JPH0786291B2 - Module unit for key management box - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a key management box module unit suitable for managing a key for entering a tenant or the like in an intelligent building.

[Conventional technology]

In recent years, in intelligent buildings, a key management box has been adopted to centrally manage entry keys to tenants.

That is, a plurality of module units each having a space for storing an entry key inside and a front door that can be opened and closed on the front side are arranged as a key management box, and integrated into this key management box. It has a card reader. In such a key management box, the card reader reads the unique code number of the ID card and compares it with the code number given by the numeric keypad to automatically open the front door of the module unit corresponding to the set ID card. I'm trying to open it.

Generally, such a key management box is arranged at the entrance of an intelligent building and stores the entry key in the module unit, thereby eliminating the inconvenience of carrying the entry key one by one after leaving the room. In addition, if you issue multiple ID cards corresponding to the same module unit, only those who use the module unit will be able to distribute the ID card, and the entrance key stored in the module unit will be shared. It can contribute to the unmanned building by omitting the resident guards.

[Problems to be Solved by the Invention]

However, in the conventional key management box, a solenoid is used to open the front door of the module unit.

For this reason, there was a lot of noise when opening the front door, and power consumption was also great.

Also, the size and weight of the module unit was inevitable due to the restrictions on the shape and weight of the solenoid, which hindered the overall compactness of the key management box.

[Means for Solving the Problems]

The present invention has been proposed to solve such a problem, and includes a slide member that is slidable against the restoring force of the elastic member and that closes the front door at the first slide position, and an engaging recess. And the engaging projection is provided on the slide member to engage the first slide member.
Locking lever that locks in the sliding position of the locking lever, an elastic plate made of a conductive member that presses against the side of the locking lever, and a fixed contact portion that contacts the movable contact portion provided on the elastic plate via the elastic plate. Is supplied with a current from the first state to the second state, the elastic lever is elastically deformed, the locking lever is moved in a predetermined direction, and the engagement concave portion of the locking lever and the slide member are engaged with each other. A transition member that releases the engagement state with the fitting protrusion and moves the slide member to the second slide position side by the restoring force of the elastic member to open the front door is provided. Due to the elastic deformation of the elastic plate that accompanies the transition to the state, the movable contact portion is brought into contact with and separated from the fixed contact portion so that the supply of current to the transition member is interrupted, and the side portion of the engaging protrusion of the slide member is engaged. Touch the side of the stop lever in this direction It is by regulating the movement in the opposite direction, in which so as to hold the cut-off state of the electric current supplied to the transition member.

[Action]

Therefore, according to the present invention, when the transition member transitions from the first state to the second state by receiving the current supplied through the elastic plate, the locking lever moves in the predetermined direction while elastically deforming the elastic plate. By this movement of the locking lever, the engagement state between the engaging concave portion of the locking lever and the engaging protrusion of the slide member is released, and the slide member moves to the second slide position side by the restoring force of the elastic member. , The front door is opened.

On the other hand, due to the elastic deformation of the elastic plate, the movable contact portion is separated from and contacted with the fixed contact portion, and the current supply to the transition member is cut off (self-cutoff). This causes the transition member to recover from the second state to the first state. The cutoff state of the current supplied to the transition member is maintained by the side portion of the engagement protrusion of the slide member contacting the side portion of the locking lever and restricting the movement of the engagement lever.

〔Example〕

Hereinafter, the key management box module unit according to the present invention will be described in detail.

FIGS. 2A and 2B are a front view and a side view showing a key management box in which an embodiment of the module unit for the key management box is arranged.

In the figure, 1 is a key management box module unit according to the present invention (hereinafter simply referred to as module unit), 2 is a unique code number written in an ID card (magnetic card) (not shown) set from the outside. A card reader for reading 3 is a numeric keypad for inputting a code number (see FIG. 3), and 4-1 and 4-2 are collation between a unique code number read by the card reader 2 and a code number given by the numeric keypad 3. LED that displays the result (4th
(See the figure), 4-3 is an LED that indicates whether or not security is currently in the common area of the building in which this key management box is installed, and 4-4 is whether or not a security line is currently operating in the common area. LED that indicates whether or not, 4-5 is an LED that displays the operation status of this key management box, 5 is a buzzer, 6 is a speaker that informs various information by voice (word), and 7 is a liquid crystal display that displays various information Device (LCD), 8
Is an operation key (see FIG. 3) that can scroll the contents displayed on the LCD 7 and can give instructions to stop or execute the contents displayed, 9
Is a status display panel, and 10-1 and 10-2 are utility boxes.

