JPH02236374A - Automatic locking device for locker - Google Patents

Abstract

PURPOSE:To improve economy by providing a locking plate and a pair of upper and lower locking rods interlocked with an external operation member, fitting the rocking rods with a locking rod engagement member and providing an unlocking prevention member on the engagement member in such a way as to be freely detachable. CONSTITUTION:When a master key is inserted in a cylinder 4 and turned, a cylinder lever 4a is turned and a joint plate 19 is thereby moved against a spring force. Then, the plate 19 while pressing and holding the switch lever 26 of a micro switch 25, causes the continuity of a locking signal mode and causes the shift of an unlocking prevention member 32 against a spring force, thereby releasing the engagement condition of a locking rod engagement member 28. Thereafter, when an external operation member 5 is turned, a locking plate 12 is turned against a spring force and a door 1 is pulled. Concurrently a pair of locking rods 13 and 14 are also shifted and pulled from the door 1, thereby giving an unlocked condition. Furthermore, when the door 1 is closed, the engagement condition of the locking rod 13 is released, and both of the locking rods 13 and 14, and the locking plate 12 come to project from the door 1 due to a spring force, thereby ensuring a locked condition.

Description

[Detailed description of the invention] a. Industrial Application Field The present invention enables the door of a locker to be automatically locked at the same time as the door is closed. When unlocking, the lock is released by an electrical signal generated by setting an unlock number using a numeric keypad, and then the external operating member is released. It relates to an automatic locking device that can be unlocked by simply turning the lock, and more specifically to its emergency unlocking device. mouth. Locking devices for lockers that have a system for unlocking conventional technical locks using electrical signals can be used to emergencyally unlock a locked locker using a master key in case of inspecting the contents, forgetting the unlocking number, etc. There is a need to. Conventionally, a system that unlocks the door in an emergency is a mechanism often seen in rental lockers. (Unexamined Japanese Patent Publication No. 1983-
(Refer to Publication No. 186394) In conventional lockers, in order to lock the door with a three-way hook, the rotation of the lock operates a horizontal bar and a pair of upper and lower locking rods. (See Japanese Unexamined Patent Publication No. 59-68484. C. Problems to be Solved by the Invention However, in the conventional locking device described above, even if a method of automatically closing the door is adopted, the lock cannot be locked. Normally, this is done with a separate lock, and the locking rod, latch rod, and locking device are separate devices.Also, in the method of unlocking the lock with an electrical signal, it is driven to lock. However, when the door is closed, the door is temporarily locked with a latch rod, and then the handle is operated separately to fully lock the door. There is a problem that the lock cannot be locked, making it time-consuming to lock it, and the problem is that the structure becomes complicated because the lock, the locking rod, and the locking device are separate devices, which increases the cost. The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to eliminate the trouble of temporary locking of the conventional technology, and to enable the final locking to be performed at the same time as the door is closed. When unlocking, an electrical signal is used to perform the unlocking operation, and in case of emergency locking, such as when the unlocking number is forgotten, the unlocking operation is performed using a master key, making it possible to easily open the lock by simply rotating the external operating member. The object of the present invention is to provide an automatic locking device for lockers that has simple procedures and is economical with a small number of parts. 2. Means for solving the above problems In order to achieve the above objects, an automatic locking device for lockers according to the present invention is provided. , an external operating member attached to the door, a locking plate and a pair of upper and lower locking bars each interlocked with the external operating member under the action of a spring, and a lock attached to the locking bar so as to maintain the locked state. A bar locking member, an unlocking preventing member that locks the locking rod locking member so that it can be freely locked and detached, and a locking state of the locking rod locking member by an electrical signal when an unlock number is set using a numeric keypad. In the automatic locking device for a locker, the automatic locking device includes an electric signal drive mechanism that drives the unlocking prevention member so as to be able to release the door, and a master key cylinder is attached to the door;
The switch lever of the microswitch is pressed and held so as to be movable by a cylinder lever operated by a master key of the cylinder and maintained in a locking signal state, and the locking bar locking member is released from a locked state. A joint plate is arranged so that the unlock prevention member is interlocked, and on the other hand, a locking part in which the locking rod can be freely engaged and detached, and a locking part of the upper stile of the locker that can release the locking state of the locking rod are provided at the top of the door. The door is provided with a locking means for closing the door under the action of a spring which has a contact portion and the locking rod is held in a locked state. Ho. Function: In the automatic locking device for a locker of the present invention, if the unlocking number is forgotten while the locker is being locked (during use), emergency unlocking and relocking for checking the contents can be performed as follows. First, when the master key kept by the administrator is inserted into the cylinder 4 and rotated by a required angle in a predetermined direction, the cylinder lever 48 is rotated together with the master key, and the joint plate 19 resists the spring force. and then moved. The joint plate 19 presses and holds the switch lever 26 of the microswitch 25 to maintain the locking signal state, and moves the unlocking prevention member 32 against the spring force, so that the locking bar retaining member 28 is in the locked state. Cancel. Next, when the external operating member 5 is rotated in a predetermined direction, the locking plate 12 is rotated against the spring force and retracted from the door 1, and at the same time, the pair of upper and lower locking bars 13, 14 are also moved to close the door 1. It is retracted from the lock and becomes unlocked. In the unlocked state, the door closing/locking means 34 at the top of the door 1
The locking rod 13 is held in place by the locking portion 35.
