JP3020131U - Electronic lock device - Google Patents

Abstract

(57) [Summary] [Object] To provide an electronic lock device that can be downsized and reduced in cost. An electronic locking means having a locking member 36 that is put in and taken out behind a door stop 42b attached to the front part of the other side frame of the storage part, and a locking member locking part 42 that locks and unlocks the locking member 36. 30 is built in, and the unlocking number input unit 15 including a keyboard for unlocking the locking member 36 and the locking member 36 in an emergency are provided on the surface of the device.
Lock 16 for unlocking the locked state of the
In the electronic lock device 10 including the operation knob 17 for performing the advancing / retreating operation of 6, the master lock 16 has a plurality of keyholes 21A to 21C juxtaposed on its surface, and the key protrusion 19A of the flat master key 20 is provided. -19C in a horizontal state, the flat key operation type master lock 16 is individually inserted into the corresponding keyholes 21A to 21C and unlocked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic lock device, and more particularly, to a registration number input type electronic lock device that is installed in, for example, a locker, a shoe box, a security box, or the like.

[0002]

[Prior art]

 For example, many lockers that can be used by customers in a timely manner are installed in the locker rooms of clubhouses on golf courses, etc., but in recent years, a code number input type electronic device that does not require cumbersome key storage during use is used. Lockers with a locking device have been developed. However, as a drawback of the electronic lock device, the lock state was often unable to be unlocked due to the forgetting of the password of the locker used, the failure of the precise and fragile electronic circuit, power failure, or battery exhaustion. Therefore, the electronic lock device is usually equipped with a master lock so that the luggage in the locker can be taken out even in such an emergency. Conventionally, cylinder locks have generally been used as master locks for electronic lock devices. In this lock, the bottom ends of several pin tumblers that are lined up in a spring-loaded state are aligned in the cylinder so that the plug rotates and the final tightening bolt is inserted and removed to unlock the lock. is there. By changing the length and keyhole of the pin tumbler, you can create innumerable key differences.

[0003]

[Problems to be solved by the device]

 However, in such a cylinder type master lock, it is necessary to store several pin tumblers, a corresponding number of springs, various tightening bolts, and other various components in a cylindrical cylinder, so the cylinder diameter is It tended to grow, and the locks themselves tended to increase in size. This inevitably causes the entire electronic lock device to become large. In addition, cylinder locks tend to be more expensive than other locks because of the large number of parts and the complicated internal structure.Moreover, the use of cylinder locks made the electronic lock device larger. However, there was a problem that the cost of the entire device was high.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic lock device that can be downsized and reduced in cost.

[0005]

[Means for Solving the Problems]

 The electronic lock device according to claim 1, which is in accordance with the above object, wherein the electronic lock device is attached to a front part of a one-side frame of the storage part and attached to a door that is opened and closed to the front side through a hinge. A lock member that is put in and out behind a door stop attached to the front part of the other side frame, and an electronic lock means that has a lock member lock part that locks and unlocks the lock member is built in, and the device An unlocking number input section consisting of a keyboard for unlocking the locking member, a master lock for unlocking the locked state of the locking member in an emergency, and an operation knob for advancing and retracting the locking member are provided on the surface. In the electronic lock device, a plurality of keyholes are arranged on the surface of the master lock, and the key projections of the flat plate-shaped master key are horizontally inserted into the corresponding keyholes individually. Flat to unlock I have a master lock key operation type.

According to another aspect of the electronic lock device of the present invention, a front unit mounted on the front side of the door that is opened and closed to the front side via a hinge at the front of the one-side frame of the storage section, and the back side of the door. And a rear unit attached to the front unit, and the front unit includes an unlocking number input section including a keyboard of electronic lock means with a microphone, and the electronic lock means from the front of the other side frame of the storage section. In an electronic lock device in which an operating knob for operating a locking member that is put in and out behind a door stop attached to a lock portion and a master lock attached to a locking member lock portion of the electronic locking means are provided. The master key of the master lock is a flat plate key having a plurality of key protrusions, and a plurality of key holes into which the key protrusions of the master key can be inserted are arranged on the surface of the master lock. A plurality of pin tumblers, which are provided in the master lock and are urged toward the keyhole by an elastic member, and in which a groove is formed at an arbitrary height on the peripheral side surface, are movable in the axial center direction. Further, the master lock is provided with a master unlocking member that slides laterally toward the unlocking side of the locking member lock part along the groove part whose height is aligned by the movement of each pin tumbler. There is.

