JP3645285B2 - Cylinder lock - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an electronic lock that controls locking and unlocking by an electric signal, and more particularly to a cylinder lock that can be stably operated with low power consumption.
[0002]
[Prior art]
Electronic locks or electric locks (hereinafter referred to as electronic locks) that control the opening and closing of locks by performing authentication by signal processing using electrically stored data have become widespread because of their effectiveness in terms of security. I'm starting.
A general lock opening and closing device using the electronic lock is as follows.
An electronic key having a predetermined authentication code recorded in advance is inserted into the electronic lock. An authentication code is transmitted from the electronic key to the electronic lock, and the authentication code is checked by an electronic circuit in the electronic lock. If the authentication code is a valid code, the electromagnetic actuator in the electronic lock is activated by the control circuit, and the bolt is driven by the driving force of the electromagnetic actuator to lock or unlock the lock.
However, in such an electronic lock, since the bolt is directly driven by the electromagnetic actuator, a considerable output is required for the electromagnetic actuator, and a small electromagnetic actuator is insufficient. In addition, a power source having a sufficient capacity is required to drive the electromagnetic actuator, and it has been difficult to realize it with a small battery that can be incorporated in an electronic key.
[0003]
A cylinder lock disclosed in Japanese Patent Publication No. 6-13800 is an example of a cylinder lock that addresses the above problem. This cylinder lock is normally connected to the inner cylinder and outer cylinder with a pin so that they cannot rotate, and when locking / unlocking, this pin is removed so that the inner cylinder can be rotated and manually The cylinder is rotated and locked / unlocked. Therefore, since it is sufficient to use power only when the pin is removed, the opening / closing of the lock can be controlled with a small amount of power. This cylinder lock has a pin fixed to the plate spring on which the magnetic force of the permanent magnet and the spring force of the spring are acting. This is a structure in which the pin is removed.
[0004]
[Problems to be solved by the invention]
However, in the cylinder lock, the magnitude of the force of each part of the mechanism for removing the pin has to be strictly adjusted. Normally, the magnetic force of the permanent magnet acts on the leaf spring more strongly than the force of the spring. Even if the electromagnet does not act after the leaf spring has moved, the force of the spring must act stronger than the magnetic force of the permanent magnet. In other words, the leaf spring is moved or supported by the balance of the magnetic force of the permanent magnet, the spring force of the spring, and the magnetic force of the electromagnet. The installation conditions were difficult.
[0005]
Therefore, the object of the present invention is to control the opening and closing of the lock with a small amount of electric power. As a result, the drive device and the power source can be reduced in size, and can operate stably and install without strict and delicate adjustments. Is to provide an easy cylinder lock.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the inventor of the present application uses a motor that is not affected by external factors such as gravity and that is accurate and stable in operation, particularly a small motor with low power consumption, as a driving source. The structure to control the opening and closing was examined.
[0007]
According to the present invention, a cylinder lock that is locked and unlocked by a rotational force applied to an electronic key having an electronic circuit that transmits authentication data, the key having a keyhole into which the electronic key is inserted, the keyhole being Signal processing for receiving the authentication data from the electronic circuit of the electronic key inserted into the keyhole and receiving the authentication data from the rotating body that can rotate integrally by the rotation of the electronic key inserted, and for authenticating the electronic key And a motor device that is provided on the rotating body and that is driven to rotate only when the authentication result in the signal processing means is valid, and the rotation of the rotating body by driving the motor device connected to the motor device. a clutch mechanism for interlocking the drive bolts for locking and unlocking of the lock cylinder, when the electronic key the keyhole is not inserted is held near the keyhole opening by a spring force, It said comprising a push plate provided in the keyhole of the bottom to move with the movement of the electronic key when the electronic key serial to keyhole is inserted, and a key rod for transmitting the movement of the pusher plate A connecting mechanism that is housed in a rotating body and connects or releases the motor device and the clutch mechanism ;
Wherein the connecting mechanism, when the electronic key is inserted the into the keyhole, and the electronic key tip the motor device the key rod is moved by anti to pushes the push plate to the spring force and connecting the clutch mechanism, when the electronic key is removed from the keyhole, and the motor device the key rod is moved by hand the push plate to the spring force moves the keyhole opening direction A cylinder lock is provided that releases the interlock between the rotation of the rotating body and the driving of the bolt in the clutch mechanism while releasing the clutch mechanism.
Preferably, the signal processing means operates by receiving electric power from the electronic key, and the motor device is driven by electric power supplied from the electronic key.
[0008]
More preferably, the clutch mechanism has a coupling pin that can move forward and backward with respect to the rotating body and a shaft that drives the bolt that performs locking and unlocking as a rotation shaft in the vicinity of a surface on which the coupling pin advances and retracts. A clutch that is provided in parallel to the surface and has an opening or a recess for latching the coupling pin, and that rotates in conjunction with the rotating body when the coupling pin is latched in the opening or the recess. And a board.
Preferably, the signal processing means receives from the electronic circuit of the electronic key, a transmission means for transmitting information to and from the electronic circuit of the electronic key, a storage means for storing predetermined predetermined authentication data, and the electronic circuit of the electronic key. The authentication data is compared with the authentication data stored in the storage means to perform authentication.
[0009]
[Action]
In the cylinder lock of the present invention, first, when the electronic key is inserted, the motor device and the clutch mechanism are connected by the connecting mechanism, and the clutch can be driven by the motor. Also, authentication data is transmitted from the electronic key to the signal processing means, and an authentication process for checking the validity of the data is performed in the signal processing means. If the authentication result is valid, the motor is operated in the motor device, the clutch mechanism is driven, and the rotating body and the clutch plate interlocked with the bolt are connected. As a result, by rotating the inserted electronic key, the rotating body rotates, the clutch plate also rotates, and the lock is opened and closed.
When the electronic key is removed, the coupling mechanism disconnects the motor device and the clutch mechanism, and further disconnects the clutch mechanism. Therefore, even if the rotating body is rotated, it only rotates idle, and the lock is not opened or closed.
Even if the electronic key is inserted, if the authentication result is not valid, the motor does not operate and the clutch mechanism is not connected. As a result, even if the electronic key is rotated, the lock is not opened or closed.
[0010]
【Example】
One embodiment of the cylinder lock of the present invention will be described with reference to FIGS.
First, the structure of the cylinder lock of a present Example is demonstrated.
1A and 1B are views for explaining the structure of the cylinder lock of this embodiment, wherein FIG. 1A is a top sectional view and FIG. 1B is a side sectional view.
The cylinder lock 1 includes an outer cylinder 11, an inner cylinder 16, a clutch mechanism, a signal processing circuit, a motor device, and a coupling mechanism.
Hereinafter, the structure of each part will be described.
[0011]
The outer cylinder 11 is a cylindrical case that accommodates an inner cylinder 16 that accommodates a signal processing circuit, a motor device, and the like so as to be arbitrarily rotatable along a curved surface of the cylindrical side surface. The outer cylinder 11 is provided with a key hole 15a for inserting an electronic key at the center of one bottom surface, and an opening for passing the bolt drive shaft 30 at the center of the other bottom surface.
The outer cylinder 11 is a support portion when the cylinder lock 1 is installed on a door or the like. A hole having a diameter equivalent to that of the outer cylinder 11 is provided in the door or the like, and the outer cylinder 11 is attached by an adhesive, a pin, a screw or the like. By embedding the cylinder 11 in the hole, the cylinder lock 1 can be installed on the door.
The outer cylinder 11 is composed of an outer cover 12 and a base 13, but this is a structure for facilitating molding and assembling, and any other configuration regardless of the gist of the present invention. It may be.
[0012]
The inner cylinder 16 is a cylindrical member that accommodates each of the components of the cylinder lock 1 and is inscribed in the outer cylinder 11 and can be arbitrarily rotated along the cylindrical side surface of the outer cylinder 11. . The inner cylinder 16 is provided with a keyhole 15b for inserting an electronic key at the center of one bottom surface, and an opening 19 for advancing and retracting the coupling pin 23 at the edge of the other bottom surface. The key hole 15b forms the key hole 15 of the electronic key together with the key hole 15a of the outer cylinder 11 when the inner cylinder 16 is accommodated in the outer cylinder 11.
The inner cylinder 16 accommodates a signal processing circuit, a motor device, a coupling mechanism, and a coupling pin 23 of a clutch mechanism.
In addition, although the inner cylinder 16 is also comprised from the three inner covers 17a-17c, this is also the structure for making shaping | molding and an assembly easy similarly to the outer cylinder 11, and may be made into arbitrary structures other than this. .
[0013]
The clutch mechanism is a mechanism that interlocks the rotation of the inner cylinder 16 and the opening / closing of the lock, or disconnects the interlock, and includes a bolt drive shaft 30, a clutch plate 31, and a coupling pin 23.
The bolt drive shaft 30 is a rotating shaft that is linked to the movement of the bolt. Therefore, the lock is opened and closed by rotating the bolt drive shaft 30.
The clutch plate 31 is a disc provided between the inner cylinder 16 and the outer cylinder 11 on the bottom surface opposite to the keyhole 15 so as to be freely rotatable in the same direction as the inner cylinder 16. A bolt drive shaft 30 is joined to the center of the clutch plate 31. Therefore, the lock can be opened and closed by rotating the clutch plate 31. An opening 34 for hooking the coupling pin 23 is provided at the edge of the clutch plate 31.
[0014]
The coupling pin 23 is a bar provided so as to be able to advance and retract outside the inner cylinder 16 from the opening 19 of the inner cylinder 16. When this coupling pin 23 protrudes outside from the inner cylinder 16 and is hooked on the opening 34 of the clutch plate 31, the rotation of the inner cylinder 16 is transmitted to the clutch plate 31, and both rotate together. Become.
The coupling pin 23 is driven by the motor 27 of the motor device and protrudes from the inner cylinder 16 to the outside. The coupling pin 23 is stored in the inner cylinder 16 by the spring force of the spring 22 of the coupling mechanism when the electronic key is pulled out after locking and unlocking.
[0015]
The connecting mechanism connects the motor device and the clutch mechanism when the electronic key is inserted, and enables the clutch mechanism to be driven by the motor device. Further, when the electronic key is pulled out, the connection is released, and further, the connection of the clutch mechanism is released.
The structure of this coupling mechanism will be described with reference to FIG.
FIG. 2 is a diagram for explaining the structure of the coupling mechanism of the cylinder lock 1, and is a diagram schematically showing only the relevant part of the cylinder lock 1 shown in FIG.
The coupling mechanism shown in FIG. 2 includes a push plate 20, a key bar 21, a spring 22, a leaf spring 24, a fixed magnet 25, and a magnet 26 provided on the leaf spring 24.
[0016]
When the electronic key is inserted into the key hole 15, the push plate 20 abuts on the tip of the electronic key and is movable along with the movement of the electronic key so as to be provided at the bottom of the key hole 15. It is. A spring 22 whose end is fixed to the inner cylinder 16 acts on the push plate 20. When no electronic key is inserted, the push plate 20 is held near the opening of the key hole 15 by this spring force. ing. Further, a key bar 21 is joined to the side of the push plate 20.
The key bar 21 is a bar for transmitting the movement of the push plate 20, and one end thereof is joined to the side portion of the push plate 20. The end that is not joined to the push plate 20 is engaged with a portion inclined by 45 degrees toward the plate spring 24 and finally the plate spring 24 so as to push the plate spring 24 gradually. In order to move, it is further processed into a shape bent in two stages, a portion bent in the same direction. The key bar 21 is provided in the vicinity of the leaf spring 24 so that the inclined portion and the bent portion contact and act on the leaf spring 24.
[0017]
The leaf spring 24 is a connecting plate for moving the connecting pin 23 by the motor 27, and is fixed to the connecting pin 23 at one end, and has a structure that can rotate around the connecting pin 23 as a rotating shaft. .
In addition, a magnet 26 is provided at the other end of the leaf spring 24, and a fixed magnet 25 is provided at a position facing the magnet 26 of the inner cylinder 16. These two magnets 25 and 26 are magnetized so that a force for moving the leaf spring 24 in the direction of the rotating shaft 28 provided with the spiral groove 29 of the motor 27 acts. In this embodiment, the magnets 25 and 26 are magnetized so that an attractive force acts.
[0018]
In this connection mechanism, when the electronic key 50 is inserted and the key bar 21 is not acting on the leaf spring 24, the leaf spring 24 is engaged with the spiral groove 29 by the magnetic force of the magnet 25 and the magnet 26 and coupled to the motor 27. The pin 23 is connected. That is, when the motor 27 rotates, the leaf spring 24 moves along the spiral groove 29, and the coupling pin 23 fixed to the leaf spring 24 also moves.
When the electronic key 50 is pulled out, the leaf spring 24 is pushed in the direction opposite to the rotating shaft 28 of the motor 27 by the inclined portion of the key bar 21. As a result, the leaf spring 24 is detached from the spiral groove 29. Further, the leaf spring 24 is hooked by the bent portion of the key bar 21 and is pulled in the direction of the keyhole 15 by the force of the spring 22. As a result, the coupling pin 23 is moved into the inner cylinder 16 and held at a predetermined position.
[0019]
The signal processing circuit receives authentication data from an electronic key, compares it with previously stored authentication data, and determines whether the authentication data is valid data, thereby authenticating the electronic key. Circuit.
The configuration of this signal processing circuit will be described with reference to FIG.
FIG. 3 is a block diagram illustrating the configuration of the signal processing circuit of the cylinder lock 1. The signal processing circuit 40 includes a coil 41, a power supply circuit 42, a signal detection circuit 43, an arithmetic circuit 44, a storage circuit 45, a signal output terminal 46, and a power output terminal 47.
[0020]
The coil 41 is a loop antenna for receiving electromagnetic waves from an electronic key, and is a normal small planar coil. The coil 41 is provided in the vicinity of the keyhole 15. A voltage, that is, a signal is induced by the coil 41 by the electromagnetic wave from the electronic key inserted into the keyhole 15 and is input to the power supply circuit 42 and the signal detection circuit 43. The power supply circuit 42 rectifies and smoothes the voltage received by the coil 41 to obtain a direct current. The obtained direct current is input to the signal detection circuit 43 and the arithmetic circuit 44 and used as a power source for each circuit. Further, a part of the obtained direct current is output from the power output terminal 47 and used as a driving power source for the motor 27.
The signal detection circuit 43 is a circuit that detects, extracts, and amplifies a data signal from the signal received by the coil 41. The obtained data signal is input to the arithmetic circuit 44. In this embodiment, it is assumed that the data signal received from the electronic key is data obtained by encrypting the authentication code.
[0021]
The arithmetic circuit 44 calculates an authentication code from the data signal input from the signal detection circuit 43, compares the calculated authentication code with the authentication code stored in advance in the storage circuit 45, and calculates the calculated code. It is checked whether the authentication code of the electronic key is valid, that is, whether the electronic key is permitted to be locked / unlocked. The check result is output from the signal output terminal 46 to the motor device.
In this embodiment, since the received data is data obtained by encrypting the authentication code, the arithmetic circuit 44 decrypts the data signal input from the signal detection circuit 43 using predetermined key data, and performs comparison and verification. Get an authentication code to do.
Although the signal processing circuit 40 is not shown in the cross-sectional view of FIG. 1, the coil 41 is provided in the vicinity of the keyhole 15 at a position where the electromagnetic wave of the inserted electronic key can be received. Other circuits may be provided in any space in the inner cylinder 16.
[0022]
The motor device includes a control circuit (not shown) and a motor 27.
The control circuit inputs an authentication result from the signal output terminal 46 of the signal processing circuit, and when the authentication result is valid, operates the motor 27 in a predetermined direction for a predetermined time. If the authentication result is not valid, the control circuit does not operate the motor 27.
[0023]
The motor 27 is a DC motor for driving the coupling pin 23 operated by the control circuit. The motor 27 is driven by the power supplied from the power output terminal 47 of the signal processing circuit.
In addition, a spiral groove 29 is provided on the rotating shaft 28 of the motor 27. When the plate spring 24 is engaged with the spiral groove 29, the plate spring 24 is moved by the rotation of the motor 27, and the coupling pin 23 fixed to the plate spring 24 is also moved.
The predetermined time for operating the motor 27 is a time for the coupling pin 23 to move to a position protruding from the inner cylinder 16 to the extent that the clutch plate 31 can be stably latched.
The predetermined direction in which the motor 27 is rotated is a direction in which the spiral groove 29 is rotated so that the coupling pin 23 moves in a direction protruding from the inner cylinder 16.
In the cylinder lock 1 of the present embodiment, the movement of the connecting pin 23 is about 2 mm, the energization time to the motor 27 for the movement is about 0.2 seconds, and the power consumption is about 10 mW.
[0024]
Next, an operation of inserting an electronic key into the cylinder lock 1 of the present embodiment and opening and closing the lock will be sequentially described with reference to FIGS.
4A and 4B are diagrams showing a state in which the electronic key 50 is not inserted into the cylinder lock 1, wherein FIG. 4A is a top sectional view and FIG. 4B is a side sectional view.
5A and 5B are diagrams for explaining a state in which the electronic key 50 is inserted into the cylinder lock 1, wherein FIG. 5A is a top sectional view and FIG. 5B is a side sectional view.
6A and 6B are views for explaining a state in which the clutch mechanism of the cylinder lock 1 is connected and the lock can be opened and closed. FIG. 6A is a top sectional view and FIG. 6B is a side sectional view.
7A and 7B are views for explaining a state in which the electronic key 50 is removed from the cylinder lock 1, FIG. 7A being a top sectional view, and FIG. 7B being a side sectional view.
[0025]
As shown in FIG. 4, when the electronic key 50 is not inserted into the cylinder lock 1, the push plate 20 is held near the keyhole 15 by the spring 22. Since the leaf spring 24 is hooked by the bent portion of the key 21, this is also held on the keyhole 15 side. As a result, the coupling pin 23 fixed to the leaf spring 24 is stored in the inner cylinder 16. Has been.
Next, as shown in FIG. 5, when the electronic key 50 is inserted into the keyhole 15, the tip of the electronic key 50 pushes and moves the push plate 20 against the spring force of the spring 22, and is fixed to the push plate 20. The key 21 is moved. The leaf spring 24 is released from the hook and support by the bent portion and the inclined portion of the key bar 21. The leaf spring 24 receives the action of the magnetic force of the magnet 25 and the magnet 26 and receives a force in the direction of the rotating shaft 28 of the motor 27. As a result, the leaf spring 24 is engaged with the helical groove 29 of the motor 27, and the connecting pin 23 is connected to the drive state by the motor 27.
[0026]
In this state, when the motor 27 is operated based on the result of the authentication processing by the signal processing circuit, the leaf spring 24 moves along the spiral groove 29 as shown in FIG. The coupling pin 23 also moves together with the leaf spring 24, and the distal end portion of the coupling pin 23 protrudes outside from the opening 19 of the inner cylinder 16. Further, the protruding tip end of the coupling pin 23 moves into the opening 34 of the clutch plate 31 and latches the clutch plate 31. When the electronic key 50 is rotated in this state, the electronic key 50, the inner cylinder 16, and the clutch plate 31 that is hooked to the inner cylinder 16 by the coupling pin 23 rotate integrally, and the bolt drive shaft 30 is rotated to open and close the lock.
[0027]
When the opening / closing of the lock is completed and the electronic key 50 is removed, the push plate 20 is moved again toward the keyhole 15 by the spring force of the spring 22 as shown in FIG. The key bar 21 also moves in the direction of the keyhole 15, and the inclined portion gradually pushes the leaf spring 24. As a result, first, the plate spring 24 is released by meshing with the spiral groove 29, and then the plate spring 24 is hooked by the bent portion of the key bar 21 and moved toward the keyhole 15. The coupling pin 23 also moves, and is extracted from the opening 34 of the clutch plate 31 and stored in the inner cylinder 16. Finally, the connection between the motor 27 and the coupling pin 23 is released, and the connection between the clutch plate 31 and the inner cylinder 16 is also released.
[0028]
As described above, in the cylinder lock 1 of the present embodiment, the coupling pin 23 is driven and moved by the motor 27 to couple the inner cylinder and the clutch plate so that the lock can be opened and closed by human power. Therefore, since the motor is only for moving the pins, a small motor with low power consumption may be used. For this reason, the capacity of the power source may be small. For example, it can be driven by electric power supplied from an electronic key by electromagnetic waves, and a cylinder lock without a power source can be realized.
In addition, electronic locks that are finally opened and closed manually are the same as normal mechanical keys, so the user does not feel uncomfortable and the security of locking There is also an effect that can be obtained.
[0029]
The cylinder lock of the present invention is not limited to this example, and various modifications can be made.
For example, in the clutch mechanism of the present embodiment, the coupling pin is provided so as to advance and retract outward from the edge of the bottom surface facing the keyhole surface of the inner cylinder in parallel with the rotation axis of the inner cylinder. The clutch plate was a flat plate provided in parallel with the bottom surface so as to be hooked by the coupling pin. However, the coupling pin may be advanced and retracted to the outside from the side surface of the inner cylinder that is a rotating body, and may be any pin that protrudes outside from an area occupied when the rotating body is rotated. Also, the clutch plate can be hooked by the coupling pin, and may have various shapes corresponding to the coupling pin as long as it can be rotated integrally with the rotating body in the hooked state.
Further, the signal processing circuit of this embodiment may be provided integrally with the rotating body or may be provided outside the rotating body, and the installation location is not limited at all. If the rotation angle of the rotating body is determined, the signal transmission means when it is provided outside the rotating body can be a normal conductive wire, and even if there is no limitation on the rotation angle, an electric brush or the like can be used. It can be realized by a known technique.
[0030]
【The invention's effect】
According to the cylinder lock of the present invention, the only part that is electrically operated is to drive the coupling pin for engaging the inner cylinder and the clutch plate, and the actual lock is manually opened and closed. Therefore, an electronic lock that can be driven with very low power compared to the case where the lock is opened and closed electrically can be realized. Moreover, it was realizable with a small motor. Therefore, a small and low power consumption cylinder lock could be provided.
Further, since the coupling pin is driven by a motor, it is possible to provide a cylinder lock that is easy to adjust and install and operates stably.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view for explaining the structure of a cylinder lock of the present invention, wherein (A) is a top sectional view and (B) is a side sectional view.
2 is a view for explaining the structure of a connecting mechanism of the cylinder lock shown in FIG. 1; FIG.
FIG. 3 is a block diagram illustrating a configuration of signal processing means of the cylinder lock shown in FIG.
4A and 4B are views for explaining a state where the electronic key of the cylinder lock shown in FIG. 1 is not inserted, FIG. 4A is a top cross-sectional view, and FIG. 4B is a side cross-sectional view.
5A and 5B are views for explaining a state in which an electronic key is inserted into the cylinder lock shown in FIG. 1, wherein FIG. 5A is a top sectional view and FIG. 5B is a side sectional view.
6A and 6B are views for explaining a state where the cylinder lock shown in FIG. 1 can be locked and unlocked, in which FIG. 6A is a top sectional view and FIG. 6B is a side sectional view.
7A and 7B are views for explaining a state in which the electronic key of the cylinder lock shown in FIG. 1 is removed, wherein FIG. 7A is a top sectional view and FIG. 7B is a side sectional view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder lock 11 Outer cylinder 12 Outer cover 13 Base 14 Outer cylinder bottom face 15a Outer cylinder keyhole 16 Inner cylinder 17a-17c Inner cover 18 Inner cylinder bottom face 19 Opening part 15b Inner cylinder keyhole 15 Key hole 20 Push plate 21 Key bar 22 Spring 23 Connection Pin 24 Leaf springs 25, 26 Magnet 27 Motor 28 Rotating shaft 29 Helical groove 30 Bolt drive shaft 31 Clutch plate 32 Positioning spring 33 Click 34 Opening 40 Signal processing circuit 41 Coil 42 Power supply circuit 43 Signal detection circuit 44 Operation circuit 45 Storage circuit 46 signal output terminal 47 power output terminal 50 electronic key

Claims (4)

A cylinder lock that is locked and unlocked by a rotational force applied to an electronic key having an electronic circuit for transmitting authentication data,
A rotating body having a keyhole into which the electronic key is inserted, and being rotatable integrally with the rotation of the electronic key inserted into the keyhole;
Signal processing means for receiving the authentication data from the electronic circuit of the electronic key inserted into the keyhole and authenticating the electronic key;
A motor device that is provided on the rotating body and that rotates only when an authentication result in the signal processing means is valid;
A clutch mechanism that is coupled to the motor device and interlocks the rotation of the rotating body and the driving of a bolt that locks and unlocks the cylinder lock by driving the motor device;
When the electronic key is not inserted into the keyhole, it is held in the vicinity of the opening of the keyhole by a spring force, and when the electronic key is inserted into the keyhole, the electronic key is moved as the electronic key moves. A connecting mechanism for connecting or releasing the connection between the motor device and the clutch mechanism, which includes a pressing plate provided at the bottom of the keyhole and a crook that transmits the movement of the pressing plate and is accommodated in the rotating body; Have
The coupling mechanism is
When the electronic key is inserted the into the keyhole, the electronic key tip the motor device the key rod is moved by anti to pushes the push plate to the spring force and the clutch mechanism Concatenate,
When the electronic key is removed from the keyhole, together with the key bar is moved by hand the push plate to the spring force moves the keyhole opening direction uncoupling of the motor apparatus and the clutch mechanism A cylinder lock that releases the interlocking between the rotation of the rotating body and the driving of the bolt in the clutch mechanism. The signal processing means operates by receiving power from the electronic key,
The motor device is driven by electric power supplied from the electronic key.
The cylinder lock according to claim 1. The clutch mechanism includes a coupling pin that can move forward and backward with respect to the rotating body,
A shaft for driving the bolt for locking / unlocking is used as a rotation shaft, and is provided in the vicinity of a surface on which the coupling pin advances and retracts, and has an opening or a recess for latching the coupling pin. And a clutch plate that rotates in conjunction with the rotating body when the coupling pin is hooked in the opening or recess.
The cylinder lock according to claim 1 or 2. The signal processing means includes
Transmitting means for transmitting information to and from the electronic circuit of the electronic key;
Storage means for storing predetermined predetermined authentication data;
Computation means for performing authentication by comparing the authentication data received from the electronic circuit of the electronic key with the authentication data stored in the storage means,
The cylinder lock in any one of Claims 1-3.

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