EP1126115B1 - Hinge with self-locking eccentric adjustment drive - Google Patents

Abstract

The adjustable joint frame has a frame hinge part and casement/leaf part interlinked. An abutment part (1) is fixed to the casement/leaf, and an adjustment part (2) is movably guided in a horizontal direction in a direction at right angles to the articulated axis (10). The adjusting drive comprises a cam (3) which has a cylindrical part (11) rotarily held in a cavity (12) in the adjustment's cavity. An eccentric cylindrical pin fits into an elongated hole in the abutment. The cavity forms at least one pair of supports for the peripheral surface of the cylindrical part.

Description

The invention relates to an adjustable hinge for doors or windows, with a frame to be fastened to the frame hinge part and a wing to be fastened wing hinge part, which is pivotally connected to the frame hinge part and composed of a wing-fixed abutment part and an adjustment part, wherein the adjusting member opposite the abutment part is guided displaceably in a direction perpendicular to the hinge axis, horizontal displacement direction, by means of a supported against the abutment part self-locking adjusting infinitely adjustable and lockable by at least one locking screw, wherein the adjusting comprises an eccentric, which rotatably held in a recess of the adjusting cylindrical Part and an eccentric, engaging in a slot of the abutment member, cylindrical eccentric pin has.

An adjustable hinge of this type is known from the EP 0 652 345 A1 , The known hinge band is adjusted by an eccentric which is rotatably mounted in the adjustment part via a cylindrical body which is coaxial with the axis of rotation of the eccentric and which rotatably engages in a cylindrical recess of a sliding block via a cylindrical eccentric pin arranged eccentrically to the axis of rotation, wherein the sliding block is in turn in the oblong hole the abutment part is guided displaceably with little play. The slider slidably guided in the oblong hole of the abutment part causes the self-locking of the adjusting drive. Due to the weight of the door or window sash creates a moment, which rotates a unilaterally hinged hinged wing around its center. This moment generates in the direction of displacement of the adjustment on the upper hinge a directed away from the frame tensile force and in the lower hinge a directed towards the frame thrust. When the locking screw is loosened, this pulling or pushing force on the sliding block in the abutment part acts on the eccentric pin. However, the eccentric is not twisted, but the sliding block is merely pressed against its lateral guidance. The friction occurring there is so strong that the sliding block and thus the Eccentric is held in its position. However, if the eccentric is turned over a tool, for example an Allen wrench, then the friction which is desired for the self-locking is overcome. This hinge has proven itself in practice, but requires a certain minimum size and a fairly high number of items.

Out EP 0 259 618 is also a door or window hinge known, the side adjustment is effected by means of an eccentric. In this hinge the eccentric is not rotatably received in the adjustment, but in the abutment part. The eccentric engages in a slot in the adjustment part to effect the lateral adjustment. A hinge with these features is apparent from the preamble of claim 2. A major disadvantage of the side adjustment of this hinge is that it has hardly self-locking properties due to the lack of sliding block. When you release the locking screw to adjust the side clearance between the wing and the frame of the eccentric is loaded by the force due to the sash weight and can easily rotate from its set position into a stop position. The result is that the wing must be completely realigned.

The invention has for its object to provide an adjustable hinge with a sufficient self-locking effect of the adjustment with dissolved locking screw, which has a few components and therefore is inexpensive and small in size to produce.

The object is achieved in that the recess forms a pair of support points for supporting the peripheral surface of the cylindrical part of the eccentric, so that an increased friction is created, which generates a self-locking of the eccentric, wherein the two bases of the support point pair on the same Side of the vertical median plane and lie on both sides of the horizontal median plane of the recess.

This solution is both in a hinge with rotatably held in a recess of the adjusting rotatably held eccentric (claim 1) and in a hinge with rotatably held in a recess of the abutment member held eccentric (claim 2).

