JP2002276212A - Unlocking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illicit release preventive unlocking device capable of arranging a key hole in a position not visually confirmable or a position not touchable by a hand and inserting a key to the key hole. SOLUTION: A square cylinder-like key holder 11 having the key 3 arranged in a key housing position PH is inserted to the insert hole 6 of a door 5 from the out-room RO side. When a key presser part 12 is pulled to the out-room RO side along a key presser guide part, the head part of the key 3 inserted to the in-room RI side is released, and the key 3 is tilted from the key housing position PH to a key hole insert position PV by a compression coil sprint 15. The key 3 moved in the position opposed to the key hole is inserted to the keyhole of a lock device 2 by holding and pulling a key holder 11 from the out-room RO side. Since this unlocking device 1 is released by inserting the key 3 to the key hole, the door 5 can be opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unlocking device for preventing unauthorized unlocking due to picking.
The present invention relates to an unlocking device that unlocks a locked locking device that is arranged at a position where it cannot be seen.

[0002]

2. Description of the Related Art Generally, illegal unlocking by picking is
It is said that this is easily performed by inserting or exploring the keyhole with a special tool or a thin rod-shaped material such as a wire.
A conventional locking device for preventing this unauthorized unlocking is known from Japanese Patent Application Laid-Open No. 8-128247. According to this publication, as shown in FIG.
Is constituted by a cylinder lock mechanism including a fixed outer cylinder 32, a rotatable inner cylinder 33, and a tumbler, and an engaging head 34 at the tip of the inner cylinder 33 is formed as an elongated projection. The inner cylinder 33 including the engaging head 34 is configured to be rotated by a key inserted into the protruding piece. As a result, the door 35 is half-opened, and as a key function that can be unlocked from the room side of the door 35 with a key from the gap of the door 35, illegal unlocking by picking is prevented.

[0003]

However, since it is said that a group of professionals who unlock illegally can see the keyhole and can pick it by touching it with their hands, the Even when the door 35 is in the half-open state, the keyhole can be touched by hand from the half-opened gap, so that unauthorized unlocking could not be completely prevented.

SUMMARY OF THE INVENTION [0004] The present invention solves the above-mentioned problem, and arranges a keyhole at a position where the keyhole is invisible so that a key can be inserted into the keyhole, thereby preventing an unauthorized unlocking. It is an object to provide a locking device.

[0005]

An unlocking device according to the present invention is configured as follows to solve the above-mentioned problems. That is, an unlocking device configured so that a key can be inserted into a keyhole of a locked locking device,
A key holder having support means for supporting the key and movement guide means for moving and guiding the key to the keyhole, wherein the keyhole is arranged at a position where it cannot be directly viewed, and the key is provided by the movement guide means. Can be inserted into the keyhole.

[0006] The key is supported by the support means of the key holder, and is guided to the keyhole by the movement guide means, so that the key owner himself cannot see the keyhole and cannot directly touch it with the hand. It is possible to completely prevent unauthorized unlocking.

In this unlocking device, the keyhole is disposed on the indoor side of a door of the locking device, and the door has an insertion hole through which the key holder is inserted near the locking device. The key holder, which is formed and holds the key with the support means, is configured to be guided toward the keyhole by the guide means after the insertion through the insertion hole. Therefore, since the keyhole cannot be seen from the outside and can be unlocked without touching the hand, it is difficult to perform unauthorized unlocking without a key. Locking can be reliably prevented.

Further, the key holder is provided with a tilting means which can be tilted between the key storing position and the key hole inserting position, and when the key holder is inserted into the insertion hole, the tilting means is used by the tilting means. If the key is tilted to a storage position in the key holder, the key holder is inserted into the insertion hole, and then the key is tilted to a key hole insertion position where the key can be inserted into the key hole by the tilting means. Since the key can be raised or laid down, the key can be inserted into a keyhole located at a position where it cannot be seen,
It is possible to reduce the insertion hole through which the key holder is inserted.

In the unlocking device, the key holder may include:
In a case member externally fitted to the lock device, the key inserted into the key holder and the key inserted into the key holder are slidably disposed at a position facing the keyhole of the lock device. And a supporting means for moving the inside of the key holder toward the keyhole at a position where the key faces the keyhole, wherein the supporting means is configured to be movable toward the lock device by the guide means. Then, the lock device is surrounded by the case member, and the key holder slides inside the case member, so that the keyhole is not visible from the outside and is in a position where it is difficult to operate the keyhole, and another person operates the keyhole without permission. And it is difficult to perform unauthorized unlocking. Therefore, unauthorized unlocking can be reliably prevented.

