JP2010144484A - Variable code type cylinder lock apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe and secure variable code type cylinder lock apparatus which requires no changing key for each code and in which key and cylinder lock codes are changed automatically for each locking and unlocking operation of the key. <P>SOLUTION: When the key 1 is inserted in the locked cylinder lock 10, tips of the tumbler pins 201C and 201D are inserted into a code hole 3 of the code ring 4 of the key 1 and the cylinder plug 14 and the idling ring 15 are allowed to rotate. When the key 1 is rotated in this state, the fixing ring 401 is rotated and the cylinder plug 14 is rotated to unlock. In this state, the rotating ring 402 and the idling ring 15 do not rotate, the code hole 3 of the rotating ring 402 of the key 1 comes off with respect to the code hole 3 of the fixing ring 401 relatively toward the rotating direction and the code hole 3 of the idling ring 15 of the cylinder lock 10 also comes off to change the code after unlocking. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a variable code cylinder locking device capable of changing a code on a key side and a lock side in association with a key locking / unlocking operation.

As a cylinder lock device used for opening and closing and operation control of various buildings, rooms, various equipment, vehicles, etc., replace the entire lock when the key may be stolen, lost, or forged Instead of changing the key code, the cylinder can be operated by inserting a change key for changing the code or a change key that can also be used for normal locking and unlocking after changing the code. 2. Description of the Related Art Conventionally, a variable code type cylinder lock device that changes a code on the lock side is known (see, for example, Patent Document 1).
JP 2003-201780 A

  However, in the case of the conventional variable code type cylinder lock device, a change key corresponding to each code to be changed is required, and it is necessary to have a large number of keys. In addition, when changing code, you must use the change key every time, so the response of changing the code is bad, and it may take days to change the code. During that time, the key is forged, etc. There was a risk. Further, since the code of the cylinder lock does not change and the code of the key does not change unless it is operated using the change key, it is easy to forge the key.

  The present invention eliminates the need for preparing a change key for each cord, and is a variable code cylinder that is difficult to counterfeit and highly safe because the code of the key and the cylinder lock automatically changes every time the key is unlocked or locked. An object is to provide a locking device.

  The variable code cylinder lock device of the present invention includes a key that can change at least a part of the code, such as a part of the code hole being changed, and a key hole into which the key is inserted. Is a variable code cylinder lock device that can be locked or unlocked by the rotation of a key inserted into the key hole, and the key is inserted into the key hole of the cylinder lock. The code of the key and the code of the cylinder lock are both changed in accordance with the locking operation or the unlocking operation that is inserted and rotated.

  This variable code type cylinder lock device is difficult to counterfeit and highly safe because both the key code and the cylinder lock code change with the locking or unlocking operation of the key. There is no need to prepare.

  The variable code cylinder locking device includes a restricting means for restricting a change in the key code when the key is removed from the key hole, and a restriction for a change in the key code by the restricting means when the key is inserted into the key hole. It is preferable to have restriction release means for releasing

  With this configuration, it is possible to prevent the key code from being changed accidentally when the key is not used.

  Further, in this variable code type cylinder lock device, the key is disposed on the key base and the key base, the code of the key is recorded by the arrangement of the code hole, etc., and at least a part of the key is operated to operate the key. The cylinder lock includes a cylindrical cylinder case, a cylinder plug having a key hole, and a cylinder plug that is rotatably inserted into the cylinder case, and a cylinder. At least a part of the code of the lock due to the arrangement of the tumbler pins, etc., corresponding to the change of the code of the key by being inserted rotatably in the plug and operating in conjunction with the operation of the key code variable setting unit It is preferable to include a lock code variable setting unit that changes.

  With this configuration, the key code and the cylinder lock code can be easily and reliably changed with the locking or unlocking operation of the key.

  In this case, the key code variable setting unit is fixed to the key base, and is attached to the fixing ring in which the code is recorded on the outer peripheral portion and the key base so as to be rotatable in one direction. It is preferable that the lock code variable setting unit operates in conjunction with the operation of the rotation ring.

  With this configuration, the code change accompanying the key locking or unlocking operation can be made simpler and more reliable.

