CLOSING SYSTEM FOR A DOOR OR HATCH OF A MOTOR VEHICLE, DOOR OR HATCH OF A MOTOR VEHICLE, MOTOR VEHICLE

Abstract

A closing system for a door or hatch of a motor vehicle includes: a bearing piece and a cylinder lock situated on the bearing piece, the cylinder lock having a cylinder bushing and a cylinder core; and a locking clamp which is held on the bearing piece, engages the cylinder bushing from behind and has a holding lug which is oriented parallel to the cylinder bushing, a fastening screw passing through the holding lug, and the tip of the screw lying in a receiving depression in the cylinder bushing in order to preload the locking clamp against the cylinder bushing. A protective element rests on an outer side of the bearing piece and has at least one retaining lug which is oriented parallel to the cylinder bushing, and the fastening screw also passes through the retaining lug.

Claims

1-13. (canceled)

14. A closing system for a door or hatch of a motor vehicle, the closing system comprising: a bearing piece; a cylinder lock disposed on said bearing piece, said cylinder lock having a cylinder bushing and a cylinder core; a locking clamp held on said bearing piece and engaging said cylinder bushing from behind, said locking clamp having a holding lug oriented parallel to said cylinder bushing; a protective element resting on an outer side of said bearing piece and having at least one retaining lug which is oriented parallel to said cylinder bushing; and a fastening screw passing through said holding lug and through said at least one retaining lug, said fastening screw having a tip lying in a receiving depression formed in said cylinder bushing for preloading said locking clamp against said cylinder bushing.

15. The closing system according to claim 14, wherein said locking clamp and said protective element are arranged at least substantially parallel to one another.

16. The closing system according to claim 14, wherein the locking clamp is positively held on the bearing piece, axially to the cylinder bushing.

17. The closing system according to claim 14, wherein said bearing piece is produced from plastics and said locking clamp and said protective element are produced from metal.

18. The closing system according to claim 14, wherein said protective element is a protective plate.

19. The closing system according to claim 14, wherein said holding lug is formed with a screw opening having an internal thread, and wherein said fastening screw is screwed into said internal thread.

20. The closing system according to claim 14, wherein said screw tip and said receiving depression are configured so as to correspond to one another.

21. The closing system according to claim 14, wherein said protective element has an annular configuration and surrounds said cylinder lock.

22. The closing system according to claim 14, wherein said protective element is an external cladding of the closing system.

23. The closing system according to claim 14, wherein said cylinder bushing has a cylinder bushing head which protrudes from said bearing piece and which is configured to be larger than an opening of said closing element so that said cylinder bushing head is axially supported on said protective element.

24. A door or hatch for a vehicle, comprising a closing system according to claim 14.

25. The door or hatch according to claim 24, further comprising an external cladding forming the protective element and having the retaining lug.

26. A motor vehicle, comprising at least one door or hatch with a closing system according to clam 14.

Description

[0019] Further advantages and preferred features and combinations of features result from, in particular, that which has been described above and from the claims. The invention is to be described in more detail hereinafter with reference to the drawing, in which:

[0020] FIGS. 1A and 1B show a bearing piece with an advantageous closing system,

[0021] FIG. 2A shows a first longitudinal sectional view through the bearing piece and

[0022] FIG. 2B shows a second longitudinal sectional view through the bearing piece in a plane rotated by 90° relative to the view shown in FIG. 2A.

[0023] FIGS. 1A and 1B show in different views a closing system 1 for a door or hatch, not shown here, of a motor vehicle. In this case FIG. 1A shows the closing system 1 in a plan view and FIG. 1B shows the closing system 1 in a side view.

[0024] The closing system 1 has a bearing piece 2 which is produced from plastics and which may be fastened to the door or hatch. The bearing piece is configured to bear in a movable manner an actuatable door handle of the motor vehicle, a user being able to unlock and open the hatch or door thereby. For reasons of clarity the door handle is not shown.

[0025] The bearing piece 2 also bears a cylinder lock 3. This cylinder lock has a cylinder bushing 4 which is fastened to the bearing piece 2 and in which a cylinder core 5 is rotatably mounted. The cylinder core 5 has a receiver for a suitable key so that a rotational movement of the cylinder core 5 is only possible when the associated key is inserted into the key receiver. The cylinder core 5 is connected to a locking mechanism, the hatch or door being able to be blocked thereby on a vehicle frame. For reasons of clarity, the locking mechanism is not shown but is known to the person skilled in the art.

[0026] A locking clamp 6, which is located in a plane perpendicular to the longitudinal central axis of the cylinder bushing 4 and which radially engages the cylinder bushing 4 from behind, is present for blocking the cylinder bushing 4 on the bearing piece 2.

[0027] For illustrative purposes, FIGS. 2A and 2B in each case show longitudinal sectional views through the bearing piece 2, level with the central longitudinal axis of the cylinder bushing 4. In this case FIG. 2A shows a longitudinal section through the closing system 1 along the line A-A. FIG. 2B shows a longitudinal sectional view through the closing system 1 along the line B-B of FIG. 1B. The two cutting planes are thus located at an angle of 90° to one another and in each case run through the longitudinal central axis of the cylinder bushing 4.

