WO2021201767A1 - Ensemble verrou électromécanique, et son procédé de fonctionnement - Google Patents

Ensemble verrou électromécanique, et son procédé de fonctionnement Download PDF

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Publication number
WO2021201767A1
WO2021201767A1 PCT/SG2020/050198 SG2020050198W WO2021201767A1 WO 2021201767 A1 WO2021201767 A1 WO 2021201767A1 SG 2020050198 W SG2020050198 W SG 2020050198W WO 2021201767 A1 WO2021201767 A1 WO 2021201767A1
Authority
WO
WIPO (PCT)
Prior art keywords
interface
clutch
inner cylinder
lock assembly
coupling
Prior art date
Application number
PCT/SG2020/050198
Other languages
English (en)
Inventor
Kwang Hwee LEOW
Original Assignee
Xcm Security Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xcm Security Pte. Ltd. filed Critical Xcm Security Pte. Ltd.
Priority to PCT/SG2020/050198 priority Critical patent/WO2021201767A1/fr
Publication of WO2021201767A1 publication Critical patent/WO2021201767A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0611—Cylinder locks with electromagnetic control
    • E05B47/0615—Cylinder locks with electromagnetic control operated by handles, e.g. by knobs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0611—Cylinder locks with electromagnetic control
    • E05B47/0638—Cylinder locks with electromagnetic control by disconnecting the rotor
    • E05B47/0646—Cylinder locks with electromagnetic control by disconnecting the rotor radially
    • E05B47/0649—Cylinder locks with electromagnetic control by disconnecting the rotor radially with a rectilinearly moveable coupling element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0676—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle
    • E05B47/0684—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle radially
    • E05B47/0692—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle radially with a rectilinearly moveable coupling element
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
    • E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
    • E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
    • E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/0024—Cams

