Electric lock, locking / unlocking device and handle lock

Abstract

To provide an electric lock that does not require a physical key, a locking / unlocking device, and a handle lock equipped with the same, which allow an operator (user) to more easily resolve an abnormal state even in the abnormal state where a dead bolt cannot be moved.SOLUTION: An electric lock 100 capable of operating a dead bolt 32 that locks / unlocks a door DR comprises: an information input part 102; and emergency locking / unlocking means 200 that resolves the abnormal state when an abnormality occurs in a movement of the dead bolt 32. The emergency locking / unlocking means 200 includes: a manual operation part 220; power transmission means 202 capable of transmitting a power of the manual operation part 220 to the dead bolt; switching means 210 that switches a transmission state and a cut-off state of the power by the power transmission means 202; and a motor 201 which is a driving source of the switching means 210.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an electric lock, a locking / unlocking device, and a handle lock. [Background technology]

[0002] Conventionally, there has been known an electric lock that can operate a deadbolt and lock / unlock a door, etc., without using a physical key, simply by authenticating the lock by entering a PIN number, for example (see, for example, Patent Document 1).

[0003] The electric lock described in Patent Document 1 performs authentication from the outdoor side by inputting a PIN number using a numeric keypad, and if authentication is successful, operates the deadbolt to the unlocking or locking side using a motor. Also, from the indoor side, the deadbolt is operated to the unlocking or locking side by manually operating a thumb turn.

[0004] Such electronic locks do not require physical keys, and therefore have the advantage that when they are installed in rental properties, for example, managers and others can more easily manage the electronic locks. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2021-123948 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, with conventional electric locks that do not require a physical key, if the deadbolt, which is moved by a motor, stops midway through the locking / unlocking operation, particularly from outside the room, there is no other way to lock or unlock the door, and it is necessary to ask the electric lock installer to lock or unlock the door, which can be time-consuming.

[0007] Specifically, the door on which the electric lock is installed may become distorted due to aging or due to the condition of the installation, causing it to become misaligned with the door frame (such as the door dropping down relative to the door frame). As a result, the trajectory of the deadbolt's movement as it advances and retreats from the strike (recess) installed on the door frame (entranceway, room, etc.) becomes misaligned from its original position. In this state, if the deadbolt is caused to protrude (advance) relative to the strike or retreat from the strike by the motor, it may interfere with the inside of the strike midway through its movement, making it physically impossible to move in either direction. Alternatively, if the deadbolt interferes with the strike, the movement of the deadbolt by the motor may be stopped as a control error.

[0008] In such a case, since manual locking and unlocking using a physical key is not possible, there is no option but to wait for the electric lock installer to lock and unlock the door, which entails time, effort and cost.

[0009] The present invention has been made to solve such conventional problems, and aims to provide an electric lock that does not require a physical key, and that allows the operator (user) to easily resolve an abnormal state even if an abnormal state occurs in which the deadbolt cannot be moved, a locking / unlocking device, and a handle lock equipped with the same. [Means for solving the problem]

[0010] The present invention relates to an electric lock capable of operating a deadbolt that locks and unlocks a door from one side of the door, comprising an information input unit and emergency locking / unlocking means for resolving any abnormality that may occur in the operation of the deadbolt, the emergency locking / unlocking means comprising a manual operating unit provided on the one side, power transmission means capable of transmitting the power of the manual operating unit to the deadbolt, switching means for switching between a power transmission state and a cut-off state of the power transmitted by the power transmission means, and a motor serving as a drive source for the switching means.

[0011] The present invention also relates to a locking / unlocking device having the above electric lock and a lock case housed in the door and equipped with the deadbolt.

[0012] The present invention also relates to a handle lock equipped with the above locking / unlocking device. Effect of the Invention

[0013] According to the present invention, it is possible to provide an electric lock that does not require a physical key and that allows an operator (user) to easily resolve an abnormal state even if an abnormal state occurs in which the deadbolt cannot be moved, a locking / unlocking device, and a handle lock equipped with the same. [Brief description of the drawings]

[0014] [Figure 1] 1 is a diagram showing an example of installation of a handle lock according to an embodiment of the present invention. FIG. [Diagram 2] 2 is a front view showing the inside of the lock case according to the present embodiment in a see-through manner. FIG. [Diagram 3] FIG. 2 is a front view showing the inside of the electric lock according to the present embodiment. [Figure 4] These figures explain the emergency locking / unlocking means of this embodiment, (A) an oblique view showing the inside of the outdoor case 70, (B) a front view showing the main parts of the emergency locking / unlocking means, (C) a side view showing the main parts of the emergency locking / unlocking means, and (D) a transparent front view of the lock case as seen from the outside of the room. [Diagram 5] 1A to 1C are schematic diagrams showing a portion of the emergency locking / unlocking means according to the present embodiment, in which (A) is a front view, (B) is a side view, and (C) is a cross-sectional view. [Figure 6] 1A to 1D are diagrams for explaining the switching means according to the present embodiment, in which (A) is an external perspective view of the worm wheel, (B) to (D) are front views of the worm gear, and (E) to (G) are side views of the connection portion between the worm wheel and the connection cam. [Figure 7] FIG. 13 is a diagram showing an emergency locking / unlocking means in a normal mode. [Figure 8] FIG. 13 is a diagram showing an emergency locking / unlocking means in emergency mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The electric lock 100 according to this embodiment will be described in detail below with reference to the drawings. In this embodiment, the electric lock 100 included in the handle lock 10 will be described as an example. More specifically, the handle lock 10 of this embodiment includes a locking / unlocking mechanism that locks and unlocks by operating a deadbolt, and a locking / unlocking device 150 that is composed of the electric lock 100 that operates the deadbolt. The locking / unlocking mechanism is, for example, a lock case (locking device) 30 that is housed in the door DR.

[0016] In the following, the directions of the electric lock 100 and the locking / unlocking device 150 will be explained based on the state in which the electric lock 100 is attached to a door DR, etc. Specifically, the vertical direction is defined as the height direction H, the direction perpendicular to the vertical direction and in which the deadbolt 32 advances and retreats is defined as the width direction W, and the direction perpendicular to both the height direction H and the width direction W is defined as the depth direction D.

[0017] <Overall composition> First, the overall configuration of the handle lock 10 will be described with reference to Fig. 1. Fig. 1 shows an example of installation of the handle lock 10 according to this embodiment, with Fig. 1(A) being an external perspective view from the outside of the room and Fig. 1(B) being an external perspective view from the inside of the room.

[0018] The handle lock 10 is composed of a lock case (lock device) 30 that is fitted inside a door DR such as an entrance or a room, an exterior case 70 that is attached to the exterior side of the door DR, and an interior case 90 that is attached to the interior side of the door.

[0019] The outdoor case 70 is equipped with an operable outdoor handle (first handle) 72 and an electric lock 100 arranged above the handle 72, and the indoor case 90 is equipped with an operable indoor handle (second handle) 92 and a thumb turn 94 arranged above the indoor handle 92.

