This disclosure relates generally to door locks and more specifically to multipoint locks and latch assemblies for swinging or hinged entry door panels.
Swinging doors having multipoint locking mechanisms are more secure than doors with single deadbolts. This is because a multipoint lock assembly employs multiple bolts to secure a door in its locked configuration. Multipoint locks can include a deadbolt that extends from the unhinged side of the door into a side jamb, an upper shoot bolt that extends from a top edge of the door into a header, and a lower shoot bolt that extends from a bottom edge of the door into a threshold. Although common in commercial door systems, multipoint locks are making more inroads into residential construction.
Multipoint lock assemblies for residential entry door applications typically require hardware such as handle sets, thumb turns, escutcheons, and the like that are unique to a particular brand or style of lock mechanism. Hardware for multipoint locks usually is ordered from a manufacturer or distributor at the same time as the lock assembly because the hardware is unique to the lock assembly. Retail availability of compatible multipoint lock hardware for a particular lock can be limited. Traditional cylindrical lock hardware is not designed to interface with multipoint locks and, while widely available in a variety of styles, is not an option for use with traditional multipoint lock assemblies.
A need exists for a multipoint lock system for hinged entry doors that is compatible with traditional cylindrical lock hardware so that choices and availability of hardware are greatly increased. A need also exists for such a multipoint lock system that is robust, reliable, smoothly operating, and resistant to tampering. It is to the provision of a multipoint lock system that meets these and other needs that the present disclosure is primarily directed.
Briefly described, a multipoint lock system for a swinging entry door is disclosed. The lock system is compatible with and can be operated by traditional and widely available cylindrical lock hardware. A rotary or cylindrical latch and knob or handle is used to operate a main door latch for normal opening and closing of the door. A traditional rotary or cylindrical deadbolt activator is used to extend and retract a deadbolt and upper and lower shoot bolts simultaneously. The result is a secure multipoint locking system with a first point being a deadbolt extending into a door jamb or mullion for example, a second point being an upper shoot bolt extending into a header, and a third point being a lower shoot bolt extending into a threshold. Additional lock points and bolts can be integrated if desired. The system incorporates deadlatch mechanisms to prevent forced back-drive of the latch bolt when the door is closed and to prevent forced back-drive of the deadbolt and shoot bolts when the door is closed and locked.
Thus, a multipoint lock system is now disclosed that is compatible with widely available traditional cylindrical latch and deadbolt hardware, that retains all the functions and provides the security of a robust multipoint locking system, and that provides other advantageous functionality. These and other features, aspects, and advantages of the multipoint lock system of this invention will become clear upon review of the detailed description set forth below taken in conjunction with the accompanying drawing figures, which are briefly described as follows.
According to an embodiment of the present disclosure, a lock mechanism includes a latch operating mechanism and a latch. The lock mechanism is configured to be disposed within a door panel. The latch includes an inner portion and an outer portion. The inner portion is engaged by the latch operating mechanism such that the latch operating mechanism is capable of retracting the latch from an extended position in which the outer portion is configured to extend from an edge of the door panel and a retracted position in which the outer portion is substantially within the edge of the door panel. The latch has a left-hand swing orientation in which the latch is configured to operate with a left-handed door and a right-hand swing orientation in which the latch is configured to operate with a right-handed door. The latch being capable of transitioning between the left-hand swing orientation and the right-hand swing orientation by rotating the latch 180 degrees about a longitudinal axis thereof with the latch and the latch operating mechanism installed within a door panel. In the left-hand swing orientation, the latch is configured to interact with a door jamb or a strike plate to retract from the extended position and to return to the extended position when the left-handed door is closed to maintain the door panel in a closed position thereof with the respective left- or right-handed door.
In embodiments, the latch is configured to transition between the left-hand swing orientation and the right-hand swing orientation without disassembly of the lock mechanism or removal of the lock mechanism from the door panel. The latch mechanism may include an adjustment slot that is defined in the outer portion. The adjustment slot may be configured to be engaged to rotate the latch between the left-hand swing orientation and the right-hand swing orientation.
In some embodiments, the lock mechanism includes a latch retainer that is configured to be disposed about and receive the outer portion of the latch therethrough. The latch retainer may be configured to secure the latch in the left-hand swing orientation and the right-hand swing orientation. The lack mechanism may include a base and a first retainer spring that projects outwardly around the base. The first retainer spring may bias a retainer spring tab thereof outward such that the retainer spring tab is configured to be selectively nested in a notch to secure the latch in one of the left-hand swing orientation or the right-hand swing orientation.
