JP2010101124A - Lock device for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve use convenience in a lock device for a door by increasing the speed of unlocking operation. <P>SOLUTION: The lock device includes an electric lock part 4 including a dead bolt 3, the bolt being driven between locking and unlocking positions with a dead bolt driving actuator 1 and regulating the opening operation of a door 2 in the locking position; a read-ahead part 6 which outputs an answer request signal to a portable device 5 carried by a user, the portable device outputting authentication ID signal in response to the answer request signal, at predetermined time intervals, and stores an authentication result for the received ID signal; an electric lock control part 7 which unlock-drives the electric lock part 4 on condition that authentication establishment information is stored in the look-ahead part 6, maintains the unlock state until the information stored in the read-ahead part is changed to authentication non-establishment, and then performs shifting to the lock state; and a latch part 10 which includes a latch 9, the latch being engagingly locked to a door frame 8 by projecting from the door 2, and releasing the locking state with the door frame 8 in a recessed state to the door 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a door locking device.

As a door locking device driven and unlocked by an actuator, the one described in Patent Document 1 is known. In this conventional example, the door locking device has an electric lock having a dead bolt that advances and retreats to the door frame, and a latch bolt that is driven by a solenoid or the like, and both the dead bolt and the latch bolt protrude. The unlocking is performed by unlocking the electric lock by the user and detecting the human body by a human body detection sensor such as a touch sensor.
JP-A-11-293975

  However, in the above-described conventional example, the unlocking operation requires user authentication, dead bolt pull-in drive after authentication is established, and latch bolt release drive, and the user completes these operations completely. You have to wait in front of the door until you do it, and it has the disadvantage of being unusable.

  The present invention has been made to eliminate the above-described drawbacks, and an object of the present invention is to provide a door locking device that is improved in usability by increasing the speed of the unlocking operation.

  In addition to the electric lock unit 4, the door locking device includes a pre-reading unit 6, an electric lock control unit 7, and a latch unit 10, and is distributed in the same case or around the door 2.

  The electric lock unit 4 includes a dead bolt 3 that is driven between the locking and unlocking positions by the dead bolt driving actuator 1. When the dead bolt 3 is in the locking position, the electric locking unit 4 protrudes from the door 2 and is locked to the door frame 8. The opening operation of the door 2 is restricted.

  The prefetch unit 6 outputs a response request signal to the portable device 5 possessed by the user at predetermined time intervals, and receives a response from the portable device 5 in response to the response request signal. The response includes a portable device-specific authentication ID signal given to each portable device, and stores whether or not the authentication ID signal is registered in advance as an ID that can be authenticated. The authentication propriety information in the prefetch unit 6 is rewritten corresponding to the response to the response request signal. Further, even if the response request signal transmission interval is fixed, or when the portable device 5 that can be authenticated is detected by the cyclic operation, the cyclic interval is shortened until the portable device 5 is not detected. As such, it may be variable.

  The electric lock control unit 7 drives the dead bolt driving actuator 1 when the prefetch unit 6 holds the authentication establishment signal, that is, when the authenticable portable device 5 enters the communicable range of the prefetch unit 6. Then, the electric lock unit 4 is changed to the unlocked state. The unlocked state is maintained until the authentication establishment signal in the prefetching unit 6 disappears, and then the dead bolt driving actuator 1 is driven again to return the electric lock unit 4 to the locked state.

  In the present invention in which the electric lock unit 4 is unlocked when the authenticable portable device 5 enters the communicable range, the unlocking operation is performed in front of the door 2 to authenticate the portable device 5 and the dead bolt 3 Compared with the case of waiting for the unlocking operation to be completed, the door 2 can be opened quickly, so the convenience is improved.

  In addition, in order to prevent a malfunction caused by the misplaced portable device 5, when the portable device 5 is used on the condition that the response signal is output by motion detection by a motion detection unit or the like, the door 2 is often kept stationary. In the previous authentication operation, the portable device 5 may not output a response signal. On the other hand, since the movement from the start of communication of the portable device 5 to the door 2 is necessarily accompanied by the movement of the portable device 5, in the present invention in which the authentication operation is terminated during this period, the occurrence of the above-described problem is ensured. Can be prevented.

