EP0943756B1 - Door fitting - Google Patents

Abstract

The stop has an outer plate (10) with a peripheral edge (11) which covers a location plate (14) and supports an outer grip or button (18). The peripheral edge is reduced inwardly with respect to its surface expansion, and it supports the outer plate. The peripheral edge clamps a plane (E) with an inner abutting edge (32), and is curved with a bending radius. The location plate also positively extends over a strengthening plate (72), which has a peripheral edge (74) with a similar shape to the location plate and which lies flush against it.

Description

The present invention relates to a door fitting according to the preambles of claims 1 and 22.

Such fittings are mainly used as so-called. Protective fittings where there are higher requirements in terms of strength and safety.

Conventionally, one has e.g. According to DE-U-8 513 871 under the outer shield of a fitting set a hard steel plate and including a filler plate made of malleable cast iron, which naturally gave a heavy design. In order to achieve protection against tapping, hardened deflector cams were arranged at fastening points (compare DE-U-8 023 871); an outer cover of the lock cylinder by a protective plate is described in DE-U-8 716 550.

A hardware construction that is more adaptable to different needs is apparent from EP-B-0 502 319. It uses as a stopper body a honeycomb or ribbed work, in which the cylinder cover is elastically-yielding clamped and which receives at least one steel plate to the outside within a marginal projection. However, this can lead to complex, consisting of many parts designs, the existing zinc diecast stop body for different stitch dimensions must each be specially designed so that in addition to the production and warehousing expensive.

DE-U-87 10 518 discloses a door fitting whose main component is a protective cap, namely a cylinder lock cover with inserted cover plate. The cap is elastically supported by a leaf spring on a base plate. A decorative outer shield contributes little to the stability. Underneath is a likewise thin lower shield, which leads screw cams with sleeve heels to the correct mounting position. These screw cams define the distance in the cavity between the base plate and bottom plate in only three places. The latter is a thin retaining plate, which does not form a reinforcing plate and is inserted with its lower end in the peripheral edge of the outer shield, without touching the door leaf. At the upper end of the folded peripheral edge of the lower plate overlaps the base plate, without touching it. Therefore, a support function of the lower shield between the outer shield and the base plate is missing, so that the known fitting attackable and strong violence is hardly grown.

It is an important object of the invention to overcome these and other drawbacks of the prior art by economical means and to provide an improved door fitting that meets, as needed, medium, increased or high protection needs. It should be quick and exactly mountable. The aim is also a simple construction, which also provides scope for convenient adaptation to local conditions.

Main features of the invention are specified in claim 1. Embodiments are the subject of claims 2 to 20.

Starting from a door fitting with an outer shield, which has a peripheral edge, which covers at least one insert plate and attacking her, tap-protected threaded bushings and wearing an outer handle or button, with an inner shield, which has a lower plate with lugs for screws, passing through a door leaf can be screwed to the threaded bushes, with a bearing bush on the inner shield for an inner handle, which has a square hole for rotationally driving a form-fitting mounted at the opposite end in the outer handle or knob square, and with recesses on the outer and inner shield and on the insert plate for receiving a lock cylinder , which may be externally provided with a cylinder cover, the invention according to the characterizing part of claim 1, that the peripheral edge of the insert plate projects transversely to the surface extent inwardly and supports them and the outer shield on the door leaf, that the Einlagepl Atte a reinforcing plate at least substantially positively engages over and that the reinforcing plate has a peripheral edge which is similar to that of the insert plate and closely fitting so that the abutment edges are aligned.

The insert plate thus formed has the basic structure of a flat shell which, thanks to its peripheral edge, is extremely stable and fits snugly against the door leaf. The covered by her outer shield is practically the same shape and forms a kind of shapely outer skin on the support body of the insert plate. This can be fastened quickly and reliably by means of the thread socks passing through them. This achieves a simple way an extraordinary stiffening, so that the fitting also withstand great external violence good. Because the plates are penetrated by the threaded bushes and fixed by these, creates a high-strength stop body, which withstands even stubborn burglary attempts. Preferably, the insert plate and / or the reinforcing plate made of steel, if necessary, also made of hardened steel, so that very high resistance to tapping and Aufhebelversuche is guaranteed.

