JP2008101372A - Protective device of cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance operability during an inner-cylinder pushing operation by enhancing the operability in such a manner that a mechanical key is held in the retractable state in a key case provided with a magnet, in a protective device of a cylinder lock which comprises a shutter mechanism arranged with a shutter plate ahead of an inner cylinder, and a magnet lock capable of performing locking so as to disable the actuation of the shutter mechanism in the state of locating the shutter plate in a closed position. <P>SOLUTION: The shutter mechanism 54, which is unitized with a rotational member 57 making the shutter plate 58 operated between opening and closing positions, is inserted into a cylinder body 16 in such a manner as to be slidable in a direction along the axis line of the inner cylinder 28. The magnet 84 capable of unlocking the magnet lock 55 is provided in the key case 85 which enables the rotating operation of the rotational member 57 in the state of being fitted into the rotational member 57, and a mechanical key 31 is retractably held in the key case 85. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a cylinder body in which an inner cylinder having a key hole is inserted so as to be capable of axial movement and rotation, an open position that allows insertion of a mechanical key into the key hole, and the mechanical key into the key hole. A shutter mechanism disposed in the cylinder body having a shutter plate disposed in front of the inner cylinder and capable of operating between closed positions that prevent insertion of the shutter, and the shutter plate in the closed position The shutter mechanism can be locked so that the operation of the shutter mechanism is disabled in the state and is unlocked in accordance with the proximity of the magnet in the locked state to open the shutter plate. The present invention relates to a protection device for a cylinder lock provided with a magnet lock that enables operation of the cylinder lock.

Cylinder in which the mechanical key is inserted into the key hole of the inner cylinder by operating the shutter mechanism disposed in front of the inner cylinder rotatably accommodated in the cylinder body to the open position with the magnetic lock unlocked. A lock protection device is known from US Pat.
Japanese Patent No. 3577453

  However, in the one disclosed in Patent Document 1, a magnet is provided in the gripping portion of the mechanical key, the magnet lock is unlocked with the gripping portion facing the cylinder lock, and the shutter plate is opened. During the unlocking operation of the cylinder lock, it is necessary to change the mechanical key so that it is directed toward the cylinder lock to be inserted into the key hole, and it is difficult to say that the operability is excellent. Therefore, the present applicant arranges a magnet in a key case that holds the mechanical key so as to be retractable, and causes the mechanical key to protrude from the key case and be inserted into the key hole while the magnetic lock is unlocked. This has already been proposed in Japanese Patent Application No. 2006-068141. However, in the proposed structure, a shutter mechanism arranged in front of the inner cylinder is fixedly arranged on the cylinder body, and a key case is used for application to a cylinder lock that needs to push the inner cylinder. It is necessary to operate so as to increase the protruding amount of the mechanical key from the head, and there is a problem in operability.

  The present invention has been made in view of such circumstances, and has improved operability by holding a mechanical key in a key case in which a magnet is provided so as to be able to appear and retract, and operability when pushing an inner cylinder. It is an object of the present invention to provide a cylinder lock protection device having an improved height.

  In order to achieve the above object, the invention according to claim 1 allows a cylinder body in which an inner cylinder having a key hole is inserted so as to be capable of axial movement and rotation, and insertion of a mechanical key into the key hole. And a shutter plate disposed in front of the inner cylinder to enable operation between an open position to be closed and a closed position to prevent insertion of the mechanical key into the key hole. The shutter mechanism and the shutter plate can be locked so that the operation of the shutter mechanism is disabled in a state where the shutter plate is in the closed position and unlocked according to the proximity of the magnet in the locked state. A cylinder lock provided with a magnet lock that enables the shutter mechanism to operate so that the shutter plate is in the open position. In the apparatus, the apparatus is unitized with a rotating member that is rotatable about the same axis as the inner cylinder and that operates the shutter plate between the open position and the closed position according to the rotation. A shutter mechanism is inserted into the cylinder body so as to be able to slide in a direction along the axis of the inner cylinder so as to apply a pressing force from the front to the inner cylinder, and can be fitted into and removed from the rotating member. And the magnet lock can be unlocked in a state in which the key case is fitted to the turning member. The key case is in a state in which the rotating member is rotated so that the shutter plate is in the open position. The mechanical key is characterized in that it is held retractably a Nikaruki as possible to be protruded so as to inserted into the key hole.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the fitting recess that allows the key case to be fitted into the turning member so that the key case cannot be rotated relative to the turning member. The projection formed on at least one part of the fitting recess and projecting from the rotating member operates the shutter plate from the open position to the closed position when the magnet lock is unlocked. The rotating member is formed in a shape that can be gripped so as to be manually operated.

