EP3066282B1 - Locking device for a door or flap - Google Patents

Description

The invention relates to a locking device for a door or flap, in particular a vehicle, preferably a motor vehicle, with a cladding element, with a cylinder lock having a cylinder sleeve and a cylinder core rotatably mounted in the cylinder sleeve, with a bearing bracket which can be fastened or fastened to the door or flap , which has a receptacle for the cylinder lock, and with a screw that establishes a mechanical connection between the cylinder liner and the trim element for the door or flap.

Locking devices of the type mentioned are from the prior art, for example from the DE 10 2004 012 456 A1 known. In the course of the further development of motor vehicles, measures are also being developed to increase the security against theft or theft of vehicles. In addition to electronic devices such as immobilizers, mechanical devices are also used. Locking devices are customary as mechanical safety devices, which comprise a cylinder lock arranged in a door or a flap of the vehicle. As essential components, the cylinder lock has a, in particular, stationary cylinder sleeve, which is fastened to the bearing bracket and in which a cylinder core is rotatably mounted. As a result of the rotation of the cylinder core, which can only be triggered with a corresponding key inserted into the core, the rotary movement is transmitted to a locking mechanism of the locking device, which ultimately causes the door or flap to be opened or closed. The cylinder lock is usually held in a bracket that is fastened inside the door or flap or on the inside thereof.

From the DE 10 2004 012 456 A1 it is also known to provide a screw that mechanically connects the cylinder liner to a panel of the door or flap. For this purpose, the screw is partially inserted from the outside through the cladding plate and through the bearing bracket in a radial recess in the cylinder liner. The tip of the screw, which lies in the radial recess, ensures that the cylinder liner gets caught on the cladding plate when it is forcibly destroyed and cannot be pulled out.

In addition to the actual fastening of the cylinder liner in the bearing bracket, the screw is thus provided which only fulfills its function in the event of a violent break-open. Due to the large number of individual parts, a comparatively large installation space is required and correspondingly high manufacturing and assembly costs also arise.

From document DE 101 46 026 C1 a locking device for a motor vehicle door is also known, with a cylinder lock and with a bearing bracket fastened to the motor vehicle door, which has a receptacle for the cylinder lock. Furthermore, a screw is provided, which is supplied for assembly through an opening in a cladding element of the locking device. Disclosure notice WO 2013/013 751 A1 describes a door handle arrangement for a vehicle, with a bearing bracket fastened in a vehicle door and a locking cylinder that can be inserted into the bearing bracket.

The invention is therefore based on the object of creating a locking device which is designed more cost-effectively and saves installation space without sacrificing security against being broken open.

The object on which the invention is based is achieved by a locking device having the features of claim 1. This has the advantage that only a single screw is provided both for fastening the cylinder bushing in the bearing bracket and for securing it to the cladding element, which screw performs both the function of the fastening and the function of the fuse. As a result, component costs can be saved, assembly can be shortened and simplified in terms of time, and installation space can be saved, the security of the locking device against violent tampering at least remaining the same. The cladding element is preferably a cladding panel, particularly preferably an inner panel of the door or flap. The cladding element is part of the locking device.

The locking device according to the invention is characterized in that a bracket element, which at least partially radially encompasses the cylinder sleeve, is provided, which is arranged displaceably on the bearing bracket and which has at least one engagement means for engaging in a recess in the cylinder sleeve, and in that the screw with a threaded bore of the Bracket element cooperates for its displacement, wherein the cylinder sleeve has a radial recess which forms a pressure surface, and wherein the screw at its end facing the cylinder sleeve has a pressure tip which into the radial recess is introduced and cooperates with the pressure surface for axial and radial support of the screw. The locking device thus has only one screw for fastening and securing the cylinder lock or the cylinder liner. The screw is passed through a thread of the bracket element or through the threaded hole. By rotating the screw, it can be axially displaced with respect to the bracket element. If the screw is screwed into the threaded bore so far that its pressure tip hits the radial depression or the pressure surface of the radial depression, axial force is generated which forces the bracket element with the section having the threaded bore away from the cylinder sleeve. As a result, the bracket element can be displaced in a spindle-like manner by screwing in the screw and brought into engagement with the recess of the cylinder sleeve with the at least one engagement means in order to fasten it in the bearing bracket.

It is further provided according to the invention that the pressure surface of the radial recess is conical, the pressure tip of the screw being complementary to the pressure surface. This ensures that a flat support of the pressure tip in the radial recess or on the pressure surface is ensured for advantageous power transmission. Due to the conical design, an automatic centering of the screw or its pressure tip is also achieved, wherein in the screwed-in or introduced state into the radial recess, forces can also be transmitted radially with respect to the screw onto the bracket element and vice versa via the pressure tip of the screw.