[0020] This handle lock 10 allows the deadbolt 32 of the lock case 30 to be extended or retracted by locking / unlocking the electric lock 100 from the outside of the room, or by locking / unlocking the thumb turn 94 from the inside of the room.

[0021] Specifically, when the electric lock 100 or the thumb turn 94 is shifted from an unlocked state to a locked state, the deadbolt 32 protrudes from the end of the door DR and fits into a strike (recess) provided in the entranceway or room, entering the locked state, and the door DR is locked. On the other hand, when the electric lock 100 or the thumb turn 94 is shifted from a locked state to an unlocked state, the deadbolt 32 retreats from the strike into the lock case 30, entering the unlocked state, and the door DR is unlocked.

[0022] In addition, the handle lock 10 can be released from the temporary lock applied by the latch 34 of the lock case 30 by pulling the outdoor handle 72 from the outside of the room (pulling the outdoor handle 72 toward you) or pushing the indoor handle 92 from the inside of the room (pushing the indoor handle 92 toward the rear).

[0023] In this example, when the exterior handle 72 is pulled or the interior handle 92 is pushed, the temporary lock by the latch 34 is released and the door DR can be opened to the exterior side, but the present invention is not limited to this, and the temporary lock by the latch 34 may be released and the door DR can be opened to the interior side when the exterior handle 72 is pushed or the interior handle 92 is pulled. Also, the handle lock 10 may be a right-handed locking device or a left-handed locking device.

[0024] The handle lock 10 shown in Figure 1 is a push-pull type handle lock that allows the door DR to be opened and closed by pushing and pulling the outdoor handle 72 or the indoor handle 92, but by attaching a lever-shaped handle (not shown) instead of the outdoor case 70 and the indoor case 90, it is possible to change it to a lever-type handle lock that allows the door to be opened and closed by rotating the lever.

[0025] <Locking / Unlocking Device> Next, the locking / unlocking device 150 of this embodiment will be described. The locking / unlocking device 150 is composed of a locking / unlocking mechanism and an electric lock 100. The locking / unlocking mechanism is, for example, a lock case (locking device) 30 housed in the door DR. The locking / unlocking device 150 of this embodiment can protrude or retract the deadbolt 32 of the locking / unlocking mechanism (lock case 30) by operating the electric lock 100 from the outside of the room. As already mentioned, the lock case 30 of this embodiment can also perform a locking / unlocking operation (manual operation) of the thumb turn 94 from the inside of the room, which allows the deadbolt 32 to protrude or retract.

[0026] <Locking / unlocking device / lock case> The lock case 30 will be described with reference to Fig. 2. Fig. 2 is a see-through view of the inside of the lock case 30, for example a front view as seen from the outside of the room.

[0027] The lock case 30 comprises a box-shaped outer case 31, and the inner space of this outer case 31 houses a deadbolt actuator 36 that can set the deadbolt 32 in a locked or unlocked state, and a latch actuator 38 that can set the latch 34 in a provisionally locked or unlocked state. Note that the structure of the lock case 30 described below is not a feature of the present invention, and is a conventionally known structure, so a detailed description will be omitted.

[0028] <Lock case / deadbolt drive unit> The deadbolt drive unit 36 ​​is equipped with a body adapter (power input means) 40 to which power from the electric lock 100 of the outdoor case 70, power from the thumb turn 94 of the indoor case 90, or power from the emergency locking / unlocking means 200 is input, and a deadbolt power conversion unit 42 which converts the rotational motion of this body adapter 40 into linear motion of the deadbolt 32. The deadbolt 32 can be extended or retracted in the left-right direction in Figure 2 by either locking / unlocking the electric lock 100 from the outside, locking / unlocking the thumb turn 94 from the inside, or locking / unlocking the emergency locking / unlocking means 200, thereby placing the door DR in a locked or unlocked state.

[0029] <Lock case / latch drive unit> The latch drive unit 38 comprises a first latch cam (first power input means) 44a to which power is input from the outdoor handle 72 of the outdoor case 70, a second latch cam (second power input means) 44b located behind the first latch cam 44a in Figure 2 and to which power is input from the indoor handle 92 of the indoor case 90, and a latch control unit 46 that can put the latch 34 in a temporary locked or unlocked state based on the rotational movement of these first and second latch cams 44a, 44b, and the temporary locked state of the latch 34 can be released by pulling the outdoor handle 72 from the outside of the room or pushing the indoor handle 92 from the inside of the room.

[0030] <Locking / unlocking device / electric lock> The locking / unlocking device 150 and the electric lock 100 of this embodiment will be described with reference to Fig. 1 and Fig. 3 to Fig. 6. Fig. 3 is a perspective view showing the main parts of the electric lock 100, and is a perspective front view seen from the inside of the room. Fig. 4 is a view showing an outline of the emergency locking / unlocking means 200, which is a component of the electric lock 100, and Fig. 4(A) is an external perspective view of the outdoor handle 72 with the outdoor case 70 removed, Fig. 4(B) is a front view of the emergency locking / unlocking means 200, Fig. 4(C) is a side view of Fig. 4(B), and Fig. 4(D) is a perspective front view of the lock case 30 seen from the outside of the room. For convenience of explanation, Figs. 4(B) and (C) show only the components necessary for the explanation of the emergency locking / unlocking means 200.

[0031] First, referring to FIG. 1, the electric lock 100 has an information input unit 102 exposed from the outdoor case 70 and a display unit 106. The information input unit 102 includes, for example, a numeric keypad, a touch panel, a card reader, etc., and can accept operations related to the operation of the electric lock 100 and the locking / unlocking mechanism (lock case 30). The electric lock 100 has authentication information for determining the validity of the locking / unlocking operation, and an operator (user) who performs the locking / unlocking operation inputs locking / unlocking information (unlocking information or locking information) for checking against the authentication information via the information input unit 102 and a locking / unlocking command (unlocking command or locking command) that instructs locking / unlocking. That is, the electric lock 100 and the locking / unlocking device 150 of this embodiment are, for example, a keyless electric lock and a keyless locking / unlocking device that can lock and unlock without using a physical key.

[0032] Display unit 106 is configured, for example, by a 7-segment display device or a touch panel, and is capable of displaying, for example, information input from information input unit 102, as well as various messages such as operating instructions (guides) and various errors.

[0033] 3 and 4(C), the electric lock 100 has a power supply unit 101 arranged inside the door DR, on the indoor side, or in the outdoor case 70, a control unit 103, a motor (main motor) 104, a detection unit 105, an origin position sensor 107, gears 108 (108A to 108C), a gear clutch 109, a drive cam, and an emergency locking / unlocking means 200. The electric lock 100 can operate a deadbolt 32 that locks and unlocks the door DR from one side (the outdoor side) of the door DR.

