JP2015140576A - cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder lock that has a simple structure and that can leave a use history of an emergency key.SOLUTION: A cylinder lock comprises: a plug 3 that is fitted with a tumbler pin 1 and a lock tumbler 2; and a cylinder case 5 into which the plug 3 is inserted and which includes a drive pin 4 for urging the tumbler pin 1 in the central direction of the plug 3 via the lock tumbler 2 in an initial rotation position of the plug 3. An outer peripheral edge of the plug 3 is provided with a fitting recess 6 into which the lock tumbler 2 is fitted in the state of closing a rotation boundary between the plug 3 and the cylinder case 5 in an unlocking rotation position of the plug 3.

Description

  The present invention relates to a cylinder lock.

  Unlocking operation is possible with the emergency unlocking key in addition to the regular unlocking key, and when the unlocking operation is performed with the emergency unlocking key, the cylinder lock body cannot be removed and rotated. As a cylinder lock in which a history of use remains, the one described in Patent Document 1 is known.

  In this conventional example, in addition to the code pin, the plug is provided with a lock code pin, a driver pin and a lock driver pin are mounted on the cylinder case side, and a service key for operating the cylinder lock body includes: An unlocking recess for guiding the cord pin and the locking cord pin to a position where the rotational boundary between the plug and the cylinder case is opened is provided.

  On the other hand, the emergency key is provided with an unlocking recess for guiding the code pin to the rotation boundary open position and a fitting recess for fitting the locking code pin.

  Under the above configuration, both the cord pin and the locking cord pin do not block the rotation boundary between the plug and the cylinder case when the service key or the emergency key is inserted. Operation is allowed, but when the plug is rotated using the emergency key and the locking cord pin moves to the position facing the locking driver pin, the locking cord pin fits into the fitting recess. The locking driver pin closes the rotation boundary, and thereafter the rotation of the plug is restricted and the removal of the emergency key is also restricted.

JP 2013-12496 A

  However, the above-described conventional example has a problem that the structure becomes complicated and the manufacturing cost increases because it is necessary to mount the driver pin for locking in addition to the driver pin.

  The present invention has been made to eliminate the above-described drawbacks, and an object of the present invention is to provide a cylinder lock having a simple structure and capable of leaving an emergency key usage history.

According to the present invention, the object is
A plug 3 fitted with a tumbler pin 1 and a lock tumbler 2,
A cylinder case 5 provided with a drive pin 4 into which the plug 3 is inserted and urges the tumbler pin 1 toward the center of the plug 3 via the lock tumbler 2 at the initial rotation position of the plug 3;
A cylinder lock is provided on the outer peripheral edge of the plug 3 in which the lock tumbler 2 is fitted in a state where the rotation boundary between the plug 3 and the cylinder case 5 is closed at the unlocking rotation position of the plug 3. Is achieved by providing

  A plug 3 inserted into the cylinder case 5 is provided with a tumbler pin 1 and a lock tumbler 2 stacked on the distal end of the plug 3 on the tumbler pin 1. The tumbler pin 1 and the lock tumbler 2 are connected to the plug 3. When 3 is in the initial rotation position, it is positioned on the moving direction line of the drive pin 4 disposed in the cylinder case 5 and is urged toward the center of the plug 3.

  Under the above configuration, the rotation operation to the plug 3 is performed by positioning the boundary between the drive pin 4 and the lock tumbler 2 at the rotation boundary between the plug 3 and the cylinder case 5, and between the lock tumbler 2 and the tumbler pin 1. This is also possible by placing the boundary at a rotational boundary. When the drive pin 4 and the lock tumbler 2 are held in the cylinder case 5 and the plug 3 is rotated with the boundary between the lock tumbler 2 and the tumbler pin 1 positioned at the rotation boundary, the plug 3 is in the unlocked rotation position. The lock tumbler 2 urged toward the center of the plug 3 by the drive pin 4 is pushed out into the fitting recess 6 formed on the outer periphery of the plug 3.

  The lock tumbler 2 partially protrudes into the cylinder case 5 in the fitted state in the fitting recess 6 to close the rotation boundary between the plug 3 and the cylinder case 5 and prohibits the subsequent rotation of the plug 3.

  Therefore, when the unlocking operation is performed using the unlocking key 8 having the unlocking recess 7 having a depth that positions the boundary between the lock tumbler 2 and the tumbler pin 1 as the rotation boundary, the rotation operation can be performed from the unlocking position. Since it becomes impossible, it becomes possible to know that such an unlocking key 8 was used.