Definitions

  • the present invention relates to an electromechanical lock assembly with a bias clutch that enforces a rotational coupling between an interface and an inner cylinder.
  • Electromechanical locks and associated smart keys combine the deliberateness of mechanical locks with the ability to electronically control any lock or key remotely along with on demand access to audit information. Keys can be configured to operate on a time, date and access level basis allowing high levels of granularity in access control granted. Electromechanical lock cylinders can seamlessly integrate into existing security infrastructure by the simple replacement of mechanical lock cylinders.
  • a primary embodiment of the invention is an electromechanical lock assembly comprising an interface rotatable around a longitudinal axis, an inner cylinder disposed within the interface and rotatable around the longitudinal axis, a clutch disposed within the inner cylinder and rotatable between a disengaged position and an engaged position that enforces a rotational coupling of the interface and the inner cylinder and a motor configured to rotate the clutch to the engaged position, wherein the clutch is bias towards the disengaged position.
  • the motor is operable to hold the clutch at the engaged position.
  • the clutch is held at the engaged position for a predetermined duration.
  • the interface and the inner cylinder are rotatable to enforce a fail-back coupling between the interface and the inner cylinder.
  • the interface and the inner cylinder have a locked position wherein the fail-back coupling is disengaged when the interface and the inner cylinder are rotated to the locked position.
  • the electromechanical lock assembly further comprises a first coupling member wherein, while the clutch is in the disengaged position, the first coupling member is freely disposed within a first cavity defined by the interface, the inner cylinder and the clutch, and while the clutch is in the engaged position, the first coupling member is disposed within a second cavity defined by the interface and the inner cylinder to enforce the rotational coupling.
  • the electromechanical lock assembly further comprises a second coupling member wherein, while the clutch is in the disengaged position, the second coupling member is freely disposed within a third cavity defined by the interface, the inner cylinder and the clutch, and while the clutch is in the engaged position, the second coupling member is disposed within a fourth cavity defined by the interface and the inner cylinder to enforce the rotational coupling.
  • the electromechanical lock assembly further comprises a fixed outer cylinder in which the interface is disposed, and a fail-back coupling member disposed within a fifth cavity defined by the interface and the inner cylinder to enforce the fail-back coupling while the interface and the inner cylinder are being rotated.
  • the fail-back coupling member is biased radially outwards from the longitudinal axis, and when the interface and the inner cylinder are in the locked position, the fail-back coupling member resides in a sixth cavity defined by the outer cylinder and the interface.
  • An alternate embodiment of the invention is a method of operating an electromechanical lock comprising the steps of biasing a clutch towards and at a disengaged position, receiving and authenticating security credentials, rotating a clutch at an engaged position, holding the clutch at the engaged position to enforce a rotational coupling between an interface and an inner cylinder, rotating the interface and the inner cylinder away from a locked position to enforce a fail-back coupling between the interface and the inner cylinder, releasing the clutch to disengage the rotational coupling, and rotating the interface and the inner cylinder to the locked position to disengage the fail-back coupling.
  • Fig. 1 depicts an exploded view of the lock assembly.
  • Fig. 2A, 2B, 2C and 2D depict sectional views of the assembled lock assembly in some embodiments in various states of operation.
  • an embodiment of the invention is an electromechanical lock assembly as part of an electromechanical lock comprising an interface 101 rotatable around a longitudinal axis 118, an inner cylinder 102 disposed within the interface 101 and rotatable around the longitudinal axis 118, a clutch 103 disposed within the inner cylinder 102 and rotatable between a disengaged position and an engaged position and a motor 104 configured to rotate the clutch 103 to the engaged position. While the clutch 103 is in the disengaged position, the interface 101 and inner cylinder 102 are capable of rotating independently from one another.
  • the clutch 103 is bias towards the disengaged position by a biasing means 105 such as a torsion spring. Any device that, while the clutch 103 is being rotated to the engaged position, exerts torque in an opposite direction from that of the torque from motor 104 and stores the accumulated mechanical energy therein may be used as the biasing means 105.
  • the inner cylinder 102 may be associated on one end with a key connector 114 that permits the insertion of a corresponding key (not depicted) such that the inner cylinder 102 can be rotated by a corresponding rotation of the key.
  • the key transmits security credentials to a control circuit (not depicted).
  • the control circuit may include a microprocessor and associated memory for verifying the security credentials.
  • the control circuit sends a signal to the motor 104 to rotate a shaft (not depicted) which in turn overcomes the clutch 103 bias and rotates the clutch 103 from the disengaged position to the engaged position.
  • the clutch 103 While in the engaged position, the clutch 103 places the lock assembly 100 in a mechanically unlockable state by enforcing the rotational coupling of the inner cylinder 102 to the interface 101 .
  • the interface 101 is operably attached to a securing means 115, for which non-limiting examples include a latch (as depicted in Fig. 1) or a deadbolt. Any means of securing the lock that is operable by the rotation of the interface 101 may be used as the securing means 115. Therefore, by rotating the key, and in doing so, and, by way of inner cylinder 102 and interface 101 , the securing means 115, the lock assembly 100 can be mechanically unlocked so long as the clutch 103 remains in the engaged position.
  • the inner cylinder 101 may be rotatable (not depicted) by a handle or knob in place of directly rotating the key. While in the disengaged position, rotating the inner cylinder 102 by way of the key is unproductive as the inner cylinder 102 remains uncoupled to the interface 101.
  • the clutch 103 is spontaneously returned to the disengaged position by the release of stored mechanical energy from the biasing means 105.
  • the biased clutch 103 is advantageous as it reduces/eliminates the need for more complex control circuits which require the motor 104 to have a degree of positional awareness in order to move the clutch from the disengaged position to the engaged position and back.
  • the clutch 103 can be held at the engaged position by the constant application of torque supplied to the motor 104 and a physical barrier (not depicted) that prevents the clutch 103 from otherwise rotating past the engaged position.
  • the control circuit is configured to cut power to the motor 104 after a predetermined duration has passed, thus returning the clutch 103 to a disengaged position. This is advantageous as it spares the motor 104 from running longer than necessary to reduce wear and from a security standpoint, in that the assembly is not mechanically unlockable for longer than necessary thus ensuring that the assembly is not in an unlockable state for longer than necessary.
  • first coupling member 106 such as a ball bearing as depicted in the figures. It will be readily understood that first coupling member 106 may take any shape so long as it facilitates the coupling of the interface 101 and inner cylinder 102.
  • the first cavity 201 is a continuous space formed by the alignment of, along a radial plane, a recess in the clutch 103, an opening spanning the full thickness of the inner cylinder 102 and a recess in the interface 101 , the opening serving as channel that allows the first coupling member 106 to move between the recesses. Rotational coupling is not achieved via the first coupling member 106 while it is free to move within the first cavity 201.
  • the recess in the clutch 103 is no longer continuous with the first cavity 201 thus giving rise to a second cavity 202 consisting of the opening in the inner cylinder 102 and the recess in the interface 101.
  • the recess in the clutch 103 is shallow relative to the diameter of the first coupling member 106 to ensure that when the clutch 103 is in the engaged position, the first coupling member 106 will reside within the second cavity 202 and not within the recess in the clutch 103.
  • the recess in the interface 101 is shaped to match the shape of the first coupling member 106 to allow the first coupling member 106 to transmit torque from the inner cylinder 102 to the interface 101.
  • a second coupling member 107 along with a corresponding third cavity 203 and fourth cavity 204 may be employed in a manner similar to that of the first cavity to provide additional reliability. Further coupling members employed in similar fashion are likewise are within the scope of the invention.
  • the clutch is mounted such that while the inner cylinder 102 is rotating around the longitudinal axis 118, the position of the inner cylinder 102 relative to that of the clutch 103 remains unchanged. While in the position as depicted in Fig. 2A and 2B, the rotationally coupled inner cylinder 102 and interface 102 are said to be in a locked position.
  • a fail-back coupling between the interface 101 and inner cylinder 102 is engaged to enforce rotational coupling between the interface 101 and inner cylinder 102 when, while the clutch 103 is engaged, the interface 101 and the inner cylinder 102 are rotated away from the locked position.
  • This rotational coupling is independent from that achieved by way of the clutch 103 and can in fact be concurrent till the clutch 103 returns to the disengaged position. In this manner, rotational coupling between the interface 101 and inner cylinder 102 can be maintained even when the clutch 103 is disengaged.
  • the fail-back coupling is thus advantageous as it allows the inner cylinder 101 and interface 102 at the unlocked position (as depicted in Fig. 2C and 2D) to be rotated back to the locked position regardless of whether the user still has permission to access the lock in question. For example, if a user who unlocks the electromechanical lock assembly forgets to lock it before his or her time-based access expires and after the clutch 103 has disengaged, the user can nevertheless return the interface 101 and inner cylinder 102 to the locked position, thus avoiding a scenario that would leave the lock in an unlocked state without immediate means of returning it to a locked state, thus allowing the property or asset to be re-secured without external intervention.
  • the fail-back coupling is achieved by the inclusion of a fixed outer cylinder 116 in which the interface 101 is disposed and a fallback coupling member 112.
  • the outer cylinder 116 is fixed in that it is incapable of independent rotation about the longitudinal axis 118.
  • the fallback coupling member 112 is disposed within a sixth cavity 205.
  • the sixth cavity 205 is a continuous space formed by the alignment of, along a radial plane, a recess in the outer cylinder 116 and an opening spanning the full thickness of the interface 101.
  • the fail-back coupling member 112 is bias radially outwards towards the outer cylinder 116 by a resilient means 113 such as a compression spring as depicted in Figs. 2A-2D.
  • the recess of the outer cylinder 116 when rotated away from the locked position, the recess of the outer cylinder 116 ceases to be aligned and accordingly is no longer continuous with the opening on the interface 101 , thus giving rise to a sixth cavity 205 formed by the opening of the interface 101 and an opening spanning the full thickness of the inner cylinder 102.
  • the fail-back coupling member 112 having been displaced from it position within the recess of the outer cylinder 118, migrates radially inwards towards the longitudinal axis 118 into the sixth cavity 205.
  • the fail-back coupling member 112 effectively enforces coupling between the aforementioned even when the clutch 103 has returned to the disengage position as depicted in Fig. 2D. It should be noted that for the purposes of enforcing coupling, a recess in place of the opening on the inner cylinder 102 is sufficient to enforce the coupling so long as it is sufficient depth to adequately accommodate a sufficient length of the fail-back coupling member 112.
  • the fail-back coupling is maintained till the inner cylinder 102 and interface 101 are rotated back to the locked position where the recess of the outer cylinder 116 is aligned with the opening on the interface 101 , giving rise once again to the fifth cavity 206 which results in the bias fail-back coupling member migrating into fifth cavity 205 by way of the resilient means 113 thus disengaging the fail-back coupling.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