  According to the first aspect of the present invention, when the key case that holds the mechanical key so as to be retractable is fitted to the rotating member of the shutter mechanism in the storage state of the mechanical key, the magnet lock is provided by the magnet provided in the key case. Since the unlocking is performed, the shutter plate can be moved to the open position by the key case, and in this state, the mechanical key can be protruded from the key case and inserted into the key hole of the inner cylinder. That is, it is possible to open the shutter mechanism and insert the mechanical key into the key hole while keeping the key case fitted to the rotating member of the shutter mechanism, and to unlock the cylinder lock with the mechanical key. Therefore, it is not necessary to change the mechanical key and key case, and the operability can be improved. Moreover, when pushing the inner cylinder, it is only necessary to push the key case together with the mechanical key, and the key case can push the inner cylinder from the front via the shutter mechanism, pushing the inner cylinder. The operability at the time of doing can be improved.

  According to the second aspect of the present invention, when the key case is detached from the fitting recess of the rotating member in the opened state of the shutter plate, the protrusion that forms at least a part of the fitting recess is gripped and rotated. By operating the shutter, the shutter plate can be operated from the open position to the closed position, and an operation of re-fitting the key case into the fitting recess is not necessary.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 19 show an embodiment of the present invention. FIG. 1 is a sectional view of a cylinder lock and a key unit, and is a sectional view taken along line 1-1 of FIG. 2, and FIG. 1 is a front view of the key unit omitted in the closed position, FIG. 3 is a sectional view of the cylinder lock and the key unit taken along line 3-3 in FIG. 2, and FIG. 4 is closed. FIG. 5 is a cross-sectional view of the vicinity of the shutter mechanism in the state taken along line 4-4 in FIG. 2, and FIG. 5 is a cross-sectional view of the vicinity of the shutter mechanism and the magnet lock in the closed state as viewed from a direction substantially corresponding to FIG. 6 is an exploded perspective view of the shutter mechanism, FIG. 7 is a cross-sectional view showing the shutter mechanism in the open state at the locked position along the line 7-7 in FIG. 3, and FIG. 8 is the shutter mechanism in the closed state at the locked position. FIG. 7 is a cross-sectional view corresponding to FIG. 9 is a sectional view taken along line 9-9 in FIG. 4, FIG. 10 is an exploded perspective view of the key unit, FIG. 11 is a longitudinal sectional view of the key unit, and is a sectional view taken along line 11-11 in FIGS. 12 is a sectional view taken along line 12-12 of FIG. 11, FIG. 13 is a sectional view taken along line 13-13 of FIG. 11, FIG. 14 is a sectional view corresponding to FIG. 11 with the mechanical key protruding from the key case, and FIG. Fig. 16 is a front view of the cylinder lock in a state where the inner cylinder is in the locked position and the shutter plate is in the closed position and the key unit is omitted, and Fig. 16 is the inner cylinder in the locked position and the shutter plate is in the open position. FIG. 17 is a diagram corresponding to FIG. 15 in a state where the inner cylinder is in the off position and the shutter plate is in the closed position, and FIG. 18 is a diagram corresponding to FIG. 15 in the state where the inner cylinder is in the off position. It corresponds to FIG. 15 in a state where a plate is open position, FIG 19 is a view corresponding to Figure 15 in a state where the inner cylinder is in the ON position.

