JPH0740945U - Door automatic locking device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] When you enter the room and close the door, it will be locked automatically.
Moreover, a door locking device is provided, which requires only one lock operation for unlocking when leaving the room. [Structure] The automatic locking device includes a contact detector, an open / close detector,
The occupant detector and the control unit are provided to store the unlocked state, and the solenoid 6 is energized or deenergized by the detection of each detector. When the solenoid 6 is energized, the lock pin 7 coupled to the plunger is inserted into the pin engaging portion 5 of the latch fitted in the strike, and when the energization is stopped, the lock pin 7 is the pin. The engaging portion 5 is disengaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for automatically locking a closed door of a private room after entering the room.

[0002]

[Prior art]

 For example, when entering a private room such as a bathroom or toilet, it is desirable to close and lock the door.The conventional non-automatic locking device for the door in this type of private room is to close and lock the door after entering. , It is configured to unlock and open the door before leaving the room.

[0003]

[Problems to be solved by the device]

 Therefore, the work of locking and unlocking is required before entering and leaving the room, which is not only a troublesome task, but it is not locked unless the locking operation is performed, so there is no time to forget or lock the lock. There may be cases where the person who first entered the room and the person who tries to enter the room later are rude to each other.

Further, when the locking lock or the lock release piece of the dead bolt is a rotary type, the amount of rotation during the unlocking work is insufficient, which causes a malfunction that locks the door when the door is closed after leaving the room. It often happens that it becomes impossible to enter the room.

A conventional automatic door locking device for an office is composed of an in-room occupant detector, a timer, and an electric lock. The electric lock is locked after a predetermined time has elapsed. Therefore, such a conventional automatic locking device cannot be applied for locking only while the user is in the private room.

The present invention has been made in view of the above points, and is automatically locked when entering and closing a door, and the lock operation for unlocking is performed only once when leaving the room. The purpose is to provide a door locking device that can prevent rude situations such as forgetting to lock the door.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the door automatic locking device according to the present invention is applied to a door having a latch that is retracted from the front of the lock of the door by rotating the door knob or the lever handle of the private room. , A contact detector installed on the door, a door closing detector, an in-room detector, a solenoid, and a controller.The contact detector is a knob or lever inside the door. It is for detecting whether or not a human hand comes into contact with the handle, the closing door detector is for detecting whether the door is closed, and the occupant detector is The presence / absence of a person in the private room is detected, and the control unit detects the closing detection signal from the closing door detector and the in-room detector based on the contact detection signal input from the contact detector. Check if there is an occupant detection signal input in When the content stored in the lock state storage means is unlocked, the solenoid is energized and at the same time the lock state is stored in the lock state storage means, and the contact detection signal is input from the contact detector. The presence / absence of the door closing detection signal from the door closing detector and the occupant detection signal from the occupant detection sensor are checked, and both are input, and the stored contents of the lock state storage means are locked. In this case, the energization of the solenoid is stopped, and at the same time, the unlocked state is stored in the lock state storage means.The latch is provided with a pin engaging portion, and the solenoid is energized. At this time, the lock pin connected to the plunger is inserted into the pin engaging part of the latch fitted in the strike, and the lock pin is disengaged from the pin engaging part when the energization is stopped. Ah , It is characterized in that.

Further, there is provided a door automatic locking device having a latch that is retracted from the front of the lock of the door when the knob or lever handle of the door of the private room is rotated, and a door closing detector installed on each door frame side. , A occupant detector, a solenoid, and a control circuit, and a permanent magnet. The door closing detector detects whether or not the door is closed. The person detector is for detecting the presence or absence of a person in the private room, and the control circuit is configured to detect both the door closing detection signal from the door closing detector and the person detection signal from the room occupant detector. When the solenoid is energized, the solenoid is instantly energized, and the latch is provided with a pin engaging portion.When the solenoid is energized, the lock pin connected to the plunger is fitted to the strike. Before being The plunger of the solenoid is to be inserted into the pin engaging portion of the latch.The plunger of the solenoid has a lock release pin protruding into the room, and when it is moved in a direction away from the latch via the lock release pin, It is characterized by being adsorbed and held by the permanent magnet.

Further, when applied to the door of a private room having an imposition lock, the automatic locking device includes a door-closing detector installed on the door frame side, an occupant detector, and a control circuit. , A lock pin, a solenoid, and a shutter.The door closing detector detects whether or not the door is closed, and the occupant detector detects the presence of an occupant in the private room. The presence / absence is detected, and the control circuit energizes the solenoid when both the closing detection signal from the closing detector and the occupant detection signal from the occupant detector are input. Yes, the lock pin is provided in the door frame and is biased in a direction to always project toward the door surface in the closed position, and the shutter is coupled to the plunger of the solenoid to lock the lock. The position to prevent the pin from protruding It is movably held in place and is moved through a plunger when the solenoid is energized to cause the lock pin to project from the door frame. A pin insertion hole for inserting the protruding lock pin is provided.

