EP1126113B1 - Adjustable hinge with centering pivot pin bearing - 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

The invention relates to an adjustable hinge for doors or windows, with a wing band part to be mounted on the wing, on which a downwardly projecting hinge pin is arranged, and to be fastened to the frame frame hinge part having an axially open, cylindrical journal bearing for receiving the lower portion of Has a hinge pin and an underlying, substantially aligned with the journal bearing threaded portion into which a threaded plug for adjusting the height of the wing hinge part is screwed, wherein the lower end of the hinge pin on the threaded plug on mutually fitting, curved support surfaces and wherein the hinge pin in a in the Journal bearing recorded bearing sleeve is guided.

Such wristbands are known for example from the patent application of the applicant with the publication number DE 198 10 081 A1 , In the case of the hinge described here, a thin-walled metallic bearing sleeve, preferably made of sintered metal with self-lubricating properties, is inserted into the cylindrical journal bearing of the frame hinge part. The lower end of the pin is provided with a concavely curved end face, which has substantially the shape of a conical surface. In the threaded plug a hardened metal ball is pressed. The free surface of the metal ball of the threaded plug on the one hand and the concave conical surface in the end region of the hinge pin on the other hand form the two along a ring-shaped contact area against each other adjacent support surfaces. The advantage of such a hinge is that the over a ring-shaped contact area against each other supporting support surfaces exert a centering force on the lower hinge pin end. Gravity pushes the hinge pin in its lowest position in which is held by the conical shape of its support surface of the hinge pin centered to the spherical support surface of the threaded plug. The hinge pin can thus move freely only at its upper end in the context of the game of the bearing sleeve. The resulting due to the play of the hinge pin in the journal bearing skew is halved compared to a hinge pin with free pin end. In addition, the support of the lower pin end on the threaded plug results in a further advantage compared to hinge bands whose axial support force is transmitted over a radially extending surface in the contact region of the two band parts become. In this contact area creates an abrasion that leads to a contamination of the joint band after a short time. In a support on the lower end of the pin abrasion occurs at the bottom of the journal bearing, so that it can not produce visible from the outside soiling.

The bearing sleeve in the journal bearing allows a low-friction pin guide and a reduction of the game of the journal bearing.

The well-known door hinge is quite expensive to manufacture. The bearing ball must be inserted into the threaded plug in a separate manufacturing step. Also, due to the large number of parts, the assembly is quite complicated and only possible with relatively large peg diameters.

Object of the present invention is to develop a hinge of the type described above such that while maintaining a low trunnion low cost and a simplified tape assembly is possible.

This object is achieved in that the bearing sleeve is closed in the axial direction by a lower end wall, the side facing the hinge pin forms a complementary to the curvature of the lower pin end arched support surface.

In other words, the bearing sleeve is closed at the lower end with a closure wall, which at least on the inside of the bearing sleeve facing side has a curved surface which cooperates with the support surface at the lower end of the pin. By integrating the support surface in the bearing sleeve no separate component (ball) must be pressed into the threaded plug. The bearing sleeve is usually pressed into the journal bearing, so that it is radially fixed. In addition, it is usually rotationally held in the journal bearing, so that no rotation of the hinge pin on the bearing sleeve can be transferred to the underlying threaded plug. In this way, the risk is eliminated that is screwed by the rotation of the hinge pin of the threaded plug in the threaded portion of the frame hinge part.

The bulges can be arbitrary both at the spigot end and at the end wall. It is only crucial that the bulges to each other are complementary, so that the support surfaces insert into each other and fix the spigot end relative to the bearing sleeve. In this case, the support surfaces should preferably be formed so that an annular contact area is formed. This is the case, for example, when the lower end of the spigot has a cone-shaped support surface which lies like a cap over a spherical upper support surface of the bearing sleeve.

