JPS6120929Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is a crime prevention device that allows occupants of a building to store and install keys unattended to streamline and save labor without having to hand over the keys to each room to the manager. This invention relates to a key storage device.

In recent years, in order to streamline management operations and save labor, buildings have been reducing the number of custodians and security guards, or leaving buildings unmanned and conducting remote inspections using telephone lines. As a result, the keys for each resident are to be managed by the resident himself/herself, but it is undesirable for crime prevention to have each resident have their own key. Another problem was that by restricting the number of people with keys, those who worked overtime were reluctant to take their keys home because they had to return to work early the next day.

This idea was developed in consideration of the above-mentioned points, and relates to a security key storage device installed in the entrance hall of a building, etc., in which the last person to leave stores his/her own key in the designated key storage section. When the door is locked and a key is needed to enter the room, only a person who knows how to release the key can release the lock and take out the key. This invention will be explained below with reference to the drawings.

FIG. 1 shows an example of a key used in the security key storage device of this invention, where 1 indicates the entire key, 2 indicates the key portion, and 3 indicates the grip portion. Permanent magnets 4 are embedded in the key part 2 with north and south poles arranged in a predetermined arrangement, forming a so-called electronic lock.
The grip part 3 is made of a non-magnetic material such as synthetic resin, into which the base of the key part 2 is inserted and fixed, and is provided with a lock hole 5 into which a lock mechanism to be described later engages. A permanent magnet 6 is embedded inside, and a key number 7 is displayed on the end surface.

FIGS. 2 and 3 are a front view and a side view showing an embodiment of this invention. In these figures,
Reference numeral 11 denotes a housing, the upper interior of which is partitioned to form a large number of key storage sections 12. Reference numeral 13 denotes a key insertion slot formed on the front side of the key storage section 12. Reference numeral 14 designates the key numbers respectively displayed in the key storage portion 12, 15 the display lamp, and 16 the reed switch which is operated by the proximity of the permanent magnet 6 of the key 1. 17 is the housing 11
A magnetic card insertion slot 18 provided on the front side of the magnetic card slot 18 is a card reader that reads the memory code of the magnetic card inserted through the magnetic card slot 17.

Next, an outline of the operation of the above embodiment will be described.

When returning home, the last person to leave the room locks the door and uses the key number 1 that matches key number 7.
4 is displayed on the key insertion slot 13 of the key storage section 12
Insert into. When key 1 is inserted, key 1 is locked (details will be described later), and at the same time, reed switch 16 is opened to notify the computer of the management device (not shown) of the insertion of key 1. At the same time, the display lamp 15 lights up to indicate that key 1 is locked. The storage of key 1 is thus completed.

The first person to go to work the next morning inserts a magnetic card (not shown) in advance into the magnetic card insertion slot 17 of the housing 11. This magnetic card stores unique codes (numbers, characters, etc.) determined in advance for the key numbers 7 and 14. On the other hand, all the unique codes corresponding to the key numbers are stored in the computer of the management device, and when a magnetic card is inserted into the magnetic card insertion slot 17 of the housing 11, the unique code is output from the card reader 18. Then, this output is compared with a unique code stored in advance, and if they match, a lock release signal is issued to release the aforementioned lock. If there is a mismatch, the lock will not be released.

In this way, the key 1 is stored and taken out.

Next, details of the key storage section 12 will be explained with reference to FIG. 4.

FIG. 4 is a schematic cross-sectional view of one key storage portion 12, showing a state in which the key 1 is locked.
In this figure, 11a is a key placement plate that also serves as a partition, 11b is a rear end plate, 11c is a component mounting plate, 11
d is a front cover plate that also serves as a magnetic shield. A non-magnetic material is used for 11a to 11c, and a magnetic material such as an iron plate is used for 11d. Reference numeral 19 denotes an electromagnetic mechanism serving as a locking mechanism, to which the component mounting plate 11c is attached using countersunk screws 20. The component mounting plate 11c is fixed to the rear side plate 11b with screws 21. The electromagnetic mechanism 19 includes a coil 19a
A magnetic plunger 19 with a conical tip
b, and a spring 19c that constantly presses the plunger 19b downward.

Next, the action will be explained.

