CN111566301B

CN111566301B - Hinge leaf of hinge

Info

Publication number: CN111566301B
Application number: CN201980007602.0A
Authority: CN
Inventors: K·齐默尔
Original assignee: Dr Hanh GmbH and Co KG
Current assignee: Dr Hanh GmbH and Co KG
Priority date: 2018-01-15
Filing date: 2019-01-09
Publication date: 2022-02-22
Anticipated expiration: 2039-01-09
Also published as: EP3740634B1; WO2019137938A1; RU2745951C1; CN111566301A; DE102018100774B3; EP3740634A1

Abstract

The invention relates to a hinge leaf (100) of a hinge for the articulated connection of a wing to a frame about a hinge axis (S), said hinge leaf having a longitudinal recess (3); a bearing bush (4) which is arranged in the longitudinal recess (3) and is rotatable about a laterally offset axis of rotation (D) parallel to the hinge axis (S) by means of a selectively attachable rotation assistance mechanism (12), said bearing bush comprising a bearing bush recess (5) for receiving a hinge pin; an internal thread (35) arranged at least in an end region of the longitudinal recess (3); and a lifting spindle (7, 7') having an external thread (8) and being screwable into the internal thread (35), which lifting spindle has a support side (9) for indirectly or directly supporting the bearing bush (4) and/or the hinge pin and is designed as a selectively attachable rotation aid (12), wherein, for the purpose of transmitting a torque between the lifting spindle (7, 7') and the bearing bush (4), a locking surface (13) is provided on the bearing bush (4) and a corresponding locking surface (14) which can be brought into operative connection with the locking surface (13) is provided on the lifting spindle (7, 7 '). According to the invention, the locking surface (13) is arranged on at least one groove (21a, 21b, 21c, 21d) formed on the circumferential end face (6), and the counter-locking surface (14) is arranged on at least one projection (22a, 22b, 22c, 22d) formed corresponding to the groove (21a, 21b, 21c, 21 d).

Description

Hinge leaf of hinge

Technical Field

The invention relates to a hinge leaf of a hinge for the hinged connection of a wing to a frame about a hinge axis, comprising: a longitudinal void; a bearing sleeve disposed in the longitudinal void, rotatable about a laterally offset axis of rotation parallel to the hinge axis by means of a selectively attachable rotation assistance mechanism, the bearing sleeve comprising a bearing sleeve void for receiving a hinge pin; an internal thread provided at least in an end region of the longitudinal void; in order to transmit torque between the lifting spindle and the bearing sleeve, in particular in an end-side region of the bearing sleeve which faces the lifting spindle in the operating position, a locking surface is provided on the bearing sleeve, in particular in an end-side end region of the bearing sleeve which faces the lifting spindle in the operating position, and a corresponding locking surface which can be brought into operative connection with the locking surface is provided on the lifting spindle, in particular on a second end-side end of the lifting spindle which faces the bearing sleeve in the operating position, in an end-side end region of the lifting spindle which faces the bearing sleeve in the operating position.

Background

Such a hinge leaf with a lifting spindle which can additionally be used as a rotation aid is known, for example, from DE 202013103109 Ul.

In principle, the height adjustment of the door leaf relative to the door frame can be carried out by means of a lifting spindle, which is screwed into the longitudinal recess via its external thread engaging into an internal thread of the longitudinal recess to such an extent that a further hinge leaf supported on the bearing bush and/or the hinge bolt has reached the position required in the frame for a correct height adjustment of the leaf.

The longitudinal axis of the bearing bush recess which is offset laterally from the axis of rotation of the bearing bush — in other words: the eccentric arrangement of the bearing bush recess relative to the effective circumference of the bearing bush serves to provide the possibility of adjusting the sealing contact pressure, i.e. to move the wing in a direction perpendicular to its front face relative to the frame. In order to achieve the required rotation of the bearing bush, it is known to first completely unscrew, turn it over without height adjustment and then use it as a rotation tool to rotate the bearing bush in the longitudinal recess, to be precise from a neutral position, on which the bearing bush and/or the hinge pin is usually supported in the operating position, up to +/-90 °. In the known system, an external hexagonal wrench, which is formed on the lifting spindle, engages in an internal hexagonal wrench, which is formed on the bearing bush. This enables the lifting spindle or a separate conventional rotary tool to be used selectively. The force required for the rotation can be relatively low here, since only when the hinged door is completely assembled and closed is a counterpressure generated on the bearing bush to be adjusted.