  Further, the electric lock unit 4 automatically returns to the locked state when the authentication establishment signal in the pre-reading unit 6 disappears. For example, the electric lock unit 4 once enters the communicable area and then enters the communicable area again without entering the room. Even when the user exits from the terminal, there is no problem that the electric lock unit 4 is left in the unlocked state. The disappearance of the authentication establishment signal occurs when the authenticable portable device 5 does not exist within the communication range during the rewriting operation of the authentication permission / prohibition signal in the prefetch unit 6, and as described above, in addition to evacuation before entering the room, It is brought about by satisfying various set conditions such as communication interruption or motion stoppage by placing the portable device 5 after entering the room.

  In addition, the latch portion 10 locks the latch 9 to the door frame 8, thereby preventing the door 2 from being unintentionally opened due to wind pressure or the like due to the unlocking of the dead bolt 3 in the electric lock portion 4.

Furthermore, the door lock device can include an operator detection unit 11 that is installed in the door 2 or in the vicinity of the door 2 and detects an operator within a detection distance shorter than the communication distance with the portable device 5. . In this case, the latch unit 10 is
A latch stopper 12 for restricting the immersing operation of the latch 9 at the locked position and allowing the immersing of the latch 9 at the unlocked position;
The electric lock unit 4 is in an unlocked state, and includes a latch driving actuator 13 that drives the latch stopper 12 to the unlocked position on condition that the operator is detected by the operator detecting unit 11.

  With the configuration as described above, the operation of the latch stopper 12 can be related to the operation of the electric lock portion 4. As a result, when the electric lock portion 4 is in the locked state, the immersion of the latch 9 is also restricted. It becomes the state of heavy locking, and the crime prevention performance improves. Further, by determining the release timing of the latch stopper 12 by the operator detection in the operator detection unit 11 that detects the operator within a detection distance shorter than the communication distance with the portable device 5, Since the latch 9 can be immersed in accordance with the movement of the door 2 to the nearest position, the user can immediately open the door without waiting for any operation to be completed. .

  In addition to the latch 9 only allowing forward and backward movement from the door 2, the contact surface with the door frame 8 is inclined with respect to the locking posture perpendicular to the opening locus, and the opening locus, It is possible to use both the reversing latches 9 that are rotatable between the immersable posture in which the component force in the immersive direction is generated by the opening operation. In the latch 9 that is unlocked from the door frame 8 only by translational movement, the immersion operation of the latch 9 requires an operation to the handle or the movable operation member installed on the surface of the door 2. 9, the latch stopper 12 is released by the latch drive actuator 13, so that the door can be opened simply by pushing the door 2. As a result, since it is not necessary to arrange a movable operation member on the door 2, the structure is simplified.

  For the operator detection unit 11, for example, a human sensor formed by an infrared proximity sensor or the like can be used. However, when the reverse latch 9 is used for the latch unit 10, the contact sensor 11 incorporated in the door operation handle 14 is used. It is desirable to use it. That is, when the reverse latch is used, the door 2 can be opened by wind pressure or the like by releasing the latch stopper, but if the contact sensor 11 incorporated in the door operation handle 14 is used, the door operation handle 14 is touched. The release of the latch stopper 12 in the state is guaranteed. The contact sensor 11 can be a capacitance sensor in addition to a normal push button switch.

  According to the present invention, the unlocking operation to the electric lock part is started when an authenticable portable device enters the communication area, and when the user stands in front of the door, the dead bolt has already been unlocked. Therefore, the speed of the unlocking operation is increased, and usability can be improved.

  As shown in FIG. 1, the door locking device includes an electric lock unit 4, a latch unit 10, an electric lock unit 4, and a lock control unit 15 that controls the operation of the latch unit 10. Although FIG. 1 shows a case where the electric lock unit 4, the latch unit 10, and the lock control unit 15 are fixed to the door 2, the lock control unit 15 can be arranged other than the door 2.

