JPH11333113A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device which does not allow unlocking by a key made by simply tracing the shape of a mother key and has high security. SOLUTION: This locking device has a lock main body 6 with rotatable member 17 rotated by an inserted key 15, a lock member 18 to inhibit rotation of the rotatable member 17 in the unlocking direction, an actuator 21 for an electromagnetic solenoid, etc., to drive and move the lock member 18 to the lock release position, detecting means for a lead switch, etc., to detect a detected body 27 such as a magnet 27, etc., equipped on the key 15. When the detecting means detected insertion of the detected body 27, the actuator 21 acts to unlock the lock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device having an unlocking prevention function.

[0002]

2. Description of the Related Art Conventionally, as a locking device having an unlocking prevention function, for example, a locking device disclosed in Japanese Patent Application Laid-Open No. 7-293057 is known.

The unlocking prevention means used in this conventional locking device is configured such that the interlock between the rotation axis of the cylinder lock and the lock member can be switched on and off by an electromagnetic solenoid. By operating the electromagnetic solenoid so as to cut off the interlock between the shaft and the lock member, even if the rotation shaft of the cylinder lock is rotated with a simulated key, the rotation shaft only idles and the lock member is rotated. When the unlocking is necessary, the rotating shaft and the lock member are linked to each other by an electromagnetic solenoid, and then the cylinder lock is rotated by rotating the lock shaft. The member can be rotated in the unlocking direction.

[0004]

According to the above-mentioned unlocking prevention means, if the electric control means of the electromagnetic solenoid is known, the unlocking operation can be easily performed with a dummy key, and it is not sufficient in security. It was hard to say.

The present invention has been made in view of such a point, and it is an object of the present invention to provide a locking device excellent in security that cannot be unlocked with a simulated key which only traces the shape. And

[0006]

In order to achieve the above object, the present invention has the following configuration.

That is, the locking device according to the first aspect of the present invention provides a lock body having a rotating member that can be rotated by an inserted key, and prevents the rotating member from rotating in the unlocking direction. A lock member, an actuator for driving and displacing the lock member to an unlock position, and a detection unit for detecting a detection target of a specific material constituting at least a part of the key, wherein the detection unit detects the detection target. When the insertion is detected, the actuator is unlocked.

According to a second aspect of the present invention, in the locking device according to the first aspect, the object to be detected is a magnet,
The detecting means is constituted by a magnetic detecting element.

According to a third aspect of the present invention, in the locking device according to the first or second aspect, the rotating member is rotatable in a forward or reverse direction from a neutral position. Unlocks the locking mechanism of
The locking mechanism is configured to be unlocked, and the lock member is configured to prevent only rotation of the rotation member to one side.

According to the first aspect of the present invention, in the locked state, the turning member is prevented from turning in the unlocking direction by the lock member, and the turning member is operated with the imitation key. It is not possible. When the regular key is inserted into the lock body, the detection object provided on the key is detected by the detecting means, and the actuator moves the lock member to the unlock position, and the unlocked rotating member moves in the unlock direction. Is allowed to rotate.

According to the configuration of the invention according to the second aspect, for example, a magnet is buried in a regular key, and a magnetic detecting element such as a reed switch is provided in the lock, so that the regular key is provided. Can be easily recognized by the reed switch.

According to the configuration of the third aspect of the invention, when two types of locking mechanisms are operated by reversing the operation of one key,
The first locking mechanism, which is particularly important, is prevented from being unlocked by the lock member, so that the first locking mechanism can be unlocked even if a dummy key whose shape is traced is used. Becomes impossible.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a locking device for a front door and a rear door of a pachinko game console will be described below with reference to the drawings.

FIG. 1 is a front view of the pachinko gaming table, and FIG.
Then, the rear side of the door is shown in FIG.
FIG. 4 is a rear view showing the locked state.

In this pachinko gaming machine, a rear door 2 provided with a game board is supported by a hollow frame 1 of a hollow frame so that it can swing open and close about a fulcrum a on a left end thereof. A front door 3 made of transparent glass is provided on the front surface of the rear door 2 so as to be swingably openable and closable about a fulcrum b at the left end thereof. The device A is provided at the right end of the rear door 2.

The locking device A includes a first locking mechanism for fixing the rear door 2 at a closed position with respect to the underframe 1 and a front door 3 at a closed position with respect to the rear door 2 as described later. A second locking mechanism for fixing is provided, and a cylinder-type lock body commonly used for these is provided.

A key rod 7 is attached along the right side of the rear surface of the rear door 2 and a vertical wall 7 continuously provided from the key rod 7.
A hook member 8 is pivotally mounted on the vertical wall 7a so as to be rotatable up and down around a fulcrum c.
An operating rod 9 is mounted slidably up and down. The first operating rod 9 is slid downwardly by a spring 10, and the end of the first operating rod 9 and each hook member 8 are linked with a pin, thereby urging the first operating rod 9 downward. Each hook member 8 is rotated downward with the movement, and the frame 1
Side of the rear door 2
Is fixed to the closed position with respect to the underframe 1, and when the first operating rod 9 is moved upward against the spring 10, each hook member 8 is rotated upward, and the rear door 2 is moved to the underframe. 4 so as to be able to swing open.
Is constituted.

A second operating rod 11 is vertically slidably mounted so as to be sandwiched between the vertical wall portion 7a of the key rod 7 and the first operating rod 9, and is urged upward by a spring 12 to be slid upward. ing. The second operating rod 11 is provided with an operating projection 14 that engages with the front door opening / closing lever 13. When the second operating rod 11 is slid upward, the operating projection 14 moves upward. When the front door 3 is retracted and fixed to the closed position with respect to the rear door 2 and the second operation rod 11 is moved downward against the spring 12, the operation projection 14 moves the front door opening / closing lever 13 downward. To the front door 3 and the rear door 2
So that it can be swung open to
Is configured.

As shown in FIG. 7, the cylinder-shaped lock main body 6 is buried in the rear door 2 and has a pivot shaft 16 which is pivotally operated by a key 15 inserted from the front face.
And is projected to the rear surface side of the rear door 2, and a pivoting member 17 for unlocking operation is connected to the projected end. As shown in FIG. 4, a first operating arm 17a that engages with an engaging hole 9a of the first operating rod 9 is provided on the rotating member 17.
And a second operation arm 17b that engages with the engagement hole 11a of the second operation rod 11 are connected to each other.
7 is rotated in the counterclockwise direction in FIG.
As shown in FIG. 7, the first operation rod 9 is slid upward by the first operation arm 17a in the unlocking direction.
When the rotating member 17 is rotated clockwise in the drawing, as shown in FIG. 6, the second operating rod 11 is slid downward by the second operating arm 17b in the unlocking direction. Has become.

Further, on the back surface of the rear door 2 shown in FIG.
As shown in the exploded perspective view of FIG. 9 and the perspective view of FIG. 10, a lock member 18 for preventing the rotation member 17 from rotating counterclockwise is provided. This lock member 1
Reference numeral 8 denotes a pin made of a magnetic metal such as iron supported on a bracket 19 made of a non-magnetic material so as to be slidable back and forth. The bracket 19 has an electromagnetic solenoid 2 having the lock member 18 as a core.
When the electromagnetic solenoid 21 is energized and excited, the lock member 18 is displaced against the spring 20 and the engagement with the rotating member 17 is released.

A screw 22 made of a magnetic metal is mounted on the tip of the rotating shaft 16, and a reed switch 23 which is in close proximity to the screw 22 is mounted on the bracket 19 via a substrate 24. The electromagnetic solenoid 21 and the reed switch 23 are connected to the control device 25, respectively.
When the reed switch 23 detects a magnetic substance and switches on, the electromagnetic solenoid 21 is energized and excited. A cover 26 is externally mounted on the bracket 19, the electromagnetic solenoid 21, and the like, as shown in FIG.

On the other hand, as shown in FIG. 7, a magnet 27 is buried as an object to be detected at the tip of the key 15, and as shown in FIG. 8, the key 15 is correctly inserted into the lock body 6. Then, the magnetic force of the magnet 27 embedded at the tip acts on the reed switch 23 via the screw 22 made of a magnetic metal, and when the insertion of the key 15 is detected as described above, the electromagnetic solenoid 21 is energized and excited. The lock member 18 is driven backward to allow the rotation member 17 to rotate counterclockwise. When the magnet 27 has a strong magnetic force, the screw 22 is not necessarily made of a magnetic metal. Further, instead of embedding the magnet 27, the key 15 itself may be made of a magnetic metal material.

Therefore, when the regular key 15 is inserted into the lock body 6, the turning member 17 can be turned in both forward and reverse directions. The second locking mechanism 5 for the front door 3 can be unlocked,
When the rotating member 17 is rotated in the counterclockwise direction, the first locking mechanism 4 for the rear door 2 can be unlocked.

The present invention can be implemented in the following modes.

As shown in FIG. 11, a projection 15 a penetrating through the rotating shaft 16 is formed at the tip of the key 15,
The magnet 27 is embedded in the projection 15a, and the reed switch 2
3 may act directly.

As shown in FIG. 12, a first locking mechanism 4 acting on the rear door 2 is provided with an engagement piece 33 which can be extended and retracted to the rear door 2 via a guide 31 and is projected and urged by a spring 32. An engagement hole 34 formed in the underframe 1 to engage the engagement piece 33
The engaging piece 33 may be configured to be displaced backward by rotating the first operating arm 17a of the rotating member 17 in the counterclockwise direction. In this case, the front door opening / closing lever 13 can be directly operated by the second operation arm 17b of the rotating member 17.

At the tip of the key 15, a magnetic metal such as an iron piece is buried as an object to be detected, or the key is made of a magnetic metal material, and this is detected by a proximity switch to detect the insertion of a legitimate key. It is also possible to configure means for performing the above.

A resin material having a predetermined capacitance is provided at the tip of the key 15 as an object to be detected, and this is detected by a capacitance-type proximity switch. It can also be configured.

[0029]

As is apparent from the above description, according to the present invention, the following effects can be expected.

According to the first aspect of the present invention, the lock of the rotating member cannot be released unless a regular key having the object to be detected of a specific material is inserted, so that it is difficult to imitate the key. And security can be improved.

According to the second aspect of the present invention, since the magnet is a detection target of a specific material and is detected by a magnetic detection element such as a reed switch, the detection target and the detecting means can be reduced in size, and the locking device can be reduced. This is effective for downsizing.

According to the third aspect of the present invention, when two types of locking mechanisms are operated by reversing the operation of one key, the first locking mechanism, which is particularly important, is prevented from being unlocked by the locking member. By doing so, it is possible to prevent the unlocking of the first locking mechanism even if a dummy key whose shape is traced is used.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a pachinko gaming table.

FIG. 2 is a perspective view of the rear door as viewed from the back.

FIG. 3 is an exploded perspective view of members constituting a locking mechanism.

FIG. 4 is a rear view showing the locking device in a locked state.

FIG. 5 is a rear view showing a state in which a first locking mechanism for the rear door is unlocked.

FIG. 6 is a rear view of a state where a second locking mechanism for the front door is unlocked.

FIG. 7 is a partially cutaway side view showing the locking device in a locked state.

FIG. 8 is a partially cutaway side view showing the locking device in the unlocked state.

FIG. 9 is an exploded perspective view showing an operation portion of the locking device.

FIG. 10 is a perspective view showing an operation part of the locking device.

FIG. 11 is a partially cutaway side view showing a locking device according to another embodiment.

FIG. 12 is a front view showing a locking device of still another embodiment.

[Explanation of symbols]

 4 First Locking Mechanism 5 Second Locking Mechanism 6 Lock Body 15 Key 17 Rotating Member 18 Locking Member 21 Actuator (Electromagnetic Solenoid) 23 Reed Switch 27 Detected Object

Claims (3)

[Claims] 1. A lock body having a rotating member rotatable by an inserted key, a lock member for preventing the rotating member from rotating in an unlocking direction, and unlocking the lock member. An actuator for driving and displacing the key to a position; and detecting means for detecting an object to be detected of a specific material constituting at least a part of the key, and locking the actuator when the detection means detects the insertion of the object to be detected. A locking device that is released. 2. The locking device according to claim 1, wherein said object to be detected is a magnet, and said detecting means is constituted by a magnetic detecting element. 3. The rotating member is rotatable in a forward or reverse direction from a neutral position, and the first locking mechanism is unlocked by turning to one side, and the second locking mechanism is turned by turning to the other side. 3. The locking device according to claim 1, wherein the locking member is configured to be unlocked, and the lock member is configured to prevent only rotation of the rotation member to one side. 4.