In this embodiment, the module unit 1 includes a large door 11
A total of 20 are arranged in 5 rows and 4 rows. Each of these module units 1-11 to 1-45 is assigned to each tenant in the building. The large door 11 can be opened and closed with respect to the key management box main body 12 as needed. As shown in FIG. 5, the status display panel 9 has a status display panel surface 9-11 corresponding to the module units 1-11 to 1-45.
~ 9-45. Status display panel surface 9-11 to 9-
45 indicates LEDs 9-11a to 9-45a, 9-11b to 9-45b, 9-11c to
It has 9-45c, LED9-11a ~ 9-45a indicates whether or not the corresponding tenant is currently in a security state, and LED9-11b ~ 9-45b indicates the current security line in each tenant. Indicates whether or not it is working, LED9-11c
~ 9-45c displays whether or not cleaning work is currently being performed at each tenant. Utility box 10
-1 and 10-2 store a master key that enables each tenant to enter the room or a key bundle (a bundle of entry keys) that enables each tenant to enter the room.

In this embodiment, a shock sensor (not shown) is built in the key management box so that an emergency alarm can be issued when the key management box is destroyed. Also, a large door 11 for the key management box
A tamper switch (not shown) is provided in the key management box for the purpose of detecting prying open.

FIG. 6A is a side sectional view showing the module unit 1. That is, the module unit 1 before being incorporated into the large door 11 is shown, 1a is a module body, 1b is a front door provided on the front surface of the module body 1a so as to be openable and closable around a support shaft 1c, and 1d is a module body 1a. A slider provided therein so as to be slidable in directions A and B shown in the drawing,
1e shown by a two-dot chain line in the figure is a key holder that is removably placed on the upper surface of the slider 1d, 1f is a photo interrupter that detects an entry key (not shown) stored in the key holder 1e, and 1g is a front Tamper switch that detects the prying opening of the door 1b, 1h is the spindle 1a _{1 on} the bottom of the module body 1a
It is a locking lever that is swingable around. The slider 1d and front door 1b, a longitudinal groove 1d ₁ provided on both sides outside of the slider 1d, loosely fitted projections 1b ₁ provided on both sides inside of the front door 1b, coupling of both ( (Link) is planned.

FIG. 1 (a) is a bottom view of the module unit 1.
A guide groove 1a ₂ is formed in the center of the bottom surface of the module body 1a toward the front door 1b. That is, the bottom protrusion deviation 1d ₂ of the slider 1d is loosely fitted in the guide groove 1a ₂ .
This guides the sliding movement of the slider 1d. The bottom protruding piece 1d ₂ is further formed with an engaging protrusion 1d ₃ and a spring hooking protrusion 1d ₄ . In this state, the engagement between the engaging recesses 1h ₁ formed engaging protrusion 1d ₃ and the locking lever 1h slider 1d, slider 1d is engaged with the first slide position, front door 1b is closed It is supposed to be The engagement between the engagement protrusion 1d ₃ and the engagement recess 1h ₁ is urged by the pressure contact of the movable contact plate (elastic plate) 1j made of a conductive member to the locking lever 1h via the protruding portion 1h ₂ . . A protrusion 1a ₃ is provided on the bottom surface of the module body 1a, and a spring 1k is stretched between the protrusion 1a ₃ and the spring hooking protrusion 1d ₄ of the slider 1d. Further, a protrusion 1h ₃ is also formed on the protruding portion 1h ₂ of the locking lever 1h, and the shape memory alloy wire 1i is arranged around the protrusion 1h ₃ . One end of the shape memory alloy wire 1i has a movable contact plate 1j
The base is connected to the electrode pattern 1 m ₁ with the other end of the shape memory alloy wire 1i is connected to the electrode pattern 1 m ₂ adjacent to the electrode pattern 1 m _1. Further, in this state, the movable contact portion 1j ₁ of the movable contact plate 1j is in contact with the electrode pattern 1m ₃ serving as the fixed contact portion.

Next, a method of using the key management box thus configured and the operation of the module unit 1 will be described.

First, when going to work, the employee of the tenant
Set the card in the card reader 2 and use the numeric keypad 3
Enter more recitation number. Then, the unique code number of the ID card read by the card reader 2 and the recitation number input from the ten key 3 are collated.

