JP5519139B2 - Door lock device - Google Patents

Description

  The present invention relates to a door locking device.

As a door locking device that uses a latch device for locking to a door frame to maintain a closed state as a locking body, the one described in Patent Document 1 is known. In this conventional example, the door locking device includes an inversion latch, a lock unit that restricts the inversion operation of the inversion latch in the locked state and locks the door, and an electric drive unit that shifts the lock unit to the unlocked state. The locking / unlocking operation is performed by driving the electric drive unit based on a locking / unlocking instruction by a user having a predetermined authority.
JP 2008-179997 A

  However, when the reversing latch is driven by an actuator using a locking body, there are the following problems. That is, since the reverse latch is in a state where the door can be opened only by opening the door by releasing the lock portion, it is not possible to completely prevent the door from being unnecessarily opened due to wind pressure or the like.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a door locking device that can reliably prevent an inadvertent opening of a door during an unlocking operation.

The door locking device includes a latch portion 6, a contact sensor 8 disposed on the door operation handle 7, and a lock control portion 9. The latch portion 6 protrudes from the door 1 and can be locked to the door frame 2. However, when an opening operation force is applied by pushing or pulling the door, the latch portion 6 is immersed in the door 1 to release the locked state. And a latch stopper 5 for restricting the immersion of the latch 3 into the door 1 at the lock position. The driving of the latch stopper 5 is a solenoid controlled by a lock control unit 9 or an actuator such as a motor. 4 is performed. When the latch stopper 5 is in the set state in the locked position, the latch 3 that protrudes from the door 1 and is locked to the door frame 2 is restricted from entering the door 1, so that the closed state is maintained. At the same time, in this state, the door opening operation accompanied by the immersion operation of the latch 3 is also restricted, so that the latch portion 6 can be used as a locking element.

  The lock control unit 9 uses the authentication unit 16 to authenticate that the authentication unit 16 is a genuine operator for the door locking device as a driving condition of the latch stopper 5. As the authentication information in the authentication unit 16, in addition to biometric information such as a personal identification number and fingerprint, an authentication ID signal of the portable device 11 possessed by the user can be used. As will be described later, when the authentication unit 16 is configured as an authentication unit for the portable device 11, the authentication operation can be completed before reaching the door 1, thereby eliminating the waiting time until the door opening operation and improving usability. .

  The lock control unit 9 includes an unlocking condition determination unit 10 and adds a condition for unlocking operation, that is, for releasing the set of the latch stopper 5. The unlocking condition determination unit 10 releases the latch 3 in a state where the door 1 is not touched by adding contact detection to the door operation handle 7 in addition to authentication by the authentication unit 16 as a release condition of the latch stopper 5. Thus, it is possible to prevent the door 1 from being inadvertently opened by wind or the like.

  Furthermore, as described above, the portable device 11 can be used as the authority authentication means, and the lock control unit 9 can be provided with the traveling operation unit 17 that outputs response request signals to the portable device 11 at predetermined time intervals. The traveling operation unit 17 outputs a response request signal to the portable device 11 at predetermined time intervals, and receives a response from the portable device 11 in response to the response request signal. The response includes an authentication ID signal unique to the portable device 11 given to each portable device 11, and when the authentication for the authentication ID signal is established, the output from the contact sensor 8 is monitored for a predetermined time, When there is an output, the latch stopper 5 is set and unlocked.

  Thus, when the authentication operation of the portable device 11 is performed at the timing when the portable device 11 that can be authenticated enters the communicable range, the door is earlier than when waiting for the completion of the authentication for the portable device 11 in front of the door 1. Since the opening operation of 1 can be performed, convenience is improved.

  In addition, in order to prevent malfunctions caused by the misplaced portable device 11, when the portable device 11 is used in which the output of the response signal is subject to motion detection by a motion detection unit or the like, the door 1 is often kept stationary. In the previous authentication operation, the portable device 11 may not output a response signal. On the other hand, since the movement from the start of the portable device communication to the door 1 is necessarily accompanied by the movement of the portable device 11, in this configuration in which the authentication operation is terminated during this period, the occurrence of the above-described problem is ensured. Can be prevented.

  Further, the release of the latch stopper 5 in the latch portion 6, that is, the transition to the door opening enabled state is based on the condition that the operator is detected within a predetermined time from the establishment of the authentication for the portable device 11 during the patrol operation. Even if the user enters the communicable area and then exits the communicable area again without entering the room, the latch stopper 5 is released and no one can open the door. Authentication failure in the patrol operation occurs when the authenticable portable device 11 does not exist within the communication range during the rewriting operation of the authentication permission signal in the patrol operation unit 17, and as described above, in addition to the evacuation before entering the room, This is achieved by satisfying various set conditions such as blocking communication due to or stopping motion by placing the portable device 11 after entering the room.

