SK286128B6 - Door fitting - Google Patents

Abstract

Door fitting with an outer back plate (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 back plate (40) which comprises a sub plate (50) having lugs(54) for screw (23), the latter being screwable with the threaded bushes (20) under penetration of the door leaf (T), with a bearing bush (47) on inner back plate (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 back plate (10) and the inner back plate (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 latter, and supports said intermediate plane (14) as well as the outer back plate (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. Bevels (82) of 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. The plastic insert (84) is undetachably fixed to the intermediate plane (14) or the reinforcement plate (72) which a circumferential rib (88) is in contact with the doors leaf (T). The cylinder cover (60) is fixed by engaging means (86). The sub plate (50) comprises elastic holding members (56) attached thereto, the latter having lips (57) for force-fit contact and form-fit contact in the peripheral rim (41) of the inner back plate (40). At least two of the steel plates (72, 50) comprise shaped holes (79, 59). 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 allow its rotation with the latter, e.g. a hexagon (92) which is integral with the threaded section (94).

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a door fitting comprising an outer shield provided with a peripheral skirt and which covers at least one intermediate plate and a drill-protected threaded sleeve therethrough and which carries an outer knob or handle from an internal shield provided with a lower plate. screw extensions extending through the door leaf and screwed into the threaded sleeves, the inner shield being provided with an inner handle housing, which is provided with a square hole for carrying a square which is shaped in its outer end in the outer handle openings are provided in the outer shield and in the inner shield and in the intermediate plate for receiving the lock cylinder, which may be provided with a cover on the outside.

BACKGROUND OF THE INVENTION

Such door fittings are used as so-called security fittings especially where higher strength and safety requirements are imposed.

Until now, for example, according to DE-U-8 5 13 871, a hard steel plate has been inserted under the outer sheathing of the fittings of the fitting and underneath there is also a filling plate of malleable cast iron, which naturally results in a heavy construction. In order to achieve drilling protection, hardened caps have been placed at the attachment points - see DE-8 023 871. Covering of the lock cylinder from outside with a protective plate is described in DE-U-8 716 550.

A fitting structure that is better adapted to different requirements is described in EP-B-0 502 319. In this construction, a honeycomb or ribbed structure is used as external protection in which the lock cylinder cover is elastically yielding and in which it is on the outside at least one steel plate disposed within the circumferential overlap. However, this can lead to a costly construction that is composed of many individual parts, the zinc alloy protective body having to be specially designed at different lock spacing so that in addition to production, maintaining the warehouse is more expensive.

DE 8710518 U discloses a door fitting of which an important part is a protective cover, i.e. a lock cylinder cover with a cover plate inserted. The cover is elastically attached to the base plate by means of a leaf spring. The outer decorative shield only partially contributes to stability. Underneath is also a thin lower shield, by means of which the screw with the sleeve is fixed in the correct position. This thin retaining plate, which does not represent any reinforcing plate, slides with its lower end into the peripheral flange of the outer shield without touching the door leaf. At the upper end, the bevelled peripheral edge of the lower shield extends beyond the base plate without touching it. Therefore, it is not possible to speak of any support function of the lower shield between the outer shield and the motherboard. The known door fitting is therefore vulnerable and hardly able to withstand intense violent attack.

It is an important object of the invention to economically eliminate these and other shortcomings of the prior art and to find an improved door fitting design that satisfies moderate, increased or high protection and safety requirements as required. The door fitting should be easy and quick to install. Furthermore, an effort is made to achieve a maximum simple construction which also allows easy adaptation to local conditions.

SUMMARY OF THE INVENTION

The problem is solved and the drawbacks of similar door fittings are largely eliminated by a door fitting consisting of an outer shield equipped with a peripheral skirt and covering at least one insert plate and a drill-protected threaded sleeve and carrying an outer knob or handle from the inner shield. which is provided with a bottom plate with screw extensions extending through the door leaf and screwed into threaded sleeves, and on the inner shield there is provided a housing for the inner handle, which is provided with a square hole for carrying a square which has its opposite end shape mounted in an outer handle, wherein openings are provided in the outer shield and inner shield and in the intermediate plate for receiving a lock cylinder, which may be provided on the outside with a cover according to the invention, the essence of which is When the peripheral flange of the insert plate extends perpendicularly to its surface inwardly and, like the outer gable, fits on the door leaf, the insert plate at least substantially precisely overlaps the stiffening plate and the stiffening plate is provided with a peripheral flange extending in shape and close contact with the circumferential flange of the intermediate plate and their peripheral edges are aligned.