In particular, when the end wall of elastically deformable material, in particular made of plastic, the support surface can play-free in the complementary support surface of the lower pin end insert. The end wall may have a convex support surface, for example in the form of a ball cap formed support surface. The lower spigot end, which consists of metal, is then provided with a spherical recess. This can be introduced either by injection molding or by drop forging method in this metallic component.

Also, the threaded plug facing side of the end wall may have a curved to the curvature of a support surface of the threaded plug complementary curved support surface. This can be concave or convex regardless of the curvature of the upper support surface and center the bearing sleeve relative to the threaded plug. Preferably, this second support surface is formed spherical cap and cooperates with a concave support surface of the threaded plug. However, this second support surface pair has only a minor importance, since the end wall is already held in the journal bearing by virtue of the play-free fit of the bearing sleeve.

The integration of the support surfaces in the bearing sleeve reduces the number of components of the hinge. It no longer has a ball attached to the lower end of the pin or on the threaded plug. In particular, when using a plastic sleeve, the spherical cap-shaped support surfaces can be formed in the production of the sleeve by injection molding. Even when producing the threaded plug and the pin-shaped hinge pin, the production of the recesses for forming the concave support surfaces requires no complex processing steps. The hinge according to the invention is thus easy to assemble and inexpensive to manufacture.

Even when using a metallic bearing sleeve, the introduction of a spherical body can be realized in the lower end wall. A hardened metal ball body can either be inserted in a sintering process during production of the metallic bearing sleeve. Alternatively, a recess can be provided in the end wall, so that an annular opening is formed, which can be pushed onto a spherical body with a receiving groove extending along the equator.

Preferably, the journal bearing has an axially extending groove into which a radial projection of the bearing sleeve engages. This radial projection protects the bearing sleeve against rotation in the journal bearing. Characterized the transmission of a rotational movement is avoided by the lower end of the spigot on the threaded plug, as between the lower end of the spigot and the threaded plug fixed in the direction of rotation end wall of the bearing sleeve.

As already mentioned, the bearing sleeve may be made of plastic. The curved support surfaces can be formed during injection molding of this sleeve. Alternatively, here too, a support body - preferably made of a harder material - are encapsulated with the plastic of the bearing sleeve.

Fig. 1

eine schaubildliche Darstellung der Bandteile des Gelenkbandes,

Fig. 2

eine in der Ebene der Längsachse des Bandzapfens geschnittene Rückansicht des Gelenkbandes,

Fig. 3

eine vergrößerte Darstellung des Zapfenendes und des Gewindestopfens in geschnittener Darstellung,

Fig. 4

eine geschnittene Darstellung der Lagerhülse und

Fig. 5

eine Unteransicht der Lagerhülse aus Fig. 4.

The accompanying drawings show an embodiment of the hinge according to the invention. It shows

Fig. 1

a perspective view of the hinge parts of the hinge,

Fig. 2

a rear view of the hinge, cut in the plane of the longitudinal axis of the hinge pin,

Fig. 3

an enlarged view of the spigot end and the threaded plug in a sectional view,

Fig. 4

a sectional view of the bearing sleeve and

Fig. 5

a bottom view of the bearing sleeve Fig. 4 ,

That in particular in the Fig. 1 and 2 to be recognized hinge consists of a frame hinge part 1 and a wing hinge part 2, which are hingedly connected to each other via a hinge pin 3. The hinge pin 3 is rotatably held in a journal receptacle 4 of the wing hinge part 2. Its lower half protrudes into a bearing sleeve 5, which is inserted in the journal bearing 6 of the frame hinge part 1.

As in particular in the 4 and 5 can be seen, the lower end of the bearing sleeve 5 is closed by a closure wall 7, which each has a hemispherical support body on both sides, which forms a support surface 8.9. On the upper support surface 8, a spherical cap-shaped, concave support surface 10 of the hinge pin 3 is supported. The lower support surface 9 of the bearing sleeve 5 is supported in a concave support surface 11 of a threaded plug 12, which is formed by a central, spherical cup-like depression of the threaded plug 12. By cooperating support surfaces 8.9, the lower pin end is fixed radially relative to the bearing sleeve 5 and against the threaded plug. A pivoting of the hinge pin 3 within the bearing sleeve 5 is possible only in the upper sleeve area, since the lower end of the journal is held. As a result, the angle of the maximum inclination of the hinge pin 3 is reduced.