  On the other hand, since the state transition does not occur due to the rotation operation of the plug 3 in which the boundary between the drive pin 4 and the lock tumbler 2 is positioned at the rotation boundary between the plug 3 and the cylinder case 5, the rotation boundary in this mode is not generated. The unlocking key 8 having the unlocking recess 7 that opens the door can be used repeatedly as a regular key.

  Although it is possible to use a short pin tumbler for the lock tumbler 2, if it is formed in a spherical shape, it is possible to completely prevent malfunction due to tilting of the lock tumbler 2 in the tumbler insertion hole of the plug 3. It becomes possible.

In addition, the cylinder lock set using the cylinder lock described above is
The cylinder lock;
A service key 8A having an unlocking recess 7 that allows the plug 3 to rotate by making the boundary between the lock tumbler 2 and the drive pin 4 correspond to the rotation boundary between the plug 3 and the cylinder case 5 when inserted into the plug 3. When,
An emergency key 8B having an unlocking recess 7 that allows the plug 3 to rotate by making the boundary between the tumbler pin 1 and the lock tumbler 2 correspond to the rotational boundary between the plug 3 and the cylinder case 5 when inserted into the plug 3; Can be configured.

  In the present invention, when the unlocking operation is performed using the emergency key 8B, the plug 3 is restrained at the unlocking operation rotation position and cannot be rotated, so that the use history of the emergency key 8B can be left. Become. Further, the cylinder lock according to the present invention has a simple configuration in which the fitting recess 6 is provided in the plug 3 of the normal cylinder lock and the lock tumbler 2 is further added, so that the manufacturing cost can be reduced.

In this case,
The unlocking recess 7 of the emergency key 8B is formed to a depth at which one end of the tumbler pin 1 is brought into contact with the inner periphery of the cylinder case 5 in the unlocking rotation position of the plug 3, and the plug 3 of the emergency key 8B in the unlocking rotation position. It can be configured such that removal from the device is restricted.

  In the present invention, when the unlocking operation is performed by the emergency key 8B, the emergency key 8B cannot be removed in addition to the rotation operation to the plug 3 at the unlocking rotation position, so that the use history becomes clearer.

Furthermore, the handle lock using the cylinder lock described above is
A handle case 10 that has a lock portion 9 that engages with and disengages from the vending machine main body and is fixed to the door of the vending machine;
The handle 11 is pulled out and inserted into the handle case 10 so as to be rotatable, and the handle portion 11 is fitted in the handle fitting recess 12 of the handle case 10 in the push-in posture to restrict the rotation operation, and in the pull-out posture from the handle case 10. A handle portion 13 for moving the lock portion 9 to a locked and unlocked position by a rotation operation;
It can be configured to have a cylinder lock that is accommodated in the handle portion 13 and restricts the pulling operation of the handle portion 13 from the handle case 10 in the locked state.

  In the present invention, since the use history by the emergency key 8B generally managed by the installation of the vending machine and the administrator remains, the cause of the decrease in the product or the sales price is, for example, that of the vending machine at the time of disaster. It is possible to reliably distinguish between the installation and the intention of the administrator and the unauthorized operation such as theft.

  According to the present invention, it is possible to leave an emergency key usage history with a simple structure.

It is a figure which shows a handle lock, (a) is a front view, (b) is a side view. It is a figure which shows the handle lock of an unlocked state, (a) is a front view, (b) is a side view. It is a figure which shows a stopper rod, (a) is the sectional view on the 3A-3A line of FIG. 1 in a locked state, (b) is sectional drawing which shows an unlocked state. It is a figure which shows a cylinder lock, (a) is a front view, (b) is a side view, (c) is the sectional view on the 4C-4C line of (a). It is a figure which shows an unlocking key, (a) is a front view which shows a service key, (b) is the 5B-5B sectional view of (a), (c) is a front view which shows an emergency key, (d) is ( c) 5D-5D cross-sectional view It is a figure which shows the state of a special tumbler part at the time of using a service key, (a) is a figure which shows the initial rotation position of a plug, (b) is a figure which shows the rotation initial stage of a plug, (c) is an unlocking rotation position. FIG. It is a figure which shows the state of a special tumbler part at the time of using an emergency key, (a) is a figure which shows the rotation initial stage of a plug, (b) is a figure which shows an unlocking rotation position.

  An embodiment of the present invention configured as a cylinder lock set for a vending machine is shown below in FIG.

