JP2019044360A - Display lock - Google Patents

Abstract

To provide a display lock which can inform a use stop of a room to the outside of a door by a simple operation by a manager.SOLUTION: A display part 2 of a display lock has a locking-time display area 18, an unlocking-time display area 19, and a stopping-time display area 20 to inform a use stop. The display part 2 is switched to an emergency display state that displays the stopping-time display area 20 to the outside of a door by performing a display changing operation from the outside of the door by an operation tool 3 which is used at the time of unlocking by an emergency unlocking operation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display lock.

  2. Description of the Related Art Conventionally, display locks are used to lock a door that divides the room from the outside in a toilet room, a bathroom, and the like provided in trains, public facilities, general housings, and the like. The display lock is a mechanical lock that is locked and unlocked from inside the room, and has a display unit that displays whether it is locked (in use) outside the room. In addition, the display lock is generally unlocked by an emergency unlocking operation from outside using a predetermined operation tool. This is to allow the door to be quickly opened from the outside when a situation arises where the user inside the room should be rescued.

  There are various types of operation tools, and keys, coins, minus drivers, etc. are adopted. For example, when an unspecified number of persons use a room, such as a train or a public facility, only an administrator such as a conductor who manages the room or a security guard can unlock the room from the outside, so The key is adopted. When the user of a room is specified like a general residence, generally available coin, minus driver, etc. are adopted as an operation tool (for example, patent documents 1).

JP, 2009-174176, A

  However, indoor facilities such as a toilet room and a bathroom may not be able to be used unexpectedly due to a failure, water shortage, blackout, or the like. In such a case, a manager of a conductor, security guard, etc. who controls the room must take measures to stop the use of the room. For this reason, the manager has to prepare a sticker notifying the end of use of the room in a hurry and post it on the outside of the room, which is troublesome.

  In view of the above-mentioned background, the problem to be solved by the present invention is to make it possible to notify the outside of the room of the use stop of the room by a simple operation by the manager.

  In order to achieve the above object, the present invention has a display unit for displaying the locking display area outside when in the locked state and displaying the unlocking display area outside when the unlocked state, In the display lock which is unlocked by the emergency unlocking operation from the outside using the operation tool, the display unit has a stop time display area for notifying the stop of use, and the display change from the outside using the operation tool A configuration is adopted in which the display unit is switched to an emergency display state in which the display area at stop is displayed outside by operation.

  According to the above configuration, the administrator who holds the operating tool performs the display change operation on the display lock using the operating tool, and the display unit of the display lock displays the stop time display area for notifying use stop outside the room. Can be displayed. That is, the administrator can be notified of the use stop of the room outside the room by a simple operation using only the operation tool.

  Specifically, it is preferable that locking is performed by an emergency locking operation from outside using the operation tool, and switching to the emergency display state is performed by the display change operation continuing to the emergency locking operation. In this way, since the administrator causes the emergency stop operation of the operation tool to lock and then causes the display change operation to display the stop of use, it is possible to reliably prevent the forgetting of the lock at the time of stop of use.

  Further, the display unit is rotatably disposed concentrically with the transmission shaft, which rotates in one direction according to the locking operation from the room and rotates in the other direction according to the unlocking operation from the room, and the transmission shaft. A display unit, and a clutch mechanism for transmitting and disconnecting the rotation between the display unit and the transmission shaft, the display unit being an emergency input unit that receives an operation from the operating tool, and the locking time display area , The unlocking display area, and the stop display area, the clutch mechanism transmits the rotation from the transmission shaft to the display body, and one direction of the display body by the emergency locking operation. It is also preferable to transmit rotation to the transmission shaft, block one-way rotation of the display body due to the display change operation with respect to the transmission shaft, and transmit rotation in the other direction of the display body to the transmission shaft. In this way, when in a normal state where indoor use is permitted, while switching between locking and unlocking by operation from inside the room, and switching between the locking display area and the unlocking display area on the display body are interlocked, the operation tool is displayed. By rotating in one direction, the emergency locking operation and the display change operation can be performed, and by rotating the operation tool in the other direction, the emergency unlocking operation and the release operation of the emergency display state can be performed.

  According to the present invention, the adoption of the above configuration makes it possible to notify the user of the use stop of the room to the outside with a simple operation by the manager.