  Further, the door 2 is provided with a door operation handle 14 which is a handle when the door 2 is opened, a lock button 16 and an unlock button 17 when performing the unlocking operation. A capacitance sensor as the operator detection unit 11 is disposed at an appropriate place.

  The electric lock part 4 is driven by the dead bolt drive actuator 1 controlled by the lock control part 15 and driven to unlock and drive, and the dead bolt drive actuator 1 is driven forward and backward between the lock and unlock positions toward the door frame 8. A dead bolt 3 that is locked to the door frame 8 and regulates an opening operation to the door 2 at a locking position where one end projects from the door 2 is fixed in the lock case 18.

  In order to detect the unlocking position of the deadbolt 3, an unlocking state detection switch is arranged on the door 2, and when the deadbolt 3 is in the unlocking position where it is immersed in the door 2, the unlocking state detection signal is “ "ON" is output.

  On the other hand, the latch unit 10 includes a latch 9, a latch stopper 12, and a latch driving actuator 13 that are accommodated in a latch case 19. As will be described in detail later, the latch 9 is a reversing latch, and maintains and releases the locked state with the door frame 8 when the door is closed by setting and releasing the latch stopper 12 driven by the latch driving actuator 13. When the latch stopper 12 is driven and set to the locked position in the closed state, the immersion of the latch 9 into the door frame 8 is restricted, and the state is substantially the same as when the door 2 is locked. On the other hand, when an opening operation force is applied to the door 2 in the set release state in which the latch stopper 12 is moved to the unlocking position, the latch 9 rotates into a predetermined angle and then enters the door 2 so that the door frame 8 The lock is released.

  The lock control unit 15 shifts the locking / unlocking state of the electric lock unit 4 on condition that the authentication ID transmitted from the portable device 5 is authenticated. As shown in FIG. 2, the portable device 5 includes an RF transmission unit 21, an LF reception unit 22, an ID storage unit 23 storing an authentication ID unique to the portable device, and a lock button. An operation detection unit 24 and an unlock button operation detection unit 25 are provided.

  The portable device 5 is provided with a locking button 26 and an unlocking button 27 that can be operated by the user. When an operation on either one is detected by the locking / unlocking button operation detection unit 25, the CPU 20 An authentication wireless signal (authentication ID signal) including the authentication ID in the storage unit 23 and the distinction between locking and unlocking is generated, output to the RF transmission unit 21, and transmitted from the antenna 28.

  Moreover, the portable device 5 has an LF receiving unit 22 that receives a response request signal output from the door lock device. When the LF receiving unit 22 receives the response request signal, the CPU 20 The authentication ID signal is set and output from the RF transmitter 21 in the same manner as when communication is started by operating the lock / unlock button.

  The lock control unit 15 controls the electric lock unit 4 and the latch unit 10 in an active mode, a passive mode, and a look-ahead mode. The active mode is a locking / unlocking operation mode in which the user operates the locking / unlocking button 27 disposed on the portable device 5, and is operated when authentication for the authentication ID signal output from the portable device 5 is established. Locking / unlocking operation is performed according to the button type.

  The passive mode is a locking / unlocking operation mode by operating the locking / unlocking button 27 arranged on the door 2 side. When the locking / unlocking button 27 is operated, the lock control unit 15 outputs a response request signal to the portable device 5. In response to this, the locking / unlocking operation is performed on the condition that the authentication for the authentication ID signal output from the portable device 5 is established.

  In contrast, the prefetch mode is an unlocking operation mode based on response request signals output from the lock control unit 15 at predetermined time intervals, and the unlocking operation is started without requiring an explicit operation by the user. This is different from the active mode and passive mode.

