JP2000352242A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic key type lock device capable of releasing a lock by a mechanical key and capable of avoiding becoming impossible to extract/remove the mechanical key. SOLUTION: When a lock cannot be released by an electronic key 20 due to a flat battery, a mechanical key is inserted into a key cylinder 1 to release engagement of a tumbler 6 and a sleeve 4 to release the lock by rotating the key cylinder 1. The sleeve 4 rotates together with the key cylinder 1 when using a immobile key as the mechanical key, in the case where dislocation is caused in the rotational direction from the key cylinder 1 in key returning operation, the sleeve 4 is returned to a former position by a sleeve returning means 30 to avoid becoming impossible to extract/remove the immobile key.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a locking device.

[0002]

2. Description of the Related Art Conventionally, as a lock device, for example, a steering lock device as shown in FIGS.

In FIG. 8, reference numeral 40 denotes a key cylinder;
Is a cylinder casing, and 42 is a stopper for engaging and disengaging a stopper 43 with an engagement groove 44 of the key cylinder 40.
The figure shows a key cylinder lock solenoid that locks and unlocks the rotation of 0.

A slider hole 46 is provided in the lower portion of the key cylinder 40 so as to pass through a key insertion hole 45, and a slider 47 is disposed in the slider hole 46 so as to be slidable in a direction perpendicular to the key insertion hole 45. It is.

A switch lever 49 is rotatably supported by a pin 50 in the bottom of the housing 48. One end of the switch lever 49 is urged upward by a spring 51 to push up the slider 47 by the end. Slider 4
The upper end of 7 protrudes into the key insertion hole 45.

In the bottom of the housing 48,
A key presence / absence detection switch 52 is provided with the operator 53 facing the other end of the switch lever 49, and the slider 47 is moved downward by inserting the insertion portion 55 of the electronic key 54 into the key insertion hole 45. And switch lever 4
At the other end of the switch 9, the pressing of the actuator 53 is released and the key presence / absence detection switch 52 is turned on.

The electronic key 54 has a predetermined identification code (ID).
Is stored, and an annular antenna coil 57 is externally fitted and fixed to the end of the housing 48.

The insertion portion 55 of the electronic key 54 is inserted into the key hole 4.
5 and the key presence / absence detection switch 52 is turned on, an electric field is generated in the antenna coil 57 by the control unit 60 shown in FIG. 9 to transmit and receive radio waves between the antenna coil 57 and the circuit chip 56. Then, the ID of the electronic key 54 is compared with the ID stored in the control unit 60, and only when the IDs match, a lock release signal is sent from the control unit 60 to the key cylinder lock solenoid 42 to lock the key cylinder 40. Is released, and a drive permission signal is sent to the drive control device 61 of the engine to enable the start of the engine.

That is, this conventional steering lock device enables the rotation of the key cylinder 40 only when the IDs match by the above-described ID collation, and enables the key cylinder 40 to rotate.
The steering lock is unlocked by the rotation of the key cylinder 40, and the ignition switch 62 is turned on by the rotation of the key cylinder 40 (starter switch operation).
Thus, the drive permission signal is transmitted to the drive control device 6.
1 to start the engine.
Keys other than the electronic key 54 prevent rotation of the key cylinder 40 and also start of the engine, thereby preventing theft of the vehicle.

[0010]

As described above, since the key cylinder 40 cannot be rotated by a key other than the specific electronic key 54, when power is not supplied to the electronic circuit such as when the battery is dead. In order to move the vehicle to a required position while unlocking the steering lock and securing the steering operation, the electronic key
In the case of No. 4, the steering lock cannot be unlocked, and it is undeniable that the emergency response becomes worse.

Therefore, according to the present invention, when power cannot be supplied to the electronic circuit such as when the battery is dead, the key cylinder can be rotated by a mechanical key to release the lock, and the emergency response can be satisfactorily performed. It is intended to provide a locking device that can perform the locking.

