JP2005232940A - Turning key cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turning key cover for preventing a lock-picking in which a key to turn a cylinder of a lock is completely stored within the turning key cover and the key is turned by turning a rotating disc in an opening/closing lid. <P>SOLUTION: In the turning key cover, a drum 2 with a key-hole 3 on the bottom is pivotally mounted at the suitable position within a frame 1 while one side of the opening/closing lid 4 pivotally mounting the rotating disc 5 is axially connected, freely opening, to the position where the rotating disc 5 and the drum 2 are overlapped, so that the drum 2 turns together with the rotation of the rotating disc 5 and that the movement of the opening/closing lid 4 and a drum-stopper 6 work together. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a key cover that rotates a key of a door lock.

  Conventionally, the keyhole surface of the lock cylinder of the door is exposed on the surface, and when locking and unlocking, the key is inserted into the keyhole of the cylinder and operated.

  However, since the keyhole surface of the lock cylinder is exposed, the surroundings are in a released state, and many people suffer damage such as theft by being unlocked by a picking operation with a special tool with a free hand.

  As security measures by picking, measures such as adding locks or replacing with locks with high crime prevention performance were taken. In addition, there are push-types with PIN numbers, remote-control operations, and lock / unlock systems with remote controls such as electric lock systems, but PIN-type push-types can steal PIN numbers, and remote-control operations can It was cumbersome because it needed to be replaced. Engraving box locks are still mainstream because electric lock systems require electrical work and are expensive.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a key rotation cover that can solve the conventional problems at once.

  In order to achieve the above object, the present invention pivots a drum having a keyhole on the bottom surface at an appropriate position inside the frame, and the rotating disk and the drum overlap with one of the opening and closing lids pivotally mounted on the rotating disk. It is characterized in that it is pivotally mounted at a position so that it can be opened and closed, the drum is interlocked with the rotation of the rotating disk, and the operation of the opening and closing lid is interlocked with the drum stopper.

  According to this feature, the key hole opened on the bottom surface of the rotating drum is aligned with the top surface of the key hole of the lock cylinder and secured to the door, so that the key inserted into the lock cylinder from the drum key hole closes the open / close lid of the key rotation cover. Rotation is not possible without operating the rotating board.

  As described above, according to the present invention, when unlocking and unlocking the door, the opening / closing lid of the key rotation cover must be opened, and the key must be inserted into the key hole of the lock cylinder from the key hole on the bottom surface of the drum. At this time, the drum stopper is operated via the shaft in conjunction with the opening operation of the lid, and the drum is locked.

  The keyhole on the bottom of the drum is drilled to approximately the same size as the key thickness and width. That is, since the diameter or one side is equal to or less than the key width, even if the key is rotated with the opening / closing lid opened, the key width surface does not hit the key hole on the drum bottom surface and does not rotate.

  The drum is locked when the open / close lid is open, and the lock is released when the open / close lid is closed. For this reason, unlocking by picking cannot be performed unless the lid is opened. That is, the special tool is operated with the drum locked. At this time, the width of the special tool hits the drum keyhole, and the cylinder before the lock cannot be rotated.

  By attaching the key rotation cover in this way, there is no need to attach two locks, and there is no need to attach an expensive lock with high crime prevention performance, and a safe and secure door can be provided.

  The “bottom surface” of the present invention means the door surface side in the attached state, and the opposite side is the “top surface”.

  Embodiments of the present invention will be specifically described below based on examples of the present invention illustrated in the accompanying drawings.

  In the accompanying drawings, FIG. 1 is a partially cutaway side view showing an example of a key rotation cover according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view of a state in which an opening / closing lid is opened, and FIG. Is a cross-sectional view showing details before the operation of the drum stopper, FIG. 4 is a cross-sectional view showing details after the operation of the drum stopper, FIG. 5 is a cross-sectional view showing an emergency drum stopper, and FIG. FIG. 7 is a front view in which a part of FIG. 6 is broken, FIG. 8 is a broken sectional view showing the emergency drum stopper of FIG. 6, and FIG. 9 is a state in which the lever handle is attached to FIG. FIG.

  First, in FIGS. 1 to 5, the drum 2 is pivotally attached to the frame 1 so that the upper surface of the frame 1 and the upper surface of the drum 2 are flush with each other, and the rotating plate 5 is rotated to a position where it is overlapped with the drum 2. An opening / closing lid 4 pivotally attached to a moving plate 5 is pivotally attached to be freely opened and closed.

  A frame protrusion 9 for limiting the position of the opening / closing lid 4 protrudes from the upper surface of the frame 1, and a drum protrusion 10 for interlocking with the rotating plate 5 protrudes from the upper surface of the drum 2. 5 are formed with cutting grooves 8 respectively corresponding to the frame ridges 9 and the drum ridges 10.

  The end of the shaft 7 fixed to the open / close lid 4 is cut so that the cutting shape is an arcuate shape, and the drum stopper 6 is attached to the cutting surface and is operatively locked by the shaft 11.