  1 to 3, a cylinder body 16 of a cylinder lock 15 is attached to, for example, a steering column (not shown) of a motorcycle, and a front end portion (the left end portion in FIGS. 1 and 3) of the cylinder body 16 is attached. ) Is integrally provided with a cylindrical portion 16a that is open toward the front, and a flange that projects radially outward at a plurality of, for example, two locations spaced apart in the circumferential direction of the outer periphery of the rear portion of the cylindrical portion 16a. 16b and 16b are integrally projected. The front end portion of the cylinder body 16, that is, the cylindrical portion 16a is covered with a cylindrical body cover 17 having an inward flange portion 17a projecting inward in the radial direction from the front end of the cylindrical portion 16a. Are attached to both flange portions 16b of the cylinder body 16 by screw members 18, 18, and the cylinder is formed at the inner periphery of the inward flange portion 17a at the front end of the body cover 17. A circular opening 19 having a smaller diameter than the portion 16a and coaxial with the cylindrical portion 16a is formed.

  Referring to FIGS. 4 and 5 together, the front portion of the cylinder body 16 is provided with first to third holes 21 to 23 having a diameter that gradually decreases inward in the axial direction. The rotor portion 28a of the inner cylinder 28 is fitted into the third hole 23 so as to be able to slide in the axial direction and rotate around the axis. As clearly shown in FIG. 2, the inner cylinder 28 sequentially occupies the lock position P1, the off position P2, and the on position P4 on the condition that a push operation is involved when rotating between the lock position P1 and the off position P2. It is possible to rotate, and to be pushed and operated at the seat lock unlocking position P3 set at an intermediate portion between the off position P2 and the on position P4. Is done.

  The rotor portion 28a of the inner cylinder 28 is provided with a bottomed key hole 29 that is formed in a rectangular cross section by opening the front end and closing the rear end. On the other hand, an engagement groove 30 extending in the axial direction is provided on the inner surface of the third hole 23 in the cylinder body 16, and when the inner cylinder 28 is in the lock position P1 or the off position P2, the regular mechanical key 31 is inserted into the key hole. A plurality of tumblers 32 that release the engagement with the engagement groove 30 in response to the insertion into the engagement groove 30 are elastically biased in a direction to engage with the engagement groove 30. It arrange | positions at the rotor part 28a.

  A cap 49 made of a high-hardness material is attached to the front portion of the inner cylinder 28 so as not to block the front end opening portion of the key hole 29. In addition, the inner cylinder 28 is inserted into the second hole 22 so as to be opposed to the annular receiving step 24 formed in the cylinder body 16 between the second hole 22 and the third hole 23 and facing the front from the front. The flange portion 28e protrudes integrally outward so as to project outward in the radial direction.

  Further, a protrusion 28f connected to the flange 28e from the rear is projected on the outer periphery of the front part of the inner cylinder 28. The protrusion 28f forcibly pushes the inner cylinder 28 at the lock position P1 by unauthorized means. In this case, the inner cylinder 28 is prevented from rotating by engaging with the engaging groove 30 of the cylinder body 16.

  In FIGS. 1 and 3 again, a connecting shaft portion 28 b is integrally provided at the rear end of the inner cylinder 28. On the other hand, a switch case 34 of an ignition switch 33 is attached to the rear portion of the cylinder body 16, and the connecting shaft portion 28b is rotated relative to a connecting cylinder portion 35a provided integrally with a contact holder 35 provided in the ignition switch 33. It is possible to slide in the axial direction while disabling. Between the retainer 36 attached to the connecting shaft portion 28b and the contact holder 35, a coiled spring 37 surrounding the connecting tube portion 35a and the connecting shaft portion 28b is contracted, and the connecting shaft portion 28b, that is, the inner member. The cylinder 28 is elastically biased toward the front side (the left side in FIGS. 1 and 3). Moreover, a click mechanism 38 is provided between the cylinder body 16 and the contact holder 35 to give a sense of moderation to the rotation of the contact holder 35 according to the rotation of the inner cylinder 28.

  An intermediate portion of the lever 40 is rotatably supported by the cylinder body 16 in front of the ignition switch 33 via a support shaft 39 having an axis along a plane including the rotation axis of the inner cylinder 28. By the way, a seat for a passenger that can maintain a seating state of an occupant by a seat lock mechanism is attached to the motorcycle body so as to be openable and closable. A cable 41 for releasing is connected to one end of the lever 40. In addition, a pressing arm portion 28c that can apply a pressing force to the other end of the lever 40 in response to a push operation of the inner cylinder 28 in the seat lock unlocking position P3 is provided integrally with the inner cylinder 28, When the inner cylinder 28 is pushed at the seat lock unlocking position P3, the lever 40 is rotated in the clockwise direction in FIG. 3 by the pressing arm 28c, whereby the cable 41 is pulled and the seat lock mechanism is locked. It will be released.