[0034] The power supply unit 101 is provided on the indoor side of the door DR (for example, inside the indoor case 90). The power supply is, for example, a battery. The motor 104 is the drive source for the deadbolt 32. More specifically, the motor 104 generates power that is input to the deadbolt drive unit 36 ​​(body adapter (power input means) 40) of the lock case 30. Drive of the motor 104 moves the deadbolt 32 so as to advance or retreat relative to the strike.

[0035] The control unit 103 is provided, for example, inside the door DR, and performs authentication related to the locking / unlocking operation, outputs various control commands, supplies power, etc. When performing the locking / unlocking operation from the outside of the room, the control unit 103 collates the input information (locking / unlocking information and locking / unlocking commands) received via the information input unit 102 with the authentication information held by the electric lock 100, and if the input information matches the authentication information, it permits the locking / unlocking operation and outputs a command to drive the motor 104. The deadbolt 32 of the lock case 30 moves in the unlocking or locking direction as a result of driving the motor 104. Furthermore, the control unit 103 rejects the locking / unlocking operation if the input information and authentication information do not match as a result of collating the information.

[0036] The motor 104, the gear 108, and the gear clutch 109 are provided, for example, inside the door DR, and the gears 108A to 108C transmit the power of the motor 104 to the gear clutch 109. The gear clutch 109 rotates the drive shaft 112 and the connecting shaft 111. The drive shaft 112 rotates the body adapter (power input means) 40 of the deadbolt driving unit 36 ​​via a drive cam. The connecting shaft 111 extends in the depth direction D and is provided so that a part of it protrudes from the inside of the door DR to the outside of the room (inside the outside case 70), and one end of the connecting shaft 111 on the outside of the room is configured to be connectable to the emergency locking / unlocking means 200 described later. On the other end on the inside of the room, flat, approximately L-shaped operating units 111A and 111B having two arms are provided (see FIG. 4). The drive shaft 112 is configured to rotate coaxially with the connecting shaft 111.

[0037] 3, the detection unit 105 is a deadbolt state sensor (switch) that detects the state of the deadbolt 32. In detail, the deadbolt state sensor 105 is a switch that can be switched between three states: ON1 in an unlocked state, ON2 in a locked state, and OFF, and the switch of the detection unit 105 is switched between ON1, ON2, and OFF by the rotation of the connecting shaft 111 (operation units 111A, 111B). ON1 and ON2 are ON states in which the direction of rotation of the gear 108C and the gear clutch 109 by the motor 104 is switched between forward and reverse, and OFF is a state in which the motor 104 stops driving.

[0038] For example, when an unlocking operation is performed in the locked state, the connecting shaft 111 performs an unlocking operation by rotating counterclockwise in Fig. 3 to a predetermined position, which completes the withdrawal (storage) of the deadbolt 32 and sets the door in an unlocked state. In the unlocked state, as shown in Fig. 3(A), for example, the deadbolt state sensor 105 is switched to ON1 by one of the operating parts 111A. When it is ON1, the motor 104 rotates the gear 108C and the gear clutch 109 in the clockwise direction in Fig. 3 (this is referred to as "forward rotation").

[0039] When a locking operation is performed in the unlocked state (deadbolt status sensor 105 is ON1), the motor 104 rotates the gear 108C and the gear clutch 109 in the forward direction, and the connecting shaft 111 rotates to a predetermined position to perform a locking operation, whereby the deadbolt 32 advances (projects) and the door is locked. In the locked state, as shown in Fig. 3(B), the other operating unit 111B switches the deadbolt status sensor 105 to ON2, for example. When ON2, the motor 104 rotates the gear 108C and the gear clutch 109 in the counterclockwise direction in Fig. 3 (this is referred to as "reverse rotation").

[0040] The origin position sensor 107 is a sensor (switch) that detects that the parts of the electric lock 100, such as the gear 108, the gear clutch 109, the connecting shaft 111, and the drive shaft 112, are in the origin position. When the indoor case 90 is locked or unlocked using the thumb turn 94, only the connecting shaft 111 and the drive shaft 112 rotate (the origin position sensor 107 detects that the gear 108C and the gear clutch 109 are in the origin position). On the other hand, when the motor 104 is used to lock or unlock the door, the gear 108, the gear clutch 109, etc. also rotate together with the connecting shaft 111 (the origin position sensor 107 detects that the gear 108C and the gear clutch 109 are not in the origin position), and so these must be returned to their origin positions. Specifically, after the locking operation (after the gear 108C and the gear clutch 109 rotate forward together with the connecting shaft 111), the detection unit 105 switches to ON2, which triggers the motor 104 to rotate in the reverse direction, causing the gear 108C and the gear clutch 109 to rotate backwards and return both to their original positions. Also, after the unlocking operation (after the gear 108C and the gear clutch 109 rotate backward together with the connecting shaft 111), the detection unit 105 switches to ON1, which triggers the motor 104 to rotate in the reverse direction, causing the gear 108C and the gear clutch 109 to rotate forwards and return both to their original positions. In addition to the above, sensors are provided to detect the states of various components of the electric lock 100, the locking / unlocking device 150, or the handle lock 10, but their explanations are omitted here.

[0041] <Locking / unlocking device / electric lock / emergency lock / unlocking method> The electric lock 100 has an emergency locking / unlocking means 200. As already described, the electric lock 100 of the present embodiment is, for example, a keyless electric lock that can lock and unlock without using a physical key. By allowing locking and unlocking to be performed without using a physical key, when the electric lock 100 is installed on the front door of a property that requires lock management by a manager, such as an apartment building or rental house, the manager can easily manage the lock.

[0042] On the other hand, the door DR on which the electric lock 100 is installed may become distorted due to aging or installation conditions, causing a positional deviation from the door frame (such as the door DR dropping downward relative to the door frame). As a result, the movement trajectory of the deadbolt 32 moving forward and backward in the width direction W relative to the strike (recess) provided on the door frame side (entranceway, room, etc.) becomes misaligned from its original position. In this state, if the deadbolt 32 is caused to protrude (advance) relative to the strike or retreat from the strike by the motor 104, it may interfere with the door frame (inside the strike) during the movement.

[0043] In the case of an electronic lock 100 in which the motor 104 drives the deadbolt 32, the motor 104 often stops driving if an abnormality occurs during operation of the deadbolt 32. Specifically, for example, if resistance equal to or exceeds a predetermined value occurs due to interference with a door frame or the like during operation of the deadbolt 32, it is often detected (determined) that an abnormality in the operation of the deadbolt 32 occurs, and control such as stopping the motor 104 that drives the deadbolt 32 is performed.

[0044] In this case, since manual locking and unlocking using a physical key or the like is not possible, there is no option but to wait for the installer of the electric lock 100 to lock and unlock the door, which entails problems of time, effort and cost.

[0045] Therefore, the electric lock 100 of this embodiment is provided with an emergency locking / unlocking means 200 that resolves any abnormality that may occur in the operation of the deadbolt 32. Specifically, if the operation of the deadbolt 32 caused by the motor 104 stops midway through its movement (if the motor 104 stops its operation), the deadbolt 32 can be moved manually by the emergency locking / unlocking means 200.