An electronic lock device according to a third aspect is the electronic lock device according to the second aspect, wherein the front unit has the unlocking number input section, the unlocking number input section, and the lower section in this order. A master lock and the rotary operation knob are provided, and the electronic locking means includes a solenoid as the locking member locking unit capable of locking the locking member at a locking position and an unlocking position, and A buzzer that informs the unlockable state of the locking member and a door closing that is individually arranged on both sides of the rotation range of the base of the operation knob and indirectly detects the protruding state or the retracted state of the locking member. , An open-side limit switch, a contact plate that is always urged to the back side of the door by an elastic member in a state where the tip portion is projected outward, and a door-contact contact sensor for the contact plate. The electronic lock means, The master unlocking member comes into contact with the forced unlocking protrusion that is provided on the circumferential side surface of the rod of the solenoid, and the pushing member of the forced unlocking protrusion that is axially attached to the rear unit side. As a result, the rod is pulled in by the pushing member rotated toward the unlocking side.

[0008]

[Action]

 In the electronic lock device according to any one of claims 1 to 3, the master lock to be used when the unlocking number input section has a malfunction or when the number to be input to the unlocking key is forgotten, is placed in the keyhole in a horizontal state. Since it is a flat key operation type to be inserted, the vertical mounting width of the master lock can be reduced. Therefore, in the front unit attached to the front side of the door, the unlocking number input section, the master lock and the operation knob can be arranged in a vertically packed manner.

In the electronic lock device according to claims 2 and 3, when a failure or the like occurs in the electronic lock means, when each key protrusion of the master key is inserted into the corresponding key hole of the master lock, a pin tumbler at the back of each key hole is provided. Is pushed in by the length of the inserted key protrusion against the urging force of the elastic member, which causes the grooves formed on the peripheral side surface of each pin tumbler to line up, and in that state, Along with this, the master unlocking member is horizontally slid toward the unlocking side, whereby the locking member locking portion of the electronic locking means is unlocked.

Further, in the electronic lock device according to the present invention, when the contact plate abuts on the door stop on the door mounting side when the door is closed, the door stop contact sensor sends the door stop contact signal to the microcomputer. Is sent, and the circuit of the microcomputer enters the door close mode. After that, when the operation knob is turned to the door closing side, the locking member projects from the electronic locking means behind the door stop and is locked. At this time, the base of the operation knob comes into contact with the door-closed side limit switch, and the rod of the solenoid projects and is locked by the locking member in response to a command from the microcomputer that received the contact signal. The protruding state of is retained. When the door is opened, if a pre-registered number is entered in the unlocking number input section, the microcomputer will judge the input signal, and if the number is the same, the rod of solenoid will pull in according to a command from the microcomputer. When the locked state of the locking member is unlocked, the buzzer sounds to notify the unlocked state. After confirming the unlockable state with the buzzer, the user unlocks by rotating the operation knob to the door opening side. At this time, the base of the operation knob comes into contact with the door open side limit switch, and in response to a command from the microcomputer that received the contact signal, the rod of the solenoid protrudes and is locked at another part of the locking member. , The locked state of the locking member is maintained.

When the electronic lock means is broken down, the pin tumbler of the master lock is pushed by the master key to arrange the groove portions in a line, and then the master unlocking member is slid sideways to the unlocking side. By abutting against the push-in member and rotating it, the rod of the solenoid is forcibly pulled in through the forced unlocking protrusion. As a result, the locked state of the locking member is released, and the lock can be unlocked at any time by rotating the operation knob.