  The key cylinder set for the vending machine includes a cylinder lock (B) incorporated in the handle lock (A) shown in FIG. 1 and an unlock key 8 shown in FIG. The handle lock (A) is fixed to the door of the vending machine and used to lock the door. The handle lock 10 is fixed to the vending machine door (not shown), and is stored in the handle case 10. It has a handle portion 13 and a lock portion 9 that is disposed at the rear end of the handle case 10 and rotates by a rotation operation to the handle portion 13, and the lock portion 9 is fixed to the vending machine main body side in the locked state. The door opening operation is restricted by locking with the strike.

  The handle portion 13 has a handle portion 11 at the front end portion, and the handle portion 13 is locked when the handle portion 11 is immersed in the handle fitting recess 12 of the handle case 10 as shown in FIG. This is realized by disabling the operation of the handle portion 11. Further, the handle portion 13 urged in the protruding direction by a compression spring (not shown) causes the stopper rod 14 to be locked in a locking hole 10a formed in the handle case 10 as shown in FIG. To maintain the immersion position.

  The lock state is released by operating the cylinder lock (B) mounted on the handle portion 13 by using the unlock key 8. When the cylinder lock (B) is unlocked, first, the cylinder lock ( The cam 15 connected to the plug 3 of B) rotates, and the stopper rod 14 moves in the direction of disengagement from the locking hole 10a against the reaction force of the compression spring 16. When the stopper rod 14 is released from the locking hole 10a and released, the handle 13 is moved forward by the reaction force of the compression spring described above, and thereafter the unlocking operation can be performed by grasping the handle 13. become.

  As shown in FIG. 4, the cylinder lock (B) is formed by inserting the plug 3 into the cylinder case 5. A key insertion groove 3a for inserting the unlocking key 8 is formed in the plug 3 through the longitudinal direction, and an appropriate number of tumbler pins 1 are inserted at a predetermined pitch so as to advance and retract in the key insertion groove 3a.

  In this example, the plug 3 has two tumbler rows in which an appropriate number of tumbler pins 1 are arranged in a straight line along the longitudinal direction of the plug 3, and the tumbler pins 1 in each tumbler row have key insertion grooves. It advances and retreats in the key insertion groove 3a from the opposite direction across 3a.

  Further, a drive pin 4 that is urged toward the center of the plug 3 by a compression spring 4a is disposed in the cylinder case 5 corresponding to the tumbler pin 1 in the plug 3, and in a state in which the unlocking key 8 is not inserted, Each tumbler pin 1 is pushed by the corresponding drive pin 4 and moves to the center of the plug 3. As a result, the rotation boundary between the plug 3 and the cylinder case 5 is blocked and blocked by the drive pin 4, so that the rotation operation on the plug 3 is restricted.

  On the other hand, as shown in FIG. 4 (c), when the unlocking key 8 provided with the predetermined unlocking recess 7 is inserted, each tumbler pin 1 is pushed by the unlocking key 8 and is connected to the drive pin 4. The boundary is moved until the boundary is located at the rotational boundary between the plug 3 and the cylinder case 5, and the rotational boundary is released. At the end of each tumbler pin 1 on the center side of the plug 3, a component force in the radial direction of the plug 3 is applied to the tumbler pin 1 fitted in the unlocking recess 7 by the operation force of the unlocking key 8. A tapered surface 1a that allows insertion of the key 8 is formed.

  As shown in FIG. 5, the unlocking recess 7 of the unlocking key 8 is provided corresponding to each tumbler pin 1, and in this example having two tumbler rows, in addition to the two rows corresponding to each tumbler row, In order to enable use of the unlocking key 8 in the state where the unlocking key 8 is reversed with respect to the insertion posture, two rows are further arranged at point-symmetrical positions with respect to the cross-sectional center of the unlocking key 8 to form a total of four rows. The

  Further, as shown in FIG. 4C, a special tumbler portion 17 in which a spherical lock tumbler 2 is interposed between the tumbler pin 1 and the drive pin 4 is formed at the rearmost end of one tumbler row. As shown in FIG. 6A, the drive pin 4, the lock tumbler 2, and the tumbler pin 1 in the special tumbler portion 17 are arranged in a straight line when the plug 3 is in the initial rotation position (locking rotation position).

  Further, as shown in FIG. 6C, a fitting recess 6 is provided on the outer periphery of the plug 3 so as to face the drive pin 4 when the plug 3 is rotated to the unlocking rotation position. The fitting recess 6 is formed with a small diameter as compared with the drive pin 4 as shown in FIG. 6C and a large diameter as compared with the lock tumbler 2 as shown in FIG. 7B. The

  In order to perform the locking / unlocking operation of the cylinder lock (B) configured as described above, a service key 8A used in normal operation and an emergency key 8B used in emergency are prepared. The service key 8A and the emergency key 8B differ from each other only in the unlocking recess 7 corresponding to the special tumbler portion 17, and all of the remaining unlocking recesses 7 are formed in the same manner.