[0046] 4, the emergency locking / unlocking means 200 has an emergency motor 201, an emergency power transmission means 202, a switching means 210, and a manual operation unit 220. The emergency locking / unlocking means 200 is provided, for example, on the outdoor side of the door DR, for example, inside the outdoor case 70.

[0047] Fig. 5 is a diagram showing an extracted part of the emergency locking / unlocking means 200. Fig. 5(A) is a front view corresponding to Fig. 4(B) showing a part of the switching means 210 and the emergency power transmission means 202, Fig. 5(B) is a side view corresponding to Fig. 4(C) showing the manual operation unit 220, a part of the switching means 210 and the emergency power transmission means 202, and Fig. 5(C) is a partial cross-sectional view of Fig. 4(C) showing the manual operation unit 220 and the emergency power transmission means 202.

[0048] As shown in Fig. 4(C), Fig. 5(B), and Fig. 5(C), the manual operation unit 220 has a knob 222 provided at one end (end on the outside of the room) of a rotating shaft 221 extending in the depth direction D, and an engagement protrusion 225 provided at the other end (end on the door DR side) of the rotating shaft 221. The knob 222 may have any shape as long as it can be manually operated directly from the outside of the room by an operator (user, etc.), but in this embodiment, as an example, it is configured in a substantially U-shape (Fig. 4(A)), and is provided to be freely swingable on a swing shaft 223 that penetrates the base part 224 in the width direction W. As a result, the knob 222 is configured to be changeable between a storage position that is substantially horizontal (parallel) to the door DR and an upright position that is substantially perpendicular to the door DR. The rotating shaft 221 is rotatably inserted into a knob support part 226 that is fixed to the outdoor case 70, for example.

[0049] As shown in Fig. 5(A), the engagement protrusion 225 has, for example, a rectangular prism (approximately rectangular parallelepiped) shape, and is provided at the other end of the rotating shaft 221 so that its central axis extending in the depth direction D coincides with the central axis C of the rotating shaft 221. Note that the knob 222 is omitted from illustration in Fig. 5(A). The knob 222 and the engagement protrusion 225 are fixed to the rotating shaft 221, and when the knob 222 is rotated, the rotating shaft 221 and the engagement protrusion 225 rotate according to the direction and amount of rotation. The positions of the four corners CN of the engagement protrusion 225 rotate according to the amount of rotation of the knob 222.

[0050] Referring to FIG. 5, the emergency power transmission means 202 is a means capable of transmitting the power of the manual operation unit 220 to the deadbolt 32, and has a connection holder 203, a connection ring 204, and a coil spring 205, and is configured to be connectable to the connecting shaft 111 and the drive shaft 112.

[0051] As shown in Figures 5(A) and 5(B), the connection holder 203 is a cylindrical member, and a connection cam support portion 206 that supports a connection cam 214 (described later) is provided on its outer circumferential surface. As shown in Figure 5(C), the connection ring 204, a biasing member (e.g., a coil spring) 205, and a part of the connecting shaft 111 are housed inside (on the inner circumferential side) of the connection holder 203. The connecting shaft 111 has a rectangular column shape that is long in the depth direction D, and the length of the connecting shaft 111 in the depth direction D is equal to the length of the connection holder 203. The connecting shaft 111 is provided so that the central axis extending in the depth direction D coincides with the central axis C of the rotation shaft 221.

[0052] The connection ring 204 is housed in the inner circumference of the connection holder 203 with a part of the connecting shaft 111 inserted into its inner circumference. The length of the connection ring 204 in the depth direction D is shorter than the length of the connection holder 203. The coil spring 205 is provided on the outer circumference of the connecting shaft 111 and is compressed between the end of the connection ring 204 on the door DR side and a ring-shaped fixing member 203A provided on the end of the connection holder 203 on the door DR side. The connection ring 204 is constantly biased in the direction of the knob 222 by this coil spring 205.

[0053] 5(C), the connection holder 203 is accommodated in a cylindrical connection holder support part 230 fixed to the outdoor case 70, for example, and is configured to be movable (slidable) in the depth direction D with respect to the connection holder support part 230. Furthermore, the connection holder 203 is configured to be movable in the depth direction D relative to the connecting shaft 111 attached to the door DR, and the connecting shaft 111 is configured to be rotatable around the central axis C with respect to the connection holder 203. The connection ring 204 is biased in the knob 222 direction by the coil spring 205, but the connection ring 204 and the connection holder 203 are provided so as to be movable (slidable) relative to each other in the depth direction D. Furthermore, the connection ring 204 is configured to be rotatable around the central axis C with respect to the connection holder 203.

[0054] 5(A), the outer periphery of the connection ring 204 is cylindrical along the inner periphery of the connection holder 203, but the hole 207 penetrating in the depth direction D is prismatic along the shape of the connecting shaft 111. That is, the connection ring 204 is configured such that the outer periphery side is circular and the inner periphery side is substantially rectangular in a cross section perpendicular to the central axis C direction. The cross section of the hole 207 is similar to the cross section perpendicular to the central axis C direction of the engagement protrusion 225 of the manual operation unit 220, and its size is slightly larger than that of the engagement protrusion 225. More specifically, the sizes of the engagement protrusions 225 and the hole 207 are set such that the engagement protrusion 225 can be accommodated in the hole 207 when the positions of the four corners CN of the engagement protrusion 225 and the four corners CN of the hole 207 are aligned, but the engagement protrusion 225 cannot be accommodated in the hole 207 when the positions of the four corners CN of the engagement protrusion 225 and the four corners CN of the hole 207 are not aligned.

[0055] 5(C), the length of the engagement protrusion 225 of the manual operation unit 220 in the depth direction D is shorter than the length of the connecting ring 204, and when the engagement protrusion 225 is housed in the hole 207, the engagement protrusion 225 and the tip of the connecting shaft 111 are housed in the inner circumference of the connecting ring 204. When the knob 222 is rotated in this state, the engagement protrusion 225 and the connecting shaft 111 rotate together relative to the connection holder 203 with the engagement protrusion 225 and the connecting shaft 111 fitted into the hole 207 of the connecting ring 204.

[0056] A drive shaft 112 that rotates integrally with the connecting shaft 111 is connected to the end of the connecting shaft 111 on the door DR side, and the drive shaft 112 is connected to the body adapter 40 of the lock case 30 (Figs. 4(C) and (D)). In other words, when the engagement projection 225 is housed in the hole 207 of the connecting ring 204, the body adapter 40 can be rotated by operating the manual operation unit 220 (knob 222), and as a result, the deadbolt 32 can be moved.

[0057] The electric lock 100 can be switched between a normal mode and an emergency mode. The normal mode is a mode in which there is no abnormality in the operation of the deadbolt 32, specifically, in which the deadbolt 32 can and does operate normally, advancing or retreating in response to a strike as instructed by the control unit 103.

