A lock includes a handle, a hub, and a spindle rotatably mounted in the hub and coupled to the handle to turn therewith. A transmission member is fixed to the handle to turn therewith. The transmission member is mounted around and not rotatably engaged with the spindle. The transmission member is st
A lock includes a handle, a hub, and a spindle rotatably mounted in the hub and coupled to the handle to turn therewith. A transmission member is fixed to the handle to turn therewith. The transmission member is mounted around and not rotatably engaged with the spindle. The transmission member is stopped by the hub after the handle has been turned through an angle, transmitting a torque from the handle to the hub via the transmission member. Thus, impact from the handle can be partly transmitted to the hub and then to a door on which the lock is mounted, instead of completely transmitted to the spindle. Damage to the spindle is, thus, avoided.
대표청구항▼
The invention claimed is: 1. A lock comprising: a handle including a shank having a recess in an inner periphery thereof; a hub including a pair of protrusions formed on an inner periphery thereof and angularly spaced from each other; a spindle rotatably mounted in the hub about a rotating axis ext
The invention claimed is: 1. A lock comprising: a handle including a shank having a recess in an inner periphery thereof; a hub including a pair of protrusions formed on an inner periphery thereof and angularly spaced from each other; a spindle rotatably mounted in the hub about a rotating axis extending along a longitudinal direction, with the spindle coupled to the handle to turn therewith; and a transmission member fixed to the handle to turn therewith, with the transmission member being a ring mounted around and securely engaged with the spindle, with the ring including an inner side facing the hub and an outer side facing away from the hub and spaced from the inner side in the longitudinal direction, with each of the inner and outer sides of the ring extending in a radial direction perpendicular to the rotating axis, with the ring further including an outer circular periphery extending between the inner and outer sides, with the ring further including a longitudinal hole through which the spindle extends, with the longitudinal hole extending from the inner side through the outer side in the longitudinal direction and having an inner circular periphery extending between the inner and outer sides and spaced from the outer circular periphery in the radial direction, with an arcuate stop extending contiguously with and perpendicularly to the inner side of the ring and parallel to the rotating axis in the longitudinal direction, with the arcuate stop being radially outwards of the longitudinal hole and extending concentrically with the longitudinal hole, and with the ring slideable between the protrusions of the hub when the handle is turned, with an arcuate engaging portion extending contiguously with and perpendicularly to the outer side of the ring and parallel to the rotating axis in the longitudinal direction and extending concentrically with the outer circular periphery, with the arcuate engaging portion spaced from the outer circular periphery in the radial direction towards the spindle, with the spindle received within and slideable relative to arcuate engaging portion, with the arcuate engaging portion directly received within the recess of the shank of the handle to allow joint rotation of the transmission member and the handle, wherein the arcuate stop engages with and is stopped by one of the protrusions of the hub after the handle has been turned through an angle by a rotational force, and wherein when a torque is applied to the handle that has been turned through the angle, the torque is imparted to the hub via the transmission member preventing the spindle from being damaged by the torque. 2. The lock as claimed in claim 1, with the spindle further including a coupling groove extending in the longitudinal direction and the radial direction in an outer periphery of the spindle, with the ring further including a key extending inward in the radial direction from the inner periphery defining the longitudinal hole, with the key coextensive with the longitudinal hole in the longitudinal direction, with the key of the ring engaged in the coupling groove of the spindle to prevent relative rotation between the ring and the spindle about the rotating axis of the handle, and with the recess of the shank being coupled with the engaging portion of the transmission member while the key of the transmission member is coupled with the coupling groove of the spindle. 3. The lock as claimed in claim 2, with the key being angularly spaced from the engaging portion by a first angle, with the spindle further including a notch angularly spaced from the coupling groove by a second angle the same as the first angle, with the shank of the handle further including a protrusion on the inner periphery thereof and aligned with the recess in the longitudinal direction, with the notch of the spindle being coupled with the protrusion of the handle to allow joint rotation of the handle and the spindle while the key of the transmission member is coupled with the coupling groove of the spindle. 4. The lock as claimed in claim 1, further comprising: a torsion spring mounted around the spindle and including two tangs respectively pressing against two sides of one of the protrusions of the hub; and a positioning ring mounted around the spindle and intermediate the torsion spring and the inner side of the transmission member in the longitudinal direction, with the positioning member preventing disengagement of the torsion spring from the hub, with the positioning ring including a restraining groove in an outer periphery thereof, with two end walls delimiting the restraining groove respectively abutting against the protrusions of the hub, and with the stop of the transmission member slideably extending through the restraining groove of the positioning ring. 5. The lock as claimed in claim 4, with the spindle further including a coupling groove extending in the longitudinal direction and the radial direction in an outer periphery of the spindle, with the ring further including a key extending inward in the radial direction from the inner periphery defining the longitudinal hole, with the key coextensive with the longitudinal hole in the longitudinal direction, with the key of the ring engaged in the coupling groove of the spindle to prevent relative rotation between the ring and the spindle about the rotating axis of the handle, and with the recess of the shank being coupled with the engaging portion of the transmission member while the key of the transmission member is coupled with the coupling groove of the spindle. 6. The lock as claimed in claim 5, with the key being angularly spaced from the engaging portion by a first angle, with the spindle further including a notch angularly spaced from the coupling groove by a second angle the same as the first angle, with the shank of the handle further including a protrusion on the inner periphery thereof and aligned with the recess in the longitudinal direction, with the notch of the spindle being coupled with the protrusion of the handle to allow joint rotation of the handle and the spindle while the key of the transmission member is coupled with the coupling groove of the spindle.
Archer, Charles J.; Blocksome, Michael A.; Ratterman, Joseph D.; Smith, Brian E., Performing a scatterv operation on a hierarchical tree network optimized for collective operations.
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