[0012]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. In the description, the upward direction, the downward direction, and the lateral direction refer to the direction of the electronic lock device when it is assembled to the door. 1 is a schematic side view of an electronic lock device according to an embodiment of the present invention, FIG. 2 is a plan sectional view of the electronic lock device attached to the door, FIG. 3 is a front view thereof, and FIG. 4 is an exploded perspective view thereof. Fig. 5, Fig. 5 is an enlarged cross-sectional view of the master lock, Fig. 6 is an enlarged plan view of the master lock, Fig. 7 (a) is an enlarged cross-sectional view of a main part showing a locked state of the master lock, and Fig. 7 (b) is a master lock. FIG. 8 is an enlarged sectional view of an essential part showing an unlocked state, FIG. 8 is a flow chart diagram when the door of the electronic lock device is closed, and FIG. 9 is a flowchart diagram when the door of the electronic lock device is opened. As shown in FIGS. 1 and 2, an electronic lock device 10 according to an embodiment of the present invention is a door that is opened and closed on a front side of a one-side frame of a storage part 71 of a rocker 70 by a hinge. 11 locks the door 11 by projecting a locking member 36, which will be described later, behind the door stop 42b screwed to the front part of the other side frame 72 of the storage part 71, and registered in advance. This is an electronic lock that is unlocked by keying in the unlocked number and pulling back the locking member 36. The electronic lock device 10 includes a front unit 12 attached to the front side of the door 11 and a rear unit 13 attached to the back side of the door 11. First, the front unit 12 will be described in detail with reference to FIGS. As shown in FIGS. 1 to 4, the front unit 12 is provided with an unlocking number input section 15, a master lock 16, and a rotary operation knob 17 in the order of an upper part, a central part and a lower part of a casing 14 which is a main body. Has been done.

The unlocking number input section 15 composed of a keyboard has a total of 12 input keys 15 a of 0 to 9, C, and M that slightly project from the surface of the casing 14, and behind the electronic key is an electronic key. The board 18 on the front unit 12 side of the locking means 30 is attached. A microcomputer (microcomputer chip) 31 is mounted on the back surface of the substrate 18. The master lock 16 is a horizontal flat key operation type lock that can be unlocked by a master key 20 which is a flat key having three key protrusions 19A to 19C, and corresponds to the key protrusions 19A to 19C. It has three key holes 21A to 21C and an operation rod insertion hole 21D used when an actual unlocking operation is performed by inserting a tip of an operation rod (not shown) such as a thin screwdriver. The details will be described later.

The operation knob 17 is a large knob inserted into a large-diameter knob hole 14 a formed in the lower portion of the casing 14, and a rotating plate 22 is fixed to the back surface of the operation knob 17. The rotating plate 22 is attached via a rotating shaft 24 to a mounting plate 23 having a large notch 23a at the center of the upper part and screwed to the back surface of the casing 14, and the casing 14 By the thin spring plate 25 along the lower side plate, it is pushed up from below with an appropriate force, so that some rotation is restricted. Further, an operation projection piece 26 that extends toward the rear unit 13 and is rotatable in the cutout portion 23a of the mounting plate 23 is integrally formed on a part of the outer edge portion of the rotation plate 22. At both ends of the notch 23a of the mounting plate 23, door closing / opening side limit switches 27, 28 with which the operating projection 26 abuts are arranged. When the operation knob 17 is rotated about the rotation shaft 24 (here, about 45 °), the operation protrusion 26 rotates in the same direction and abuts on the door closing / opening side limit switches 27, 28. As a result, a closing or opening signal of the locking member 36, which will be described later, is sent to the microcomputer 31 to indirectly detect the protruding state or the retracted state of the locking member 36. Next, the rear unit 13 will be described in detail with reference to FIGS.