Even if the interval of the cyclic operation is fixed or when the portable device 11 that can be authenticated is detected by the cyclic operation, the cyclic interval is variable so that the cyclic interval is shortened until the portable device 11 is not detected. It may be.
According to the present invention,
Locked to the door frame 2 in a projecting posture from the door 1 and driven by a latch 3 and an actuator 4 that enter the door 1 and release the locked state with the door frame 2 when the door is opened. A latch portion 6 provided with a latch stopper 5 that regulates the immersion operation of the latch 3 and maintains the door closed and locks it,
A contact sensor 8 disposed on the door operation handle 7 for detecting an operation of the door operation handle 7 by an operator;
A lock control unit 9 for driving the latch stopper 5 on condition that authentication of the latch stopper release authority of the operator in the latch unit 6 is established.
The lock control unit 9 includes a door lock provided with an unlocking condition determination unit 10 that uses the detection of the operator by the contact sensor 8 within a predetermined time from the establishment of the authentication as a condition for releasing the latch stopper 5 in addition to the establishment of the authentication. It is also possible to provide a device.

  According to the present invention, authentication to the portable device is started when the portable device enters the communication area, and when the user stands in front of the door, the authentication operation has already been completed. The speed of operation becomes faster, and usability can be improved.

  As shown in FIG. 1, the door locking device includes a latch portion 6 and a lock control portion 9 that controls the operation of the latch portion 6. Although FIG. 1 shows a case where the latch unit 6 and the lock control unit 9 are fixed to the door 1, the lock control unit 9 can be arranged other than the door 1.

  Further, the door 1 is provided with a door operation handle 7 which is a handle when the door 1 is opened, a lock button 18 and a lock button 19 when performing the unlocking operation. A contact sensor 8 composed of a capacitance sensor is disposed at an appropriate location.

  The latch unit 6 includes a latch 3, a latch stopper 5, and an actuator 4 that are accommodated in the latch case 20. As will be described in detail later, the latch 3 is a reverse latch, and can be controlled by setting and releasing the latch stopper 5 driven by the actuator 4 to maintain and release the locked state with the door frame 2 when the door is closed. When the latch stopper 5 is driven and set to the locked position in the closed state, the immersion of the latch 3 into the door frame 2 is restricted, and the state is substantially the same as when the door 1 is locked. On the other hand, when the opening operation force is applied to the door 1 in the set release state in which the latch stopper 5 is moved to the unlocking position, the latch 3 rotates into a predetermined angle and then enters the door 1 to The lock is released.

  The lock control unit 9 changes the locking / unlocking state of the latch unit 6 on condition that the authentication ID transmitted from the portable device 11 is authenticated. As shown in FIG. 2, the portable device 11 includes an RF transmission unit 22, an LF reception unit 23, an ID storage unit 24 storing an authentication ID unique to the portable device, and a lock button. An operation detection unit 25 and an unlock button operation detection unit 26 are provided.

  The portable device 11 is provided with a locking button 27 and an unlocking button 28 that can be operated by the user. When an operation on either one is detected by the locking / unlocking button operation detection unit 26, the CPU 21 An authentication wireless signal (authentication ID signal) including the authentication ID in the storage unit 24 and the distinction between locking and unlocking is generated, output to the RF transmission unit 22, and transmitted from the antenna 29.

  Moreover, the portable device 11 has an LF reception unit 23 that receives a response request signal output from the door lock device. When the LF reception unit 23 receives the response request signal, the CPU 21 is connected to the portable device 11 side. The authentication ID signal is set and output from the RF transmitter 22 in the same manner as when communication is started by operating the lock / unlock button.

  The lock control unit 9 controls the electric lock unit and the latch unit 6 according to the active mode, the passive mode, and the cyclic mode executed in the cyclic operation unit 17. The active mode is a locking / unlocking operation mode in which the user operates the locking / unlocking buttons 27 and 28 disposed on the portable device 11, and when the authentication with respect to the authentication ID signal output from the portable device 11 is established, The locking / unlocking operation is performed according to the button type. In each mode, when the designated operation is an unlocking operation, the unlocking operation is performed only when the unlocking condition determining unit 10 determines that unlocking is possible.

  The passive mode is a locking / unlocking operation mode by operating the locking / unlocking buttons 18, 19 arranged on the door 1 side. When the locking / unlocking buttons 18, 19 are operated, the lock control unit 9 requests the portable device 11 to respond. A signal is output, and the locking / unlocking operation is performed on the condition that the authentication for the authentication ID signal output from the portable device 11 responding thereto is established.