It has been shown that the cost of producing the locking surfaces and the counter-locking surfaces in a hexagonal manner is relatively high, based on the particular shaping and the required precision. In addition, the installation of the counter locking surface on the locking surface or of the lifting spindle serving as a rotation aid on the bearing sleeve must be carried out relatively precisely during assembly on the basis of the relatively precise fitting of the outer hexagon in relation to the inner hexagon, but this procedure is relatively time-consuming.

Disclosure of Invention

The object of the present invention is therefore to provide a hinge leaf which improves at least one of the above-mentioned disadvantages and in particular enables an improved adjustment of the door leaf relative to the door frame.

The invention solves the stated object by means of a hinge leaf having the features of the invention.

According to the invention, the locking surface is arranged on at least one circumferential end-side surface, in particular on an axial groove, and the counter-locking surface is arranged on at least one projection which is formed in accordance with the groove. The lifting spindle can thus be placed on the bearing bush in a relatively simple manner with the at least one projection engaging in the at least one recess and used as a rotation aid. In addition, the production of the recess with any desired shape and the corresponding projection is particularly cost-effective. The locking surface is preferably designed in such a way that the at least one groove interrupts or interrupts the circumferential end surface or end surface plane. For example, the recess is formed as a semicircular recess which is open toward the axial end of the bearing bush. The projections corresponding to the locking surfaces can thereby be introduced into the recesses of the locking surfaces, for example in the axial direction of the bearing bush and the lifting spindle. In principle, for the transmission of a rotational force from the lifting spindle to the bearing bush, an arrangement of one single recess and one single corresponding projection is sufficient. Preferably four separate grooves and corresponding projections are provided. Particularly preferably, the grooves and the corresponding projections are each arranged at an angle of approximately 90 ° to one another. In this way, the lifting spindle can be mounted on the bearing bush particularly quickly, in particular without the need for complex rotation of the lifting spindle relative to the bearing bush for engaging the locking surfaces with the counter-locking surfaces. In addition, particularly large torque transmission can be achieved. For stabilization purposes, the locking surfaces and the counter-locking surfaces can additionally be formed or defined by adjacent components, such as, for example, corresponding designs or contours of the end-side surfaces. Particularly preferably, the projection has a height formed in the direction of the longitudinal axis of the lifting spindle and a length formed transversely to the longitudinal axis of the lifting spindle, wherein the height corresponds at least to the length. Particularly preferably, the height of the projection is twice its length. The projection can thus have particularly large lateral side walls, so that particularly large force transmissions can be achieved thereby.

Preferably, the projection is constituted by at least one beam. For the purpose of transmitting rotational forces, the lifting spindle with the beam can therefore engage in a recess formed in the bearing bush. This makes it possible to produce the projection on the lifting spindle and thus also the lifting spindle, which is particularly cost-effective to produce. The beam can be constructed as a separate component or integrally with the lifting spindle. The beam may for example extend in the lifting spindle axial direction and project axially as a plug or "pin". It is particularly preferred that at least a part of the beam is oriented transversely or at least obliquely to the axial extension of the lifting spindle, so that the beam, for example as a transverse beam, can impart particular rigidity and strength to the lifting spindle.

For a particularly advantageous transmission of rotational forces between the lifting spindle and the bearing bush, the beam extends in its longitudinal direction preferably perpendicularly to the longitudinal axis of the lifting spindle and particularly preferably radially with respect to the longitudinal axis. This results in a particularly large lever arm and thus a particularly large torque for the force transmission.

Preferably, the lifting spindle has an outer ring which extends in particular in the axial direction and has an external thread and an inner ring which is arranged concentrically and is radially surrounded by the outer ring, wherein the webs which are designed as projections for the purpose of forming corresponding locking structures extend, preferably radially, between the outer ring and the inner ring. In particular, it is preferred if only at least one beam and one disk-shaped material connection forming the support side are provided between the outer ring and the inner ring. The lifting spindle is thus particularly cost-effective to manufacture.