[0010]

[Action]

 In the locking device according to claim 1, when the door is closed by pulling the knob after entering the room, the door closing detector outputs a door closing detection signal and the person-in-room detector outputs a person-in-room detection signal. Since the control section stores the unlocking state in the lock state storage means, the solenoid is energized. As a result, the lock pin engages with the pin engaging portion of the latch and is automatically locked. Further, the lock state storage means of the control unit stores the state of being locked. Therefore, if you try to rotate the knob to leave the room, the solenoid pin will be de-energized and the lock pin will disengage from the pin engagement part of the latch due to the establishment of the three conditions of closing the door, staying in the room, and locking. You can then open the door and leave the room.

In the automatic locking device according to the second aspect, when the door is closed after entering the room, both the door closing detector and the in-room occupant detector output a closing door detection signal and an in-room occupant detection signal. Energizes the solenoid. As a result, the plunger attracted to the permanent magnet falls, the lock pin engages with the pin engaging portion of the latch, and is automatically locked. When leaving the room, when the lock release pin is moved in the specified direction to return the plunger, the lock pin is released from the latch, so the door can be opened by turning the knob to open the door.

Further, in the automatic locking device according to the third aspect, when the door is closed after entering the room, the control circuit similarly energizes the solenoid based on the door closing detection signal and the occupant detection signal. As a result, the shutter is moved from the closed position to the open position, and the biased lock pin projects from the door frame and fits into the pin insertion hole formed in the front of the door to automatically lock it. To be done. When leaving the room, if the lock release pin connected to the lock pin is moved in a predetermined direction, the lock pin returns to the closed position and closes the lock pin to the unlocked position.

[0013]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. The embodiment shown in FIGS. 1 to 5 is one in which a locking device is provided on the door side having a latch that appears in and out in conjunction with the handle of the door. FIG. 1 is a perspective view of the front of the door, and FIG. FIG. 3 is a block diagram showing an example of the configuration of the control system, FIG. 4 is an equivalent circuit diagram, and FIG. 5 is a flow chart for explaining the operation.

In this embodiment, the latch 1 of the door D is always urged by the spring 2 in the direction in which the latch 1 is projected, and the latch 1 is retained regardless of whether the indoor knob 3 or the outdoor knob 4 is rotated. The door D can be opened and closed by immersing it in the front of the door D.

A pin engagement portion 5 is formed on the lower surface of the latch 1 inside the door, and a solenoid 6 is provided below the pin engagement portion 5 of the latch in the projecting state, and a plunger or plunger of the solenoid is provided. The lock pin 7 connected to the pin is opposed to the pin engaging portion 5. When the solenoid 6 is energized, the lock pin 7 is engaged with the pin engaging portion 5 of the latch 1.

A CPU board 9 constituting a control system is provided in the lock box 8 attached to the door D, and the door closing detector 10, the occupant detector 11 and the contact detection are provided on the CPU board. The device 12, the lock indicator 13, the drive circuit 14, and the power supply 15 are connected.

The door closing detector 10 includes a reed switch 10a provided on the front of the door D and a permanent magnet 10b installed on the strike 17 side of the door frame DF. However, the closed door detector can be of any other type and structure that can detect that the door is closed. Further, the occupant detector 11 is for detecting the presence or absence of a person who has entered the room by opening and closing this door, and uses a transmission or reflection type red line sensor, an optical sensor, a floor load sensor, etc. be able to. The contact detector 12 detects that a person's hand has come into contact with the indoor side knob 3 of the door. When the indoor side knob 3 is gripped, for example, a static electricity sensor for detecting a change in electrostatic capacitance of the knob is detected. A sensor, a heat sensitive sensor, a pressure sensitive sensor or the like can be used. When the solenoid 6 is turned on and the lock pin 7 is engaged with the pin engaging portion 5 of the latch 1, the lock indicator 13 indicates that state on the outdoor side surface and / or the indoor side surface of the door D, for example, It is displayed visually with an LED or the like.

The drive circuit 14 receives a control signal from a CPU (not shown) mounted on the CPU board and applies a current to the coil of the solenoid 6. If a power-saving solenoid is used to lock the door, a battery can be used as the drive power supply. However, if the locking operation is not performed due to the exhaustion of the battery, an unexpected situation may occur.Therefore, in order to prevent this, a known battery dead notice device 16 that gives a battery dead notice is added to the power circuit. It is connected.

