Closure fasteners – Bolts – Multiple
Patent
1997-07-29
1999-12-28
Boucher, Darnell M.
Closure fasteners
Bolts
Multiple
292165, 292 40, 292DIG60, E05C 106
Patent
active
060071141
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a latch-operable multibolt lock having a nut with a square recess for a latch or the like and with a kinematic connection to a least one push rod controlling a bolt.
BACKGROUND OF THE INVENTION
The bolts of multibolt locks are either pushed in and out by means of a lock cylinder with the assistance of the pertaining key or by turning a latch from a normal horizontal position upwards for locking and downwards for unlocking. The latter latch-operable multibolt locks have gears between the nut and the push rod or rods, whereby one model uses space-saving gear segments for reasons of space economy. The cost of these models is high and it is difficult to achieve high efficiency with small overall dimensions. A multitude of toothed connections leads to a play which has a negative effect on the operation of the multibolt lock.
OBJECTS OF THE INVENTION
It is the object of the invention to create a latch-operable multibolt lock, whose kinematics between the latch nut and the push rod is simple, saves space and is highly efficient.
SUMMARY OF THE INVENTION
This is achieved in that the nut is connected via a catch to a lever whose rotary motion is converted into a linear motion for the push rod, by means of a guide slot and a pin. Thereby it is suitable when the lever is built as a single-armed lever having a slot arranged in the longitudinal direction of the lever, wherein a slider is movably fitted, and when the slider bears on the pin which is rotatably supported in a bore of the push rod or of a push rod connection piece. In a technical reversal, the slot with the slider can also be provided in the push rod connection piece. The pin of the slider engages then in a bore on the frontal end of the single-armed lever. A concrete and advantageous embodiment is characterized in that the single-armed lever can be pivoted by approximately 45.degree. from a basic position which is perpendicular to the sliding direction of the push rod, and a pushing motion of the push rod, respectively rods, results in a locked position and from that an unlocked position. This construction allows for high torque to be transmitted to the push rods in a limited space, and thereby for creature of free spaces for catches and bolt constructions, as well as for locking mechanisms with lock cylinders as well as nut openings and panic functions. For this purpose it is particularly suitable when the slider in the slot is designed as an elongated slide bar which can be telescopically pushed out of the slot, and when the pin is provided on the radially outer end of the slider.
BRIEF DESCRIPTION OF THE DRAWING
The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
FIG. 1 is a side view of a multibolt lock according to the invention; and
FIG. 2 is a detail of FIG. 1.
SPECIFIC DESCRIPTION
According to FIG. 1 in a lock housing 1 two push rods 2, 3 are slidably supported. A spreading gearing with the pinion 6 causes the opposite sliding directions of the push rods 2, 3. These push rods 2, 3 actuate several bolts, not shown in the drawing, via gear/rack gearing or coulisse actuation.
The displacement of the push rods 2, 3 takes place via an inner or outer latch whose mandrel engages with a positive lock in a square opening 7 of the nut 8. Coaxially with the nut 8 a lever 9 is supported, which over a catch 10 participates in an up and down latch motion, but which with respect to the reverse rotation of the latch caused or assisted by spring force, is released in the basic, respective the middle position of the latch. The catch 10 is here designed as a nose 11 formed on the nut 8, which engages between two catch surfaces 12, 13 of a groove 14. When the latch is rotated back, thereby rotating back the nut 8 in the sense of arrow 15, the lever 9 is released. The lever 9 does not participate in this motion, but is only then pushed back into the position 9' (FIG. 2), when the
REFERENCES:
patent: 2101746 (1937-12-01), Manfredi
patent: 2650121 (1953-08-01), Schlage
patent: 3582119 (1971-06-01), Woodworth
patent: 4446707 (1984-05-01), Mullich et al.
Boucher Darnell M.
Dubno Herbert
Roto Frank Eisenwarenfabrik AG
Wilford Andrew
LandOfFree
Latch-operable multibolt lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Latch-operable multibolt lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latch-operable multibolt lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2377366