JP2009079405A - Door locking and unlocking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door locking and unlocking device which enables the free adjustment of the operating time and timing of the maintenance and release of a released state of a locking mechanism. <P>SOLUTION: A release lever 8 for restricting the motion of an open lever 7 for moving a sliding claw 4 is provided, and connected to a movable iron core 12a of a solenoid 12. The release lever is disengaged from the open lever in an on-state, and engaged with the open lever in an off-state. A locking lever 10 is provided to control the motion of the release lever with respect to the open lever in the off-state, and connected to a movable iron rod 13a of a solenoid 13. The locking lever is disengaged from the release lever in the on-state, and engaged with the release lever in the off-state. A tongue piece portion 2a of a cylinder lock 2 can simultaneously bring about the disengagement of the release lever from the open lever, and the disengagement of the locking lever from the release lever. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an unlocking / locking device for a door of a key box or a safe. In particular, unlocking with a cylinder lock is possible as well as unlocking and locking operations using an electric circuit.

  2. Description of the Related Art Conventionally, as disclosed in Patent Document 1, for unlocking / locking a door of a safe or the like, there is one in which a password is input by a numeric keypad to operate a solenoid to control a door locking mechanism.

  In addition, as shown in Patent Document 2 and Patent Document 3, in addition to unlocking / locking by a solenoid, for the convenience of the user, a key or dial is operated to operate a door lock mechanism without entering a password. Some have been released.

  In any of the conventional examples described above, unlocking / locking by a solenoid is performed by a single solenoid. Since the lock mechanism is released by one solenoid, the release state of the lock mechanism is held by a mechanical mechanism.

  For example, in the device disclosed in Patent Document 2, the claw portion of the locking member is engaged with the engagement hole of the stop member, and the release state of the lock mechanism is maintained even after the solenoid is de-energized. I am doing so. And the release state of this lock mechanism is released by introducing the elbow part of the collar member into the open receiving groove of the restraining member in order to open the door.

Moreover, in what is shown in Patent Document 3, when the lock member is moved to the release position in the release state of the lock mechanism, the rotating plate comes into contact with the abutting portion at the lower end of the horizontally long portion of the lock member, and the lock mechanism is released. Is to be retained. This state is maintained until the door is closed, and when the door is closed, the bar to which the rotary plate is connected hits the frame of the safe body, so that the rotary plate rotates and the unlocked state of the lock mechanism is released. ing.
Japanese Utility Model Publication No. 54-21091 Japanese Patent Publication No. 3-58432 JP-A-8-199873

  There are the following inconveniences due to the mechanical mechanism for maintaining the release state of the lock mechanism and releasing the release state. For example, in the case of the one shown in Patent Document 2, if the saddle member is operated while the door is opened, there is an inconvenience that the unlocked state of the lock mechanism is released without permission. . Once the unlocking state of the locking mechanism is released, it is necessary to release the locking mechanism by inputting the password again even when the door is open.

  In the case of the one shown in Patent Document 3, the unlocking state of the lock mechanism is maintained while the door is open, but the bar to which the rotating plate is connected is attached to the frame of the safe body when the door is closed. If the contact is not properly made, the release state of the lock mechanism may not be released. On the other hand, if the door is not fully opened, the bar may not be completely separated from the frame of the safe body, and the unlocked state of the lock mechanism may not be maintained.

  In any case, it is impossible to accurately hold and release the unlocked state of the lock mechanism because the lock mechanism is released by one solenoid and the release and hold state of the lock mechanism is held by a mechanical mechanism. There is its cause. In addition, the mechanical mechanism for holding and releasing the unlocked state of the lock mechanism has a very limited range of operation choices, and the unlocked state of the lock mechanism is adapted to the convenience of the user. The timing of holding and releasing cannot be adjusted.

  The present invention has been made to solve such problems, and the object of the present invention is to use two solenoids to operate each of holding and releasing the unlocked state of the lock mechanism. The time and timing can be adjusted freely, the solenoid can be operated with the minimum amount of operation to minimize power consumption, and even when the locked state is maintained by two solenoids, the cylinder lock An object of the present invention is to provide a door unlocking / locking device which can be manually unlocked by simultaneously releasing two engagement states by two solenoids by operation.