  As described above, the variable code cylinder locking device of the present invention is difficult to counterfeit, high in safety because the key code and the cylinder lock code change together with the key locking or unlocking operation. This provides a useful and remarkable effect in that it is not necessary to prepare a change key for each chord.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a variable cord type cylinder lock device according to an embodiment of the present invention. FIG. 1 is a perspective view of a variable code cylinder locking device in a state where a key is not inserted, FIG. 2 is a schematic diagram of a longitudinal sectional structure of the variable code type cylinder locking device in a key insertion state of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line BB in FIG. 2, and FIG. 5 is a diagram showing the locking state of the variable cord type cylinder locking device in FIG. 1 and the operation of shifting from the locking state to the unlocking state. FIG. 5A is an operation diagram showing the same AA cross section as FIG. 3, FIG. 6B is an operation diagram showing the same BB cross section as FIG. 4, and FIG. The operation | movement which transfers to the unlocking state and operation | movement from this unlocking state to a locked state by this operation | movement is shown, (a) is the operation | movement figure shown by the same AA cross section as FIG. 3, (b) is the same as FIG. FIG. 7 is an operation diagram showing a cross section taken along the line B-B. FIG. 7 is a diagram showing the transition of the variable code cylinder locking device of FIG. The operation | movement which transfers to a locked state and this locked state from an unlocked state is shown, (a) is an operation | movement figure shown by the same AA cross section as FIG. 3, (b) is shown by the same BB cross section as FIG. FIG. 8 is an operation diagram, and FIG. 8 shows the unlocked state shifted by the operation of FIG. 7 and the transition from the unlocked state to the locked state of the variable code cylinder locking device of FIG. 3 is an operation diagram showing the same AA cross section as FIG. 3, and FIG. 4B is an operation diagram showing the same BB cross section as FIG.

  This variable code cylinder locking device has a key 1 in which a code is recorded by arrangement of a cord hole 3 of a cord ring portion 4 to be described later, a key hole 11 into which the key 1 is inserted, and tumbler pins 201A to 201 to be described later. It is comprised with the cylinder lock 10 in which a code | cord | chord is memorize | stored by arrangement | positioning of 201D.

  The key 1 is provided with a holding portion 8 for holding the key 1 by hand behind a cylindrical key base portion 2 inserted into the key hole 11 of the cylinder lock 10.

  The key base portion 2 is provided with a cord ring portion 4 (key code setting portion) that is divided into a plurality of (in the illustrated example, five) portions in the front-rear direction (cylinder axial direction) on the outer periphery. .

  The code ring portion 4 includes a plurality of (two in the illustrated example) fixing rings 401 that are completely fixed to the key base 2 and a plurality of (in the illustrated example) that are rotatably attached to the key base 2 only in one direction. In this case, the fixing ring 401 and the rotating ring 402 are alternately arranged. On the outer peripheral surface of the fixing ring 401 and the rotating ring 402, A plurality of cord holes 3 into which tumbler pins 201A to 201D, which will be described later, are fitted, are provided in an arrangement set for each ring.

  The rotation ring 402 is restricted from rotating in one direction with respect to the key base 2 and is allowed to rotate in the opposite direction. In the illustrated embodiment, the rotation ring 402 is forward (front end) from the rear (holding portion side) of the key 1. ) In a clockwise direction (hereinafter simply referred to as “clockwise”) when viewed toward the side), and rotation is restricted in a counterclockwise direction (hereinafter simply referred to as “counterclockwise”). Rotation is allowed.

  As a means for restricting the rotation in one direction of the rotating ring 402 and allowing the rotation in the opposite direction, a one-way clutch system may be used, and the fixed ring 401 and the rotating ring 402 are opposed to each other. A triangular projection of the same size having an inclined surface on one side in the circumferential direction and a vertical surface perpendicular to the contact surface on the other side, and a projection on one contact surface at the same pitch in the circumferential direction. The protrusions on the other contact surface are provided so that the positions of the triangular inclined surface and the vertical surface are reversed, and the inclined surfaces of the protrusions on both contact surfaces are in sliding contact with each other when rotating in one direction of the rotating ring 402. Thus, the rotation of the rotating ring 401 may be allowed, and the rotation of the rotating ring 402 in the opposite direction may be restricted by contacting the vertical surfaces of the protrusions of both contact surfaces.