[0058] On the other hand, the emergency mode is a mode that is switched to when an abnormality in the deadbolt 32 is detected. When the electric lock 100 is installed in a building or the like, the initial setting is the normal mode, and thereafter, the state of the deadbolt 32 is constantly detected by the detection unit (deadbolt state sensor) 105 that detects the state of the deadbolt. Then, when the deadbolt state sensor 105 detects an abnormal operation of the deadbolt 32, the control unit 103 switches the electric lock 100 to the emergency mode. Specifically, the abnormal operation of the deadbolt 32 is a state in which the deadbolt 32 is stopped midway through the advancement or retreat of the deadbolt 32 due to a locking / unlocking operation being performed (locking / unlocking information and authentication information match, and a locking / unlocking command is output). More specifically, for example, this is a case in which the deadbolt state sensor 105 does not turn "on" even though a predetermined time has passed since an unlocking command was issued, or the deadbolt state sensor 105 does not turn "off" even though a predetermined time has passed since a locking command was issued.

[0059] The emergency mode is also a mode in which the operation abnormality of the deadbolt 32 can be eliminated by the emergency locking / unlocking means 200. In detail, the emergency locking / unlocking means 200 has a switching means 210 that switches between a transmission state and a cut-off state of the power by the emergency power transmission means 202, and an emergency motor 201 that serves as a drive source for the switching means 210. When the operation of the deadbolt 32 is normal (in the case of the normal mode), the control unit 103 sets the switching means 210 to a state (cut-off state) in which the power by the emergency power transmission means 202 is not transmitted, and when an abnormality occurs in the operation of the deadbolt 32 (emergency mode), the control unit 103 switches the switching means 210 to a state in which the power is transmitted by the emergency power transmission means 202. The switching between the cut-off state and the transmission state is performed by the emergency motor 201 dedicated to the emergency locking / unlocking means 200. The power source of the emergency motor 201 is shared with the power source of the motor 104 in the normal mode. When the emergency mode is entered, the control unit 103 stops the operation of the motor (main motor) 104.

[0060] The switching means 210 will be described with reference to Fig. 6. The switching means 210 is composed of, for example, a worm gear 211 and a connecting cam 214. Fig. 6(A) is an external perspective view of the worm wheel 213. Figs. 6(B) to 6(D) are front views of the switching means 210 as viewed from the outside of the room, and Figs. 6(E) to 6(G) are side views of the states of Figs. 6(B) to 6(D) as viewed from the center of the worm wheel 213 toward the connecting cam 214.

[0061] The worm gear 211 comprises a worm wheel 213 having gears provided on approximately half its circumference and a worm 212 that can be screwed onto the worm wheel 213, and the other half of the circumference is provided with a cam engagement surface 215 with which a connecting cam 214 engages.

[0062] The worm 212 is connected to a rotating shaft 201D of the emergency motor 201. When the emergency motor 201 is driven, the worm 212 and the worm wheel 213 rotate.

[0063] The connecting cam 214 is a frame member having arm portions 216 (see Figure 5) in which approximately rectangular members extending in a height direction H are arranged opposite each other in a width direction W, and a retaining portion 217 at one end (upper end) of the longitudinal direction (height direction H) that connects both arm portions 216 in the width direction W.

[0064] As shown in FIG. 6(E) to FIG. 6(G), the holding portion 217 of the connection cam 214 is configured to be slidable by clamping the cam engagement surface 215 of the worm wheel 213 from both sides in the depth direction D (thickness direction of the worm wheel 213). The cam engagement surface 215 is an arc-shaped inclined surface provided on the surface of the worm wheel 213. In this example, a part (about half the circumference) of the circumferential direction of the worm wheel 213 is cut in the thickness direction to form a thin-walled portion 213T, and an arc-shaped inclined surface is placed on the thin-walled portion (with a gap between the thin-walled portion). In other words, the cam engagement surface 215 portion has a double structure of the cam engagement surface 215 and the thin-walled portion in the thickness direction of the worm wheel 213, and a part of the holding portion 217 is inserted between them to clamp both sides (front and back) of the cam engagement surface 215 from both sides in the thickness direction of the worm wheel 213. 6(E) to 6(G), the cam engagement surface 215 is shown linearly developed. As the worm 212 and the worm wheel 213 rotate, the holding portion 217 moves along the circumferential direction of the worm wheel 213 while holding the cam engagement surface 215, and the position of the holding portion 217 in the depth direction D changes.

[0065] More specifically, in the cam engagement surface 215 of the worm wheel 213, if the position closest to the door DR in the depth direction D (thickness direction of the worm wheel 213) (the position where the thickness of the worm wheel 213 is thin) is the bottom 215D of the cam engagement surface 215 (inclined surface) and the side furthest from the door DR (the position where the thickness of the worm wheel 213 is thick) is the top 215U of the cam engagement surface 215 (inclined surface), Figures 6(B) and (E) show a state in which the retaining portion 217 is at the top 215U of the cam engagement surface 215, Figures 6(D) and (G) show a state in which the retaining portion 217 is at the bottom 215D of the cam engagement surface 215, and Figures 6(C) and (F) show a state in which the retaining portion 217 is midway between the top 215U and the bottom 215D of the cam engagement surface 215.

[0066] 5(B), the pair of arm portions 216 is supported by a swing shaft 219 extending in the width direction W so as to be swingable at one location between the tip portion 218 and the holding portion 217. This allows the connection cam 214 to swing around the swing shaft 219 so that the tip portion 218 and the holding portion 217 alternately advance and retreat in the depth direction D (perform a seesaw motion). In other words, when the position of the holding portion 217 in the depth direction D changes in response to the rotation of the worm wheel 213, the connection cam 214 swings around the swing shaft 219.

[0067] Further, a tip end 218 of the arm portion 216 is supported by a connection cam support portion 206 of the connection holder 203. The connection cam support portions 206 are provided on both sides of the width direction W (horizontal diameter direction) of the connection holder 203 (FIG. 5(A)), and each of the connection cam support portions 206 is composed of a clog-teeth-shaped protrusion provided at a predetermined distance apart in the depth direction D.

[0068] The two arms 216 of the connection cam 214 are provided to sandwich both sides of the connection holder 203 in the width direction W, and the tip 218 of each arm 216 is supported between the connection cam support parts 206 (clog-tooth-shaped protrusions). The arm 216 is a thin plate-like member that is roughly rectangular in side view (FIG. 5(B)) from the width direction W, and the tip 218 has a tapered shape (trapezoidal shape) in which the length of the short side of the rectangular shape (length in the depth direction D) becomes smaller toward the tip.

[0069] As the arm portion 216 moves in a seesaw motion as indicated by the arrow a in FIG. 5(B), the tip portion 218 pushes the connection cam support portion 206 to one side or the other in the depth direction D, thereby moving the connection holder 203 to one side or the other in the depth direction D as indicated by the arrow b.