In order to mount the lifting spindle on the bearing bush in a particularly simple manner, the beam projects axially with at least one section at least on one side, i.e. on at least one end side of the lifting spindle, from the inner ring and/or the outer ring. The beam can thereby be engaged in a relatively simple manner with the groove formed on the bearing bush.

The outer ring preferably has a first axially end-side section which is axially connected and which radially surrounds a section of the bearing sleeve if the bearing sleeve is in indirect or direct contact with the support side, and a second axially end-side section which at least partially surrounds the corresponding locking surface and which surrounds a section of the bearing sleeve if the locking surface and the corresponding locking surface are in engagement. A particularly reliable and durable connection between the lifting spindle and the bearing bush can thereby be ensured.

Preferably, the lifting spindle, in particular the inner ring, has a central axial recess with a contact contour, preferably arranged on the inner side of the directed recess, for attaching a rotary tool for transmitting a torque to the lifting spindle. The recess is particularly preferably designed as an internal hexagon, into which a conventional rotary tool, in particular with an external hexagon contour, can be inserted for rotating the lifting spindle.

In order to prevent the external hexagonal tool from being inserted or sliding through the recess formed in the inner ring, it may be advantageous to form at least one flange projecting in the direction of the recess on the contact contour approximately at half the longitudinal extent of the recess, on which flange the rotary tool may be supported with an end-side region and which thus serves as a stop for preventing the insertion of the rotary tool.

In one embodiment of the lifting spindle, the support side is formed on a first flat side of the disk-shaped section of the lifting spindle, and the projection projects in the axial direction of the lifting spindle from a second flat side of the disk-shaped section opposite the first flat side. The lifting spindle can thus be produced particularly inexpensively and with low weight. Particularly preferably, the outer ring in the form of an additional annular edge or an annular section projects beyond the second flat side in the axial direction of the lifting spindle, wherein the annular section can radially surround the longitudinal section of the bearing sleeve if the locking surface and the counter-locking surface are in operative connection.

It is particularly preferred that the lifting spindle comprises only an outer ring with an external thread, an inner ring with an axial clearance, a disk-shaped section with a support side and at least one beam connecting the outer ring and the inner ring.

In a preferred embodiment, the longitudinal recess has at least one radial positioning recess and the bearing sleeve has at least one first positioning projection, which preferably comprises a projection shoulder, wherein the lifting spindle is designed such that the first radial positioning projection can be brought into operative connection and latched with the positioning recess by means of the lifting spindle if the bearing sleeve and/or the hinge pin are in indirect or direct contact with the support side. In particular, the lifting spindle can engage with the end-side section at least radially inwardly from behind the projecting shoulder of the at least first radial positioning projection and thereby cause the first radial positioning projection to be pressed radially outwardly into the positioning groove. In the present case, a projection shoulder is to be understood as meaning a projection of the first radial positioning projection, which projection is designed in particular in the axial direction. If a torque is applied to the bearing bush, for example, from the lifting spindle during the height adjustment process, on the basis of a frictional connection by means of the support on the support side, the bearing bush can be reliably prevented from rotating together within the longitudinal recess on account of this advantageous measure.

In a further preferred embodiment, it is provided that at least one second radial detent projection or at least one detent recess or contour is provided on the bearing bush, which is in operative connection with at least one complementary detent recess or detent projection or contour of the lifting spindle if the locking surface and the counter-locking surface are in engagement. If the lifting spindle is used as a rotation aid, the "fit" of the lifting spindle on the bearing bush can thus be improved to prevent undesired loosening during the rotation process. In addition, the lifting spindle can be prevented from falling out of the longitudinal groove in a particularly simple manner. The support sleeve and/or the contour on the lifting spindle can be formed, for example, in the end face regions of the rotary tool position of the lifting spindle which face the opposing components, in particular on the circumferential side. The profiles may each have, for example, a conical configuration, a friction surface, a projection, a groove or a bulge. Alternatively or additionally, a latching lug, for example a clip or a latching lug, can be provided, which can engage in a recess formed on the respective other component. Particularly preferably, the lifting spindle can be selectively attachable to the bearing sleeve with the engagement surface and the counter-engagement surface being engaged or removable from the bearing sleeve with the engagement surface and the counter-engagement surface being disengaged, while overcoming the positioning force.