  The outer periphery of the key base 2 is provided with a guide groove 21 that extends linearly over substantially the entire area in the front-rear direction of the key and has a hole shape at the large-diameter portion on the rear side of the key (holding portion side). A rod-shaped rotation restricting member 6 (a restricting means) is fitted in the guide groove 21 so as to be slidable in the longitudinal direction of the key between the cord ring body 4 and the guide groove 21.

  The rotating ring 402 is provided with an inner protrusion 403 on the inner peripheral side. A similar inner protrusion 404 is also provided on the fixing ring 401.

  The rotation restricting member 6 is in contact with an inner protrusion 403 provided on the inner peripheral side of the rotating ring 402 to lock the inner protrusion 403 and restrict the rotation of the rotating ring 402, and to rotate the rotating ring 402. An allowance portion 602 that is a notch cut out to a size that does not interfere with the inner protrusion 403 of the rotating ring 402 is provided, and the restricting portion 601 contacts the inner protrusion 403 of the rotating ring 402 to lock the inner protrusion 403. Then, it is possible to slide back and forth between a restricting position for restricting the rotation of the rotating ring 402 and an allowable position for allowing the rotation of the rotating ring 402 by allowing the allowing portion 602 to pass the inner protrusion 403 of the rotating ring 402 in the rotating direction. .

  Then, the rotation restricting member 6 is urged by the spring member 7 from the rear side of the key, and the restricting portion 601 is brought into contact with the inner protrusion 403 of the rotating ring 402 in a state where the rotation restricting member 6 is always slid forward. The restricting position for restricting the rotation of the stop rotating ring 402 is maintained.

  Regardless of the movement position of the rotation restricting member 6, the fixing ring 401 comes into contact with and is engaged with the restricting portion 601 of the rotation restricting member 6.

  Further, the key 1 is formed with a connecting projection 9 that protrudes in the key radial direction and extends forward along the outer peripheral surface of the key base 2 on the front end side of the holding portion 8. The connecting projection 9 is fitted into a connecting hole portion 12 provided in the key hole 11 of the cylinder 10 when the key is inserted, and a cylinder plug 14 described later is interlocked with the rotation of the key 1.

  The cylinder lock 10 is fitted into a cylinder case 13 (outer cylinder), a cylinder plug 14 (inner cylinder) having a key hole 11 into which the key 1 is inserted, and a cylinder plug 14 rotatably inserted into the cylinder case 13. In addition, a plurality of (three in the illustrated example) idling rings 15 that are rotatable in one direction with respect to the cylinder plug 14 at positions corresponding to the rotation ring 402 of the key 1 when the key 1 is inserted are provided. A connecting hole portion 12 into which the connecting protrusion 9 of the key 1 is fitted is provided at both ends of the key hole 11 in the radial direction at the rear end portion of the cylinder plug 14.

  The cylinder plug 14 is formed by combining a pair of semi-cylindrical members divided in a plane including the cylinder axis in a cylindrical shape, and in the center of the end portion on the cylinder front side (front side in the key insertion direction), the cylinder case 13 A rotation support portion 22 that is rotatably supported at the front end portion is provided.

  Inside the cylinder plug 14, a part of the keyhole 11 is formed at a plurality of positions (three locations in the illustrated example) spaced apart from each other in the cylinder axis direction corresponding to the rotary rings 402 when the key is inserted. An idling ring insertion groove 18 is provided in a form in which the diameter is increased. The idling ring 15 is fitted into the plurality of idling ring insertion grooves 18, and rotates in the clockwise direction when viewed from the rear (key rear) to the front (key front) of the cylinder 10 with respect to the cylinder plug 14. Is restricted and rotation in the counterclockwise direction is allowed.

