JPH01219268A - Secret room key keeping box - Google Patents

Abstract

PURPOSE:To exactly prevent the occurrence of robbery by a method in which a secret room key consisting of a light receiver, an actuator to operate locking mechanism, and a control circuit is built in a keeping box, and the actuator is operated by a transmitting equipment to emit infrared rays. CONSTITUTION:A secret room key is made up of an infrared rays transmitter 1, a light receiver 2 attached to the inside of a keeping box, a locking mechanism 3 attached to doors 5 and 6, and a control circuit 4. The mechanism 3 is provided with a coil 10 and a plunger 12, and a sash 5a has an inner cylinder and a sash 6a has a recession 6b, which permits the plunger 12 to go in or out. In unlocking, infrared rays from the transmitter 1 are converted into electrical signals and checked as to whether they are normal marking code signals or not. The coil 10 is electrified to retract the plunger 12 for unlocking. The occurrence of robbery can thus exactly prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a so-called closed door lock for a storage, and particularly to a locked lock for a storage built into a storage such as a showcase. It is something.

(Conventional technology) In the case of locks for conventional storage cabinets such as showcases.

A cylinder lock, which is exposed to the outside or can be attached to the outside, is used to lock and unlock the door by inserting a mechanical key into the keyhole from the outside.

(Problem to be Solved by the Invention) For this reason, exhibits inside the storage such as a showcase can be easily pried open by unauthorized acts such as picking from the outside of the storage such as a showcase through the keyhole. It had drawbacks such as being vulnerable to theft.

(Purpose of the Invention) The present invention has been made to solve such problems, and instead of providing a locking/unlocking device on the outside of a storage such as a showcase, it is provided on the inside and the locking/unlocking device is locked and unlocked from the inside. The purpose of the present invention is to provide a lock for a storage room that reliably prevents theft.

(Means for Solving the Problems) In order to achieve the above object, the present invention comprises a signal generation circuit that generates a code signal, which is a lock/unlock signal, and a light emitting element that emits this signal as infrared light. A transmitter, a light receiving section that converts an infrared light signal from the transmitter into an electrical signal, an actuator that operates a locking mechanism that is installed inside a storage room having a door and locks and unlocks the door, and a light receiving section. It consists of a control circuit that determines whether the converted electrical signal is a regular code signal and outputs a lock/unlock signal to the actuator when it is a regular code signal, and the light receiving section, actuator, and control circuit are all stored. It is characterized by being built into the inside of the storage.

Ru.

Figures 1 to 5 show a first embodiment of the present invention, and in Figure 9, 1 is a signal generation circuit that generates a code signal that is a lock/unlock signal, and a light emitting element that emits this signal as infrared light. It is a transmitter consisting of Reference numeral 2 denotes a light receiving section installed inside the main body 19 of the storage 18 such as a showcase, which converts the infrared light signal from the transmitter into an electric signal. 3
The showcase 1 locks and unlocks the left door 5 and the right door 6, which are attached to the main body 19 of the showcase 18 so that they can be opened and closed left and right.
This is a locking mechanism that is an actuator built into the main body 19 of No. 8.

Next, the configuration of this locking mechanism will be described. 7 is a cylindrical yoke 8, a core 9 caulked to this yoke 8,
This solenoid consists of a coil 10 housed in this yoke trough, a lower yoke 11, and a plunger 12 which is a locking member. 13 is a mounting plate, showcase 1
8 from the inside of the main body 19 (as shown in the figure, the left m5
Attach the solenoid 7 to the satush 5a. Note that the lower yoke 11 and the mounting plate 13 can also be integrated.

A retaining ring 14 is attached to the plunger 12, and a compressed spring 15 is fitted between the retaining ring 14 and the yoke 11, so that the plunger 12 is always urged upward. A sash 5a is attached to the left door 5, and a cylindrical portion 5b of the sash 5a bears a plunger 12 so as to be slidable up and down. A locking plate 16 is inserted between the upper portion 5c of the sash 5a and the upper end of the cylindrical portion 5b. This locking plate 16 has a long hole 16 that normally locks with the groove 12a at the tip of the plunger 12.
a, and a spring 17 that always biases this locking plate 16 to the left side.
A receiving part 16b having one end in contact with the inside of the sash 5a and the other end of this spring 17, and a sash 6a on the right m6 which will be described later.
A contact portion 16c that contacts the pressing portion 6c is formed.

A satush 6a is attached to the right door 6.