  FIG. 3 shows a functional block diagram of the lock control unit 15. The lock control unit 15 includes an ID storage unit 31, an RF reception unit 31, an authentication unit 32, a lock button operation detection unit 33, and an unlock button operation detection unit 25 connected to the control unit (CPU 29). When an operation on the unlocking buttons 16 and 17 arranged on the door 2 is detected by the locking button operation detecting unit 33 or the unlocking button operation detecting unit 34, a passive operation is started. When the passive operation is started, the CPU 29 sets a response request signal in the LF transmission unit 35 and transmits it to the portable device 5 via the antenna 36. The response request signal is given a lock / unlock identification signal corresponding to the operated lock / unlock buttons 16, 17, and after outputting the response request signal, the CPU 29 monitors the output from the RF receiver 31 for a predetermined time. When a response from 5 is received and an authentication ID signal is received from the portable device 5, it is output to the authentication unit 32.

  Upon receiving the authentication ID signal, the authentication unit 32 determines whether or not the authentication ID exists in the ID storage unit 31, and if it exists, outputs an authentication establishment signal to the CPU 29. Upon receiving the authentication establishment signal, the CPU 29 sets the lock or unlock signal in the dead bolt control unit (electric lock control unit 7) based on the lock / unlock type signal, and the dead bolt connected to the dead bolt control unit 7 Drive actuator 1 is driven.

  In addition, when an authentication ID signal that can be authenticated is received by the RF reception unit 31 when the above-described passive operation and a pre-reading operation described later are not performed, the active operation starts. The CPU 29 that has received the authentication ID signal in the active mode drives the dead bolt 3 on the condition that the authentication unit 32 establishes the authentication, as in the above-described passive operation.

  Further, the lock control unit 15 has a prefetching unit 6. The prefetching unit 6 has a timing unit 37 that outputs the output timing information of the response request signal at predetermined time intervals, and the CPU 29 that has received the output timing information sets the response request signal and outputs it from the LF sending unit 35. Similar to the passive operation, it prepares for authentication of the authentication ID signal.

  When the authentication for the response request signal is established, the electric lock unit 4 is driven, and the authentication establishment signal is stored in the authentication result storage unit 38 of the prefetch unit 6. The authentication result storage unit 38 is rewritten to the latest value every time an authentication enable / disable signal is output in the prefetch mode.

  The lock control unit 15 is provided with a door open / close detection unit 40 for detecting the open / closed state of the door 2 and is connected to a door open / close detection switch 39 fixed to the door 2 side. Locking / unlocking in the opened state, in particular, locking operation on the electric lock unit 4 may cause the dead bolt 3 to be damaged due to the closing operation, and therefore the control by the lock control unit 15 is performed by the door opening / closing detection unit 40. The condition is signal detection.

  Furthermore, the lock control unit 15 includes a latch control unit 41 and a handle operation detection unit 43 connected to the contact sensor 11 (capacitance sensor) incorporated in the door operation handle 14. When the handle operation detection unit 43 detects the user's operation on the door operation handle 14, the latch control unit 41 detects the output of the unlocked state detection switch 43 from the state of the unlocked state detection unit 44. When the state is detected and the completion of the movement of the dead bolt 3 to the unlocked position is confirmed, a lock / unlock signal is output to the latch driving actuator 13 to drive the latch stopper 12.

  Prior to the unlocking operation of the latch stopper 12, the dead bolt 3 is confirmed to be moved to prevent malfunction due to the back pressure of the dead bolt 3 when the electric lock 4 is shifted from the locked state to the unlocked state. can do.

  The operation of the lock control unit 4 is shown in FIGS. The control in the lock control unit 15 includes: output of a response request signal at a predetermined time interval in the prefetch unit 6; waiting for a response from the portable device 5 in response thereto; authentication when there is a response; and driving operation of the electric lock unit 4 In the middle of the operation, if there is an explicit locking / unlocking instruction from the user during the operation, that is, if there is an active or passive operation, it is advanced to process these preferentially.

  First, when the operation starts, the CPU 29 monitors the output of the door opening / closing detection unit 40 (step S1). When the door 2 closing signal is detected in step S1, the outputs of the locking button operation detection unit 33 and the unlocking button detection unit 34 are confirmed for detection of passive operation (steps S2 and S3). If there is no output, the output of the RF receiver 31 is confirmed, and if there is an output of the RF receiver 31, whether or not the received authentication ID signal can be authenticated is determined to detect an active operation (step S4). In this embodiment, the unlocking command by the passive operation is shown to be performed by operating the unlocking button 17 of the door 2, but the latch stopper releasing operation during the pre-reading operation of the door operation handle 14 is shown. When the unlocking state detection switch 43 does not detect the unlocking state, as described later, the door operation handle 14 can also be used as the unlocking button.

