JP6361490B2 - Cylinder lock - Google Patents

Description

  The present invention relates to a cylinder lock.

Patent Documents 1 and 2 disclose cylinder locks that can change the key code.
Patent Document 1 Japanese Unexamined Patent Application Publication No. 2008-57335 Patent Document 2 Japanese Unexamined Patent Application Publication No. 2009-220097

  In a cylinder lock used in a gaming machine or the like, it is desired to be able to grasp that the lock has been opened illegally in a distribution process or the like.

  A cylinder lock according to an aspect of the present invention includes an outer cylinder having a first protrusion on the inner surface, an inner cylinder rotatably accommodated in the outer cylinder, and an inner cylinder having a keyhole, which is rotatable with the inner cylinder in the outer cylinder. A first position that is received and locked to the first protrusion to limit rotation of the inner cylinder at the first rotation position; and the inner cylinder is rotated at the first rotation position without being locked to the first protrusion. And a moving member that is movable relative to the inner cylinder between a second position that is not restricted.

  In the cylinder lock, the outer cylinder has the second protrusion at a position different from the first protrusion on the inner surface, and the moving member located at the second position with respect to the inner cylinder is the first cylinder at the first rotational position. It may be further rotated together with the inner cylinder without limiting the rotation, and the rotation of the inner cylinder may be limited at the second rotation position by being locked by the second protrusion.

  The cylinder lock can change the key code, and each of the first rotation position and the second rotation position may be a reset position where the key code can be reset.

  In the cylinder lock, the second protruding portion protrudes higher than the first protruding portion from the inner surface of the outer cylinder, and the moving member is a portion facing the inner surface of the outer cylinder of the moving member when moving from the first position to the second position. May move away from the inner surface of the outer cylinder.

  In the cylinder lock, the inner cylinder may have a groove that movably accommodates a moving member communicating with the key hole.

  In the cylinder lock, the moving member is supported by the inner cylinder in the groove via an elastic body fixed to the inner cylinder, and the moving member is elastic by being pushed by the insertion member inserted into the key hole. When the body is contracted to move from the first position to the second position along the groove and the insertion member is removed from the keyhole, the elastic body may be restored from the second position to the first position by the restoring force.

  In the cylinder lock, the moving member may be moved from the first position to the second position by being pushed by a predetermined key inserted into the key hole as the insertion member.

  The summary of the invention does not enumerate all the features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

It is a figure which shows an example of the external appearance perspective view of the cylinder lock which concerns on this embodiment. It is a figure which shows an example of the disassembled perspective view of the cylinder lock which concerns on this embodiment. It is an example of sectional drawing of the outer cylinder which showed the moving member in a 1st position collectively. It is an example of sectional drawing of the outer cylinder which showed the moving member in a 2nd position collectively. It is an example of a sectional view of a cylinder lock concerning this embodiment. It is a figure which shows a mode that a special key is inserted in a cylinder lock. It is an example of sectional drawing of a cylinder lock in the state where a special key was inserted in a keyhole. It is a figure which shows a motion of a moving member when a special key is inserted in a keyhole and a special key is rotated clockwise. It is a figure which shows a motion of a moving member when a special key is inserted in a keyhole and a special key is rotated counterclockwise. It is a figure which shows the mode of the cylinder lock which rotated the inner cylinder to the 2nd rotation position using the special key. It is a figure which shows a mode that a general key is inserted in a cylinder lock. It is an example of sectional drawing of a cylinder lock in the state where a general key was inserted in a keyhole. It is a figure which shows a motion of a moving member when a general key is inserted in a keyhole and a general key is rotated clockwise. It is a figure which shows a motion of a moving member when a general key is inserted in a keyhole and a general key is rotated counterclockwise. It is a figure which shows the mode of the cylinder lock which rotated the inner cylinder to the 1st rotation position using the general key.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a diagram illustrating an example of an external perspective view of a cylinder lock 10 according to the present embodiment. The cylinder lock 10 is a cylinder lock whose key code can be changed. The cylinder lock 10 includes an outer cylinder 20, an inner cylinder 30, and a base 40. The outer cylinder 20 accommodates the inner cylinder 30 rotatably about the rotation axis. The inner cylinder 30 has a key hole 31 into which a key is inserted. The outer cylinder 20 accommodates the inner cylinder 30 rotatably inside and is fixed to the base 40.