  FIG. 6 shows the state of the tumbler pin 1 in the special tumbler portion 17 when the service key 8A is inserted. When the service key 8A is inserted, the tumbler pin 1 urged in the center direction by the drive pin 4 is the position of the service key 8A. It is pushed out in the centrifugal direction by the unlocking recess 7. As a result, since the boundary between the lock tumbler 2 and the drive pin 4 is located at the rotational boundary between the plug 3 and the cylinder case 5, the rotational boundary is opened, and as shown in FIG. The rotation operation to the plug 3 becomes possible, and the unlocking operation shown in FIG. As described above, since the fitting recess 6 is formed to have a smaller diameter than the drive pin 4, the drive pin 4 that directly faces the fitting recess 6 falls into the fitting recess 6 in the unlocked rotation position. In other words, the open state of the rotation boundary is maintained.

  On the other hand, as shown in FIG. 7, the depth dimension of the unlocking recess 7 of the emergency key 8B is such that the boundary between the tumbler pin 1 and the lock tumbler 2 is plug 3 and cylinder case 5 with the emergency key 8B inserted. And the rotation operation to the plug 3 into which the emergency key 8B is inserted is allowed.

  As described above, since the fitting recess 6 has a larger diameter than the lock tumbler 2, when the plug 3 is rotated to the unlocking rotation position using the emergency key 8B, FIG. ), The lock tumbler 2 is pushed by the drive pin 4 and pushed into the fitting recess 6. As shown in FIG. 7 (b), the depth of the fitting recess 6 is shallower than the length of the lock tumbler 2, and is formed in such a dimension that the tip of the depressed lock tumbler 2 protrudes toward the cylinder case 5. Therefore, in this state, the rotation boundary between the plug 3 and the cylinder case 5 is closed, and thereafter, the rotation operation to the plug 3 becomes impossible.

  Further, the fitting recess 6 of the emergency key 8B has a clearance exceeding the depth of the unlocking recess 7 between the case side end of the tumbler and the inner peripheral wall of the cylinder case 5 in the state of FIG. If this is done, the emergency key 8B can be removed at the unlocked rotation position, but if the clearance is not set, the emergency key 8B cannot be removed at the unlocked rotation position, and the usage history is clearer. become.

DESCRIPTION OF SYMBOLS 1 Tumble pin 2 Lock tumbler 3 Plug 4 Drive pin 5 Cylinder case 6 Fitting recessed part 7 Unlocking recessed part 8A Service key 8B Emergency key 9 Lock part 10 Handle case 11 Handle part 12 Handle fitting recessed part 13 Handle part A Handle lock B Cylinder lock

Claims (5)

A plug with a tumbler pin and a lock tumbler;
A cylinder case provided with a drive pin for inserting a plug and urging the tumbler pin toward the center of the plug via the lock tumbler at the initial rotation position of the plug;
A cylinder lock provided with a fitting recess in which an outer peripheral edge of the plug is fitted in a state where the lock tumbler closes a rotation boundary between the plug and the cylinder case at an unlocking rotation position of the plug.   The cylinder lock according to claim 1, wherein the lock tumbler is formed in a spherical shape. A cylinder lock according to claim 1 or 2,
A service key with an unlocking recess that enables rotation of the plug by allowing the boundary between the lock tumbler and the drive pin to correspond to the rotation boundary between the plug and the cylinder case when inserted into the plug;
A key cylinder set having an emergency key having an unlocking recess that enables rotation of the plug by allowing a boundary between the tumbler pin and the lock tumbler to correspond to a rotation boundary between the plug and the cylinder case when inserted into the plug.   The unlocking recess of the emergency key is formed to a depth at which one end of the tumbler pin comes into contact with the inner periphery of the cylinder case at the unlocking rotation position of the plug, and the removal of the emergency key from the plug at the unlocking rotation position is restricted. The key cylinder set according to claim 3. A handle case fixed to the door of the vending machine with a lock part that engages with and disengages from the vending machine body;
The handle is pulled out and inserted into the handle case in a rotatable manner, and the handle portion is fitted into the handle fitting recess of the handle case in the push-in posture to restrict the rotation operation, and the lock is performed by the rotation operation in the pull-out posture from the handle case. A handle for moving the part to the unlocked position,
A handle lock having a cylinder lock according to claim 1 or 2, wherein the handle lock is housed in the handle portion and restricts a pulling operation of the handle portion from the handle case in a locked state.

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