Based on the above configuration, the CPU operates as shown in FIG. That is, whether or not the indoor side knob 3 is contacted by the signal from the contact detector 12 is constantly monitored (S1). If the contact is made, the output state of the door closing detector 10 is continuously checked and the door is closed. It is checked whether or not there is any (S2). If the door is not closed, the process returns to step S1. When the door is closed, it is detected from the signal from the occupant detector 11 whether there is a person in the room (S3). Even if the door is closed, if the occupant detector does not detect the presence of a person, the process returns to step S1.

When the occupant detector 11 detects the occupant, it is checked whether the lock flag formed in the CPU is "1" or "0" (S4). That is, when a human hand comes into contact with the indoor knob 3 of the door D, it is determined whether the user is in the room in the locked state or has just entered the room. Then, when the lock flag is "0" (N in S4), it is determined that the door has been opened and the room has been entered, and the solenoid 6 is energized via the drive circuit 14 to raise the plunger. , The lock pin 7 is engaged with the pin engaging portion 5 of the latch 1 of the closed door (S5). As a result, this door is locked. Therefore, even if the operator grips the outdoor side knob 4 and tries to rotate it in a predetermined direction, it cannot rotate. Further, the lock flag is set to "1" (S6).

The CPU causes the lock indicator 13 attached to the lock box 8 to emit light to display that the door D is locked on the indoor and outdoor surfaces (S7). When the lock display is performed, the process returns to step S1 to monitor again whether or not the indoor side knob 3 is touched. When the user finishes the purpose indoors and leaves the room, the knob 3 is touched again. Now, the door is closed and the person is in the room, and the lock flag is set in step S4. Since it is "1", the solenoid 6 is turned off (S8), the lock flag is set to "0" (S9), the lock display is turned off (S10), and the process returns to step S1 and the next person enters the room. Then, it is monitored whether or not the indoor knob 3 is touched.

As described above, in this embodiment, when the user enters the private room and pulls or pushes the indoor side knob 3 of the door D to close the door, the solenoid 6 is energized and is connected to the plunger or the plunger. The lock pin 7 engages with the latch 1 and is automatically locked. Therefore, forgetting to lock is prevented. When the indoor knob 3 is turned to open the door D when leaving the room, the solenoid 6 is de-energized and unlocked. Therefore, turn the knob to open the door and exit the room. can do.

6 to 8 show an embodiment in which the locking device is attached to the door frame DF side. 6 is a sectional view in an unlocked state, FIG. 7 is a sectional view in a locked state, and FIG. 8 is a front view in a closed state. In this embodiment, the ratchet 1 is provided so as to be retractable from the front of the door D by the rotation of the indoor knob 3 (or the lever handle), and is always biased by the spring 2 in the direction of protruding. , The same as the conventional empty lock. In the present embodiment, the pin engaging portion 5 is formed at the tip portion (latch head) of the latch 1 that enters the strike 17 side, and the solenoid 6 is provided in the door frame DF and is made of a magnetic material. The plunger 7a is attached to a position where it engages with the pin engaging portion 5 of the latch 1 that has entered the recess of the strike 17. A lock pin 7b that can be inserted into the pin engaging portion 5 is formed at the lower end of the plunger 7a. Further, a permanent magnet 18 is attached above the solenoid 6. When the solenoid 6 is not energized, the upper end of the plunger 7a is attracted to the permanent magnet 18 and is held in the raised position, allowing the latch 1 to freely retract through the door knob or lever handle. ing. A lock release pin 20 inserted into a vertically long hole 19 provided on the indoor side is connected to the plunger, and the lock release pin 20 is moved upward by hand, so that the lock pin 7b can be latched at the tip end. The engagement with the pin engagement portion 5 can be released. On the inner surface of the door frame DF, it is desirable to write an arrow A indicating the moving direction of the lock release pin when unlocking the lock.

Further, in the case of the present embodiment, the CPU board 9 is attached to the door frame DF side, and the occupant detector 11, the reed switch 10a of the door closing detector 10 and the lock indicator 13 are also the door frame DF. Mounted on the side. A permanent magnet 10b is attached to the door lock box 8 at a position corresponding to the reed switch 10a of the door closing detector 10.

With the above configuration, when the lock release pin 20 is moved upward, the upper end portion of the plunger 7 a is attracted to the permanent magnet 18 and the unlocked state is maintained. Then, at that time, the doors can be opened and closed by rotating the knobs 3 and 4 from both inside and outside.