The peripheral edge can be curved with a bending radius, so not be sharp, so that inside a rounded groove is present. With high structural strength achieved in this way at the same time best connection to inner and / or outer elements.

For the assembly we for the permanent assurance of the usability, it is favorable, if for additional support of the insert plate on the door leaf an insert is present, which leads at the same time the cylinder cover. This inner support can be designed so that folds of the reinforcing plate, which protrude into an opening of the insert plate, enclose the cylinder cover, namely under centering an existing at the latter federal. These bends can be bent towards the insert plate and enclose the cylinder cover at its outer edge. This means that on the one hand, the cylinder cover has a completely secure fit and on the other hand, a inserted into the door and the door fitting profile cylinder is held virtually free of play inside.

Preferably, the insert is a plastic part and firmly connected to the insert or the reinforcing plate, in particular glued. This ensures an accurate position fixation. By the use is formed as an oval ring, which comes to rest with a circumferential rib on the door leaf, high dimensional stability and dimensional stability are achieved in a simple manner, which further supports the functionality of the fitting.

An advantageous embodiment is that the outer shield and the or each plate located underneath have a notched receiving hole for a shape-adapted profiled button neck. Here, too, therefore, the modular principle is applied, because this design makes it possible to attach to one and the same substructure different buttons, which can still be decided on site, in which direction (an the door to the left or right, depending on the type of stop) this happens. A practical embodiment provides that over the circumference of the neck in particular four semicircular ribs and according to the circumference of the receiving hole as many equally shaped notches are evenly distributed. The exact form-fitting ensures fast and secure installation and anti-rotation. When using an external handle instead of a door knob, a sliding bearing for the handle neck is provided on the stopper body.

For increased safety, it helps that the cylinder cover in a protective body rotatably supports a provided with a key slot, bohrabweisend designed cover disc. Through them, the introduction of a key in the lock is possible and the protection of the lock cylinder against violent attacks further improved The lock is covered by the protective body to the outside and therefore also tapping protected.

Advantageously, the use of detents for fixing the position of the cylinder cover. These can be formed as two mutually at the periphery of the insert diametrically opposite, molded thereon spring bars. At them engages the imported from inside the protective body, so that the positionally correct arrangement is automatically secured.

Another development is that the lower plate is elastically yielding held in the inner shield. It may have offsets and attached elastic holding parts that have lips for non-positive and positive fit in the peripheral edge of the inner shield. Appropriately, the plastic clamping parts are arranged under the inner steel lower plate so that they are kept by the existing there approaches for screwing with the threaded bushes of the outer fitting. By the bend arise on the lower plate frontally upwards -. towards the inner shield - shaped ends under which the plastic clamping parts find space. Their lips are suitably designed so that they pull the inner shield against the door leaf without an undercut would be required in the shield.

Another development provides that at least two of the steel plates have profiled holes, which are formed as merging into each other multiple Schtoßaussparungen for predetermined throat dimensions. Such distances between the handle rotation axis and the lock cylinder axis are standardized in individual countries; For example, in Germany and the Netherlands, the dimensions 55 mm, 72 mm and 92 mm are common. According to the invention, the reinforcing plate on the one hand and the lower plate in the inner plate on the other hand summarize two or three such pitches in a hole, while the outer insert plate only once with the corresponding in order to increase burglary resistance Pitch is perforated. An inner anti-drilling plate, which may be provided in the lock cylinder area on the insert plate and / or on the reinforcing plate, is displaceable to the respective gauge. It is positively and / or materially connected to the peripheral edge of the insert or reinforcing plate, that is fixed in position by lateral caulking.

Another embodiment provides a door fitting, which has on the outer shield designed as a knob outer handle, with the inside of a change pin square is screwed. It is essential here that the exchange pin by means of a mounting sleeve on the knob and is unscrewed. It is a very effective tool, especially when the mounting sleeve has a square hole for mounting on the square pin and is rotatable entrained by this. Additional tools are therefore not needed; already the components of a fitting set permit fast and very easy installation. It requires very little effort if the square with a hexagon tensile strength and is rotatably connected, which is integral with the threaded portion and a hexagon socket of the mounting sleeve engages ring-like manner. So if you put the inner handle on the square of the change pin, so the assembly handle is taken when pivoting the handle, the lever acts like a wrench.