In particular embodiments, the lock mechanism includes a mortise box that is configured to be disposed within a door panel, the latch operation mechanism may be disposed within the mortise box. The mortise box having an edge surface that is configured to be disposed along the edge of the door panel. The edge surface may include a latch opening defined therethrough. The latch may extend through the latch opening. The edge surface may define a groove around the latch opening, a first notch, and a second notch. The first and second notches may extend outward from the groove with the first notch being opposite the second notch. The retainer spring tab may be nested in the first notch in the left-hand swing orientation and in the second notch in the right-hand swing orientation. The lock mechanism may include a face plate secured over the edge surface of the mortise box such that the face plate retainer the latch retainer in the groove. When the latch is between the left-hand swing orientation and the right-hand swing orientation the retainer spring tab may be disposed within the groove. Upon rotation of the latch from the left-hand swing orientation or the right-hand swing orientation, the retainer spring tab may engage walls defining the respective notch to urge the retainer spring tab inward against bias of the first retainer spring such that the retainer spring tab is disposed within the groove as the latch is rotated between the left-hand swing orientation and the right hand-swing orientation.
In certain embodiments, a door panel assembly includes a door panel having a hinged edge, a lock edge, a top edge, a bottom edge, a first face, and a second face. The door panel assembly also includes a lock mechanism as described herein disposed between the first and second faces adjacent the lock edge.
In another embodiment of the present disclosure, a door panel assembly includes a door panel, a latch operating mechanism, and a latch. The door panel including a hinged edge, a lock edge, a top edge, a bottom edge, a first face, and a second face. The hinged edge is configured to be secured by hinges to a door frame as a left-handed swing door or a right-handed swing door. The door panel including a mortise pocket that is defined between the first and second faces adjacent the lock edge. The latch including an outer portion and an inner portion. The latch has an extended position in which the outer portion extends from the lock edge and a retracted position in which the outer portion is disposed substantially within the door panel. The outer portion terminates in an angled surface that is configured to engage a door jamb or a strike plate to transition the latch from the extended position to the retracted position as the door panel is swung to a closed position. The latch having a left-hand swing orientation in which the angled surfaces faces the first face of the door panel and a right-hand swing orientation in which the angled surfaced faces the second face of the door panel. The latch rotatable about a longitudinal latch axis to transition the latch between the left-hand swing orientation and the right-hand swing orientation which the latch and the latch operating mechanism installed within the mortise pocket.
In embodiments, the lock mechanism includes a mortise box disposed within the mortise pocket of the door panel. The lock mechanism may be disposed within the mortise box. The outer portion may have a first flat and a second flat that extend parallel to the longitudinal latch axis. The first flat having a length greater than the second flat in a direction parallel to the longitudinal latch axis. The first flat may be opposite the second flat. The angled surface may extend from an outer terminal edge of the first flat to an outer terminal edge of the second flat. The lock mechanism may further include a latch retainer that is disposed abut the outer portion of the latch and rotatably fixed relative to the latch. The latch retainer may include a retainer spring tab that is nested in a first notch of the mortise box when the latch is in the left-hand swing orientation and the retainer spring tab nested in a second notch of the mortise box when the latch is in the right-hand swing orientation, the first notch opposite the second notch.
In some embodiments, the inner portion of the latch includes a latch shaft and a latch button. The latch shaft may extend along the longitudinal latch axis of the latch into the mortise box and terminating in the latch button. The latch operating mechanism may include a latch drive and a pair of legs that extend from the latch drive towards the latch button. Each leg may have a retractor finger that is engaged with the latch button and be configured to retract the latch button such that the latch is retracted. The latch button may remain engaged by the retractor fingers as the latch button is rotated bout the longitudinal axis of the latch. The latch may be configured to transition between the left-hand swing orientation and the right-hand swing orientation without disassembly of the lock mechanism or removal of the lock mechanism form the door panel.
