EP0942136B1 - Height adjustable hinge pin support - Google Patents

Description

The invention relates to an adjustable hinge for doors or windows according to the preamble of claim 1 or claim 2.

Such adjustable hinges are known for example from the Applicant's EP 0 460 620 B1. With the hinge described here is in the axially open, cylindrical bearing of the frame hinge part Inserted plastic sleeve, in which the lower hinge pin section rotatable is held. The threaded plug is in one with the pin bearing Aligned internal thread section can be screwed in and lifts for height adjustment of the hinge on the plastic sleeve. With that at Lifting this plastic sleeve no visible gap between the top Sliding flange of the plastic sleeve and the upper end face of the bearing in the frame hinge part, spacers can be closed of this gap. The load of the wing hinge part weight is held over its contact surfaces on the sliding flange the plastic sleeve.

Such hinges, in particular for attaching front doors Front door frames are used in addition to the height adjustment over the threaded plug via an adjustment device in the wing hinge part, which enables transverse adjustment in the sash level. Furthermore can a contact pressure adjustment, i.e. an adjustment of the distance of the Sash level to the frame level with the sash closed.

The hinge according to the prior art mentioned can alternatively with a single, lower journal bearing or with a lower and an upper journal bearing. For most applications has the use of a simple hinge with an underlying Pin bearing enforced.

The known door hinges usually have a permanent smoothness on. In contrast, it is due to the in the relatively soft plastic sleeve held rotatable hinge portion difficult, a vertical Alignment of the hinge pin in the storage of the frame hinge part guarantee. The fairly soft plastic material tends due to the one-sided load due to the weight of the attached to the wing hinge part Wing and due to the repeated rotary movement of the hinge pin in the plastic sleeve to deform, causing an oblique position the hinge pin axis to the axis of the sleeve. Furthermore result from the axial support of the lower surface of the Wing band on the sliding surface of the plastic sleeve abrasion, which a Contamination of the ligament in the vicinity of the mutually movable Cause contact surfaces.

A height-adjustable joint band is known from EP 0 065 215 A1, in which the hinge pin of the wing hinge part over a loosely inserted Ball on a threaded plug that can be screwed into the frame hinge part supported. The support surface of the hinge pin opposite the ball is just formed so that the pin end relative to the ball in radial Direction is freely movable. From the German utility model 1 815 348 is a height-adjustable hinge known in which the each other opposite end faces of the hinge pin and the threaded plug are bowl-shaped and a ball between the two elements is joined. Both the pin and the threaded plug grip one quite large cap section of the ball. To clamp the ball in the to prevent cupped shots and the smooth running of these To ensure ball bearings, there must be considerable play in radial Direction between the bowl-shaped receiving surface and the ball be provided.

The object of the present invention is the permanent and accurate To improve the retention of the hinge pin in the frame hinge part.

According to the invention, this object is achieved through the entirety of the features of claims 1 and 2 solved.

In other words, and as generally claimed in claim 2, there is the invention essentially from the fact that the hinge pin and Threaded plugs in the axial direction directly via interacting Support the support surfaces against each other, one of the two Support surfaces a convex, rotationally symmetrical to the longitudinal axis of the hinge pin Has shape and wherein the second support surface is a concave Has shape and with an annular contact area against the convex support surface. In the cylindrical bearing of the frame hinge part is at least the said preferably metallic Bearing sleeve arranged with self-lubricating properties.

Due to the features of the invention, the hinge pin with respect to the Centered threaded plug. The spherical support surface is more integral Part of one of the two mutually supporting elements (Hinge pin or threaded plug), and the concave support surface lies with an annular area against the spherical support surface, which necessarily have a distance from the horizontally running vertex got to. In this ring area the spherical support surface is horizontal Inclined direction so that the vertical weight that the Compressed support surfaces, is deflected into a due to the inclination radial holding force that aligns the support surfaces to each other. By these features according to the invention have the lower end of the hinge pin no radial play compared to the admission of the hinge pin. A radial one Play can only occur in the cylindrical bearing of the hinge pin. Compared to conventional wrist bands where the lower ends the hinge pin is radially movable within the necessary play, is the possible inclination of the Hinge pin significantly reduced. By using a fixed metallic bearing sleeve in which the lower section of the hinge pin is performed, it is achieved that a defined storage of non-deformable Material (metal) guides the hinge pin in the frame hinge part. A such pin receptacle can with very well known from mechanical engineering low tolerances for self-lubricating plain bearings. A pivoting of the pin axis to the axis of the storage of the frame hinge part is in addition to the centering effect of the support surfaces largely restricted. There are low-friction metal bearings for door hinges e.g. known from DE 85 17 909 U, page 4, lines 13-16, however never with a self-centering bearing of the hinge pin tip.

