AU2020104484A4 - A lock and a method for selecting a rotation direction of a handle of the lock - Google Patents

Abstract

Disclosed herein is lock and a method for selecting a rotation direction of a handle of the lock. 0 -0 000

Description

A LOCK AND A METHOD FOR SELECTING A ROTATION DIRECTION OF A HANDLEOFTHELOCK.

Technical field

The disclosure herein generally relates to a lock and a method for selecting a rotation direction of a handle of the lock.

Background

Some locks, examples of which include but are not limited to some latches, night latches and some rim locks, have an outwardly biased ("sprung") latch bolt. An example of such a lock has a latch bolt operationally coupled to a rotatable handle for a user to retract the latch bolt. Examples of rotatable handles include but are not limited to a knob and a lever.

Generally, the rotatable handle of night latches and rim locks may be rotated in either direction to withdraw the latch. In certain lock applications, however, it is desirable to configure the lock such that the latch can be withdrawn when the handle is rotated in only one of clockwise and counter clockwise directions. A lock so configured may not be suitable for both right handed and left handed doors. Consequently:

• A lock configured for a door with one handing may not be suitable to be reinstalled on a door with the other handing; and • a lock smith may be required to stock locks with a handle that can only be rotated in one direction, and also stock other locks with a handle that can only be rotated in the other direction, which increases the amount of stock that needs to be kept.

Summary

A first aspect of the invention provides a lock comprising: a lock housing; a latch bolt outwardly biased and a latch bolt carriage operationally coupled thereto, wherein the latch bolt carriage is movably mounted for movement between a first position wherein the latch bolt is extended and a second position wherein the latch bolt is withdrawn; an actuator rotationally mounted within the lock housing for clockwise rotation and counter clockwise rotation, and operationally coupled to the latch bolt carriage for moving the latch bolt carriage from the first position to the second position; and an actuator stop movably mounted within the lock housing and movable to an actuator stop position and when so at the actuator stop position blocks one of a clockwise rotation of the actuator and a counter clockwise rotation of the actuator.

In an embodiment, the actuator stop when at the actuator stop position blocks the clockwise rotation of the actuator, and the actuator stop is movable to another actuator stop position and when so at the other actuator stop position blocks a counter clockwise rotation of the actuator. The actuator stop may be movable to a non-blocking position and when so at the non-blocking position blocks neither the clockwise rotation of the actuator nor the counter clockwise rotation of the actuator.

In an embodiment, the actuator comprises a stop engaging feature extending outwardly from a rotational axis of the actuator.

In an embodiment, the actuator comprises a cam and the latch bolt carriage comprises a cam follower arranged to follow the cam.

In embodiment, the actuator stop is rotationally mounted. Alternatively, the actuator stop is translationally mounted and is translatable into the actuator stop position.

A second aspect of the invention provides lock comprising: a lock housing; a latch bolt outwardly biased and a latch bolt carriage operationally coupled thereto, wherein the latch bolt carriage is movably mounted for movement between a first position wherein the latch bolt is extended and a second position wherein the latch bolt is withdrawn; an actuator rotationally mounted within the lock housing for a clockwise rotation and a counter clockwise rotation, and operationally coupled to the latch bolt carriage for moving the latch bolt carriage from the first position to the second position; and an actuator stop receiver within the lock housing and configured to receive an actuator stop such that the actuator stop when so received blocks one of a clockwise rotation of the actuator and a counter clockwise rotation of the actuator.

An embodiment comprises another actuator stop receiver configured to receive the actuator stop such that the actuator stop when so received by the other actuator stop receiver blocks a counter clockwise rotation of the actuator, wherein the actuator stop when so received blocks the clockwise rotation of the actuator.

The actuator may be rotatable clockwise and anticlockwise when neither the actuator stop receiver nor the other actuator stop receiver have so received the actuator stop. The actuator may comprise a stop engaging feature extending outwardly from a rotational axis of the actuator. The actuator may comprise a cam and the latch bolt carriage may comprise a cam follower arranged to follow the cam.