In certain embodiments, the door panel assembly further includes a deadbolt, a first auxiliary retainer, a second auxiliary retainer, and a deadbolt operating mechanism. The deadbolt has an extended position in which the deadbolt extends from the lock edge of the door panel and a retracted position in which the deadbolt is disposed substantially within the door panel. The first auxiliary retainer is disposed about the deadbolt and the latch. The first auxiliary having an extended position in which the first auxiliary retainer extends from the top edge or the lock edge of the door panel and a retracted position in which the first auxiliary retainer is disposed substantially within the door panel. The second auxiliary retainer is disposed below the deadbolt and the latch. The second auxiliary retainer having an extended position in which the second auxiliary retainer extends from the bottom edge or the lock edge of the door panel and a retracted position in which the second auxiliary retainer is disposed substantially within the door panel. The deadbolt operating mechanism is configured to transition the deadbolt, the first auxiliary retainer, and the second auxiliary retainer between the respective extended and retracted positions in concert with one another. The deadbolt operating mechanism including a four bar linkage. The deadbolt operating mechanism configured to increase a rotational force applied to the deadbolt operating mechanism to reduce a force required to extend the deadbolt, the first auxiliary retainer and the second auxiliary retainer is decreased. In the extended position of each of the deadbolt, the first auxiliary retainer, and the second auxiliary retainer, the four bar linkage is in a past center configuration that prevents back driving of the four bar linkage from each of the deadbolt, the first auxiliary retainer, and the second auxiliary retainer. The deadbolt operating mechanism may also include a drive lever, a driver linkage, an upper drive arm, and a lower drive arm. The four bar linkage may be formed by an upper drive link, a lower drive link, an upper scissor link, and a lower scissor link. The driver lever is coupled to a first end of the driver linkage. A second end of the driver linkage that is opposite the first end that is coupled to a first end of the upper drive link. The first end of the lower drive link that is coupled to the upper drive link that is adjacent the first end thereof. The upper drive arm is coupled to a second end of the upper drive link is opposite the first end thereof. The first end of the upper scissor link is coupled to the upper drive link adjacent the second end thereof. The lower drive arm is coupled to a second end of the drive link that is opposite the first end thereof. The first end of the lower scissor link is coupled to the lower drive link adjacent the second end thereof. A second end of each of the upper and lower scissor links are coupled to on another. The upper drive arm is operably coupled to the first auxiliary retainer such that the first auxiliary retainer transitions between the extended and retracted positions thereof in response to translation of the upper drive arm along a longitudinal axis thereof. The lower drive arm is operably coupled the second auxiliary retainer such that the second auxiliary retainer transitions between the extended and retracted position thereof in response to translation of the lower drive arm along a longitudinal axis thereof. The deadbolt is operably coupled to the second end of the lower drive link. The driver lever and the driver linkage may increase a rotation force applied to the driver lever such that a force required to extend the deadbolt, the first auxiliary retainer, and second auxiliary retainer is decreased.
In particular embodiments, the door panel assembly includes a deadbolt, a first auxiliary retainer, a drive rod, and a deadbolt operating mechanism. The deadbolt has an extended position in which the deadbolt extends from the lock edge of the door panel and a retracted posing in which the deadbolt is disposed substantially within the door panel. The first auxiliary retainer is disposed above the deadbolt and the latch. The first auxiliary has an extended position in which the first auxiliary retainer that extends from the top edge or the lock edge of the door panel and a retracted position in which the first auxiliary retainer is disposed substantially within the door panel. The drive rod has a first end that is operably coupled to the first auxiliary retainer and a second threaded end opposite the first end. The deadbolt operating mechanism is configured to transition the deadbolt and the first auxiliary retainer between the respective extended and retracted positions in concert with one another. The deadbolt operating mechanism includes a drive arm that extends towards the first auxiliary retainer. The drive arm including a drive rod dock that includes a tapered guide and a threaded bore. The tapered guide is configured to guide a threaded end of the drive rod into the threaded bore.
In another embodiment of the present disclosure, a method of rehanding a lock mechanism includes engaging a latch of a lock mechanism with the lock mechanism fully installed in a door panel with the latch in one of a left-hand swing orientation or a right-hand swing orientation and rotating the latch 180 degrees about a longitudinal axis of the latch to transition the latch to the other of the left-hand swing orientation or the right-hand swing orientation with the lock mechanism remaining fully installed in the door.
Further, to the extent consistent, any of the embodiments or aspects described herein may be used in conjunction with any or all of the other embodiments or aspects described herein
Various aspects of the present disclosure are described hereinbelow with reference to the drawings, which are incorporated in and constitute a part of this specification, wherein
The present disclosure will now be described more fully hereinafter with reference to example embodiments thereof with reference to the drawings in which like reference numerals designate identical or corresponding elements in each of the several views. These example embodiments are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Features from one embodiment or aspect can be combined with features from any other embodiment or aspect in any appropriate combination. For example, any individual or collective features of method aspects or embodiments can be applied to apparatus, product, or component aspects or embodiments and vice versa. The disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. As used in the specification and the appended claims, the singular forms “a,” “an,” “the,” and the like include plural referents unless the context clearly dictates otherwise. In addition, while reference may be made herein to quantitative measures, values, geometric relationships or the like, unless otherwise stated, any one or more if not all of these may be absolute or approximate to account for acceptable variations that may occur, such as those due to manufacturing or engineering tolerances or the like.