  As a means for restricting the rotation in one direction of the idling ring 15 and allowing the rotation in the opposite direction, a one-way clutch system may be used, and the annular contact surfaces of the cylinder plug 14 and the idling ring 15 facing each other. In addition, the triangular projections of the same size having one inclined surface on one side in the circumferential direction and a vertical surface perpendicular to the contact surface on the other side are arranged at the same pitch in the circumferential direction with the projections on one contact surface and the other contact. The protrusions on the surface are provided so that the positions of the triangular inclined surface and the vertical surface are reversed, and when the idle ring 15 rotates in one direction, the inclined surfaces of the protrusions on both contact surfaces come into sliding contact with each other. The rotation of the idle ring 15 may be permitted, and the rotation of the idle ring 15 in the opposite direction may be restricted by contacting the vertical surfaces of the protrusions of both contact surfaces.

  The inner peripheral portion of the cylinder case 13 corresponds to the position corresponding to the code of the key 1 (the position in the rotational direction) at the position corresponding to the fixing ring 401 when the key is inserted, on the peripheral wall portion of the cylinder plug 14. A plurality of driver holes 160 (two in the illustrated example) are provided with a predetermined angle (a key rotation angle at the time of unlocking and locking), and the driver pins 161I and 161J and the driver pins 161I and 161J are connected to the driver holes 160. The key member 1 is inserted at a position corresponding to the idling ring insertion groove 18 into which the idling ring 15 corresponding to the rotating ring 402 is fitted when the key is inserted. Corresponding to the position corresponding to the code (position in the rotation direction), the driver hole 160 is set at a predetermined angle (key rotation angle when unlocking and locking). A plurality of (eight in the illustrated example) are provided, and driver pins 161A to 161H, and spring members 17 that urge the driver pins 161A to 161H toward the cylinder axis side so as to protrude from the driver hole 160 are provided. Has been inserted.

  In addition, the cylinder plug 14 is in contact with the tip of the rotation restricting member 6 positioned at the tip of the key 1 when the key is inserted, and pushes the rotation restricting member 6 against the spring member 7 to the rear of the key. A rotation restriction release protrusion 19 (restriction release means) is provided. When the key 1 is inserted into the key hole 11 of the cylinder 10, the rotation restricting member 6 is pushed in by the rotation restricting release protrusion 19, and the allowing portion 602 passes the inner protrusion 403 of the rotating ring 402 in the rotating direction so that the rotating ring 402. Move to an allowable position that allows rotation of When the key is inserted, the rotation of the rotating ring 402 is automatically allowed.

  Then, the peripheral wall portion of the cylinder plug 14 is provided on the peripheral wall portion from the inner peripheral side corresponding to the position corresponding to the code of the key 1 (the position in the rotation direction) of the portion corresponding to each fixing ring 401 when the key is inserted. A plurality (two in the illustrated example) of tumbler holes 200 penetrating to the outer peripheral side are provided with a predetermined angle (key rotation angle when unlocked). The tumbler pins 201C and 201D are inserted into the tumbler holes 200 so as to be fitted into the cord holes 3 of the key 1.

  Further, a position corresponding to the code of the key 1 (in the rotational direction) in a portion having the idle ring insertion groove 18 into which the idle ring 15 corresponding to each rotary ring 402 is fitted in the peripheral wall portion of the cylinder plug 14 when the key is inserted. In correspondence with the driver hole 160 of the cylinder case 13, a plurality (eight in the illustrated example) of intermediate holes 300 are provided for each predetermined angle (key rotation angle during unlocking and locking). Then, intermediate pins 301A to 301H located between the driver pins 161A to 161H and the tumbler pins 201A to 201H are inserted into these intermediate holes 300. The length of the intermediate pins 301 </ b> A to 301 </ b> H is substantially the same as the depth of the intermediate hole 300.

  The idle ring 15 corresponds to the position corresponding to the code of the key 1 (position in the rotation direction) at the position corresponding to the rotation ring 402 when the key is inserted, and the driver hole 160 of the cylinder case 13 and the cylinder plug 14 Corresponding to the intermediate hole 300, a plurality (two in the illustrated example) of tumbler holes 200 penetrating the peripheral wall portion from the inner peripheral side to the outer peripheral side are provided at a predetermined angle (key rotation angle at the time of unlocking and locking). Thus, tumbler pins 201A and 201B are inserted so as to be fitted into the code holes 3 of the key 1.