As shown in FIGS. 1 and 4, the rear unit 13 side of the electronic lock means 30 is provided from the upper part to the central part of the casing 29, which is the main body, and the battery box 29a is provided below the casing 29. Has been. The rear unit 13 side of the electronic lock means 30 has a substrate 32 provided on the upper portion of the casing 29, and a mounting plate 33 is screwed to the casing 29 above the substrate 32. A window 33a is formed near the center of the mounting plate 33, and the rear side connection plug 34 provided on the substrate 32 is exposed from the window 33a. A front-side connection plug 35 to which several lead wires extending from the circuit of the board 18 of the front unit 12 are connected is detachably connected to the rear-side connection plug 34. A substantially wedge-shaped notch 29b is formed at the center of one end of the casing 29, and a locking member 36 having a U-shaped cross-section that substantially matches the wedge shape at the bottom of the notch 29b. It is mounted on a horizontally long slide pedestal 29c in the center of the. The locking member 36 is formed with elongated holes 36a and 36b on both sides thereof, and the first protrusion 36c is integrally formed on the lower edge of the central portion of the locking member 36. The second protrusion 36d is integrally formed on the lower edge of the member 36 on the base side. Furthermore, a rod hole 36e is formed in the upper plate near the base of the locking member 36. On the upper surface of the locking member 36, a horizontally long stile plate 37, which is an abutting plate whose tip portion protrudes outward from the cutout portion 29b, is provided with a mounting thickness with a base portion side slightly bent toward the sliding pedestal 29c as a fulcrum. It is attached in a biased state so as to be rotatable in the vertical direction.

Specifically, a large-diameter guide pin 38, which holds the locking member 36 slidably in the lateral direction, slides on the sliding base 29c through a long hole 36a on the side of the notch 29b. A pin hole 37a, which is planted on the pedestal 29c and into which the guide pin 38 is loosely inserted, is formed near the tip of the stile plate 37. The pin hole 37a is formed in an elliptical shape with a space so as not to hinder the rotation of the stile plate 37 in the thickness direction of the device. On the other hand, a pin hole (not shown) is formed on the base portion side of the stile plate 37, and the stile plate 37 is opened through the pin 40 inserted through the pin hole and the long hole 36b of the locking member 36. A leaf spring 39, which is an example of an elastic member that is pressed against the upper surface of the locking member 36 that is the back side of 11, in a biased state is attached to the sliding pedestal 29c. Further, a projecting piece 37b is integrally formed on the upper edge of the stile plate 37 near the end on the pin hole 37a side, and a contact-type stile plate 37 near the notch 29b on the bottom side of the casing 29 is provided. The door stop contact sensor 41 is fixed.

With such a structure, the locking member 36 is slid laterally along the guide pin 38 and the pin 40, so that the locking member 36 is put in and taken out from the notch 29b of the casing 29. In FIG. 4, the solid line position of the locking member 36 is the locking position, and the two-dot chain line position thereof is the unlocking position. The stile plate 37 resists the urging force of the leaf spring 39 when it collides with the door stop 42b (see FIGS. 1 and 2) attached to the front portion of the other side frame 72 of the storage portion 71 of the locker 70. And a slight width rotation in the thickness direction of the device, whereby the projecting piece 37b of the stile plate 37 separates from the door contact sensor 41, and a door contact signal is sent to the microcomputer 31. A solenoid 42, which is an example of a locking member locking portion of the electronic locking means 30, is fixed on the back surface in the vicinity of a corner of the mounting plate 33 on the base side of the stile plate 37. When the locking member 36 is in the locking position, the locking member 36 is inserted / removed behind the base of the locking member 36, and when the locking member 36 is in the unlocking position, the locking member 36 is inserted / removed into / from the rod hole 36e. A forced unlocking projection 43 of the solenoid 42 is provided on the circumferential side surface of the rod 42a. Next, the detailed structure of the master lock 16 will be described with reference to FIGS.

As shown in FIGS. 4 to 6, the master lock 16 has a sliding pedestal 14 b integrally formed on the inner surface of the central portion of the casing 14 of the front unit 12. On the sliding base 14b, a fixed plate 44 having a downward U-shaped cross section in FIGS. 4 and 5, and a sliding plate 45 which is an example of an upward master U-shaped cross-section in the same figure. And are installed one after another. Both the plates 44 and 45 have substantially the same length as the sliding pedestal 14b, and an operating projection 60 is integrally formed on the upper edge of the sliding plate 45 so that the front end is bent and extends toward the rear unit 13 side. Has been done. At both ends of the sliding pedestal 14b, the fixing plate 44 is fixed through the screw holes 44a, and the sliding plate 45 is laterally slidably held through the screw holes 45a. Has been formed. A circular screw hole 44a and a long screw hole 45a are formed at the screw hole 14c positions of both plates 44 and 45. A tumbler storage portion 14e for storing three pin tumblers 47A to 47C slidably in the thickness direction of the apparatus is formed at positions of the key holes 21A to 21C between the screw holes 14c. Further, an operation rod hole 14d is formed at a position of the operation rod insertion hole 21D of the sliding base 14b.