Fig. 1

eine Längsschnittansicht eines erfindungsgemäßen Beschlags,

Fig. 1a

eine Ausschnittvergrößerung aus Fig. 1 (links oben),

Fig. 2a

eine Innen- bzw. Rückansicht einer Einlageplatte,

Fig. 2b

eine Innen- bzw. Rückansicht einer Verstärkungsplatte,

Fig. 2c

eine Vorderansicht eines Einsatzes,

Fig. 2d

eine Innen- bzw. Rückansicht eines vormontierten Außenschildes,

Fig. 3a

eine Vorderansicht eines Schutzkörpers,

Fig. 3b

eine Längsschnittansicht des Schutzkörpers von Fig. 3a,

Fig. 3c

eine Draufsicht auf eine Deckscheibe,

Fig. 3d

eine Draufsicht auf eine Profileinlage,

Fig. 3e

eine Draufsicht auf einen Schutzkörper,

Fig. 4

eine Längsschnittansicht einer anderen Ausführungsform eines erfindungsgemäßen Beschlags,

Fig. 5

eine Rückansicht eines vormontierten Außenbeschlags entsprechend der Bauform von Fig. 4,

Fig. 6a

eine Schrägansicht einer Montagehüise,

Fig. 6b

eine Schrägansicht eines Wechselstifts mit Montagehülse,

Fig. 6c

eine Teil-Seitenansicht eines Wechselstift-Endes mit Federscheibe,

Fig. 7a

eine Vorderansicht einer Unterplatte,

Fig. 7b

eine vergrößerte Teil-Längsschnittansicht eines Innenschildes mit Unterplatte entsprechend Fig. 7a,

Fig. 7c

eine Draufsicht auf ein Halteteil,

Fig. 7d

eine Längsschnittansicht des Halteteils von Fig. 7c und

Fig. 8a und 8b

Schrägansichten von Beschlagteilen vor bzw. während der Montage.

Further features, details and advantages of the invention will become apparent from the Wortletut the claims and from the following description of embodiments with reference to the drawings. Show:

Fig. 1

a longitudinal sectional view of a fitting according to the invention,

Fig. 1a

a detail enlargement from FIG. 1 (upper left),

Fig. 2a

an interior or rear view of a liner plate,

Fig. 2b

an interior or rear view of a reinforcing plate,

Fig. 2c

a front view of an insert,

Fig. 2d

an inside or rear view of a preassembled outside shield,

Fig. 3a

a front view of a protective body,

Fig. 3b

a longitudinal sectional view of the protective body of Fig. 3a,

Fig. 3c

a plan view of a cover plate,

Fig. 3d

a top view of a profile insert,

Fig. 3e

a top view of a protective body,

Fig. 4

a longitudinal sectional view of another embodiment of a fitting according to the invention,

Fig. 5

a rear view of a preassembled outer fitting according to the design of Fig. 4,

Fig. 6a

an oblique view of a Montagehüise,

Fig. 6b

an oblique view of a change pin with mounting sleeve,

Fig. 6c

a partial side view of a change pin end with spring washer,

Fig. 7a

a front view of a lower plate,

Fig. 7b

an enlarged partial longitudinal sectional view of an inner plate with lower plate corresponding to Fig. 7a,

Fig. 7c

a plan view of a holding part,

Fig. 7d

a longitudinal sectional view of the holding part of Fig. 7c and

Fig. 8a and 8b

Angled views of fittings before or during assembly.

The door fitting shown in Fig. 1 consists of a Gamitur with an outer shield 10 and an inner shield 40. The outer shield 10 has a molded peripheral edge 11 which is approximately perpendicular to the main surface of the shield and has a discharge edge 12. An insert plate 14 is overlapped by the outer shield 10 positively. A circular recess 17 at the lower end of the insertion plate 14 is used for snap connection by receiving a nose 13 of the outer shield 10 (FIG. 1 below) with a Umlauf- or curving edge 16 in the groove of the peripheral edge 11 on the outer plate.