  When an explicit locking / unlocking operation by the user is not detected in these steps S2, S3, S4, the portable device 5 responds to a response request signal for a prefetching operation output at a predetermined time interval by a routine not shown. By detecting the response, the entry of the user in the communication area with the lock control unit 15 is detected (step S5).

  When authentication of the portable device 5 is performed in step S5, the authentication establishment information is stored in the authentication result storage unit 38, and the dead bolt driving actuator 1 is driven to shift the electric lock unit 4 to the unlocked state. Next, the completion of the unlocking operation is detected by the unlocking switch detection unit (step S7). When the completion of the unlocking operation is confirmed in step S7, first, after confirming that there is no explicit opposite operation by the user, that is, no locking operation by active or passive operation (step S8), the capacitance The output of the sensor 11 is detected (step S9). When a locking operation is detected in step S8, an electric lock portion locking routine (step S4-12) shown in FIG. 6 is executed.

  When an operation on the door operation handle 14 is detected in step S9, the latch driving actuator 13 is driven to release the locked state of the latch stopper 12 (step S10), and a timer for limiting the release time is set. set. When the time set in step S11 elapses (step S12), the door opening / closing detection unit 40 confirms that the door 2 is open (step S13), and then the latch stopper 12 is shifted to the locked state (step S14). Return to start step.

  On the other hand, when the operation to the door operation handle 14 is not detected in step S9, it waits for the result information in the authentication result storage unit 38 to be rewritten with the authentication failure information (step S9-1). After shifting the lock part 4 to the locked state (step S9-2), the process returns to the start step.

  On the other hand, when the lock button operation of the door 2 is detected in step S2, the CPU 29 sets a response request signal in the LF sending unit 35 and outputs a response request signal to the portable device 5 (step S2-1). When there is a response from the portable device 5 in response to this response request signal and authentication in the authentication unit 32 is established (step S2-2), an electric lock portion locking routine (step S4-12) is executed, and authentication is not established. In the case where it is found, the start step (step S1) is executed.

  When the unlock button operation of the door 2 is detected in step S3, a response request signal is output to the portable device 5 (step S3-1), and a response from the portable device 5 to the response request signal is waited ( Step S3-2) When the authentication for the authentication ID from the portable device 5 is not established, the start step (Step S1) is executed. On the other hand, when the authentication of the portable device 5 is established, the processing after step S6 is executed.

  Further, when an active operation is detected in step S4, the type of locking / unlocking is determined (step S4-1), and when it is a locking request, an electric lock portion locking routine (step S4-12) is executed. If an unlock request is detected in step S4-1, the electric lock unit 4 is unlocked (step S4-2), and the movement of the dead bolt 3 to the unlock position is confirmed (step S4-2). S4-3), the time measurement is started to set the time when the latch unit 10 can be released by the operation of the door operation handle 14 (step S4-4), and the electric lock unit 4 is returned to the locked state at the same time. (Steps S4-5, 4-6).

  In the capacitance sensor detection routine of the door operation handle 14, an explicit locking / unlocking process is detected before the time is up, and a locking request by a passive operation is detected (steps S4-7, 4-7-). 1, 4-7-2, 4-7-3), after the electric lock 4 is shifted to the locked state (step S4-7-4), the process returns to the start step, and the locking operation by the active operation is detected. If this happens (steps S4-9, S4-10, S4-11), the electric lock portion locking routine (step S4-12) is executed.

  Furthermore, when there is a request for unlocking during the timing routine (steps S4-7-3, S4-10), the time until automatic locking (step S4-6) is extended by resetting the timer. .

  Further, when the door operation handle 14 is operated and detected by the capacitance sensor 11 within the above timing routine (step S4-8), steps S10 and after are executed and the latch stopper 12 is released.