Each of the pin tumblers 47A to 47C is a short rod having a substantially D-shaped cross section, and is provided on its peripheral side surface at different height positions corresponding to the key protrusions 19A to 19C of the master key 20. Groove portions 48A to 48C are formed. A spring 49, which is an example of an elastic member for urging the pin tumblers 47A to 47C toward the corresponding key holes 21A to 21C, is housed in each of the key holes 21A to 21C. Since the tip end portions of the pin tumblers 47A to 47C project outward from the sliding plate 45, the two plates 44, 45 have a substantially D-shape in plan view at positions corresponding to the pin tumblers 47A to 47C. Individual tumbler holes 44b and 45b are formed. The screw hole 45a of the sliding plate 45 and the tumbler holes 44b, 45b on the door closing side limit switch 27 side have a width slightly longer than the width of the pin tumblers 47A to 47C at the groove portions 48A to 48C, and the sliding plate 45 has a width slightly larger than that of the sliding plate 45. Is extended by the sliding length of.

A long hole 50 is formed at the position of the operation rod hole 14d of the fixed plate 44, and a small hole 45c for hooking the tip of the operation rod (not shown) at the position of the long hole 50 of the sliding plate 45. Are formed. The side plate on the door opening side limit switch 28 side of the casing 14 is a bent plate that biases the sliding plate 45 toward the door closing side limit switch 27 side at a position facing one end surface of the sliding pedestal 14b. The original side of the spring 51 is attached. The sliding plate 45 is pushed into the leaf spring 51, and normally, the sliding plate 45 is superposed on the sliding pedestal 14b and the fixed plate 44.

As shown in FIG. 7, the key protrusions 19A to 19C of the master key 20 having different lengths are pushed into the corresponding keyholes 21A to 21C of the master lock 16 to resist the biasing force of the spring 49. , The pin tumblers 47A to 47C project toward the rear unit 13 side by a predetermined length through the tumbler holes 44b and 45b. As a result, the heights of the groove portions 48A to 48C of the pin tumblers 47A to 47C are made uniform at the bottom plate portion of the sliding plate 45. In this state, the tip of the operation rod (not shown) inserted into the operation rod hole 14d from the operation rod insertion hole 21D is inserted into the small hole 45c of the sliding plate 45 through the long hole 50, and the spring is inserted. The sliding plate 45 is moved toward the leaf spring 51 against the urging force of.

On the other hand, the operating projection 60 of the sliding plate 45 comes into contact with the lower end of the mounting plate 33 of the rear unit 13 and rotates toward the unlocking side, thereby forcibly driving the rod 42a of the solenoid 42. A pushing member 53 for pulling in is pivotally attached via a pin 52. The pushing member 53 is a deformed L-shaped plate member, and the pin hole 53a of the pin 52 is a long hole. The pushing member 53 includes a long portion 53b on the door-contacting contact sensor 41 side and a short portion 53c on the opposite side integrally formed with a step, and the operation protrusion is provided on the base side of the short portion 53c. The contact portion 53d is bent and formed in an inclined state. One end of a rod spring 54 made of a piano wire is fixed to the tip of the elongated portion 53b, and the center of the rod spring 54 is wound around the pin 52, and the other end of the rod spring 54 is attached to the mounting plate 33. It is fixed to a rising piece 33b which is formed in a bent shape near the end of the lower part of the door stop contact sensor 41 side. Moreover, the protruding piece 53e integrally formed at the tip of the longitudinal portion 53b is constantly pressed against the one side edge of the rising piece 33b by the urging force of the rod spring 54. A long hole 53f into which the forced unlocking protrusion 43 fixed to the rod 42a of the solenoid 42 is inserted is formed at the center of the short portion 53c.

When the operating projection 60 pushes the operating projection abutting portion 53d of the pushing member 53 in the direction of the arrow in FIG. 4 by the lateral sliding of the sliding plate 45, the pushing member 53 moves counterclockwise around the pin 52. Try to rotate in the direction. At this time, since the protruding piece 53e at the tip of the longitudinal portion 53b is hooked on the rising piece 33b of the mounting plate 33, the pushing member 53 does not contact the rising piece 33b of the protruding piece 53e. It is pushed upward with the fulcrum, whereby the forcible unlocking protrusion 43 is pulled up at the formation portion of the long hole 53f of the short length portion 53c, the rod 42a of the solenoid 42 is forcibly pushed in, and the locking member 36 is brought into a free state. . In FIG. 1, reference numeral 61 is a spring mounted on the rod 42a of the solenoid 42, reference numeral 62 is a buzzer, reference numeral 63 is a screw hole column, and reference numeral 64 is a positioning piece engaged with the screw hole column 63 in FIG.

Next, the operation of the electronic lock device 10 according to the embodiment of the present invention will be described based on the flowcharts shown in FIGS. First is when the door is closed. As shown in FIG. 8, after the start of step 100, in step 101, when the luggage is put in the storage portion 71 of the locker 70 and the door 11 is closed, the stile plate 37 comes into contact with the door stop 42b of the locker 70, and Rotate a little width around the base. As a result, the detecting portion of the door-contacting contact sensor 41 is separated from the protrusion 37b of the stile plate 37, and a door-contacting contact signal is sent to the microcomputer 31. Further, in step 102, the user of the locker 70 arbitrarily registers an unlocking number of several digits by using the input key 15a of the unlocking number input unit 15. In step 103, when the user rotates the operation knob 17 to the door closing side, the door closing side limit switch 27 sends an ON signal, that is, a locking signal to the microcomputer 31. Here, the fact that the door closing side limit switch 27 is turned on means that the locking protrusion 36 of the operation knob 17 inserted between the first and second protrusions 36c and 36d of the locking member 36 is locked. This means that the member 36 is locked from the notch 29b of the casing 29 so as to project behind the door stop 42b. In step 104, the command from the microcomputer 31 causes the rod 42a of the solenoid 42 to project, whereby the tip of the rod 42a is inserted behind the locking member 36, and the locking member 36 is locked at the locking position. Is closed, and the flow when the door is closed ends (step 105).

On the other hand, when the door is opened, as shown in FIG. 9, after the start of step 106, the user inputs the unlocking number with the input key 15a of the unlocking number input section 15 (step 107). In step 108, it is judged whether or not the input unlocking number is correct, and when it is correct, the process proceeds to step 109, and the buzzer 62 for notifying the unlockable state sounds. At about the same time, in step 110, the rod 42a of the solenoid 42 is retracted and the locked state of the locking member 36 is released by a command from the microcomputer 31. In step 111, it is judged whether or not the operation knob 17 is turned to the unlocking side to retract the locking member 36 and the door open side limit switch 28 is turned on, and the ON signal, that is, the unlocking signal is sent to the microcomputer. In the case of being sent to 31, the rod 42a of the solenoid 42 is projected again and the tip end thereof is inserted into the rod hole 36e of the locking member 36, so that, for example, the locking member 36 opens and closes the door 11. Occasionally, free sliding is stopped, and the flow when the door is opened ends (step 113).