The concave support surface is preferably in the form of a conical recess educated. But it can also be provided a blind hole, the edge forms the support surface and is provided with a radius or a chamfer. The edge of the blind hole must be smaller than the ball diameter.

Since the hinge pin does not have a height-adjustable sleeve is mounted, the axial support force must be on others Be introduced into the frame hinge part. This happens - as above mentioned - by direct support on the threaded plug over the on the one hand spherical and on the other hand concave, preferably conical Support surface. The concave formation of those interacting with the ball Support surface has two reasons. First of all, it is common with metallic Material pairings difficult to form a permanent point storage, supporting the weight held by the wing hinge part allows simultaneous rotation of the hinge pin. If the spherical Only support the support surface in a punctiform manner on a flat support surface, there is a risk that in the contact point after several thousand rotations break out material particles from the hinge pin. Due to the outbreaks in the Contact surface finds machining of the corresponding contact surface instead, which makes the storage run smoothly in no time is restricted. Such a "seizure" of the support surfaces can indeed theoretically counteracted by using high-strength materials become. However, this increases the costs disproportionately and questioned the economy of the wrist band. It will therefore proposed according to the invention, the opposite of the spherical support surface Support surface to be concave, so that at least one circular There is contact between the support surfaces. With such a Storage could not even with unusually high permanent loads Destruction of the support surfaces can be determined.

The main function of the concave formation of the opposite The supporting surface is the centering effect mentioned above. Preferably the spherical support surface by pressing a ball into the threaded plug realized. The concave section resting on this ball the lower end face of the hinge pin is centered due to that of the Wing band part of weight carried even on this ball. The possible Swiveling the axis of the hinge pin to the axis of the bearing in Frame hinge part (tilting of the hinge pin) is through this centering the lower support surface of the hinge pin is reduced. The spherical surface can also as a section, preferably as a hemisphere, directly to one the elements that support each other (hinge pins or threaded plugs) be molded on.

In addition, the support according to the invention by the Wing hinge part of the absorbed weight within the hinge pin bearing of the frame hinge part avoided a visible contact and support surface which could form traces of abrasion or movement, which the would impair the visual appearance of the wrist band.

It would be possible to have a single, the entire cylindrical bearing of the Frame hinge part protruding, self-lubricating metallic bearing sleeve use. However, a short metallic bearing sleeve is preferred in each case arranged at the top and bottom of the cylindrical bearing. This can result in costs while maintaining the precision of the storage be reduced.

The upper metallic bearing sleeve preferably has a radial shape extending collar on that on the peripheral surface around the upper opening the cylindrical bearing lies around. With proper Using the wrist band there is no contact between this radial Waistband and the lower surface of the wing hinge part. However, the threaded plug completely unscrewed from the frame hinge part, this drops Wing hinge part until it is on this upper radial collar self-lubricating metallic bearing sleeve. In this not for that normal use of the wrist strap is provided by the condition radial collar an auxiliary lubrication of the surfaces in contact causes both parts of the band.

The above can be used to form the self-lubricating bearing sleeves mentioned sintered bearings can be used. However, prefer to find Bearing sleeves made of steel, which are coated with a polytetrafluoroethylene, e.g. sold under the brand TEFLON are coated.

Within the wing hinge part, the upper hinge pin section is preferred held in a plastic sleeve made of fiber-reinforced plastic. This plastic sleeve is inserted in a receptacle of the wing hinge part. It can be designed as an eccentric sleeve, which means the distance of the plane of the closed wing to the level of the frame is adjustable.