Under the insert plate 14 is also a positive fit a reinforcing plate 72, which also has a molded peripheral edge 74 which snuggles into the groove of the peripheral edge 15 of the insert plate 14. The outlet or abutment edges 12, 32, 75 of outer shield 10, insert plate 14 and reinforcing plate 72 are aligned in one and the same plane E, which is spanned or defined by just these edges of the peripheral edges. This is also the stop plane on a schematically indicated with T door leaf on which the described door fitting is shown mounted in Fig. 1.

FIG. 1 a shows an enlarged view of a corner region of the stop body formed by the outer shield 10, the insert plate 14 and the reinforcing plate 72. It can be seen how the elements mentioned both flat and on their peripheral edges 11, 15, 74 on and nestle into each other, the alignment of the outlet edge 12 and abutment edges 32, 75 is just as clear as the attachment by means of the threaded bushing 20, the Countersunk head 21 to a corresponding countersunk hole of the insert plate 14 positively and positively engages.

The stopper body formed by the outer shield 10 and the plates 14, 72 underneath is connected to an outer handle 18 formed as a knob, the neck of which passes through receiving holes 27, 37, 77 aligned with one another. As can be seen in particular from Fig. 2a, 2b, 2d, the receiving holes 27, 37, 77 also have mutually aligned notches 28, 38, 78 for receiving ribs 26 of the neck 19. It can be seen that the knob 18 due to the symmetrical arrangement the ribs 26 on the neck 19 can be positively inserted in four different positions in the receiving holes 27, 37, 77; in practice, only two of these plug-in positions are significant, depending on whether the handle portion of the knob 18 on the outer panel 10 should point to the left or to the right. (For a round button fits any position.)

The steel sub-plates 14, 72 are penetrated by the threaded bushings 20, expediently at three points, namely near the ends of the abutment body and approximately at its center, next to the knob neck 19. Each threaded bushing 20 has a countersunk head 21 and therein Steel ball 22 as tapping protection. In the threaded bushes 20 screws 23 are screwed, which define a bottom plate 50 on the inside of the door T.

The lower plate 50 has a collar 52 which receives a bushing 47 which guides a handle neck 46 of an inner handle 45. In a square hole 48 a square 24 is held, which has a hexagon 92 and a threaded portion 94 on the outside. The latter screws with a threaded hole 25 in the knob 18. A spring washer 96 secures this screw.

The lower plate 50 is overlapped at its edge 51 by a peripheral edge 41 of an inner shield 40, the outlet edge 42 is flush with the door-side plane of the lower plate 50. At the lower end of a nose 53 engages for locking with an elastic counter-element in a recess 43 of the inner shield 40. The inner shield 40 has a round hole 44 for diametrically identical recording of the bearing bush 47 on the collar 52 of the lower plate 50th

The inner shield 40 has a lock recess 49 in the lower area for receiving a lock cylinder S indicated by dashed lines. Its axis has a spacing from the axis of rotation of the square 24 which is determined by the dimensions of a lock (not shown for clarity) in the door leaf T. According to the invention, typical pitches m ₁ , m ₂ , m ₃ can be easily taken into account by virtue of the fact that the lower plate 50 has a multiple profile hole 59 (FIG. 1, right), so that only one inner shield 40 has a lock recess matching the respective given pitch 49 is to use.

The lock cylinder S passes through the openings 49, 59 on the inside and protrudes outward into a cylinder cover 60, which has a cap 62 on a protective body 64 and a cover plate 66 with insertion slot 68 for a (schematically indicated in Fig. 1) key. The construction works in particular from FIGS. 3a to 3e. It can be seen that the protective body 64 has a collar 65 which serves for centering in an insert 84 (FIGS. 2c, 2d). The protective body 64 has a generally oval shape and is guided in the insert 84 designed as an oval ring, which has detents or spring bars 86 for fixing the position of the protective body 64 at two diametrically opposite points. An opening 61 receives from inside the cover plate 66, which is supported by a profile insert 70 inside. Knobs 71 are used for tolerance compensation and for fixing the position of the profile insert 70. The cap 62 is held by fixings 63 on the circumference of the protective body 64 in front of the collar 65.

