Lock cylinder

Patent metadata

Field	Value
Publication number	US-10006224-B2
Application number	US-201514977724-A
Country	US
Kind code	B2
Filing date	Dec 22, 2015
Priority date	Dec 29, 2014
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A lock cylinder comprises a cylinder housing, a disk housing rotatably supported about a cylinder axis in the cylinder housing and a plurality of rotatably supported disk tumblers arranged along the cylinder axis in the disk housing, wherein each disk tumbler has a reception opening for a key, a blocking cut-out at the outer periphery for an at least partial reception of a blocking pin aligned in parallel with the cylinder axis and a fixing cut-out provided offset from the blocking cut-out at the outer periphery for an at least partial reception of a core pin aligned in parallel with the cylinder axis. The disk tumblers are rotatable from a starting position with a removed key into an end sorting position by a rotation of the introduced key in the latching direction, in which end sorting position the blocking cut-outs of all the disk tumblers are oriented in alignment with one another, viewed in the direction of the cylinder axis. The fixing cut-outs of all the disk tumblers are oriented in alignment with one another in the end sorting position, viewed in the direction of the cylinder axis. The lock cylinder is adapted such that, on a further rotation of the disk tumblers out of the end sorting position in the unlatching direction, the core pin first engages into the fixing cut-outs and the blocking pin only then engages into the blocking cut-outs.

First claim

The invention claimed is:

1. A lock cylinder comprising
a cylinder housing,
a disk housing rotatably supported about a cylinder axis in the cylinder housing;
a plurality of rotatably supported disk tumblers arranged along the cylinder axis in the disk housing,
wherein each disk tumbler has a reception opening for a key, a blocking cut-out at the outer periphery for an at least partial reception of a blocking pin aligned in parallel with the cylinder axis and, offset from the blocking cut-out, a fixing cut-out provided at the outer periphery for an at least partial reception of a core pin aligned in parallel with the cylinder axis; and
wherein the disk tumblers are rotatable from a starting position with a removed key by a rotation of the introduced key in an unlatching direction (D) into an end sorting position in which the blocking cut-outs of all the disk tumblers are oriented in alignment with one another, viewed in the direction of the cylinder axis; and

wherein the fixing cut-outs of all the disk tumblers are oriented in alignment with one another in the direction of the cylinder axis in the end sorting position, with the lock cylinder being adapted such that, on a further rotation of the disk tumblers out of the end sorting position in the unlatching direction (D), the core pin first engages into the fixing cut-outs and the blocking pin only then engages into the blocking cut-outs, wherein the core pin engages into a core pin reception recess of the cylinder housing in the end sorting position and the lock cylinder is adapted such that the core pin is urged radially inwardly into the fixing cut-outs by a rotation of the key out of the end sorting position in the unlatching direction (D), wherein the blocking pin engages into a blocking pin reception recess of the cylinder housing in the end sorting position and the lock cylinder is adapted such that, once the core pin has been urged into the fixing cut-outs, the blocking pin is urged radially inwardly into the blocking cut-outs by a further rotation of the key in the unlatching direction (D), wherein the core pin reception recess of the cylinder housing into which the core pin engages in the end sorting position extends over a smaller peripheral angle than the blocking pin reception recess of the cylinder housing into which the blocking pin engages in the end sorting position.

2. A lock cylinder comprising:
a cylinder housing,
a disk housing rotatably supported about a cylinder axis in the cylinder housing;
a plurality of rotatably supported disk tumblers arranged along the cylinder axis in the disk housing,
wherein each disk tumbler has a reception opening for a key, a blocking cut-out at the outer periphery for an at least partial reception of a blocking pin aligned in parallel with the cylinder axis and, offset from the blocking cut-out, a fixing cut-out provided at the outer periphery for an at least partial reception of a core pin aligned in parallel with the cylinder axis; and
wherein the disk tumblers are rotatable from a starting position with a removed key by a rotation of the introduced key in an unlatching direction (D) into an end sorting position in which the blocking cut-outs of all the disk tumblers are oriented in alignment with one another, viewed in the direction of the cylinder axis; and

