초록 ▼

A cylindrical lock includes a retractor (131) mounted between inner and outer operational devices (10, 12) and operably connected to a latch (779). The inner operational device (10) includes an inner chassis (20), an inner spindle (76), and an inner lining (60) made of a material harder than the inn

A cylindrical lock includes a retractor (131) mounted between inner and outer operational devices (10, 12) and operably connected to a latch (779). The inner operational device (10) includes an inner chassis (20), an inner spindle (76), and an inner lining (60) made of a material harder than the inner spindle (76). The outer operational device (12) includes an outer chassis (305), an outer spindle (379), and an outer lining (353) made of a material harder than the outer spindle (379). Inner and outer returning devices (38A, 38B) are provided for returning the inner and outer spindles (76, 379). A torsion spring (50A, 50B) of each of the inner and outer returning devices (38A, 38B) is mounted to a push ring (40A, 40B) before assembly with the inner and outer chassis (20, 305), allowing easy assembly of the torsion springs (50A, 50B).

대표청구항 ▼

1. A cylindrical lock comprising, in combination: an inner chassis including inner and outer ends spaced in a longitudinal direction, with the inner chassis further including a space extending from the inner end of the inner chassis toward but spaced from the outer end of the inner chassis, with a r

1. A cylindrical lock comprising, in combination: an inner chassis including inner and outer ends spaced in a longitudinal direction, with the inner chassis further including a space extending from the inner end of the inner chassis toward but spaced from the outer end of the inner chassis, with a rib formed on an inner periphery of the space, with the inner chassis further including an axial hole extending from the outer end of the inner chassis to the space, with the inner chassis adapted to be mounted in a first mounting hole of a door, with the door having inner and outer sides spaced in the longitudinal direction;an inner locking ring mounted around the inner chassis, with the inner locking ring adapted to abut the inner side of the door;a first push ring pivotably received in the space of the inner chassis and adjacent to the outer end of the inner chassis, with the first push ring including a sleeve portion having first and second ends spaced in the longitudinal direction, with an actuating groove defined in an outer periphery of the sleeve portion of the first push ring, with a first push leg extending from one of the first and second ends of the sleeve portion of the first push ring, with the first push leg spaced from the outer periphery of the sleeve portion of the first push ring in a radial direction perpendicular to the longitudinal direction;a first torsion spring mounted around the sleeve portion of the first push ring, with the first torsion spring including first and second tangs abutting two sides of the first push leg of the first push ring, with the rib of the inner chassis located between the first and second tangs of the first torsion spring, wherein when the first push ring pivots in the circumferential direction, the first push leg pivots the first tang of the first push ring, and the second tang of the first push ring is retained on the rib of the inner chassis;an inner lining mounted in the space of the inner chassis and made of a material having a hardness of HRB80-HRB100, with the inner lining including first and second sides spaced in the longitudinal direction, with a pivot hole defined in the second side of the inner lining and aligned with the axial hole of the inner chassis, with the second side of the inner lining abutting the push ring;an inner spindle pivotably received in the axial hole of the inner chassis, with the inner spindle made of a material having a hardness of HRC35-HRC50, with the inner spindle including an inner end located in the inner chassis and an outer end located outside of the inner chassis, with the inner spindle further including an outer periphery extending between the inner and outer ends of the inner spindle, with a lug formed on the inner end of the inner spindle and protruding radially outward away from the outer periphery of the inner spindle, with an actuating block protruding outward from the outer periphery of the inner spindle and located adjacent to the inner end of the inner spindle, with a portion of the inner spindle adjacent to the inner end being pivotably received in the pivot hole of the inner lining, with the lug located outside of the first side of the inner lining, with the outer end of the inner spindle located outside of the outer end of the inner chassis, with the actuating block of the inner spindle engaged with the actuating groove of the first push ring;an inner handle mounted to the outer end of the inner spindle and located beyond the outer end of the inner chassis, with the inner spindle and the push ring pivoting together with the inner handle in a circumferential direction about the longitudinal direction when the inner handle pivots in the circumferential direction;an outer chassis including inner and outer ends spaced in the longitudinal direction, with the outer chassis further including a space extending from the inner end of the outer chassis toward but spaced from the outer end of the outer chassis, with a rib formed on an inner periphery of the space of the outer chassis, with the outer chassis further including an axial hole extending from the outer end of the outer chassis to the space of the outer chassis, with the outer chassis adapted to be mounted in the first mounting hole of the door, with two engagement arms extending from the inner end of the outer chassis and fixed to the inner chassis, with the inner end of the inner chassis spaced from the inner end of the outer chassis;an outer locking ring mounted around the outer chassis, with the outer locking ring adapted to abut the outer side of the door;a second push ring pivotably received in the space of the outer chassis and adjacent to the