La présente invention concerne un ensemble verrou électromécanique comprenant une interface pouvant tourner autour d'un axe longitudinal, un cylindre interne disposé à l'intérieur de l'interface et pouvant tourner autour de l'axe longitudinal, un embrayage disposé à l'intérieur du cylindre interne et pouvant tourner entre une position de désolidarisation et une position de mise en prise et un moteur conçu pour faire tourner l'embrayage vers la position de mise ne prise. L'embrayage est sollicité vers la position de désolidarisation. Le moteur est configuré pour surmonter la sollicitation et faire tourner l'embrayage de la position de désolidarisation à la position de mise en prise. Dans la position de mise en prise, l'embrayage place l'ensemble verrou dans un état mécaniquement non verrouillé en appliquant le couplage rotatif du cylindre interne à l'interface. Lorsque le couple provenant du moteur n'est plus alimenté, l'embrayage est spontanément ramené à la position de désolidarisation par la libération d'énergie mécanique stockée à partir du moyen de sollicitation.
PCT/SG2020/050198 2020-04-01 2020-04-01 Ensemble verrou électromécanique, et son procédé de fonctionnement WO2021201767A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SG2020/050198 WO2021201767A1 (fr) 2020-04-01 2020-04-01 Ensemble verrou électromécanique, et son procédé de fonctionnement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2020/050198 WO2021201767A1 (fr) 2020-04-01 2020-04-01 Ensemble verrou électromécanique, et son procédé de fonctionnement