wherein the fixing cut-outs of all the disk tumblers are oriented in alignment with one another in the direction of the cylinder axis in the end sorting position, with the lock cylinder being adapted such that, on a further rotation of the disk tumblers out of the end sorting position in the unlatching direction (D), the core pin first engages into the fixing cut-outs and the blocking pin only then engages into the blocking cut-outs,
wherein the core pin engages into a core pin reception recess of the cylinder housing in the end sorting position and the lock cylinder is adapted such that the core pin is urged radially inwardly into the fixing cut-outs by a rotation of the key out of the end sorting position in the unlatching direction (D), wherein the blocking pin engages into a blocking pin reception recess of the cylinder housing in the end sorting position and the lock cylinder is adapted such that, once the core pin has been urged into the fixing cut-outs, the blocking pin is urged radially inwardly into the blocking cut-outs by a further rotation of the key in the unlatching direction (D),
wherein the core pin reception recess of the cylinder housing is bounded by a core pin guide chamfer in the unlatching direction (D) and the blocking pin reception recess of the cylinder housing is bounded by a blocking pin guide chamfer in the unlatching direction (D), with the angular spacing between the core pin and the core pin guide chamfer being smaller in the end sorting position than the angular spacing between the blocking pin and the blocking pin guide chamfer.

3. A lock cylinder in accordance with claim 2 ,
wherein the core pin fixes the disk housing against a rotation at the cylinder housing when the core pin engages into the core pin reception recess of the cylinder housing in the end sorting position.

4. A lock cylinder comprising
a cylinder housing;
a disk housing rotatably supported about a cylinder axis in the cylinder housing;
a plurality of rotatably supported disk tumblers arranged along the cylinder axis in the disk housing,
wherein each disk tumbler has a reception opening for a key, a blocking cut-out at the outer periphery for an at least partial reception of a blocking pin aligned in parallel with the cylinder axis and, offset from the blocking cut-out, a fixing cut-out provided at the outer periphery for an at least partial reception of a core pin aligned in parallel with the cylinder axis; and
wherein the disk tumblers are rotatable from a starting position with a removed key by a rotation of the introduced key in an unlatching direction (D) into an end sorting position in which the blocking cut-outs of all the disk tumblers are oriented in alignment with one another, viewed in the direction of the cylinder axis; and
wherein the fixing cut-outs of all the disk tumblers are oriented in alignment with one another in the direction of the cylinder axis in the end sorting position, with the lock cylinder being adapted such that, on a further rotation of the disk tumblers out of the end sorting position in the unlatching direction (D), the core pin first engages into the fixing cut-outs and the blocking pin only then engages into the blocking cut-outs, wherein the lock cylinder has a control element or blocking element which is separate from the blocking pin and which fixes the disk housing against a rotation in the unlatching direction (D) at the cylinder housing during the rotation of the disk tumblers into the end sorting position.

5. A lock cylinder in accordance with claim 4 ,
wherein the blocking element is arranged in front of the disk tumblers, with respect to a key introduction direction (A), and is rotationally fixedly coupled to the disk housing, with the blocking element being movable by a rotation of the key in an unlatching direction (D) out of a blocking position in which the blocking element engages into a reception recess of the cylinder housing into a release position in which the blocking element is out of engagement with the reception recess.

6. A lock cylinder comprising
a cylinder housing;
a disk housing rotatably supported about a cylinder axis in the cylinder housing;
a plurality of rotatably supported disk tumblers arranged along the cylinder axis in the disk housing,
wherein each disk tumbler has a reception opening for a key, a blocking cut-out at the outer periphery for an at least partial reception of a blocking pin aligned in parallel with the cylinder axis

Assignees

• Bremicker Soehne Kg A

Inventors

• Wehr Michel

Classifications

• E05B29/00 Primary

  Cylinder locks {and other locks} with plate tumblers which are set by pushing the key in {(fastening of cylinders, rotors, plugs or cores E05B9/084; with magnetic tumblers E05B47/0044; with electromagnetic control E05B47/0611)} · CPC title

• E05B29/0013 Primary

  with rotating plate tumblers (E05B29/0033 takes precedence; plate tumblers which are not set by inserting the key E05B21/06) · CPC title

• E05B21/066 Primary

  of the rotary-disc tumbler type (tumblers which are set by inserting the key E05B29/0013) · CPC title

• E05B15/14

  Tumblers · CPC title