The plastic sleeve preferably has an axial extension, which extends extends below the receptacle of the wing hinge part and into a recess protrudes above the storage of the frame hinge part. This Extension ensures emergency storage during assembly or disassembly and an emergency stop of the two band parts to each other, as long as no hinge pin is inserted into the two parts of the band. The plastic sleeve is firmly in the Admission of the wing hinge part is held and is in the absence of hinge pin due to the weight of the wing down into the recess of the Frame hinge part pressed. The lower end face of her is supported there axial extension preferably on the radial collar of the upper metallic Bearing sleeve. The wing hinge part can only be completely removed from the The frame hinge part can be released if the sash counteracts its weight is moved up until the axial extension no longer in the Recess of the frame hinge part protrudes. This measure enables it to a single fitter, one with the corresponding hinge parts fitted door. First the door leaf is pre-assembled in such a way that the axial extensions of the plastic sleeves on the wing band parts protrude into the recesses above the mounting of the frame hinge parts. Then the hinge pins for all hinges of the door inserted, whereby the tape parts are aligned with each other. Finally is screwed into each frame band part of the threaded plug, whereby the ball in the threaded plug is the lower end of the hinge pin lifts and the axial extension inside the recess upwards moves until it is no longer in contact with the opposite surface of the Has frame band part.

This extension also significantly increases the security against burglary. It is at this hinge is not possible, the band parts by violent knocking the hinge pin with the door closed. The wing hinge part is through the axial extension, which in the recess of the frame hinge part protrudes, held. A lift to loosen the Hinge parts are impossible with the sash closed.

In addition, the axial extension has an optical function, since it unobstructed view of the hinge pin when the threaded plug is raised Hinged hinge part covered. Finally, the axial extension on his Be provided with annular markings on the outer surface. When lifting of the wing hinge part moves by screwing in the threaded plug the axial extension upwards, so that with this movement the annular markings become visible. Based on the markings determine the axial adjustment position of the hinge.

The weight of the wing is preferably supported by a radial shoulder the plastic sleeve on this.

The weight transfer from the plastic sleeve to the hinge pin can be done over the upper end face on which a closed the upper end area of the plastic sleeve rests. In this case, however the weight over almost the entire length of the plastic sleeve initiated, which can lead to quite a large stretch. That’s why alternatively, the plastic sleeve can be provided with a stop that is axially based on a complementary stop of the hinge pin. This interacting stops are preferred by radial shoulders or flange surfaces of the components. The hinge pin can e.g. a have radial shoulder on which the lower end face of the plastic sleeve supported.

As an alternative to power transmission via the plastic sleeve, the power of transfer the wing hinge part to the hinge pin via a metal ring become. This metal ring is pushed onto the hinge pin. Preferably the metal ring is positively fixed in the axial direction, in particular with the help of a tongue and groove connection. In the hinge pins are one or several grooves are preferably molded in the extrusion process. At the Inner surface of the metal ring are complementary springs (radially inwards protruding ribs) which engage in the grooves of the hinge pin and which are supported in the end areas of these grooves.

The metal ring preferably has an upper sleeve section which is in the plastic sleeve protrudes into the wing hinge part, and the metal ring also extends axially at least partially below the receptacle of the wing hinge part, so that it axially from the contour of the wing hinge part protrudes. This protruding section of the metal ring lies with the assembled hinge within the recess above the bearing of the frame hinge part, so that the auxiliary storage described above can take removed hinge pin.

Finally, the recess of the wing hinge part should be at the top Cover plugs are closed to open cavities that are aesthetic act disadvantageously and in which dirt can accumulate, to avoid.

Fig. 1

eine Vorderansicht einer ersten Ausführungsform eines erfindungsgemäßen Gelenkbandes in entlang der Bandzapfenachse geschnittener Darstellung,

Fig. 2

eine vergrößerte Darstellung der Einzelheit X aus Fig. 1,

Fig. 3

eine der Fig. 1 entsprechende Darstellung der gleichen Ausführungsform des Gelenkbandes mit maximal nach oben verstelltem Flügelbandteil,

Fig. 4

eine Vorderansicht des Rahmenbandteils in ungeschnittener Darstellung mit den in dessen zylindrische Lagerung einzufügenden metallischen Lagerhülsen,

Fig. 5

eine Vorderansicht des Bandzapfens des Gelenkbandes aus Fig. 1,

Fig. 6

eine Draufsicht des Bandzapfens aus Fig. 5,

Fig. 7

eine Vorderansicht der Kunststoffhülse des Gelenkbandes aus Fig. 1,

Fig. 8

eine Draufsicht auf die Kunststoffhülse aus Fig. 7,

Fig. 9

eine ungeschnittene Vorderansicht des Metallrings zur Stützkraftübertragung auf den Bandzapfen,

