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1. WO2011009787 - A CYLINDER LOCK

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[ EN ]

Claims

1. A cylinder lock comprising

a cylinder housing having

a plug receiving opening,

a lock cam opening extending substantially perpendicular to said plug receiving opening, and

a plurality of key pin housing channels adapted for accommodating tumbler pins therein,

a plug comprising

a cylindrical portion,

at least a first end opening for a first key,

a plurality of plug channels, and

a cam member mounted on the cylindrical portion of the plug so that the cam member is rotated when the plug is rotated in the housing,

characterised in that

the cam member is provided with at least one radially oriented cam key pin hole provided to cooperate with at least one correspondingly radially oriented plug channel in the plug.

2. A cylinder lock according to claim 1, wherein the cam member is fixed to the plug.

3. A cylinder lock according to claim 1 or 2, wherein the cam member comprises two lock key pin holes.

4. A cylinder lock according to any of the preceding claims, wherein the key pin holes in the cam member is provided with a side opening adapted to accommodate a ball and the key pin therein is provided with an aperture having an inclined surface such that the ball may be displaced towards the side opening when the key pin is moved radially outward.

5. A cylinder lock according to any of the preceding claims, wherein the ball has a diameter less than or equal to the diameter of the key pin.

6. A cylinder lock according to claim 5, wherein in association with the cam key pin ball is provided adapted to transferring movement in response to the insertion of a key in the key slot in the plug.

7. A cylinder lock according to claim 4, wherein said at least one side opening are arranged in the axial direction, and accordingly with two key pin holes in the cam member, the side openings are provided with opposite directions.

8. A cylinder lock according to any of the preceding claims, wherein the cylindrical portion has an outer diameter and wherein the cam member has an annular portion with an inner diameter, which is at least the same as the outer diameter of the cylindrical portion, so that the annular portion of the cam member is mounted by substantially encompassing the cylindrical plug surface.

9. A cylinder lock according to any of the preceding claims, wherein a portion of the cam member is adapted for slidable engagement with a portion of the plug.

10. A cylinder lock according to any of the preceding claims, wherein the cylindrical lock is a pin tumbler lock wherein the plug comprises plug channel openings and the housing comprises corresponding housing lock pin channels.

11. A cylinder lock according to claim 10, wherein the cam member has a mounting hole, which is adapted to cooperate with one of the plug channel opening for fixing mounting engagement by a fixation member, such as a screw.

12. A cylinder lock according to any of the preceding claims, wherein the plug comprises a number of plug channels arranged in a pattern, such as a line, wherein the at least one opening of the cam member and at least one of the plug channels in the centre of the pattern is adapted for engagement with at least one associated engagement member.

13. A cylinder lock according to any of the preceding claims, wherein the plug comprises a second end opening for a second key opposite the first end opening for the first key, said second end opening being aligned with a common axis with the first end opening, and wherein only one of the first and second keys can be inserted fully in the plug at the same time.

14. A cylinder lock according to claim 13, wherein the first end opening for a first key and the second end opening for a second key are arranged so that the first and second key are adapted for engagement with the same pins in the same plug channels when inserted fully into the plug.

15. A cylinder lock according to claims 13 or 14, wherein the first key has a portion which mirrors a corresponding portion of the second key or the key code and/or the key way is symmetric.

16. A cylinder lock according to any of the preceding claims, wherein the plug comprises a plug assembly having a cylindrical member with the cylindrical portion and a longitudinal key slot therein, and at least one end member with a keyhole opening.