  As shown in FIG. 6, the electric lock part locking routine is started by driving the electric lock part 4 to lock (step S4-12), and then a detection time of an explicit locking / unlocking operation by the user is set. Is set for the timer (step S4-13). When a passive operation (steps S4-15-1, S4-15-2, S4-17) or an active operation (steps S4-16, S4-17) is detected within the set time by the timer and the request is a locking request Resumes the time measurement and substantially extends the timer. If the request is an unlock request, the unlocking operation routine of the electric lock unit 4 starting from step S4-2 is executed.

  Details of the electric lock 4 and the latch 10 are shown in FIG. In the example shown in the figure, the lock case 18 of the electric lock part 4 and the latch case 19 of the latch part 10 are connected to each other. It is also possible to contact and fix to the door 2.

  As shown in FIGS. 7 and 8, a motor is used for the dead bolt driving actuator 1 of the electric lock portion 4, and the driving force of the motor 1 is a gear train 45 accommodated in the gear box 45 together with the motor 1, and This is transmitted to the dead bolt operation cam 48 through the rack 47. The dead bolt operation cam 48 is provided with an arm 48a, and a connecting hole 48b such as a cylinder lock is provided at the center so that a cylinder lock (not shown) or a manual lock / unlock operation by a thumb turn device can be performed. It is formed.

  Further, the dead bolt 3 of the electric lock portion 4 has a U-shaped cross-sectional shape, and the locked driven portion 3a and the unlocked pressed portion are disposed at positions that interfere with the operating region of the arm 48a of the dead bolt operating cam 48. Stopper step portions 3 c are integrally formed at positions where the moving portion 3 b faces the gear box 45.

  As shown in FIG. 8A, when the motor 1 is driven in the unlocking direction from the locking position where the dead bolt 3 protrudes from the lock case 18, the dead bolt operation cam 48 rotates clockwise. The arm 48a interferes with the unlocking driven part 3b by the rotation of the deadbolt operation cam 48, and then pushes backward to move the deadbolt 3 to the unlocking position.

  When the motor 1 is driven in the locking direction from this unlocked state, the deadbolt operation cam 48 rotates counterclockwise as shown in FIG. As the deadbolt operation cam 48 rotates, the arm 48a presses the locking driven portion 3a and moves the deadbolt 3 to the locking position.

  Further, a sickle member 49 is rotatably connected to the dead bolt 3 around the pivot 50, and the sickle member 49 is engaged with a strike opening 8a opened in the door frame 8 in a locked state, as shown in FIG. 7B. The dead bolt 3 is prevented from being removed when the door frame 8 is pulled in the direction F shown in FIG. The sickle member 49 has an operating projection 49a at one end, and strikes the sickle member 49 by contacting the interference projection 18a of the lock case 18 when the dead bolt 3 moves from the locked position to the unlocked position. Rotate to the unlocking position side with the opening 8a.

  The approach of the dead stopper 51 to the gear box 45 is detected by an unlocking state detection switch 43 comprising a permanent magnet 51a fixed to the dead stopper 51 and a Hall element fixed in the gear box 45, and the dead bolt 3 is It is detected that the tablet is unlocked.

  As shown in FIGS. 9 and 10, a latch holding cylinder 53 whose front and upper and lower side walls are opened and whose rear end is closed by a spring receiving wall 52 is fixed to the latch case 19 of the latch portion 10. Is accommodated in the latch holding cylinder 53 so as to be movable back and forth. The latch 9 includes a triangular prism-shaped block portion 9a having a locking surface parallel to the moving direction of the latch 9 at a front end portion and a stopper surface intersecting the locking surface at an acute angle, and whose upper and lower sides are horizontal surfaces. The block portion 9 a is inserted into the latch holding cylinder 53 with the posture exposed from the front opening 53 c of the latch holding cylinder 53.

  Further, the latch 9 is provided with stopper arms 9b, 9b projecting rearward from the upper and lower side wall openings 53a, 53b of the latch holding cylinder 53, and is slid between the pair of stopper arms 9b, 9b. 54 is disposed in the latch holding cylinder 53 so as to be movable back and forth. A compression spring 55 is mounted between the slider 54 and the spring receiving wall 52, and the latch 9 is urged forward by the slider 54. As shown in FIG. 10B, the compression spring 55 is arranged to be deviated closer to the stopper surface.

