KR20080095901A - Mortice lock assembly - Google Patents

Abstract

This invention relates to a mortice lock assembly including a housing (1, 2) with a bolt (8) mounted on the housing for pivotal movement relative thereto. A drive means (19) for driving the bolt (8) relative to the housing (1, 2). A key operated actuator (9) for operating the drive means (19) and biasing means (29) acting on the drive means (19) to urge the bolt towards either a retracted or extended position.

Description

Mortis lock assembly {MORTICE LOCK ASSEMBLY}

The present invention relates to a mortise lock assembly having a bolt that is movable between an operating position and a non-operating position. More preferably, the bolt is of a type mounted on the housing for pivotal movement between the non-operating position where the bolt is substantially in the housing and the operating position where the bolt protrudes from the housing. Bolt assemblies of the aforementioned kind are often referred to as swing bolts. Hereinafter, the present invention will be described with reference to swing bolts for convenience.

The mortis lock assembly is in a mortis cavity formed in a hinged door panel or sliding door panel so that the bolt can protrude into a strike or similar member disposed in the associated door jamb when the bolt is in the operating mode. Can be deployed. If the door is a wood door, the mortis cavity can be chiseled or routed out from the leading edge of the door. Alternatively, the door can be formed from a hollow metal frame, in which case the mortise cavity is created by forming a hole in the leading edge of the door frame.

Swing bolts typically have a pivoting end that is pivotally mounted on the housing and a free end for placement in strike when in the operating position. When the swing bolt is used with the hinge door, the door stops moving from the closed position by the vertical face of the swing bolt free end disposed adjacent to the vertical face of the strike. When the lock assembly is used with a sliding door, a free end of the swing bolt is typically formed with hooks or beaks for placement behind catch elements formed in the strike such that the door stops moving from the closed position. The lock assembly also has deadlocking means for holding the swing bolt in the operating position, which can suppress unintended forces that cause the swing bolt to move out of the operating position.

A problem associated with lock assemblies with swing bolts is that safety can be compromised if the free end of the swing bolt cannot be placed in the strike. The free end of the bolt cannot be placed in the strike if the swing bolt does not reach the operating position. Often, the bolt is moved by the operation of a key operated cylinder, the cam of which is engaged with the swing bolt through the lost motion means. The lost motion means causes the key to rotate approximately 180 °, while the swing bolt moves only 90 ° relative to the operating position. The key must be rotated 0 ° to 180 ° to move the bolt to the operating position and reversed to 0 ° so that the key can be removed from the cylinder lock. However, this type of lost motion means allows the key to be removed from the cylinder lock without the bolt reaching the operating position. This provides limited stability when installed in the hinge door, while the lock assembly cannot keep the door in the closed position unless the hook is placed behind the catch of the strike when installed in the sliding door. Furthermore, deadlocking may also be constrained if the bolt cannot reach the operating position and the swing bolt is forced to move back to the non-operating position.

In the present application, efforts have been made in advance to provide a lock assembly that solves the above problems by utilizing a torsion spring-type biasing means acting between the bolt and the drive means for pressing the bolt towards an operating or non-operating position. lost. Details of the assembly are described in AU 55664/80. The lock assembly described above utilized a lost motion system that needed to rotate the key over 360 ° to move the bolt to the operating position. This allows the key to be removed from the cylinder lock without rotating the key back from the intermediate position. It should be understood by the applicant that the lock assembly has been improved, in particular the biasing means could be improved. The placement of the biasing means in the housing may leave the biasing means vulnerable to tempering. In addition, assembly can be difficult and tend to fail over time.

The free end of the bolt also cannot be held firmly in strike unless the housing is correctly placed in the mortis cavity. The problem with mortise locks is that the size of the cavity formed in the door may exceed the size of the lock assembly housing. This may allow the housing to be pressed deeper into the cavity to the extent that the free end of the bolt is no longer placed within the strike when in the operating position. Naturally this places a constraint on the stability of the lock assembly.

Reference within this specification to a patent document or other material given in the prior art states that the document or material is known in Australia or that the information it contains is part of what is generally known as the priority date of any claim. It is not taken as.

It is an object of the present invention to provide an alternative mortise lock assembly that solves one or more of the problems of existing mortise lock assemblies.