outer end of the outer chassis, with the second push ring including a sleeve portion having first and second ends spaced in the longitudinal direction, with an actuating groove defined in an outer periphery of the sleeve portion of the second push ring, with a second push leg extending from one of the first and second ends of the sleeve portion of the second push ring, with the second push leg spaced from the outer periphery of the sleeve portion of the second push ring in a radial direction perpendicular to the longitudinal direction;a second torsion spring mounted around the sleeve portion of the second push ring, with the second torsion spring including first and second tangs abutting two sides of the second push leg, with the rib of the outer chassis located between the first and second tangs of the second torsion spring, wherein when the second push ring pivots in the circumferential direction, the second push leg pivots the first tang of the second push ring, and the second tang of the second push ring is retained on the rib of the outer chassis;an outer lining mounted in the space of the outer chassis, with the outer lining made of a material having a hardness of HRB80-HRB100, with the outer lining including first and second sides spaced in the longitudinal direction, with a pivot hole defined in the second side of the outer lining and aligned with the axial hole of the outer chassis, with the second side of the outer lining abutting one of the first and second ends of the second push ring;an outer spindle pivotably received in the outer chassis, with the outer spindle made of a material having a hardness of HRC35-HRC50, with the outer spindle including an inner end and an outer end, with the outer spindle further including an outer periphery extending between the inner and outer ends of the outer spindle, with an actuating block protruding outward from the outer periphery of the outer spindle, with the outer spindle including a receiving space extending from the inner end of the outer spindle through the outer end of the outer spindle, with the inner end of the outer spindle pivotably received in the pivot hole of the outer lining, with the outer end of the outer spindle located outside of the outer end of the outer chassis, with the actuating block of the outer spindle engaged with the actuating groove of the second push ring;an outer handle mounted to the outer end of the outer spindle and located beyond the outer end of the outer chassis, with the outer spindle and the push ring pivoting together with the outer handle in the circumferential direction when the outer handle pivots in the circumferential direction;an actuating cylinder received in the receiving space of the outer spindle, with the actuating cylinder including a tab, with the actuating cylinder pivoting together with the outer handle when the outer handle pivots in the circumferential direction; anda retractor including two lateral surfaces defining first and second push faces, respectively, with the retractor slideably received between the inner end of the inner chassis and the inner end of the outer chassis, with the lug of the inner spindle abutting the second push face, with the tab of the actuating cylinder abutting the first push face, with the retractor adapted to be connected to a drawing member of a latch device mounted in a second mounting hole of the door in communication with the first mounting hole, with the latch device including a latch movable between a latching position in the door and an unlatching position outside of the door, with the retractor movable between a first position in which the latch is in the latching position and a second position in which the latch is in the unlatching position;wherein when the inner handle pivots in the circumferential direction, the lug of the inner spindle presses against the second push face of the retractor, moving the retractor from the first position to the second position, andwherein when the outer handle pivots in the circumferential direction, the outer spindle and the actuating cylinder pivot in the circumferential direction, and the tab of the actuating cylinder presses against the first push face of the retractor, moving the retractor from the first position to the second position. 2. The cylindrical lock as claimed in claim 1, with a receiving compartment extending from the first side toward but spaced from the second side of the outer lining, with the pivot hole defined in the second side of the outer lining and extending to the receiving compartment, with the receiving compartment including an inner periphery having a movement groove, with the movement groove including two stepped portions spaced in the circumferential direction, with a restraining groove extending radially outward from an inner periphery of the pivot hole of the outer lining, with the restraining groove extending from the second side of the outer lining to the movement groove, with the actuating cylinder including first and second ends spaced in the longitudinal direction, with a receptacle extending from the first end of the actuating cylinder toward but spaced from the second end of the actuating cylinder, with a channel formed in the first end of the actuating cylinder and in communication with the receptacle, with the channel including a narrower section extending from an end face of the first end of the actuating cylinder toward but spaced from the second end of the actuating cylinder, with the channel further including a wider section extending in the circumferential direction and intersecting an end of the narrower section distant to the first end of the actuating cylinder, with an insertion slot extending from the inner end of the outer spindle toward but spaced from the outer end of the outer spindle, with the cylindrical lock further comprising: a locking member pivotably received in the receptacle of the actuating cylinder, with the locking member including a cylindrical portion, with a tail formed on an outer periphery of the cylindrical portion, with the tail extending radially through the channel of the