The installation state of the cylinder cover 60 is best seen from the rear view of Fig. 2d, which at the same time shows the positive engagement of outer shield 10, insert plate 14 and reinforcing plate 72. It can be seen that the outlet edges 12, 32, 75 of the three plate elements 10, 14, 72 close together. This also applies to the insert 84, which sits on the oval recess 80 of the reinforcing plate 72.

It can be seen from FIG. 2b that the oval recess 80 of the reinforcing plate 72 has an encircling fold 82 which serves for a centering fit of the oval ring 84 that is in the correct fit. This has a circumferential rib 88, which comes to the door leaf T in the plane E to the plant.

Fig. 4 shows another embodiment of a fitting according to the invention, wherein like components are identified by the same reference numerals. It can be seen that the reinforcing plate 72 in this case has a multiple profile hole 79, a similar profile hole 29 of the outer insert plate 14 and a lock cylinder holes 39 of the outer plate 10 are aligned to receive the lock cylinder S, which inside the corresponding recesses 59, 49 interspersed. On the outside of the reinforcing plate 72 in the lock cylinder area a Anbohrschutzplatte 33 is provided, the Schließzylinderlochung 34 with the other perforations or profile holes 39, 29, 79; 59, 49 is aligned. Depending on the predetermined pitch, the Anbohrschutzplatte 33 can be moved to the appropriate height of the multi-profile hole 79 (and the profile hole 59). Crimps 35 are used to define the anti-drilling plate 33 either at the peripheral edge 74 of the reinforcing plate 72 (Fig. 5) or, if such is not present, at the peripheral edge 15 of the insert plate 14th

7a to 7d illustrate a modified embodiment of a lower plate 50 and its attachment to the inner plate 40. It can be seen that the lower plate 50 shown there near each of their end-side cam lugs 54 each have a bend 55 to receive an existing elastically resilient material holding part 56 which has a mounting hole 58 and lips, which are overlapped by the peripheral edge 41 of the inner panel 40 frontally and thereby to the (not shown here) door leaf T are used. This also ensures a secure attachment of the inner plate 40 to the lower plate 50, wherein in turn a recess 43 (see Fig. 4) may be provided as a disassembly recess.

FIGS. 6a to 6c show assembly aids whose application is shown in FIGS. 8a and 8b. It can be seen a mounting sleeve 100, which has a hexagon socket 102 and a through-square hole 104. With this it is plugged onto a square 24 of a change pin 90 so that the hexagon socket 102 surrounds the hexagon 92 of the change pin 90. This can be seen from the exploded oblique view of Fig. 8a. On the stop body 10, 14, 72, the knob 18 is inserted by the neck 19, the openings 27, 37, 77 penetrates and into the threaded hole 25 - with the interposition of a spring washer 96 - the threaded portion 94 of the change pin 90 is screwed. This process is illustrated in Fig. 8b, from which one deduces that the inner handle 45 after attaching the neck 46 on the square 24 only needs to be rotated or pivoted in the arrow direction to take the mounting sleeve 100, so that by the hexagonal positive connection 92/102 a screw connection can be made quickly and safely. The inner handle 45 ensures a long lever arm.

From the above description it is clear that the fitting according to the invention can be used with or without cylinder cover 60. It is important to nested on the outside 2 in cross section basket bow-shaped steel base plates 14, 72, which are supported with their molded Umtaufrändern 15, 74 on the door leaf level E as well as the outlet edge 12 of the outer shield 10 provided peripheral edge 11. The steel parts together the tapping protected fasteners a stable stop body, which offers high resistance to the effects of violence. This can be further reinforced in the lock area by a hardened Anbohrschutzplatte 33. As needed these and / or the inner steel plate 72 may be hardened to increase the tapping protection yet.

In particular, it is also advantageous that the oval recess 80 of the reinforcing plate 72 has a deformed edge 82 on which the collar 65 of the protective body 64 of the cylinder cover 60 is supported. This circular bevel 82 dips into the correspondingly larger oval perforations 30 of the outer insert plate 14, as a result of which different projections of the lock cylinder S, e.g. can be bridged in the range of 8.5 to 16 mm. For this purpose, it is helpful that the cylinder cover is guided in the preferably made of plastic insert 84. Its contour is suitably adapted to the shape of the fold 82 in the reinforcing plate 72. The back of the insert 84 is fixed thereto by gluing. The spring webs 86 hold the cylinder cover 60 against the lock cylinder S and thus ensure its closing function.