This sash 6a is formed with the above-mentioned suppressing part 6c and a recessed part 6b which is a receiving part into which the tip of the plunger 12 is inserted, and the locking mechanism 3 is composed of nine or more. 4
is a control circuit that determines whether the electric signal is a regular code code signal (a code registered in advance) and outputs an unlocking signal to the lock mechanism 3 if the electric signal is a regular code code signal. B is a power source. The control circuit 4 and the power source B are installed in the lower part of the main body 19 of the showcase 18.

Next, as shown in FIG. 4, which explains the operation of the first embodiment of the present invention, the long hole 16a of the locking plate 16 and the a1 of the plunger 12 are
Since the locking plate 16 is always biased to the left, the locking plates 2a and 2a are locked to each other, and are not inserted into the recess 6b of the sash 6a of the right door 6. Next, when the right door 6 is completely closed in the right direction, the pressing part 6c of the sash 6a comes into contact with the abutting part 16c of the locking plate 16, and the locking plate 16 is moved by the spring 1.
7 to the right, the groove 12a of the plunger 12
is disengaged from the elongated hole 16a of the locking plate 16, and the plunger 12 is always urged downward by the spring 13.
The plunger 12 enters the recess 6b of the sash 6a of the right door 6, and the left door 5 and right door 6 are locked. Next, to unlock the left door 5 and the right door 6, operate the transmitter 1 from outside the showcase 18 and generate a code signal, which is a lock/unlock signal, from the signal generation circuit of the transmitter 1. One light emitting unit emits this code signal as infrared light. This infrared light signal is received, converted into an electrical signal by the light receiving section 2, and input to the control circuit 4. This control circuit 4 determines whether or not this electrical signal is a regular code signal that is a pre-registered code, and if it is a regular code code signal, outputs an unlocking signal and drives the locking mechanism 3. Energize solenoid 7.

Since the plunger 12 is retracted, the left door 5 and right door 6 can be opened. At this time, if the left door 5 and right door 6 are opened, the pressing part 6c of the sash 6a of the right door 6 will not press the contact part 16c of the locking plate 16, so the locking plate 16 will be pushed to the left by the spring 17. As a result, the groove 12a of the plunger 12 is locked with the elongated hole 14a of the locking plate 16.

Next, FIGS. 6 and 7 show a second embodiment of the present invention.
The figure is a sectional view corresponding to FIG. 4 of the first embodiment. Fourth
Parts that are the same as those in the figure are designated by the same numbers.

In the figure, 20 is a locking mechanism, and the configuration of this locking mechanism 20 will be described. Reference numeral 21 includes a cylindrical yoke 23 to which a core 22 is caulked, coils 24 and 25 housed in this yoke 23, a plunger 27 attached by caulking a non-magnetic shaft 26, and this cylindrical yoke 23. This is a push-pull solenoid consisting of a lower yoke 28 that also serves as a mounting plate that is caulked. This push-pull solenoid 21 is attached to the sash 5a of the left door 5 from inside the main body 19 of the case 18 using screws (not shown) using a lower yoke 28 that also serves as a mounting plate.The upper end of the plunger 27 is attached by caulking the tip of the non-magnetic shaft 26, and its lower end is attached to the shaft 26.
6, and is adapted to move up and down together with the shaft 26. The shaft 26 is formed with a large diameter part 26b, and below the large diameter part 26b, a locking member 29 made of brass or the like is brought into contact with the lower part 26c and the lower end is caulked.The shaft 26 and the locking member 29 are integrally formed. It is formed. A groove 29a is formed approximately in the center of this locking member 29, and a locking spring 30 is locked therein. A bush 31 on which this locking member 29 can slide is fixed between the lower yoke 28 and the lower part 5C of the sash 5a of the left door 5, and the sash 5b on the cylindrical part of the sash 5a.
is inserted into. A groove 31a into which the locking spring 30 is fitted is formed on the outer periphery of the bushing 31. The locking spring 30 is normally bent inward and is elastically fitted into the groove 29a of the locking member 29. The plunger 27 is normally prevented from moving. A recess 6b is formed in the lock 6a of the right door 6. A recess 6b is formed into which a lock 29 is inserted to lock the left door 5 and the right door 6. ) Next, the operation of the second embodiment of the present invention will be explained.