As the key 1 is inserted into the key insertion slot 13, the key part 2 first hits the conical part of the plunger 19b and pushes it up a little against the spring 19c, and then the grip part 3 pushes the plunger 19b further up as shown in FIG. When the plunger 19b is pushed in to the position shown in the figure, the tip of the plunger 19b engages with the lock hole 5 provided in the grip portion 3, and the key 1 is locked and cannot be pulled out or pushed in from now on. Also, hold the grip part 3 on a bench, etc.
Even if you try to pull it out by pinching it, the grip part 3 of key 1
Since it is supported by the key placement plate 11, it cannot be pulled out because the key placement plate 11a gets in the way. At this time, the permanent magnet 6 of the grip part 3 is simultaneously placed in a position corresponding to the reed switch 16, the reed switch 16 is closed, the indicator lamp 15 is lit, and the key 1 is inserted into the computer of the management device. Enter the hot information. In the unlikely event that the room key is not locked yet, turn on the indicator light 1.
This is notified by flashing 5 or by activating an alarm (not shown). This completes the storage of key 1.

Next, when taking out the key 1, the magnetic card insertion slot 17 shown in FIG.
When a magnetic card is inserted into the key 1, the coil 19a is energized only when the code unique to the key 1 stored in the magnetic card matches the code stored in the computer of the management device. This energization causes the plunger 19b to rise and lock the lock hole 5.
The engagement with is released. The release time is limited to 30 seconds, for example. Therefore, if the key 1 is pulled out while pushing the upper part of the grip part 3 of the key 1 with a finger within this time limit, the key 1 can be easily pulled out from the key storage part 12. In the unlikely event that 30 seconds have elapsed, the magnetic card can be removed and inserted into the magnetic card insertion slot 17 (FIG. 2) again.

Figure 5 shows another embodiment of this invention.
In this embodiment, the lock hole 5 of the key 1 is formed in the key part 2 not as a through hole but as a hole with a bottom, and the electromagnetic mechanism 19 is attached to the back side of the component mounting plate 11c. Furthermore, the tip of the plunger 19b is not conical but has an inclined surface.

Figure 5a shows the state in the middle of insertion, and if you push it a little further, the plunger 19 will be inserted as shown in Figure 5b.
The tip of b is engaged with the lock hole 5 and locked. FIG. 5c shows a state in which the electromagnetic mechanism 19 is energized, the plunger 19b is raised, and the lock is released.

In the above embodiment, a case has been described in which a magnetic card is used as a code input means for the lock release mechanism, but instead of using a magnetic card, as shown in FIG. Alternatively, the lock may be released by inputting a unique code for the key 1 to be used each time.

As detailed above, this idea allows keys to be inserted into multiple key storage compartments provided in the housing and locked and stored, eliminating the need to bring the keys home every day. can be managed. Since the presence or absence of the key can be determined from the outside, for example, just by looking at the person on the way to work, one can know that there is a first-come-first-served person, and congestion during work hours can be alleviated. In addition, the key is locked by inserting the plunger of the electromagnetic mechanism provided in the key storage part into the lock hole provided in the key holding part using spring force, so even when the key is locked for a long time, no power is consumed. do not have. In addition, since the key storage part is provided with a key mounting plate protruding from the front side so as to support the entire surface of the key grip, the key grip cannot be pulled out by pinching it with a bench or the like, which prevents theft. can be prevented. Furthermore, there are practical effects such as changing the key to be used can be easily handled by changing the memory of the computer.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a key used in the security key storage device of this invention, FIGS. 2 and 3 are front and side views showing an embodiment of this invention,
Fig. 4 is a schematic sectional view showing the details of the key storage section in the embodiment shown in Figs. 2 and 3, and Figs. be. In the figure, 1 is a key, 2 is a key part, 3 is a grip part, 5
is a lock hole, 7 is a key number, 11 is a housing, 12 is a key storage part, 13 is a key insertion slot, 14 is a key number, 17 is a magnetic card insertion slot, 18 is a card reader, 19 is an electromagnetic mechanism, 19a is The coil 19b is a plunger.

Claims (1)

[Scope of utility model registration request] A key storage device consisting of a key part and a gripping part made of a non-magnetic material, the gripping part having a locking hole for locking; a housing with a number of key storage parts and a key mounting plate on the front side; protrudes to support the entire surface of the gripping portion of the key; when the key is inserted into the key storage portion and the locking hole reaches a predetermined position, the locking hole is engaged with the locking hole by a spring force. Each of the key storage portions is provided with an electromagnetic mechanism comprising a plunger that stops and locks the key, and a coil that detaches the plunger from the lock hole by resisting the spring force when energized; A crime prevention device characterized by being provided with a lock release mechanism that energizes the coil of an electromagnetic mechanism corresponding to the code when a predetermined code of the storage unit is input, thereby making it possible to pull out the key in the key storage unit. Key storage device.