  In order to achieve the above object, the door unlocking / locking device of the present invention allows the operation of a slide claw that releases the lock mechanism by inputting a personal identification number and maintains the closed state of the door. In the door unlocking / locking device, the lock mechanism is a release lever that can be engaged with and disengaged from the open lever in order to control the operation of the open lever for moving the slide claw that holds the door closed. The release lever is coupled to the movable iron core of the release lever solenoid, and when the release lever solenoid is on, the movable iron core is attracted to the coil side of the release lever solenoid and the release lever is moved toward the open lever. When the engagement is released and the open lever can move freely, and the release lever solenoid is off, the movable iron core The open lever lock mechanism that protrudes from the coil by the force of the engagement and engages the release lever with the open lever to restrict the movement of the open lever, and controls the operation of the release lever with respect to the open lever For this purpose, a lock lever that can be engaged and disengaged with respect to the release lever is provided, the lock lever is connected to a movable iron core of the solenoid for the lock lever, and when the lock lever solenoid is on, the movable iron core is used for the lock lever. The lock lever is pulled away from the coil side of the solenoid to disengage the lock lever so that the release lever can move freely. When the lock lever solenoid is off, the movable iron core is moved by the spring force from the coil. The lock lever is protruded against the release lever. Chromatography is one that is composed of a release lever locking mechanism so as to regulate the movement of the release lever engages.

  According to another aspect of the present invention, in addition to the above-described invention, a cylinder lock having a key hole on the door surface is provided, and the engagement of the release lever with respect to the open lever by the tongue piece portion of the cylinder lock; The engagement of the lock lever with the release lever can be released simultaneously regardless of the input of the password.

  According to another aspect of the present invention, in addition to the above-described invention, when the engagement of the lock lever with respect to the release lever is released by the cylinder lock, a new password can be input.

  By using two solenoids, it is possible to freely adjust the operation time and timing for each of the unlocked state holding and releasing states for unlocking and locking, which is convenient for the user. Can be good. In addition, since the two solenoids maintain the engagement state of the respective lock mechanisms when the power is off, the minimum power consumption required for the operation even if two solenoids are used. That's okay. Furthermore, even when the locked state is maintained by two solenoids, it is possible to unlock the two solenoids by manually releasing the two engaged states simultaneously by operating the cylinder lock. Can be unlocked and locked even when the battery capacity is insufficient.

  An embodiment of a door unlocking / locking device of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a key box using the door unlocking / locking device of the present invention, and FIG. 2 is a perspective view showing a state in which the door is opened. As shown in FIG. 2, the frame on the main body side is provided with an engaging groove 4a that engages with the slide claw 4 that holds the door closed. Also, as shown in FIG. 3, an open lever 7 for moving the slide claw 4 is connected to the surface of the door on the back side of the door, and a key of the cylinder lock 2 for manually releasing the lock mechanism. An input key 3 is provided for inputting a hole and a password, and for unlocking and locking the lock mechanism. The door unlocking / locking device of the present invention is provided on the back side of the door. Moreover, it is the same as that of the conventional thing that the battery which becomes a power supply, the switchboard for control, etc. are equipped in the appropriate location of the door.

  When the lock mechanism is released, the puller 1 can be slid in the direction of the arrow. By moving the slide claw 4 shown in FIG. 2, the engagement between the slide claw 4 and the engagement groove 4a is released, and the door is opened. Is possible. The input key 3 is composed of, for example, a numeric keypad and other function keys necessary for unlocking / locking, and the lock mechanism is released when a correct password is inputted. These operations are the same as the conventional ones. Moreover, the structure of the surface of a door is not restricted to what was illustrated.

  Next, details of the lock mechanism of the door unlocking / locking device of the present invention will be described with reference to FIGS. As described above, the present apparatus is provided on the back side of the door, and the door can be unlocked and locked by the handle 1 and the input key 3 on the door surface. FIG. 3 is an explanatory view showing a state in which the lock mechanism of the door unlocking / locking device of the present invention is locked, and FIG. 4 is a diagram showing that the lock mechanism of the door unlocking / locking device of the present invention is released. FIG. 5 is an explanatory view showing a state where the lock mechanism of the door unlocking / locking device of the present invention is released by the cylinder lock.