In addition, the owner of the key moves the keyhole to the keyhole insertion position, fits the key, and moves the keyholder to move the key opposite the keyhole. Since the key can be inserted into the keyhole just by moving the key, the key can be smoothly guided into the keyhole.

Further, the movement guide means has the key guide passage and a movement guide portion arranged in the support means, and moves the movement guide portion to move the key into the key guide passage. Is configured to be movable toward the keyhole, the key can be further smoothly guided to the keyhole.

Further, if a groove for sliding the key holder is formed in the case member, and a means for preventing the key holder from falling out of the groove is provided in the groove, the key hole can be removed from the groove. Even if the key holder is to be viewed, since the key holder is arranged in the groove by the retaining means, the key holder obstructs the key hole and cannot be viewed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The unlocking device of the embodiment is configured to unlock a lock device locked by an automatic lock, and further arranges a keyhole formed in the lock device at a position where a person who opens a door cannot see it. The unlocking device 1 according to the first embodiment is configured so that the keyhole of the locking device 2 can be unlocked as shown in FIG. The door 5 is arranged on the room RI side, and the key 3 can be inserted into a keyhole arranged on the room RI side. The unlocking device 1 according to the embodiment is configured such that the key 3 can be unlocked by inserting the key 3 into the locked key device with respect to the locked locking device 2. (Hereinafter referred to as a keyhole insertion position) PV
(A key storage position described later, hereinafter referred to as a key storage position PH).
Are arranged to be able to move between the two positions.

As shown in FIGS. 1 to 4, the unlocking device 1 has a key holder 11 which is formed in a rectangular cylindrical shape and in which the key 3 can be tilted to one end side, and the key 3 as key supporting means. Key holder 1
1 has a key holding portion 12 for fixing the key 3 at a key storage position PH, and a tilting portion 15 for tilting the key 3 released by the key holding portion 12 to a keyhole insertion position PV. I have. The moving means for guiding the movement of the key 3 to the keyhole is performed by hand operation as described later.

The key holder 11 is, as shown in FIGS.
Insertion hole 6 of key holder 11 having a rectangular cross section formed in door 5
It is formed so that it can be inserted. Key holder 11 is outdoor RO
It is desirable that the lock device 2 be formed small so that a hand or tool cannot be inserted from the side to the room RI side, and that the lock device 2 is formed as far away from the lock device 2 as possible.

In the embodiment, the key holder 11 is formed in an elongated shape so that the key 3 can be moved through the door 5 in the penetrating direction of the door 5, and its cross-sectional shape is shown in FIGS. As described above, it is formed in a vertically elongated shape, and has a cylindrical shape with an opening 111 therein. Opening 1
At the upper part of the key holder 11, a key holder guide part 112 through which the key holder part 12 can be slidably inserted is formed wider than the lower opening part 111 to prevent the key holder part 12 to be inserted from falling. The opening 111 may be formed so as to penetrate along the longitudinal direction of the key holder 11, or may be formed only for a space where the key 3 can be tilted. However, the key holding guide portion 112 needs to be formed from the outdoor RO side to at least a position where the head of the key when the key 3 is located at the key storage position PH can be suppressed.

On the tip side of the key holder 11,
The key 3 is pivotally supported so as to be tiltable with respect to the key holder 11. The shaft 13 that supports the key 3 in a tiltable manner is a key holder 11.
The key 3 is rotatably pivoted by a shaft 13 at its body. further,
As shown in FIG. 4, a long groove 113 provided in the longitudinal direction for tilting the key 3 is formed in the top wall 114 on the tip side of the key holder 11, leaving a part of the top wall 114 from the tip surface. Have been. The end face on the long groove 113 side of the partial upper wall 114 left from the front end face is formed as a positioning stopper 115 when the key 3 is erected and placed in the keyhole storage position PV.

When the key 3 is tilted to the key storage position PH in which the key 3 is stored in the key holder 11, the key holding portion 12 prevents the key 3 from moving toward the keyhole insertion position PV. The key 3 in a horizontal state is stopped at that position. In the embodiment, the key 3 is formed in a flat plate shape that can be inserted into a key holding guide 112 formed in the key holder 11. It is desirable to form an inclined surface 121 at the tip of the key holder 12 in order to avoid collision with the head of the key 3 arranged in a horizontal state. In order to confirm that the key holder can be moved to the position where the head can be held down, it is desirable to form a movement stopper 122 that rises upward from the base on the base end side end face of the key holder 12. Further, the upper end of the movement stopper portion 122 is used to pass the key holder 11 through the insertion hole 6 of the door 5 so that the key holder 1
It is preferable to extend the first upper wall 114 to a position that does not exceed the upper surface.

The key holding portion 12 is not limited to the above-described embodiment, and can be hooked on the key 3 as long as the key 3 tilted in the horizontal direction is stopped at that position and can be operated from the outdoor RO side. It may be formed by a hook member or the like.

The tilting portion 15 tilts the key 3 from the key storage position PH to the keyhole insertion position PV, and releases the key 3 in a horizontal state when the key holding portion 12 is released from the head of the key 3. The key 3 is tilted so as to be upright. In the embodiment, a compression coil spring that connects the lower part of the key 3 disposed below the shaft 3 and the bottom wall 116 of the key holder 11 is used. . The compression coil spring 15 always holds the key 3
Are urged toward the keyhole insertion position PH, and a pair is arranged so as to be able to lock on both side surfaces of the key. If the lower part of the key 3 is formed as a forked leg,
Of course, the compression coil spring 15 can be arranged between both legs and connected to the bottom wall 116 by one.

The tilting portion 15 is not limited to the above as long as it tilts the key 3 between the keyhole insertion position PV and the key storage position PH. For example, the tilting portion 15 may be a small cylinder or a magnet. It may operate with. However, when providing an inexpensive and small unlocking device, it is desirable to use a compression coil spring 15 as shown in the figure.

The above-mentioned unlocking device 1 unlocks the locking device 2 locked from the outdoor RO side. After unlocking, the door can be opened to enter the indoor RI, so that the key 3 is unlocked. Even if the room is kept upright at the keyhole insertion position PV, the room RI
The key holder 11 can be pulled out from the side and can be operated by hand. However, the key holder 11 is inserted through the insertion hole 6 of the door 5, and the key holder 11 is again placed on the outdoor RO side with the key 3 standing upright. If you have to return to
It becomes necessary to operate the tilting portion 15 from the outdoor RO side.

In this case, as an unlocking device 1A having a simple structure, as shown in FIGS. 7 and 8, the key 3 is connected to a key 3 via a connecting link 16 in a key holder 11A opened in a cylindrical shape. The tilt operation plate 17 is attached.

As shown in FIG. 8, the key holder 11A has
In the opening 111A, the key holding guide 11
2 and a tilt operation plate guide 118 having substantially the same width as the key holding guide 112 are formed at the lower part. The tilting operation plate 17 is formed in a flat plate shape so that it can be inserted into the tilting operation plate guide portion 118, and the distal end portion has a narrow portion (signed notation) for disposing a pair of connecting links 16 on both sides of the tilting operation plate 17. Without). The shaft 18 is fixed to the narrow portion so as to cross the tilting operation plate 17 and the connecting link 16.
One end of 16 is rotatably supported.

Further, at the base of the tilting operation plate 17, when the tilting operation plate 17 reaches the most advanced position, a movement stopper portion 171 for positioning is directed downward from the base of the tilting operation plate 17. Has been extended. Moving stopper 1
The lower end surface of the key holder 71 is located slightly above the lower surface of the bottom wall of the key holder 11A.

On the other hand, a support shaft 19 is fixed to the lower part of the key 3 in the width direction of the key 3, and the other ends of the connecting links 16 are rotatably supported on both sides of the key 3. Moves the key 3 between the two positions of the keyhole insertion position PV and the key storage position PH. The rest of the configuration of the key holder 11 or the configuration of the key holder 12 is the same as described above, and the same portions are denoted by the same reference numerals as described above as necessary.

Next, the unlocking device 1 configured as described above
The operation of (or 1A) will be described with reference to FIGS.

This unlocking device 1 (or 1A) has a locking device 2
After the key is locked, the key 3 is carried in a state where the key 3 is stored in the key storage position PH in the key holder 11 (or 11A). When the portable device is carried, the lock device (not shown) is used to prevent the key holding portion 12 from dropping out of the key holder 11 (or 11A) by a lock device (not shown) in a state where the key holding portion 12 is in the most advanced position (a state in which the head of the key 3 is pressed). It is desirable.

When the key holder returns home to unlock the lock device 2, the key holder 11 (or 1A) of the unlock device 1 (or 1A) is used.
1A) is inserted into an insertion hole 6 formed in the door 5. When the key holder 11 is inserted, the key holder 3 must be confirmed to be located in the front, and the key holding unit 12 must be locked while the key 3 is located through the door 5. The key holder 12 is moved rearward (in a direction in which the key holder 12 comes off the key 3) along the presser guide 112. Then, the key 3 whose head is pressed by the key holding portion 12 is tilted in the direction in which the key 3 is turned upright by the urging force of the compression coil spring (tilting portion) 15 by releasing the key holding portion 12. I do. When the key 3 reaches the keyhole insertion position PV, the back of the key 3 comes into contact with the positioning stopper 115 formed on the upper wall 114 of the key holder 11, and stops at the keyhole insertion position PV.

On the other hand, in the case of the unlocking device 1A having the connecting link 16 and the tilting operation plate 17, the unlocking device 1A is
Before the key 3 is inserted into the insertion hole 6, the key 3 is arranged at the key storage position PH in the key holder 11A. In this state, the tilting operation plate 17 has been moved to the most advanced position, and the movement stopper portion 171 of the original portion is in contact with the end surface of the original portion of the key holder 11A.

Then, the key holder 12 is moved backward,
After the key 3 is released from the key holder 12, the tilt operation plate 17 is released.
Is moved backward along the tilting operation plate guide portion 118. Then, one end of the connection link 16 rotates around the shaft 18, and the other end of the connection link 16 rotates around the support shaft 19 supporting the key 3, and moves the key 3 from the horizontal direction to the vertical direction. That is, from the key storage position PH to the keyhole insertion position P
Move to V

As shown in FIG. 9, the key 3 which has been turned upright at the keyhole insertion position PV is pulled from the outdoor RO side by hand as the movement guide means to pull the key holder 11 so that the key 3 Inserted into the keyhole. In this mode, the key 3 is unlocked by being inserted into the keyhole.
The door 5 is opened by pulling (or pushing) a knob (not shown) of the door. Then, after opening the door 5 and entering the room RI, the key holder 11 is grasped, the unlocking device 1 is pulled out from the insertion hole 6, and the key 3 is again operated by hand.
And put it in the key storage position PH. Then, the key holder 12 is moved to the most advanced position.

In the case of the unlocking device 1A with the tilting operation plate 17, the key holder 11A is similarly moved backward from the outdoor RO side, and the key 3 is inserted into the keyhole and unlocked. The door 5 may be opened to remove the unlocking device 1A from the indoor RI side. Also, by operating from the outdoor RO side, the key holder 11A may be advanced once to detach the key from the keyhole, and the tilting operation plate 17 is moved to the lowest position. It is also possible to move to the forward position, put the key in the key storage position PH, pull out the unlocking device 1A from the insertion hole, and then enter the room.

As described above, the unlocking device 1 of the first embodiment
(Or 1A), the lock device 2 in which the keyhole is formed is inserted into the room R
In the case where the key 3 is disposed on the I side, the door 3 is formed with the insertion hole 6 through which the key holder 11 is inserted in the vicinity of the lock device 2. In the stored state, the key holder 11 (or 11A) can be inserted. Therefore, since it is extremely difficult to form the insertion hole 6 small and to visually check the keyhole or make contact with the hand, unauthorized unlocking can be almost completely prevented.

The key 3 is a key holder 1 as a support means.
2 and the compression coil spring 15 (or the connection link 16 and the tilting operation plate 17), and can be moved to the keyhole by hand operation as a moving guide means, so that the unlocking can be performed by an extremely easy operation.

Further, the key 3 is stopped at the key storage position by moving the key holder 12, or the key hole insertion position PV is moved by the compression coil spring 15 (or the operation of the tilting operation plate 17).
Therefore, the unlocking device 1 (or 1A) can be provided at a low cost with an extremely simple configuration.

As the movement guide means, the insertion hole 6
The key holder 11 is moved in the guide case by inserting a guide case that allows the key holder 11 to be slidably formed by inserting the key holder 11 and providing a grip portion for movement on the base side of the key holder 11. For example, an unlocking device that does not easily damage the insertion hole 6 of the door 5 can be provided.

Next, a second embodiment will be described. The unlocking device of the second embodiment is capable of unlocking a locked locking device that is arranged outside the door and locking the locking device. The key inserted into the keyhole is unlocked or locked by rotating the key. As shown in FIGS. 10 to 17, the unlocking device 21 of the embodiment includes an outer case 22 fitted and fixed to the locking device 7,
A key holder 23 as a movement guide means formed so as to be inserted into a square groove 221 formed in the outer case 22; and a key as a support means for storing the key 8 inside the key holder 23 and supporting the key 8 And a support member 24.

The outer case 22 and the lock device 7 are, for example, a pair of flat portions 222 and 72 so as to be rotatably fitted.
Are mutually formed. After being fitted, they are integrally formed so as not to be detachable. The outer case 22 is formed in an elongated shape in the axial direction, and has a rectangular groove 221 having an open upper portion formed in the longitudinal direction. The longitudinal direction of the square groove 221 is formed to extend from the end wall 225 of the outer case 22 to the end surface of the lock device 7. Further, it is desirable that the groove width of the square groove 221 is formed as narrow as possible so that the keyhole 70 of the lock device 7 is difficult to see and the hand is difficult to insert.

Further, the front and rear walls arranged in the longitudinal direction are formed as sliding guides for the key holder 23 in the square groove 221, and the key holder 23 is accommodated in each upper part of the front and rear walls. A retaining pin 25 for preventing the key holder 23 from being detached from above is mounted so as to protrude into the square groove 221.

The outer case 22 and the lock device 7 can be fitted to each other as long as they are firmly fixed to each other, even if the outer case 22 is not a non-circular fitting portion having flat portions. It may be formed in the shape of a knob.

The key holder 23 is provided with the square groove 2 of the outer case 22.
The key 8 is moved to a position where the key 8 is inserted into the key holder 23 by moving the key 8 upward and the key 8 accommodated in the key holder 23 is moved to a position facing the keyhole 70 by moving the key 8 downward. Be placed. Then, as shown in FIG.
Is formed in a rectangular plate shape so as to be accommodated in the angular groove 221 with a small gap, and a storage chamber 231 in which the key support member 24 is movably accommodated is formed in a hollow shape. The entire area around the storage room 231 is surrounded by a wall except for an entrance 232 through which the key 8 enters the keyhole 70 of the lock device 7. A guide groove 233 is formed in the upper portion of the front wall along the horizontal direction in a long hole shape, and is provided to protrude from a key support member 24 to be described later.
Is inserted into the guide groove 233.

A key insertion hole 234 into which the key 8 can be inserted is formed in the lower part of the wall on the front side. The key insertion hole 234 is a head hole 23 into which the head 8a of the key 8 is inserted.
4a and a leg hole 234b into which the leg 8b of the key 8 is inserted. Then, in a state in which the key holder 23 accommodates the key support member 24 supporting the key 8, the recess 2 of the key support member 24 is inserted from outside the key insertion hole 234.
The key 8 will be stored in 41. A round hole 235 for pressing the leg 8b of the key 3 from the back side to take out the stored key 8 is formed in the wall on the back side.

Further, on both sides of the key holder 23, FIG.
As shown in FIG. 3, a groove 236 that engages with the retaining pin 25 mounted in the square groove 221 is formed. Groove 23
6 is a position where the key 8 moves from the upper end to a position above the outer case 22 when the key holder 23 moves upward through the angular groove 221, and is formed to a position where the key 8 contacts the retaining pin 25. I have.

As shown in FIGS. 14 and 15, the key support member 24 is formed in a rectangular plate shape so that it can be stored in the storage chamber 231 of the key holder 23, and supports the head 8a of the key 8 so that it can be stored. The key 8 is connected to the recess 241 and has an opening 242 disposed at the end on the lock device 7 side. A movement guide portion 243 is arranged above the key support member 24 at a position where the movement guide portion 243 can move in the guide groove 233 of the key holder 23 so as to protrude from the key support member 24.

The key support member 24 is, as shown in FIG.
The head 8a of the key 8 is arranged in the recess 241 and the leg 8b of the key 8 is supported so as to protrude from the key support member 24,
The key 8 and the leg 8 b are stored in the storage chamber 231 of the key holder 23. Therefore, the key support member 24 is arranged so as to be able to move within the storage chamber 231 by the length of the leg 8 b of the key 8.

The key support member 24 is stored in advance in the key holder 23 while supporting the key 8, and once stored, the key support member 24 cannot be attached or detached unless the key holder 23 is disassembled. Is configured. Key support member 2
When the key holder 23 is stored in the key holder 23, for example, as shown in FIG. 11, the key holder 23 is divided into two in the width direction and fixed by screw means, or one of the upper and lower sides or the left and right sides. The key support member 24 may be housed such that one side is attached like a lid. The movement guide portion 243 is formed so as to be inserted into the guide groove 233 of the key holder 23 and screwed to the key support member 24 after storing the key support member 24.

Of course, the key support member 24 can be formed so that one of the upper, lower, left and right sides can be opened and closed.

Next, the operation of the unlocking device 21 of the second embodiment configured as described above will be described with reference to FIGS.

In this unlocking device 21, the outer case 2
The key 8 is attached and detached by vertically sliding the key holder 23 disposed in the second square groove 221. When the key holder locks the key 8 or unlocks the lock device 7 locked by auto-lock,
As shown in FIG. 6, the key holder 23 is moved upward with respect to the outer case 22. When the key holder 23 is moved to a position where the lower end of the groove 236 of the key holder 23 comes into contact with the retaining pin 25, the key insertion hole 234 of the key holder 23 moves above the outer case 22 and is located at a position to be viewed. Is done. At this position, the key 8 is inserted through the key insertion hole 234 and the key support member 2 is inserted.
The head 8a of the key 8 is positioned and stored in the recess 241 of the key. This operation is performed by the key holder from the outdoor RO side of the door 5 because the lock device 7 formed integrally with the outer case 22 is disposed on the outdoor RO of the door 5.

Then, as shown in FIG. 10, the key holder 23 containing the key 8 is moved downward along the angular groove 221. The position where the lower end surface of the key holder 23 abuts against the bottom surface of the square groove 221 is a position where the key 8 is opposed to the key hole 70 of the lock device 7, and as shown in FIG. The key support member 24 is held by holding the guide portion 243 to lock the lock device 7.
Move to the side. Then, the key 8 becomes the key support member 24
At the same time, the inside of the storage room 231 in the key holder 23 is moved toward the key hole 70, and the leg 8 b is inserted into the key hole 70 through the entrance 232 of the key holder 23. Key 8 is keyhole 70
When it is confirmed that the outer case 22 is locked, the outer case 22 itself can be turned out by rotating the outer case 22 in the locking direction of the locking device 7, and when unlocking, the outer case 22 can be unlocked. By rotating the case 22 in the unlocking direction of the lock device 7, the lock device 7 is unlocked and the door 5 can be opened.

When the key 8 is to be taken out, the key support member 24 is moved backward so that the key 8 is detached from the key hole 70, and the key holder 23 is moved upward to form the key holder 23. By pressing the key 8 from the round hole 235 with a finger, the key 9 is taken out from the concave portion 241 of the key support member 24 and the key insertion hole 234 of the key holder 23.
In the illustrated example, when the key holder 23 is moved upward, the bottom wall of the key holder 23 is located above the key hole 70, but the key hole is housed in the square groove 221. It is obstructed by the key holder 23 and cannot be seen. Of course, it is also possible to configure so that the keyhole 70 is closed by the bottom wall of the keyholder 23 at the position where the keyholder 23 is moved upward.

As described above, the unlocking device 21 according to the second embodiment locks or unlocks the locking device 7 arranged on the outdoor side, and the outer case 22 and the key holder are closed so as to close the keyhole 70. 23 is fixed to the lock device 7. Locking device 7
The keyhole 70 is located at the back of the narrow rectangular groove 221 of the outer case 22 and is located at a position where it cannot be seen from the outside and is hard to operate even when the key holder 23 is moved in any of the vertical directions. However, it is difficult for others to operate the keyhole 70 without permission and to perform unauthorized unlocking. Therefore, unauthorized unlocking can be reliably prevented.

Further, the owner of the key 8 can insert the key 8 into the keyhole 70 simply by fitting the key 8 through the key insertion hole 234 of the key holder 23 and sliding the movement guide 243. Can be smoothly guided to the keyhole 70.

The unlocking device 21 according to the second embodiment is not limited to the illustrated example. For example, the key support member 24 not only supports the head 8a of the key 8 but also supports the leg 8 of the key 8.
The key holder 8 may be formed to be wide in the longitudinal direction of the key 8 so that the key holder 8 can be supported. Also, the key holder 8 is configured to slide in the square groove 221 of the outer case 22 or is detached from the square groove 221. The configuration to be prevented is not limited to the illustrated example, and a known configuration can be used.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an unlocking device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is a plan view showing the unlocking device in FIG.

FIG. 5 is a view showing the unlocking device in FIG. 1 as viewed from the indoor side of the door.

FIG. 6 is a diagram showing a state where the venue apparatus in FIG. 1 is viewed from the outside of the door;

FIG. 7 is a front sectional view showing an unlocking device according to another embodiment of the present invention.

8 is a sectional view taken along line VIII-VIII in FIG.

9 is an operation view showing a state in which the unlocking device in FIG. 1 has moved to unlock.

FIG. 10 is a front sectional view showing an unlocking device according to a second embodiment.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a front view showing the key holder in FIG. 10;

FIG. 13 is a plan view showing the key holder in FIG.

FIG. 14 is a front view showing the key support member in FIG. 10;

FIG. 15 is a sectional view showing the key support member in FIG.

FIG. 16 is a front sectional view showing a state where the key holder is housed in the outer case.

FIG. 17 is a front sectional view showing a state where the key support member has moved inside the key holder.

FIG. 18 is a front view showing a conventional unlocking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unlocking device of 1st form 2, 7 ... Locking device 70 ... Keyhole 3, 8 ... Key 5 ... Door 6 ... Insertion hole 11 ... Key holder 12 ... Key holding part (support means) 15 ... Compression coil spring ( 16: connecting link (tilting means) 17: tilting operation plate (tilting means) 21: unlocking device of the second embodiment 22 ... outer case (case member) 221: square groove 23: key holder (moving guide) Means 231 収納 Storage room (key guide passage) 232 侵入 Inlet 233 案 内 Guide groove 234 鍵 Key insertion hole 236 溝 Groove 24 鍵 Key holder (support means) 241 移動 Movement guide (movement guide) 242 凹 部 recess (support) Means) 25 ... retaining pin

Claims (6)

[Claims] 1. An unlocking device configured to allow a key to be inserted into a locked keyhole of a lock device, comprising: support means for supporting the key; and movement guide means for moving and guiding the key to the keyhole. An unlocking device, comprising: a key holder having: a keyhole disposed at a position where the keyhole is not directly visible; and the movement guide unit allows the key to be inserted into the keyhole. 2. The keyhole is disposed on the indoor side of a door of the lock device, and the door is formed with an insertion hole for inserting the key holder near the lock device,
2. The unlocking device according to claim 1, wherein the key holder that holds the key by the support unit is configured to be guided by the guide unit toward the keyhole after the insertion hole is inserted. 3. apparatus. 3. The key holder is provided with a tilting means that can be tilted between a key storage position and a keyhole insertion position, and when the key holder is inserted into the insertion hole, the tilting means is used for the key holder. Tilt the key to the storage position in the key holder,
The unlocking device according to claim 2, wherein after the key holder is inserted through the insertion hole, the key is tilted to a keyhole insertion position where the key can be inserted into the keyhole by the tilting means. 4. The key holder, wherein: a position in which the key is inserted in a case member externally fitted to the lock device; and a position in which the key inserted in the key holder faces a key hole of the lock device. And a support means for slidably disposed in the key holder at a position facing the keyhole, the support means moving toward the keyhole in the key holder, and the support means is provided with the lock by the guide means. The unlocking device according to claim 1, wherein the unlocking device is configured to be movable toward the device. 5. The key guiding passage, wherein the key guiding passage is provided in the key guiding passage by moving the key guiding passage. 5. The unlocking device according to claim 4, wherein the unlocking device is configured to be movable toward the keyhole. 6. A groove for sliding the key holder is formed in the case member, and a means for preventing the key holder from falling out of the groove is provided in the groove. Item 6. The unlocking device according to Item 4 or 5.