A perspective view showing a display lock according to an embodiment of the present invention attached to a door Partially enlarged sectional view showing the upper cut surface of FIG. 1 from directly above The partial enlarged side view which shows the side of the indoor side of FIG. 2 (A) is a partial enlarged side view showing the side of the outdoor side of the display unit in FIG. 1, (b) is a cross-sectional view taken along the line IVb-IVb in (a) of the same figure, (c) is IVc in the same figure (b) -IVc cross section (A) is a partial enlarged side view showing the side of the outdoor side of the display unit displaying the locked display area, (b) is a cross-sectional view taken along the line Vb-Vb in (a), (c) is the same view Sectional view of the Vc-Vc line of (b) (A) is a partial expanded side view which shows the side of the outdoor side of the display part at the time of displaying a display area at the time of a stop from the state of FIG. 5, (b) is sectional drawing of the VIb-VIb line of the figure (a), (C) is a cross-sectional view taken along the line VIc-VIc of FIG. (A) is a partial enlarged side view showing the side of the outdoor side of the display unit displaying the stop display area from the state of FIG. 6, (b) is a cross-sectional view taken along the line VIIb-VIIb in (a) of FIG. c) is a cross-sectional view taken along the line VIIc-VIIc in FIG.

Hereinafter, a display lock according to an embodiment of the present invention will be described based on the attached drawings.
The display lock shown in FIGS. 1 and 2 includes a lock main body 1 for locking a door D separating an indoor and an outdoor in a closed position, a display unit 2 for displaying a predetermined display area outdoors, a lock main body 1 and a display unit from the outdoor And an operation tool 3 used for the purpose of operating 2.

  The door D is an opening / closing body that separates the room from the room, such as a toilet room or a bathroom, and may be either an open door or a sliding door. A counter member 4 for locking the display lock is attached to the chamber wall facing the door D of the door D. The display lock according to the embodiment comprises a box lock attached to the door D. The mating member 4 comprises a strike attached to the chamber wall.

  The lock body 1 is a mechanical lock mechanism that is locked by a locking operation from inside the room and unlocked by a locking operation from inside the room.

  The lock main body 1 is a box lock having a lock case 5, a hook 6 disposed so as to be capable of advancing and retracting from the lock case 5 to the counterpart member 4, and a thumb turn 7. The lock case 5 is attached to the indoor side of the door D.閂 6 is in the shape of a trapezoid. The thumb turn 7 is provided so as to be rotatable relative to the lock case 5 only between the locking position and the unlocking position. The rotation of the thumb turn 7 is converted into the forward and backward movement of the hook 6 in the lock case 5.

  When locking the lock main body 1 from the room and locking the door D, as shown in FIG. 1, the thumb-turn 7 waiting at the unlocking position is held by hand, and it is rotated in one direction to turn it to the locking position. By performing the operation, the bag 6 can be advanced. As a result, the lock body 1 is in a locked state (locked state), and the door D is locked in the closed position.

  When the lock main body 1 is unlocked from the room and the door D is opened, as shown in FIG. 3, the thumb-turn 7 waiting at the lock position is manually grasped, and this is moved in the other direction (opposite to one direction). By performing a manual operation by rotating and turning to the unlocking position, the wedge 6 can be retracted. As a result, the lock body 1 is in the unlocked state (unlocked state), and the door D can be opened.

  As shown in FIG. 1 and FIG. 4 to FIG. 7, the display unit 2 is a mechanical type that can switch the outdoor display interlockingly with the lock body 1 and switch the outdoor display area by the operation of the operation tool 3. The display mechanism of

  As shown in FIGS. 1, 4 (a) and 4 (b), the display unit 2 includes a base member 8 attached to the door D, a transmission shaft 10 connected to the pivot shaft 9 of the thumb turn 7, and a transmission shaft. A display body 11 rotatably disposed concentrically with the reference numeral 10, a cover member 12 which covers most of the display body 11, and a clutch mechanism 13 for transmitting and blocking rotation between the display body 11 and the transmission shaft 10 are provided.

  The base member 8 is formed with an axial through hole 14 penetrating the base member 8 in the axial direction of the transmission shaft 10. A cylindrical surface 15 is formed on the inner periphery of the axial through hole 14. The transmission shaft 10 is inserted into the shaft through hole 14. The cylindrical surface 15 of the base member 8 radially supports the transmission shaft 10 and the shaft portion 16 of the display 11, and maintains the transmission shaft 10 and the display 11 at a predetermined coaxiality.