[0070] More specifically, when the holding portion 217 of the connection cam 214 is at the uppermost portion 215U of the cam engagement surface 215 of the worm wheel 213, the tip portion 218 of the arm portion 216 is closest to the door DR and is separated from the knob 222. At this time, the tip portion 218 of the arm portion 216 pushes the connection cam support portion 206 of the connection holder 203 in a direction away from the knob 222 (a direction toward the door DR, rightward in FIG. 5(B)), whereby the connection holder 203 moves in a direction away from the knob 222 along the depth direction D. As a result, the end face in the depth direction D of the engagement protrusion 225 of the manual operation portion 220 and the connection holder 203 (end faces of the connecting shaft 111 and the connection ring 204 housed therein) are separated by a predetermined distance.

[0071] On the other hand, when the holding portion 217 of the connection cam 214 is at the lowermost portion 215D of the cam engagement surface 215, the tip portion 218 of the arm portion 216 is furthest from the door DR and closest to the knob 222. As a result, the tip portion 218 pushes the connection cam support portion 206 of the connection holder 203 in a direction approaching the knob 222 (leftward in FIG. 5(B)), and thus the connection holder 203 moves in a direction approaching the knob 222 along the depth direction D. As a result, the end face of the engagement projection 225 of the manual operation portion 220 comes into contact with the connection holder 203 (the end faces of the connecting shaft 111 and the connection ring 204 housed therein).

[0072] When the end face of the engagement protrusion 225 abuts against the end face of the connecting shaft 111 and the end face of the connecting ring 204, if the positions of the four corners CN of the engagement protrusion 225 and the four corners CN of the hole portion 207 of the connecting ring 204 are not aligned, the engagement protrusion 225 pushes the end face of the knob 222 side of the connecting ring 204 into the door DR (inside the room) in the depth direction D, but entry into the inner circumference of the connecting ring 204 is restricted.

[0073] On the other hand, when the four corners CN of the engagement projection 225 and the four corners CN of the hole 207 of the connecting ring 204 are aligned, the engagement projection 225 enters the hole 207, and the end faces of the engagement projection 225 and the connecting shaft 111 are butted together inside the connecting ring 204. Then, with the rectangular column-shaped engagement projection 225 and the connecting shaft 111 engaged with the inner peripheral surface of the connecting ring 204, the three rotate integrally inside the connection holder 203. The rotation of the connecting shaft 111 rotates the drive shaft 112 connected thereto, causing the body adapter 40 to rotate.

[0074] The control unit 103 does not drive the emergency motor 201 when the deadbolt 32 is operating normally (in the normal mode). In the normal mode, the holding portion 217 is at the top 215U of the cam engagement surface 215, and the emergency motor 201 is stopped, so the position of the holding portion 217 does not change, and the switching means 210 is in a state in which the power is not transmitted by the emergency power transmission means 202 (shut-off state). On the other hand, only when an abnormality occurs in the operation of the deadbolt 32 (emergency mode), the control unit 103 outputs a drive command to the emergency motor 201. This causes the worm gear 211 to operate, and the holding portion 217 moves to the bottom 215D of the cam engagement surface 215. As a result, only in the emergency mode, the switching means 210 switches to a state in which the power is transmitted by the emergency power transmission means 202.

[0075] <Operation of electric lock and locking / unlocking device> The operation of the electric lock 100 and the locking / unlocking device 150 will now be described. <In normal mode> 1, 3, and 4, the detection unit 105 detects whether the deadbolt 32 is unlocked (detection unit 105 is ON1) or locked (detection unit 105 is ON2) by the rotation of the connecting shaft 111. If the deadbolt 32 is operating normally, the control unit 103 operates the electric lock 100 in the normal mode.

[0076] In the normal mode, the control unit 103 moves the deadbolt 32 by the motor 104. For example, when the deadbolt 32 is in the unlocked state (FIG. 3(A)) and is to be locked from the outside of the room, the control unit 103 accepts input of information for locking (locking information) via the information input unit 102. In this case, authentication by the electric lock 100 is not required, and the locking information may be, for example, unique information indicating "locking" (authentication may be performed). When an operator who performs the locking / unlocking operation inputs the locking information via the information input unit 102 (for example, by operating the lock button on the numeric keypad or reading an IC card), the control unit 103 outputs a command to drive the motor 104 as a locking operation, and the gears 108A to 108C are rotated from the state shown in FIG. 3(A) by driving the motor 104, and the gear clutch 109 rotates the drive shaft 112 and the connecting shaft 111. In the unlocked state, the detection unit 105 is ON1, and when the motor 104 is driven for the locking operation, the gear 108C and the gear clutch 109 rotate forward. That is, the connecting shaft 111 rotates clockwise from FIG. 3(A) to the state shown in FIG. 3(B). The rotation of the drive shaft 112 and the connecting shaft 111 rotates the body adapter 40 via the drive cam. The rotational motion of the body adapter 40 is converted into linear motion by the deadbolt power conversion unit 42, and the deadbolt 32 of the lock case 30 moves (projects) in the locking direction, resulting in the locked state. When the connecting shaft 111 performs the locking operation, the operation unit 111B switches the switch of the detection unit 105 to ON2, as shown in FIG. 3(B).

[0077] When the deadbolt 32 is in a locked state (FIG. 3(B)) and is to be unlocked from the outside of the room, the control unit 103 accepts input of information for unlocking (unlocking information and unlocking command) via the information input unit 102. When an operator performing the unlocking operation inputs the unlocking information and unlocking command via the information input unit 102 (for example, by operating the numeric keypad or reading an IC card), the control unit 103 compares the authentication information held in the storage unit of the electric lock 100 with the information input via the information input unit 102 (input information, unlocking information). If the authentication information and the unlocking information match and further a signal corresponding to the unlocking command (unlocking signal) is received, the control unit 103 outputs a command to drive the motor 104, and the driving of the motor 104 rotates the gears 108A to 108C from the state shown in FIG. 3(B), and the gear clutch 109 rotates the drive shaft 112 and the connecting shaft 111. In the locked state, the detection unit 105 is ON2, and when the motor 104 is driven for an unlocking operation, the gear 108C and the gear clutch 109 rotate in the reverse direction (counterclockwise). That is, the connecting shaft 111 rotates counterclockwise from FIG. 3(B) to the state of FIG. 3(A). The rotation of the drive shaft 112 and the connecting shaft 111 rotates the body adapter 40 via the drive cam. The rotational motion of the body adapter 40 is converted into linear motion by the deadbolt power conversion unit 42, and the body adapter 40 of the lock case 30 rotates. The rotational motion of the body adapter 40 is converted into linear motion by the deadbolt power conversion unit 42, and the deadbolt 32 moves in the unlocking direction, entering the unlocked state.

[0078] For example, when the exterior handle 72 of the exterior case 70 is pulled toward the user (pulling operation), the power is converted into rotational motion of a lever cam (not shown) and input (transmitted) to the first latch cam 44a of the lock case 30 via its shaft (not shown). When the first latch cam 44a of the lock case 30 rotates, the latch 34 is allowed to retract into the lock case 30. In other words, if the latch 34 is in the unlocked state and the deadbolt 32 is in the unlocked state, the door DR can be opened.