[0012]

According to the first aspect of the present invention, ID is collated by transmitting and receiving between a circuit chip built in an electronic key and emitting an electronic signal and a control unit on a key cylinder side. When the ID matches, a lock release signal is sent from the control unit to the key cylinder lock actuator to release the lock of the key cylinder, and the key cylinder is unlocked by a mechanical key that engages with the tumbler in the key cylinder. In the locking device, the key cylinder has a mechanical key insertion hole into which a mechanical key is inserted, and is rotatably inserted and arranged inside a sleeve rotatably provided in a cylinder casing. The key cylinder and the sleeve are A mechanical key is inserted into and removed from the insertion hole so that connection and disconnection can be performed via a tumbler. At the time of disconnection, the key cylinder can be rotated by a mechanical key. As an arrangement for engaging and disengaging the sleeve, the key cylinder can be rotated together with the sleeve when the key cylinder lock actuator is disconnected from the sleeve when the ID of the electronic key matches and when the key cylinder is connected to the sleeve. And, when the key cylinder is rotated by a mechanical key, when the sleeve is displaced in the rotational direction with respect to the key cylinder, the sleeve return means for correcting the displacement, the sleeve return means, Between the key cylinder and the sleeve Disposed instrumentation section, is characterized in that a return spring to hold the sleeve against the key cylinder at a fixed position in the rotational direction.

According to the second aspect of the present invention, the ID is collated by transmitting and receiving between a circuit chip built in the electronic key and emitting an electronic signal and the control unit on the key cylinder side. A lock release signal is sent from the control unit to the key cylinder lock actuator so that the lock of the key cylinder can be released, and the lock of the key cylinder can be released by a mechanical key that engages with a tumbler in the key cylinder. In the lock device, the key cylinder includes a mechanical key insertion hole into which a mechanical key is inserted, and is rotatably inserted and disposed inside a sleeve rotatably provided in a cylinder casing. A sleeve is a mechanical key inserted into the mechanical key insertion hole. The key cylinder and the sleeve can be connected and disconnected via a tumbler by inserting and removing the calckey. At the time of disconnection, the key cylinder can be rotated by a mechanical key. As an arrangement for engaging and disengaging the sleeve, the key cylinder can be rotated together with the sleeve when the key cylinder lock actuator is disconnected from the sleeve when the ID of the electronic key matches and when the key cylinder is connected to the sleeve. And when the key cylinder is rotated by a mechanical key, when the sleeve is displaced in the rotational direction with respect to the key cylinder, the sleeve returning means corrects the displacement. Pickpocket on the circumference of A stopper side edge parallel to the sleeve axis and a pin sliding contact guide edge formed at an appropriate opening angle in the circumferential direction from a deep end of the stopper side edge. A pin sliding contact groove formed substantially in a V-shape in plan view, a pin insertion hole provided at an end of the housing containing the key cylinder corresponding to the stopper side edge of the pin sliding contact groove, and a sleeve. And a displacement correction pin that is inserted from the pin insertion hole and engages with the pin sliding contact groove when the displacement is corrected.

[0014] According to the third aspect of the present invention,
The key cylinder described in (1) is characterized in that an electronic key insertion hole is formed, and a mechanical key insertion hole is formed following the inner part thereof.

According to a fourth aspect of the present invention, a detector of an electronic signal emitted from the electronic key according to the third aspect is arranged at an end of a key cylinder.

[0016]

According to the first aspect of the present invention, the key cylinder is provided with a mechanical key insertion hole, and the sleeve is provided with a sleeve on which a tumbler is engaged and removed by inserting and removing the mechanical key. Since the lock solenoid is configured to be disengaged, the mechanical key can be inserted even if the key cylinder lock solenoid cannot be unlocked by the electronic key due to a dead battery or the key cylinder rotation cannot be released. If a mechanical key is inserted into the hole, the sleeve and the tumbler will be disengaged from each other and the key cylinder will be free to rotate.The mechanical key can be used to rotate the key cylinder to unlock the steering lock. Can be handled.

Further, when a so-called double key having a circuit chip similar to that of an electronic key is prepared as a mechanical key or the electronic key is within a range in which the control unit can transmit and receive, the mechanical key is used. When the key cylinder is rotated by a mechanical key such as the double key when the key cylinder is used, the key cylinder lock actuator is unlocked due to the matching of the ID check between the double key or a separate electronic key circuit chip and the control unit. Because the rotation of the sleeve is made free by this,
Depending on the degree of contact between the key cylinder and the sleeve, the sleeve rotates with the rotation of the key cylinder, and even when the key cylinder is returned to the original locked position, the sleeve is displaced in the rotational direction, and the engagement between the tumbler and the sleeve is caused. There is a possibility that the joint operation becomes impossible and it is impossible to remove the mechanical such as the double key, but if the sleeve is misaligned in the rotational direction with respect to the key cylinder, the sleeve return means Since the position can be corrected, it is not impossible to remove a mechanical key such as a double key, and the degree of freedom of a key to be used can be expanded.

Since the sleeve returning means is constituted by a return spring disposed at a fitting portion between the key cylinder and the sleeve, the sleeve is always held at a fixed position in the rotational direction with respect to the key cylinder. With a simple structure, the displacement of the sleeve can be automatically corrected.

According to the second aspect of the present invention, when the sleeve is displaced and a mechanical key such as a double key cannot be removed, a correction pin is inserted from the pin insertion hole at the end of the housing. When the tip of the pin abuts against the inclined pin sliding guide edge of the pin sliding groove provided on the sleeve peripheral surface, the pin sliding contact edge slides against the correction pin end due to the inclination, and the sleeve rotates. Since the stopper side edge is engaged with the correction pin, the sleeve can be returned to the original proper position. Therefore, the displacement of the sleeve can be easily corrected manually, and a dedicated part as the sleeve return means is provided. Need not be incorporated in the key cylinder, the structure can be simplified and the cost can be advantageously obtained.

According to the third aspect of the invention, in addition to the effects of the first aspect of the invention, even in the case of an electronic key, the key cylinder is rotated by the same operation as the mechanical key. It can be operated and does not cause an uncomfortable feeling to the operator.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, the electronic signal generated from the electronic key may be weak, and if the electronic key reacts when it is in the electronic key insertion hole. Therefore, the size of the device including the electronic key does not increase.

[0022]

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

In FIGS. 1 and 2, 1 is a key cylinder, 2
Is a cylinder casing, 3 is a housing to which the cylinder casing 2 is fixed, and the key cylinder 1 is rotatably inserted and arranged inside a sleeve 4 rotatably provided inside the cylinder casing 2.

The key insertion hole 5 of the key cylinder 1 includes an electronic key insertion hole 5A into which an insertion portion 21 of an electronic key 20 (see FIG. 4A) described later is inserted, and the electronic key insertion hole 5A.
The key cylinder 1 is provided with a mechanical key insertion hole 5B associated with the mechanical key insertion hole 5B.
A plurality of tumblers 6 are provided, which are immersed and protruded from the peripheral surface by insertion and removal of the mechanical key 25 (see FIG. 4B).

In this embodiment, the electronic key insertion hole 5A
The exact notation here is "hole height", that is, the length in the direction perpendicular to the key insertion axis in FIG. ), The diameter of the mechanical key insertion hole 5B is smaller.

Since the relationship between the mechanical key 25 and the tumbler 6 is the same as that of the ordinary key cylinder mechanism, a detailed description is omitted here.

As shown in FIG. 3, a tumbler engaging groove 7 for engaging and disengaging the tumbler 6 is formed on the inner peripheral surface of the sleeve 4.
The engagement and disengagement of the tumbler 6 and the tumbler locking groove 7 connects and disconnects the sleeve 4 and the key cylinder 1.

Numeral 8 denotes a solenoid as a key cylinder lock actuator disposed in the upper part of the housing 3, and the key cylinder lock solenoid 8 has a stopper 9
Is engaged with and disengaged from the lock groove 10 provided in the sleeve 4 to lock and unlock the rotation of the sleeve 4.

A key presence / absence detection switch 11 for detecting whether or not a key is inserted into the key insertion hole 5 of the key cylinder 1 is provided in a lower portion of the housing 3.

A slider hole 13 is provided in the lower portion of the key cylinder 1 so as to pass through an intermediate position of the electronic key insertion hole 5A, and the slider 12 is slid in the slider hole 13 in a direction perpendicular to the electronic key insertion hole 5A. It is movably arranged.

A switch lever 14 is pivotally supported by a pin 15 in the lower portion of the housing 3.

The switch lever 14 urges one end of the switch lever 14 upward by a spring 16, and the end of the switch lever 14
To move the upper end of the slider 12 into the electronic key insertion hole 5.
A, the insertion portion 2 of the electronic key 20
1 is inserted into the electronic key insertion hole 5A or the mechanical key 25 is inserted into the mechanical key insertion hole 5B, so that the switch lever 14 is moved downward.
At the other end, the pressing of the operator 17 of the key presence / absence detection switch 11 is released, and the key presence / absence detection switch 11 is turned on.

The insertion portion 21 of the electronic key 20 is formed with a concave portion 22 to which the tip of the slider 12 engages and disengages. When the insertion portion 21 is completely inserted into the electronic key insertion hole 5A, the slider 12 is inserted into the concave portion 22. Are engaged so that the electronic key 20 can be prevented from coming off.

When the electronic key 20 or the mechanical key 25 rotates, the lower end of the slider 12 is opposed to the inner peripheral surface of the cylinder casing 2 instead of the end of the switch lever 14. The return of the key 12 is prevented, so that the electronic key 20 or the mechanical key 25 does not come off except for the locked position of the key cylinder 1.

The electronic key 20 has a predetermined identification code (ID).
Is stored, and an annular antenna coil 18 is externally fixed to the end of the housing 3.

Since the electrical circuit configuration in this embodiment is the same as the conventional configuration shown in FIG. 9, the drawing symbols of the corresponding components in this embodiment are also shown in FIG.

Reference numeral 30 denotes a position in which the sleeve 4 is rotated relative to the key cylinder 1 when the key cylinder 1 is rotated from the engine start position to the locked position by a mechanical key 25A (see FIG. 4C). This figure shows a sleeve return means for correcting a shift when it occurs. In the present embodiment, a coil-shaped return spring 31 is shown.
Is used.

The return spring 31 is disposed in the fitting portion of the key cylinder 1 and the sleeve 4 so as to be inserted through the key cylinder 1, and one end of the coil winding stop end is engaged and fixed to the locking groove 1 a on the outer periphery of the key cylinder 1. On the other hand, the other end is engaged and fixed to the locking hole 4a of the sleeve 4, so that the sleeve 4 is held at a fixed position in the rotation direction with respect to the key cylinder 1.

That is, the return spring 31 always transmits the rotation of the key cylinder 1 to the sleeve 4.

In FIG. 1, reference numeral 26 denotes a shutter, and 27 denotes a cylinder cap.

According to the configuration of the above embodiment, the engine is started by the electronic key 20 in a normal state.

When the insertion portion 21 of the electronic key 20 is inserted into the electronic key insertion hole 5A of the key cylinder 1, the slider 1
2 is moved down, the key presence / absence detection switch 11 is turned on, and the control unit 60 controls the antenna coil 1
8 to generate an electric field.

Thus, the circuit chip 2 of the electronic key 20
Radio waves are transmitted and received between the antenna 3 and the antenna coil 18. The ID stored in the circuit chip 23 and the ID stored in the control unit 60 are collated. A drive permission signal is generated, and a lock release signal is sent from the control unit 60 to the key cylinder lock solenoid 8, and the stopper 9 is moved from the state shown in FIG. 3A to the lock groove 10 as shown in FIG. Remove and unlock the sleeve 4.