  On the other hand, the cyclic mode is different from the active mode and the passive mode in that the unlocking operation is started without requiring an explicit operation by the user. The operation, that is, the operation in the active or passive mode is given priority.

  FIG. 3 shows a functional block diagram of the lock control unit 9. The lock control unit 9 includes an ID storage unit 31, an RF reception unit 32, an authentication unit 16, a lock button operation detection unit 33, an unlock button operation detection unit 34, and a sensor detection unit 35 connected to the control unit 30 (CPU). Have When an operation on the locking / unlocking buttons 18 and 19 arranged on the door 1 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 30 sets a response request signal in the LF transmitter 36 and transmits it to the portable device 11 via the antenna 37. The response request signal is given a lock / unlock identification signal corresponding to the operated lock / unlock buttons 18, 19, and after outputting the response request signal, the CPU 30 monitors the output from the RF receiver 32 for a predetermined time, and 11 waits for a response from the mobile phone 11 and receives the authentication ID signal from the portable device 11 and outputs it to the authentication unit 16.

  Upon receiving the authentication ID signal, the authentication unit 16 determines whether or not the authentication ID exists in the ID storage unit 31 and outputs an authentication establishment signal to the CPU 30 if it exists. The CPU 30 that has received the authentication establishment signal determines the locking / unlocking type from the locking / unlocking type signal, and if it is a locking command, sets the locking signal in the latch driving unit 38 and shifts the latch stopper 5 to the set state. . On the other hand, when the unlocking type is unlocking request, the unlocking condition determination unit 10 starts a timer and monitors the output of the sensor detection unit 35, and detects the sensor within the time set by the timer. Only when the part 35 detects the operation of the door operation handle 7, the unlock signal is set to the latch drive part 38, and the latch stopper 5 is shifted to the set release state, and the unlock state is set.

  The lock control unit 9 starts the active operation when the RF receiving unit 32 receives a communicable signal other than the response to the response request signal from the portable device 11 and receives the authentication ID signal. The latch stopper 5 is operated in the same procedure as the operation.

  Further, the cyclic mode is started by outputting a response request signal at a predetermined time interval. When the CPU 30 receives the signal output timing signal output from the cyclic operation unit 17, a response request signal is set and output from the LF transmission unit 36 to prepare for authentication of the authentication ID signal as in the passive operation.

  4 and 5 show the operation of the lock control unit 9. First, when the operation starts, the CPU 30 monitors the output of the door opening / closing detection unit 39 (step S1). When the door closing signal is detected in step S1, it is detected whether or not there is an operation by the user (step S2), and if there is no such request, it is detected whether or not there is a response portable device 11 for the traveling mode. (Step S3).

  When the portable device 11 responding to the patrol operation is detected in step S3 and authentication is established by the authentication unit 16 for the authentication ID signal output from the portable device 11, the unlocking condition in the unlocking condition determining unit 10 is determined. A determination is made. In determining the unlocking condition, first, in order to limit the operation time to the door operation handle 7, a timer is started (step S4), and the output of the sensor detection unit 35 is monitored for a predetermined time (step S5, 6).

  In the timing routine, an explicit unlocking / unlocking request by the user is detected (steps S7, 8, 9), and the request operation is performed. If there is a request for unlocking within the timekeeping routine (step S9), the process returns to step S4 to newly start the timer and substantially extend the timekeeping time.

  If an operation to the door operation handle 7 is detected before the time is up in the time measuring routine, the latch stopper 5 is released (step S10), and then a timer is set to limit the release time of the latch stopper 5 (step S11). ). The return to the locked state by releasing the latch stopper 5 is not only time-up (step S12), but also detection of the door open state in the door open / close detection unit 39 connected to the door open / close detection switch 61, that is, the door 1 by the user. (Step S14) or by a lock request (steps S13, S16, S17), and the continuation of an unnecessary unlocked state for a long time is prevented.

  On the other hand, when there is an explicit operation request by the user in step S2, the type is detected. First, in this embodiment, the contact sensor 8 (capacitance sensor) of the door operation handle 7 has a function as the unlocking button 27 in addition to the unlocking determination element in the unlocking condition determining unit 10. When an operation to the door operation handle 7 is detected in step S2-1, a response request signal to the portable device 11 is output (step S2-1-1), and authentication is established (step S2-1). -2) A latch stopper release process starting from step S10 is performed.

  In the case of the unlocking request using the door operation handle 7, since the operation to the door operation handle 7 has already been performed, the latch stopper 5 is released immediately after the completion of the authentication.