  The slide claw 4 for engaging the engagement groove 4a provided in the frame on the main body side with the hook-shaped tip to keep the door closed is in contact with the link 6 at the end thereof. By movement, each slides up and down in the drawing. The upper and lower slide claws 4 are attracted to each other by a slide claw tension spring 5 so as to keep the door closed. The slide claw 4 can be operated without the rotation of the link 6. For example, when the door is opened, the upper and lower slide claws 4 are attracted to each other by the slide claw tension spring 5. When the door is closed in this state, the hook-shaped tip of the slide claw 4 is once pushed up and down at the end of the engagement groove 4a of the frame on the main body side, and then pulled and engaged with each other by the slide claw tension spring 5 It engages with the groove 4a and maintains the closed state of the door.

  A substantially rectangular open lever 7 connected to the puller 1 on the front side of the door slides left and right in the drawing by the movement of the puller 1, and one end is an open lever pushing portion 7 a that rises and contacts the link 6. . In addition, a notch is formed in the lower surface at a position opposite to the open lever pressing portion 7a, and the open lever lock portion 7b for restricting the movement of the open lever 7 is provided.

  Below the open lever lock portion 7b of the open lever 7, a release lever 8 and a manual lever 9 which are substantially rectangular and of the same size are arranged so that the release lever 8 is closer to the back of the door. Two manual levers 9 are arranged on the same axis so as to be independently slidable in the drawing.

  The upper end of the release lever 8 is formed with a release lever projection 8a that engages with the open lever lock portion 7b, and the lower end of the release lever 8 is formed with a release lever abutting portion 8b that contacts the lower end 9a of the manual lever 9. It is. The lower end of the release lever 8 is connected to the movable iron core 12 a of the release lever solenoid 12. The movable iron core 12a is urged by a spring 12b in a direction in which the movable iron core 12a protrudes from the coil 12c of the release lever solenoid 12. Further, the release lever 8 is formed as a release lever lock portion 8c with which a notch is formed at a substantially intermediate position on the right side in the drawing, and a projection 10a of the lock lever 10 described later is engaged.

  When the release lever solenoid 12 is on, the movable iron core 12a is attracted toward the coil 12c, so that the release lever 8 also moves downward, and the release lever protrusion 8a is disengaged from the open lever lock portion 7b. Will be. On the other hand, when the release lever solenoid 12 is off, the movable iron core 12a is raised by the spring 12b, the release lever 8 is also moved upward, and the release lever protrusion 8a is engaged with the open lever lock portion 7b. The open lever lock mechanism basically includes the open lever 7 and the release lever 8 described above.

  The manual lever 9 has a manual lever tension spring 14 attached to the upper end thereof, and the other end of the manual lever tension spring 14 is connected to the open lever 7 so that the manual lever 9 is pulled upward in the drawing. Energized. As shown in FIG. 3, when the manual lever 9 is pulled upward, the manual lever lower end 9a is not in contact with the release lever abutting portion 8b. On the other hand, when the tongue piece 2a of the cylinder lock 2 is rotated as shown in FIG. 5, the manual lever upper end 9b is pushed by the tongue piece 2a, and the manual lever lower end 9a abuts on the release lever abutting portion 8b. Thus, the release lever 8 is pushed downward against the force of the spring 12b.

  The lock lever 10 is substantially rectangular and is provided to be slidable left and right in the drawing. The lock lever 10 has a lock lever protrusion 10a that engages with the release lever lock 8c at the left end, and the right end is connected to the movable iron core 13a of the lock lever solenoid 13. The movable iron core 13a is biased by a spring 13b in a direction in which the movable iron core 13a protrudes from the coil 13c of the lock lever solenoid 13.

  When the lock lever solenoid 13 is on, the movable iron core 13a is attracted toward the coil 13c, so that the lock lever 10 is also moved to the right, and the lock lever protrusion 10a is engaged with the release lever lock portion 8c. It will be solved. On the other hand, when the lock lever solenoid 13 is off, the movable core 13a protrudes from the coil 13c by the spring 13b, the lock lever 10 also moves to the left, and the lock lever protrusion 10a engages with the release lever lock portion 8c. Become. The release lever lock mechanism basically includes the release lever 7 and the lock lever 8 described above.

  Further, the upper end of the lock lever 10 on the side where the lock lever protrusion 10a is formed is bent to form a lock lever abutting portion 10b, and the manual lever 9 is formed by bending the upper right side in the drawing of the manual lever 9. The lever abutting portion 9c can be contacted.