It is further provided according to the invention that the cladding element has an opening through which the screw with its end opposite the pressure tip is passed. This ensures that the cylinder liner is hooked onto the cladding element when the locking device is broken open in a simple manner. The diameter of the opening preferably corresponds almost to the diameter of a threaded shaft of the screw, in order to ensure secure hooking.

According to the invention it is also provided that the screw has a screw head whose diameter is larger than the diameter of the opening of the cladding element, the screw head being on the side of the cladding element opposite the bracket element, so that the screw head advantageously provides additional positive locking against unauthorized use Breaking the locking device is guaranteed.

Since the screw simultaneously establishes the mechanical connection to the trim element, the screw fulfills both of the above-mentioned functions. For fastening, the screw is supported on the cylinder liner in order to displace the bracket element and is at the same time in mechanical connection with the cladding element in order to ensure the hooking described when the locking device is broken open violently. The screw is therefore the only screw for fastening and securing the locking device or the cylinder lock.

According to a preferred development of the invention, it is provided that the bracket element is at least substantially ring-shaped and completely surrounds the cylinder sleeve radially. The bracket element thus completely surrounds the cylinder liner and has due to the continuous ring shape has a particularly high stability against mechanical breakage. This further increases security against unauthorized opening of the door or flap.

Furthermore, it is preferably provided that the bracket element on the side opposite the threaded bore has a crossbar as an engagement means. The crossbar connects two legs of the bracket element arranged parallel and spaced from one another at their free ends, thereby forming the closed ring shape and ensuring the high level of security against break-ins. Because the crossbar itself forms the engagement means, no further precautions are necessary on the bracket element, such as engagement projections projecting radially inwards, so that the bracket element is particularly inexpensive and easy to manufacture. However, it can of course also be provided according to a further embodiment that one or more radially inwards or in the direction of the Projections are provided, which engage in corresponding receptacles.

It is preferably provided that the cylinder liner on its side opposite the radial recess has the recess for receiving the engagement means or engagement means. So that the recess of the cylinder liner is assigned to the engagement means of the bracket element, which is on the opposite side of the threaded bore. On the one hand, this prevents incorrect assembly and, on the other hand, this optimally enables the engagement means or engagement means to be introduced into the recess by supporting the screw on the pressure surface of the cylinder liner.

The recess is preferably designed as a receiving groove in the cylinder liner. As a result, a particularly wide engagement means can engage in the recess, which increases the positive locking and increases security against breaking open. The receiving groove is expediently designed to receive the transverse web, the receiving groove preferably extending only over a limited circumferential angle of the cylinder liner. The legs, which lead from the crosspiece to the section of the bracket element which has the threaded bore, are expediently so far apart that the cylinder liner can be passed between them. By subsequently moving the striker, the striker engages with the recess and locks the cylinder liner in a positive manner in the axial direction. It is particularly preferably provided that the cross bar and / or the receiving groove each have at least one insertion chamfer, which ensures that the bracket element is securely inserted into the recess in the cylinder liner and that the cylinder liner is automatically centered.

According to an advantageous development of the invention, it is provided that the bearing bracket has a sliding guide for at least substantially only radially displaceable arrangement of the bracket element with respect to the cylinder liner. The essentially only radial displaceability of the bracket element ensures that the bracket element or the cylinder sleeve is held on the bearing bracket axially with only a slight, preferably with no play or without play. The axial support of the bracket element is thus carried out on the bearing bracket itself.

According to an advantageous development of the invention, it is provided that the bracket element has a first section encompassing the cylinder sleeve and a second section having the threaded bore, the two sections being at least substantially perpendicular to one another. This ensures that, in particular when the bracket element is designed as a bent sheet metal part, the section encompassing the cylinder liner can be made relatively flat, in particular flatter than the diameter of the screw, and that the threaded bore can be introduced in a simple manner into the section oriented perpendicularly thereto . As a result, the already mentioned design of the bracket element as a bent sheet metal part can be implemented in a simple and inexpensive manner.

Figur 1

eine Schließeinrichtung einer Tür von einem Kraftfahrzeug,

Figur 2

eine vergrößerte Detailansicht der Schließeinrichtung,

Figur 3

eine perspektivische Darstellung eines Zylinderschlosses sowie eines Bügelelementes der Schließeinrichtung,

Figur 4

eine perspektivische Darstellung des Bügelelements und

Figur 5

eine Draufsicht auf die Anordnung von Figur 3 zur Veranschaulichung der Funktionsweise.

The invention is to be explained in more detail below using an exemplary embodiment. To show:

Figure 1

a locking device for a door of a motor vehicle,

Figure 2

an enlarged detail view of the locking device,

Figure 3

a perspective view of a cylinder lock and a shackle element of the locking device,

Figure 4

a perspective view of the bracket element and

Figure 5

a plan view of the arrangement of Figure 3 to illustrate how it works.

Figure 1 shows a sectional door 1 of a motor vehicle, not shown, which has a locking device 2, in a sectional view. On the door 1, a bracket 3 of the locking device 2 is fixed, which also carries an actuatable door handle. The bearing bracket 3 also has a receptacle 5 in which a cylinder lock 6 is arranged.

The cylinder lock 6 has a cylinder sleeve 7 and a cylinder core 8 which is rotatably mounted in the cylinder sleeve. The rotation of the cylinder core 8 can only be triggered with a corresponding key inserted into the core. The basic design of a cylinder lock is known from the prior art and will therefore not be explained in more detail here. The cylinder liner 7 is inserted axially into the receptacle 5 and held at least radially by the receptacle 5.

The cylinder lock 6 is also assigned a shackle element 9, which serves to axially fix the cylinder bushing 7 and thus the cylinder lock 6 in the receptacle 5 or on the bearing bracket 3. Furthermore, the locking device 2 has a screw 10 which interacts with the bracket element 9, as described below.

Figure 2 shows an enlarged detail view of the locking device 2 in a further sectional view. The screw has a screw head 11 at one end, to which a threaded shaft 12 connects, which ends at the other end in a pressure tip 13. The threaded shaft 12 has an external thread 14 which interacts with an internal thread 15 of a threaded bore 16 of the bracket element 9. The pressure tip 13 has a conical contour and is designed to cooperate with a pressure surface 17, which is formed by a radial recess 18 in the cylinder liner 7. The pressure surface 17 has a taper complementary to the pressure tip 13, so that the pressure tip 13 lies flat against the pressure surface 17, so that both axially and radially - with respect to the screw 10 - forces can be transmitted.

Figure 3 shows the cylinder lock 6 together with the shackle element 9 and the screw 10 in a perspective view. It can be seen here that the bracket element 9 has a has a first section 19, which comprises the threaded bore 16 for the screw 10, and a second section 20, which radially encompasses the cylinder sleeve 7 of the cylinder lock 6.

Figure 4 shows the bracket element 9 together with the screw 10 in a further perspective view, from which it can be seen that the bracket element 9 is essentially ring-shaped with a rectangular contour. Due to this ring shape, the bracket element 9, starting from the section 19 in the section 20, has two legs 20 ′ and 20 ″ which are arranged parallel to one another and spaced from one another and which are connected to one another at their free ends by a transverse web 20 ″ ″ The first section 19 is oriented essentially perpendicular to the second section 20, the threaded bore 16, through which the screw 10 is guided with its threaded shaft 12, located at the level of the transverse web 20 '. ″, so that the axis of rotation of the screw 10 lies in the plane of the section 20, the pressure tip 13 of the screw 10 being oriented towards the cross section 20 ″ ″. The two legs 20 ′ and 20 ″ and the transverse web 20 ″ 'and section 19 are an opening of the bracket element each so far apart from each other that the cylinder liner 7, as by a arrow 21 in Figure 3 indicated, can be pushed through the opening of the bracket element 9 or into it.

The cylinder liner 7 has on its side opposite the radial recess 18 a recess 22 in the form of a receiving groove 23, as best shown in FIG Figure 1 evident. The receiving groove 23 has a height or clear width which essentially corresponds to the height of the transverse web 20 ''', so that it can preferably be inserted into the receiving groove 23 without play, as in FIG Figures 1 and 3rd shown. The receiving groove 23 preferably extends only over the rear side or the side of the cylinder sleeve 7 opposite the radial recess 18.

Based on Figure 5 The fastening of the cylinder lock 6 to the bearing bracket 3 by means of the bracket element 9 will now be explained. Figure 5 shows a top view of the assembly of cylinder lock 6 and shackle element 9 and screw 10 according to Figure 3 in the fully assembled state. First, the bracket element 9 is positioned in the bracket 3. For this purpose, the bearing bracket 3 has a sliding guide 24, by means of which the bracket element 9 is mounted so as to be radially displaceable with respect to the cylinder sleeve 7 in the plane of the section 20. Then the cylinder lock 6 is inserted into the receptacle 5 and through the opening of the preassembled shackle element 9, according to arrow 21. Then the Screw 10 is actuated in such a way that it is screwed in in the direction of the crosspiece 20 ″. As soon as the pressure tip 13 comes into contact with the rear surface 17, an axial force is exerted by which the bracket element 9 in the direction of the screw head 11 on the threaded shaft 12 As a result, the crosspiece 20 ″ ″ is pushed into the receiving groove 23 of the cylinder liner 7. The crosspiece 20 ″ ″ is preferably pulled into the receiving groove 23 as far as it will go, so that it essentially completely fills the receiving groove 23 a positive connection between the bracket element 9 and the cylinder sleeve 7 in the axial direction - as seen in relation to the cylinder sleeve 7 - which reliably prevents the cylinder lock 6 from simply being pulled out of the receptacle 5 of the bearing bracket 3. This locks the cylinder lock 6 in a simple manner the bracket 3 or the door 1 attached.