With reference to
An upper drive bar 46 is coupled to the deadbolt operating mechanism 34 at its lower end and is threaded to an upper drive rod 54 at its upper end. An upper drive bar dock 57 helps guide the threads of the upper drive rod 54 into a threaded opening of the upper drive bar 46 when the drive rod 54 is installed. Likewise, a lower drive bar 47 is coupled to the deadbolt operating mechanism 34 at its upper end and is threaded to a lower guide rod 56 at its lower end. A lower guide bar dock 58 helps guide the threads of the lower drive rod 56 into a threaded opening of the lower drive bar 47 when the drive rod 56 is installed.
The deadbolt 39 of the mechanism 34 is pivotally attached to the mortise box 42 via pivot pin 51 so that the deadbolt 39 can pivot from its retracted position shown in
A retractor bar has legs 61 that straddle the latch drive 43. The retractor bar terminates on the left in
A latch tension arm 67 has a lower portion pivotal about a pivot pin and an upper portion that bears against tensioning cam 66 of the main latch 37. The latch tension arm 67 is yieldably biased into engagement with the tensioning cam 66 by an arm 68 of a torsion spring cradled in a spring holder 71. The spring traveler 72 can be adjusted to the right or left by turning a captured adjustment screw 69 threaded through a traveler 72 coupled to the spring holder 71. The adjustment screw 69 is accessible through an adjustment port in the face plate of the assembly as shown. Adjustment of the spring holder 71 to the left increases the tension of the spring on the tension arm 67 and adjustment to the right decreases the tension. The tension arm 67 yieldably urges the main latch 37 to its extended position. Adjusting the tension spring therefore adjusts the amount of force needed to move the main latch 37 to its retracted position. Thus, the main latch 37 tension can be adjusted so that a door closes and latches smoothly regardless of the size and weight of the door panel.
Referring to
The deadlatch button 38 is in its fully extended position as shown in
Referring to
In this position of the deadlatch arm 73, the bottom section of the deadlatch arm 73 resides directly behind the latch shaft button 64. Any effort to force the main latch 37 into the door and out of the latch pocket when the door is closed causes the latch shaft button 64 to engage the bottom section of the deadlatch arm 73 thereby preventing further inward movement. As a result, forced back-drive of the main latch 37 by a would-be intruder is prevented when the door panel is closed whether or not the door knob is locked and whether or not the door is dead bolted.
However, when the door knob is unlocked and rotated, the retractor bars 61 begin to move to the left in
With additional reference to
The main latch 37 is rotatable from a left-hand swing orientation to a right-hand swing orientation to correspond with the swing of a door panel 21 with which the assembly of this invention is used. To accomplish such an adjustment, a screw driver or other blade-like object is inserted into the adjustment slot 40 and twisted. This causes the spring tabs 89 to dislodge from their detents 92 allowing the main latch 37 and the latch retainer 87 to rotate as indicated by arrows 93 (
With continued reference to
Moving up from the main latch 37 assembly,
Lower drive bar link 98 is pivotally coupled at its right end in
Deadbolt rack 111 is formed on the upper end of lower drive bar 47. Deadbolt 112 is pivotally coupled to the mortise box 42 and is rotatable about a rotation axis 116. The deadbolt 112 is formed with a deadbolt pinion 113 that partially surrounds the rotation axis 116. Teeth of the deadbolt pinion mesh with the teeth of the deadbolt rack 111. It will thus be seen that when the lower drive bar 47 moves in a downward direction in
Since the joining of the upper drive rod and the upper drive bar is not accessible or visible during the attaching operation, the upper end of the upper drive bar 46 is formed with an upper drive bar dock 57. The upper drive bar dock 57 has walls that taper inwardly on all sides toward a threaded bore to which the threaded end 55 of the upper drive rod 54 is attached. Thus, the threaded end 55 of the upper drive rod 54 is guided into the threaded bore at the top of the upper drive bar 46. Upward movement of the upper drive bar 46 thereby causes the upper drive rod 54 to move up and vice versa.
The upper end of lower drive bar link 98, being pivotally connected to the upper drive bar link 97, also has been driven to the left as shown. The upper and lower scissor arms 107 and 108 have spread apart to accommodate the movement of the upper and lower drive bar links 107 and 108. The ultimate result of these coordinated movements is that the upper end of upper drive bar link 97 has moved up and the lower end of the lower drive bar link has moved down. This in turn has moved the upper drive bar 46 up as a result of pin 103 riding in slot 102 (arrow A1) and has moved the lower drive bar 47 down as a result of a pin (not visible) riding in slot 99 (arrow A2).
