초록 ▼

In an attachment fitting for cylinder locks (3, 3') the heads (4a) of a plurality of screws (4) are seated in a widened hole portion (5a) in the lock. A plugging or latching element (6) is arranged to co-act with a sealing pin (7) in a manner such that when the plug (3a) of the cylinder lock (3) is

In an attachment fitting for cylinder locks (3, 3') the heads (4a) of a plurality of screws (4) are seated in a widened hole portion (5a) in the lock. A plugging or latching element (6) is arranged to co-act with a sealing pin (7) in a manner such that when the plug (3a) of the cylinder lock (3) is turned to a given position by means of a key, the sealing pin (7) moves inwardly in a peripheral hole (9) arranged in the plug, against the action of a spring (10). This enables the plugging or latching element (6) to be removed. Because of the presence of the plugging or latching element (6), however, the screw heads (4a) cannot be reached in order to loosen the screws by persons not having the correct key to the cylinder lock. The screws connect the cylinder lock (3) to a further cylinder lock (3') on the other side of the door.

대표청구항 ▼

1. A cylinder lock attachment-fitting comprising: (a) an escutcheon (2); (b) a cylinder lock (3) including a cylinder plug (3a); (c) one or more headed screws (4) for securing the cylinder lock; (d) one or more holes (5) for respective screws, said holes having a widened portion (5a ) in which

1. A cylinder lock attachment-fitting comprising: (a) an escutcheon (2); (b) a cylinder lock (3) including a cylinder plug (3a); (c) one or more headed screws (4) for securing the cylinder lock; (d) one or more holes (5) for respective screws, said holes having a widened portion (5a ) in which the head (4a) of the respective screw seats, (e) a screw-head (4a), a plugging element (6) anchored in the cylinder lock (3), said plugging element being so arranged that it can only be removed to provide access to said screw heads (4a) for loosening said screws (4) when the plug (3a) of the cylinder lock has been rotated to a given position of rotation by means of a key belonging to the lock, said plugging element (6) comprising a means at least partly covering one or more screw heads, and a recess in the form of a peripherally extending waisted portion (6a) of concave profile, and (f) a latching means (7) retractable into a radial hole (9) in the cylinder plug and having an end (7a) for coaction with said waisted portion (6a). 2. A cylinder lock attachment-fitting comprising: (a) an escutcheon (2), (b) a cylinder lock (3), (c) one or more headed screws (4) for securing the cylinder lock, (d) holes (5) for respective screws, said holes having a widened portion (5a) in which the head (4a) of the respective screw seats, and (e) a screw-head (4a) plugging element (6) anchored in the cylinder lock (3), said plugging element being so arranged that it can only be removed to provide access to said screw heads (4a) for loosening said screws (4) when the plug (3a) of the cylinder lock has been rotated to a given position of rotation by means of a key belonging to the lock, (f) a latching means (7) for latching the anchorage of the plugging element (6), wherein, when said latching means (7) occupies a release position in the cylinder plug (3a), said plugging element can be withdrawn from said widened hole portion (5a), (g) a radial hole (9) which is located in the cylinder plug (3a) and which extends radially to the periphery of the plug, (h) a bore (8) located between the hole portion (5a) which accommodates the plugging element (6), and the cylinder plug (3a), and extends at right angles to the axis of said widened hole portion (5a), the axis of said bore in said given position of said cylinder plug coinciding with the axis of the radial hole (9) located in said plug, and said bore (8) receiving said latching means (7), and (i) a spring means biasing latching means (7), whereat in said given angular position of the cylinder plug (3a), the latching means (7) is movable inwardly to its release position, against the action of said spring means (10), in which position the plugging element (6) can be withdrawn. 3. A cylinder lock attachment-fitting according to claim 2, characterized in that the latching means has the form of a pin (7) with a rounded end (7a) arranged to co-act with a concave recess (6a) in the plugging element (6). 4. A cylinder lock attachment-fitting comprising: (a) an escutcheon (2); (b) a cylinder lock (3); (c) one or more headed screws (4) for securing the cylinder lock; (d) one or more holes (5) for respective screws, said holes having a widened portion (5a) in which the head (4a) of the respective screw seats, and (e) a screw-head (4a) plugging element (6) anchored in the cylinder lock (3), said plugging element being so arranged that it can only be removed to provide access to said screw heads (4a) for loosening said screws (4) when the plug (3a) of the cylinder lock has been rotated to a given position of rotation by means of a key belonging to the lock, a latching means (7) retractable into a radial hole (9) in the cylinder plug and having an end (7a) for coaction with a waisted portion (6a) of the plugging element (6), said plugging element (6) including an outer end provided with a weakened grip portion (6b) of frusto-conical shape, arranged to fracture when force is exerted thereagainst for the purpose of withdrawing the plugging element (6). 5. A cylinder lock attachment-fitting according to any one of claims 2, 3, 1 or 4, characterized in that the cylinder lock is of circular-cylindrical configuration and is surrounded by a removable cover (20a) which covers screw heads (4a) and plugging elements (6) and which exhibits a hole for accommodating the plug (3a) of the cylinder lock. 6. A cylinder lock attachment-fitting according to any one of claims 2, 3, 1 or 4, characterized in that the plugging element (6) is accommodated in a separate hole (12) located to the side of the widened hole portion (5a), and exhibits a head member (6c) which directly, or indirectly via a separate cover plate (13), prevents one or more mutually adjacent screws (4) from being unscrewed. 7. A cylinder lock attachment-fitting according to claim 6, characterized in that the cylinder lock is of circular-cylindrical configuration and is surrounded by a removable cover (20a) which covers screw heads (4a) and plugging elements (6) and which exhibits a hole for accommodating the plug (3a) of the cylinder lock. 8. A cylinder lock attachment-fitting according to any one of claims 2, 3, 1 or 4, including a cylinder fitting (1) having an escutcheon (2) and (j) one or more holes (15) located externally of the cylinder lock, (k) a corresponding number of screws (16) provided with heads (16a) and inserted in said holes (15), said screws (16) being intended for connecting a further cylinder fitting (1') on the other side of a door or the like on which the cylinder fitting (1) is mounted, (l) an internal screw thread (2c) arranged in the end of the escutcheon (2) and being intended to receive (m) a catch plate or end plate (17) which is intended to cover the screw heads (16a) and which has a peripheral screw thread (17c) for screwing into the escutcheon (2), and with a hole (17a) in registry with the plug (3a) of the cylinder lock (3) so that the key opening (3b) of said plug is accessible, characterized by (n) one or more holes (17b) arranged in the catch plate or end plate (17) in registry with the widened hole portion (5a) in the cylinder lock (3) accommodating the plugging or latching element (6), which element (6) is passed through said hole (17b) in the catch plate or end plate (17) to anchor said plate against rotation. 9. A cylinder lock attachment-fitting according to claim 8, characterized in that the cylinder lock is of circular-cylindrical configuration and is surrounded by a removable cover (20a) which covers screw heads (4a) and plugging elements (6) and which exhibits a hole for accommodating the plug (3a) of the cylinder lock. 10. A cylinder lock attachment-fitting according to claim 8, characterized in that said hole (17b) is eccentrical relative to the axis of the catch plate or end plate (17). 11. A cylinder lock attachment-fitting according to claim 10, characterized in that the cylinder lock is of circular-cylindrical configuration and is surrounded by a removable cover (20a) which covers screw heads (4a) and plugging elements (6) and which exhibits a hole for accommodating the plug (3a) of the cylinder lock.