  Furthermore, cam projections 9d projecting into the upper and lower side wall openings 53a and 53b of the latch holding cylinder 53 are provided on the upper and lower surfaces of the block portion 9a, and the upper and lower side wall openings 53a and 53b are opposed to the cam projection 9d. A cam receiving surface 53d is formed on the front end surface.

  As shown in FIG. 11 (a), the latch 9 is engaged with the strike opening 8a on the door frame 8 side in a locking posture with the locking surface facing the door 2 opening direction (the direction of arrow O in FIG. 11 (a)). Stopped. As shown in FIG. 7A, in the state where the latch 9 and the dead bolt 3 are engaged with the strike openings 8a and 8b, the gap (δ0) in the door opening direction between the latch 9 and the corresponding strike opening 8b is When the door opening operation is performed, the latch 9 is brought into contact with the strike opening 8b prior to the dead bolt 3. When the door opening operation is performed, the latch 9 contacts the strike opening 8b.

  In the unlocked state, when an operation force in the opening direction is applied to the door 2 from the locked state to the strike opening 8b shown in FIG. 11 (a), the locking surface of the latch 9 is opposite to the arrow O from the strike opening 8b. Receive direction force. As a result, as shown in FIG. 11B, the latch 9 rotates clockwise until the stopper surface comes into contact with the inner wall surface of the latch holding cylinder 53 and shifts to the retractable posture. If the door opening operation is further continued from this state, the engaging surface inclined with respect to the door opening direction line receives the component force in the latch 9 immersion direction from the periphery of the strike opening 8a, and the latch 9 is opposite to the compression spring 55. It is immersed in the door 2 against the force and detached from the strike opening 8b (see FIG. 11C).

  Thereafter, when the door 2 is completely separated from the door frame 8, the latch 9 is pushed forward by the restoring force of the compression spring 55, and the cam projection 9d comes into contact with the cam receiving surface 53d. In the posture shown in FIG. 11C, the contact portion between the latch 9 and the slider 54 is offset in the door opening direction with respect to the contact portion between the cam receiving surface 53d and the cam projection 9d. , A rotational force acts counterclockwise, and the latch 9 automatically returns to the locked posture.

  When the latch 9 is in the locked position in the open state, the stopper surface faces the door frame 8. Therefore, when the closing door 2 is operated from this state, the latch 9 is temporarily suspended by the immersion force from the stopper surface. After being immersed, it is locked to the strike opening 8b.

  As shown in FIG. 10, the latch stopper 12 for maintaining the latch 9 in the locked posture in the closed door 2 state and maintaining the latched state of the latch 9 restrains the movement of the stopper arm 9b of the latch 9 and latches. 9 is restricted. As shown in FIG. 9, the latch stopper 12 is formed at one end of a stopper lever 56 connected to the latch case 19. The stopper lever 56 is rotatable around the pivot 57 and is biased by the torsion spring 58 in the stopper setting direction in which the latch stopper 12 restrains the latch 9.

  A solenoid is used for the latch driving actuator 13. In the solenoid 13, the non-excitation state shown in FIG. 9A corresponds to the latch stopper set state, and the excitation state shown in FIG. 9B corresponds to the stopper release state. The driving force of the solenoid 13 is transmitted to the stopper lever 56 via the solenoid lever 59 connected to the driving shaft 13 a of the solenoid 13 and the relay lever 60.

  The solenoid lever 59 is rotatable around the pivot 61 and the relay lever 60 is rotatable around the pivot 62. Power transmission from the solenoid lever 59 to the relay lever 60 is transmitted by a projection 59 a formed on the solenoid lever 59. This is done by pressing 60 first pins 60a. Further, the relay lever 60 and the stopper lever 56 are coupled by allowing the second pin 60 b erected on the relay lever 60 to be movably inserted into the elongated hole 56 a of the stopper lever 56.