  In the locked position and the unlocked position, the tumbler pins 201C and 201D corresponding to the fixing ring 401 are aligned with either one of the driver pins 161I and 161J, respectively, and the tumbler pins 201A and 201B corresponding to the rotating ring 402 are aligned. These are aligned with any one of the intermediate pins 301A to 301H and any one of the driver pins 161A to 161H.

  When the key 1 with the correct code setting is inserted, the tumbler pins 201A to 201D are fitted into the code holes 3 in the respective parts of the code ring portion 4 of the key 1, and the tumbler pins 201A to 201D at this time are projected. The outer end surfaces of the tumbler pins 201A to 201D and the outer opening surface of the tumbler hole 200 (the outer peripheral surface of the cylinder plug 14 or the idling ring 15) coincide with each other, and the outer end surfaces of the intermediate pins 301A to 301H and the outer opening surface of the intermediate hole 300 ( The outer peripheral surface of the cylinder plug 14 and the inner end surfaces of the intermediate pins 301A to 301H coincide with the inner opening surface of the intermediate hole 300 (the inner peripheral surface of the cylinder plug 14), and the inner end surfaces of the driver pins 161A to 161J and the driver hole 160 The inner opening surface (inner peripheral surface of the cylinder case 13) matches, and the cylinder plug 4 and the rotation of the idle ring 15 is allowed, it is possible to turn the key 1.

  On the other hand, when the code setting of the key 1 is not correct, the code depth and position are different from the code with the correct setting, so that the tumbler pins 201A to 201D protrude to a position that allows the cylinder plug 14 and the idling ring 15 to rotate. Therefore, the outer end surfaces of the tumbler pins 201A to 201D, the outer opening surface of the tumbler hole 200 (the outer peripheral surface of the cylinder plug 14 or the idling ring 15), the outer end surfaces of the intermediate pins 301A to 301H, and the outer opening surface of the intermediate hole 300 (The outer peripheral surface of the cylinder plug 14), the inner end surfaces of the intermediate pins 301A to 301H, the inner opening surface of the intermediate hole 300 (the inner peripheral surface of the cylinder plug 14), the inner end surfaces of the driver pins 161A to 161J and the inner opening of the driver hole 160. Surface (inner peripheral surface of cylinder case 13) does not match, tumbler Down 201 a to 201 d, the intermediate pin 301A～301H, rotation of the cylinder plug 14 and idle ring 15 by the driver pins 161A~161J is restricted, it becomes impossible to turn the key 1. The inner side of each pin refers to the direction toward the center of the cylinder, and the outer side refers to the direction toward the cylinder outer periphery.

  Next, details of the unlocking and locking operation and the code changing operation of the variable code cylinder lock will be described with reference to FIGS.

  First, when the key 1 is inserted and operated to the unlocked state in the locked state shown in FIG. 5, when the key 1 is inserted into the key hole 11 of the cylinder lock 10, the tumbler pins 201 </ b> A to 201 </ b> D are moved to the key hole 11. It is pushed into the tumbler hole 200 from the initial position protruding greatly in the center direction.

  If the code setting of the key 1 is correct, the tips of the tumbler pins 201A to 201D are fitted into the code holes 3 of the portions of the code ring portion 4 of the key 1, and the outer end surfaces of the tumbler pins 201A to 201D and the tumbler holes The outer opening surface of 200 (the outer peripheral surface of the cylinder plug 14 or the idling ring 15) matches, the outer end surface of the intermediate pins 301A to 301H, the outer opening surface of the intermediate hole 300 (the outer peripheral surface of the cylinder plug 14), and the intermediate pins 301A to 301A. The inner end surface of 301H and the inner opening surface of the intermediate hole 300 (the inner peripheral surface of the cylinder plug 14) coincide with each other, and the inner end surfaces of the driver pins 161A to 161J and the inner opening surface of the driver hole 160 (the inner peripheral surface of the cylinder case 13). And the cylinder plug 14 and the idling ring 15 are allowed to rotate. As a result, the key 1 can be rotated.

  When the key 1 is inserted into the key hole 11, the rotation restricting member 6 comes into contact with the rotation restricting release protrusion 19 provided on the cylinder plug 14 and is pushed backward to allow the rotation restricting member 6 to be allowed. The portion 602 moves to the position of the inner protrusion 403 of the rotating ring 402, and the rotating ring 402 is allowed to rotate. In this state, the key 1 can be unlocked by rotating it 45 degrees clockwise.

  That is, when the key 1 is rotated 45 degrees clockwise in this state, the fixing ring 401 rotates clockwise, and accordingly, the tumbler pin fitted into the code hole 3 at the position of the fixing ring 401 of the key 1. 201C and 201D rotate 45 degrees clockwise together with the cylinder plug 14 including the tumbler hole 200 into which the tumbler pins 201C and 201D are inserted. And it is unlocked by rotation of the cylinder plug 14. At that time, the rotation ring 402 of the key 1 is allowed to rotate counterclockwise with respect to the key base 2, and thus remains in the same position without being interlocked with the clockwise rotation of the key 1 (key base The rotation ring 402 is rotated 45 degrees counterclockwise with respect to 2). Further, the idling ring 15 including the tumbler hole 200 into which the tumbler pins 201 </ b> A and 201 </ b> B are inserted also remains in the same position as the rotating ring 402.

  Thus, the unlocked state shown in FIG. 6 is obtained.

  In this variable code type cylinder lock device, when the key 1 is pulled out in the unlocked state, the rotation restricting member 6 that has been pressed against the rotation restricting projection 19 and pushed backward is pressed by the biasing force of the spring member 7. By sliding forward, the restricting portion 601 of the rotation restricting member 6 contacts the inner protrusion 403 of the rotating ring 402 and moves to a position where the inner protrusion 403 is locked to restrict the rotation of the rotating ring 402. Thereby, the code change of the key 1 is regulated.

  When the key 1 is pulled out in the unlocked state, the key 1 is thus positioned relative to the code hole 3 of the fixed ring 401 in comparison with the position before the unlocking. The position of the cord hole 3 at the position of the idling ring 15 on the cylinder lock 10 side is also shifted 45 degrees counterclockwise so that it is unlocked and unlocked. The code changes later.

  Further, when the key 1 is inserted and operated to the locked state in the unlocked state shown in FIG. 6, when the key 1 is inserted into the key hole 11 of the cylinder lock 10, the tumbler pins 201 </ b> A to 201 </ b> D are inserted into the key holes. 11 is pushed into the tumbler hole 200 from the initial position that greatly protrudes in the center direction.

  If the code setting of the key 1 is correct, the tips of the tumbler pins 201A to 201D are fitted into the code holes 3 of the portions of the code ring portion 4 of the key 1, and the outer end surfaces of the tumbler pins 201A to 201D and the tumbler The outer opening surface of the hole 200 (the outer peripheral surface of the cylinder plug 14 or the idling ring 15) matches, the outer end surface of the intermediate pins 301A to 301H, the outer opening surface of the intermediate hole 300 (the outer peripheral surface of the cylinder plug 14), and the intermediate pin 301A. ˜301H and the inner opening surface of the intermediate hole 300 (the inner peripheral surface of the cylinder plug 14) coincide with each other, the inner end surfaces of the driver pins 161A to 161J and the inner opening surface of the driver hole 160 (the inner peripheral surface of the cylinder case 13). ) And the cylinder plug 14 and the idling ring 15 are allowed to rotate. As a result, the key 1 can be rotated.

  When the key 1 is inserted into the key hole 11, the rotation restricting member 6 comes into contact with the rotation restricting release protrusion 19 provided on the cylinder plug 14 and is pushed backward to allow the rotation restricting member 6 to be allowed. The portion 602 moves to the position of the inner protrusion 403 of the rotating ring 402, and the rotating ring 402 is allowed to rotate. In this state, the key 1 can be locked by rotating it 45 degrees counterclockwise.

  That is, in this state, when the key 1 is rotated 45 degrees counterclockwise, the fixing ring 401 rotates counterclockwise, and is fitted into the code hole 3 at the position of the fixing ring 401 of the key 1 accordingly. The tumbler pins 201C and 201D rotate 45 degrees counterclockwise together with the cylinder plug 14 provided with the tumbler holes 200 into which the tumbler pins 201C and 201D are inserted. And it is locked by rotation of the cylinder plug 14. Further, the rotation ring 402 of the key 1 is allowed to rotate in the counterclockwise direction with respect to the key base 2, but the clockwise rotation is restricted. Accordingly, it rotates 45 degrees counterclockwise. Further, the idling ring 15 including the tumbler hole 200 in which the tumbler pins 201A and 201B are inserted also rotates 45 degrees counterclockwise.

  Thus, the locked state shown in FIG. 7 is obtained.

  When the key 1 is pulled out in this locked state, the rotation restricting member 6 that is in contact with the rotation restricting projection 19 and pushed backward is slid to the front of the key by the biasing force of the spring member 7, and the rotation restricting member 6 is rotated. The restricting portion 601 of the member 6 abuts on the inner protrusion 403 of the rotating ring 402 and moves to a position where the inner protrusion 403 is locked to restrict the rotation of the rotating ring 402. Thereby, the code change of the key 1 is regulated.

  When the operation from the locked state in FIG. 7 to the unlocked state is performed, the fixing ring 401 rotates clockwise in the same manner as the unlocking operation from the locked state in FIG. 5, and accordingly, the fixing ring 401 of the key 1 is rotated. The tumbler pins 201C and 201D fitted in the cord hole 3 at the position of are rotated 45 degrees clockwise together with the cylinder plug 14 including the tumbler holes 200 into which the tumbler pins 201C and 201D are inserted, and unlocked. The unlocked state shown in FIG. 8 is obtained.

  Then, when the key 1 is removed in this state, the key 1 also has the relative position of the cord hole 3 of the rotating ring 402 relative to the cord hole 3 of the fixing ring 401 counterclockwise as compared to before unlocking. The position of the cord hole 3 at the position of the idling ring 15 on the cylinder 10 side is also shifted 45 degrees counterclockwise, and the code changes before and after unlocking. .

  Thus, when the key 1 is pulled out in the locked state, the code setting of the key 1 does not change compared to before the locking, and the relative position of the code hole 3 of the rotating ring 402 with respect to the code hole 3 of the fixed ring 401. The code setting does not change before and after locking. That is, when a key is inserted in a locked state, an unlocking operation is performed, and then a series of operations such as a locking operation is performed, first, the unlocking operation maintains the code of the position of the fixing ring 401 as it is, and the rotating ring The code at the position 402 is shifted by 45 degrees in the counterclockwise direction. In the subsequent locking operation, the codes at the positions of the fixing ring 401 and the rotating ring 402 are maintained as set at the time of the unlocking operation. When this series of unlocking and locking operations is repeated, only the code at the position of the rotating ring 402 is shifted by 45 degrees, and the code changes.

  In this embodiment, the rotation allowable direction of the rotating ring 402 is counterclockwise and the rotation restricting direction is clockwise. However, the rotation allowable direction of the rotating ring 402 is clockwise and the rotation restricting direction is counterclockwise. The code may not be changed when the key 1 is locked, and the code may be changed when the key 1 is unlocked.

  Further, the rotation angle of the locking / unlocking operation is not limited to 45 degrees, and can be appropriately changed, for example, 90 degrees, 180 degrees, 360 degrees, and the like.

  In the present embodiment, the fixing ring 401 and the rotating ring 402 of the key 1 are alternately arranged. However, the rotating ring 402 may be arranged continuously. Also in this case, the idling ring 15 of the cylinder lock 10 is provided at a position where the rotation ring 402 of the key 1 is disposed when the key 1 is inserted.