A third aspect of the invention provides a method for selecting a rotation direction of a handle of a lock in accordance with the disclosure above, the method comprising moving the actuator stop to the actuator stop position.

A fourth aspect of the invention provides a method of selecting a rotation direction of a handle of a lock in accordance with the disclosure above, the method comprising disposing the actuator stop at the actuator stop receiver.

In any of the above described aspects, when the latch bolt carriage is at the second position the latch bolt is withdrawn within the lock housing. The lock may be in the form of a rim lock wherein the lock housing comprises a rim lock housing. Alternatively, the locks of any of the above described aspects may be in the form of a mortice lock, or generally any suitable form of lock.

Any of the various features of each of the above disclosures, and of the various features of the embodiments described below, can be combined as suitable and desired.

Brief description of the figures

O Embodiments will now be described by way of example only with reference to the accompanying figures in which:

Figures 1 and 2 respectively show a front elevational view and a plan view of an embodiment of a lock in the form of a rim lock.

Figures 3 and 4 respectively show a front exploded view and a rear exploded view of the lock of figure 1.

Figure 5 shows a rear elevational view of the rim lock of figure 1 with some parts thereof removed, wherein a handle is in a neutral orientation and a latchbolt is extended.

Figure 6 is the same of figure 5, but the handle has been rotated clockwise (as viewed from the front of the lock) to withdraw the latchbolt.

Figure 7 is the same as figure 5, but the handle has been rotated anti-clockwise to withdraw the latchbolt.

Figures 8 and 9 are rear elevational and rear isometric views of the lock of figure 1, but the lock is configured to block a counter-clockwise rotation of the lock handle but not a clockwise rotation of the lock handle.

Figures 10 and 11 are the same as figures 8 and 9 respectively, but the handle has been rotated clockwise to withdraw a latchbolt.

Figures 12 and 13 are rear elevational and rear isometric views of the lock offigure 1, but the lock is configured to block a clockwise rotation of the lock handle but not a counter clockwise rotation of the lock handle.

Figures 14 and 15 are the same as figures 12 and 13 respectively, but the handle has been rotated counter-clockwise to withdraw the latchbolt.

Figures 16 shows a front elevational view another embodiment of a lock in the form of a rim lock.

Figures 17 and 18 shows a rear elevational view and a rear isometric view of the lock of figure 16 with some parts thereof removed, wherein a handle is in a neutral orientation, and the lock is configured to block a clockwise rotation of the handle but not a counter clockwise rotation of the handle.

Figures 19 and 20 are the same as figures 17 and 18, but the lock handle has been rotated counter clockwise to withdraw a latchbolt.

Figures 21 and 22 shows a rear elevational view and a real isometric view of the lock of figure 16 with some parts thereof removed, wherein a lock's handle is in a neutral orientation, and the lock is configured to block a counter clockwise rotation of the handle but not a clockwise rotation of the handle.

Figures 23 and 24 are the same as figures 21 and 22, but the lock handle has been rotated clockwise to withdraw the latchbolt.

Figures 25 shows a rear elevational view of the lock of figure 16 with some parts thereof removed, wherein a handle is in a neutral orientation, and the lock is configured to block neither a clockwise rotation of the handle nor a counter clockwise rotation of the handle.

Figure 26 is the same as figure 25, but the handle has been rotated counter clockwise to withdraw a latchbolt.

Figure 27 is the same as figure 25, but the handle has been rotated clockwise to withdraw a latchbolt.

Figures 28 shows a front elevational view of another embodiment of a lock in the form of a rim lock.

Figures 29 and 30 show a rear elevational view and a rear isometric view of the lock of figure 28 with some parts thereof removed, wherein a handle is in a neutral orientation, and the lock is configured to block a clockwise rotation of the handle.

Figures 31 and 32 are the same as figures 29 and 30, but the lock handle has been rotated counter clockwise to withdraw a latchbolt.