  A lock pin 43 is supported on the cylinder body 16 in front of the pressing arm portion 28c so as to be slidable in a plane perpendicular to the axis of the inner cylinder 28, and between the lock pin 43 and the cylinder body 16. In the cylinder body 16, a return spring 44 that exerts a resilient force that biases the lock pin 43 toward the side in which the lock pin 43 is drawn is contracted. In addition, the lock pin 43 is connected to the inner cylinder 28 so as to switch between allowing and preventing the steering operation in accordance with the rotation of the inner cylinder 28. That is, the lock pin 43 is attached with a connecting member 46 having a connecting hole 45 through which the crank portion 28d integrally formed with the inner cylinder 28 is inserted, and the inner cylinder 28 rotates between the lock position P1 and the off position P2. As a result, the lock pin 43 is driven to slide. Thus, the lock pin 43 that was in the protruding position to prevent the steering operation at the lock position P1 of the inner cylinder 28 is retracted to allow the steering operation at the off position P2.

  With reference to FIGS. 6 to 8 as well, in the front portion of the cylinder body 16, a state in which the mechanical key 31 is allowed to be inserted into the key hole 29 provided in the inner cylinder 28 and the mechanical key into the key hole 29 are provided. A shutter mechanism 54 that can switch the state of preventing the insertion of 31 when the magnet lock 55 is unlocked is provided.

  The shutter mechanism 54 has an insertion hole 56 that allows the mechanical key 31 to be inserted into the key hole 29 of the inner cylinder 28, and the inner cylinder 28 is operated in response to a turning operation when the magnet lock 55 is unlocked. A rotation member 57 that rotates about the same axis as the rotation axis, and a position that opens the insertion hole 56 according to the rotation of the rotation member 57 and a position that closes the entire insertion hole 56 are moved. In this way, the shutter plate 58 is provided with a shutter plate 58 interlocked and connected to the rotating member 57 and a through hole 61 having a rectangular cross section corresponding to the key hole 29 of the inner cylinder 28 at the center. A holder 59 for supporting and a ring member 60 for sandwiching the holder 59 between the rotating member 57 and a first hole 2 of the cylinder body 16 in front of the inner cylinder 28. It is housed in.

  The rotating member 57 is formed in a cylindrical shape with a disk-shaped rotating member main portion 57a and an axially intermediate portion connected to the outer periphery of the rotating member main portion 57a at right angles. A large-diameter fitting cylindrical portion 57b that is slidably fitted into the first hole 21 of the front portion and an annular regulating step portion 57c that can abut against the inwardly-facing flange portion 17a of the front end of the body cover 17 has a large diameter. It is formed between the front end of the fitting cylinder part 57b, is flush with the inner periphery of the front end of the large diameter fitting cylinder part 57b and coaxially and is slidably fitted into the inward flange part 17a. An annular stepped portion 57f is formed between the small-diameter fitting tube portion 57d and the rear end of the large-diameter fitting tube portion 57b to be flush with and coaxial with the outer periphery of the rear end of the large-diameter fitting tube portion 57b. And the thin-walled cylindrical portion 57e that are continuous with each other.

  Further, on the back surface of the rotation member main portion 57a of the rotation member 57, a cylindrical tube portion 57g that forms the insertion hole 56, and an inner end connected to the tube portion 57g, the rotation member main portion. A guide portion 57 h extending to the outer peripheral side of 57 a is integrally projected, and the guide portion 57 h forms an arcuate guide groove 62.

  The thin cylindrical portion 57e is caulked and coupled to the outer peripheral portion of the ring plate 60 in contact with the stepped portion 57f of the rotating member 57, and the ring plate 60 is fixed to the rotating member 57. In addition, the holder 59 that supports the shutter plate 58 is disposed between the rotation member main portion 57a of the rotation member 57 and the ring plate 60, and is accommodated in the rear portion of the large-diameter fitting tube portion 57b. Yes, relative rotation with the rotation member 57 is possible.