Here, when the electronic lock means 30 is out of order or the unlocking number (password) is forgotten, the master key 20 is used to unlock the master lock 16. That is, when the key protrusions 19A to 19C of the master key 20 are inserted in the key holes 21A to 21C of the master lock 16 in a horizontal state, the key protrusions 19A to 19C resist the biasing force of the springs 49. , And press the corresponding pin tumblers 47A to 47C by a predetermined length. As a result, the grooves 48A to 48C are aligned in a row at the height position of the sliding plate 45, and then an operating rod (not shown) is inserted into the operating rod insertion hole 21D, and the tip of the rod is slid on the sliding plate. When the sliding plate 45 is pushed toward the plate spring 51 side against the biasing force of the plate spring 51, the operating protrusion 60 of the sliding plate 45 causes the operating protrusion 60 of the pushing member 53. By abutting against the abutting portion 53d and pushing it in, the pushing member 53 rotates around the projecting piece 53e of the elongated portion 53b. With this rotation, the forced unlocking protrusion 43 inserted into the long hole 53f of the short length portion 53c is pushed toward the unlocking side, the rod 42a of the solenoid 42 is forcibly pulled in, and the locked state of the locking member 36 is changed. It will be canceled. After that, by rotating the operation knob 17, the lock can be unlocked at any time. Note that, for convenience of explanation, the flowchart when the door is closed shown in FIG. 8 and the flowchart when the door is opened shown in FIG. 9 have been described separately, but in reality, they are continuous at the points AA and BB, respectively.

Thus, as the master lock 16, a flat plate key using the flat plate master key 20 having the three keyholes 21A to 21C arranged side by side and having the key protrusions 19A to 19C corresponding to the keyholes 21A to 21C Since the operation type lock is adopted, the master lock that uses the conventional cylinder lock has a cylindrical cylinder, so it is inevitable that the electronic lock device is lengthened not only in the lateral direction but also in the vertical direction. However, in the electronic lock device 10 of the present means, the master lock 16 is a horizontal flat plate that is long in the lateral direction (horizontal direction) but short in the vertical direction. Since the key-operated master lock is adopted, the vertical length of the electronic lock device 10 can be shortened by that much, and the device can be downsized. Moreover, as compared with the conventional expensive cylinder lock, it is easy to assemble and does not use a highly precise member, so the cost can be reduced. As the flat key-operated master lock 16, the master key 20 pushes the side-by-side pin tumblers 47A to 47C to move the sliding plate 45 to the unlocking side along the aligned grooves 48A to 48C. Since the rod 42a of the solenoid 42 is forcibly pulled in via the forced unlocking protrusion 43 by laterally sliding the pushing member 53, the number of constituent parts is small and smooth. The locking member 36 can be unlocked.

[0028]

[Effect of device]

 In the electronic lock device according to claims 1 to 3, since a plurality of keyholes are arranged side by side as the master lock and a flat key operation type master lock using a flat plate master key is adopted, Miniaturization and cost reduction can be achieved. Particularly, in the electronic lock device according to the third aspect, as the master lock, the master key is used to push the side-by-side pin tumblers, and the master unlocking member is horizontally pushed toward the unlocking side along the aligned grooves. Since the structure in which the solenoid rod is forcibly pulled in through the forced unlocking protrusion by sliding it to rotate the pushing member, the number of components is small and the locking member can be unlocked smoothly.

[Brief description of drawings]

FIG. 1 is a schematic side view of an electronic lock device according to an embodiment of the present invention.

FIG. 2 is a plan sectional view showing a state in which the door is attached to the door.

FIG. 3 is a front view of the same.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is an enlarged sectional view of a master lock.

FIG. 6 is an enlarged plan view of a master lock.

FIG. 7 (a) is an enlarged cross-sectional view of essential parts showing a locked state of the master lock. (B) It is a principal part expanded sectional view which shows the unlocked state in a master lock.

FIG. 8 is a flowchart of the electronic lock device when the door is closed.

FIG. 9 is a flow chart when the door of the electronic lock device is opened.

[Explanation of symbols]