On the other hand, when the door is closed by entering the room, the closed door detector 10 detects the closing of the door D, and when the in-room detector 11 detects the in-room state, the CPU Since the solenoid 6 is energized, the plunger 7a attracted to the permanent magnet 18 overcomes the attraction force of the permanent magnet 18 and is dropped, and the lock pin 7b at the lower end thereof is locked by the pin engaging portion 5 of the latch 1. Engage with. This allows the door to be locked automatically by a person who has just closed it. Therefore, the state of forgetting to lock does not occur. Even if the outdoor side knob 4 is rotated to open the door, the door cannot be opened because the latch 1 cannot move to the unlocked position.

However, when leaving the room, when the lock release pin 20 near the knob is moved to the lock release position along the arrow A, the lock pin 7b disengages from the pin engaging portion 5 of the latch 1 and moves upward. The permanent magnet 18 is attracted to and retained by the permanent magnet 18. Therefore, after that, as usual, the indoor side knob 3 can be turned to open the door and leave the room.

When the door is closed again after leaving the room, the closing door detector 10 outputs a closing door detection signal, but the occupant detector 11 does not output the occupant detection signal. It is not locked because it is not charged. In this embodiment, when the solenoid 6 is locked, it is locked only by instantaneously energizing the solenoid 6, and the locked state is maintained, so that the power saving effect can be obtained.

The embodiment shown in FIGS. 9 to 11 is applied to a door using an idle lock such as a roller latch or a batch, instead of a hitch type or a slide bolt etc. An example of applying the automatic locking device of the present invention is shown below. FIG. 9 is a perspective view showing the door side and a sectional view showing the door frame side. 10 is a sectional view in a locked state, and FIG. 11 is a front view in a closed state.

As shown in FIG. 9, a door 1 is provided with a batch 1A and a knob 3A as in the conventional case, and a permanent magnet 10b, which is one of the constituent elements of the door closing detector 10, is provided on the front 8a side. A pin insertion hole 21 is provided.

On the side of the door frame DF, the reed switch 10a, which is another component of the door closing detector, is provided on the rear surface of the strike 17 with which the batch 1A is fitted, at a position corresponding to the permanent magnet 10b. A lock pin 23, which is constantly urged in a protruding direction by a spring 22, is provided at a position corresponding to the pin insertion hole 21 of the front 8a so as to be movable back and forth, and a hole 24 for allowing the lock pin 23 to project and retract is provided in front of the strike 17. It is provided. A shutter 25 for opening and closing the hole 24 is provided inside the strike 17, and the shutter 25 is connected to the plunger 7 of the solenoid 6. The solenoid 6 maintains the shutter 25 at the hole closing position in the non-energized state, but moves the shutter 2 to the hole opening position when energized. As the shutter 25 moves to the hole opening position, the lock pin 23 immediately projects from the hole 24 due to the elastic force of the spring 22. Therefore, when the door D is closed, the lock pin 23 enters the pin insertion hole 21 of the front 8a of the door, and the door is locked. The energization condition of the solenoid at this time is also when the door closing detection and the occupant detection satisfy the AND condition. Also in this embodiment, since the lock pin 23 is biased in the locking direction by the spring 22 and stopped by the shutter 25, the solenoid 6 is energized for a moment to open the shutter 25. Is maintained, there is an advantage that power consumption is very low.

Further, also in this embodiment, as in the case of the previous embodiment, the lock release pin 20 coupled to the lock pin 23 is passed through the horizontally elongated hole 19a formed on the inner surface of the door frame DF. In order to unlock when the person who has entered the room and has left the room for the purpose of ejecting, the lock release pin 20 is moved in the direction of arrow A, which is written near the lock release pin 20 and indicates the moving direction at the time of unlocking. When moved, the lock pin 23 retracts from the pin insertion hole 21 and the strike hole 24 of the front 8a of the door D. The shutter 25 is urged in the hole closing direction by a solenoid plunger or a return spring (not shown) provided in the shutter itself, so that when the lock release pin 20 is moved to the lock release position, the shutter 25 is instantly released. Since the shutter 25 returns to the closed position, the lock pin 23 is held in the unlocked position.

[0033]

[Effect of device]

 As described above, according to the present invention, when the door is closed after entering the private room, the latch is automatically locked and the door cannot be opened from the outside of the room. This allows you to use private rooms without being rude to each other. Further, according to the invention of claim 1, all the constituent elements of the locking device can be installed on the door side, and there is no problem of complicated defeat, so only the mounting of the lock block is required, and therefore the mounting is easy. Is. Also, when leaving the room, the door can be unlocked and opened by simply turning the knob, as in the conventional case.