Fig.10

eine alternative Ausführungsform eines Gelenkbandes in einer der Fig. 1 entsprechenden Darstellung,

Fig.11

eine Vorderansicht des Bandzapfens des Gelenkbandes aus Fig. 10,

Fig.12

eine Draufsicht auf den Bandzapfen aus Fig. 11,

Fig.13

eine ungeschnittene Vorderansicht der Kunststoffhülse des Gelenkbandes aus Fig. 10,

Fig. 14

eine Draufsicht auf die Kunststoffhülse aus Fig. 13,

Fig.15

eine der Fig. 1 entsprechende Darstellung einer weiteren Ausführungsform des erfindungsgemäßen Gelenkbandes.

Further features and advantages of the invention emerge from the subclaims and from the following description of the drawings. The drawings show in:

Fig. 1

3 shows a front view of a first embodiment of an articulated ligament according to the invention in a representation cut along the ligament axis,

Fig. 2

2 shows an enlarged view of the detail X from FIG. 1,

Fig. 3

1 corresponding representation of the same embodiment of the hinge with the wing band part adjusted to the maximum,

Fig. 4

3 shows a front view of the frame hinge part in an uncut view with the metallic bearing sleeves to be inserted into its cylindrical bearing,

Fig. 5

2 shows a front view of the hinge pin of the joint hinge from FIG. 1,

Fig. 6

5 shows a top view of the hinge pin from FIG. 5,

Fig. 7

2 shows a front view of the plastic sleeve of the hinge strap from FIG. 1,

Fig. 8

7 shows a plan view of the plastic sleeve from FIG. 7,

Fig. 9

an uncut front view of the metal ring for supporting force transmission on the hinge pin,

Figure 10

2 shows an alternative embodiment of an articulated band in a representation corresponding to FIG. 1,

Figure 11

10 shows a front view of the hinge pin of the joint hinge from FIG. 10,

Figure 12

11 shows a plan view of the hinge pin from FIG. 11,

Figure 13

10 shows an uncut front view of the plastic sleeve of the hinge strap from FIG. 10,

Fig. 14

13 shows a plan view of the plastic sleeve from FIG. 13,

Figure 15

a representation corresponding to FIG. 1 of a further embodiment of the joint band according to the invention.

1 consists of a frame hinge part 1, which via trunnion 2 and several screw holes 3 on a frame can be attached for a door or a window. It also includes a Wing hinge part 4, which with a multi-part mounting plate 5 on the Wing of a door or window is screwed. Frame hinge part 1 and wing hinge part 4 are connected to one another via the hinge pin 6, which in the present case as continuous, in both parts of the band 1.4 held pin is formed. Within the mounting plate 5 is one Adjustment device arranged, which allows the distance of the Wing to the axis of the hinge pin 6 in the transverse direction, i.e. in the illustration to vary in Fig. 1 in the horizontal direction. Such devices are known and need not be explained further here.

The hinge pin storage according to the invention can be particularly in the recognize enlarged representation of FIG. 2. Inside a cylindrical Storage 7 of the frame hinge part 1 are two self-lubricating bearing sleeves 8.9 arranged. Both bearing sleeves 8.9 are made of steel and have one Coating with polytetrafluoroethylene on the inside, which makes them maintain self-lubricating properties. In these hard bearing sleeves 8.9 the hinge pin 6 is guided essentially free of play. To the axial To transmit supporting force from the wing hinge part 4 to the frame hinge part 1, the lower end face of the hinge pin 6 forms a support surface 10, which rests on a spherical support surface 11 in a threaded plug 12 supports, which in a threaded portion 13 in the frame hinge part is screwed below the bearing 7. The spherical support surface 11 is formed by a steel ball pressed into the threaded plug 12. To screw the threaded plug 12, this has a socket wrench holder 14 to hold a hex key.

The lower support surface 10 of the hinge pin 6 has a conical shape Recess 32, which is annular against the spherical support surface 11 of the threaded plug 12 rests. As a result, the contact area in the Enlarged and compared to a flat support surface at the hinge pin end wear due to excessive pressure load does not occur. The the resulting ring-shaped contact area, on the other hand, is sufficiently small in order to avoid excessive friction when turning the hinge pin 6 to let, which could cause the threaded plug 12 to rotate. In order to additionally secure the turning of the threaded plug 12, this glued within the threaded portion 13 of the frame hinge part 1 become.