In other words, the recess on a pair of support points, which exerts a self-locking of the adjustment causing clamping force on the eccentric due to the tensile force of the blade weight. The recess forms at least on the side against which the eccentric is pressed when the set screw due to the wing weight, a pair of support points whose bases have a certain angular distance to the upper and lower vertices of the cylindrical part of the eccentric. As a rule, there is no exact punctiform contact between the surface of the recess and the peripheral surface of the cylindrical part. Preferably, the contact surface of the recess substantially forms a plane which bears tangentially against the peripheral surface of the cylindrical part of the eccentric so that, strictly speaking, a line-shaped contact region is formed in each support point. Although it would also be possible to produce a point-shaped contact area by a contact tip in the recess, but this could result in too large surface pressure, whereby the surfaces of the components in question would be damaged. Hereinafter, the term "support point" thus refers to the contact area in a certain angular position of the recess, which rotatably holds the cylindrical part of the eccentric, regardless of the exact shape of the contact area.

The cylindrical part of the eccentric is thus supported via defined support points and not via a complementary cylindrical inner surface of the recess. Thus, the contact area between the cylindrical part and the recess decreases, whereby the surface pressure increases in the region of the support points. In addition, a supporting force can be transmitted substantially only in the radial direction on the peripheral surface of the cylindrical part of the eccentric. The force vector in the support points, which are substantially opposed to each other in the vertical direction, is composed of the horizontal components, which act parallel to the displacement direction and balance the forces due to the sash weight, and the vertical force components. The vertical force components are internal forces in the cylindrical part of the eccentric, which cancel each for a pair of support points and the size of which results from the angular position of the two bases, since the effective direction of the total force in each base - as I said - must be radial.

In a support point which lies on the horizontal center plane of the cylindrical part and thus the recess, the radial direction would correspond to the horizontal direction and thus the direction of displacement, so that the vertical force component would be zero. For a pair of fulcrums near the cap of the cylindrical part, i. near its vertical mid-plane, very small vertical forces would result in very large vertical force components due to small horizontal forces. On the other hand, permanent deformations of the metallic contact surfaces could be caused by excessive vertical force components.

By suitable positioning of the support point pair, a suitable amplification factor for the support force generated by the sash weight can be achieved. This support force can be converted via the friction coefficient, more precisely the static friction coefficient of the surfaces in contact with each other in a frictional force acting in the tangential direction of the peripheral surface of the cylindrical part of the eccentric and obstructs rotation of the eccentric. It is thus safely counteracted by a suitable choice of the position of the support point pair adjustment of the eccentric by a force applied over the wing in the horizontal direction of displacement, since a sufficiently high stiction arises.

If the effective direction of the adjusting force due to the blade weight is known (in the upper hinge from the frame and the lower hinge to the frame out), it is sufficient if only one side of the recess, a pair of support points is arranged. In this case it is sufficient to have on the opposite side, e.g. in the region of the horizontal median plane of the cylindrical part of the eccentric, to provide a third support point. The pair of fulcrums and the third fulcrum form a triangle in the corners of which lie the fulcrums for the cylindrical part of the eccentric. Such a receptacle is sufficient to guide the cylindrical part stationary but rotatable. In the other areas of the peripheral surface of the cylindrical part no further contact with the recess is required. The recess can thus be formed solely by wall sections in these three bases.

It makes sense that the recess surrounds the cylindrical part of the eccentric completely with a more or less large game, wherein Care must be taken that, when the adjusting force acts in the horizontal direction, there is only contact in the area of the support points of a support point pair. In addition, it makes sense to provide on both sides of the vertical center plane of the recess for the cylindrical part in each case a pair of support points. This produces the desired self-locking effect with adjusting forces acting in both horizontal directions. The hinge can thus be used both as an upper and as a lower hinge and both for the right stop and for the left stop of the wing.

In a preferred embodiment of the hinge, the recess comprises an upper and a lower, the cylindrical part of the eccentric with a small clearance embracing wall portion. At these two cylindrical wall portions are tangent to the peripheral surface of the cylindrical part extending wall sections. Each transition region between the end of a cylindrical wall section and a tangential wall section forms a support point. The transition regions between the cylindrical wall sections and the tangential wall sections located on the same side with respect to the vertical center plane of the recess form a pair of fulcrums.

Since the self-locking of the eccentric is done by the choice of the support areas of its cylindrical part, no sliding block is necessary. The adjustment drive and thus the hinge can be built very small.