Figures 33 and 34 show rear elevational view and a rear isometric view of the lock of figure 28 with some parts thereof removed, wherein a handle is in a neutral orientation, and the lock is configured to block a clockwise rotation of the handle.

Figures 35 and 36 are the same as figures 33 and 34, but the lock handle has been rotated clockwise to withdraw the latchbolt.

Figures 37 shows a rear elevational view of the lock of figure 28 with some parts thereof removed, wherein a handle is in a neutral orientation, and the lock is configured to block neither a clockwise rotation of the handle nor a counter clockwise rotation of the handle.

Figure 38 is the same as figure 37, but the handle has been rotated clockwise to withdraw a latchbolt.

Figure 39 is the same as figure 38, but the handle has been rotated counter clockwise to withdraw a latchbolt.

Description of embodiments

Figures 1 and 2 respectively show a front elevational view and a plan view of a lock in the form of a rim lock, the lock being generally indicated by the figure 10. A lock 10 comprises a latch bolt 16 biased in an outwardly direction 28 with respect to lock housing 14. The outwardly direction is parallel to a rear face 30 of the lock 10 and towards one of two opposite sides 32, 41 of the lock 10.

Figures 3 and 4 respectively show a front exploded view and a rear exploded view of the lock 10, the figures also showing a mounting plate 12. In use, the mounting plate 12 is fastened to a face of a door and adjacent to the swingable edge thereof, and the lock 10 is fastened to the mounting plate 12. An alternative lock embodiment does not use a mounting plate 12, but does have lugs with through holes attached to the external corners of the housing 14 for door fasteners, for fastening the lock 10 to the door. The doors fasteners may be in the form of security screws, security bolts and nuts, or generally any suitable form of fastener.

The lock 10 comprises a latch bolt carriage 18 operationally coupled to the latch bolt 16. The latch bolt 16 is crimped onto a key 21 received within keyway 23 of the latch bolt 16. The latch bolt carriage 18 is movably mounted for movement between a first position wherein the latch bolt 16 is extended and a second position wherein the latch bolt 16 is withdrawn. The latch bolt carriage 18 is biased in the outwardly direction 28 by a biasing member 50 in the form of a torsion spring 50 disposed within lock housing 14. Figure 5 shows a rear elevational view of the lock 10 with rim cylinder lock cam 51 and mounting plate 12 removed, wherein the latch bolt carriage 18 movably mounted within the housing 14 and at the first position. Figures 6 and 7 show the same rear elevational view of the lock as figure 5, but with the latch bolt carriage 18 at the second position. Retaining plate 25 retains the latch bolt carriage 18 within housing 14.

The lock 10 comprises an actuator 20 rotationally mounted within housing 14 for clockwise rotation and counter clockwise rotation, and operationally coupled to the latch bolt carriage 18 for moving the latch bolt carriage 18 from the first position to the second position when rotated around an actuator rotation axis. The actuator 20 is operationally coupled to handle 64. Detent plate 17 comprises boss 27 that is received within aperture 29 of actuator 20, the detent plate 17 being attached to handle 64 by fasteners in the form of screws 31. Rotation of handle 64 is transmitted via boss 27 to the actuator 20. The actuator 20 is received by bearing 33 in the form of a plain rotational bearing disposed in the housing 14 and of bearing insert 35 in the form of a plate that is retained by latch bolt carriage 18 and fasteners 60. The actuator 10 comprises a first cam 43 and a second cam 45, which are respectively followed by first cam follower 47 and second cam follower 49 of the latch bolt carriage 18.