Advantageously, the support face faces an axial first end of the lifting spindle and the counter-locking face faces a second end of the lifting spindle axially opposite the first end. Thereby, the lifting spindle can be used differently with its two end side ends, so that the manufacturing and assembly costs can be relatively low. The counter-locking surface is preferably arranged in the region of a second end face axially opposite the first end face, particularly preferably the counter-locking surface at least partially forms the second end face.

Drawings

Two exemplary embodiments of the invention are explained in detail below with the aid of the figures, which differ only in the manner in which the respective lifting spindles are constructed. Fig. 1 to 3 relate to these two embodiments, fig. 4a, 4b and 5 show a lifting spindle according to a first embodiment, and fig. 6a, 6b and 7 show a lifting spindle according to a second embodiment. Shown schematically in the drawings:

fig. 1 shows a partial cross-sectional view of a hinge leaf according to the invention with a lifting spindle in an operating position;

fig. 2 shows a partial cross-sectional view of a hinge leaf according to the invention with a lifting spindle in a tool position;

fig. 3 shows a bearing bush of a hinge leaf in a perspective view;

fig. 4a and 4b show a first embodiment of a lifting spindle of a hinge leaf in perspective view, respectively;

FIG. 5 shows a first embodiment of a lifting spindle in a sectional view;

fig. 6a and 6b show a second embodiment of a lifting spindle of a hinge leaf, respectively, in perspective view; and

FIG. 7 shows a second embodiment of the lifting spindle in a sectional view;

Detailed Description

The embodiment of the hinge leaf 100 according to the invention shown in the drawings is part of a hinge for the articulated connection of a wing, not shown, to a frame about a hinge axis S. The hinge leaf 100 is shown as a frame hinge leaf.

The hinge leaf 100 comprises a fixing 1, which in the embodiment shown is used for fixing on a frame. A hinge 2 is formed to the fixing member 1. The hinge 2 comprises a longitudinal recess 3 in which a bearing bush 4 is arranged. The bearing bush is arranged rotatably about a rotation axis D parallel to the hinge axis S, but offset laterally, by means of a rotation assistance mechanism 12, which will be described in greater detail below. An internal thread 35 is provided in the longitudinal recess 3. A lifting spindle 7, 7' -with an external thread 8 complementary to the internal thread 35 is screwed into the internal thread 35 from below with respect to the operating position of the hinge leaf 100.

The bearing sleeve 4 has an axial bearing sleeve recess 5 with a longitudinal axis T which is offset laterally with respect to the axis of rotation D and which in the illustrated embodiment coincides with the hinge axis S. In other words, the bearing bush recess 5 is arranged centrally with respect to the effective outer circumference of the bearing bush 4. By "effective periphery" is meant the periphery defining the axis of rotation D of the bearing sleeve 4 in the longitudinal interspace 3.

The lifting spindle 7, 7' is sleeve-shaped and has an outer ring 24, an axially approximately centrally arranged disk section 29 and a centrally arranged axial inner ring 25. The lifting spindles 7, 7' have, in the operating position shown in fig. 1, on their upper side facing the bearing bush 4, a support side 9 on which the bearing bush 4 is supported. As can be seen in fig. 4a and 6a, the support side 9 is formed in particular on a first flat side 30 of the disk section 29 facing a first end-side end 32 of the lifting spindle 7, 7' and is radially surrounded by an annular shoulder 10. The annular shoulder 10 is an axial section of the outer ring 24 with the external thread 8, which delimits the lifting spindle 7, 7', and which at least partially radially surrounds the bearing sleeve 4, in particular the end-side section 16 of the bearing sleeve 4, if the bearing sleeve 4 is in indirect or direct contact with the support side 9, as shown in fig. 1.

