a thickness of between 0.5 mm and 2 mm. For this reason, only a slight cross-sectional reduction from the first longitudinal section 8 to the second longitudinal section 9 is required.

In order to attach the door hinge to a door, the second hinge part 2 has a hinge flap 14a with openings for receiving screws. For the frame-side attachment, a band tab 14b is provided on the first band part 1, which can be fixed in a band receiving element.

In the context of the invention, the bolt 7 is formed with its first longitudinal section 8, its second longitudinal section 9 and the knurling 10 in a single process step by extrusion. Both the band parts 1, 2 and the pin 7 are preferably made of stainless steel.

In a modification of the embodiment according to the Fig. 1a show the Fig. 3 an embodiment in which the two bolts 7 are not fixed by a knurling 10 but each by a thickening 15. The thickenings 15 engage in a groove 16 of the respective associated tape reel section 3 a, 3 c, so that there is a positive fixing in the longitudinal direction. The thickening 15 can be formed in a particularly simple manner from the material of the respective bolt 7 by upsetting in the longitudinal direction. This results in the advantage that even with a strong heating of the door hinge, for example in a fire, the bolt 7 are secured against falling out. Since, in the production of the described thickening 15 production-related possibly a slight play may occur, in addition, a knurling 10 may be provided. Under normal loads, the bolts 7 are held in the framework of such a configuration by the knurling 10, while under heavy loads, for example in a fire, the thickening 15 secures the bolts against a complete falling out.

Claims (14)

Door hinge, in particular for the object sector, with a first hinge part (1) and a second hinge part (2), which are pivotally connected to each other on a roll of tape (3), wherein a tape roll section (3b) of the first hinge part (1) between two spaced apart Tape reel sections (3a, 3c) of the second hinge part (2) is arranged and wherein bearing inserts (4) are provided, which are inserted into the reel section (3b) of the first hinge part (1) and a contact surface (6) for axially supporting the second hinge part (2), characterized in that in both tape reel sections (3a, 3c) of the second tape part (2) in each case a bolt (7) is inserted, with a first longitudinal section (8) the inner diameter of the associated tape reel section (3a, 3c) essentially fills and with a second, having a small diameter longitudinal portion (9) for rotatably connecting the band parts (1, 2) with each other in a receiving hole (11) egg engaged bearing insert (4) engages and that the bolts (7) are completely inserted into the tape roll (3), wherein an end face (12) on the first longitudinal portion (8) of the bolt (7) is approximately flush with an end face (13) of the respective associated tape reel section (3a, 3c) or in relation to the end face (13) in the tape reel section (3a, 3c) into it. Door hinge according to claim 1, characterized in that a knurling (10) is provided on the first longitudinal section (8) of the bolt (7). Door hinge according to claim 1 or 2, characterized in that the bolts (7) are designed as extrusions. Door hinge according to one of claims 1 to 3, characterized in that the band parts (1, 2) are made of sheet metal. Door hinge according to claim 4, characterized in that the sheet has a thickness between 2 mm and 4 mm. Door hinge according to one of claims 1 to 5, characterized in that the diameter at the second longitudinal section (9) is between 70% and 90% of the diameter at the first longitudinal section (8). Door hinge according to one of claims 1 to 6, characterized in that the tape roll sections (3a, 3b, 3c) have an outer diameter between 12 mm and 22 mm, preferably between 15 mm and 19 mm. Door hinge according to one of claims 1 to 7, characterized in that the first hinge part (1) has a hinge flap (14b) for attachment to a frame-side tape receiving element and the second hinge part (2) has a hinge flap (14a) with openings for attachment to a door leaf , Door hinge according to one of claims 1 to 8, characterized in that at least one of the bolts (7) at a first longitudinal portion (8) has a thickening (15) which is formed from the material of the bolt (7), preferably by upsetting, wherein the band roller portion (3a, 3c) of the second band part (2) assigned to this at least one pin (7) has an internal groove (16) in which the thickening (15) is held. Method for producing a door hinge, in particular according to one of claims 1 to 9,
wherein a first strip part (1) with a strip roll section (3b) and a second strip part (2) with two spaced-apart strip roll sections (3a, 3c) are formed from sheet metal,
wherein pins (7) are formed by extrusion, whose diameters at a first longitudinal section (8) approximately correspond to the inner diameter of the belt roller sections (3a, 3c) of the second hinge section (2) and which have a second longitudinal section (9) with a smaller diameter,
wherein bearing inserts (4) are arranged on the belt reel section (3b) of the first belt part (1) at the end, which bearing surfaces (6) have a bearing surface (6) for supporting the second belt part (2),
wherein subsequently the tape roll portion (3b) of the first tape portion (1) with the bearing inserts (4) disposed thereon is positioned between the tape roll portions (3a, 3c) of the second tape portion (2) and
wherein, for the rotatable connection of the band parts (1, 2), the bolts (7) are inserted into the band roller sections (3a, 3c) of the second band part (2) such that the second longitudinal sections (9) are inserted into receiving holes (11) of the bearing inserts (11). 4) intervene. A method according to claim 10, wherein the bolts (7) are provided at their first longitudinal section (8) with a slight oversize with respect to the inner diameter of the belt roller sections (3a, 3c) of the second belt section (2), the bolts (7) facing towards rotatable connection of the band parts (1, 2) with each other with elastic widening of the band roller portions (3a, 3c) of the second band part (2) are pressed. Method according to claim 10 or 11, wherein at least one of the bolts (7) is provided with a thickening (15) at its first longitudinal section (8). A method according to claim 12, wherein the thickening (15) is formed by upsetting the bolt (7) in the longitudinal direction, so that the thickening (15) has the shape of a circumferential bead. A method according to claim 12 or 13, wherein the sheet of the second band member (2) is provided with two grooves (16) disposed inside thereof after forming the band roller portions (3a, 3c).

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