By comparing the representations of FIG. 1 and FIG. 3 it can be seen that by screwing the threaded plug 12 into the threaded portion 13th of the frame hinge part 1 with respect to a height adjustment of the sash hinge part 4 the frame hinge part 1 is effected. The maximum adjustment path can can be freely selected due to the dimensioning of the components and is included commercially available door hinges in the order of 5 mm.

The hinge pin 6 is in the wing hinge part 4 in a glass fiber reinforced Plastic sleeve 15 held in a receptacle 16 of the wing hinge part 4th is inserted. The upper opening of the receptacle 16 is with a cover plug 17 closed.

The transfer of the weight from the wing hinge part 4 to the Hinge pin 6 takes place with the help of a metal ring 18, which extends over a radial shoulder 19, in the present case a flange surface, of the plastic sleeve 15 against the peripheral surface around the lower opening of the receptacle 16 of the wing hinge part 4 supports. The metal ring 18 is in turn arranged stationary on the hinge pin 6. This connection goes in particular 5, 6 and 9. 5 and 6 show the upper portion of the hinge pin 6 three evenly on its circumference distributed grooves 20. The metal ring 18 has complementary on its inside Springs 21, i.e. ribs protruding inwards, which extend into the Protrude grooves 20 of the hinge pin 6. A spring 21 of the metal ring 18 can be seen in Fig. 1 in the sectional view. The spring 21 is supported in the end region 22 (cf. FIG. 5) of the groove in the axial direction, see above that they prevent the hinge pin 6 from moving upward relative to that Metal ring 18 and the wing band part 4 supporting the metal ring 18 prevented.

The plastic sleeve 15 is designed as an eccentric sleeve, which an adjustment the distance from the sash level to the distance from the frame level closed door or window. Even the plastic sleeve 15 has rib-shaped springs 29, which in the grooves 20 of the Insert hinge pin 6. In this way, the hinge pin becomes non-rotatable within the plastic sleeve 15 and thus within the receptacle 16 of the Wing hinge part 4 held.

The metal ring 18 has an upper sleeve portion 23 which in the Plastic sleeve 15 protrudes. So a firm connection between the Plastic sleeve 15 and the metal ring 18 causes, even if none Hinge pin 6 is inserted into the hinge. Furthermore, the lower one Section of the metal ring 18 an axial extension 24 of the wing hinge part 4. This axial extension 24 projects into a recess 25 above the cylindrical storage 7 of the frame hinge part 1 into it. When complete screwed down threaded plug 12 is the lower end face this axial extension 24 against a radially extending collar 26 the upper metallic bearing sleeve 8. This position is only in the Assembly and disassembly of the hinge strap achieved so that here by the PTFE-coated collar of the bearing sleeve 8 an emergency lubrication of the lower End face of this axial extension 24 is achieved. In the operating position (cf. FIG. 3), the support takes place solely via the spherical support surface 11 on the threaded plug 12.

As mentioned earlier, when installing a door or window the hinge without hinge pin 6 temporarily by inserting the axial extension 24 are pre-assembled in the recess 25. Subsequently can in the two to four hinges arranged one below the other the hinge pin 6 inserted and screwed in the threaded plug 12th be raised. Conversely, simple disassembly is possible by unscrewed the threaded plugs 12 and the hinge pins 6 from the hinges be knocked out and then the door or window sash is raised so far that the axial extensions 24 no longer in the Recesses 25 above the cylindrical bearings 7 of the frame band parts protrude. This enables a single worker to to assemble heavy door or window sashes independently or dismantle.

In Fig. 3 it can also be seen that the one formed by the metal ring 18 axial extension 24 the unobstructed view of the hinge pin 6 when raised Wing hinge part 4 blocked. In addition, on the by the metal ring 18th formed axial extension 24 arranged annular markings 27, which are visible from the outside when lifting the hinge pin 6. On these annular markings 27 can be the position of the hinge pin read off.