  The cylinder lock 2 is provided at a position close to the manual lever upper end 9b of the manual lever 9, and when the tongue piece portion 2a of the cylinder lock 2 rotates as shown in FIG. 5, the manual lever upper end 9b becomes the tongue piece. When the manual lever lower end 9a is pressed against the release lever abutting portion 8b by being pushed by the portion 2a, the release lever 8 is pushed down against the force of the spring 12b. Further, a switch operating portion 9d is formed on the side opposite to the manual lever abutting portion 9c, and when the manual lever 9 is pushed downward by the tongue piece portion 2a of the cylinder lock 2, the switch operating portion 9d The micro switch 11 is operated by contacting the switch 11.

  The manual lever 9 serves to release the lock of the open lever lock mechanism and the release lever lock mechanism at the same time when the cylinder lock 2 is unlocked. That is, when the manual lever 9 is pushed down by the tongue 2a of the cylinder lock 2, the release lever 8 is engaged with the open lever 7 while keeping the release lever 8 so that the lock lever 10 is not engaged with the release lever 8. Play the role of solving the match.

Next, the operation of the door unlocking / locking device of the present invention will be described.
The locked state in which the open lever lock mechanism shown in FIG. 3 is engaged and the release lever lock mechanism is in the released state, and the unlocked state in which the open lever lock mechanism shown in FIG. 4 is in the released state and the release lever lock mechanism is in the engaged state. Each of the state and the manual unlocking state which is manually unlocked by the cylinder lock shown in FIG. 5 will be described.

[Locked state]
In the locked state, the release lever solenoid 12 and the lock lever solenoid 13 are turned off. Basically, the movable iron cores 12a and 13a are protruded from the coils 12c and 13c by the springs 12b and 13b, respectively. It has become. Therefore, in FIG. 3, the release lever 8 is moved upward and the lock lever 10 is moved leftward. The slide claw 4 is pulled toward the center by the slide claw tension spring 5 and is engaged with the engagement groove 4a of the frame on the main body side to keep the door closed.

  In this state, as shown in FIG. 3, the open lever 7 is pushed by the link 6 and moves to the right, the release lever projection 8a engages with the open lever lock 7b, and the open lever 7 moves to the left. Is regulated. Further, since the manual lever 9 is pulled upward by the manual lever tension spring 14, there is a sufficient gap between the manual lever lower end 9a and the release lever abutting portion 8b, and the manual lever 9 is connected to the movable iron core 12a. The release lever 8 is not hindered from moving upward by the spring 12b of the release lever solenoid 12.

  Further, the lock lever protrusion 10a comes out of the release lever lock portion 8c and is in contact with the lower surface of the release lever lock portion 8c. This is not related to the open / closed state of the door, and when the unlocked state is changed to the locked state, the solenoid 13 for the lock lever is once turned on and the lock lever 10 is moved to the coil 13c side to the release lever lock portion 8c. As a result, the release lever 8 is pushed upward by the spring 12b and the release lever projection 8b is engaged with the open lever lock portion 7b, and then the lock lever projection 10a is disengaged. Even when the solenoid 13 is turned off, the lock lever protrusion 10a is in contact with the lower surface of the release lever lock 8c without engaging the release lever lock 8c.

[Unlocked state]
If the password entered from the input key 3 is correct, the release lever solenoid 12 is turned on for a certain time (for example, 1 second), and the movable iron core 12a is attracted toward the coil 12c, so that the release lever 8 moves downward. . Then, the first release lever projecting portion 8a is positioned below the open lever lock portion 7b, and the engagement between both is released. As a result, the open lever 7 can move freely. When the pull lever 1 is operated to move the open lever 7 to the left in FIG. 4, the open lever pushing portion 7a pushes the link 6 so that the link 6 rotates. The slide claw 4 is pushed by the link 6 and moved outward (upward and downward in the drawing) against the slide claw tension spring 5 to disengage the slide claw 4 from the engagement groove 4a. The door can be opened. Further, the slide claw 4 is attracted to each other by the slide claw tension spring 5 except when the slide claw 4 is forcibly pushed by the link 6.