  The transmission shaft 10 is integrally rotatable with the pivot shaft 9 of the thumb-turn 7 in one direction and in the other direction. Therefore, the transmission shaft 10 rotates in one direction according to the locking operation of the thumbturn 7 from the room, and rotates in the other direction according to the unlocking operation of the thumbturn 7 from the room.

  The display body 11 is disposed on the outdoor side with respect to the base member 8. The display 11 includes an emergency input unit 17 for receiving an operation from the operation tool 3, a locking display area 18 disposed on the outdoor side with respect to the base member 8, an unlocking display area 19, and a stop display area And 20.

  The emergency input unit 17 is engageable with the tip end portion of the operation tool 3 in either one direction or the other direction. The operation tool 3 is a key.

  The emergency input portion 17 is formed on the outer side of the shaft portion 16 and has a substantially semicircular circumferential direction around the shaft portion 16 and is axially recessed toward the indoor side, and one end surface of the recess in the circumferential direction The torque of one-direction rotation of the operation tool 3 can be received, and the torque of the other-direction rotation of the operation tool 3 can be received at the circumferential other end surface of the recess.

  A guide shaft 21 protruding outward is formed on the rotation center axis of the display 11. From the operation tool 3 by inserting the hollow shaft portion of the operation tool 3 from outside into the guide shaft 21 of the display body 11 and performing an emergency locking operation to rotate the operation tool 3 in one direction or an emergency unlocking operation to rotate in the other direction. The display body 11 receiving the rotational torque of the emergency input unit 17 can be rotated in the same direction as the operation tool 3.

  The locking display area 18 is composed of a surface portion that transmits information corresponding to the locking state to the outside. In the lock display area 18, character information meaning "in use" is described. The unlocking display area 19 includes a surface portion that transmits information corresponding to the unlocked state to the outside. In the unlocking display area 19, character information meaning "vacant" is described. The stop time display area 20 includes a surface portion that transmits information corresponding to a use stop state where the room can not be used to the outside. In the stop time display area 20, character information that means "stop use" is described. The display areas 18 to 20 are arranged circumferentially around the emergency input unit 17. Each of these display areas 18 to 20 is assigned an angle area of 90 ° around the shaft portion 16.

  The cover member 12 is made of a non-transparent member having a display window 22 and an operation port 23. The cover member 12 is attached to the base member 8 from the outdoor side with respect to the display body 11. The display window 22 is an opening having a shape such that only one of the display areas 18 to 20 is exposed in the axial direction when the display body 11 is at rest. The operation port 23 is an opening having a shape that allows the operation tool 3 to be inserted into the emergency input unit 17 and the guide shaft 21 from outside.

  The clutch mechanism 13 rotates in both directions (one direction and the other direction) in the same phase between the transmission shaft 10 and the display body 11 within the rotation range allowed by the rotation shaft 9 of the thumb turn 7 in the lock main body 1 The transmission clutch 10 is configured as a meshing clutch capable of interrupting the rotation of the display body 11 in both directions with respect to the transmission shaft 10 which can be transmitted and which can not rotate outside the aforementioned rotation range.

  The clutch mechanism 13 includes a coil spring 24 interposed between the transmission shaft 10 and the base member 8, and four first engagement claws 25 a to 25 d formed on the indoor end surface of the shaft portion 16 of the display body 11. The second engaging claw 26 formed on the indoor side end face of the shaft portion 16 of the display body 11, and the four engaging grooves 27a to 27d formed on the outer end face of the transmission shaft 10, and transmission And an engagement recess 28 which is recessed radially from the outer diameter surface of the shaft 10. The first engagement claws 25 a to 25 d are formed at 90 ° intervals around the shaft portion 16. The engagement grooves 27a to 27d are formed in phases corresponding to the first engagement claws 25a to 25d. The engagement recess 28 is shaped so as to be radially recessed from the outer diameter surface of the transmission shaft 10 guided by the cylindrical surface 15 of the guide member 8, and the movement of the second engagement claw 26 with the cylindrical surface 15. Form a space. The first engagement claw, the engagement groove, the second engagement claw, and the engagement recess may be formed on either the display body or the transmission shaft.

  As shown in FIG. 1 and FIG. 4A, when the display unit 2 displays the unlocking display area 19 from the display window 22 of the cover member 12 outside when the thumb turn 7 is in the unlocking position As shown in FIGS. 4B and 4C, the first engagement claws 25a to 25d and the engagement grooves 27a to 27d mesh on a one-to-one basis, and the second engagement claws 26 surround the engagement recess 28. It is in contact with one end of the direction. From this state, the rotation transmission by the above-mentioned meshing is achieved by performing the locking operation of rotating the thumb-turn 7 in one direction or by performing the emergency locking operation using the operating tool 3 from outside the room. And the display 11 are rotated in one direction 90 ° in the same phase. As a result, as shown in FIGS. 3 and 5A, the thumb turn 7 is in the locking position, and the display unit 2 is in the state of displaying the locking display area 18 outside when the locking state is established.

  In the state shown in FIGS. 3 and 5A, the unlocking operation for rotating the thumb turn 7 in the other direction is performed, or the emergency unlocking operation using the operation tool 3 is performed outside the room. As shown in FIGS. 5 (b) and 5 (c), the rotation transmission is achieved by the engagement between the above-mentioned engaging grooves 27a to 27 and the first engaging claws 25a to 25d, and the display 11 and the transmission shaft 10 are the same. Rotated 90 ° in the other direction in phase. As a result, as shown in FIGS. 1 and 4A, the thumb turn 7 is in the unlocked position, and the display unit 2 is in the state of displaying the unlocked state display area 19 outside when the unlocked state is established.

  As described above, after the display unit 2 is brought into the state of FIG. 5 (a) by the emergency locking operation and the thumb turn 7 is in the locking position of FIG. Thus, as shown in FIGS. 6B and 6C, the engaging grooves 27a to 27a of the transmission shaft 10 which can not rotate in one direction, and the first engaging claws 25a to 25d of the display body 11 which is going to rotate one direction. At the contact point with this, there is a component force to the inner side in the axial direction, and this component force compresses the coil spring 24 and retracts the transmission shaft 10 to the inner side in the axial direction, thereby disengaging the aforementioned meshing The first engaging claws 25 a to 25 d rotating in one direction slide on the end face of the transmission shaft 10. For this reason, the transmission of the one-way rotation from the display 11 to the transmission shaft 10 is interrupted, and only the display 11 is rotated in one direction with respect to the transmission shaft 10 at rest as shown in FIG. When the display body 11 is rotated by 90 ° in one direction as compared with the state of FIG. 5A by this display change operation, as shown in FIG. As shown in FIGS. 7B and 7C, the first engagement claws 25a to 25d and the engagement grooves 27a to 27 mesh with each other in a one-to-one manner.

  When the display unit 2 is in the state shown in FIG. 7A and the thumb turn 7 is in the locked position shown in FIG. 3, the display body 11 is illustrated by performing an emergency unlocking operation using the operation tool 3 from outside. The transmission shaft 10 is 90 ° in phase with the display body 11 by the engagement of the first engagement claws 25a to 25d and the engagement grooves 27a to 27 until it is rotated by 90 ° in the other direction from the state of 7 (a). It is rotated in the other direction. As a result, the thumb turn 7 is in the unlocked position shown in FIG. 1, and the display unit 2 is in the state of displaying the locking display area 18 outside when the locked state is in the unlocked state. Further, by rotating the operation tool 3 in the other direction, between the engaging grooves 27a to 27a of the transmission shaft 10 which can not be rotated in the other direction and the first engaging claws 25a to 25d of the display body 11 to rotate. A component force is generated in the same manner as described above, and the first engaging claws 25a to 25d rotating in the other direction slide on the end face of the transmission shaft 10. For this reason, the transmission of the rotation in the other direction from the display 11 to the transmission shaft 10 is blocked, and only the display 11 is rotated in the other direction with respect to the transmission shaft 10 at rest. As a result, when the display body 11 is rotated 180 ° in the other direction from the state of FIG. 7A, the display unit 2 is in the state of displaying the unlocking display area 19 in the unlocked state (FIG. 4). See (a)).

  The second engagement claw 26 and the engagement recess 28 correspond to the auxiliary rotation mechanism disclosed in Patent Document 1, and the rotation transmission is abnormally interrupted within the rotation range of the rotation shaft 9 of the thumb turn 7 At this time, rotation transmission is performed by the second engagement claw 26 and the engagement recess 28 so that the corresponding display of the locked state and the locked display area, and the unlocked state and the unlocked display area do not shift.

