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A cylindrical lockset comprises a multiple-compartment lock cage subassembly. A retractor is housed within a middle lock cage compartment. Spindle return torsion springs, for biasing corresponding handle-carrying spindles to their default positions, are housed within axially adjacent lock cage compa

A cylindrical lockset comprises a multiple-compartment lock cage subassembly. A retractor is housed within a middle lock cage compartment. Spindle return torsion springs, for biasing corresponding handle-carrying spindles to their default positions, are housed within axially adjacent lock cage compartments. A torque plate transfers torque from the lock cage subassembly to relatively radially distal trim posts. A knob catch assembly seated in each handle-carrying spindle comprises a generally elliptically-shaped wrap around catch spring and a knob catch backup washer to resist axial loads produced by efforts to pull a handle off of the spindle. A key spindle provides a dog travel window defined by a closed, continuous edge of the key spindle, which window is positioned opposite of an axially-extending seam of the key spindle.

대표청구항 ▼

1. A cylindrical lock assembly comprising: a sheet metal lock cage defining an enclosure for housing components of the cylindrical lock assembly, the lock cage configured to be inserted within a cylindrical bore of a door, the lock cage having first and second ends;two sheet metal separator plates d

1. A cylindrical lock assembly comprising: a sheet metal lock cage defining an enclosure for housing components of the cylindrical lock assembly, the lock cage configured to be inserted within a cylindrical bore of a door, the lock cage having first and second ends;two sheet metal separator plates dividing the enclosure into a first end compartment, a second end compartment, and a middle compartment of the lock cage, wherein the separator plates are mounted in stationary relation to the lock cage;a retractor housed within the middle compartment;first and second spindle bearings mounted to first and second ends, respectively, of the lock cage;first and second door handle spindles mounted within the spindle bearings; andat least a first spindle return torsion spring, for biasing a spindle to a non-latch-retracting position, housed within one of the first and second end lock cage compartments. 2. The cylindrical lock assembly of claim 1, wherein the lock cage comprises a sheet metal main piece that defines multiple sides of the lock cage. 3. The cylindrical lock assembly of claim 2, wherein the lock cage further comprises a sheet metal end plate configured to be mounted on the main piece. 4. The cylindrical lock assembly of claim 3, further comprising lugs and corresponding end plate slots for mounting the end plate to the main piece, the lugs and corresponding end plate slots configured to enable the end plate to be directly axially inserted on and mounted to the main piece, without axial offset, and including keepers configured to retain the end plate on the main piece. 5. The cylindrical lock assembly of claim 2, wherein each separator plate is configured to mount within slots of the main piece of the lock cage. 6. The cylindrical lock assembly of claim 1, wherein each separator plate includes a spindle aperture for passage therethrough of a corresponding spindle and rotary movement of the corresponding spindle relative to the stationary separator plate. 7. The cylindrical lock assembly of claim 1, wherein at least one of the separator plates includes a spring tab configured to stop a leg of the spindle return torsion spring as a corresponding spindle is rotated. 8. The cylindrical lock assembly of claim 1, further comprising, for each separator plate, a thrust washer configured for seating on a lock cage end of a corresponding spindle to provide an enlarged bearing surface between the corresponding spindle and the separator plate. 9. The cylindrical lock assembly of claim 1, wherein each spindle bearing includes an arcuate handle-side rotational stop to prevent over-rotation of a compatibly-configured handle mounted on the spindle borne by the bearing. 10. The cylindrical lock assembly of claim 9, further comprising a compatibly-configured handle comprising a sleeve with a stepped, axially extending portion that butts against the handle-side rotational stop at configured limits of handle rotation. 11. The cylindrical lock assembly of claim 1, wherein each spindle bearing includes arcuate cage-side rotational stops to prevent over-rotation of the spindle borne by the bearing. 12. The cylindrical lock assembly of claim 11, wherein each spindle includes a tab that butts against the cage-side rotational stops at configured limits of spindle rotation. 13. The cylindrical lock assembly of claim 1, further comprising a torque plate configured to transfer torque from the lock cage to relatively radially distal trim posts. 14. The cylindrical lock assembly of claim 1, further comprising: a key spindle assembly mounted in one of the first and second spindles;the key spindle assembly having one or more retractor activation cams operable, upon rotation of the key spindle assembly, to cam the retractor into a latch-retracting position; and wherein: the key spindle assembly comprises a key spindle housing a key spindle dog for rotation within the key spindle;the key spindle dog has a dog arm protruding through a dog travel window of the key spindle;the dog travel window is defined by a closed, continuous edge of the key spindle; andthe dog arm further protrudes into a key spindle dog driving slot of the corresponding spindle, rotationally interlocking the spindle to the dog arm. 15. The cylindrical lock assembly of claim 1, further comprising: a key spindle assembly mounted in one of the first and second spindles;the key spindle assembly having one or more retractor activation cams operable, upon rotation of the key spindle assembly, to cam the retractor into a latch-retracting position; and wherein: the key spindle assembly comprises a key spindle formed from a sheet metal piece rolled up into a generally tubular form, with edges of the sheet metal piece defining an axially extending seam;the key spindle houses a key spindle dog for rotation within the key spindle;the key spindle dog has a dog arm protruding through a dog travel opening of the key spindle;the dog travel opening is positioned on a side of the key spindle opposite the axially extending seam; andthe dog arm further protrudes into a key spindle dog driving slot of the corresponding spindle, rotationally interlocking the spindle to the dog arm. 16. A cylindrical lock assembly comprising: a sheet metal cover cylinder with an outer radius sized for insertion and fit into a cylindrical aperture of a door;a sheet metal lock cage housed within the sheet metal cover cylinder, the sheet metal lock cage defining an enclosure for housing components of the cylindrical lock assembly and having opposite ends;first and second spindle bearings coaxially mounted at the opposite ends of the sheet metal lock cage and through opposite coaxial openings of the sheet metal cover cylinder;first and second door handle spindles mounted within the spindle bearings;a retractor housed within the sheet metal cover cylinder and sheet metal lock cage; andat least one spindle return torsion spring, for biasing a door handle spindle to a non-latch retracting position, housed within the sheet metal cover cylinder and sheet metal lock cage. 17. A cylindrical door lock assembly comprising: a sheet metal lock cage defining an enclosure for housing components of the cylindrical lock assembly, the lock cage configured to be inserted within a cylindrical bore of a door, the lock cage having opposite ends;first and second spindle bearings coaxially mounted at opposite ends of the sheet metal lock cage;first and second door handle spindles mounted within the spindle bearings;a retractor housed within the sheet metal lock cage; anda torque plate configured to be mounted adjacent a door face and coupled to the sheet metal lock cage, for transferring torque from the lock cage to relatively radially distal trim posts of a cylindrical door lock trim assembly. 18. The cylindrical door lock assembly of claim 17, wherein: the torque plate includes tabs configured to index into the lock cage;the torque plate is configured to be mounted between the lock cage and a door trim rose; andthe torque plate includes two radially distal notches configured to interface with the trim posts. 19. The cylindrical door lock assembly of claim 17, wherein the torque plate is a distinct piece configured to seat into a rose insert. 20. The cylindrical door lock assembly of claim 17, wherein the torque plate is integrally formed with a rose insert.