Further, in order to relock the lock after the above-mentioned emergency opening, when the door is pushed closed, the contact portion 37 of the door closing/locking means 34 comes into contact with the upper stile 36 of the locker 2, and the door closing/locking means 34 is held in place by a spring. By rotating against the force and releasing the locking state of the locking rod 13, the pair of locking rods 13, 14 and the locking plate 12 protrude from the door 1 due to the spring force and are automatically locked. Become. At this time, the external operating member 5 is also reversed and returned to its original position by the spring force. In addition, when unlocking with an electrical signal, when an unlock code number is set using the numeric keypad 42, the electrical signal is input to the electrical signal drive mechanism 31, which activates the electrical signal drive mechanism 31 and unlocks the lock. The prevention member 32 is operated and the locking state of the locking rod locking member 28 is released, and the rotation of the external operating member 5 in a predetermined direction causes the locking plate 12 and the pair of upper and lower locking rods 13% 14 to open the door l. It will be in the unlocked state when it is pulled in. fart. EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the door 1 is pivotally connected to the locker 2 by a hinge (not shown) on its hanging side so that it can be opened and closed. A case 3 is fixed to the upper part of the inner surface of the door 1 on the open end side,
A cylinder 4 for a master key and an external operating member 5 rotatable left and right are provided on the front surface of the case 3 in a positional relationship corresponding to the upper and lower parts thereof, respectively. The case 3 has two sliding plates 6 at the bottom inside thereof.
The screws 8 and 9 screwed onto the slide plates 6 and 7 are inserted into the elongated holes 10 and 11 of the case 3 so that the external operation member 5 can be slid vertically when the external operation member 5 is rotated left and right. It is set up. The external operating member 5 is located inside the case 3 and is connected to the locking plate 1.
2 are fixed so as to rotate integrally, and the bottles 5b and 5 are fixed at target positions on a virtual circumference centered on the rotation axis 5a.
b are provided in a protruding manner, and the bins 5b and 5b are provided horizontally at opposing ends of the slide plates 6 and 7, respectively, in grooves 6a.
, 7a, so that the slide plates 6 and 7 are connected to each other so that they slide symmetrically in the vertical direction as the external operating member 5 rotates forward and backward in the left and right directions. Each of the slide plates 6 and 7 has locking rods 13 and 1, respectively.
4 are connected symmetrically in the vertical direction, the upper locking rod 13 penetrates the earthen wall of the case 3 and protrudes upward from the upper edge of R1, and the lower locking rod 14 is connected to the It penetrates the lower wall of the case 3 and the lower edge of the door 1 and projects downward. In addition, the locking plate 12 and a pair of upper and lower locking rods 13
14 are each held biased by a spring 15 in the direction of protruding from the door l. More specifically, the spring guide pin 17, which is erected from the spring guide 16 inside the case 3, is slidably inserted into the spring receiver 6b of the slide plate 6, and both ends are supported by the spring receiver 6b and the spring guide l6. \A compression spring 15 is mounted on the spring guide bin 17 and the slide plate 6 is constantly urged upward, so that the locking plate 12 and the pair of upper and lower locking rods 13 and 14 are moved outward from the door 1. At the same time, a rotational force is applied to the external operating member 5 in the direction in which it is held in the locked position. A sub-case 18 is fixedly installed in the upper interior of the case 3, and the cylinder 4, which is disposed through the sub-case l8, has a cylinder lever 4 at its inner end.
A is attached to the shaft. The sub case 18 has a top surface approximately L.
A letter-shaped joint plate 19 is attached to the sub-case 18.
Bins 20 and 21 protruding from the joint plate 1
By fitting into the horizontally elongated holes 22 and 23 that pass through the hole 9, it is attached so as to be slidable laterally. The joint plate 19 has a spring hook on one end thereof and a pin 20 on the other end.
The cylinder lever 4a is biased to the right in FIG. 1 by a spring 24 hooked and tensioned between the cylinder levers 4a and 4a, and when the cylinder lever 4a is rotated in the direction of arrow a shown in FIG. 7 by a master key (not shown), The joint plate 19 is provided so as to be moved in the direction of arrow b by the pressing force of the cylinder lever 4a against the spring force. Further, a microswitch 25 is disposed in the sub-case l8, and a switch lever 26 is connected to the microswitch 25.
The lever 25b between the terminals 25a and 5 is rotatably supported so as to be able to press into contact with the terminals 25a of the terminals 25a. Two locking rod retaining members 27 and 28 are fixed to the upper portion of the upper locking rod 13 with an appropriate distance maintained in the vertical direction. Of these locking rod locking members 27 and 28, the upper locking rod locking member 27 is connected to the switch lever 2 as shown in FIGS. is held down and functions to maintain the lock signal state. On the other hand, the lower locking rod retaining member 28 functions to maintain the locked state by engaging with an unlocking prevention member to be described later. Further, a lock plate 30 is fixed to the upper part of the upper locking rod 13 via a lock guide ring 29. The lock plate 30 locks and holds the joint plate 19 and cylinder lever 4a in a predetermined position as shown in FIG. 6 when the locking device is unlocked by an electrical signal. Further, the sub-case 18 is provided with an electric signal drive mechanism 31 and an unlock prevention member 32 that is moved in the left-right direction by the electric signal drive mechanism 31 at a lower portion of the joint plate 19. The electric signal drive mechanism 31 is composed of a solenoid 31a, and the unlocking prevention member 32 is formed by the solenoid 31a.
A compression spring 33 is fixed to the solenoid core rod 3lb, and is interposed between the unlocking prevention member 32 and the solenoid 318.
As a result, the solenoid core rod 3lb and the unlocking prevention member 32 are urged forward, that is, to the right in FIG. hold. The solenoid 31a is energized and excited by an electric signal, and the solenoid core rod 3lb retreats against the spring force of the spring 33, thereby causing the unlocking prevention member 32 to move as shown by the two-dot broken line in FIG. The locking rod is moved backward in the direction of arrow C to release the locking state of the locking rod locking member 28. Furthermore, a door closing/locking means 34 is provided on the upper part of the case 3.