As is also apparent from fig. 1, the bearing sleeve 4 is displaced in the direction of the arrow P in the longitudinal recess 3 of the joint 2 in such a way that the lifting spindles 7, 7' are screwed further into the longitudinal recess 3 from below or are screwed further out from below. For this screwing process, the lifting spindles 7, 7 'have a recess 26 with a contact contour 27 for attaching a rotary tool for transmitting a torque to at least one lifting spindle 7, 7', which in the illustrated embodiment is configured as a hexagon socket 11.

Four radial positioning recesses 17, which are distributed over the circumference and are offset by 90 ° in each case and are not shown in detail, are provided in the longitudinal recess 3 of the joint 2. Complementary radial positioning lugs 18 are likewise arranged on the bearing sleeve 4 offset by 90 ° in each case. It is provided that, if the bearing bush 4 is in indirect or direct contact with the support side 9, as is shown in fig. 1, the positioning projection 18 can be guided into the positioning recess 17 by means of the lifting spindle 7, 7' and latched therein. Furthermore, the detent projections 18 are elastically shaped such that they move back and the rotation of the bearing sleeve 4 in the longitudinal arrangement 3 is preferably released only if the detent projections 18 disengage from the detent recesses 17 or if a certain torque is exceeded. This defined torque is normally not exceeded in the operating position of the lifting spindles 7, 7' shown in fig. 1. As can be seen in particular from fig. 1 and 3, the positioning lugs 18 each have a projecting shoulder 19 which is designed such that it is engaged behind by the annularly projecting shoulder 10 of the lifting spindle 7, 7', if the lifting spindle is screwed into the internal thread 35 in its operating position in which the bearing bush 4 is supported on the support side 9. If a torque is applied to the bearing bush 4 in the direction P during the height adjustment process from the lifting spindles 7, 7' on the basis of a friction fit, for example by means of a support on the support side 9, the bearing bush 4 is reliably prevented from rotating together within the longitudinal recess 3 on account of this measure.

As already mentioned above, the bearing bush recess 5 is arranged eccentrically with respect to the effective outer circumference of the bearing bush 4. If the bearing bush 4 is rotated within the longitudinal recess 3, the longitudinal axis T and thus the hinge axis S are displaced relative to the hinge 2. In this way, a further hinge leaf, not shown in the figures, here a wing hinge leaf, is displaced relative to the hinge leaf 100 perpendicularly to the axis of rotation D, so that, for example, a change in the sealing contact pressure can be achieved. In order to be able to cause a rotation of the bearing sleeve 4 in the longitudinal recess 3, as is illustrated in fig. 2 by the arrow O, a locking surface 13 is provided in the lower end region of the bearing sleeve 4 and a corresponding locking surface 14 is provided on the lifting spindles 7, 7' in the region of the second end 33 on the side opposite the support side 9. As is shown in particular in fig. 3, the locking surface 13 in the present case comprises a total of four

recesses

21a, 21b, 21c, 21d which are arranged at an angle of 90 ° to one another and are each recessed from the circumferential end face 6 and interrupt the end face 6 in the circumferential direction. As is shown, for example, in fig. 4b, 6b and fig. 5 and 7, the counter-locking surface 14 provided on the lifting spindles 7, 7' is formed by four

complementary projections

22a, 22b, 22c, 22 d.

The

projections

22a, 22b, 22c, 22d are each formed by a

beam

23a, 23b, 23c, 23d, which extends transversely to the axial extension of the lifting spindles 7, 7' between an outer ring 24, in particular a ring segment 15, which extends in the axial direction and has the external thread 8, and a concentrically arranged inner ring 25 which is radially surrounded by the outer ring 24. The

beams

23a, 23b, 23c, 23d each extend in their height H or in their transverse direction, i.e. in the axial direction a of the lifting spindles 7, 7', from a second flat side 31 of the pan section 29 opposite the first flat side 30, so that a particularly large contact surface is formed for transmitting rotational forces. The