An actuator stop 84 in the form of an actuator rotation stop is movably mounted, in this embodiment rotationally mounted within the housing 14 and movable to an actuator stop position, shown in figures 8 to 11. Circular boss 39 extending from a face of the actuator stop 84 is received by bearing aperture 41. When the actuator stop 84 is at the actuator stop position shown in figures 8 to 11, the actuator stop 84 blocks a counter clockwise rotation of the actuator

20, as seen from the front of the lock 10. The actuator 20 comprises a stop engaging feature 37 in the form of a triangular extension extending outwardly from a rotational axis of the actuator. The actuator stop 84 is movable by way of a rotation to another actuator stop position shown in figures 12 - 15. When the actuator stop 84 is at the other actuator stop position, the actuator stop 84 blocks clockwise rotation of the actuator 20 as seen from the front of the lock 10. That is, the actuator stop 84 is movable by way of rotation into and out of position for stopping a rotation of the actuator 20.

The actuator stop 84 is movable to a non-blocking position shown in figure 5 - 7. When the actuator stop 84 is at the non-blocking position, the actuator stop 84 blocks neither clockwise rotation of the actuator 20 nor counter clockwise rotation of the actuator 20, enabling retraction of the latch bolt 16 by rotating the handle 64 in either clockwise or counter clockwise directions. The actuator stop 84 can be moved by way of rotation between the non-blocking position, the actuator stop position, and the other actuator stop position.

A detent spring 62 cooperates with a detent plate 66 fastened with at least one detent plate fastener 68, is attached to the actuator 20 and configured to hold the actuator 20 in at least one of a clockwise position or an anticlockwise position and so maintain the latch bolt 16 in a withdrawn position. The detent sprint 62 rides over perimeter extensions 63.

The lock 10 comprises lock cylinder 70 and lock cylinder cam 72 fastened thereto by cam fasteners 74 are operable for deadlocking the lock. The lock 10 comprises anti-carding componentry 74 - 78.

In use, the mounting plate 12 is fastened to a face of a door - generally the inside face - using fasteners in the form of screws or bolts, or generally any suitable form of fastening, for example a rivet or adhesive. The lock 10, in this embodiment specifically the housing 14, and the mounting plate 12 are cooperatively configured for fastening the housing 14 to the mounting plate 11. The housing 14 is configured to slidingly receive tags 82. Mounting plate fasteners 84 are inserted in fastener apertures 85 of the housing 14 and engage threads 82. The lock's internal assembly can be accessed by removing the mounting plate fasteners 84, slidingly disengage the tags 82, separating the lock 10 from the mounting plate 12, and removing retaining plate 25.

Figures 16 shows a front exploded view of another embodiment of a lock 100 in the form of a rim lock, wherein parts similar or identical in form and/or function to those in figures 1 to 15 are similarly numbered. The lock 200 comprises a latch bolt 16 outwardly biased and a latch bolt carriage 18 operationally coupled thereto, wherein the latch bolt carriage 18 is movably mounted for movement between a first position wherein the latch bolt 16 is extended and a second position wherein the latch bolt 16 is withdrawn. The lock 100 comprises an actuator 20 rotationally mounted for clockwise rotation and counter clockwise rotation, and operationally coupled to the latch bolt carriage 18 for moving the latch bolt carriage 18 from the first position to the second position. The lock 100 comprises an actuator stop 84 translationally mounted and translatable into the actuator stop position shown in figures 17 to 20. When in the actuator stop position, the actuator stop 84 blocks a counter clockwise rotation of the actuator 20, stopping withdrawal of the latch bolt. As seen in figures 19 and 20, for example, the actuator stop 84 comprises spaced apart forward projecting interference members 102 and 104 each in the form of a raised surface portion. The interference members 102 and 104 are on opposite sides (above and below) of a lock centre line, defining therebetween a passageway 106 for through which the stop engaging feature 37 can pass when translated between the stop position and the other stop position. The interference members 102 and 104 are also spaced apart in a direction orthogonal to the outward direction 28. When the actuator stop 84 is at the actuator stop position, one of the interference members 104 is arranged to interfere with the stop engaging feature 37, and so interfere with the counter clockwise rotation as seen from the front. The actuator stop 84 is translatable to another stop position shown in figure 21 to 24. When in the other actuator stop position, the actuator stop 37 blocks a clockwise rotation of the actuator as seen from the front, wherein the other interference member 102 is arranged to interfere with the stop engaging feature 37.