 10 Electronic Locking Device 11 Door 12 Front Unit 13 Rear Unit 14 Casing 14a Knob Hole 14b Sliding Pedestal 14c Screw Hole 14d Operation Rod Hole 14e Tumbler Storage Section 15 Unlocking Number Input Section 15a Input Key 16 Master Lock 17 Operation Knob 18 Board 19A Key protrusion 19B Key protrusion 19C Key protrusion 20 Master key 21A Key hole 21B Key hole 21C Key hole 21D Operation rod insertion hole 22 Rotating plate 23 Mounting plate 23a Notch 24 Rotating shaft 25 Spring plate 26 Operation protrusion 27 Door closing side Limit switch 28 Door open side limit switch 29 Casing 29a Battery box 29b Cutout 29c Sliding pedestal 30 Electronic locking means 31 Microcomputer 32 Board 33 Mounting plate 33a Window 33b Start-up piece 34 Rear connection plug 35 Front connection plug 36 Locking member 36a Long hole 36b Long hole 36c First protruding piece 36d Second protruding piece 36e Rod hole 37 Stile plate 37a Pin hole 37b Projecting piece 38 Guide pin 39 Leaf spring 40 pin 41 Door contact sensor 42 Solenoid 42a Rod 42b Door stop 43 Forced unlocking protrusion 44 Fixing plate 44a Screw hole 44b Tumbler hole 45 Sliding plate 45a Screw hole 45b Tumbler hole 45c Small hole 46 Screw 47A Pin tumbler 47B Pin tumbler 47C Pin tumbler 48A Groove 48B Groove 49C Long groove 48C Hole 51 Leaf spring 52 Pin 53 Push member 53a Pin hole 53b Long part 53c Short part 53d Operation projection contact part 53e Projection piece 53f Long hole 54 Bar spring 60 Operation projection 61 Spring 62 Buzzer 63 Screw hole pillar 64 Positioning Piece 70 Rocker 71 Storage 72 Other Side Frame

Claims (3)

[Scope of utility model registration request] 1. An electronic lock device which is attached to a front part of a side frame of a storage part and which is attached to a door which is opened and closed to the front side through a hinge and which is attached to a front part of the other side frame of the storage part. An electronic locking means having a locking member to be put in and taken out behind the door stop and a locking member locking portion for locking and unlocking the locking member is built in, and the surface of the device,
An electronic lock including an unlocking number input unit composed of a keyboard for unlocking the locking member, a master lock for unlocking the locked state of the locking member in an emergency, and an operation knob for advancing and retracting the locking member. In the device, the master lock has a plurality of keyholes arranged in parallel on the surface thereof, and the key protrusions of the flat plate-shaped master key are in a horizontal state, and are individually inserted into the corresponding keyholes to perform an unlocking operation. An electronic lock device that is an operation type master lock. 2. A front unit attached to the front side of a door that is opened and closed to the front side via a hinge, and a rear unit attached to the back side of the door, in the front portion of one side frame of the storage section. , The front unit, an unlocking number input section consisting of a keyboard of electronic locking means with a microcomputer, and from the electronic locking means to the rear of a door stop attached to the front part of the other side frame of the storage section. In an electronic lock device in which an operation knob for operating the locking member and a master lock attached to the locking member lock portion of the electronic lock means are provided, the master key of the master lock has a key protrusion. A flat key having a plurality of keys, and a plurality of keyholes into which the respective key protrusions of the master key can be inserted are provided side by side on the surface of the master lock. A plurality of pin tumblers, which are biased by the member toward the keyhole, and in which a groove is formed at a position on the peripheral side surface at an arbitrary height, are housed movably in the axial direction thereof, and further, in the master lock, An electronic locking device comprising: a master unlocking member that laterally slides toward the unlocking side of the locking member locking part along the groove part whose height is aligned by the movement of each pin tumbler. 3. The front unit is provided with the unlocking number input section, the master lock, and the rotary operation knob in the order of an upper portion, a central portion, and a lower portion. Is a solenoid as the locking member lock portion capable of locking the locking member at the locking position and the unlocking position, a buzzer for notifying an unlockable state of the locking member, and a rotation range of a base portion of the operation knob. Doors that are individually arranged on both sides to indirectly detect the protruding and retracted states of the locking member, the door limit switch and the open side limit switch, and the tip of the door outwardly protruded. A contact plate urged to the back side, and a door stop contact sensor for the contact plate, wherein the electronic lock means is a forced unlocking protrusion provided on the peripheral side surface of the rod of the solenoid. , On the rear unit side A push-in member for the forced unlocking projection attached, and the push-in member rotated toward the unlocking side by contact with the master unlocking member causes the rod to be retracted. The electronic lock device according to claim 2.