actuating cylinder and the insertion slot of the outer spindle into the movement groove of the outer lining, with the locking member movable in the longitudinal direction between an unlocking position in which the tail is received in the narrower portion of the channel and a locking position in which the tail is received in the wider portion of the channel;a knob received in the inner handle, with the knob manually movable relative to the inner handle in the longitudinal direction; anda push rod having an end fixed to the knob, with the push rod including a distal end abutting the locking member, with the knob manually operable to move the locking member between the locking and unlocking positions,wherein when the locking member is in the unlocking position, the tail is disengaged from the restraining groove of the outer lining, the tail is pivoted by a wall of the insertion slot of the outer spindle if the outer handle is pivoted, and the tail pushes a wall of the narrower portion of the channel of the actuating cylinder, causing the tab of the actuating cylinder to move the retractor from the first position to the second position, andwherein when the locking member is in the locking position, the tail is engaged in the restraining groove of the outer lining, preventing pivotal movement of the outer spindle. 3. The cylindrical lock as claimed in claim 2, with a restraining protrusion protruding outward from the outer periphery of the outer spindle, with the restraining protrusion including an abutment surface facing the outer end of the outer spindle, with an abutment face formed in an intersection between the receiving compartment and the pivot hole of the outer lining, with the abutment surface of the restraining protrusion abutting the abutment face of the outer lining, avoiding movement of the outer spindle away from the inner end of the outer chassis in the longitudinal direction. 4. The cylindrical lock as claimed in claim 1, with the retractor including front and rear ends spaced in the longitudinal direction, with the two lateral surfaces extending between the front and rear ends, with the retractor further including upper and lower surfaces spaced in a vertical direction perpendicular to the longitudinal direction and extending between the front and rear ends and extending between the two lateral surfaces, with an upper recess defined in the upper surface, with a lower recess defined in the lower surface, with each of the upper and lower recesses having two sidewalls, with two upper compartments defined in the two sidewalls of the upper recess and extending to the two lateral surfaces, forming two upper tongues spaced in the longitudinal direction, with two lower compartments defined in the two sidewalls of the lower recess and extending to the two lateral surfaces, forming two lower tongues spaced in the longitudinal direction, with each of the two upper compartments and the two lower compartments including an opening and an end wall connected to one of the two upper tongues and the two lower tongues, with the cylindrical lock further comprising: a first roller including a pivot hole, with the first roller received in the upper recess and partially extending beyond the upper surface of the retractor;a second roller including a pivot hole, with the second roller received in the lower recess and partially extending beyond the lower surface of the retractor;a first pivot rotatably mounted to the first roller, with the first pivot including two engagement sections spaced in the longitudinal direction and a pivotal section, with the pivotal section of the first pivot received in the pivot hole of the first roller, with the two engagement sections of the first pivot engaged in the two upper compartments and abutting the end walls of the two upper compartments, with the opening of each of the two upper compartments being smaller than each of the two engagement sections of the first pivot;a second pivot rotatably mounted to the second roller, with the second pivot including two engagement sections spaced in the longitudinal direction and a pivotal section, with the pivotal section of the second pivot received in the pivot hole of the second roller, with the two engagement sections of the second pivot engaged in the two lower compartments and abutting the end walls of the two lower compartments, with the opening of each of the two lower compartments being smaller than each of the two engagement sections of the second pivot; anda jacket mounted around the retractor, with the jacket including upper and lower walls spaced in the vertical direction and an intermediate wall extending between the upper and lower walls, with each of the upper and lower walls including an end distant to the intermediate wall and having a notch, with the jacket fixed between the inner end of the inner chassis and the inner end of the outer chassis, with the front end of the retractor facing the notches of the jacket, with the rear end of the retractor facing the intermediate wall, with the first and second rollers rollably abutting the upper and lower walls of the jacket, respectively, allowing the retractor to slide relative to the jacket between the first position adjacent to the notches and the second position away from the notches, moving the latch between the latching position and the unlatching position. 5. The cylindrical lock as claimed in claim 4, with each of the two engagement sections of the first pivot having a diameter smaller than a diameter of the pivotal section of the first pivot, with each of the two engagement sections of the second pivot having a diameter smaller than a diameter of the pivotal section of the second pivot. 6. The cylindrical lock as claimed in claim 4, with the pivotal section of the first pivot having a length in the longitudinal direction slightly smaller than a spacing between the two upper compartments in the longitudinal direction, with the pivotal section of the second pivot having a length in the longitudinal direction slightly smaller than a spacing between the two lower compartments in the longitudinal direction.