The parts of the leaf hinge part, namely the adjustment part, the abutment part and the eccentric are preferably manufactured as zinc die-cast parts. The friction coefficient of this material leads to an optimal self-locking of the eccentric with sufficient ease of adjustment by an adjustment when the two bases of a pair of support points have an angular distance of 20 to 30 ° to the vertical center plane of the recess for the cylindrical portion. This results in the embodiment with two tangentially extending wall sections an angle of 40 ° to 60 °, which is enclosed in plan view of the tangential wall sections.

The eccentric preferably has a hexagonal recess for a hexagonal adjustment key. On the outside of the adjusting part can - as in the prior art mentioned - a display mark be attached to a scale on which by means of a pointer on the eccentric the current adjustment position of the eccentric can be read.

Fig. 1

eine räumliche Rückansicht der Teile des Flügelbandteils,

Fig. 2

eine Rückansicht des Verstellteils mit in die Ausnehmung eingefügtem Exzenter,

Fig. 3

eine Draufsicht auf die Kontur der Ausnehmung in der Rückwand des Verstellteils aus den Figuren 1 und 2,

Fig. 4

eine räumliche Draufsicht auf die Teile des Flügelbandteils und

Fig. 5

eine Draufsicht auf das Widerlagerteil mit in das Langloch eingreifendem Exzenter.

Further details of the present invention will become apparent from the following description of an embodiment with reference to the drawings. The drawings show in

Fig. 1

a spatial rear view of the parts of the wing hinge part,

Fig. 2

a rear view of the adjustment with inserted into the recess eccentric,

Fig. 3

a plan view of the contour of the recess in the rear wall of the adjustment of the Figures 1 and 2 .

Fig. 4

a spatial plan view of the parts of the leaf hinge part and

Fig. 5

a plan view of the abutment part with engaging in the slot eccentric.

The illustrated in the drawings leaf hinge part is composed of an abutment part 1, an adjustment part 2 and an eccentric 3. The abutment part 1 is with his in the Fig. 1 recognizable back placed against a door or window sash, with two trunnions 4 project through holes in the wing. On the abutment part 1, the adjusting part 2 is placed at interposed eccentric 3, wherein it engages around the upper and lower walls of the abutment part 1 with little play and is thus guided horizontally displaceable on the abutment part. The adjusting part 2 has slots 6,7, which are penetrated by a respective locking screw (not shown), which are screwed either in the wing itself or in threaded holes 8 of the abutment part 1, wherein the screw heads of the locking screws the adjustment part 2 against the abutment part. 1 or fix to the wing.

The adjustment part 2 has a pin receptacle 9 for the pivot pin of the hinge. The hinge axis 10 of the pin receptacle 9 extends in the vertical direction. The down from the pin receptacle outstanding Spigot portion is rotatably received in a journal bearing of a frame band part attached to the frame (not shown).

The eccentric 3 comprises a cylindrical part 11 which is inserted into a recess 12 in the rear wall of the adjusting part 2. On the in Fig. 1 visible rear side of the cylindrical part 11 and eccentric to the central axis of a hollow eccentric pin 13 is formed. The eccentric pin 13 engages with little play in a slot 14 of the abutment part 1 a. In the illustrated embodiment, the slot 14 is formed as a pocket, on the rear wall of the trunnions 4 are arranged.

On the front side of the cylindrical part 11 of the eccentric 3 concentric, a cylindrical projection 15 is formed with a reduced diameter. The cylindrical projection 15 has a hexagonal recess 16 for a hexagonal adjusting key (also called INBUS® key). Furthermore, a radial projection 17 is integrally formed on it. The cylindrical projection 15 and the radial projection 17 project through a recess 18 in the middle of the adjusting part 2 with sufficient clearance, so that a contact in the radial direction is avoided. Thus, the eccentric 3 is supported only with its cylindrical part 11 against the rear recess 12 in the adjusting part 2. The recess 18 comprises two mutually substantially diametrically opposed shoulders, which form a stop for the radial projection 17 of the eccentric 3 and thus limit the adjustment of the eccentric 3.

On the front side of the adjustment part 2, an adjustment scale 19 is applied in the periphery of the recess 18, which in conjunction with the radial projection 17 of the eccentric 3 indicates the adjustment position of the adjustment part 2 relative to the abutment part 1.