Upward movement of upper drive bar 46 also has driven upper drive rod 54 up to extend the upper shoot bolt 31 into the header of an entryway. Likewise, downward movement of lower drive bar 47 has driven the lower drive bar 56 down to extend the lower shoot bolt of assembly 32 into the threshold of an entryway. Operation of the upper and lower shoot bolts themselves is described in more detail below.
Downward movement of the lower drive bar 47 also has caused the deadbolt rack 110 to move down, which has, through engagement with the deadbolt pinion, rotated the deadbolt 112 outwardly as indicated by arrow 119. Coordinated movement of the deadbolt and shoot bolts is illustrated by arrows in
A unique aspect of the mechanism 34 is that once it is locked and dead bolted, neither the deadbolt nor the shoot bolts can be forced by a would-be intruder to their retracted positions with a blade or other tool. This is because, when the mechanism is locked and dead bolted as shown in
a illustrate the configuration and operation of the upper shoot bolt assembly 32 and these figures will be referenced together as a group. The upper shoot bolt assembly 32 is mounted in a mortise formed in the top corner of the door panel 21 at the unhinged edge. The assembly 32 includes a main body 122 and a cover plate 122a. A guide barrel 123 is rotatably mounted in the main body 122 and can be selectively rotated between indexed orientations. Indexing of the guide barrel 123 is facilitated by rotational position notches 131 (
A hexagonal sleeve 126 is formed through the guide barrel 123 and is offset relative to the central axis of the guide barrel as perhaps best shown in
Rotation of the shoot bolt 124 rotates the guide barrel 123 between its indexed positions. Since the hexagonal sleeve 126 is offset from the central axis of the guide barrel, such rotation adjusts the position of the upper shoot bolt between the two faces of the door panel. This allows precise positioning of the shoot bolt to accommodate any misalignment between the upper shoot bolt 124 and the shoot bolt receiving hole in a shoot bolt strike plate (not shown) into which the shoot bolt extends. As a result, adjustment of the closed and locked position of the door panel at its upper edge is easily accomplished by simple rotation of the upper shoot bolt and guide barrel to the appropriate indexed position.
Lower shoot bolt assembly 133 comprises a fixed housing 134 terminating at its lower end in a mounting plate (136), which fits in a mortise formed in the bottom edge of a door panel. A drive housing 137 is disposed in the fixed housing 134 for axial movement therealong and is attached at its top end to the bottom end of lower drive rod 56. Vertical movement of the drive rod 56 causes corresponding axial movement of the drive housing 137 within the fixed housing 134. A gear rack 138 is formed along one side of the fixed housing 134. A drive gear 139 is rotatably mounted on an axle 141 within the drive housing 137. The teeth of the drive gear 139 engage the gear rack 138. It will thus be seen that axial movement of the drive housing 137 in the fixed housing 134 causes the drive gear 139 to rotate about axle 141. The axle 141 extends through opposed slots 142 in the fixed housing 134 to guide axial movement of the drive housing 137.
As shown in
Operation of the lower shoot bolt assembly is illustrated in
During this movement of the drive housing, the drive gear 139 is rotated in a counterclockwise direction by engagement with the gear rack 138 of the fixed housing. This, in turn, forces the drive link 144 downwardly, which moves the lower shoot bolt 56 to its extended locked position. However, the lower shoot bolt 56 has moved a distance equal to the length of slot 143 as a consequence of the drive gear and drive link interaction. This distance is greater than the length of travel of the drive housing 137. Accordingly, a greater throw is imparted to the lower shoot bolt than would be provided by a direct connection to the deadbolt drive. The high throw is desirable and ensures a more secure door panel when the multipoint locks are engaged.
The deadbolt mechanism 34 detailed above is shown with a deadbolt 39 that extends from the unhinged edge, an upper shoot bolt 31 that extends from the top edge, and a lower shoot bolt 32 that extends from the bottom edge; however, in some embodiments, the deadbolt mechanism 34 may include a deadbolt, a first auxiliary latch, and a second auxiliary latch that each extend from the unhinged edge in a manner similar to the deadbolt with the first auxiliary latch above the deadbolt and the second auxiliary latch below the deadbolt and a main latch.
While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Any combination of the above embodiments is also envisioned and is within the scope of the appended claims. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope of the claims appended hereto.
This application claims priority to, and benefit of, U.S. Provisional Patent Application Ser. No. 62/841,281, filed May 1, 2019, the entire contents of which are hereby incorporated by reference.
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Number | Date | Country | |
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Child | 16862684 | US |