At this time, the end of the tumbler 6 of the key cylinder 1 is connected to the tumbler spring 6a as shown in FIG.
When the electronic key 20 is rotated, the key cylinder 1 is rotated integrally with the sleeve 4 to unlock the steering lock (not shown). When the ignition switch 62 is turned on (starter switch is operated) by the rotation of the key cylinder 1, the drive permission signal is sent from the control unit 60 to the engine drive control device 61 to start the engine.

Here, when the power supply to the control unit 60 is disabled due to a dead battery or the like, the key cylinder lock solenoid 8 cannot be unlocked by the electronic key 20, so that the steering lock is locked. Steering operation becomes impossible with the vehicle left.

In such a case, if the mechanical key 25 shown in FIG. 4B is inserted into the mechanical key insertion hole 5B of the key cylinder 1, the tumbler 6 is immersed in the key cylinder 1 as shown in FIG. Then, the engagement with the sleeve 4 whose rotation is locked by the key cylinder lock solenoid 8 is released, and the rotation of the key cylinder 1 is made free.

Therefore, the key cylinder 1 can be rotated by the mechanical key 25 to unlock the steering lock (not shown), and the steering operation can be performed. Can be handled.

Here, as shown in FIG. 4C, a circuit chip 23 similar to the circuit chip 23 used in the electronic key 20 is provided on the mechanical key head as a spare mechanical key. Imobiki 25 as a so-called double key with both key and electronic key functions
A is prepared, or the electronic key 20 is close to the antenna coil 18 of the control unit 60 and the ID is
If the mechanical key 25 is used in spite of being within the signal transmission / reception range, the immobility key 25 is used.
A. When the mechanical key 25 is used for starting the engine other than in an emergency such as when the battery has run out, the key cylinder 1 and the sleeve 4 may not be able to be removed due to a rotational displacement. .

That is, when the key cylinder 1 is rotatable by the mechanical key 25 as described above, if a mechanical key such as the immobilizer 25A prepared as a spare key is used for starting the engine other than in an emergency, the immobilizer 25A or the like is used. 3 is inserted into the mechanical key insertion hole 5B of the key cylinder 1 as shown in FIG.
As shown in (1), the engagement between the tumbler 6 and the sleeve 4 is released and the rotation of the key cylinder 1 is made free. However, the slider 12 of the key presence / absence detection switch 11 is pushed in the process of inserting the mechanical key such as the immobilizer 25A. The key presence / absence detection switch 11 is turned on, and the antenna coil 18
Then, the ID collation is started between the immobilizer 25A and the circuit chip 23 of the nearby electronic key 20, and the key cylinder lock solenoid 8 releases the lock to make the rotation of the sleeve 4 free.

For this reason, if the key cylinder 1 is rotated in the engine starting direction by a mechanical key such as the immobilizer 25A, the sleeve 4 may be pulled and rotated in the same direction depending on the friction between the key cylinder 1 and the sleeve 4. When the key cylinder 1 is rotated to the original lock position for stopping the engine in this state, the sleeve 4 is displaced in the rotational direction, and the sleeve 4 is properly adjusted to the original lock position as shown in FIG. There is a possibility that it will not return to. In such a case, it becomes impossible to remove the mechanical key such as the immobilizer 25A or the like, so that it is necessary to repeat the rotation operation of the key cylinder 1 several times to return the displacement of the sleeve 4, resulting in a use problem.

However, according to the configuration of the present embodiment, the sleeve 4 is always held at a fixed position in the rotation direction with respect to the key cylinder 1 by the return spring 31 as the sleeve return means 30, so that the above-mentioned state is achieved. Even if the sleeve 4 is displaced in the rotational direction with respect to the key cylinder 1, the return spring 31 immediately returns to the original lock position and the displacement is automatically corrected, so that the immobilizer 25A is removed. Can be performed, and the degree of freedom of the use key can be expanded.