  The cylinder lock 10 may be used to lock a gaming machine such as a pachinko machine or a slot machine, for example. The gaming machine includes, for example, a frame, a gaming machine main body, and a cover. The gaming machine is fixed to the island facility of the game hall through a frame. The cover covers the game board provided in the gaming machine main body so as to be visible.

  The cylinder lock 10 is provided, for example, in a mounting hole of the gaming machine main body, and locks the gaming machine main body with respect to the frame. The cylinder lock 10 further locks the cover to the gaming machine main body. For example, when the key is rotated clockwise with respect to the cylinder lock 10, the cylinder lock 10 changes the locked state of the gaming machine body to the frame to the unlocked state. Further, when the key is rotated counterclockwise with respect to the cylinder lock 10, the cylinder lock 10 changes the lock state of the cover to the gaming machine main body to the unlocked state.

  The keys used for the cylinder lock 10 include a general key and a unique key. Further, the key used for the cylinder lock 10 includes a special key. The general key, unique key, and special key may be collectively referred to as a key. The general key is a key having a key code common to a plurality of cylinder locks. The general key is a key that is common to a plurality of stores, for example. A general key is a key that is relatively easy to obtain and has lower security than a unique key. The unique key is a key having a unique key code. The unique key is, for example, a key that is different for each store. The unique key is a key that is limited in acquisition, difficult to obtain illegally, and higher in security than a general key. The special key is an example of an insertion member, and is a key different from the general key and the unique key. The special key is an example of a predetermined key. The special key may be a key having a key code common to a plurality of cylinder locks, like the general key. However, unlike a general key, it is a key that is difficult to obtain illegally. Details of the special key will be described later.

  When the cylinder lock is shipped, the key code of the unique key of the installation location such as a store is often unknown. For example, a large number of gaming machines used for a plurality of holes may be transported by truck. In addition, a large number of gaming machines may be stored in a distribution warehouse and then distributed to each hall. In addition, the number of gaming machines installed in the hall may be changed. Thus, in many cases, it is not possible to determine in which hole a gaming machine will be installed until it is installed.

  Therefore, in general, the cylinder lock is shipped in a state where the key code of the general key is set as the key code that can be unlocked, in order to ensure the convenience at the time of installation in the hall. Since the key code of the general key is set as the key code that can be unlocked, it is possible to easily perform the inspection before shipping of the gaming machine or the inspection after arrival.

  After the game machine is installed in the hall, the hall administrator resets the key code of the cylinder lock using the general key, and uses the unique key unique to the hall to change the key code of the unique key to the cylinder lock. Set to a lockable key code. Thereby, the cylinder lock can be unlocked and locked only by the unique key unique to the hall, and security can be enhanced.

  However, if the key code of the cylinder lock provided in the gaming machine is set as the key code of the general key, an unspecified person can obtain it before the gaming machine is shipped and installed in the hall. There is a possibility that an illegal act is performed on the gaming machine using the general key. For example, there is a possibility that parts will be illegally exchanged for gaming machines stored in a distribution warehouse of gaming machines. Therefore, it is desirable to be able to grasp that the cylinder lock has been unlocked illegally in the distribution process or the like.

  In the cylinder lock 10 according to the present embodiment, the inner cylinder 30 can be rotated from a reference position 24a indicating a locked state to a first rotation position 24b indicating a position where a key code can be reset using a general key or a unique key. . Further, the inner cylinder 30 can further rotate from the reference position 24a to a second rotation position 24c indicating another position where the key code can be reset using a special key. The inner cylinder 30 cannot be rotated to the second rotation position 24c unless a special key is used.

  For example, the cylinder lock 10 is shipped with the position of the inner cylinder 30 set to the second rotation position 24c. Therefore, for example, even if an attempt is made to return the inner cylinder 30 to a resettable position once after unlocking using a general key in a distribution process, the inner cylinder 30 can only rotate to the first rotation position 24b. Therefore, by determining whether or not the inner cylinder 30 is at the second rotational position 24c, it is possible to determine whether or not there is a possibility that the cylinder lock 10 has been unlocked illegally in a distribution process or the like.

  FIG. 2A is a diagram illustrating an example of an exploded perspective view of the cylinder lock 10 according to the present embodiment. The cylinder lock 10 further includes a moving member 32, a spring 33, and a fixed portion 34. The spring 33 is an example of an elastic body.