The actuator stop 84 is movable to a non-blocking position shown in figures 25 - 27. When the actuator stop 84 is at the non-blocking position, the actuator stop 84 blocks neither clockwise rotation of the actuator 20 nor counter clockwise rotation of the actuator 20, enabling retraction of the latch bolt 16 by rotating the handle 64 in either clockwise or counter clockwise directions.

Figure 28 shows a front exploded view of yet another embodiment of a lock 200 in the form of a rim lock, wherein parts similar or identical in form and/or function to those in figures 1 to 15 are similarly numbered. The lock 200 comprises a latch bolt 16 outwardly biased and a latch bolt carriage 18 operationally coupled thereto, wherein the latch bolt carriage 18 is movably mounted for movement between a first position wherein the latch bolt 16 is extended and a second position wherein the latch bolt 16 is withdrawn. The lock 200 comprises an actuator 20 rotationally mounted for clockwise rotation and counter clockwise rotation. The actuator 20 is operationally coupled to the latch bolt carriage 18 for moving the latch bolt carriage 18 from the first position to the second position. As seen infigure 37, the lock 200 comprises an actuator stop receiver 204 configured to receive an actuator stop 206 - as shown in figures 29 to 32 - in the form of an insert such that the actuator stop 206 when so received blocks one of clockwise rotation of the actuator and counter clockwise rotation of the actuator. The lock comprises another actuator stop receiver 202 configured to receive the actuator stop 208 such that the actuator stop 208 when so received - as shown in figures 33 to 36 - by the other actuator stop receiver 202 blocks the other one of the clockwise and counter clockwise rotation of the actuator 20. The actuator stop receivers are in the form of threaded inside walls of the 35. The actuator 20 comprises a rectangular stop engaging feature extending outwardly from a rotational axis of the actuator. As shown in figures 37 to 39, the actuator 20 is rotatable clockwise and anticlockwise when neither the actuator stop receiver 204 nor the other actuator stop receiver 202 have so received the actuator stop.

Now that embodiments have been described, it will be appreciated that some embodiments may have some of the following advantages:

• Which direction the handle can be rotated to withdraw the latch can be selected by reconfiguring the lock, allowing the lock to be removed from a door with a first handing and reinstalled on another door of a second handing, and stock held by a locksmith may be reduced.

Variations and/or modifications may be made to the embodiments described without departing from the spirit or ambit of the invention. For example:

• The latch bolt may be fastened to the carriage with adhesive.

• The latch bolt may be integral with the carriage. • The latch bolt may not be attached to the latch bolt carriage. The latch bolt may alternatively be operationally coupled to the latch bolt carriage by a lost-motion mechanism for an anti-carding function, for example. • The latch bolt and latch bolt carriage may be operationally coupled by being integral with each other (e.g. a single piece of metal). The latch bolt may be operationally coupled to the latch bolt carriage in generally any suitable way. • Two or three of the actuator, detent plate and handle may be integral. • Each of the forward projecting interference members may comprise an attached fastener in the form of, for example, a screw, a pin or generally have any suitable form. • The inserts may generally take any suitable form, for example a pin, clip or bolt. • Embodiments may not comprise lock cylinders, detent mechanisms, rim cylinder lock cams, or anti-carding componentry.

• The handle may take the form of a knob, lever or generally any suitable form. • The lock may take the form of a mortice lock, an electronic lock, or generally any suitable form of lock. • The latch bolt carriage may be mounted on at least one guide rail.

• The latch bolt carriage may not be slidingly mounted. For example, the latch bolt carriage in an alternative embodiment rolls on bearings. In an alternative embodiment, another cam is intermediately coupled between the latch bolt carriage (as it is in the illustrated embodiments) and the latch bolt such that the latch bolt is rotated (i.e. swung) into and out of the cavity. • Fasteners other than screws may be used as suitable and appropriate, for example a bolt, rivet or generally any suitable form of fastener. Welds or adhesives, for example may also be used as suitable and appropriate. • The stop engagers may have any suitable configuration.