When the key cylinder 1 is rotated only by the mechanical key 25, the rotation of the sleeve 4 is prevented by the lock solenoid 8, so that the operation of the return spring 31 by the reaction force is somewhat heavy. The use of 25 is an emergency and does not cause much problem.

5 to 7 show different examples of the sleeve returning means 30. FIG.

In the second embodiment, the sleeve 4 is fitted to the large-diameter portion at the end of the key cylinder 1, and a pin sliding contact groove 32 is formed on the outer peripheral surface of the end of the sleeve 4.

The pin sliding contact groove 32 is provided from the end face side of the sleeve 4 and has an appropriate opening angle in the circumferential direction from a stopper side edge 32a parallel to the sleeve axis and a rear end of the stopper side edge 32a. It has a pin sliding contact guide edge 32b formed in an inclined manner, and is formed in a substantially V shape in plan view.

On the other hand, a pin insertion hole 33 is provided at an end of the housing 3 at a position corresponding to the stopper side edge 32a of the pin sliding contact groove 32 at the locked position of the sleeve 4,
A displacement correction pin 34 is inserted from the pin insertion hole 33 so that the displacement of the sleeve 4 can be corrected.

That is, in the configuration of the second embodiment, when the mechanical key such as the immobilizer 25A is used for starting the engine as described above, the sleeve 4 is displaced in the rotational direction with respect to the key cylinder 1. When the mechanical key, such as the immobilizer 25A, cannot be pulled out and removed, a position shift correcting pin 34 is inserted from the pin insertion hole 33, and its tip is provided in a pin sliding contact groove provided on the outer peripheral surface of the sleeve 4. 32, the pin sliding contact guide edge 3b against the end of the correction pin 34.
The sleeve 4 is rotated by the inclination of the sleeve 2b, and the stopper side edge 32a is engaged with the correction pin 34, so that the sleeve 4 is returned to the original proper position.

Therefore, the displacement of the sleeve 4 can be easily corrected manually and there is no need to incorporate a dedicated part as the sleeve return means 30 into the key cylinder 1, so that the structure can be simplified. And can be advantageously obtained in terms of cost.

Although the pin sliding contact groove 32 is provided on the outer peripheral surface of the sleeve 4 in the above embodiment, it is needless to say that the groove may be provided on the inner peripheral surface.

In the above-described embodiment, the circuit chip 23 of the electronic key 20 transmits and receives an electronic signal as an ID signal by radio waves. However, the present invention is not limited to this, and an electromagnetic wave such as infrared rays may be used as a signal carrier for transmission and reception. Available.

The steering lock device in an automobile has been described as an example. However, the present invention is not limited to this. For example, a common door of an apartment house (auto door: unlocked by an electronic key), a door of each dwelling (an electronic key or a mechanical key) Locks for unlocking and unlocking), locks for safes, and the like may be used. Further, the present invention may be applied to a lock device in which a mechanical key is used as a master key used in an emergency and an electronic key is used as a general key.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional explanatory view showing a portion where a sleeve return means is provided in the embodiment.

FIG. 3 is an operation diagram showing a relationship between a key cylinder and a sleeve according to the embodiment.

FIG. 4 is an explanatory view showing an electronic key and a mechanical key.

FIG. 5 is an explanatory sectional view showing a main part of a second embodiment of the present invention.

FIG. 6 is a view taken in the direction of arrow A in FIG. 5;

FIG. 7 is a plan view showing a pin sliding contact groove forming portion of the key cylinder of the embodiment.

FIG. 8 is a sectional view showing a conventional structure.

FIG. 9 is a block circuit diagram of the conventional structure.