According to one embodiment of the invention, a housing, on the housing for pivoting movement with respect to the housing, between an operating position in which the bolt protrudes from the housing and an inactive position in which the bolt is substantially disposed within the housing. The bolt mounted, relative to the housing, between a first position associated with the bolt and deadlocking the bolt in the operating position and a second position rendering the bolt in the non-operating position. Drive means mounted on the housing for pivoting movement, a key operated actuator operable from the outside of the lock assembly by a key applied to pivot the drive means, The drive number to squeeze towards the first or second position A mortise lock assembly is provided that includes biasing means acting on a phase, the biasing means including an elastic element having an axial size that changes when the drive means moves between the first position and the second position. do.

The elastic element is preferably a helical spring having an axial length size that changes when the drive means moves between the first and second positions. More preferably, the helical spring is a compression spring. The deflection means further preferably comprises a column element connected to the drive means, which acts between the drive means and the elastic element. More preferably, the elastic element at least partially surrounds the column element to provide an elastic element with lateral stability. More preferably the elastic element acts between the column element and the housing. The elastic element is preferably engaged with a shoulder formed on the wall of the housing and the column element.

The drive means includes a drive arm pivoted about the drive axis in response to actuation of the actuator, the drive arm distant from the drive axis, which is operatively engaged with the bolt when moved between an actuation position and a non actuation position. Has a free end disposed so that the drive means places the free end of the drive arm in line with the drive axis to deadlock the bolt in the operating position, thereby freeing the drive end and the drive axis when in the operating position. It is desirable to suppress the force from the bolt directed through. The drive means arranges the free end of the drive arm in line with the drive axis to deadlock the bolt in the inoperative position, thereby restraining the force from the free end when in the inoperative position and the bolt directed through the drive axis. desirable. The drive means also preferably comprise one or more gears for engagement with the gears associated with the cams of the actuators. It is further preferred that the drive means comprise a mount for mounting the drive means on the housing, the mount being connected to a drive arm for rotating together with respect to the housing, the lock being between the operating position and the non-operating position. It has at least one gear for engagement with a gear associated with a hand engageable actuator, which can operate from the inner side of the lock assembly to move the bolt.

The mortis lock preferably includes an adjustable spacer strut extending from the housing in use to engage the rear wall of the mortis cavity for rigid placement of the housing in the cavity.

Preferably, the strut comprises a movable member, the movable member having an engaging end that is linearly movable relative to the housing to engage the rear wall of the mortise cavity. The movable member preferably has a drive end that is rotated relative to the housing to move the engagement end relative to the housing. The movable member also includes a threaded shaft for positioning in a threaded bore associated with the lock assembly housing, whereby rotation of the shaft relative to the bore moves the movable element relative to the housing. The threaded bore is preferably formed in a nut that is held in place with respect to the housing to inhibit rotation about the housing when the shaft is rotated.

According to yet another embodiment of the present invention, there is provided a mortise lock assembly for positioning in a mortise cavity formed in a door, the mortise lock assembly having a housing, an operating position at which the bolt protrudes from the housing and substantially the bolt The bolt mounted on the housing, the first position associated with the bolt and deadlocking the bolt in the operating position for pivoting movement to the housing between non-operating positions disposed within the housing. Drive means mounted on the housing for pivoting movement relative to the housing between a second position that renders the bolt in the non-operational position, and a key applied to pivot the drive means. Key actuation actuator operable from outside of the lock assembly A key operated actuator, and an adjustable strut extending from the housing when used to engage the rear wall of the mortise cavity to securely position the housing within the cavity.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of the present invention. The specificity of the drawings and the detailed description associated therewith should not be understood as interfering with the generality of the above-described broad description of the invention of the invention.

1 is an exploded view of a preferred embodiment of a mortis lock assembly according to the present invention;

2 is a front view of the lock assembly with the front portion of the housing removed and the bolt in the non-operational position;

3 is a rear view of the lock assembly with the rear portion of the housing removed and the bolt in the inoperative position;

4 is a front view of the lock assembly with the front portion of the housing removed and the bolt between the non-operating position and the operating position;

5 is a rear view of the lock assembly with the rear portion of the housing removed and the bolt between the non-operational and operational positions;

6 is a front view of the lock assembly with the front portion of the housing removed and the bolt in the operating position;

7 is a rear view of the lock assembly with the rear portion of the housing removed and the bolt in the operating position.

First, referring to FIG. 1, which shows a housing having a front part 1 and a rear part 2, the rear part 2 has a top wall 3, a bottom wall 4, a back wall 5 and The front wall 6 is formed. The front wall 6 is provided with a gap 7 to allow the bolt 8 to extend therethrough when in the operating position. The bolt 8 is mounted on the spindle 59 which is mounted to the front part 1 and the rear part 2 of the housing. The housing is preferably formed of zinc diecast, taking into account the formation of relatively complex features.

In addition, the mortise lock assembly illustrated in FIG. 1 has a cylinder lock with a casing 10 extending through an aperture 11 formed in the front portion 1 of the housing for operation from an outer side of the lock assembly. 9). The cylinder lock 9 comprises a barrel 12 rotatable relative to the casing 10, with the cam 13 connected to the barrel 12 so as to rotate together. The illustrated cylinder lock 9 is a pin tumbler type cylinder lock, but it may be replaced by another type of cylinder lock such as a disk or wafer tumbler lock.

The mortise lock assembly preferably includes a manually operable actuator assembly operable from an inner side of the lock assembly. The lock assembly illustrated in FIG. 1 has a manually operable actuator assembly comprising a mount 14 disposed in an aperture 15 formed in the housing rear portion 2 for operation from the lock assembly inner side. The hand operated actuator assembly includes a barrel 16 rotatable relative to the mount 14 and a cam 17 engaged with the barrel 16 to rotate together. The barrel 16 has a square cross-section bore 18 that can receive a spindle of a hand engageable element, such as a turn-snib or lever handle (not shown) for rotating the barrel 16. Is formed. Alternatively, the spindle of the hand engageable element may be disposed in the bore 62 of the square cross section of the mount 20 (see FIG. 3). It is to be understood that the manually operable actuator assembly may be replaced with an additional key operated cylinder lock such that the operation of the mortise lock assembly is controlled by key operated cylinder locks on the inner and outer sides.

The mortise lock assembly illustrated in FIG. 1 also includes a drive means. The illustrated drive means comprises an actuation lever 19 and a mount 20 for mounting the actuation lever on a housing. The illustrated actuating lever 19 is formed with a gear tooth 21 which engages with the gear tooth 22 of the key actuated actuator cap 13. In addition, the illustrated mount 20 is formed with a gear 51 that meshes with the cam 17 of the manually operable actuator assembly.

The actuation lever 19 is connected to the mount 20 such that the rotation of one of the cams 13, 17 induces a rotation of the actuation lever 19 about the drive axis XX. Reference is briefly made to FIG. 3, which shows a preferred embodiment of the connection between actuation lever 19 and mount 20. While there may be a range of suitable connections, the preferred connection illustrated is related to the keying of the actuating lever into a mount providing engaging surfaces 23 and 52 on the actuating lever, which mount is the drive of the drive means. It extends in the direction parallel to the axis XX. The drive means is rotatable about the drive axis XX between the first position and the second position.

The actuation lever 19 illustrated in FIG. 1 also includes a drive arm 24 extending radially from the drive axis XX which engages the bolt 8. The bolt 8 is formed with a cavity 25 at least partially defined by a pair of opposing surfaces 27, 28 formed at the drive end of the bolt 19. The free end 26 of the drive arm 24 is one of the faces 27, 28 to hold the bolt 19 in an actuated or non-actuated position in a manner described below with reference to FIGS. 2 to 7. Cooperate with

The mortise lock assembly illustrated in FIG. 1 also includes a deflection means 29. The deflection means 29 cooperate with the drive means to urge the drive means towards the first position or the second position, which corresponds to placing the bolt in either the actuated or non-actuated position. The illustrated deflection means 29 comprise a column element 30 having an end 81 for placement in a recess 82 formed in the mount 20. Since the drive means move between the first position and the second position, the end 81 is shaped relative to the recess 82 so that it can be pivoted in the recess 82.

The deflection means 29 comprise an elastic element 32 disposed at the end 33 of the column element 30 spaced from the end 81. The elastic element urges the end 81 to rest within the recess 82. The illustrated elastic element 32 is a helical compression spring. Helical compression springs are preferred, but it should be understood that other types of suitable elastic elements may be substituted. The compression spring 32 is a pair of shoulders 34, 35 formed on the end 33 of the column element 30 and a pair of pairs formed adjacent to the top wall 3 of the housing rear part 2. It is located between the shoulders 36 and 37.

The illustrated column element 30 is fixed to the drive means by a protrusion 31 formed on the mount 20. It should be understood that the projection 31 can alternatively be disposed on the actuation lever 19 or extend between the actuation lever 19 and the mount 20. The illustrated column element 30 includes a free end 81 apertured therein for receiving a projection 31. This configuration is provided to reduce the likelihood that the end 81 is disengaged from the recess 82.