[0079] Furthermore, if the control unit 103 collates the input information with the authentication information and finds that the two do not match, it rejects the locking / unlocking operation and keeps the deadbolt 32 locked.

[0080] When the deadbolt 32 operates normally (in the normal mode), the control unit 103 does not drive the emergency motor 201. In the normal mode, the holding portion 217 is at the uppermost portion 215U of the cam engagement surface 215, and the switching means 210 is in a state in which the power is not transmitted by the emergency power transmission means 202 (shut-off state).

[0081] Figure 7 shows the emergency locking / unlocking means 200 in normal mode, with Figure 7(A) being a plan view of the switching means 210 corresponding to Figure 6(B), Figure 7(B) being a side view corresponding to Figure 6(E), Figure 7(C) being a side view corresponding to Figure 5(B), and Figure 7(D) being a cross-sectional view corresponding to Figure 5(C).

[0082] When the holding portion 217 is at the top 215U of the cam engagement surface 215, the tip 218 of the arm portion 216 is closest to the door DR and is separated from the knob 222. At this time, the tip 218 of the arm portion 216 presses the connection cam support portion 206 of the connection holder 203 in a direction away from the knob 222 (a direction toward the door DR, rightward in FIG. 7(C)), and the connection holder 203 is located in a direction away from the knob 222 in the depth direction D. A restricting portion 203S for reducing the inner diameter of the connection holder 203 is provided on the inner periphery of the opening on the knob 222 side of the connection holder 203, and the connection ring 204 is restricted from protruding from the connection holder 203 toward the knob 222 side. In addition, when the connection holder 203 moves in a direction away from the knob 222 in the depth direction D, the connection ring 204 is pushed in the same direction by the restricting portion 203S and moves.

[0083] As a result, the end face T1 of the engagement projection 225 of the manual operation portion 220 is spaced apart from the end face T2 of the connecting shaft 111 and the end face T3 of the connection ring 204 by a predetermined distance GP.

[0084] In this case, the knob 222 can be rotated by the operator, but since the engagement projection 225 of the manual operation unit 220 and the end face of the connecting shaft 111 are spaced apart, the knob 222 rotates freely.

[0085] <In emergency mode> For example, when the deadbolt 32 is in a locked state and is to be unlocked from the outside of the room, the control unit 103 accepts input of unlocking information via the information input unit 102. The control unit 103 compares the input unlocking information with the authentication information, and if they match, the control unit 103 outputs a command to drive the motor 104.

[0086] The motor 104 moves the deadbolt 32 in the unlocking direction, but if the deadbolt 32 gets caught due to distortion of the door DR or the like and stops midway in the unlocking direction, the operation units 111A, 111B of the connecting shaft 111 cannot switch the detection unit 105 between ON1 and ON2. In other words, the detection unit 105 becomes "OFF" or "neither ON1 nor ON2", and detects an abnormal operation of the deadbolt 32. This causes the control unit 103 to switch the electric lock 100 to emergency mode and stop driving the motor 104.

[0087] The control unit 103 also displays (error display) on the display unit 106 that the deadbolt 32 is malfunctioning, and waits for the emergency locking / unlocking means 200 to accept an operation. The operator who has recognized the malfunction of the deadbolt 32 performs authentication work again, for example. That is, the operator inputs unlocking information and an unlocking command via the information input unit 102.

[0088] In the emergency mode, the control unit 103 collates the authentication information with the unlocking information, and if the two match and further receives a signal corresponding to an unlocking command (unlocking signal), outputs a drive command to the emergency motor 201. When the emergency motor 201 drives, the worm gear 211 operates, and the holding portion 217 of the connection cam 214 moves from the uppermost portion 215U to the lowermost portion 215D of the cam engagement surface 215. As a result, only in the emergency mode, the switching means 210 switches to a power transmission state by the emergency power transmission means 202.

[0089] Fig. 8 shows the emergency locking / unlocking means 200 in the emergency mode, Fig. 8(A) is a plan view of the switching means 210 corresponding to Fig. 6(D), Fig. 8(B) is a side view corresponding to Fig. 6(G), Fig. 8(D) is a side view corresponding to Fig. 5(B), and Fig. 8(F) and Fig. 8(I) are cross-sectional views corresponding to Fig. 5(C). Fig. 8(C), Fig. 8(E), and Fig. 8(H) are front views showing the knob 222 (manual operation unit 220) state in Fig. 8(D), Fig. 8(F), and Fig. 8(I), respectively, and Fig. 8(G) and Fig. 8(J) are front views of the emergency power transmission means 202 and the knob 222 seen from the drive shaft 112 (indoor side) direction in Fig. 8(F) and Fig. 8(I), respectively.

[0090] 8(A) and 8(B), when the holding portion 217 of the connection cam 214 moves to the lowermost portion 215D of the cam engagement surface 215, the tip portion 218 of the arm portion 216 moves to the farthest position from the door DR and close to the knob 222. As a result, the tip portion 218 pushes the connection cam support portion 206 of the connection holder 203 toward the knob 222, and the connection holder 203 moves in a direction approaching the knob 222. The connection holder 203 moves toward the knob 222 (leftward in FIGS. 8(D) and 8(F)) until the end face of the restriction portion 203S on the knob 222 side abuts against the face of the knob support portion 226 on the connection holder 203 side. As shown in FIG. 8(F), the engagement projection 225 of the manual operation unit 220 enters the inside of the connection holder 203 through the opening thereof, so that the end face T1 of the engagement projection 225 abuts against the end face T2 of the connecting shaft 111 and the end face T2 of the connection ring 204.

[0091] In Fig. 8(F), as an example, the positional relationship between the engagement protrusion 225 and the hole 207 of the connection ring 204 (as well as the connecting shaft 111) is such that the positions of the corners CN of both are misaligned, as shown in the abutment surface BS of Fig. 8(F) and Fig. 8(G). When the end face T1 of the engagement protrusion 225 abuts against the end faces T2 and T3 of the connecting shaft 111 and the connecting ring 204, if the positions of the four corners CN of the engagement protrusion 225 and the four corners CN of the hole 207 of the connecting ring 204 are not aligned, the engagement protrusion 225 enters the inside of the connection holder 203, while the entry into the inside of the connecting ring 204 is restricted. The engagement protrusion 225 pushes the end face T2 of the connecting ring 204 and the end face T3 of the connecting shaft 111 into the door DR (inside the room) in the depth direction D. The coil spring 205 contracts further, and the force biasing the connection ring 204 toward the knob 222 increases.

[0092] When the normal mode is switched to the emergency mode, the position (rotation state) of the knob 222 is arbitrary, and is not necessarily in the state shown in FIG. 8(E) or (F).