Publications (1)

Publication Number Publication Date
WO2021201767A1 true WO2021201767A1 (fr) 2021-10-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4269725A1 (fr) * 2022-04-29 2023-11-01 iLOQ Oy Cylindre de serrure électromécanique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598909B2 (en) * 2001-10-15 2003-07-29 Ez Trend Technology Co., Ltd. Electric door lock
WO2018083276A1 (fr) * 2016-11-04 2018-05-11 Huf Hülsbeck & Fürst Gmbh & Co. Kg Dispositif de fermeture
US10145147B2 (en) * 2016-03-21 2018-12-04 Salto Systems S.L. Low-consumption clutch actuating mechanism for electronic cylinders in locks and method for operating the same
CN209855417U (zh) * 2018-12-12 2019-12-27 青岛凯福智能科技有限公司 一种自动复位锁芯

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598909B2 (en) * 2001-10-15 2003-07-29 Ez Trend Technology Co., Ltd. Electric door lock
US10145147B2 (en) * 2016-03-21 2018-12-04 Salto Systems S.L. Low-consumption clutch actuating mechanism for electronic cylinders in locks and method for operating the same
WO2018083276A1 (fr) * 2016-11-04 2018-05-11 Huf Hülsbeck & Fürst Gmbh & Co. Kg Dispositif de fermeture
CN209855417U (zh) * 2018-12-12 2019-12-27 青岛凯福智能科技有限公司 一种自动复位锁芯

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4269725A1 (fr) * 2022-04-29 2023-11-01 iLOQ Oy Cylindre de serrure électromécanique
WO2023209066A1 (fr) * 2022-04-29 2023-11-02 Iloq Oy Barillet de serrure électromécanique

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