  The holder 59 is fitted to the rear part of the large-diameter fitting cylinder part 57b so as to face the turning member main part 57a of the turning member 57 from the rear side, and is slidably fitted to the center part. A disk part 59a provided with a through hole 61 and two points spaced apart in the circumferential direction of the disk part 59a are provided at right angles to the outer periphery of the disk part 59a and penetrate the ring plate 60. And a pair of engaging leg portions 59b extending to the inner cylinder 28 side.

  The disc portion 59a comes into contact with the cap 49 attached to the flange portion 28e of the inner cylinder 28 from the front, and both the engaging leg portions 59b are connected to the front portion of the inner cylinder 28 as shown in FIG. Are inserted into and engaged with notches 27 provided in the flange 28e. Therefore, when the tumblers 32 are engaged with the engagement grooves 30 of the cylinder body 16 so that the inner cylinder 28 is prevented from rotating, the holder 59 is also prevented from rotating.

  That is, the shutter mechanism 54 is unitized so that the holder 59 for supporting the shutter plate 58 is accommodated between the rotating member 57 and the ring plate 60 fixed to the rotating member 57. The formed shutter mechanism 54 is inserted into the cylinder body 16 so as to be able to slide in the direction along the axis of the inner cylinder 28 so as to apply a pressing force from the front to the inner cylinder 28.

  The shutter plate 58 is disposed between the insertion hole 56 and the through hole 61 of the rotating member 57, and the shutter plate 58 is slidably fitted along the radial direction of the insertion hole 56. A guide recess 63 is provided on the front side of the disc portion 59a so that the inner end portion is disposed at a substantially central portion of the disc portion 59a and the outer end portion is opened to the outside at the outer periphery of the disc portion 59a. The through hole 61 is disposed at the inner end of the guide recess 63.

  The shutter plate 58 slidably fitted in the guide recess 63 of the holder 59 is provided with an engaging shaft 64 protruding toward the rotating member 57, and the engaging shaft 64 is connected to the rotating member 57. It is engaged with an arcuate guide groove 62 formed in the connecting portion 57h. Thus, when the rotation member 57 is rotated in a state where the holder 59 is at the stationary position and the rotation operation of the rotation member 57 is allowed, the shutter plate follows the rotation of the rotation member 57. 58 slides within the guide recess 63, and when the magnet lock 55 is in the locked state, the entire insertion hole 56 of the rotating member 57 is closed to prevent the mechanical key 31 from being inserted into the key hole 29. It is possible to slide between the position shown in FIG. 8 and the open position (position shown in FIG. 7) in response to the turning operation of the turning member 57 in the released state of the magnet lock 55. The insertion hole 56 is opened to allow the mechanical key 31 to be inserted into the key hole 29 at the opening position of the shutter plate 58.

  By the way, a spring 65 is contracted between the holder 59 and the cylinder body 16, and when the external force is not applied to the shutter mechanism 54 from the front, the shutter mechanism 54 has a large-diameter fitting provided in the rotating member 57. This is the forward position where the regulation stepped portion 57c at the front end of the combined tube portion 57b is brought into contact with the inward flange portion 17a at the front end of the body cover 17.

  A cover 66 that allows sliding between a position where the front end of the key hole 29 is closed and a position where the front end of the key hole 29 is opened is attached to the front end portion of the inner cylinder 28. In the meantime, a spring 67 that biases the cover 66 toward the side of closing the front end of the key hole 29 is contracted. Thus, the inner end of the cover 66 is provided with an inclined surface 66a for sliding the cover 66 to the side where the key hole 29 is opened by being pushed by the tip of the mechanical key 31.

  Referring again to FIG. 2, the shutter plate 58 is separated from the open position PO with the insertion hole 56 opened when the inner cylinder 28 and the holder 59 are in the locked position P1 by an angle α, for example, 27 degrees. Is the closed position PS when the rotating member 57 is rotated to the opposite side, and the open position PO when the inner cylinder 28 is in the off position P2 is the on position P4 by an angle α from the open position PO. When the turning member 57 is turned to the opposite side, the closed position PS is reached.

