JPS6019396B2 - emergency door lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency door lock that is normally locked and can be operated with a bran lock in an emergency.

In the conventional emergency door lock, a case 14 is fixed to the emergency door 1 so as to cover the thumb turn 3 as shown in FIG. It is made up of a plate 15, so that in an emergency, a person can destroy the acrylic plate 15 and operate the thumb turn 3.

That is, in the conventional example shown in the figure, the thumb turn 3 cannot be operated without destroying the acrylic plate 15, thereby preventing the emergency door 1 from being opened by mischief etc. under normal conditions. In addition, in an emergency, a person trying to evacuate can easily operate the thumb turn 3 by destroying the acrylic plate 15 and open the emergency door. 1 could be opened. However, in such a conventional example, the acrylic plate 15 is destroyed and the thumb turn 3 is operated in an emergency, so the acrylic plate 15 is destroyed every time there is a slight event, although it is not an emergency. Since the acrylic board 15 may be destroyed or destroyed by mischief, etc., it is necessary to relatively frequently replace and install the destroyed acrylic board 15 with a new acrylic board 15, which takes time and effort to replace and install. Not only that, but each acrylic plate 15 costs about 1,000 yen, so the cost of replacing the acrylic plate 15 alone is expensive.

The present invention has been provided in view of the above-mentioned points, and by forming a protective member covering the thumb turn so that it can be opened and closed repeatedly, the cost and labor required for replacing expensive acrylic plates can be saved. In addition, the thumb turn can be prevented from being operated by mischief, etc., and the cover and case body that make up the protective member are enlarged so that batteries, buzzers, microswitches, etc. can be easily accommodated inside. The object of the present invention is to provide an emergency door lock that allows an administrator to easily lock the cylinder lock by operating the keys of the cylinder lock even if the cylinder lock is covered by the case body, etc., without having to open the cover each time. That is.

An embodiment of the present invention will be described in detail below with reference to the drawings.

1 in the figure is an emergency door to be reinstalled at the entrance/exit for emergency stairs, etc., and the lock body 17 attached to this emergency door 1 has a knob 1.
8, a latch 19 interlocked with this knob 18, and a cylinder lock 16 and a deadbolt 2 interlocked with this cylinder lock 16.
0 is provided, and the knob 18 is protruded from both sides of the emergency door 1, and both ends of the cylinder lock 16 are extended from both sides of the emergency door 1. Further, the lock body 17 is provided with a thumb turn 3, and this thumb turn 3 is connected to the emergency door 1.
By operating this thumb turn 3, the deadbolt 20 can be forcibly unlocked, in addition to unlocking the cylinder lock 16 by key operation. A case body 2 with a front opening 4 is fixed to the emergency door 1 through a thumb turn 3 and a cylinder lock 16. And the cylinder lock 16 is stored. Reference numeral 5 is an integrated cover, and butterfly plates 22, 22 are provided on the front green part of the case body 2 so as to cover the front opening of the case body 2.
The cover body 5 is soot-coated so that it can be opened and closed repeatedly, and the cover body 5 has a knob 23 for opening and closing operations, and a key for the cylinder lock 16 without opening the cover body 5 from outside the cover body 5. An operation hole 24 for operating a key is provided for the operation part, and a pair of operation rods 13, 13 for operating operation nails 9 of micro switches 8a, 8b, which will be described later, are provided protruding from the inner surface of the cover unit 5. ing. A window 25 is closed with a transparent plate, and the window 25 allows anyone to recognize the presence of the thumb turn 3 from outside the cover body 5.