The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. Reference to a feature disclosed herein does not mean that all embodiments must include the feature.

Prior art, if any, described herein is not to be taken as an admission that the prior art forms part of the common general knowledge in any jurisdiction.

In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, that is to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

Claims (14)

Claims

1. A lock comprising: a lock housing; a latch bolt outwardly biased and a latch bolt carriage operationally coupled thereto, wherein the latch bolt carriage is movably mounted for movement between a first position wherein the latch bolt is extended and a second position wherein the latch bolt is withdrawn; an actuator rotationally mounted within the lock housing for clockwise rotation and counter clockwise rotation, and operationally coupled to the latch bolt carriage for moving the latch bolt carriage from the first position to the second position; and an actuator stop movably mounted within the lock housing and movable to an actuator stop position and when so at the actuator stop position blocks one of a clockwise rotation of the actuator and a counter clockwise rotation of the actuator.

2. A lock defined by claim 1 wherein the actuator stop when at the actuator stop position blocks the clockwise rotation of the actuator, and the actuator stop is movable to another actuator stop position and when so at the other actuator stop position blocks a counter clockwise rotation of the actuator.

3. A lock defined by claim 2 wherein the actuator stop is movable to a non-blocking position and when so at the non-blocking position blocks neither the clockwise rotation of the actuator nor the counter clockwise rotation of the actuator.

4. A lock defined by any one of the preceding claims wherein the actuator comprises a stop engaging feature extending outwardly from a rotational axis of the actuator.

5. A lock defined by any one of the preceding claims wherein the actuator comprises a cam and the latch bolt carriage comprises a cam follower arranged to follow the cam.

6. A lock defined by any one of the preceding claims wherein the actuator stop is rotationally mounted.

7. A lock defined by any one of the claims 1 to 4 wherein the actuator stop is translationally mounted and is translatable into the actuator stop position.

8. A lock comprising: a lock housing; a latch bolt outwardly biased and a latch bolt carriage operationally coupled thereto, wherein the latch bolt carriage is movably mounted for movement between a first position wherein the latch bolt is extended and a second position wherein the latch bolt is withdrawn; an actuator rotationally mounted within the lock housing for a clockwise rotation and a counter clockwise rotation, and operationally coupled to the latch bolt carriage for moving the latch bolt carriage from the first position to the second position; and an actuator stop receiver within the lock housing and configured to receive an actuator stop such that the actuator stop when so received blocks one of a clockwise rotation of the actuator and a counter clockwise rotation of the actuator.

9. A lock defined by claim 8 comprising another actuator stop receiver configured to receive the actuator stop such that the actuator stop when so received by the other actuator stop receiver blocks a counter clockwise rotation of the actuator, wherein the actuator stop when so received blocks the clockwise rotation of the actuator.

10. A lock defined by claim 8 wherein the actuator is rotatable clockwise and anticlockwise when neither the actuator stop receiver nor the other actuator stop receiver have so received the actuator stop.

11. A lock defined by any one of the claims 8 to 10 wherein the actuator comprises a stop engaging feature extending outwardly from a rotational axis of the actuator.

12. A lock defined by any one of the claims 8 to 11 wherein the actuator comprises a cam and the latch bolt carriage comprises a cam follower arranged to follow the cam.

13. A method for selecting a rotation direction of a handle of a lock defined by any one of the claims 1 to 7, the method comprising moving the actuator stop to the actuator stop position.

14. A method of selecting a rotation direction of a handle of a lock defined by any one of the claims 8 to 12, the method comprising disposing the actuator stop at the actuator stop receiver.

15. A lock defined by any one of the claims 1 to 12 wherein when the latch bolt carriage is at the second position the latch bolt is withdrawn within the lock housing.

16. A lock defined by any one of the claims I to 12 and 15 in the form of a rim lock wherein the lock housing comprises a rim lock housing.

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