  In addition, when the release lever 8 is lowered, the position of the release lever lock portion 8c coincides with the position of the lock lever protrusion 10a of the lock lever 10. Therefore, the lock lever projection 10a is in contact with the lower surface of the release lever lock portion 8c in the locked state, but the lock lever 10 is moved to the left by the spring 14a and the release lever lock portion 8c and the lock lever projection portion. 10a engages. As a result, the release lever 8 is held in a state where the release lever protrusion 8a is disengaged from the open lever lock portion 7b against the upward force of the spring 12b. Then, after the release lever lock portion 8c and the lock lever protrusion 10a are engaged, the release lever solenoid 12 is automatically turned off.

  Also, if the release lever solenoid 12 is turned on and the door can be opened in the unlocked state, a certain time has elapsed since the release lever solenoid 12 was turned on in order to eliminate the need for a locking operation when the door is closed. After that (for example, after 5 seconds), the solenoid 13 for the lock lever is turned on to disengage the lock lever protrusion 10a from the release lever lock 8c, and the release lever protrusion 8a engages the open lever lock 7b. And the locking mechanism is set to the locked state shown in FIG. By returning to this state, even if the door is not opened and closed after the unlocking operation is performed, the door is automatically locked and safety is maintained.

[From unlocked to locked]
As described above, the release lever protrusion 8a engages with the open lever lock 7b, and the lock mechanism is in the locked state shown in FIG. 3, so that when the door is closed in this state, The tip of the shape is once pushed up and down at the end of the engagement groove 4a of the frame on the main body side, and then pulled together by the slide claw tension spring 5 to engage with the engagement groove 4a, thereby closing the door. Will hold. Since the lock mechanism is locked in advance, the lock mechanism is locked simply by closing the door.

[Other examples from the unlocked state to the locked state]
In the above unlocking operation, after the release lever lock portion 8c and the lock lever protrusion 10a are engaged, the release lever solenoid 12 is turned off, and then the lock lever solenoid 13 is kept off and the release lever lock portion 8c. And the engagement of the lock lever protrusion 10a is maintained to maintain the state shown in FIG. The release lever solenoid 12 may be turned off by detecting the engagement of the release lever lock portion 8c and the lock lever protrusion 10a with a micro switch or the like, or after a certain time elapses with a timer, for example, It may be turned off 2 seconds after being turned on.

  When the door is closed in this state, the hook-shaped tip of the slide claw 4 is once pushed up and down at the end of the engagement groove 4a of the frame on the main body side, and then pulled and engaged with each other by the slide claw tension spring 5 The door 4 is engaged with the groove 4a. Then, the input key 3 is operated to press a key serving as a lock switch.

  When a predetermined key is pressed, the lock lever solenoid 13 is turned on for a predetermined time (for example, 1 second), and the movable iron core 13a is attracted toward the coil 13c, whereby the lock lever 10 moves to the right. When the lock lever 10 moves to the right, the engagement of the lock lever protrusion 10b with the release lever lock 8c is released. Then, the release lever 8 is moved upward by the spring 12b of the release lever solenoid 12, and the release lever protrusion 8a is engaged with the open lever lock portion 7b. As a result, the movement of the open lever 7 is restricted and the locked state is established.

  Instead of turning on the lock lever solenoid 13 by operating the input key 3, for example, the micro switch or the like detects that the open lever 7 has reached a predetermined position for closing the door, Based on this detection, the lock lever solenoid 13 may be turned on. Further, the lock lever solenoid 13 may be configured so that the operation time is delayed by a timer or the operation time can be adjusted.

[Manual unlocking state]
In the locked state, a key is inserted from the key hole of the cylinder lock 2, and the tongue piece 2a of the cylinder lock 2 is rotated in the direction of the arrow. Then, the tongue piece 2a comes into contact with the upper end 9b of the manual lever, and pushes the manual lever 9 downward against the manual lever tension spring 14 as the tongue piece 2a rotates. Eventually, when the manual lever lower end 9a comes into contact with the release lever abutting portion 8b, the release lever 8 also moves downward against the spring 12b. Then, when the release lever 8 moves downward, the release lever protrusion 8a is disengaged from the open lever lock portion 7b in a state where the tongue piece 2a is turned around, and the open lever 7 can move freely. Become. Thereby, it will be in an unlocked state.

  When the manual lever 9 is moved downward, the lock lever protrusion 10a is initially brought into contact with the lower surface of the release lever lock portion 8c and its position is regulated. It comes into contact with the lever abutting portion 9c and is regulated so as to stop at the same position. When the manual lever 9 is moved downward, the switch operating portion 9d of the manual lever 9 comes into contact with the micro switch 11 so that a new password can be input. This is to ensure safety after manual unlocking once.