Further, according to the second aspect of the invention, all the constituent elements of the locking device can be mounted only on the door frame side, and in this case also, the mounting construction can be simplified. Then, since it is only necessary to momentarily energize the solenoid for locking, a power saving effect can be obtained.

Further, according to the third aspect of the present invention, the automatic locking device can be attached to the door using the internal locking lock with a simple structure, and the lock pin is projected by the movement of the shutter. As a result, the power saving effect can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a door according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the locked state of the same.

FIG. 3 is a block diagram showing an example of a configuration of a control system.

FIG. 4 is an equivalent circuit diagram of a control system.

FIG. 5 is a flowchart illustrating the operation of the first embodiment.

FIG. 6 is a sectional view of the unlocked state of the second embodiment of the present invention.

FIG. 7 is a sectional view showing the locked state of the same.

FIG. 8 is a front view of the interior side of the main part of the door in the same locked state.

FIG. 9 is a perspective view showing a part of a third embodiment of the present invention in a sectional view.

FIG. 10 is a sectional view of the same in a locked state.

FIG. 11 is a front view of the interior of the main part in the locked state.

[Explanation of symbols]

 D Door DF Door frame 1,1A Latch 3,3A Indoor side knob 5 Pin engagement part 6 Solenoid 7 Plunger 7b Lock pin 8 Lock box 10,10a, 10b Door closed detector 11 In-room detector 12 Touch sensor

Claims (3)

[Scope of utility model registration request] (1) An automatic door locking device having a latch that is retracted from the front of the lock of the door by the rotation of a knob or lever handle of the door of the private room, and (b) the automatic locking device comprises: It has a contact detector installed on the door, a door closing detector, an in-room detector, a solenoid, and a control unit. (C) The contact detector is a knob or lever handle on the indoor side of the door. And (d) the door closing detector detects whether or not the door is closed, and (e) the occupant detection. The container is for detecting the presence or absence of a person in the private room, and (f) the control unit is based on the input of the contact detection signal from the contact detector, and the closing detection signal from the closing detector and Check the presence / absence of the occupant detection signal from the occupant detector, and When there is an input and the stored content of the lock state storage means is unlocked, the solenoid is energized and at the same time the locked state is stored in the lock state storage means, and the contact detection signal from the contact detector is sent. Based on the input, it is checked whether or not the door closing detection signal from the door closing detector and the occupant detection signal from the occupant detector are input, both are input, and the stored contents of the lock state storage means are locked. In the case of (4), at the same time when the energization of the solenoid is stopped, the unlocked state is stored in the lock state storage means. (G) The latch is provided with a pin engaging portion, ) When the solenoid is energized, the lock pin coupled to the plunger is inserted into the pin engaging portion of the latch fitted in the strike, and when the energization is stopped, the lock pin is inserted into the pin. From the engaging part Is intended to de, automatic locking device of the door, characterized in that. 2. An automatic locking device for a door, comprising: (a) a latch that is retracted from the front of the lock of the door by rotating a knob or a lever handle of the private room door; It has a door-closing detector installed on the frame side, an in-room detector, a solenoid, and a control circuit, and also has a permanent magnet. (C) Is the door closed in the door-closing detector? (D) The occupant detector is for detecting the presence or absence of an occupant in the private room, and (e) the control circuit is for closing the door from the door closing detector. When both the detection signal and the occupant detection signal from the occupant detector are input, the solenoid is momentarily energized. (F) The latch is provided with a pin engaging portion, G) When the solenoid is energized, its solenoid A lock pin coupled to a jar is inserted into a pin engaging portion of the latch fitted in a strike; (h) the plunger of the solenoid has a lock release pin protruding into the room; An automatic door locking device, which is attracted and held by the permanent magnet when moved in a direction away from the latch via a release pin. 3. (a) An automatic locking device for a door of a private room having an empty lock, wherein (b) the automatic locking device is a door-closing detector installed on the door frame side, and an occupant detection device. And a control circuit, a lock pin, a solenoid, and a shutter, and (c) the door closing detector detects whether or not the door is closed. The person detector is for detecting the presence / absence of an occupant in the private room, and (e) the control circuit is a door-closing detection signal from the door-closing detector and an occupant detection signal from the person-in-room detector. When both are input, the solenoid is energized. (F) The lock pin is provided in the door frame and is urged in a direction that always projects toward the door surface at the closed position. Yes, (g) The shutter is connected to the solenoid plunger. , Is movably held at a position that prevents the lock pin from projecting, and is moved via a plunger when the solenoid is energized to project the lock pin from the door frame. An automatic door locking device, characterized in that a pin insertion hole into which the lock pin projected from the door frame is inserted is provided at the front of the door.