The transmitter 4 is operated from the outside of the showcase 18, and the signal generating circuit of the transmitter 1 generates a code code signal, which is a lock/unlock signal, and the nine light emitting elements transmit the code code signal as infrared light. This infrared light signal is received, converted into an electrical signal by the light receiving section, and input to the control circuit 4. This control circuit 4 determines whether this electric signal is a regular code code signal (a code registered in advance), and if it is a regular code code signal, outputs a locking signal and drives the locking mechanism 20. , the coil 24 of the push-pull solenoid 21 is energized to cause the plunger 27 to protrude. Therefore, the lock member 29 fits into the recess 6b of the sash 6a on the right m6, so the left door 5 and the right m6 are locked. At this time, the locking spring 30 is in elastic contact with the large diameter portion 26b of the shaft 26, so that the locking member 29 can be reliably locked without moving upward due to prying or vibration. Next, when unlocking, the transmitter 1 is operated from outside the showcase 18 in the same manner as when locking, and the control circuit 4 outputs an unlocking signal to drive the locking mechanism 20.

Since the coil 25 of the push-pull solenoid 21 is energized and the plunger 27 is retracted, the left door 5 and right door 6 can be unlocked. At this time, the locking spring 30 locks into the groove 29a of the locking member 29.

Plunger 27 holds this position.

Next, FIG. 8 shows a third embodiment of the present invention, and is a sectional view corresponding to FIG. 4 of the first embodiment. In the figure, 40 is a locking mechanism, and a pinion 42 is attached to a motor 41.
The rack 43a of the locking member 43 is driven by the pinion 42. The motor 41 is fixed to a mounting plate 44, and the mounting plate 44 is mounted to the sash 5a of the left door 5 from inside the main body 19 of the showcase 18 with screws (not shown) or the like. Note that the lock member 43 is attached to the upper part 43 of the rack 43a.
b is supported by this mounting plate 44, and the lower part 43c is supported by the cylindrical portion 5b of the sash 5a of the left door 5. Further, the sash 6a of the right door 6 is formed with a recessed portion 6b into which the lower portion 43c of the locking member 43 is inserted.

Next, the operation of the third embodiment of the present invention will be explained.

The transmitter 1 is operated from outside the showcase 18 to output a lock/unlock signal from the control circuit 4 to drive the lock mechanism 40, rotate the motor 41 in the forward and reverse directions, rotate the pinion 42 in the forward and reverse directions, and lock the locking member. The rack 43a of 43 is moved downward and upward to project the lower part 43C of the locking member 43 into the recess 6b of the sash 6a of the right door 6, thereby locking and unlocking the left door m5 and the right door 6. In addition, two bottles (not shown) are fixed to the passage of the locking member 43, and a micro switch (not shown) or the like is fixed to the mounting plate 44 corresponding to each bottle.
When this bottle comes into contact with the microswitch, the polarity of the motor 41 is switched by a relay built into the control circuit 4, and the motor 41 is rotated in the forward and reverse directions.

Next, FIG. 9 shows a fourth embodiment of the present invention, and is a sectional view corresponding to FIG. 4 of the first embodiment. In the figure, 50 is a locking mechanism, 51 is a motor attached to a mounting plate 52, a spur gear 54 is attached to a rotating shaft 53 of this motor 51, and a spur gear 55 meshes with this spur gear 54.
The upper part 55a is supported by the mounting plate 52, and the lower part 55a is supported by the mounting plate 52.
b is supported by a convex portion 56a of a bearing plate 56. A locking member 57 is inserted into the spur gear 55, and a pin 58 is disposed in the middle of the cylindrical portion 57a of the locking member 57.
is press-fitted, and a male screw 57b is provided in the lower part. This bottle 58 slides up and down in a groove 55c inside the spur gear 55. A female screw 56c is provided at the center of the bearing plate 56 and is screwed into the male screw 57b.

The cover 58 is attached to the left door 5 by being crimped by a crimped portion 56b of the bearing plate 56. Male screw 5 on right door 6
The flange 59, which has a recess 59a into which the tip of the flange 7b is inserted, is attached to the showcase 18 together with the lid 60.
It is fixed from the inside of the main body 19 with screws (not shown) or the like.

Next, the operation of the fourth embodiment of the present invention will be explained.