As mentioned, the radial projection 17 of the eccentric 3 has no contact with the recess 18, with the exception of the radial shoulders of this recess 18. In the horizontal direction of displacement of the eccentric 3 is held exclusively by its cylindrical part 11 in the recess 12 of the adjusting part 2. The recess 12 is, as in particular in the FIGS. 2 and 3 recognizable, from an upper cylindrical portion-shaped wall portion 20 and a corresponding lower wall portion 21st and four tangential wall sections 22 - 25 adjoining these cylindrical wall sections 20, 21. At a distance from the cylindrical part 11 of the eccentric 3 extend two ends of the tangential wall sections 22 - 25 connecting vertical wall sections 26 and 27th

In the region of the transitions of the cylindrical wall sections 20, 21 into the tangential wall sections 22 - 25, the four interpolation points 28 - 31 lie for the cylindrical part 11 of the eccentric 3. In this case, the interpolation points 28 lie on the right side of the vertical center plane 32 of the recess 12 , A first pair of vertices, and the left side vertices 30, 31 a second pair of vertices. The angle α between two tangential wall sections is about 45 °. It can be seen that the tangential support surfaces 22,24 unfold a wedge effect in the support points 28,29 when the cylindrical part 11 of the eccentric 3 is pressed in the horizontal direction to the right. The cylindrical member 11 is clamped between the upper tangential surface 22 and the lower tangential surface 24, so that an increased friction arises, which generates a self-locking of the eccentric adjusting drive against rotation due to a horizontally acting to the right. The same applies to a displacement of the cylindrical part 11 within the recess 12 to the left. In this case, the support points 30,31 cause jamming of the cylindrical part.

From the drawing figures 2 and 3 it can be seen that the essential, the self-locking causing contact between the recess 12 and the cylindrical part 11 of the eccentric 3 alone in the bases 28 and 29 on the one hand and 30 and 31 on the other hand prevails. The upper cylindrical wall portion 20 and the lower cylindrical wall portion 21 serve only to guide the received in the recess 12 cylindrical portion 11 of the eccentric 3. The cylindrical wall portions 20 and 21 do not contribute to the self-locking of the eccentric drive. Nevertheless, it makes sense to have the cylindrical part 11 of the eccentric 3 completely encompassed by a closed wall of the recess 12, inter alia, to prevent ingress of liquid and dirt in the contact area between the eccentric 3 and recess 12.

Depending on the material pairing, the clamping effect of the support point pairs 28, 29 and 30, 31 can be increased by displacing the support points 28 - 31 closer to the vertical center plane 32 of the recess 12. If, however, the support points 28 - 31 are displaced in a circular extension of the cylinder-section-shaped wall sections 20, 21 towards the horizontal center plane 33 of the recess 12, the clamping force and thus the self-locking effect of the eccentric drive are reduced. Thus can - as already mentioned - by optimal choice of the position of the bases 28 - 31, a self-locking effect can be achieved, which reliably prevents unintentional rotation of the eccentric 3 due to the forces applied by the wing, but at the same time a rotation of the eccentric 3 by means of an adjusting tool without excessive force required.

It can be seen that the exact course of the walls of the recess 12 for the self-locking effect is not critical. It only needs to be taken to ensure that with a horizontal displacement of the cylindrical part 11 of the eccentric 3 only contact in the bases 28,29 and 30,31 prevails and in the area between the support points of a pair of support points 28,29 and 30th , 31 no further contact with the peripheral surface of the cylindrical part 11 of the eccentric 3 consists.

The drawings show only an embodiment of the invention according to claim 1, in which the eccentric 3 is rotatably held in a recess 12 of the adjusting part 2 and the eccentric pin 13 engages in a substantially rectangular slot 14 of the abutment part 1. However, it is readily apparent that the kinetic reversal, in which the cylindrical part 11 of the eccentric 3 in a recess 12 corresponding recess in the abutment part 1 is held and in which the eccentric pin 13 engages in a slot 14 corresponding slot in the adjusting part 2 , works the same way.