If the verification result is correct, the LED 4-1 lights up, the buzzer 5 sounds, and the ID set in the card reader 2
The module unit 1 corresponding to the card is selected, that is, the module unit 1-11 assigned to the tenant to which the employee belongs is selected, and the front door 1b of the module unit 1-11 is automatically opened. If the verification result is incorrect, the front door 1b of the module unit 1-11
Does not open, LED4-2 lights up and informs that.

The front door 1b of the module unit 1-11 operates as follows and automatically opens.

That is, if the verification result of the unique code number and the recitation number is correct, the electrode pattern of the module unit 1-11 1 m ₃
→ Movable contact 1j ₁ → Electrode pattern 1m ₁ → Shape memory alloy wire 1i
→ Current flows in the path of 1 m ₂ of electrode pattern. As a result, the shape memory alloy wire 1i transitions from the expanded state (first state) shown in the figure to the contracted state (second state) due to its self-heating. The transition of the shape memory alloy wire 1i from the first state to the second state causes the locking lever 1h to move to the support shaft 1a.
_The movable contact plate 1j moves in the direction of arrow C centering on ₁ while elastically deforming the movable contact plate 1j. This movement of the locking lever 1h disengages the engagement protrusion 1d ₃ of the slider 1d from the engagement recess 1h ₁ of the locking lever 1h, and the slider 1d slides in the direction of arrow A by the restoring force of the spring 1k. It will be done. At this time, the front door 1b that is in the linked state with the slider 1d is
Upon receiving the pressing force caused by the sliding movement of 1d, the support shaft 1c is opened around the center. When the state shown in FIG. 1 (b) is reached, the spring hooking protrusion 1d ₄ abuts the intermediate step portion 1a ₄ of the guide groove 1a ₁ , and the sliding movement of the slider 1d is restricted. That is, this position is the second slide position, and the open state of the front door 1b is regulated at this position as shown in FIG. 6 (b).

On the other hand, due to elastic deformation of the movable contact plate 1j, the movable contact portion 1j ₁
Is separated from and contacted with the electrode pattern 1m ₃ , and the power supply to the shape memory alloy wire 1i is cut off. That is, the power supply to the shape memory alloy 1i is cut off by itself. When the movable contact portion 1j ₁ is separated from the electrode pattern 1m ₃ , the side portion of the engaging protrusion 1d ₃ of the slider 1d contacts the side edge surface 1h ₄ of the locking lever 1h and is returned in the direction of arrow D. Since it is regulated, the separated / contacted state is maintained while the front door 1b is opened. As a result, the shape memory alloy wire 1i is restored from the contracted state (second state) to the extended state (first state), and prepares for the next operation in this state.

In this way, when the front door 1b of the module unit 1-11 is opened, the key holder 1e placed on the slider 1d is taken out and the entry key stored therein is taken out.
Then, the key holder 1e is returned and placed on the slider 1d, and the front door 1b is closed. When the front door 1b is closed, the slider 1d slides in the direction of arrow B by linking with the front door 1b, and the slider 1d
The engagement protrusion 1d _{3 of the above} and the engagement recess 1h ₁ of the locking lever 1h engage with each other. That is, since the movable contact plate 1j is in pressure contact with the locking lever 1h, the slider 1d moves against the arrow B against the restoring force of the spring 1k.
When slid in the direction, the engaging projection 1d ₃ is engaging recesses 1h ₁
Both of them are engaged at the timing facing each other. As a result, the module unit 1-11 returns to the initial state shown in FIGS. 1 (a) and 6 (a), and the front door 1b is locked in the closed state.

When the front door 1b is closed, the LED 9-11a which has been in the lighting state until then is turned off on the state display panel surface 9-11, and the release of the security state in the corresponding tenant is notified. LED9
By turning off the light of -11a, it is possible to visually confirm that there is an employee who is already at work, so that subsequent tenant employees (tenant employees who use module unit 1-11) can use the ID card to the card reader 2. Does not have to be set.

At the time of leaving, the tenant employee who leaves the last,
Open the front door 1b of the module unit 1-11 and return the entry key to the key holder 1e by the same operation procedure as above, and then open the front door 1b.
Close. At this time, on the status display panel surface 9-11,
Until then, the LED 9-11b, which is in the off state, lights up to notify the restoration of the crime prevention line at the corresponding tenant. At this time,
If the LED 9-11b does not light up, it is possible to know that the security line cannot be restored, that is, the user forgets to close the window when leaving the room. In addition, in the present embodiment, the fact that the security line or the crime prevention line is working is visually confirmed by turning on the LED, but it may be made visible by turning off the LED. By doing so, an intruder from the outside can be blinded.