The door closing/locking means 34 is composed of a trigger plate 34a and a spring 34b, as shown in FIGS. 3 and 4. Among them, the trigger plate 34a has a locking part 35 in the shape of a planar lock hole, which has a narrow hole 35a opened at one end thereof and a large diameter hole 35b connected to the narrow hole 35a.
is provided so that the small diameter portion 13a at the upper end of the locking rod l3 is removably locked, and the contact portion 3 with the upper stile 36 of the locker 2 is located in a symmetrical position to the locking portion 25.
The other end of the trigger plate 34a is rotatably supported horizontally on the back surface of the top wall of the case 3 by means of a trigger pin 38, and the other end of the trigger plate 34a is The spring 34b is placed between the spring receiver 39 and the case 3, which are bent to
3, the small diameter portion 13a of the locking rod 13 is inserted into the narrow hole 35 of the locking portion 35 when the locking rod 13 is retracted.
a, so that the locking rod 13 is locked and held in the state shown by the solid line in Fig. 4. When the door 1 is closed while the locking rod 13 is in the locked state, the abutting portion 37 abuts against the upper stile 36 of the locker 2, and the trigger plate 34
When a is rotated in the direction opposite to the arrow d against the spring force, the locking rod l3 is fitted into the large diameter hole 35b, and the locked state of the locking rod 13 is released. ．． Note that the trigger plate 34a is regulated to a constant rotation angle by fitting a trigger pin 41 protruding from the case 3 into an elongated hole 40 provided approximately at the center of the trigger plate 34a. It is now possible to do so. In Fig. 2, 42 indicates a numeric keypad, and 43 indicates a lock number display window. Next, Figure 5 is a block circuit diagram showing an example of an electric key unit used in the automatic locking device. In Fig. 5, 44 is a door switch, which is turned ON when the door is closed. 45 is a single chip microcombiner, 46
, 47 is a photocoupler, 48 is an IC power supply, 49 is a lamp indicating that it can be used (unlocked), and 50 is in use (locked)
and 51 indicate a buzzer. to. Effects of the Invention Since the present invention is constructed as described above, by performing n-closing, the door closing/locking means 34 comes into contact with the upper stile 36 of the locker 2, and the locked state of the locking rod 13 can be released. By operating the door, the final tightening is performed at the same time as the door is closed, eliminating the need for temporary locking. In addition, when unlocking using an electrical signal, the lock can be opened easily and quickly by simply performing the unlocking operation using the numeric keypad and rotating the external operating member 5.
In case of emergency unlocking, such as when forgetting the unlock code, after operating the cylinder lever 4a for unlocking using the master key, the lock can be easily opened by simply rotating the external operating member 5, thus locking and unlocking. It has many advantages such as the locking procedure is simple, the number of parts is small because temporary locking members are omitted, and an economical locking device can be provided.