  2B and 2C are examples of cross-sectional views of the outer cylinder 20. In FIG. 2B and FIG. 2C, the opening 21 and the moving member 32 of the outer cylinder 20 are also illustrated in order to show the position of the moving member 32 in the outer cylinder 20. FIG. 3 shows an example of a sectional view of the cylinder lock 10.

  The outer cylinder 20 has an opening 21 that exposes the keyhole 31 of the inner cylinder 30 on the front surface. The opening 21 includes a notch for enabling insertion / removal of a key at each of the reference position 24a, the first rotation position 24b, and the second rotation position 24c. As shown in FIGS. 2B and 2C, the outer cylinder 20 has an inner surface 25, a first protrusion 22 that protrudes toward the rotation axis P, and a first protrusion that protrudes further toward the rotation axis P than the first protrusion 22. The second protrusion 23 is different from the part 22. The second protrusion 23 protrudes higher than the first protrusion 22 from the inner surface 25 of the outer cylinder 20.

  FIG. 2B shows the moving member 32 in the first position that is locked to the first protrusion 22 of the outer cylinder 20 and restricts the rotation of the inner cylinder 30 at the first rotation position 24b. FIG. 2C does not restrict the rotation of the inner cylinder 30 at the first rotation position 24b without being locked to the first protrusion 22 but further rotates together with the inner cylinder 30 and is locked to the second protrusion 23 to The moving member 32 in the 2nd position which restrict | limits rotation of the inner cylinder 30 in the 2 rotation position 24c is shown.

  The moving member 32 is accommodated in the outer cylinder 20 so as to be rotatable together with the inner cylinder 30 and is locked to the first protrusion 22 of the outer cylinder 20 to restrict the rotation of the inner cylinder 30 at the first rotation position 24b. Between the first position (FIG. 2B) and the second position (FIG. 2C) where the rotation of the inner cylinder 30 is not restricted at the first rotation position 24 b without being locked to the first projecting portion 22. It is movable.

  The distance Gb between the front end portion of the first locking portion 32 a of the moving member 32 in the first position with respect to the inner cylinder 30 and the inner surface 25 is equal to the distance of the moving member 32 in the second position with respect to the inner cylinder 30. It is shorter than the distance Gc between the front-end | tip part and the inner surface 25 of the 1st latching | locking part 32a. In other words, the distal end portion of the first locking portion 32a of the moving member 32 in the second position is farther from the inner surface 25 than the distal end portion of the first locking portion 32a of the moving member 32 in the first position. Therefore, when the moving member 32 in the first position rotates together with the inner cylinder 30 counterclockwise, the first locking portion 32a of the moving member 32 is locked by the first protruding portion 22. When the moving member 32 in the second position rotates together with the inner cylinder 30 counterclockwise, the first locking portion 32a of the moving member 32 is not locked to the first protruding portion 22, and further counterclockwise. And is locked by the second protrusion 23.

  As shown in FIG. 2A, the inner cylinder 30 has a groove 35 that movably accommodates a moving member 32 that communicates with the keyhole 31. The moving member 32 can move the groove 35 in a direction perpendicular to the rotation axis of the inner cylinder 30. When the moving member 32 is in the first position, the moving member 32 is locked to the first protrusion 22 when the inner cylinder 30 is in the first rotation position 24b, and when the inner member 30 is in the second position, the inner cylinder 30 is in the second rotation position. It includes a first locking portion 32a that is locked to the second protrusion 23 when located at 24c. The first locking portion 32 a is a portion facing the inner surface 25 of the outer cylinder 20 of the moving member 32.

  The moving member 32 includes an exposed portion 32 b that is exposed from the keyhole 31 through the groove 35 and pressed by a special key inserted into the keyhole 31. As shown in FIG. 3, the exposed portion 32 b of the moving member 32 is exposed from the keyhole 31 in a state where a key such as a special key is not inserted into the keyhole 31. The moving member 32 moves from the first position to the second position in a direction perpendicular to the rotation axis of the inner cylinder 30 when the exposed portion 32 b is pushed by a special key inserted into the keyhole 31. When the moving member 32 moves from the first position to the second position, the first locking portion 32a that is a portion facing the inner surface 25 of the outer cylinder of the moving member 32 moves away from the inner surface 25 of the outer cylinder.