  On the other hand, when the operation of the unlock button 27 is detected and authentication is established (steps S2-2-1, S2-2-2), the latch stopper 5 releasing process with the operation time limit starting from the timer set in step S4 is performed. When the operation of the lock button 27 is detected and the authentication is established (steps S2-3-1 and S2-3-2), the lock process after step S2-7 is executed.

  In addition, when the portable device 11 by the active operation is authenticated, the locking / unlocking type is detected (step S2-4), and in the case of the unlocking request (step 2-5), the latch stopper release processing with the operation time limit (step S4 and subsequent steps) ) Is executed, and if it is a locking instruction (step S2-6), a locking process is executed.

  In the locking process, first, after setting the latch stopper 5 (step S2-7), the door 1 is opened (step S2-11), or when a predetermined period has passed (steps S2-8, S2-9) End and return to initial control. When the unlocking operation is performed during the locking process (step S2-10), a new unlocking operation is performed.

  Details of the latch unit 6 are shown in FIG. The latch portion 6 is inserted and fixed inside the door 1, and a cylinder lock 13 for manually operating the latch portion 6 and a thumb turn device 40 are fixed to the front and back of the door 1. Each of the cylinder lock 13 and the thumb turn device 40 is provided with an operation shaft 41 that rotates in accordance with the rotation operation.

  As shown in FIGS. 6 and 8, a latch holding cylinder 43 whose front and upper and lower side walls are opened and whose rear end is closed by a spring receiving wall 42 is fixed to the latch case 20 of the latch portion 6. Is accommodated in the latch holding cylinder 43 so as to be movable back and forth. The latch 3 includes a triangular prism-shaped block portion 3a having a locking surface parallel to the moving direction of the latch 3 at a front end portion and a stopper surface that intersects the locking surface at an acute angle and whose top and bottom are horizontal surfaces. The block portion 3 a is inserted into the latch holding cylinder 43 with the posture exposed from the front opening 43 c of the latch holding cylinder 43.

  The latch 3 is provided with a stopper arm 3b projecting rearwardly in the upper and lower side wall openings 43a and 43b of the latch holding cylinder 43, and a slider 44 is sandwiched between the pair of stopper arms 3b and 3b. It is arranged in the latch holding cylinder 43 so as to be movable back and forth. A compression spring is mounted between the slider 44 and the spring receiving wall 42, and the latch 3 is urged forward by the slider 44. As shown in FIG. 8B, the compression spring 45 is arranged to be deviated closer to the stopper surface.

  Further, cam projections 3c projecting into the upper and lower side wall openings 43b of the latch holding cylinder 43 are provided on the upper and lower surfaces of the block 3a, and the front end surfaces of the upper and lower side wall openings 43a and 43b are opposed to the cam projections 3c. Is formed with a cam receiving surface 43c.

  In the unlocked state, when an operation force in the opening direction is applied to the door 1 from the locked state to the strike opening 2a shown in FIG. 9A, the locking surface of the latch 3 is opposite to the arrow O from the strike opening 2a. Receive direction force. As a result, the latch 3 rotates clockwise until the stopper surface comes into contact with the inner wall surface of the latch holding cylinder 43, as shown in FIG. If the door opening operation is further continued from this state, the engaging surface inclined with respect to the door opening direction line receives a component force in the latch retracting direction from the periphery of the strike opening 2 a, and the latch 3 reacts with the reaction force of the compression spring 45. Against this, it is immersed in the door 1 and detached from the strike opening 2a (see FIG. 9C).

  Thereafter, when the door 1 is completely separated from the door frame 2, the latch 3 is pushed forward by the restoring force of the compression spring 45, and the cam projection 3c comes into contact with the cam receiving surface 43c. In the posture shown in FIG. 9C, the contact portion between the latch 3 and the slider 44 is offset in the door opening direction with respect to the contact portion between the cam receiving surface 43c and the cam projection 3c. , A rotational force acts counterclockwise, and the latch 3 automatically returns to the locked posture.

  When the latch 3 is in the locked posture in the open state, the stopper surface faces the door frame 2. When the door is closed from this state, the latch 3 is once immersed by the immersive force from the stopper surface. After that, it engages with the strike opening 2a.

  As shown in FIG. 8, the latch stopper 5 for maintaining the latch 3 in the locked posture in the closed state and maintaining the latched state of the latch 3 restrains the movement of the stopper arm 3b of the latch 3 and Regulate the rotation of As shown in FIG. 6B, the latch stopper 5 is formed at one end of a stopper lever 46 connected to the latch case 20. The stopper lever 46 is rotatable around the pivot 47 and is biased by the torsion spring 48 in the stopper setting direction for restraining the latch 3.