[From manually unlocked to locked]
Turn the tongue 2a of the cylinder lock 2 in the direction opposite to the arrow. Then, the manual lever 9 is moved upward by the manual lever tension spring 14, and the release lever 8 is moved upward by the spring 12 a of the release lever solenoid 12 as the manual lever 9 is moved upward. Then, when the tongue piece 2a is separated from the manual lever upper end 9b, the release lever projection 8a is engaged with the open lever lock portion 7b to be locked.

  When the manual lever 9 moves upward, the lock lever abutting portion 10b is in contact with the manual lever abutting portion 9c, but the lock lever protrusion 10a continues to abut on the lower surface of the release lever lock portion 8c. Thus, the lock lever 10 is restricted from entering the release lever lock portion 8c. Therefore, the release lever 8 moves upward without engaging with the lock lever 10 and engages with the open lever 7.

  The door unlocking / locking device of the present invention is not limited to the door of a safe or a key box, and can be used for various doors as long as it can secure a power source. Further, in the case of power shortage, the cylinder lock can be unlocked and locked by manually operating, so that the range of use is extremely wide.

It is a perspective view of the key box using the door unlocking and locking device of the present invention. It is a perspective view in the state where the door of the key box of FIG. 1 was opened. It is explanatory drawing which shows the state in which the locking mechanism of the unlocking | locking / locking apparatus of the door of this invention is locked. It is explanatory drawing which shows the state by which the lock mechanism of the unlocking | locking / locking apparatus of the door of this invention is cancelled | released. It is explanatory drawing which shows the state by which the locking mechanism of the door unlocking | locking / locking apparatus of this invention was cancelled | released by the cylinder lock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pull handle 2 Cylinder lock 2a Tongue piece part 3 Input key 4 Slide claw 4a Engagement groove 5 Slide claw tension spring 6 Link 7 Open lever 7a Open lever pushing part 7b Open lever lock part 8 Release lever 8a Release lever projection part 8b Release Lever contact portion 8c Release lever lock portion 9 Manual lever 9a Manual lever lower end 9b Manual lever upper end 9c Manual lever contact portion 9d Switch actuator 10 Lock lever 10a Lock lever protrusion 10b Lock lever contact portion 11 Micro switch 12 Release Lever solenoid 12a Movable iron core 12b Spring 12c Coil 13 Lock lever solenoid 13a Movable iron core 13b Spring 13c Coil 14 Manual lever tension spring

Claims (3)

In the door unlocking / locking device, the lock mechanism is released by inputting the personal identification number, and the sliding claw that holds the door closed can be operated.
The locking mechanism is
In order to control the operation of the open lever for moving the slide claw that keeps the door closed, a release lever that can be engaged with and disengaged from the open lever is provided, and the release lever is connected to the movable iron core of the solenoid for the release lever. When the release lever solenoid is on, the movable iron core is drawn toward the coil of the release lever solenoid so that the release lever is disengaged from the open lever so that the open lever can move freely. When the release lever solenoid is off, the movable iron core protrudes from the coil by the force of the spring, and the release lever engages with the open lever to restrict the movement of the open lever. When,
In order to control the operation of the release lever with respect to the open lever, a lock lever that can be engaged with and disengaged from the release lever is provided, the lock lever is coupled to a movable iron core of the lock lever solenoid, and the lock lever solenoid When turned on, the movable iron core is drawn toward the coil side of the lock lever solenoid so that the lock lever is disengaged from the release lever so that the release lever can move freely, and when the lock lever solenoid is turned off. The movable iron core comprises a release lever lock mechanism that protrudes from the coil by the force of a spring and that engages the lock lever with the release lever to restrict the movement of the release lever. The door unlocking and locking device.   A cylinder lock provided with a key hole on the door surface is provided, and an input of the code number is performed by engaging the release lever with the open lever and the lock lever with the release lever by the tongue portion of the cylinder lock. The door unlocking / locking device according to claim 1, wherein the door unlocking / locking device can be simultaneously released irrespective of the operation.   The door unlocking / locking device according to claim 2, wherein when the lock lever is released from engagement with the release lever by the cylinder lock, a new password can be input.

Images