LIST OF REFERENCE NUMBERS

1

Abutment part

2

adjusting part

3

eccentric

4

supporting journal

5

screw

6

Long hole

7

Long hole

8th

threaded hole

9

pin receiver

10

joint axis

11

cylindrical part of the eccentric

12

recess

13

eccentric

14

Long hole

15

cylindrical projection

16

hexagonal recess

17

radial projection

18

recess

19

Verstellskala

20

cylindrical wall section

21

cylindrical wall section

22-25

tangential wall section

26-27

vertical wall section

28-31

base

32

vertical midplane

33

horizontal median plane

α

Angle between tangential wall sections

Claims (6)

1. Adjustable strap hinge for doors or windows, with a frame strap part to be fastened to the frame and a leaf strap part, which is to be fastened to the leaf, is hinged to the frame strap part and is composed of an abutment part (1) fixable to the leaf and an adjusting part (2), wherein the adjusting part (2) is displaceably guided in relation to the abutment part (1) in a horizontal displacement direction running at right angles to the hinge axis (10), is infinitely adjustable by means of a self-locking adjusting drive supported against the abutment part (1) and is lockable by means of at least one locking screw, wherein the adjusting drive comprises an eccentric (3), which has a cylindrical part (11) rotatably held in a recess (12) of the adjusting part (2) and a cylindrical eccentric pin (13), which is eccentric to said cylindrical part and engages into an elongated hole (14) of the abutment part (1), characterised in that the recess (12) forms a support point pair (28, 29 or 30, 31) for support of the peripheral face of the cylindrical part (11) of the eccentric (3), so that an increased friction occurs, which generates a self-locking of the eccentric (3), wherein the two support points (28, 29 or 30, 31) of the support point pair lie on the same side of the vertical centre plane (32) and on both sides of the horizontal centre plane (33) of the recess (12).
2. Adjustable strap hinge for doors or windows, with a frame strap part to be fastened to the frame and a leaf strap part, which is to be fastened to the leaf, is hinged to the frame strap part and is composed of an abutment part (1) fixable to the leaf and an adjusting part (2), wherein the adjusting part (2) is displaceably guided in relation to the abutment part (1) in a horizontal displacement direction running at right angles to the hinge axis (10), is infinitely adjustable by means of a self-locking adjusting drive supported against the abutment part (1) and is lockable by means of at least one locking screw, wherein the adjusting drive comprises an eccentric (3), which has a cylindrical part (11) rotatably held in a recess (12) of the abutment part (1) and a cylindrical eccentric pin (13), which is eccentric to said cylindrical part and engages into an elongated hole (14) of the adjusting part (2), characterised in that the recess (12) forms a support point pair (28, 29 or 30, 31) for support of the peripheral face of the cylindrical part (11) of the eccentric (3), so that an increased friction occurs, which generates a self-locking of the eccentric (3), wherein the two support points (28, 29 or 30, 31) of the support point pair lie on the same side of the vertical centre plane (32) and on both sides of the horizontal centre plane (33) of the recess (12).
3. Adjustable strap hinge according to claim 1 or 2, characterised in that the recess (12) has a respective support point pair (28, 29 and 30, 31) on both sides of the vertical centre plane (32) of the recess (12).
4. Adjustable strap hinge according to one of claims 1 to 3, characterised in that the recess (12) comprises an upper and a lower wall section (20 and 21) engaging around the cylindrical part (11) of the eccentric (3) with slight play, wherein wall sections (22, 23, 24, 25) running tangentially to the peripheral face of the cylindrical part (11) adjoin these cylindrical wall sections (20, 21) and wherein the transition regions between the cylindrical wall sections (20, 21) and the tangential wall sections (22, 24 or 23, 25) lying on one side of the vertical centre plane (32) of the recess (12) form a support point pair (29, 29 or 30, 31).
5. Adjustable strap hinge according to claim 4, characterised in that the angle (α) between two tangential wall sections (22, 24 or 23, 25) on one side of the vertical centre plane (32) of the recess (12) amounts to between 40° and 60°.
6. Adjustable strap hinge according to one of the preceding claims, characterised in that the eccentric (3) has a hexagonal recess (16) for engagement of a hexagon adjustment key.

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