[Explanation of symbols]

 Reference Signs List 1 key cylinder 2 cylinder casing 3 housing 4 sleeve 5 key insertion hole 5A electronic key insertion hole 5B mechanical key insertion hole 6 tumbler 8 key cylinder lock solenoid 18 antenna coil 20 electronic key 23 circuit chip 25, 25A mechanical key 30 sleeve return means 31 return Spring 32 Pin sliding contact groove 32a Stopper side edge 32b Pin sliding contact guide edge 33 Pin insertion hole 34 Misalignment correction pin

Claims (4)

[Claims] An ID is verified by transmitting and receiving between a circuit chip which is built in an electronic key and emits an electronic signal and a control unit on a key cylinder side, and when the ID matches, the control unit sends the key cylinder lock actuator to the key cylinder lock actuator. In a lock device configured to be capable of releasing a lock of a key cylinder by sending a lock release signal, and to be capable of releasing a lock of a key cylinder by a mechanical key that engages with a tumbler in the key cylinder, the key cylinder includes: A mechanical key insertion hole into which a mechanical key is inserted is provided, and is rotatably fitted inside a sleeve rotatably provided in a cylinder casing. The key cylinder and the sleeve are provided with the mechanical key insertion hole. Insert and remove the mechanical key into the hole. The key cylinder is rotatable by a mechanical key when the connection is released, and the key cylinder lock actuator and the sleeve are disengaged and disengaged. The key cylinder is rotatable together with the sleeve when the key cylinder lock actuator is disconnected from the sleeve and the key cylinder and the sleeve are connected when the electronic key ID matches, and the key cylinder is rotated by a mechanical key. When the sleeve is displaced in the rotational direction with respect to the key cylinder, the sleeve return means corrects the displacement. The sleeve return means is disposed at a fitting portion between the key cylinder and the sleeve. , Sleeve Locking device being characterized in that a return spring is held in position in the rotational direction relative to Sunda. 2. A transmission / reception between a circuit chip built in an electronic key and emitting an electronic signal and a control unit on a key cylinder side to verify an ID, and when the ID matches, the control unit sends the key cylinder lock actuator to the key cylinder lock actuator. In a lock device configured to be capable of releasing a lock of a key cylinder by sending a lock release signal, and to be capable of releasing a lock of a key cylinder by a mechanical key that engages with a tumbler in the key cylinder, the key cylinder includes: A mechanical key insertion hole into which a mechanical key is inserted is provided, and is rotatably fitted inside a sleeve rotatably provided in a cylinder casing. The key cylinder and the sleeve are provided with the mechanical key insertion hole. Insert and remove the mechanical key into the hole. The key cylinder and the sleeve can be connected and disconnected via a tumbler, and the key cylinder can be rotated by a mechanical key when the connection is released. Further, the key cylinder lock actuator and the sleeve are disengaged. As an arrangement, the key cylinder is rotatable together with the sleeve when the key cylinder lock actuator and the sleeve are disconnected from each other in a state where the IDs of the electronic keys match, and when the key cylinder and the sleeve are connected, the key cylinder is rotatable. Sleeve return means for correcting a displacement of the sleeve in the rotational direction with respect to the key cylinder when the sleeve is rotated by a mechanical key. Provided from A stopper side edge parallel to the sleeve axis and a pin sliding contact guide edge formed at an appropriate opening angle in the circumferential direction from a rear end of the stopper side edge and substantially V-shaped in plan view. A pin sliding contact groove formed in the shape of a pin, a pin insertion hole provided at an end of the housing containing the key cylinder corresponding to the stopper side edge of the pin sliding contact groove, and inserting the pin when correcting a displacement of the sleeve. 2. The locking device according to claim 1, further comprising: a misalignment correction pin inserted from the hole and engaged with the pin sliding contact groove. 3. The key cylinder according to claim 1, wherein an electronic key insertion hole is formed in the key cylinder, and a mechanical key insertion hole is formed following the inner part of the electronic key insertion hole.
The locking device according to the paragraph. 4. The lock device according to claim 3, wherein a detector for detecting an electronic signal emitted from the electronic key is disposed at an end of the key cylinder.