A sub-case 11 is housed in the upper part of the case body 2 covered by the cover unit 5, and the sub-case 11 has a front plate 10 that hides its curved surface. Inside the sub-case 11, there are a pair of micro switches 8a. 8b, the buzzer 7 constituting the means for warning the opening of the emergency door 1, and the battery 6 have been redelivered, and the source of the turtle pond 6 is the micro switch 8a.
．． It is connected to the buzzer 7 via a parallel circuit on the NC contact side of 8b. By the way, the micro switch 8a. 8b
The front plate 10 has small holes 12, 1 corresponding to the operation buttons 9.
When the front surface of the case body 2 is covered with the cover body 5, the tips of the operation pins 13, 13 protruding from the inner surface of the cover body 5 are drilled into the small holes 12, 12, respectively. The operation buttons 9, 9 of the microswitches 8a, 8b are inserted.
It is designed to press. Thus, when the operation buttons 9, 9 are in the pressed state, the power supply from the battery 6 to the buzzer 7 is cut off, and the buzzer 7 does not sound. However, when the cover 5 is opened, the operation button 13 for the bare buttons 9 and 9 is displayed.
, 13 is removed, the micro switch 8
The NC contacts of a and 8b are closed, and power is supplied from the battery 6 to the buzzer 7. Therefore, the buzzer 7 sounds to notify that the cover 5 has been opened. do. The reason why two microswitches 8a and 8b are provided here is that an intruder or the like can open the cover 5 and insert a pin or the like into the small hole 12.12 and press the operating nails 9, 9 to turn on the buzzer Both hands are required to stop the buzzer, thereby making it impossible to operate the thumb turn 3 while stopping the buzzer 7.
Note that the front plate 10 is formed with a Q island hole 26 corresponding to the buzzer 7, and this front plate 10 is fixed to the sub-case 11 with screws 27. Further, the cover body 5 is held in a closed state with respect to the case body 2 by a magnetic catch 28. 5 to 7 show an enlarged front view, an enlarged side view, and an enlarged sectional view of the case body 2 and the cover body 5 of another embodiment of the present invention. In this embodiment, the window of the cover body 5 is The operating hole 24 is formed in the acrylic plate material of the section 25, and the rest is the same as the embodiment shown in FIGS. 2 to 4 described above.

In the present invention, as described above, the case body of the front entrance that covers the thumb turn is fixed to the emergency door, and the cover integrally covering the front entrance of this case body is hinged to the case body so that it can be opened and closed repeatedly. , there is no need to take the trouble and expense of replacing the protective cover means of the thumb turn with a new one for a mirror whose emergency door is opened by operating the thumb turn as in the past, and the same case body and cover can be used. It has the effect of being able to be used repeatedly over a long period of time and reducing the cost for thumb turn protection as a whole, and also has the battery, microswitch, and output island at least on the front plate. It is housed in the sub-case and re-installed inside the case body, and the micro switch operation lever is placed behind the small hole made at the key point of the front panel, and the operation lever protruding from the inner surface of the cover unit is used when the cover unit is closed. Since it is inserted into the small hole mentioned above and the operation button is pressed, the buzzer will sound as soon as the cover body is open and the thumb turn can be operated. This has the effect of preventing unauthorized operation of the thumb turn by an intruder or an intruder, and since these microswitches, buzzers, batteries, etc. are housed in a sub-case with a front panel, these circuit parts, etc. The operation hole makes it impossible to stop the buzzer by destroying it, improves the safety of the emergency door opening alarm operation caused by the buzzer, and exposes only the key operation part of the cylinder lock. Since the cover is integrally formed with the cover, even though the cylinder lock is covered with the thumb turn by the case body and the cover body, the key operation of the shilling lock can be performed without opening the cover integrally, Therefore, this has the effect that the administrator or the like can very easily open the emergency door by operating the cylinder lock key.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view of a subordinate example, Figs.
The figures are an enlarged front view of the case body with the cover integrated with the above and the front plate removed, Fig. 4 is an enlarged front view of the front plate of the above, Fig. 5 is an enlarged front view of another embodiment of the same, and Fig. 6. is an enlarged side view of the same as above, and Fig. 7 is an enlarged sectional view of A-A of the above, where 1 is an emergency door, 2 is a case body, 3 is a thumb turn, 4 is a front exit,
5 is a cover, 6 is a battery, 7 is a buzzer, 8a, 8b are micro switches, 9 is an operation nail, 10 is a front plate, 11 is a sub case, 12 is a small hole, 13 is an operation barrel, 24 is an operation hole be. Figure 1 Figure 3 Figure 2 Figure 2 Figure 4 Figure 6 Figure 5 Figure 7

Claims (1)

[Claims] 1. A case body with a front opening that covers the key operation part and thumb turn of the cylinder lock is fixed to the emergency door, and a cover body that covers the front opening of this case body is hinged to the case body so that it can be opened and closed repeatedly, and the battery and The microswitch and the sounding body are housed in a sub-case having at least a front plate, and the operation button of the microswitch is arranged at the back of the small hole provided at the important point of the front plate, and the cover is closed. An operation rod protruding from the inner surface of the body is inserted into the small hole to press the operation button when the cover body is closed, and an operation hole is formed in the cover body to expose only the key operation part of the cylinder lock. An emergency door lock featuring