[0028] As visible from FIGS. 2A and 2B, the locking clamp 6 encompasses the cylinder bushing 4 in an annular manner. In this case the locking clamp 6 is positively held in the axial direction by the bearing piece 2, so that said locking clamp is displaceable, in particular only radially, relative to the cylinder bushing 4. To this end the bearing piece 2 has a guide receiver 7, the locking clamp 6 being displaceably mounted thereby radially to the cylinder bushing 4. As FIG. 2B shows, the cylinder bushing 4 has a lateral radial depression 8 into which the locking clamp 6 may be pulled in order to fasten the cylinder bushing 4 axially to the bearing piece 2. In order to ensure the seat of the locking clamp 6 in the depression 8 permanently, the locking clamp 6 is assigned a fastening screw 9.

[0029] The locking clamp 6 has a holding lug 10 which, as shown for example in FIGS. 1B and 2B, is oriented at least substantially parallel to the longitudinal central axis of the cylinder bushing 4 and has a screw opening 11 with an internal thread 12. The fastening screw is firstly screwed into the internal thread 12 with a screw tip 13 in the direction of the cylinder bushing 4. As a result, the longitudinal central axis of the fastening screw 9 is oriented at least substantially radially to the cylinder bushing 4. The screw tip 13 is configured to engage radially in a receiving depression 14 of the cylinder bushing 4. To this end, the screw tip 13 and the receiving depression 14 are configured so as to correspond to one another. According to the present exemplary embodiment, the screw tip 13 and the receiving depression 14 have a cylindrical longitudinal section. Optionally the screw tip 13 and the receiving depression 14 have a conical longitudinal section in order to facilitate the threading of the fastening screw 9 into the receiving depression 14 and to permit self-centering.

[0030] If the fastening screw 9 is now screwed into the thread 12, so that the screw tip 13 comes to rest in the receiving depression 14, as shown in FIG. 2B, the locking clamp 6 at its end remote from the holding lug 10 is screwed with an increasing insertion depth into the radial depression 8 of the cylinder bushing 4 which is configured on the side opposing and/or remote from the receiving depression 14, whereby the cylinder bushing 4 is fixedly fastened to the bearing piece 2.

[0031] The closing system 1 also has a protective element 15. The protective element 15 is configured as a protective plate 16 which bears against an outer face of the bearing piece 2. As visible in FIG. 1A, the protective element 15 is of annular configuration so that it surrounds the cylinder bushing 4 in a manner similar to the locking clamp 6. The protective element 15 is arranged, in particular, parallel to the locking clamp 6. By means of the annular configuration, the protective element 15 has an opening 16 through which the cylinder bushing 5 protrudes. In this case, the clear width of the opening 16 is smaller than the width of a cylinder bushing head 17 of the cylinder bushing 4. The cylinder bushing head 17 of the cylinder bushing 4 protrudes from the bearing piece 2 so that the protective element 15 is located below the cylinder head 17 and is able to be preloaded between the cylinder head 17 and the bearing piece 2.

[0032] The protective element 15 is screwed, for example, to the bearing piece 2 in order to secure its position in the bearing piece 2. If this is carried out, the cylinder bushing 4 may no longer be forced inwardly into the door or hatch, since the cylinder bushing head 17 is supported on the protective element 15.

[0033] Optionally, an external cladding 18 of the door or hatch, in particular in the form of a cladding plate which extends in the region of the cylinder head 17 and the protective element 15, is also arranged between the protective element 15 and the cylinder head 17.

[0034] The protective element 15 is configured so as to bear flat against the bearing piece 2 in order to transmit high forces onto the bearing piece 2. Said protective element prevents the closing system 1 from being able to be broken into by the closing cylinder 3 being forced in.

[0035] Moreover, the protective plate 15 has a retaining lug 19 which extends at least substantially parallel to the closing cylinder 3. In this case the retaining lug 19 is configured such that it has an opening 20, the internal diameter thereof being only slightly larger than the external diameter of the fastening screw 9. The retaining lug 19 extends sufficiently far parallel to the closing cylinder 3 that the opening 20 is located level with the fastening screw 9, wherein the retaining lug 19 in this case is preferably located between the fastening lug 10 and the cylinder bushing 4. The fastening screw 9, as visible in particular in FIG. 2B, is guided through the opening 20 so that the screw is radially encompassed and supported by the retaining lug 19.

[0036] If in the case of an attempted break-in, a high force is now exerted on the fastening screw 9, for example in order to remove this screw by force from the receiving depression 14, the protective element 15 with the retaining lug 19 prevents the fastening screw 9 from being bent out of the receiving depression 14. As a result, the closing system 1 is reliably prevented from being broken into.

[0037] In particular, the protective element 15 and the locking clamp 6 are produced from metal in order to withstand high forces and to protect the bearing piece 2 from damage.

[0038] In order to ensure the seal, an annular resiliently deformable sealing element 21 is preferably also held in a preloaded manner between the cylinder bushing head 17 and the external cladding part 18 or protective element 15.

LIST OF REFERENCE NUMERALS

[0039] 1 Closing system [0040] 2 Bearing piece [0041] 3 Cylinder lock [0042] 4 Cylinder bushing [0043] 5 Cylinder core [0044] 6 Locking clamp [0045] 7 Guide receiver [0046] 8 Depression [0047] 9 Fastening screw [0048] 10 Holding lug [0049] 11 Screw opening [0050] 12 Internal thread [0051] 13 Screw tip [0052] 14 Receiving depression [0053] 15 Protective element [0054] 16 Opening [0055] 17 Cylinder bushing head [0056] 18 External cladding [0057] 19 Retaining lug [0058] 20 Opening [0059] 21 Sealing element