transverse beams

23a, 23b, 23c, 23d each have a height H, which is formed in particular in the direction of the longitudinal axis a of the lifting spindles 7, 7', and a length L, which is formed transversely to the longitudinal axis a of the lifting spindles 7, 7', wherein the height H corresponds in the present case to approximately twice the value of the length L. This also enables a relatively large rotational force transmission using relatively soft materials, such as plastics. As is shown in particular in fig. 5, the beam 23 projects axially beyond the inner ring 25 and/or the outer ring 24 in order to provide a particularly simple mounting of the lifting spindles 7, 7' on the bearing sleeve 4. In the inner ring 25, the recess 26 is formed with a contact contour 27, wherein at least one flange 28 projecting in the direction of the recess 26 is formed on the contact contour 27 approximately halfway the axial longitudinal extent of the recess 26, on which flange the rotary tool can be supported with its end region. Thereby it is prevented that the rotary tool may be pushed completely or fall through the gap.

The rotation of the bearing sleeve 4 can thus be effected by first screwing the lifting spindles 7, 7' completely out of their operating position shown in fig. 1, turning them over by 180 ° and then attaching them to the bearing sleeve 4 as a rotation aid 12 in the opposite position shown in fig. 2, i.e. in the tool position, so that the

projections

22a, 22b, 22c, 22d engage in the

recesses

21a, 21b, 21c, 21d and the corresponding locking surfaces 14 are therefore in operative connection with the locking surfaces 13. In this state, the annular section 15 of the outer ring 24 surrounds at least the end section 16 of the bearing sleeve 4 in a radial manner. Via the inner hexagon 11, the lifting spindles 7, 7' and thus the bearing bush 4 can be rotated by means of a rotating tool, which is not shown in the figures. Alternatively, the external thread 8 can be used as a handle if it protrudes from the hinge 2.

In order to improve the engagement of the lifting spindles 7, 7' on the bearing bush 4 in this tool position or "rotary operating position", an annular section 15 is provided which surrounds the corresponding locking surface 14. As is shown, for example, in fig. 4b, 6b, a contour 20 is formed on the inside of the ring segment 15, which contour has, for example, an increased roughness and can be brought into operative connection with a complementary contour 34 (see fig. 3) formed on the end segment 16 of the bearing sleeve 4 if the lifting spindles 7, 7' are used as a rotation aid 12 for rotationally actuating the bearing sleeve 4. The lifting spindles 7, 7' are prevented from being released from the bearing sleeve 4 by the engagement or abutment of the

contours

20, 34. Alternatively, the known positioning device may be provided with a positioning projection and a positioning groove.

The above description relates not only to the first embodiment of the lifting spindle 7 shown in fig. 4a, 4b and 5, but also to the second embodiment of the lifting spindle 7' shown in fig. 6a, 6b and 7. The second embodiment 7' of the lifting spindle differs from the first embodiment 7 in that it comprises an axial, internal projection 36 extending from the support side 9. The internal projection has an external diameter B which decreases in a direction pointing forward from the support side 9, so that the internal projection 36 has a conical configuration tapering in this direction. The design of the internal projection 36 is adapted to the support sleeve recess 5 in such a way that the internal projection 36 can be introduced into the support sleeve recess 5 in a self-centering manner by means of the conical design.

It should be clear that the scope of protection of the invention is not limited to the embodiments described. In particular, the structure of the hinge leaf and the bearing sleeve can be completely modified without changing the essence of the invention.

Reference numerals

100 hinge leaf

1 fixing element

2 hinge element

3 longitudinal space

4 support sleeve

5 bearing bush clearance

6 end side surface

7. 7' lifting spindle

8 external screw thread

9 supporting side

10 annular shoulder

11 inner hexagonal part

12 rotation auxiliary tool

13 locking surface

14 corresponding to the locking surface

15 annular segment

16 end side section

17 radial positioning groove

18 radial locating projection

19 convex shoulder

20 profile

21a groove

21b groove

21c groove

21d groove

22a projection

22b projection

22c projection

22d projection

23a Beam

23b Beam

23c Beam

23d Beam

24 outer ring

25 inner ring

26 gap

27 contact profile

28 Flange

29 disc shaped zone

30 first flat side

31 second flat side

32 end side end portion

33 end side end part

34 profile

35 internal thread

36 internal protrusion

Longitudinal axis A

B outside diameter

Axis of rotation D

Height H

Length of L

O arrow head

P direction

S hinge axis

Longitudinal axis of T

Claims

1. A hinged leaf (100) for the hinged connection of a wing to a frame about a hinge axis (S),

the hinge leaf has:

a longitudinal void (3);

a bearing bush (4) which is arranged in the longitudinal recess (3) and is rotatable about a laterally offset axis of rotation (D) parallel to the hinge axis (S) by means of a selectively attachable rotation-assistance mechanism (12), said bearing bush comprising a bearing bush recess (5) for receiving a hinge pin;

an internal thread (35) arranged at least in an end region of the longitudinal recess (3);

and a lifting spindle (7, 7') having an external thread (8) and being screwable into the internal thread (35), said lifting spindle having a support side (9) for indirectly or directly supporting the bearing bush (4) and/or the hinge pin and being configured as a selectively attachable rotation aid (12),

wherein, in order to transmit torque between the lifting main shafts (7, 7') and the supporting sleeve (4), the supporting sleeve (4) is provided with a locking surface (13) and the lifting main shafts (7, 7') are provided with corresponding locking surfaces (14) which can be in action connection with the locking surface (13),

it is characterized in that the preparation method is characterized in that,

the locking surface (13) is arranged on at least one groove (21a, 21b, 21c, 21d) formed on the circumferential end face (6), and the counter-locking surface (14) is arranged on at least one projection (22a, 22b, 22c, 22d) formed corresponding to the groove (21a, 21b, 21c, 21 d).

2. Hinge leaf according to claim 1, characterized in that the projections (22a, 22b, 22c, 22d) are constituted by beams (23a, 23b, 23c, 23 d).

3. Hinge leaf according to claim 2, characterized in that the beams (23a, 23b, 23c, 23d) are oriented perpendicular to the longitudinal axis (a) of the lifting spindle (7, 7').

4. Hinge leaf according to claim 2 or 3, characterized in that the lifting spindle (7, 7') has an outer ring (24) and a centrally arranged inner ring (25) radially surrounded by the outer ring (24), and that the beams (23a, 23b, 23c, 23d) extend between the outer ring (24) and the inner ring (25).

5. Hinge leaf according to claim 4, characterized in that the beams (23a, 23b, 23c, 23d) at least partially axially protrude from the inner ring (25) and/or the outer ring (24).

6. Hinge leaf according to claim 4, characterized in that the outer ring (24) has a connected annular shoulder (10) which radially surrounds a section (16) of the bearing sleeve (4) if the bearing sleeve (4) is in indirect or direct contact with the support side (9); and having an axial annular section (15) which at least partially surrounds the corresponding locking surface (14), said axial annular section surrounding a section of the bearing sleeve (4) if the locking surface (13) and the corresponding locking surface (14) are in engagement.

7. Hinge leaf according to any one of claims 1 to 3, characterized in that the lifting spindle (7, 7') has a central clearance (26) with a contact contour (27) for attaching a turning tool for transmitting torque to the lifting spindle (7, 7').

8. Hinge leaf according to claim 7, characterized in that at least one flange (28) projecting in the direction of the recess (26) is formed on the contact contour (27) approximately at half the axial longitudinal extension of the recess (26), on which flange a rotary tool can be supported with an end-side region.

9. Hinge leaf according to any one of claims 1 to 3, characterized in that the support side (9) is configured on a first flat side (30) of a dished section (29) of the lifting spindle (7, 7'), and that a projection (22a, 22b, 22c, 22d) of a second flat side (31) of the dished section (29) opposite to the first flat side (30) projects in the axial direction of the lifting spindle (7, 7').

10. Hinge leaf according to one of claims 1 to 3, characterized in that the longitudinal recess (3) has at least one radial positioning groove (17) and the bearing bush (4) has at least one first radial positioning projection (18), and the lifting spindles (7, 7') are configured such that the first radial positioning projection (18) can be brought into operative connection and latching with the positioning groove (17) by means of the lifting spindle (7, 7') if the bearing bush (4) and/or the hinge pin is in indirect or direct contact with the support side (9).