The decorative signs 10, 40 may be made of aluminum, brass, stainless steel or plastic and be designed as rectangular or basket bow signs. On the steel base plates 14 and 50, the signs 10 and 40 via lugs or shearing 13 or 53 at recesses 17 and 43 can be latched.

As soon as a button fitting is provided on the outside, a cranked button 18 is used, which can be mounted on the right or left side. This is a great advantage for the packaging, as a loosely packed button 18 greatly reduces the package size, which is very desirable, especially in the field of hardware stores.

For screwing the change pin 90 with the button 18, the mounting sleeve 100 serves as an intermediate tool that allows the fitting 25/94 sitting on the square 24 in the simplest way using the existing inner handle 45. After the mounting sleeve 100 is removed, the set - consisting of pre-assembled outer fitting and inner fitting - can be posted in the usual way to the door panel T.

LIST OF REFERENCE NUMBERS

e

level

m ₁ m ₂ m ₃

gauges

S

lock cylinder

T

door leaf

10

outer shield

11

circumferential edge

12

discharge edge

13

nose

14

insert plate

15

circumferential edge

16

Circumferential / cambered edge

17

recess

18

Outside handle / knob

19

Handle / button neck

20

Threaded bushing (s) / cam

21

countersunk

22

steel ball

23

Screws / threaded bolts

24

square

25

threaded hole

26

ribs

27

receiving hole

28

notch

29

profile hole

30

Ovalausnehmung

31

sinkholes

32

contact edge

33

Anbohrschutzplatte

34

Schließzylinderlochung

35

Verquetschungen

37

receiving hole

38

notch

39

Schließzylinderlochung

40

interior signage

41

circumferential edge

42

discharge edge

43

recess

44

round hole

45

inside handle

46

handle neck

47

bearing bush

48

Square hole

49

Schließzylinderlochung

50

lower plate

51

edge

52

collar

53

nose

54

(Cam) approaches

55

bend

56

holding part

57

Uppen

58

hole

59

profile hole

60

cylinder cover

61

(Storage) opening

62

cap

63

fixations

64

protective body

65

Federation

66

cover disc

68

insertion

70

profile insert

71

burl

72

reinforcing plate

74

circumferential edge

75

contact edge

76

drilling

77

receiving hole

78

notch

79

profile hole

80

oval recess

82

fold

84

Insert / oval ring

86

Notches / spring bars

88

circumferential rib

90

Half spindle

92

hexagon

94

Thread (portion)

96

spring washer

100

mounting sleeve

102

Allen

104

Square hole

Claims (20)