Further, in the above-described embodiment, the case where the employee of the tenant enters and leaves the room has been described, but the key management box can be used even when the cleaning company enters and leaves the room. In this case, the cleaning company sets his / her ID card in the card reader 2 and inputs the password by the ten keys 3. Then, the unique code number of the ID card read by the card reader 2 and the recitation number input from the ten key 3 are collated. If the verification result is correct,
The LED 4-1 lights up and the buzzer 5 sounds, and after that, if the utility box 10-1 (10-2) is selected via the ten-key pad 3, the specified utility box 10-
The front door of 1 (10-2) opens automatically. As a result, the cleaning company can take out or return the master key or the key ring stored in the utility box 10-1 (10-2). At this time, if the module units 1-11 to 1-45 corresponding to the tenants to be cleaned or the tenants that have finished cleaning are designated through the ten-key pad 3, the status display panel surface 9-11 to 9-45 is used for LED 9-. 11c ~
By turning on or off the 9-45c, it is possible to notify the presence or absence of cleaning in the corresponding tenant.

In the present embodiment, the utility box 10-
Opening and closing of 1 and 10-2 shall be performed using a solenoid. Utility boxes 10-1 and 10-
Also for 2, the same mechanism as that of the module unit 1 may be adopted to open and close the front door.

A tamper switch may be housed in the door of the utility box so that it can respond to intrusion from the outside.

In addition, in this embodiment, the locking lever 1h can be operated from the rear side of the module unit 1, whereby the front door 1b of the module unit 1 can be manually opened.

〔The invention's effect〕

As is apparent from the above description, according to the present invention,
Compared with the conventional method using a solenoid, its structure can be simplified, low power consumption, low noise, small size, and light weight can be promoted, and the key management box as a whole can be made compact.

[Brief description of drawings]

FIGS. 1 (a) and 1 (b) are bottom views of an embodiment of a key management box module unit according to the present invention before and after operation, and FIGS. 2 (a) and 2 (b) are the key management. A front view and a side view showing a key management box in which a box module unit is arranged, FIG. 3 is an enlarged view of a numeric keypad section and an operation key section in this key management box, and FIG. 4 is a card reader in this key management box. FIG. 5 is an enlarged view of a state display panel portion of the key management box, and FIGS. 6A and 6B are side sectional views of the key management box module unit before and after operation. is there. 1 ... Module unit, 1a ... Module body, 1b
...... Front door, 1d ...... Slider, 1d ₃ ...... Engagement protrusion, 1h ......
Locking lever, 1h ₁ ... Engagement recess, 1j ... Moving contact plate, 1j ₁
...... Movable contact part, 1k ...... Spring, 1i ...... Shape memory alloy wire,
1m ₃ ...... Electrode pattern (fixed contact part).

Claims (1)

[Claims] Claim: What is claimed is: 1. A key management box module unit having a space for storing a key therein and having a front door that can be opened and closed on the front surface of the key management box module so that it can slide against the restoring force of an elastic member. A slide member that is provided and that closes the front door at the first slide position, and an engaging recess, and the engaging recess and the engaging protrusion provided on the slide member allow the slide member to move. To the first slide position, an elastic plate made of a conductive member in pressure contact with a side portion of the locking lever, and a movable contact portion provided on the elastic plate via the elastic plate. The electric current is supplied from the fixed contact portion that is in contact with the fixed contact portion, the first state is changed to the second state, the elastic lever is elastically deformed, and the locking lever is moved in a predetermined direction. Recess and the slide member A transition member that releases the engagement state with the engagement protrusion of the elastic member and moves the slide member to the second slide position side by the restoring force of the elastic member to open the front door. Due to the elastic deformation of the elastic plate associated with the transition from the first state to the second state, the movable contact portion is brought into contact with and separated from the fixed contact portion, and the current supply to the transition member is cut off, and the slide member is provided. The side portion of the engaging protrusion of the contact portion comes into contact with the side portion of the locking lever to restrict the movement of the locking lever in the direction opposite to the predetermined direction, thereby maintaining the cutoff state of the current supplied to the transition member. A module unit for a key management box, which is characterized by: