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1. WO2007100167 - DISPOSITIF DE VERROUILLAGE DE FOUILLOT POUR ENSEMBLE SERRURE A MORTAISER

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Description
HUB-LOCKING APPARATUS FOR MORTISE LOCK
ASSEMBLY
Technical Field
[1] The present invention relates to a hub-locking apparatus for a mortise lock
assembly, and more particularly, to a hub-locking apparatus for a mortise lock
assembly, in which a motor is driven by an externally input electrical signal to control a locking member that binds a hub.
Background Art
[2] A mortise lock assembly is a kind of a door locking apparatus that releases a latch bolt from a locking groove of a door frame by turning a rotary ring or a handle. It is generally accepted that the mortise lock assembly has the most excellent durability. In this respect, it is general that the mortise lock assembly is used for a door having a metal frame in a front door or an office.
[3] Such a mortise lock assembly is disclosed in detail in the Korean Patent Application

No. 10-1999-0017399 filed on May 14, 1999 in the name of the applicant of this
invention. This mortise lock assembly has a structure that a latch bolt is deeply inserted into a groove of a door frame to ensure locking even without using a dead bolt.
Disclosure of Invention
Technical Problem
[4] An object of the present invention is to provide a hub-locking apparatus for a
mortise lock assembly, in which a hub reversing a latch bolt while rotating along with a rotary ring is provided with a locking groove to allow a locking member to be locked in the locking groove, and the locking member is rotated by a motor driven by an
externally input electrical signal to lock or release the hub using the electrical signal.

[5] Another object of the present invention is to provide a hub-locking apparatus for a mortise lock assembly, in which a release cam is provided to push up a ring of a
locking member to be released from a groove of a hub, thereby forcibly releasing
locking in case of emergency, wherein the ring of the locking member is fitted into the groove of the hub to lock the mortise lock assembly.
Technical Solution
[6] In a mortise lock assembly including a hub rotating along with a rotary ring
connected to a handle, opening a door by retracting and releasing a latch bolt from a door frame in accordance with rotation of the hub, a hub-locking apparatus for the mortise lock assembly, comprising a locking member preventing the hub from being rotated when one end is fitted into a groove of the hub and allowing rotation of the hub when the one end is released from the groove, and a pivot member joined with the
locking member to pivot the locking member.
[7] The pivot member includes a screw locking one part of the locking member to pivot the locking member at a certain angle, and a motor rotating the screw, the screw being provided with a control plate of a conducting material in the locking member to control the rotational angle of the locking member, the control plate being locked in the screw to move up and down, and the screw being provided with a stopper of a conducting material at upper and lower portions to stop the motor if the control plate is in contact with the stopper.
[8] The hub is respectively provided inside and outside the door, and the locking
member has a width smaller than the distance between the hub inside the door and the hub outside the door so that the locking member moves along a rotary shaft of the hub and is locked in only one of the two hubs.
[9] Further, the hub-locking apparatus for the mortise lock assembly further includes a release cam rotatably assembled into any one rotary shaft of the mortise lock assembly, pushing up the end of the locking member to release the locking member from the
groove of the hub while rotating at a certain angle.
[10] The release cam is provided with a wing at both sides, the wing having a projection fitted into a slot, the slot being formed in a release rotary shaft, and the release rotary shaft being designed to rotate only if a certain force or greater is given by a rotary
guide.
Advantageous Effects
[11] Since a hub-locking apparatus for a mortise lock assembly according to the present invention can control whether to rotate a hub in accordance with an external electrical signal, it is possible to control the mortise lock assembly using the external electrical signal.
[12] Further, the hub-locking apparatus for a mortise lock assembly according to the present invention rotates a release cam to forcibly release the hub from a locking
member.
Brief Description of the Drawings
[13] FIG. 1 is a perspective view illustrating a mortise lock assembly according to the present invention;
[14] FIG. 2 is an exploded perspective view illustrating a mortise lock assembly
according to the present invention;
[15] FIG. 3 to FIG. 5 are front views illustrating a mortise lock assembly according to the present invention, wherein FIG. 3 illustrates the state that a hub is locked, FIG. 4 illustrates the state that the hub is released, and FIG. 5 illustrates the state that the hub is operated to retract a latch bolt;
[16] FIG. 6 illustrates the operation state that the inside and the outside of a door are freely changed in accordance with a position of a mortise lock assembly; and
[17] FIGs. 7 and 8 illustrate the state before and after a hub locking apparatus is forcibly released from a mortise lock assembly according to the present invention.
Best Mode for Carrying Out the Invention
[18] A perspective view illustrating the inside of a case 12 in a state that a cover 14 of a mortise lock assembly according to the present invention is removed is shown in FIG. 1. In the same manner as a conventional mortise lock assembly, as shown in FIG. 1, if a hub 52 is rotated, a pivot member 44 provided with a rotary ring 46 is rotated and one end of the pivot member 44 is pushed to rotate a driving member 42 and at the same time linearly retract the latch bolt 22. A front hub of two hubs 52 is omitted in
FIGs. 1 and 2 to avoid any confusion. The hub 52 is shown in front views of FIGs. 3 to 5. Since a door handle is fitted into a groove 1 of the hub 52, if a user rotates the door handle, the hub 52 is rotated toward a side forced by the user. The hub 52 is designed to arrange the rotary ring 46 between two wings 521 and 523. The hub 52 is rotated around the groove 1 into which the door handle is fitted. Unlike the conventional
mortise lock assembly, the hub 52 is provided with a head 525 at the top and the head 525 is provided with a locking groove 525a which is cut. The rotary ring 46 is
positioned between the wings 521 and 523 of the hub 52 and upwardly forced by
elasticity of a spring 444 provided in a rotary shaft 44 of the pivot member 44.
Therefore, the rotary ring 46 is pushed by the wings 521 and 523 to downwardly move along with the pivot member 44 if a rotary force that overcomes the elasticity is given to the hub 52 in a state that the rotary ring 46 is positioned between the wings 521 and 523 by the elasticity. FIG. 5 illustrates the state that the rotary ring 46 is forced to
downwardly move.
[19] If the pivot member 44 descends, the end opposite to the rotary shaft 44 of the pivot member 44 descends to push a bushing 423 while rotating around the rotary shaft 44 . If the bushing 423 is pushed, the driving member 42 is rotated at a certain angle around a rotary shaft 42 . Then, a part of the driving member 42 fitted into a groove 227 of the latch bolt 22 is rotated to push the latch bolt 22 to retract it. As a result, the latch bolt 22 is released from the groove of the door frame so that the door can be opened. A shaft 24 is assembled at the rear of the latch bolt 22 and locked in a shaft support plate 26. The shaft 24 is provided with a spring 28 to provide a force that externally pushes the latch bolt 22.
[20] A trigger bolt 32 is provided below the latch bolt 22 and designed to advance and reverse along with the latch bolt 22 by passing through a front plate 16. The trigger bolt 32 is forced toward the front by a force of a spring 131. A stopper member 34 for stopping the latch bolt from retracting is provided above the trigger bolt 32.
[21] The driving member 42 has a right angled L shape and is rotated around the rotary shaft 42 . One end of the driving member 42 is fitted into a groove 227 of a body 221 of the latch bolt 22 to pull the latch bolt 22 while the other end of the driving member 42 is rotated by being pushed by the pivot member 44.
[22] The rotary ring 46 is respectively provided at front and rear sides of the pivot
member 44 to respectively correspond to the two hubs 52. The two hubs 52 are
provided because the door handle is respectively provided at front and rear sides of the door.