Because the intermediate plate overlaps the reinforcing plate at least in terms of shape, it is possible to achieve an extraordinary reinforcement so that the door fitting can withstand even greater violence from the outside. Since threaded sleeves pass through both the reinforcing plate and the insert plate, and the plates are fixed by these threaded sleeves, a high-strength protective body is formed which can withstand systematic burglary attempts.

The shaped plate thus formed has a substantially flat dish shape which, due to its peripheral flange, is extremely stable and fits fully on the door leaf by this peripheral flange. The outer shield which overlaps the insert plate is of virtually identical shape and forms an aesthetically-constructed outer casing on the support body of the insert plate, which can be fastened reliably by means of through-screws.

From the point of view of the overall geometry, it is advantageous if the circumferential flange of the intermediate plate with the circumferential edge defines a plane and extends substantially perpendicular to this plane following the circumferential edge.

The peripheral edge may be rounded, not a sharp edge, but has a certain radius of curvature, so that a rounded corner is formed inside. At the same time, in addition to the high shape strength, better traceability to the inner and / or outer elements is achieved.

It is preferred that the intermediate plate and / or the reinforcing plate is made of steel, if necessary also of hardened steel, so that increased resistance to drilling or prying-off attempts is ensured.

In terms of installation, as well as durable safety and functionality, it is advantageous if the door fitting is provided with an insert for additionally supporting the insert plate on the door leaf and for guiding the lock cylinder cover.

Said internal support may be designed such that the circumferential chamfer of the reinforcing plate which protrudes into the opening of the intermediate plate encircles the lock cylinder cover, in particular centering the collar on the cover.

This circumferential bevel may be bent toward the insert plate and surround the outer periphery of the lock cylinder cover. This means that the cover of the lock insert is absolutely reliably seated on the one hand and on the other hand the profile insert, which is inserted into the door and the door fitting, is housed virtually free of play inside.

The insert is preferably of plastic and is rigidly connected, in particular glued, to the intermediate plate and / or the reinforcing plate. In this way, the fixed position is precisely secured.

The insert is preferably in the form of an oval ring which rests on the door leaf by its circumferential rib. In this way, high stability of shape and dimensional accuracy is achieved in a simple way, further enhancing the functionality of the door fitting.

A further preferred embodiment of the door fitting is that the outer shield and each plate located therebelow is provided with a receiving opening with notches on a complementary shaped neck. Also, a modular system is also used here, since this embodiment allows different handles to be mounted on one and the same basic structure, where it is still possible to decide in which direction this is done, i.e., depending on the door closing to the left or transportation.

In one embodiment of the door fitting, four hemispherical ribs are preferably evenly distributed on the periphery of the neck and an equal number of corresponding notches are equally distributed on the periphery of the receiving opening. Precise fitting enables fast and reliable assembly and eliminates overflow. In the event that the outer handle is a knob instead of a knob, a sliding bearing is placed on the neck of the knob in the housing.

To increase reliability, there is also provided a protective body in the lock cylinder housing, in which a rotary drill-proof cover disc is provided, which is provided with a key insertion slot. As a result, it is possible to insert the key into the lock and further improve the protection of the lock insert against violent interference. The lock is thus covered from the outside by the protective body and thus also protected against drilling.

The insert is preferably provided with latches for fixing the position of the lock cylinder cover.

Said latches may be designed as two resilient tongues opposed to one another on the periphery of the insert, on which the internally inserted protective body engages so that its correct position is automatically ensured.

A further possible improvement of the door fitting is that the bottom plate is elastically pliable in the inner shield.

