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US 4,962,653 AGranted
Drive rod lock
AssigneeAug. Winkhaus GmbH & Co. KG
InventorLudger Kaup
Life of this patent
Estimating the term…
Abstract
In a drive rod lock the drive rod is moved from a lock cylinder through a step-down gearing between an open position and a closed position and vice versa. A coupling of the step-down gearing to the drive rod is proposed which permits, in the case of rotation of the lock cylinder through 2.degree..times.360.degree., of shifting the drive rod from the open position into the closed position against displacement, without a torque being introduced due to the blocking forces into the step-down gearing and thus the lock cylinder.
Claims26
Drive rod lock comprising
- a drive rod (16) displaceable between an open position (FIGS. 1 and 1a) and a closure position (FIG. 2) in combination with at least one lock element (18, 78, 106, 114, 116),
- a lock cylinder (1),
- a step-down gearing (A) between the lock cylinder (1) and the drive rode (16) for the displacement of the drive rod (16) between the open position and the closure position and
- a blocking device (28, 30) for the drive rod (16) which blocks the drive rode (16) in the closure position (FIG. 2) against displacement in the direction of the open position (FIGS. 1 and 1a) without torque introduction into the step-down gearing (A),
- where a control dog construction group (22) is fitted on the gear output drive rod drive pinion (20) for drive engagement with a dog engagement profiling (26, 26') of the drive rode (16) and
- where further a stop dog (28) is fitted on the gear output drive rode drive pinion (20) for action upon a counter-abutment face (31) of the drive rod (16),
- characterized in that
- (a) the dog engagement profiling (26, 26') is made with two recesses (26, 26'),
- (b) the drive dog construction group (22) comprises two preferably circular control dogs fitted on the drive dog drive pinion (20), which dogs engage successively in recesses (26, 26') allocated to them by pairs,
- (c) the stop dog (28) is arranged in the middle region of the circumferential distance between the two control dogs (24, 24') on the drive rod drive pinion (20),
- (d) the recess (26) loaded by a control dog in the closure position (FIG. 2) of the drive rode (16) is made with a limiting finger (30),
- (e) the stop dog (28) rests, when the drive rod is in the closure position (FIG. 2), on the flank (31), called blocking flank (31), of the limiting finger (30) which is remote from the recess (26) loaded by the control dog,
- (f) the drive rod (16) reaches its closure position before the closing rotating movement of the lock cylinder (1) and of the drive rode drive pinion (20) is terminated and the stop dog (28) after entry of the drive rod (16) into the locked position (FIG. 2), during the thereafter available remaining closure rotating movement of the lock cylinder (1) and of the drive rode drive pinion (20), reaches its blocking position on the blocking flank (31) of the limiting finger (30).
10 more elements
Drive rod lock comprising
- a drive rod (16) displaceable between an open position (FIG. 11) and a closure position (FIG. 15), in connection with at least one lock element (18),
- a lock cylinder (1), a step-down gearing (A) between the lock cylinder (1) and the drive rod (16) for displacing the drive rod (16) between the open position (FIG. 11) and the closure position (FIG. 15), where the step-down gearing (A) possesses on the lock cylinder side a toothed rim (10) which meshes with two drive-output wheels (12, 12') arranged after it and comprises a slot (2) open to the edge and formed for insertion of the lock bit (1a) of the lock cylinder (1), and where a drive rod drive member (20) of the step-down gearing (A), which member is rotatable about a non-displaceable axis (32), acts through an engaging device (24, 24', P) upon the drive rod (16),
- further comprising
- a bolt (18) which is displaceable transversely of the longitudinal axis of the drive rod (16) between a retracted position (FIG. 11) and an extended position (FIG. 15) and is driveable in response to the drive rod movement through movement conversion means (46, 46', 38, 38a, 40)
- and further comprising
- a catch (78) prestressed by spring force (59) into a closure position, which is retractable for the one part from a handle nut (80) and for the other from the lock cylinder (1), against the spring force (59),
- where the slot (2) of the toothed rim (10) is displaceable out of its zero degree position in at least one direction of rotation over a range of angle of variation of the lock bit (1a), without the occurrence of shift of the thrust bolt (18),
- a dog construction group (22) being provided on the drive rod driver member (20), with two control dogs (24, 24') and a stop dog (28) and a dog engagement profiling (P) being mounted for common linear movement with the drive rod (16) and provided with two recesses (26, 26') pertaining by pairs to the control dogs (24, 24') and two limiting fingers (30, 30') on both sides of the recesses (26, 26'), said dog construction group (22) and said dog engagement profiling (P) being so formed that on a rotation of the toothed rim (10) within the range of variation angle of the lock bit (1a) the engagement connection of the control dog (24), which is responsible for the beginning of the drive rod displacement out of the open position into the closure position, with the pertinent recess (26') is released and the limiting finger (30') pertaining to this recess (26') engages between the stop dog (28) and the axis (32) of the drive rod drive member (20), substantially blocking the displacement of the drive rod (16).
5 more elements
Dependencies are inferred from the claim text.