When the transmitter 1 is operated from outside the showcase 18 and the control circuit 4 outputs a locking signal to rotate the rotating shaft 53 of the motor 51 of the locking mechanism 50, the spur gear 54 rotates and meshes with it. The spur gear 55 that is located rotates. Then, the locking member 57 inside the spur gear 55 locks the pin 58 into the groove 55.
c is slid up and down, the male screw 57b of the locking member 57 is screwed together with the female screw 56c of the bearing plate 56, enters the recess 59a of the flange 59, and the left door m5 and the right door 6 are locked. When unlocking, operate the transmitter 1 from outside the showcase 18, output an unlock signal from the control circuit 4, and rotate the rotating shaft 53 of the motor 51 of the locking mechanism 50 in the opposite direction to that for locking. The lock can be unlocked by pressing the button. In this case, the polarity of the motor 51 must be reversed to lock and unlock, but the cylindrical portion 57a of the locking member 57
A shaft (not shown) with a diameter smaller than this outer diameter is connected to the upper part of the (not shown) can be easily performed.

Next, FIG. 40 shows a fifth embodiment of the present invention, which is a partially modified version of the fourth embodiment shown in FIG. Parts that are the same as those in FIG. 10 are designated by the same numbers. The flange 60 is ff1 on the right door 6.
61 is fixed from the inside of the main body 19 of the showcase 18 with screws (not shown) or the like. This flange 6
A nut 62, which is fitted into the groove 60b and held unrotatably, is pressed by a spring 63 into the groove 60b inside the recess 60a.

The operation of this fifth embodiment will be explained.

In the case of locking, the locking member 57 is the female screw 56 of the bearing plate 56.
It advances downward while being screwed into the nut 62 pressed by the spring 63. The locking member 57 and the nut 62 are locked more firmly than in the fourth embodiment to prevent theft.

(Effects of the Invention) Since the present invention has a locking mechanism installed inside the main body of a storage such as a showcase, it is possible to provide a lock for a storage that cannot be unlocked or destroyed from the outside. The storage can only be locked and unlocked by operating the transmitter from outside, and there is no other means of locking or unlocking other than a regular code signal, so the storage can't be unlocked or destroyed from the outside like in the past. We can provide a closed door lock.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a lock for a storage room according to an embodiment of the present invention, and Fig. 2 is a circuit diagram of a lock for a showcase, etc.
FIG. 3 is a partial front view of FIG. 2, and FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3. Fig. ff15 is an enlarged perspective view of the locking plate of the first embodiment of the present invention, Fig. 6 is a cross-sectional view of the second embodiment of the present invention and corresponds to Fig. 4 of the first embodiment, and Fig. 7 8 is an enlarged perspective view of a locking spring according to a second embodiment of the present invention, FIG. 8 is a sectional view corresponding to FIG. 4 of the first embodiment, and FIG. 9 is a sectional view corresponding to FIG. FIG. 4 is a cross-sectional view of the fourth embodiment of the invention and corresponds to FIG. 4 of the first embodiment. FIG. 10 shows a fifth embodiment of the present invention, which is a partially modified version of the fourth embodiment shown in FIG. 1... Transmitter, 2... Light receiving section, 3. 20.
40. 50... Lock mechanism, 4... Control circuit, 6
b, 59a...Reception part, 7...Solenoid, 12.
29,43.57...Lock member, 18...Showcase, 19...Main body. 21...Push-pull solenoid, 41.51...
Motor, 42...pinion, 54.55...spur tooth table. 62...Natsuto. Patent applicant Nishin Co., Ltd. 7 Figure 2 Figure 32 j14 Figure 1ζC Figure 6 go E Yo, b

Claims (4)

[Claims] (1) A transmitter consisting of a signal generation circuit that generates a code signal that is a lock/unlock signal, a light emitting element that emits this signal as infrared light, and converts the infrared light signal from this transmitter into an electrical signal. an actuator that operates a locking mechanism installed inside a storage cabinet having a door to lock and unlock the door; , and a control circuit that outputs a lock/unlock signal to the actuator when a regular code signal is received, and the light receiving section, the actuator, and the control circuit are all incorporated inside the storage. The locked room in the storage room. (2) The closed door lock for a storage cabinet according to claim 1, wherein the actuator is a solenoid. (3) The locked room lock for a storage cabinet according to claim 1, wherein the actuator comprises a motor, a rack, and a pinion. (4) The locked room lock for a storage cabinet according to claim 1, wherein the actuator is a motor, and the locking mechanism is constituted by a locking member having a screw driven by the motor. (5) The actuator is a motor, and the lock mechanism includes a lock member having a screw driven by the motor, and a nut screwed into the lock portion having the screw. The locked door of the storage room.