Said elastically resilient fit can be achieved by providing the bottom plate with slots and elastic holders attached thereto, which are provided with flaps for force and shape fit in the peripheral skirt of the inner shield. The plastic holders are preferably positioned below the inner steel bottom plate in such a way that they are attached together with the screwing sleeves therewith with the threaded sleeves of the outer fittings. By bending, the ends of the bottom plate face upwards, i.e. the ends facing the inner shield, under which there is space for the plastic holders. Their flaps are preferably designed to attract the inner shield to the door leaf without requiring any undercut in the shield.

In a further embodiment of the door fitting, at least the stiffening plate and the lower plate are provided with profile openings which are configured as mutually intersecting multiple openings on the lock cylinder at predetermined spacing. These spacing between the axis of rotation of the handle and the axis of the lock cylinder are standardized in different countries, for example in Germany and the Netherlands, the spacing is 55 mm, 72 mm and 92 mm. The reinforcing plate on the one hand and the bottom plate in the inner shield on the other can

Thus, two or three such spacings can be combined in a single profile bore, while the outer intermediate plate has only a single bore at the appropriate spacing in order to increase the break-in resistance.

The insert plate and / or the reinforcement plate is preferably provided with a drill protection plate in the region of the lock cylinder which can be moved to a given spacing.

The drill protection plate is connected in a form and / or material connection to the peripheral flange of the intermediate plate or the reinforcing plate, i.e. fixed in position by a lateral clamping.

Protection is also required for a door fitting consisting of an outer shield provided with a perimeter flange and which covers at least one intermediate plate and a drill-protected threaded sleeve and carries an outer knob or handle from an internal shield fitted with a lower plate screw attachments that pass through the door leaf and are screwed into threaded bushings, and an inner shield is provided with an inner handle housing, which is provided with a quadruple drilling hole, which is oppositely disposed in the outer handle, openings are provided in the outer shield and in the inner shield and in the insert plate for receiving a lock cylinder, which may be provided on the outside with a cover according to the invention, the principle being that the replaceable bolt is screwable to the outer handle Or from it vyskrutkovateľný by the mounting sleeve that is fitted with a square hole for insertion on the square and with the square to rotate together.

This results in a particularly efficient mounting aid, especially if the mounting sleeve is provided with a square hole for sliding onto the square and is carried by the square in the direction of rotation. There is no need for additional tools, since the components of the door fitting kit allow fast and very convenient assembly.

This assembly is particularly simple if the square is coupled in tension and in the direction of rotation to a hexagon which is integrally formed with the threaded portion and is encircled by the internal hexagon of the mounting sleeve in the form of a ring. Thus, when the inner handle is fitted to the square of the replacement pin, the mounting sleeve is carried away when the inner handle is rotated, the inner handle acting as a screwdriver wrench.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention is further elucidated with reference to the accompanying drawings which show:

FIG. 1 shows a longitudinal section through a door fitting according to the invention,

FIG. 1a is an enlarged view of FIG. 1 top left,

FIG. 2a a view from the inside or from the rear of the insert plate,

FIG. 2b a view from the inside or from the rear of the reinforcing plate,

FIG. 2c a front view of the insert,

FIG. 2d view from the inside or from the rear of a pre-assembled external shield,

FIG. 3a a front view of the protective body,

FIG. 3b shows a longitudinal section through the protective body of FIG. 3a.

FIG. 3c is a plan view of the cover disc,

FIG. 3d plan view of profile insert,

FIG. 3e a plan view of the protective body,

FIG. 4 shows a longitudinal section through another embodiment of the door fitting according to the invention,

FIG. 5 is a rear view of a pre-assembled external fitting in the embodiment of FIG. 4.

FIG. 6a is an axonometric view of the mounting sleeve,

FIG. 6b is an axonometric view of the replacement pin with the mounting sleeve,

FIG. 6c a partial side view of the end of the replacement pin with a flexible washer,

FIG. 7a is a front view of the bottom plate,

FIG. 7b is an enlarged partial longitudinal section through the inner shield with the bottom plate of FIG. 7a

FIG. 7c is a plan view of the holder,

FIG. 7d shows a longitudinal section through the holder of FIG. 7c a

FIG. 8a, 8b are axonometric views of door fitting components prior to or during assembly.

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1, there is shown a door fitting consisting of a kit consisting of an outer shield 10 and an inner shield 40. On the outer shield 40, a peripheral skirt 11 is formed which extends substantially perpendicular to the main surface of the outer shield 10 and a peripheral edge 12 is formed thereon. The outer shield 10 precisely overlaps the intermediate plate 14, whose peripheral skirt 15 abuts with its rounded peripheral edge 16 into a bulge in the peripheral skirt 11 of the external shield 10. The recess 17 at the lower edge of the intermediate plate 14 serves to latch the projection 13 of the outer shield 10 and thereby an outer shield 10 with an inserted plate 14 - see FIG. 1 below.

Under the insert plate 14 is also a precisely shaped reinforcement plate 72, which is also provided with a shaped peripheral flange 74, which fits into the curvature of the peripheral edge 15 of the insert plate 14. The peripheral edges 12, 32 and 75 of the outer shield 10, insert plate 14 and stiffening plate 72 are aligned in one and the same plane E defined by these peripheral edges 12, 32 and 75 of the outer shield 10, the intermediate plate 14 and the reinforcing plate 72. It is at the same time the bearing plane on the schematically indicated door leaf T on which the door fitting of FIG. 1 mounted.

In FIG. 1a, the corner region of the protective body, which is formed by an outer shield 10, an interposed plate 14, and a reinforcing plate 72, is shown to a larger scale. It is apparent from this illustration how said elements abut on each other both on their main surfaces and their peripheral surfaces. The flanges 11, 15 and 74 are also apparent, aligning the peripheral edges 12, 32 and 75 and fastening by means of a threaded sleeve 20 whose countersunk head 21 fits in the corresponding countersink recess in the intermediate plate.

14th

The protective body, which is formed by the outer shield 10 and the intermediate plate 14 and the reinforcing plate 72 located therein, is connected to the outer handle 18, which is designed as a button and whose neck 19 passes through the mating receiving holes 27, 37 and 77. is particularly evident from FIG. 2a, 2b and 2d, the receiving apertures 27, 37 and 77 are also provided with mating notches 28, 38 and 78 for engaging the ribs 26 of the neck 19. It is evident that the handle 18 can be introduced into the receiving positions by the symmetrical location of the ribs 26 on the neck 19. of holes 27, 37 and 77 in exactly four shapes. In practice, however, only two of these positions are relevant, depending on whether the handle 18 on the outer shield 10 is to be directed to the left or to the right. Of course, any of these positions are suitable for the round handle 18.

Threaded bushings 20 of steel pass through the intermediate plate 14 and the stiffening plate 72, preferably at three locations, i.e. near the ends of the protective body and approximately in the middle thereof near the handle 18 or its neck 19. Each threaded bush 20 is provided with countersunk head 21 av. steel ball 22, which forms a drilling protection. Screws 23 that tighten the bottom plate 50 on the inside of the door leaf T can be screwed into the threaded sleeves 20.

The lower plate 50 is provided with a collar 52 in which a housing 47 is provided which guides the neck 46 of the inner handle 45. The square hole 48 accommodates a square 24 which is provided on the outside with a hexagon 26 and a threaded portion 94. The latter is screwed into The screw connection described above is secured by a spring washer 96.

The lower plate 50 is overlapped at its peripheral edge 51 by the peripheral skirt 41 of the inner shield 40, the peripheral edge 42 of which joins the plane of the lower plate 50 towards the door leaf T. The protrusion 53 at the lower end of the lower plate 50 fits into the recess 43 of the inner plate. This inner shield 40 is provided with an annular opening 44 for receiving the housing 47 on the collar 52 of the bottom plate 50.

The inner shield 40 is provided at its bottom with a hole 49 for receiving the dotted indicated lock cylinder S. The axis of the lock cylinder S has a distance from the quadruple axis of rotation 24 given by the dimensions of the lock embedded in the door leaf T, not shown. Typically, according to the invention, the typical spacing ml, m2, m3 can be taken into account in that the bottom plate 50 is provided with a multiple profile opening 59 - in FIG. 1 so that only the inner shield 40 with the hole 49 for the lock cylinder S at the correct spacing is required.

The lock insert S extends through the apertures 49, 59 on the inside of the door leaf T and extends outwardly into a housing 60 which is provided with a cap 62 above the protective body 64 and a cover disc 66 with an insertion slot 68 for the key shown schematically in FIG. The construction is particularly evident from FIG. 3a to 3e. Obviously, the protective body 64 is provided with a collar 65 which serves to center in the insert 84 - FIG. 2c, 2d. The protective body 64 is generally oval in shape and is guided in an insert 84 formed as an oval ring, which is provided with latches 86 formed as resilient tongues at two opposite points to fix the position of the protective body 64. A cover disc is housed in the opening 61 66, which is supported inwardly by the profile insert 70. The protrusions 71 serve to compensate for tolerances and to fix the position of the profile insert 70. The cover cap 62 is attached to the periphery of the protective body 64 in front of the collar 65 by means of clips 63.

The built-in condition of the cover 60 on the profile insert 70 is best evident from the rear view of FIG. 2d, from which the shape of the outer shield 10, the insert plate 14 and the stiffening plate 72 is also apparent. It is apparent that the peripheral edges 12, 32, 75 of the outer shield 10, the insert plate 14 and the stiffening plate 72 are closely connected to each other. The same applies to the insert 84 which is seated on the oval recess 80 of the reinforcement plate 72.

FIG. 2b, the oval recess 80 of the stiffening plate 72 is provided with a circumferential bevel 82 which serves to precisely position and center the oval ring 84. The oval ring 84 is provided with a circumferential rib 88 which engages the door leaf T in plane E.

In FIG. 4 shows another embodiment of a door fitting according to the invention. Like parts are designated herein by like reference numerals. It is evident that the reinforcing plate 72 is in this case provided with a multiple profile opening 79, to which the profile opening 29 of the same shape in the outer insert plate 14 and the lock insert opening S in the outer shield 10 are aligned. In the outer side, below the reinforcement plate 72 in the region of the lock cylinder S is a drilling protection plate 33 whose opening 34 on the lock cylinder S aligns with the other holes or profile holes 39. 29, 79; 59, 49. Depending on the spacing, the drill protection plate 33 can be moved to a suitable height of the multiple profile hole 79 and the profile hole 59. The serrations 35 serve to attach the drill protection plate 33 to either the peripheral skirt 74 of the reinforcement plate 72 of FIG. 5 or, if there is no such reinforcement plate, on the peripheral skirt 15 of the intermediate plate 14.

In FIG. 7a to 7d show further variations of the bottom plate 50 and its attachment to the inner shield 40. It is evident that the bottom plate 50 shown here is provided with slots 55 near its end extensions 54 to accommodate a holder 56 of elastically yielding material, which is provided with a fastening opening 58 and flaps which are frontally covered by the peripheral flange 41 of the inner shield 40 and thereby attracted to the door leaf T not shown here. This also ensures a reliable fastening of the inner shield 40 on the bottom plate 50, 43 - see fig. 4, which serves as a mounting recess.

In FIG. Figures 6a to 6c show assembly aids the use of which is shown in Figs. 8a and 8b. Obviously, there is an assembly sleeve 100 that is provided with an inner hexagon 102 and a through hole 104 through which the mounting sleeve 100 can be threaded onto the square 24 of the pivot pin 90 such that the inner hexagon 102 fits the hexagon 92 of the pivot pin 90. FIG. 8a. An outer handle 18 is fitted to the outer shield 10, the intermediate plate 14 and the reinforcement plate 72, the neck 19 passing through the holes 27, 37 and 77 and the threaded section 94 of the pivot pin 90 is screwed into the threaded hole 25 via the intermediate spring washer. shown in FIG. 8b, from which it is evident that it is sufficient to rotate or rotate the inner handle 45 in the direction of the arrow, thereby driving the mounting sleeve 100 so that the hexagon 92 and the inner hexagon 102 engage quickly and reliably. The inner handle 45 forms a sufficiently long lever.

It is clear from the foregoing that the fitting according to the invention can be used with or without a cover 60 on the lock cylinder S. It is essential that a concealed plate 14 and a reinforcing plate 72, both of steel and a dish-shaped profile, are concealed on the outside. with their preformed peripheral flanges 15, 74 they rest on the plane E of the door leaf T as well as the peripheral edge 12 of the peripheral flange 11 formed on the outer shield 10. The described steel parts, including anti-drilling fasteners, form a stable frontal body seeking for violent intrusion. This resistance can be further strengthened by the hardened drill protection plate 33, which is located in the region of the lock cylinder S. If necessary, the protective plate 33 and / or the reinforcement plate 72 can be hardened to further enhance the drill protection.

It is also particularly advantageous that the oval recess 80 of the reinforcing plate 72 is provided with a circumferential chamfer 82 on which the collar 65 of the protective body 64 of the cover 60 of the lock cylinder S rests. This circumferential chamfer 82 extends into the corresponding oval opening 30 of the outer intermediate plate 14 which can be overlapped by different protrusions of the lock cylinder S, for example in the range 8.5 to 16 mm. This is aided by the fact that the cover 60 of the lock insert S is guided in an insert 84 which is preferably made of plastic and whose contours are preferably adapted to the shape of the circumferential bevel 82 in the reinforcing plate 72. On the rear, the insert 84 is secured by gluing. The resilient tongues of the latches 86 press the cover 60 against the lock cylinder S to ensure its locking function.

The decorative shields 10 and 40 may be made of aluminum, brass, stainless steel or plastic and may be rectangular or oval. On the intermediate plate 14 and / or the lower plate 50, which are made of steel, the shields 10 and 40 can be attached by snapping the projections 13 and 53 into the recesses 17 and 43 respectively.

If the door fitting is not provided with a knob-shaped outer handle 18 on the outside, a cranked outer handle 18, which can be mounted on the left or right in place, is used. This is a great advantage in terms of packaging, since the free-standing outer handle 18 greatly reduces the dimensions of the package, which is very advantageous from the point of view of specialized shops.

A screw-in sleeve 100 is provided for screwing the interchangeable bolt 90 with the outer handle 18, which, after being used as an auxiliary tool on a square 24, makes it possible to screw the threaded section 94 of the interchangeable bolt 90 into the threaded hole 25.

SK 286128 Β6 outer handle 18. After the mounting sleeve 100 has been removed, the kit, which consists of the pre-assembled outer fittings and the inner fittings, can be fixed in the usual way to the door leaf T.

All features and advantages of the claims, the description and the drawings, including construction details and spatial locations, may be essential and important to the invention, both as such and in various combinations.

Claims (20)

PATENT CLAIMS A door fitting comprising an outer shield (10) having a peripheral skirt (11) and covering at least one intermediate plate (14) and a drill-protected threaded sleeve (20) thereto and carrying an outer knob or handle (18). ), from an inner shield (40) which is provided with a bottom plate (50) with extensions (54) for screws (23) which pass through the door leaf (T) and are screwed into the threaded sleeves (20), on the inner shield (40), there is provided a bearing housing (47) for the inner handle (45), which is provided with a square hole (48) for carrying the doubles (24), which has its opposite end disposed in the outer handle (18), (10) and openings (39; 49) are provided in the inner shield (40) and in the intermediate plate (14) for receiving the lock cylinder (S), which can be provided on the outside with a cover (60), characterized in that . in that the circumferential flange (15) of the intermediate plate (14) extends perpendicularly to its surface inwards and, like the outer shield (10), rests on the door leaf (T), the intermediate plate (14) at least substantially overlapping the reinforcing plate (72) and the reinforcing plate (72) is provided with a peripheral skirt (74) that is shaped in a similar fashion and in close contact with the peripheral skirt (15) of the intermediate plate (14) and their peripheral edges (32); 75) fit together. Door fitting according to claim 1, characterized in that the peripheral flange (15) of the intermediate plate (14) with the peripheral edge (32) defines a plane (E) and extends substantially perpendicular to this plane (30) following the peripheral edge (16). E). Door fitting according to claim 2, characterized in that the peripheral edge (16) is rounded. Door fitting according to one of Claims 1 to 3, characterized in that it is provided with an insert (84) for additionally supporting the intermediate plate (14) on the door leaf (T) and for guiding the cover (60) of the lock cylinder (S). Door fitting according to claim 1, characterized in that the reinforcing plate (72) is provided with a circumferential chamfer (82) extending into the opening (30) of the intermediate plate (14), enclosing the cover (60) of the lock cylinder (S), in particular, it centers the collar (65) on this cover (60). Door fitting according to claim 5, characterized in that the circumferential bevel (82) is angled towards the intermediate plate (14) and surrounds the outer periphery of the cover (60) of the lock cylinder (S). Door fitting according to one of claims 4 to 6, characterized in that the insert (84) is made of plastic and is rigidly connected, in particular glued, to the intermediate plate (14) and / or the reinforcing plate (72). Door fitting according to one of Claims 4 to 7, characterized in that the insert (84) is designed as an oval ring, which by its peripheral rib (88) bears against the door leaf (T). Door fitting according to any one of claims 1 to 8, characterized in that the outer shield (10) and each plate (14; 72) located below it is provided with a receiving opening (27; 77) with notches (28; 78) for complementary shaped neck (19). Door fitting according to claim 9, characterized in that the neck (19) is provided on its periphery with four hemispherical ribs (26) and an equal number of corresponding notches (28; 78) are distributed uniformly over the periphery of the receiving opening (27; 77). . Door fitting according to one of Claims 4 to 6, characterized in that a protective body (64) is arranged in the cover (60) of the lock cylinder (S), in which a drill-resistant cover disc (66) is rotatably mounted. it is provided with a keying slot (68). Door fitting according to any one of claims 4 to 10, characterized in that the insert (84) is provided with latches (86) for fixing the position of the cover (60) of the lock insert (S). Door fitting according to claim 12, characterized in that the latches (86) are designed as two resilient tongues opposite one another on the circumference of the insert (84). Door fitting according to one of Claims 1 to 13, characterized in that the lower plate (50) is elastically resilient in the inner shield (40). Door fitting according to claim 14, characterized in that the bottom plate (50) is provided with slots (55) and elastic holders (56) attached thereto, which are provided with flaps (57) for abutting in shape and shape. a peripheral skirt (41) of the inner shield (40). Door fitting according to one of claims 1 to 15, characterized in that at least the reinforcing plate (72) and the lower plate (50) are provided with profile openings (79; 59) which are designed as mutually extending multiple openings for lock cylinder (S) at preset intervals (ml, m2, m3). Door fitting according to any one of claims 1 to 16, characterized in that the intermediate plate (14) and / or the reinforcing plate (72) is provided with a drilling protection plate (33) in the region of the lock cylinder (S). Door fitting according to claim 17, characterized in that the drill protection plate (33) is positively and / or materially connected to the peripheral flange (74) of the intermediate plate (14) or the reinforcing plate (72). Door fitting according to any one of claims 1 to 18, comprising an outer shield (10) which is provided with a peripheral skirt (11) and which overlaps at least one intermediate plate (14) and a drill-protected threaded sleeve (20) adjoining it. and carrying an outer knob or handle (18) from an inner shield (40) provided with a bottom plate (50) with extensions (54) for screws (23) that pass through the door leaf (T) and are screwed into threaded bushings (20), wherein an inner housing (47) is formed on the inner shield (47) for the inner handle (45), which is provided with a square hole (48) for carrying the doubles (24), which has its opposite end shaped in the outer handle (18), wherein openings (39; 49) are provided in the outer shield (10) and inner shield (40) and in the intermediate plate (14) for receiving the lock cylinder (S), which may be provided on the outer side Cover (60), characterized in that the replacement pin (90) can be screwed to or removed from the outer handle (18) by means of a mounting sleeve (100) provided with a square hole (104) for sliding on a square (24) and is connected to this square (24) for rotation. Door fitting according to claim 19, characterized in that the square (24) is connected in tension and in the direction of rotation to a hexagon (92) which is integrally formed with the threaded portion (94) and is encircled by an internal hexagon (102) a mounting sleeve (100).