  The drum stopper 6 is constantly acted on in the direction of the rotatable position of the drum 2 by the drum stopper spring coil 12. A drum stopper recess 13 corresponding to the drum stopper 6 is formed on the side surface of the drum 2.

  When the opening / closing lid 4 is opened, the shaft 7 fixed to the opening / closing lid 4 rotates, slides on the drum stopper 6 on which the corner of the cutting surface of the shaft 7 is attached, and the drum stopper 6 is applied to the side surface of the drum 2. The drum 2 engages with the stopper recess 13 and cannot rotate.

  Further, an auxiliary lock pin 14 is provided on the inner surface of the frame 1 to prevent the drum 2 from rotating as an emergency lock when the opening / closing lid 4 is broken. The auxiliary lock pin 14 is always pressed by the lock pin pressing spring coil 15.

  The auxiliary lock pin 14 has a hole corresponding to the lock pin holding shaft 16 in the upper part. One of the hole and the lock pin holding shaft 16 is fitted to suppress the force acting on the auxiliary lock pin 14.

  An upward force is applied to the lock pin holding shaft 16 by the auxiliary lock pin 14. The opening / closing lid 4 prevents this upward force. When the opening / closing lid 4 is broken by this mechanism, the lock pin holding shaft 16 jumps up, and the auxiliary lock pin 14 is fitted into the emergency pin recess so that the drum 2 cannot be rotated.

  When this auxiliary lock pin 14 is actuated, it is pushed by the lock pin pressing spring coil 15, so that the depth of the hole is combined with the depth, and the operation cannot be released from the outside.

  Next, another example will be described with reference to FIGS.

  The opening / closing lid 4 of the key rotation cover has a mechanism that opens in a direction perpendicular to the door d. The drum stopper 6 is pivotally supported by a drum stopper shaft 11 on a locking tool 21 fixed to an end of the opening / closing lid 4 on a line extending in the direction of the axis 7 of the opening / closing lid 4 from a substantially central portion of the rotating plate 5. ing. For this reason, when the opening / closing lid 4 is opened, the drum stopper 6 is pushed and fitted into a protruding portion (not shown) of the drum 2.

  The emergency lock pin 14 is inserted into the outer tube 20, and the lock pin 14 is restrained by the lock pin holding shaft 16. The lock pin holding shaft 16 is in contact with a position where the lower portion of the opening / closing lid 4 of the shaft 7 is processed into an R shape, and the upward force of the lock pin holding shaft 16 is always suppressed.

  Due to the above structure, the drum stopper 6 operates in conjunction with opening / closing of the opening / closing lid 4 to operate the rotation of the drum 2, and when the opening / closing lid 4 is broken, the lock pin holding shaft 16 jumps up and the lock pin 14 is moved up to the drum 2. Is engaged with the emergency pin recess 17 formed on the side surface of the drum 2 to lock the rotation of the drum 2.

  FIG. 9 shows a state in which the handle 22 is attached to FIG. 2, and the handle shaft 23 of the handle 22 is interlocked with a latch bolt (not shown). As described above, when the key rotation cover and the lever handle 22 are integrated, various kinds of balanced designs can be made.

The side view which fractured | ruptured a part of this invention The front view which fractured | ruptured a part of the state which opened the opening-and-closing lid of this invention Sectional drawing which shows the detail before the action | operation of the drum stopper of this invention Sectional drawing which shows the detail after the action | operation of the said drum stopper Sectional drawing which shows the emergency drum stopper of this invention The side view which fractured | ruptured a part which shows the other example of this invention Front view with part of the above broken Broken section showing the emergency drum stopper of FIG. FIG. 2 is a front view showing a state where the lever handle is mounted.

Explanation of symbols

1. . . . . Frame 2. . . . . Drum 3. . . . . Keyhole 4. . . . . Opening / closing lid 5. . . . . Rotating board 6. . . . . 6. Drum stopper . . . . Axis 8. . . . . Cutting groove 9. . . . . Frame ridges10. . . . . Drum protrusion 11. . . . . Drum stopper shaft 12. . . . . 12. Spring coil for drum stopper . . . . Drum stopper recess 14. . . . . Auxiliary lock pin 15. . . . . Lock pin pressing spring coil 16. . . . . Lock pin holding shaft 17. . . . . Emergency pin recess 18. . . . . Picking 19. . . . . Rotating sphere 20. . . . . Outer tube 21. . . . . Locking tool 22. . . . . Handle 23. . . . . Handle shaft d. . . . . Door k. . . . . Lock cylinder

Claims (1)

  A drum 2 with a keyhole 3 in the bottom is pivotally mounted at an appropriate position inside the frame 1, and one of the opening / closing lids 4 pivotally mounted on the rotating plate 5 can be opened and closed at a position where the rotating plate 5 and the drum 2 overlap. A key rotation cover characterized in that the drum 2 is interlocked with the rotation of the rotation board 5 and the operation of the opening / closing lid 4 and the drum stopper 6 are interlocked.

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