  A solenoid is used for the actuator 4. In the solenoid 4, the non-excitation state shown in FIG. 6B corresponds to the latch stopper set state, and the excitation state shown in FIG. 7A corresponds to the stopper release state. The driving force of the solenoid 4 is transmitted to the stopper lever 46 via the solenoid lever 49 connected to the driving shaft 4 a of the solenoid 4 and the relay lever 50.

  The solenoid lever 49 is rotatable around the pivot 51, and the relay lever 50 is rotatable around the pivot 52. Power transmission from the solenoid lever 49 to the relay lever 50 is transmitted by a protrusion 49 a formed on the solenoid lever 49. This is done by pressing 50 first pins 50a. Further, the relay lever 50 and the stopper lever 46 are coupled by allowing the second pin 50 b erected on the relay lever 50 to be movably inserted into the long hole 46 a of the stopper lever 46.

  When the solenoid 4 is excited from the latch stopper 5 set state shown in FIG. 6A, the solenoid lever 49 rotates counterclockwise as shown in FIG. 7A, and the projection 49a presses the first pin 50a. To do. As a result, the relay lever 50 rotates clockwise, the stopper lever 46 rotates counterclockwise, and the latching between the latch stopper 5 and the stopper arm 3b of the latch 3 is released.

  When the excitation of the solenoid 4 is stopped from this latch stopper release state, the solenoid drive shaft 4a returns to the protruding position shown in FIG. 6A and the solenoid lever 49 returns to the original position. By the return of the solenoid lever 49, the pressing force to the first pin 50a is released, the counterclockwise rotation restraint with respect to the relay lever 50 is released, and it is urged to the latch stopper set position side by the restoring force of the torsion spring 48. The stopper lever 46 moves to the latch stopper set position.

  When the above-described cylinder lock 13 or the like is unlocked, the relay lever 50 rotates clockwise by the rotation of the operation shaft 41 as shown in FIG. Since the clockwise rotation of the relay lever 50 does not affect the solenoid lever 49, it is possible to operate the relay lever 50 without receiving resistance in the non-excited state of the solenoid 4. , The stopper lever 46 rotates clockwise and the latch stopper 5 shifts to the set release state.

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 figure which shows the locking device for doors, (a) is a figure which shows a latch part, (b) is sectional drawing. It is a figure which shows the door locking device, (a) is a figure corresponding to FIG.6 (b) which shows the excitation state of a solenoid, (b) is a figure which shows the state which rotated the operating shaft. It is a figure which shows a latch, (a) is the 8A direction arrow directional view of FIG.6 (b), and the 8B-8B 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 Door 2 Door frame 3 Latch 4 Actuator 5 Latch stopper 6 Latch part 7 Door operation handle 8 Contact sensor 9 Lock control part 10 Unlocking condition determination part 11 Portable device 12 Link device 13 Cylinder lock

Claims (5)

Locked to the door frame in a protruding position from the door and driven by an actuator and a latch that unlocks the door frame when the door is pushed or pulled to release the door and releases the locked state. A latch portion provided with a latch stopper that locks the door in a closed state by restricting the immersion operation of the latch;
A contact sensor that is disposed on a door operation handle that is a handle when the door is opened, and that detects an operator's contact with the door operation handle that is applied when the opening operation force is applied in the pushing direction or the pulling direction ;
A lock control unit that drives the latch stopper on the condition that authentication for the latch stopper release authority in the operator's latch unit is established,
In addition to the establishment of authentication, the lock control unit is a door locking device including an unlocking condition determination unit that uses an operator's detection by a contact sensor within a predetermined time from the establishment of authentication as a condition for releasing the latch stopper. The lock control unit carries out authority authentication by authentication of a portable device possessed by a user and capable of outputting an authentication ID signal in response to a response request signal output from the lock control unit,
The door lock device according to claim 1, wherein the lock control unit is provided with a patrol operation unit that outputs response request signals to the portable device at predetermined time intervals.   The door locking device according to claim 1 or 2, wherein the latch stopper is driven to a locked position after a predetermined time has elapsed after being driven to unlock.   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 or 3, 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. The latch stopper is urged toward the lock position and is rotatably supported.
Between the actuator and the latch stopper, a link device that allows the relative movement of the latch stopper to the unlocking position side and presses the latch stopper to the unlocking position is interposed.
The door locking device according to claim 1, 2, 3 or 4, wherein the locking device can be operated to a unlocking position by operating a cylinder lock fixed outside the door in the locking position.

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