The mortise lock assembly illustrated in FIG. 1 also includes an adjustable strut 39 in the form of a bolt assembly 41 and a nut assembly 40 associated with the rear wall 5 of the housing rear portion 2. In order for the rotation of the bolt 41 relative to the nut 40 to move the free end 42 of the bolt 41 relative to the rear wall 5 of the housing, the nut is formed in a cavity formed in the rear wall 5. 38). Although only the configuration of the nut 40 and the bolt 41 is illustrated, it should be understood that other means may replace the nut and the bolt to achieve similar functionality. In order to enable the strut 39 to inhibit the mortise lock assembly from being pressed deeper into the cavity, the free end 42 of the bolt 41 is adapted to engage the rear wall of the mortise cavity in which the mortise lock assembly is placed. have.

Reference is now made to FIG. 2 which illustrates the drive means in the second position and the bolt 8 in the inoperative position. Note that the compression spring 32 is in a relatively loose state. In addition, in order to suppress the force generated when an unauthorized user attempts to manipulate the bolt 8 from the non-operational position, the free end 26 of the drive arm 24 is connected to the cavity 25 of the bolt 8 drive end. It should be noted that it is located between the defining surface 28 and the drive axis XX of the drive means. Unapplied operation of the bolt 8 is such that the position of the free end 36 relative to the axis XX and the surface 28 is slightly above the center so as to induce a bias further away from the first position of the drive means. desirable.

Hereinafter, the gears 51, 21 of the actuation lever 19 and the mount 20 and the rotation of one of the barrels 12, 16 induce a rotation of the actuation lever 19 about the drive axis XX. Reference is made to FIG. 3 which illustrates the engaging cams 13, 17. It should also be noted that the cam 13 of the key actuated actuator is not directly connected to the cam 17 of the actuator which is engageable by hand such that the respective cams 13, 17 operate independently of each other. More specifically, rotation of the key actuated cam 13 rotates the cam 17 which is manually actuated, while rotation of the actuated cam 17 does not rotate the key actuated cam 13. This is because the key actuating cam 13 is rotated to disengage from the gear 21 of the actuating lever 19 so that the key can be removed from the cylinder lock 9.

Reference is now made to FIGS. 4 and 5, which illustrate bolts 8 disposed between actuated and non actuated positions. Since the drive means are between the first and second positions, it is important to understand that the spring 32 is in a relatively compressed state. In the compressed state, it should be understood that the spring 32 urges the column element 30 to act on the drive means to move the drive means toward the first or second position. Furthermore, this causes the bolt 8 to move towards either the operating position or the non-operating position.

6 and 7 illustrate the drive means in the first position and the bolt 8 in the operating position. FIG. 6 illustrates in particular a bolt 8 extending out through the gap 7 in the front wall 6 of the housing rear part 2. In this position, the surface of the cavity 25 formed at the free end of the bolt 8 and the drive means are formed in order to suppress the force applied to the free end of the bolt 8 from moving the bolt away from the operating position. The free end 26 of the drive arm 24 is located between the drive axes XX. The position of the free end 36 with respect to the axis XX and the surface 28 is slightly above the center so that an unmanaged operation of the bolt 8 leads to a pressure further away from the second position of the drive means. It is preferable.

At the free end of the bolt illustrated in the figures, a bee or hook is formed for engaging a catch formed in a strike element (not shown). It should be understood that the present invention is also applicable to cubic style bolts without hooks at the free ends.

The deflection means of the present invention provide a lock assembly having various advantages over the prior art. Positioning the resilient element or spring away from the bolt and drive means reduces susceptibility to damage or interference caused by the lock assembly moving parts. Furthermore, the use of helical compression springs, as shown, is considered to be stronger than prior art elastic elements. A further advantage of the lock assembly is the ability to positively space in the housing rear wall from the rear wall of the mortise cavity in which the lock assembly is disposed.

Finally, it should be understood that various changes, modifications and / or additional examples may be introduced in the above-described parts without departing from the spirit or scope of the invention.