10 to 14 show an alternative embodiment of the invention Joint tape. Here is the weight of the wing hinge part 4 over the lower section of the plastic sleeve 15 'onto the hinge pin 6' transfer. For this purpose, the hinge pin 6 'is radial Provide shoulder 28 which forms a stop for the plastic sleeve 15 '. The lower end face 34 of the plastic sleeve 15 'lies on this shoulder and forms the complementary stop. The plastic sleeve 15 'itself has a radial shoulder 19 'which is against the peripheral surface, which the lower opening of the receptacle 16 in the wing hinge part 4th surrounds, supports. The lower section of the plastic sleeve 15 'thus fulfills essentially the same function as the metal ring 18 and forms one axial extension 24 which in the recess 25 above the bearing 7 for the hinge pin 6 'protrudes into the frame hinge part 1'. Like that Metal ring 18 of the first embodiment are also on the plastic sleeve 15 'annular markings 27 on the lower, axial extension 24 intended.

As in the previously described embodiment, grooves 20 'are in the Hinge pin 6 'arranged, which are arranged opposite each other here are and with axially extending ribs 29 'on the inner surface of the Plastic sleeve 15 'cooperate to twist the hinge pin 6' to avoid within the plastic sleeve 15 '.

A last simplified embodiment of the invention is shown in FIG. 15. Here, the hinge pin 6 "is supported against its upper end face 30 an upper closed region 31 of the plastic sleeve 15 ". As in 15 can be seen in the closed region 31 of the plastic sleeve 15 "a socket wrench holder 33 for receiving a hexagon wrench molded in, which serves to twist the plastic sleeve 15 ".

LIST OF REFERENCE NUMBERS

1

Frame hinge part

2

supporting journal

3

screw

4

Leaf hinge part

5

mounting plate

6,6 ', 6 "

ribbon pins

7

cylindrical storage

8th

upper bearing sleeve

9

lower bearing sleeve

10

support surface

11

spherical support surface

12

threaded plugs

13

threaded portion

14

Socket recording

15,15 ', 15 "

Plastic sleeve

16

admission

17

Cover plug

18

metal ring

19.19 ', 19 "

radial shoulder

20.20 '

groove

21

feather

22

end

23

upper sleeve section

24

axial extension

25

recess

26

radial collar

27

ring-shaped marking

28

radial shoulder

29.29 '

Spring, axial rib

30

upper face

31

closed area of the plastic sleeve

32

conical recess

33

Socket recording

34

lower face

Claims (18)

1. An adjustable joint hinge for doors or windows, having a leaf or casement hinge part (4) to be attached to the leaf or casement, on which part (4) a downwardly projecting hinge pin (6, 6', 6") is arranged, and a frame hinge part (1) to be attached to the frame, which part (1) comprises an axially open, cylindrical bearing arrangement (7) for accommodating the lower portion of the hinge pin (6, 6', 6") and which further comprises a threaded portion (13) located therebelow and aligned substantially with the bearing arrangement (7), into which threaded portion (13) a threaded stopper (12) is screwed for height adjustment of the leaf or casement hinge part (4), the hinge pin (6, 6', 6") being supported in the axial direction on the threaded stopper (12) via a spherical supporting surface, characterised by the following features:

   a) the hinge pin (6, 6', 6") is supported in the axial direction directly on the threaded stopper (12);

   b) one of the two supporting surfaces bearing one against the other is spherical in shape;

   c) the supporting surface (10) located opposite the spherical supporting surface (11) is of concave construction and rests with an annular contact area against the spherical supporting surface (11) ;

   d) at least one stationary, thin-walled, preferably metallic bearing bush (8, 9) with self-lubricating properties is arranged in the cylindrical bearing arrangement (7) of the frame hinge part (1).
2. An adjustable joint hinge for doors or windows, having a leaf or casement hinge part (4) to be attached to the leaf or casement, on which part (4) a downwardly projecting hinge pin (6, 6', 6") is arranged, and a frame hinge part (1) to be attached to the frame, which part (1) comprises an axially open, cylindrical bearing arrangement (7) for accommodating the lower portion of the hinge pin (6, 6', 6") and which further comprises a threaded portion (13) located therebelow and aligned substantially with the bearing arrangement (7), into which threaded portion (13) a threaded stopper (12) is screwed for height adjustment of the leaf or casement hinge part (4), characterised by the following features:

   a) the hinge pin (6, 6', 6") and the threaded stopper (12) are supported directly on one another in the axial direction via interacting supporting surfaces (10, 11) ;