  Furthermore, as shown in FIG. 2A, the moving member 32 includes a second locking portion 32c to which the spring 33 is locked. The fixing portion 34 is fixed to the inner cylinder 30 and supports the moving member 32 in the groove 35 via a spring 33 so as to be movable in a direction perpendicular to the rotation axis of the inner cylinder 30. When the moving member 32 is pushed by the special key inserted into the keyhole 31 and moves from the first position to the second position along the groove 35 with the contraction of the spring 33, the special key is removed from the keyhole 31. The spring 33 returns to the first position from the second position by the restoring force of the spring 33. That is, the moving member 32 is in the second position only when the special key is inserted into the keyhole 31.

  FIG. 4 is a diagram illustrating a state where the special key 100 is inserted into the cylinder lock 10. The special key 100 has a tip portion 102 that is shaped to push the exposed portion 32 b of the moving member 32 when inserted into the keyhole 31. When the special key 100 is inserted into the keyhole 31, as shown in FIG. 5, the exposed portion 32b is pushed by the tip portion 102 of the special key 100, and the moving member 32 moves from the first position to the second position.

  FIG. 6A is a diagram illustrating the movement of the moving member 32 when the special key 100 is inserted into the keyhole 31 and the special key 100 is rotated clockwise. FIG. 6B is a diagram illustrating the movement of the moving member 32 when the special key 100 is inserted into the keyhole 31 and the special key 100 is rotated counterclockwise.

  As shown in FIG. 6A, when the special key 100 is rotated clockwise, the first locking portion 32a of the moving member 32 is locked to one wall of the second projecting portion 23, and the rotation of the inner cylinder 30 is prevented. Limit at 3 rotation positions. On the other hand, as shown in FIG. 6B, when the special key 100 is rotated counterclockwise, the first locking portion 32a of the moving member 32 is moved away from the inner surface 25 of the outer cylinder 20, and therefore, at the first rotational position 24b. The first locking portion 32 a of the moving member 32 is not locked to the wall of the first protruding portion 22, and the moving member 32 further rotates counterclockwise together with the inner cylinder 30. And the 1st latching | locking part 32a of the moving member 32 is latched by the other wall of the 2nd protrusion part 23, and restrict | limits the rotation of the inner cylinder 30 in the 2nd rotation position 24c. FIG. 7 is a diagram illustrating a state of the cylinder lock 10 in which the inner cylinder 30 is rotated to the second rotation position 24c using the special key 100. Thus, when the inner cylinder 30 is rotated using the special key 100, the inner cylinder 30 can be rotated to the second rotation position 24c.

  FIG. 8 is a diagram illustrating a state in which the general key 110 is inserted into the cylinder lock 10. The general key 110 has a tip 112 that is shaped so as not to push the exposed portion 32 b of the moving member 32 when inserted into the keyhole 31. Even when the general key 110 is inserted into the keyhole 31, the exposed portion 32b is not pushed by the tip 112 of the general key 110 as shown in FIG. 9, and the moving member 32 remains in the first position. Therefore, the first locking portion 32 a of the moving member 32 protrudes from the side surface of the inner cylinder 30.

  FIG. 10A is a diagram illustrating the movement of the moving member 32 when the general key 110 is inserted into the keyhole 31 and the general key 110 is rotated clockwise. FIG. 10B is a diagram illustrating the movement of the moving member 32 when the general key 110 is inserted into the keyhole 31 and the general key 110 is rotated counterclockwise.

  As shown in FIG. 10A, when the general key 110 is rotated clockwise, the first locking portion 32a of the moving member 32 is locked to one wall of the second projecting portion 23 as in the case of the special key 100. Then, the rotation of the inner cylinder 30 is limited at the third rotation position. On the other hand, as shown in FIG. 10B, when the general key 110 is turned counterclockwise, the first locking portion 32a of the moving member 32 is not moved away from the inner surface 25 of the outer cylinder 20, so The first locking portion 32a of the moving member 32 is locked to the wall of the first protruding portion 22, and restricts the rotation of the inner cylinder 30 at the first rotation position 24b. Therefore, the inner cylinder 30 cannot rotate to the second rotation position 24c. FIG. 11 is a diagram illustrating a state of the cylinder lock 10 in which the inner cylinder 30 is rotated to the first rotation position 24b using the general key 110. As described above, when the inner cylinder 30 is rotated using the general key 110, the inner cylinder 30 can rotate only to the first rotation position 24b.