  In addition, the allowable portion 602 is rotated only when the key 1 is pushed backward by a predetermined distance within the operation range of the sliding operation in the front-rear direction of the rotation restricting member 6 that restricts the rotation of the rotation ring 402 of the key 1. Only when the rotation restricting member 19 is pushed by the predetermined distance by projecting the rotation restricting release protrusion 19 on the cylinder lock 10 side by this predetermined distance. Even if an operation of pushing the rotation restricting member 6 of the key 1 by mischief is performed by rotating the rotation restriction of the one rotating ring 402, the rotation is not performed unless the predetermined distance is pushed. Even if the regulating member 6 is pushed too far to the rear side of the key 1 or the pushing is not sufficient, the allowable portion 602 is disengaged from the position of the inner protrusion 403 of the rotating ring 402, and the rotating ring Rotation restriction of 402 is prevented from being released, by mischief or erroneous operation can be prevented from rotation regulating of the rotating ring 402 is released.

It is a perspective view of the key non-insertion state of the variable code type cylinder lock device concerning one embodiment of the present invention. It is a schematic diagram of the longitudinal cross-section of the key insertion state of the variable code | cord | chord cylinder locking apparatus of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. FIG. 1 shows the locked state of the variable code type cylinder locking device of FIG. 1 and the operation of shifting from the locked state to the unlocked state, wherein (a) is an operation diagram showing the same AA cross section as FIG. It is an operation | movement figure shown by the same BB cross section as FIG. 1 shows the unlocked state transferred by the operation of FIG. 5 and the operation of shifting from the unlocked state to the locked state of the variable code cylinder locking device of FIG. 1, wherein (a) is the same AA cross section as FIG. FIG. 5B is an operation diagram showing the same BB cross section as FIG. 1 shows the locked state shifted by the operation of FIG. 6 and the operation of shifting from the locked state to the unlocked state of the variable code type cylinder locking device of FIG. 1, wherein (a) is the same AA cross section as FIG. FIG. 5B is an operation diagram showing the same BB cross section as FIG. 1 shows the unlocked state transferred by the operation of FIG. 7 and the operation of shifting from the unlocked state to the locked state of the variable code type cylinder lock device of FIG. 1, wherein (a) is the same AA cross section as FIG. FIG. 5B is an operation diagram showing the same BB cross section as FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key 2 Key base 3 Code hole 4 Code ring part 401 Fixing ring 402 Rotation ring 403 Inner protrusion 404 Inner protrusion 6 Rotation restricting member 601 Restriction part 602 Permissible part 7 Spring member 8 Holding part 9 Connection protrusion 10 Cylinder lock 11 Key hole 12 Connecting hole portion 13 Cylinder case 14 Cylinder plug 15 Idle ring 160 Driver hole 161A-J Driver pin 17 Spring member 18 Idle ring insertion groove 19 Rotation restriction release protrusion 21 Guide groove 200 Tumbler hole 201A-201D Tumbler pin 300 Intermediate hole 301A-301H Intermediate pin

Claims (4)

At least a part of the code can be changed and a key hole into which the key is inserted. At least a part of the code can be changed, and can be locked or unlocked by rotation of the key inserted into the key hole. A variable code type cylinder locking device comprising a cylinder lock,
A variable code characterized in that both the code of the key and the code of the cylinder lock change in accordance with the locking operation or the unlocking operation in which the key is inserted into the keyhole of the cylinder lock and rotates. Type cylinder locking device. Restriction means for restricting the change of the code of the key when the key is removed from the key hole, and restriction for releasing the restriction of the change of the code of the key by the restriction means when the key is inserted into the key hole The variable code cylinder locking device according to claim 1, further comprising a releasing means. The key includes a key base, a key code variable setting unit that is disposed in the key base, records a key code, and changes at least a part of the key code by operating at least a part of the key. With
The cylinder lock has a cylindrical cylinder case, the key hole, a cylinder plug that is rotatably inserted into the cylinder case, and is rotatably inserted into the cylinder plug. 3. A lock code variable setting unit, wherein the lock code variable setting unit changes at least a part of the code of the lock in response to a change in the code of the key by operating in conjunction with the operation of the unit. The variable code cylinder lock device described. The key code variable setting unit is fixed to the key base, and is attached to a fixing ring in which a code is recorded on the outer peripheral part, and is rotatably attached to the key base in one direction, and a code is recorded on the outer peripheral part. 4. The variable code cylinder lock device according to claim 3, wherein the lock code variable setting section operates in conjunction with the operation of the rotary ring.

Images