Claims (23)

In a mortice lock assembly, housing; A bolt, said bolt mounted on said housing for pivoting movement with respect to said housing between an operating position protruding from said housing and an inoperative position in which said bolt is substantially disposed within said housing; Pivoting motion relative to the housing between a first position associated with the bolt and deadlocking the bolt at the operating position and a second position rendering the bolt at the non-operating position Drive means mounted on said housing for said purpose; A key operated actuator operable from the outside of the lock assembly by a key applied to pivot the drive means; Biasing means acting on said drive means to urge said drive means towards said first or second position, said biasing means being characterized in that said drive means is provided between said first position and said second position. A mortise lock assembly comprising an elastic element having an axial size that changes as it moves in a. The method of claim 1, And wherein said resilient element is a helical spring having a axial length of magnitude that changes when said drive means moves between said first and second positions. The method of claim 1, And the helical spring is a compression spring. The method according to claim 1 or 2, And the deflection means comprises a column element connected to the drive means, acting between the drive means and the resilient element. The method of claim 4, wherein And a mortise lock assembly at least partially surrounding the column element to provide lateral stability to the elastic element. The method of claim 5, wherein And the elastic element acts between the column element and the housing. The method of claim 6, And the elastic element engages a shoulder formed on the wall of the column element and the housing. The method according to any one of claims 1 to 7, The drive means includes a drive arm pivoted about a drive axis in response to actuation of the key actuated actuator, the drive arm operatively engaged with the bolt when moved between an actuation position and a non actuation position. A free end spaced apart from the drive axis, whereby the drive means places the free end of the drive arm in line with the drive axis to deadlock the bolt in the operating position, thereby And a mortise lock assembly that suppresses force from the bolt being directed through the free end and the drive axis when in a position. The method of claim 8, The drive means arranges the free end of the drive arm in line with the drive axis to deadlock the bolt in the non-operational position, thereby directing the bolt through the free end and the drive axis when in the non-operational position. Mortis lock assembly to suppress force from. The method according to claim 8 or 9, And the drive means comprises at least one gear for engagement with a gear associated with the cam of the actuator. The method according to any one of claims 8 to 10, The drive means comprises a mount for mounting the drive means on the housing, the mount being connected to a drive arm for rotating together with respect to the housing, the mount being between the operating position and the non-operating position. And a mortise lock assembly associated with a hand engageable actuator capable of operating from an inner side of the lock assembly to move the lock bolt. The method of claim 11, And the mount is associated with the hand engageable actuator by a gear train. The method of claim 12, And the hand engageable actuator is coupled to the mount via a spindle. The method according to any one of claims 1 to 13, A mortis lock assembly comprising an adjustable strut extending from the housing in use to engage the rear wall of the mortis cavity to rigidly place the housing within the cavity. The method of claim 12, And the adjustable strut comprises a movable member, the movable member having a mating end that is linearly movable relative to the housing to engage the rear wall of the mortise cavity. The method of claim 13, And the movable member has a drive end that is rotated relative to the housing to move the engagement end relative to the housing. The method of claim 14, The movable member includes a threaded shaft for positioning in a threaded bore associated with the lock assembly housing, whereby rotation of the shaft relative to the bore moves the movable element relative to the housing. . The method of claim 15, And a mortise lock assembly in which the threaded bore is formed in a nut that is secured in place relative to the housing to inhibit rotation about the housing when the shaft is rotated. A mortis lock assembly for positioning in a mortis cavity formed in a door, housing; A bolt, said bolt mounted on said housing for pivoting movement with respect to said housing between an operating position protruding from said housing and an inoperative position in which said bolt is substantially disposed within said housing; Mounted on the housing to pivot movement to the housing between a first position associated with the bolt and deadlocking the bolt at the operating position and a second position rendering the bolt at the non-operating position Drive means; A key operated actuator operable from the outside of the lock assembly by a key applied to pivot the drive means; And And a mortise lock assembly including an adjustable strut extending from the housing when in use to engage the rear wall of the mortise cavity to securely place the housing within the cavity. The method of claim 17, And the adjustable strut comprises a movable member, the movable member having a mating end that is linearly movable relative to the housing to engage the rear wall of the mortise cavity. The method of claim 18, And the movable member has a drive end that is rotated relative to the housing to move the engagement end relative to the housing. The method of claim 19, The movable member includes a threaded shaft for positioning in a threaded bore associated with the lock assembly housing, whereby rotation of the shaft relative to the bore moves the movable element relative to the housing. . The method of claim 20, And a mortise lock assembly in which the threaded bore is formed in a nut that is held in place relative to the housing to inhibit rotation about the housing when the shaft is rotated.

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