[23] As described above, each hub 52 is provided with the head 525 having the groove
525a, and a locking member 61 serving as a locking means 60 has a ring 61a at one end to be fitted into the groove 525a of the hub 52. The ring 61a is assembled into the assembly to rotate with respect to the rotary shaft 60 , and the locking member 61 is provided with a control plate 62 having a thin plate shape. The control plate 62 is
designed to be locked in a screw 80 provided in a rotary shaft of a motor 70, and
ascends and descends along the screw 80 in accordance with rotation of the motor 70 so that the ring 61a of the locking member 61 is bound to or released from the groove 525a of the hub 52. The motor 70 is supplied with an external power source and
operated by an external electrical signal. An electronic key or a smart card may be used to supply the electrical signal to the motor 70.
[24] A stopper 81 of a conducting material is provided at upper and lower ends of the screw 80 so that the control plate 62 is not released from the screw 80. If the control plate 62 of a conducting material is closed as the screw 80 is operated, the stopper 81 serves as a switch so as to stop driving of the motor 70 through a circuit.
[25] For example, if the electronic key is used, an electrical signal is applied from the circuit to the motor 70 to drive the motor 70. If a rotary force occurs as the motor 70 is driven, the control plate 62 upwardly moves along the screw 80 so that the ring 61a of the locking member 61 is released from the groove 525a of the hub 52 to open the door. In an opposite case, since the ring 61a is fitted into the groove 525a, the hub 52 is not rotated so as not to open the door. If the control plate 62 closes the stopper 81, the motor 70 is stopped.
[26] FIG. 6 is a front view illustrating the operation state that the inside and the outside of the door are freely changed as the locking member 61 moves. Referring to FIG. 6, the locking member 61 moves in left and right directions based on FIG. 6 along the rotary shaft 60 to change the inside and the outside of the door. Since the distance between the two hubs 52 is greater than the width of the locking member 61, the
locking member 61 is designed to lock only one of the two hubs 52. Further, since the locking member 61 moves along the rotary shaft 60 , the right side becomes the outside if the locking member 61 is directed toward the right side as shown in an upper portion of FIG. 6 while the left side becomes the outside if the locking member 61 is directed toward the left side as shown in a lower portion of FIG. 6.
[27] FIGs. 7 and 8 illustrate the operation that the hub is released from the mortise lock assembly according to the present invention. FIG. 7 illustrates the state that the ring
61a of the locking member 61 is fitted into the groove 525a of the hub 52 while FIG. 8 illustrates the state that the ring 61a of the locking member 61 is released from the groove 525a of the hub 52 by the operation of the release cam 90. Referring to FIG. 7, the ring 61a of the locking member 61 is fitted into the groove 525a of the hub 52 and thus completely locked in the hub 52. In this state, if the motor 70 is not driven by some reasons, the state that the door cannot be opened at all may be caused. In this case, the release cam 90 is rotated at a certain angle to push up the ring 61a, thereby opening the door. Otherwise, metal plates of various layers such as the door or the cover of the mortise lock assembly are bored using a drill to rotate the release cam 90, thereby releasing the locking member 61.
[28] A wing 91 having a projection 92 fitted into a slot 93b is formed at both sides of the release cam 90. The slot 93b is formed in a release rotary shaft 93 designed to rotate only if a certain force or greater is given by a rotary guide 94. In other words, an outer surface and an inner surface of the release rotary shaft 93 are all formed with oval or similar shapes so that the surface of the smallest diameter is elastically pushed by the rotary guide 94 and rotated by the external force to overcome elasticity, thereby
rotating the release cam 90. In this case, the user can rotate the release cam 90 using a mechanism suited for an inner through hole of the release rotary shaft 93.
[29] Referring to FIG. 8, the release cam 90 is rotated, and the user counterclockwise rotates the release rotary shaft 93 positioned at the center, i.e., the left to clockwise rotate the release cam 90 at a certain angle, so that the ring 61a is released from the groove 525a of the hub 52. At this time, the release rotary shaft 93 at the opposite side is also rotated counterclockwise. In this state, if the release rotary shaft 93 is rotated to return to the original position, the locking member 61 binds the hub 52.
Industrial Applicability
[30] The hub-locking apparatus for a mortise lock assembly according to the present invention can usefully be used for an apparatus for locking a door such as a front door.

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