  As described above, according to the present embodiment, the inner cylinder 30 performs the first rotation indicating the position where the key code can be reset from the reference position 24a indicating the locked state using the general key 110 (or the unique key). It can rotate to position 24b. On the other hand, the inner cylinder 30 can further rotate from the reference position 24a to the second rotation position 24c indicating another position where the key code can be reset using the special key 100. The inner cylinder 30 cannot be rotated to the second rotation position 24c unless the special key 100 is used. Therefore, for example, when the cylinder lock 10 in which the inner cylinder 30 is at the second rotation position 24c is once unlocked by using the general key 110 in the distribution process or the like, the inner cylinder 30 will be returned to a resettable position. Even so, the inner cylinder 30 can rotate only to the first rotation position 24b. That is, the inner cylinder 30 cannot be returned to the second rotational position 24c. Therefore, by determining whether or not the inner cylinder 30 is at the second rotational position 24c, it is possible to determine whether or not there is a possibility that the cylinder lock 10 has been unlocked illegally in a distribution process or the like.

  In the present embodiment, the moving member 32 is pushed by the special key 100 and moves in a direction perpendicular to the rotation axis of the inner cylinder 30, so that the first protrusion 22 is moved when the moving member 32 rotates with the inner cylinder 30. The example to avoid was demonstrated. When the first locking portion 32a is moved away from the inner surface 25 of the outer cylinder 20 by being pushed by the special key 100 and tilted in the direction of the rotation axis of the inner cylinder 30, the moving member 32 is rotated together with the inner cylinder 30. The first protrusion 22 may be avoided.

  Moreover, in this embodiment, the form which moves the movement member 32 from the 1st position to the 2nd position by inserting the special key 100 in the keyhole 31 was demonstrated. However, if the moving member 32 cannot be moved from the first position to the second position by an arbitrary user, the moving member 32 is moved from the first position to the second position by a method other than the method of inserting the special key 100 into the keyhole 31. It may be moved to. For example, a special tool with limited availability that can physically or electrically move the moving member 32 from the first position to the second position may be used. In this case, a special tool may be inserted into the keyhole 31 and used, for example, by pressing a button or the like other than the keyhole 31 with the special tool to physically or electrically move the moving member 32 to the first position. To the second position.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

10 cylinder lock 20 outer cylinder 21 opening 22 first protrusion 23 second protrusion 24a reference position 24b first rotation position 24c second rotation position 25 inner surface 30 inner cylinder 31 key hole 32 moving member 32a first locking part 32b exposed part 32c Second locking portion 33 Spring 34 Fixing portion 35 Groove 40 Base 100 Special key 110 General key

Claims (7)

An outer cylinder having a first protrusion on the inner surface;
An inner cylinder rotatably accommodated in the outer cylinder and having a keyhole;
A first position that is rotatably accommodated in the outer cylinder together with the inner cylinder, is locked to the first protrusion and restricts rotation of the inner cylinder at a first rotation position, and the first protrusion A cylinder lock comprising a moving member that is movable with respect to the inner cylinder between a second position that is not locked and that does not restrict rotation of the inner cylinder at the first rotation position. The outer cylinder has a second protrusion at a position different from the first protrusion on the inner surface,
The moving member in the second position with respect to the inner cylinder further rotates with the inner cylinder without restricting the rotation of the inner cylinder at the first rotation position, and is locked to the second projecting portion. The cylinder lock according to claim 1, wherein the rotation of the inner cylinder is limited at the second rotation position. The cylinder lock can change the key code,
The cylinder lock according to claim 2, wherein each of the first rotation position and the second rotation position is a reset position where a key code can be reset. The second protrusion protrudes higher than the first protrusion from the inner surface of the outer cylinder,
When the moving member moves from the first position to the second position, a portion of the moving member that faces the inner surface of the outer cylinder moves away from the inner surface of the outer cylinder.
The cylinder lock according to claim 2 or claim 3.   The cylinder lock according to any one of claims 1 to 4, wherein the inner cylinder has a groove that movably accommodates the moving member communicated with the key hole. The moving member is supported with respect to the inner cylinder in the groove via an elastic body fixed to the inner cylinder,
The moving member moves from the first position to the second position along the groove along with the contraction of the elastic body by being pushed by the inserting member inserted into the key hole, and the inserting member moves to the key hole. The cylinder lock according to claim 5, wherein the cylinder lock returns from the second position to the first position by a restoring force of the elastic body when pulled out from the first position.   The cylinder lock according to claim 6, wherein the moving member is moved from the first position to the second position by being pushed by a predetermined key inserted into the keyhole as the insertion member.

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