  When the solenoid 13 is excited from the latch stopper 12 set state shown in FIG. 9A, the solenoid lever 59 rotates counterclockwise as shown in FIG. 9B, and the projection 59a presses the first pin 60a. To do. As a result, the relay lever 60 rotates clockwise, the stopper lever 56 rotates counterclockwise, and the latching of the latch stopper 12 and the stopper arm 9b of the latch 9 is released.

  When the excitation of the solenoid 13 is stopped from the latch stopper 12 released state, the drive shaft 13a returns to the protruding position shown in FIG. 9A and the solenoid lever 59 returns to the original position. By the return of the solenoid lever 59, the pressing force to the first pin 60a is released, the counterclockwise rotation restraint with respect to the relay lever 60 is released, and it is urged to the latch stopper set position side by the restoring force of the torsion spring 58. The stopper lever 56 moves to the latch stopper set position.

It is a functional block diagram which shows this invention. It is a functional block diagram of a portable machine. It is a functional block diagram of a lock | rock control part. It is a flow which shows operation | movement of a lock | rock control part. It is a flow which shows operation | movement of a lock | rock control part. It is a flow which shows operation | movement of a lock | rock control part. It is a figure which shows the locking device for doors, (a) is a 7A direction arrow directional view of (b), (b) is sectional drawing. It is a figure which shows an electric lock part, (a) is a figure which shows a locked state, (b) is a figure which shows an unlocked state. It is a figure which shows a latch part, (a) is a figure which shows a latch stopper set state, (b) is a figure which shows the unlocking state of a latch stopper set. It is a figure which shows a latch, (a) is a 10 A direction arrow directional view of Fig.9 (a), and 10B-10B sectional view taken on the line of (b). It is a figure which shows the operation | movement of a latch, (a) is a figure which shows the latching state to a door frame, (b) is a figure which shows a reverse state, (c) is a figure which shows the immersion state to a door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dead bolt drive actuator 2 Door 3 Dead bolt 4 Electric lock part 5 Portable device 6 Pre-reading part 7 Electric lock control part 8 Door frame 9 Latch 10 Latch part 11 Operator detection part (contact sensor)
12 Latch stopper 13 Latch drive actuator 14 Door operation handle

Claims (5)

An electric lock portion that is driven between the unlocking and unlocking positions by the deadbolt driving actuator and includes a deadbolt that regulates the door opening operation at the locking position;
A pre-reading unit that outputs a response request signal at a predetermined time interval to a portable device possessed by the user and outputs an authentication ID signal in response to the response request signal, and stores an authentication result for the received ID signal;
An electric lock that unlocks the electric lock unit on condition that the authentication establishment information is stored in the pre-reading unit, maintains the unlocked state until the storage information of the pre-reading unit changes to non-authentication, and then shifts to the locking state. A control unit;
A door locking device comprising: a latch portion that includes a latch that protrudes from a door and engages with the door frame and releases the engagement with the door frame when immersed in the door. While having an operator detection unit that is installed near the door or near the door and detects the operator within a detection distance shorter than the communication distance with the portable device,
The latch portion restricts the immersing operation of the latch at the lock position, and allows the immersion of the latch at the unlock position;
The door locking device according to claim 1, further comprising: a latch driving actuator that drives the latch stopper to an unlocked position on condition that the electric lock portion is unlocked and the operator is detected by the operator detecting portion.   3. The door locking device according to claim 2, wherein the latch driving actuator is driven again after a predetermined time has elapsed from completion of the unlocking operation of the latch stopper to return the latch stopper to the locked position.   The door locking device according to claim 2 or 3, wherein the operator detection unit is a contact sensor incorporated in a door operation handle.   The latch portion has a locking posture in which a contact surface with the door frame is perpendicular to the opening locus, and an immersable posture in which a component force in the immersing direction is generated by skewing with respect to the opening locus. The door locking device according to claim 1, 2, 3, or 4, wherein the door locking device is formed as a reversing latch device that can freely rotate between the two and is controlled by a latch stopper from a locking posture to a retractable posture.

Images