As in Fig. 5 To recognize the bearing sleeve 5 has a radial projection 13 which extends along the longitudinal direction of the sleeve and projects into a correspondingly shaped groove of the journal bearing 6 of the frame hinge part 1. In this way, the bearing sleeve 5 is secured against rotation in the journal bearing.

Especially in the 4 and 5 can be seen at two diametrically opposite positions in the region of the edge of the end wall 7, ie outside the support surfaces 8,9 of the end wall 7, apertures 14, which allow an outflow of air or liquid located within the bearing sleeve. Without these openings 14 3 air or rainwater would remain in the space between the hinge pin 3 and the bearing sleeve 5 when inserting the hinge pin 3, whereby on the one hand a complete insertion of the hinge pin 3 in the bearing sleeve 5 would be difficult and on the other by water inclusions There is a risk of corrosion.

LIST OF REFERENCE NUMBERS

1

Frame hinge part

2

Leaf hinge part

3

ribbon pins

4

pin receiver

5

bearing sleeve

6

chocks

7

end wall

8th

support surface

9

support surface

10

concave support surface of the hinge pin

11

concave support surface of the threaded plug

12

threaded plugs

13

radial projection

14

breakthrough

Claims (11)

1. An adjustable flag hinge for doors or windows, having a sash hinge part (2) for attachment to the sash, on which sash hinge part (2) there is arranged a downwardly projecting hinge pin (3), and having a frame hinge part (1) for attachment to the frame, which frame hinge part (1) comprises an axially open, cylindrical pivot bearing (6), for accommodating the lower portion of the hinge pin (3), and a threaded portion located therebelow and substantially aligned with the pivot bearing (6), into which threaded portion a threaded plug (12) is screwed for height adjustment of the sash hinge part (2), the lower end of the hinge pin (3) being supported on the threaded plug (12) via arched supporting surfaces resting against one another and the hinge pin (3) being guided in a bearing bushing (5) accommodated in the pivot bearing (6), characterised in that the bearing bushing (5) is closed in the axial direction by a lower closing wall (7), the side of which facing the hinge pin (3) forms an arched supporting surface (8) complementary to the arch of the lower pin end.
2. A flag hinge according to claim 1, characterised in that the side of the closing wall (7) facing the threaded plug (12) forms an arched supporting surface (9) complementary to the arch of a supporting surface (11) of the threaded plug (12).
3. A flag hinge according to claim 2, characterised in that both supporting surfaces (8, 9) of the closing wall (7) are arched in the manner of spherical caps and the supporting surfaces (10 and 11) on the lower pin end and the threaded plug (12) are each arched concavely.
4. A flag hinge according to any one of the preceding claims, characterised in that the pivot bearing (6) comprises an axially extending groove, in which there engages a radial projection (13) on the bearing bushing (5).
5. A flag hinge according to any one of the preceding claims, characterised in that the bearing bushing (5) consists of plastics.
6. A flag hinge according to claim 5, characterised in that a metal ball is inserted into the closing wall of the bearing bushing.
7. A flag hinge according to claim 6, characterised in that the metal ball is moulded around with the plastics material of the bearing bushing.
8. A flag hinge according to any one of claims 1 to 4, characterised in that the bearing bushing consists of metal with self-lubricating properties.
9. A flag hinge according to claim 8, characterised in that a ball of hardened metal is inserted in the closing wall.
10. A flag hinge according to claim 5, characterised in that the bearing bushing (5) is produced in one piece with the closing wall (7) by the injection moulding process.
11. A flag hinge according to any one of the preceding claims, characterised in that the closing wall (7) of the bearing bushing (5) comprises at least one opening (14).

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