How from Figures 1 and 2 can be seen, it is further provided that the threaded shaft 12 of the screw 10 is passed through an opening 25 of a trim element 26 of the door 1, which is in particular formed by an inner panel, so that the screw head 11 lies outside the trim element 26, while the rest of the locking device 2 is inside the Cladding element 26 is arranged. The screw head 11 has an outer diameter that is larger than that of the opening 25. During assembly, the screw 10 is therefore fed from the outside through the opening 25 of the trim element 26 to the threaded bore 16 of the bracket element 9. The locking device 2 is designed in such a way that the screw head 11 also lies outside the cladding element 26 when the screw 10 has been screwed into the threaded bore 16 at most. As a result, in addition to the fastening of the cylinder lock 6 on the bearing bracket 3, a further safeguard against unauthorized opening of the door is ensured. If the cylinder lock 6 were pulled out of the receptacle 5 with the application of force, the radial force transmission to the screw 10 through the conical pressure surface 17 would result in the cylinder sleeve 7 or the cylinder lock 6 contacting the lining element as a result of the mechanical connection to the lining element 26 26 hooked. As a result, even when the fastening of the cylinder lock 6 has been broken open, a simple pulling out of the cylinder lock 6 from the bearing bracket 3 is prevented.

The screw 10 thus fulfills two functions simultaneously, on the one hand securing the cylinder lock 6 and, on the other hand, securing the cylinder lock 6 when the locking device 2 is broken open.

While the present exemplary embodiment relates to a vehicle door, it can be provided according to another exemplary embodiment that the described locking device 2 is also arranged on a vehicle flap, such as a trunk lid or the like.

Claims (7)

1. Closing device (2) for a door (1) or flap, in particular of a vehicle, with a covering element, with a cylinder lock (6) which has a cylinder liner (7) and a cylinder core (8) rotatably mounted in the cylinder liner (7), with a bearing bracket (3) which can be fastened to the door (1) or flap and which has a mounting (5) for the cylinder lock (6), and with a screw (10) which establishes a mechanical connection of the cylinder liner (7) with the covering element (26) of the closing device (2) for the door (1) or flap, wherein a bracket element (9) that radially encompasses the cylinder liner at least in areas is provided and is arranged to be displaceably mounted on the bearing bracket (3) and has at least one engagement means (20"') for engaging in a recess (22) of the cylinder liner (7), wherein the screw (10) interacts with a threaded hole of the bracket element (9) in order to displace it, wherein the cylinder liner (7) has a radial indentation (18) that forms a pressure surface (17), wherein the screw (10) has, at its end facing the cylinder liner (7), a pressure tip (13) which, introduced into the radial indentation (18), interacts with the pressure surface (17) for the axial and radial support of the screw (10), characterized in that the pressure surface (17) of the radial indentation (18) is formed to be conical, wherein the pressure tip (13) of the screw (10) is formed to be complementary to the pressure surface (17), and in that the covering element (26) has an opening (25) through which the screw (10) is passed, wherein the screw (10) has a screw head (11) whose diameter is greater than the diameter of the opening (25) of the covering element (26).
2. Closing device according to Claim 1, characterized in that the bracket element (9) is formed to be at least substantially annular and radially encompasses the cylinder liner (7) completely.
3. Closing device according to one of the preceding claims, characterized in that the bracket element (9) has a transverse bar (20"') as engagement means on the side opposite the threaded hole (16).
4. Closing device according to one of the preceding claims, characterized in that the cylinder liner (7) has the recess (22) on its side opposite the radial indentation (18).
5. Closing device according to one of the preceding claims, characterized in that the recess (22) is formed as a mounting groove (23) in the cylinder liner (7).
6. Closing device according to one of the preceding claims, characterized in that the bracket element (9) has a first section (20) encompassing the cylinder liner (7) and a second section (19) having the threaded hole (16), wherein the two sections (20, 19) are aligned at least substantially perpendicularly to one another.
7. Closing device according to one of the preceding claims, characterized in that the bearing bracket (3) has a sliding guide (24) for the arrangement of the bracket element (9) which is displaceable at least substantially only radially relative to the cylinder liner (7).

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