[0093] Although not shown in the figures, the worm wheel 213 has a switch operation protrusion provided on, for example, the back surface (surface facing the door DR). The switch operation protrusion is provided at a position where it can press (operate) a switch (motor off switch, not shown) that turns off the emergency motor 201 when the holding portion 217 moves to the bottommost portion 215D of the cam engagement surface 215. In other words, when the holding portion 217 moves to the bottommost portion 215D of the cam engagement surface 215, the switch operation protrusion presses (operates) the motor off switch, and the drive of the emergency motor 201 is stopped.

[0094] The operator opens, for example, the outdoor case 70 (for example, the emergency knob cover 70A (see FIG. 1(A))), exposes the knob 222, and operates it. With the end face T1 of the engagement protrusion 225 in contact with the end faces T2, T3 of the connecting shaft 111 and the connecting ring 204 as shown in FIG. 8(F), the operator rotates the knob 222 in any direction. When the positions of the four corners CN of the engagement protrusion 225 and the four corners CN of the hole 207 of the connecting ring 204 are aligned as shown in FIG. 8(I) and FIG. 8(J) in response to the rotation of the knob 222 by the operator, the engagement protrusion 225 enters the hole 207. As a result, the end faces T1, T3 of the engagement protrusion 225 and the connecting shaft 111 are butted against each other. With the prismatic engagement protrusion 225 and the connecting shaft 111 engaged with the inner peripheral surface of the connection ring 204, the three can rotate together within the connection holder 203. In other words, the operator can rotate the knob 222 as desired until the engagement protrusion 225 enters the hole 207. Connecting shaft 111 is connected to body adapter 40 via drive shaft 112, and when the operator continues to rotate knob 222, drive shaft 112 rotates, making it possible to rotate body adapter 40. The rotational motion of body adapter 40 is converted into linear motion by deadbolt power conversion unit 42. The operator can rotate knob 222 in any direction to move deadbolt 32 in the unlocking or locking direction, thereby eliminating any operational abnormality of deadbolt 32 (stopped midway through movement).

[0095] The emergency mode is a normal mode, that is, a state in which each part of the electric lock 100 starts to operate by driving the motor (main motor) 104, and then stops midway. In this embodiment, the knob 222 is operated to rotate the connecting shaft 111, and the deadbolt 32 is set to the locked or unlocked state, whereby the operation unit 111A switches the detection unit 105 to ON1, or the operation unit 111B switches the detection unit 105 to ON2. This can be used as a trigger to return parts such as the gear 108C and the gear clutch 109 to their original positions.

[0096] Although the above description is given taking as an example a case where the electric lock 100 is switched to the emergency mode when it is unlocked, the same applies when the electric lock 100 is switched to the emergency mode when it is locked.

[0097] When the detection unit 105 detects that the deadbolt 32 has been moved to an appropriate position (advanced or retreated position) by manual operation by the operator, the electric lock 100 is switched from the emergency mode to the normal mode. Specifically, the control unit 103 outputs a command to drive the emergency motor 201 in reverse. When the emergency motor 201 rotates in reverse, the worm gear 211 operates in reverse rotation, and the holding portion 217 of the connection cam 214 moves from the bottom 215D to the top 215U of the cam engagement surface 215. As a result, the switching means 210 is again switched to a state in which power from the emergency power transmission means 202 is cut off.

[0098] In this example, the electric lock 100 (detection unit 105 and / or control unit 103) detects (determines) that the deadbolt 32 is malfunctioning if a resistance equal to or greater than a predetermined value occurs during operation of the deadbolt 32, and stops the motor 104 that drives the deadbolt 32 in normal mode. This resistance threshold is often set relatively small, for example, from a safety standpoint, which means that even if an error occurs indicating that the deadbolt 32 is malfunctioning, it is often possible to move the deadbolt 32 manually.

[0099] The electric lock 100 of this embodiment is a keyless electric lock that does not require a physical key for the convenience of lock management by an administrator, etc., and if the deadbolt 32 stops midway, it cannot be unlocked or locked normally. In this case, if a physical key is required in an emergency, it cannot be said that the convenience of lock management for the administrator is sufficiently high. The electric lock 100 of this embodiment can eliminate the operational abnormality of the deadbolt 32 by the emergency locking / unlocking means 200 without using a physical key even in the emergency mode.

[0100] Furthermore, in the normal mode, the knob 222 is configured to rotate freely, thereby improving safety.

[0101] Furthermore, although the power supply for the emergency motor 201 is shared with the power supply for the motor 104 in the normal mode, the emergency motor 201 is driven only in the emergency mode, so that power consumption can be kept to a minimum.

[0102] In the above, this embodiment has been described using the electric lock 100 and locking / unlocking device 150 used in the handle lock 10 as an example, but the same can be implemented with a lock that is not integrated with the handle, or with an electric lock and locking / unlocking device other than a handle lock, and the same effects can be obtained. [Explanation of symbols]

[0103] 10 Handle lock 32 Deadbolt 40 Body adapter (power input means) 100 Electric Lock 101 Power supply section 102 Information input section 103 Control section 104 Motor 105 Detection unit (deadbolt status sensor) 111 Connection shaft 112 Drive shaft 150 Locking / unlocking device 200 Emergency locking and unlocking means 201 Emergency motor 202 Emergency power transmission means 203 Connection holder 204 Connection Ring 205 coil spring 210 Switching means 214 Connecting Cam 220 Manual operation section 222 Knob 225 Engagement protrusion

Claims

1. An electric lock that can operate a deadbolt to lock and unlock a door from one side of the door, An information input unit; emergency locking / unlocking means for resolving an abnormality in the operation of the deadbolt; The emergency locking / unlocking means is A manual operation unit provided on the one side; A power transmission means capable of transmitting the power of the manual operation unit to the deadbolt; a switching means for switching between a power transmission state and a power cut-off state of the power transmission means; A motor that serves as a drive source for the switching means. The electric lock is characterized by the above.

2. A control unit is provided, The control unit sets the switching means to a blocking state when the operation of the deadbolt is normal, and switches the switching means to the transmitting state when the abnormality occurs in the operation.

2. The electronic lock according to claim 1.

3. Another motor is provided as a drive source for the deadbolt.

2. The electronic lock according to claim 1.

4. A control unit is provided, The control unit compares the input information received through the information input unit with authentication information for operating the deadbolt, and when the input information matches the authentication information, moves the deadbolt in an unlocking direction by the other motor.

4. The electronic lock according to claim 3.

5. A detection unit that detects the state of the deadbolt, When the detection unit detects the abnormality of the deadbolt, the emergency locking / unlocking means switches to a mode in which the abnormality is eliminated.

2. The electronic lock according to claim 1.

6. the switching means has a worm gear and a cam that engages with the worm gear and the power transmission means, The motor rotates the worm gear.

2. The electronic lock according to claim 1.

7. An electric lock according to any one of claims 1 to 6; A lock case that is housed in the door and has the deadbolt.

8. A handle lock comprising the locking / unlocking device according to claim 7.

Images