1. Door fitting with an outer backplate (10) comprising a peripheral rim (11) which covers at least an intermediate plane (14) as well as drill-proof threaded bushes (20) inserted into the latter, and which bears an outer handle or knob (18), with an inner backplate (40) which comprises a subplate (50) having lugs (54) for screws (23), the latter being screwable with the threaded bushes (20) under penetration of the door leaf (T), with a bearing bush (47) on the inner backplate (40) for an inner handle (45) having a square hole (48) for receiving and thus jointly rotating with a square bar (24) which is positively seated on the opposite end in the outer handle or knob (18), and with recesses (39; 49) on the outer backplate (10) and the inner backplate (40) as well as on the intermediate plane (14) for receiving a lock cylinder (S) which may be provided with a cylinder cover (60) on its outer side, wherein the peripheral rim (15) of the intermediate plane (14) protrudes inwardly transverse to the flat extension of the latter, and supports said intermediate plane (14) as well as the outer backplate (10) on the door leaf (T), wherein the intermediate plane (14) at least substantially reaches positively over a reinforcement plate (72), and wherein the reinforcement plate (72) comprises a peripheral rim (74) of similar shape to that (15) of the intermediate plane (14) and of close fit to it so that the abutting edges (32; 75) are flush.
2. Fitting according to claim 1, wherein the peripheral rim (15) spans with an inner abutting edge (32) a plane (E), and extends, beyond a circumferential edge (16), substantially at right angle with respect to that plane (E).
3. Fitting according to claim 2, wherein the circumferential edge (16) is curved with a bending radius.
4. Fitting according to one of claims 1 to 3, wherein an insert (84) is provided for additional support of the intermediate plane (14) on the door leaf (T), said insert (84) also serving for guiding the cylinder cover (60).
5. Fitting according to one of the claims 1 to 4, wherein bevels (82) of the reinforcement plate (72), which project into a recess (30) of the intermediate plane (14), enclose the cylinder cover (60), essentially centering a collar (65) provided on the latter.
6. Fitting according to claim 5, wherein the bevels (82) are bent towards the intermediate plane (14) and enclose the cylinder cover (60) at its outer edge.
7. Fitting according to one of claims 4 to 6, wherein the insert (84) is a plastic element which is undetachably fixed to the intermediate plane (14) or the reinforcement plate (72), in particular glued to it.
8. Fitting according to one of claims 4 to 7, wherein the insert (84) is formed as an oval ring having a circumferential rib (88) that is in contact with the door leaf (T).
9. Fitting according to one of claims 1 to 8, wherein the outer backplate (10) and the or each plate (14; 72) situated thereunder comprise a receiving hole (27; 77) provided with notches (28; 78) for receiving a profiled knob neck (19) matching the shape of said receiving hole (27; 77).
10. Fitting according to claim 9, wherein in particular four semicircular ribs (26) are evenly distributed along the circumference of the collar (19), and the corresponding number of matching notches (28; 78) is evenly distributed along the circumference of the receiving hole (27; 77).
11. Fitting according to one of claims 1 to 10, wherein the cylinder cover (60) pivotably receives in a protecting body (64) a drill-proof cover disk (66) provided with a key slot (68).
12. Fitting according to one of claims 5 to 11, wherein the insert (84) comprises engaging means (86) for secure mounting of the cylinder cover (60).
13. Fitting according to claim 12, wherein two spring bars formed integral with the insert (84) are provided diametrally opposite each other on the periphery of the latter to serve as engaging means (86).
14. Fitting according to one of claims 1 to 13, wherein the subplate (50) is mounted in the inner backplate (40) in an elastically flexible manner.
15. Fitting according to claim 14, wherein the subplate (50) comprises crankings (55) and elastic holding members (56) attached thereto, the latter having lips (57) for force-fit and form-fit contact in the peripheral rim (41) of the inner backplate (40).
16. Fitting according to one of claims 1 to 15, wherein at least two of the steel plates (72; 50) comprise shaped holes (79; 59) which are formed as multiple lock recesses merging into one another to accommodate given gauges (m₁, m₂, m₃).
17. Fitting according to one of claims 1 to 16, wherein the intermediate plane (14) and/or the reinforcement plate (72) are provided with an anti-drill plate (33) in the area of the lock cylinder.
18. Fitting according to claim 17, wherein the anti-drill plate (33) is connected with the peripheral rim (74) of the intermediate plane or the reinforcement plate (72) by form fit and/or material bond.
19. Door fitting according to one of claims 1 to 18, with an outer backplate (10) comprising a peripheral rim (11) which covers at least an intermediate plane (14) as well as drill-proof threaded bushes (20) inserted into the latter, and which bears an outer handle formed as a knob (18), with an inner backplate (40) which comprises a subplate (50) having lugs (54) for screws (23), the latter being screwable with the threaded bushes (20) under penetration of the door leaf (T), with a bearing bush (47) on the inner backplate (40) for an inner handle (45) having a square hole (48) for receiving and thus jointly rotating with a square-ended spindle (24) adapted to be screwed with the knob (18) provided on the opposite end, and with recesses (39; 49) on the outer backplate (10) and the inner backplate (40) as well as on the intermediate plane for receiving a lock cylinder (S) provided with a cylinder cover (60) on its outer side, wherein the spindle (90) is adapted to be screwed into and off the knob (18) by means of a mounting sleeve (100) which has a square hole (104) to receive the square-ended spindle (24) and to allow its rotation with the latter.
20. Fitting according to claim 19, wherein the square-ended spindle (24) is connected in a pull resistant and rotatable manner with a hexagon (92) which is integral with the threaded section (94) and is tightly enclosed by a hexagon socket (102) of the mounting sleeve (100) in the manner of a ring wrench.

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