   b) one of the two supporting surfaces exhibits a convex shape, rotationally symmetrical with regard to the longitudinal axis of the hinge pin;

   c) the second supporting surface (10) is concave in shape and rests with an annular contact area against the convex supporting surface (11) ;

   d) at least one stationary, thin-walled, preferably metallic bearing bush (8, 9) with self-lubricating properties is arranged in the cylindrical bearing arrangement (7) of the frame hinge part (1).
3. A joint hinge according to claim 1 or claim 2, characterised in that the supporting surface (10) located opposite the spherical supporting surface (11) takes the shape of a conical recess (32).
4. A joint hinge according to one of the preceding claims, characterised in that, to form the spherical supporting surface (11), a ball is attached to, preferably pressed into, the threaded stopper (12) and the lower end face of the hinge pin (6, 6', 6") forms the contact supporting surface (10).
5. A joint hinge according to one of the preceding claims, characterised in that a metallic bearing bush (8 and 9) is arranged at each of the upper and lower ends of the cylindrical bearing arrangement (7).
6. A joint hinge according to one of the preceding claims, characterised in that the metallic bearing bush (8) comprises a radially extending flange (26), which rests on the peripheral surface about the upper opening of the cylindrical bearing arrangement (7).
7. A joint hinge according to one of the preceding claims, characterised in that the metallic bearing bush (8, 9) consists of a steel coated with polytetrafluoroethylene (PTFE).
8. A joint hinge according to one of the preceding claims, characterised in that the upper portion of the hinge pin (6, 6', 6") is inserted into a plastics sleeve (15, 15', 15"), which is inserted into a receptacle (16) in the leaf or casement hinge part (4) and which preferably consists of glass or carbon fibre-reinforced plastics.
9. A joint hinge according to claim 8, characterised in that the plastics sleeve (15, 15', 15") takes the form of an eccentric sleeve.
10. A joint hinge according to claim 8 or claim 9, characterised in that the plastics sleeve (15', 15") comprises an axial extension (24), which extends below the receptacle (16) of the leaf or casement hinge part (4) and projects into a recess (25) in the frame hinge part (1), which is arranged above the bearing arrangement (7) of the hinge pin (6', 6").
11. A joint hinge according to claim 10, characterised in that the axial extension (24) comprises annular markings (27) at its outer surface.
12. A joint hinge according to one of claims 8 to 11, characterised in that the plastics sleeve (15, 15', 15") is supported in the axial direction via a radial shoulder (19, 19', 19") against the peripheral surface about the lower opening of the receptacle (16) of the leaf or casement hinge part (4).
13. A joint hinge according to one of claims 8 to 12, characterised in that the plastics sleeve (15, 15', 15") comprises a closed upper area (31), against which is supported in the axial direction the upper end face (30) of the hinge pin (6").
14. A joint hinge according to one of claims 8 to 12, characterised in that the plastics sleeve (15') comprises at least one limit stop (34), which is supported in the axial direction against a complementary limit stop (28) of the hinge pin (6').
15. A joint hinge according to one of claims 1 to 12, characterised in that there is pushed onto the hinge pin (6) a metal ring (18), which comprises a limit stop which is supported against a complementary limit stop on the hinge pin (6), and whose upper end face is supported against the peripheral surface about the lower opening of the receptacle (16) of the leaf or casement hinge part (4).
16. A joint hinge according to claim 15, characterised in that the interacting limit stops take the form of a tongue and groove connection, the limit stop of the hinge pin (6) being formed of at least one groove (20) in the outer circumference thereof, which extends in the axial direction from the upper end face of the hinge pin (6), and in that the limit stop of the metal ring (18) is formed by an axially extending rib or tongue (21) engaging in the groove (20) in the hinge pin (6).
17. A joint hinge according to claim 15 or claim 16, characterised in that the metal ring (18) comprises an upper sleeve portion (23), which projects into the plastics sleeve (15) in the leaf or casement hinge part (4), and in that the metal ring (18) extends axially at least partially below the receptacle (16) of the leaf or casement hinge part (4) and projects into a recess (25) in the frame hinge part (1), which is arranged above the bearing arrangement (7) of the hinge pin (6).
18. A joint hinge according to one of the preceding claims, characterised in that the upper opening of the receptacle (16) of the leaf or casement hinge part (4) is closed with a cover stopper (17).

Images