  As described above, according to the display lock according to the embodiment, the display unit 2 has the stop time display area 20 for notifying the use stop, and the display unit 2 is stopped by the display change operation from the outside using the operation tool 3 Since the time display area 20 is switched to the emergency display state to be displayed outside the room, when a situation where the use of the room should be stopped occurs, the manager holding the operation tool 3 closes the door D and uses the operation tool 3 After the emergency locking operation is performed from outside the room and locking is performed, the stop display area 20 can be displayed on the display unit 2 and the use stop can be transmitted to the outside by a simple operation of simply performing the display changing operation. In addition, when the manager is in a situation where indoor use is permitted, the operator performs an emergency unlocking operation from outside using the operation tool 3 to unlock, and further cancels the emergency display state and the unlocking display area 19 Can be displayed outside the room.

  In addition, according to the display lock according to the embodiment, since the lock is performed by the emergency locking operation from the outside using the operation tool 3 and the display changing operation following the emergency locking operation is switched to the emergency display state Since the display area 20 at the time of stop is displayed by the display change operation after locking by the emergency locking operation of the operation tool 3, it is possible to reliably prevent the forgetting of the lock when the use is stopped.

  Further, according to the display lock according to the embodiment, the transmission shaft 10 which the display unit 2 rotates in one direction according to the locking operation from the room and rotates in the other direction according to the unlocking operation from the room; It has a display body 11 rotatably disposed concentrically with the transmission shaft 10, and a clutch mechanism 13 for performing rotation transmission and disconnection between the display body 11 and the transmission shaft 10, and the display body 11 is provided from the operation tool 3 It has an emergency input unit 17 for receiving an operation, a lock display area 18, an unlock display area 19 and a stop display area 20, and the clutch mechanism 13 rotates the transmission shaft 10 from the display shaft 11. The rotation is transmitted to the shaft portion 16 and the one-way rotation of the display 11 by the emergency locking operation is transmitted to the transmission shaft 10, and the one-way rotation of the display 11 by the display change operation is blocked from the transmission shaft 10 Transmission in the other direction to the transmission shaft 10, so that use in the room is permitted. In the state, while switching between locking and unlocking by the operation of the thumb-turn 7 from the room and switching of display of the locking display area 18 and the unlocking display area 19 in the display 11 are interlocked, the operating tool 3 is rotated in one direction. Thus, the emergency locking operation and the display change operation can be performed, and by rotating the operation tool 3 in the other direction, the emergency unlocking operation and the release operation of the emergency display state can be performed.

  In the embodiment, the box lock is illustrated as the lock body, but it may be changed to other types of mechanical lock such as a slide latch lock, a squeeze lock, a tubular lock, and the like. Also, it does not matter whether the door is left-handed open or right-handed open. In addition, the display unit switches the unlocking display area, the locking display area, and the stop display area by one-way rotation, but the locking and unlocking rotation direction of the thumb turn and the unlocking display so as to switch by rotation in the other direction. The arrangement of areas may be changed. Further, the display area at the time of locking in the display unit is not limited to the text message, and may be displayed in different colors or illustrations. Moreover, although the key was illustrated as an operation tool, you may employ | adopt a coin etc. FIG.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. Accordingly, the scope of the present invention is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Reference Signs List 1 lock body 2 display section 3 operation tool 7 thumbt 10 transmission shaft 11 display body 13 clutch mechanism 17 emergency input section 18 lock display area 19 unlock display area 20 stop display area

Claims (3)

An emergency unlocking from the outside using a predetermined operation tool is provided with a display unit for displaying the locking display area outside in the locked state and displaying the unlocking display area outside in the unlocked state. In the display lock unlocked by the operation,
The display unit has a stop display area for notifying stop of use;
A display lock characterized in that the display unit is switched to an emergency display state in which the display area at stop is displayed outside by a display change operation from outside using the operation tool.   The display lock according to claim 1, wherein the display lock is locked by an emergency locking operation from outside using the operation tool, and is switched to the emergency display state by the display changing operation subsequent to the emergency locking operation. A display in which the display unit rotates in one direction according to the locking operation from the room and rotates in the other direction according to the unlocking operation from the room, and a display rotatably disposed concentrically with the transmission axis A body, and a clutch mechanism for transmitting and blocking rotation between the display body and the transmission shaft;
The display body has an emergency input unit which receives an operation from the operation tool, the locking display area, the unlocking display area, and the stop display area.
The clutch mechanism transmits the rotation from the transmission shaft to the display, transmits the one-way rotation of the display by the emergency locking operation to the transmission shaft, and one direction of the display by the display change operation. The display lock according to claim 2, wherein rotation is blocked with respect to the transmission shaft, and rotation in the other direction of the display is transmitted to the transmission shaft.

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