[Brief explanation of drawings]

FIG. 1 is a rear view showing an embodiment of the automatic locking device for a locker according to the present invention, FIG. 2 is a front view showing the usage state of the same embodiment, and FIG. 3 is a door closing/locking means 3 in the same embodiment.
4 is a vertical sectional view taken along the line IV--IV in FIG. 3, FIG. 5 is a block circuit diagram of the electronic key unit used in the same embodiment, and FIG. 6 is an electrical diagram of the same embodiment. FIG. 7 is a rear view showing a state in which the lock is unlocked by a signal, and FIG. 7 is a rear view showing a state in which the lock bar locking member 28 is unlocked by the master key of the same embodiment. Main symbols in the diagram 1 ・ ・ 4 ・ ・ 4a ・ 5 ・ ・ 1 2 ・ l 3, l 5, 1 9 ・ 2 5 ・ 26 ・ 27, 3 l ・ 32 ・ 34 ・ 35 ・ 37 ・ ・Door・Cylinder・・Cylinder lever ・External operating member ・・Lock plate 14 ・・Lock rods 24, 33 ・・Spring ・・3 inlet plate ・・Micro switch ・・Switch lever 28 ・・Lock rod locking member ・・Electric signal drive mechanism・Unlock prevention member・Door closing/locking means・Latching portion・Abutting portion 42・Numeric keypad

Claims (1)

[Scope of Claims] An external operating member attached to the door, a locking plate and a pair of upper and lower locking bars that are respectively interlocked with the external operating member under the action of a spring, and the locking bars are configured to maintain the locked state. A locking rod locking member to be attached, an unlocking prevention member to which the locking rod locking member is removably locked, and an electric signal when setting an unlock number using a numeric keypad to lock the locking rod locking member. An automatic locking device for a locker comprising an electric signal drive mechanism that drives the unlocking prevention member so as to release the locking state, and a master key cylinder is attached to the door, and
The switch lever of the microswitch is pressed and held so as to be movable by a cylinder lever operated by a master key of the cylinder and maintained in a locking signal state, and the locking bar locking member is released from the locking state. A joint plate is arranged so that the unlock prevention member is interlocked, and on the other hand, a locking part in which the locking rod can be freely engaged and detached, and a locking part of the upper stile of the locker that can release the locking state of the locking rod are provided at the top of the door. 1. An automatic locking device for a locker, comprising a door closing means having a contact portion and locking means for closing the door under the action of a spring that holds the locking rod in a locked state.