  Further, a projecting portion 59c that protrudes toward the rotating member main portion 57a of the rotating member 57 protrudes from the disc portion 59a of the holder 59 outside the closed end of the guide recessed portion 63. 59c is provided with a bottomed spring accommodating hole 71 that opens to face the rotating member main portion 57a, and a coiled spring 72 that makes one end abut against the closed end of the spring accommodating hole 71 is a spring. It is accommodated in the accommodation hole 71. On the other hand, on the surface of the rotating member main portion 57a facing the protrusion 59c, the engaging recesses 73 and 74 that are recessed in a triangular shape are rotated so as to be arranged at the positions shown in FIGS. The members 57 are provided at intervals in the circumferential direction. In addition, a state in which the spring is accommodated in the spring accommodating hole 71 and one of the engaging recesses 73 and 74 are selectively engaged with a substantially half portion and the remaining substantially half portion is engaged with the spring accommodating hole 71. A click ball 75 that can be switched between states is brought into contact with the other end of the spring 72.

  Thus, one of the engaging recesses 73 and 74 is disposed at a position where the half of the click ball 85 is engaged when the rotating member 57 is in the closed position PS, and the other engaging recess 74 is engaged. Is arranged at a position where the substantially half of the click ball 75 is engaged when the rotation member 57 is at the open position PO. The rotation member 57 is moderate between the closed position PS and the open position PO. Will rotate.

  In addition, the disc portion 59a of the holder 59 is integrally provided with a restricting protrusion 59d that protrudes radially outward at a position corresponding to the open end of the guide recess 63, and the restricting protrusion 59d is a rotating member. 57 is inserted into a notch 76 provided at the rear end of the large-diameter fitting cylinder portion 57b. Therefore, the relative rotation range of the rotation member 57 and the holder 59 is restricted to a range in which the restriction protrusion 59 d can be displaced in the notch 76, and the rotation member 57 is in relation to the holder 59. Thus, it does not rotate in a large range exceeding between the closed position PS and the open position PO.

  Further, a pair of raised portions 59e and 59f raised so as to approach and face the rotating member main portion 57a from the disc portion 59a of the holder 59 on both sides of the guide recess 63 are integrally provided on the disc portion 59a. The magnet lock 55 is provided between the pivot member main portion 57a of the pivot member 57 and the raised portions 59e and 59f.

  The raised portions 59e and 59f are provided with a pair of bottomed sliding holes 77 that are open to the rotating member main portion 57a side so as to be arranged at symmetrical positions with respect to the center of the holder 59. When the shutter mechanism 54 is in a closed state that prevents the mechanical key 31 from being inserted into the key hole 29, the surface facing the raised portions 59 e and 59 f of the rotating member main portion 57 a is formed in each of the sliding holes 77. Two pairs of engaging recesses 78 are individually provided corresponding to each other. Moreover, the interval between the sliding holes 77... And the interval between the engaging recesses 78.

  In addition, O-rings 79 and 80 are fitted to the raised portions 59e and 59f so as to surround a portion where the sliding holes 77 are arranged, and these O-rings 79 and 80 are respectively connected to the raised portions 59e and 59f. 59f and the pivot member main portion 57a of the pivot member 57.

  The sliding hole 77 selected from the sliding holes 77, in this embodiment, one of the pair of sliding holes 77 provided in one raised portion 59e, and the other raised portion 59f. Both of the pair of sliding holes 77 are slidably fitted with rod-shaped magnets 81 so that the magnetic poles are arranged in an appropriate combination. Between the magnets 81, there are interposed springs 82 for urging the magnets 81 to protrude from the raised portions 59e and 59f.

  Thus, when the shutter mechanism 54 is in a closed state where the insertion hole 56 and the through hole 48 are blocked by the shutter plate 58, a part of the magnets 81 are formed in the engagement recesses 78 on the rotating member 57 side. Of these, the engaging recesses 78 are engaged with each other, and in this state, the rotating operation of the rotating member 57 with respect to the holder 59 is prevented.

  Referring to FIGS. 10 to 13 together, the magnets 84 for performing the locking / unlocking operation of the magnet lock 55 are detachably fitted to the rotating member 57 and in the fitted state. A key unit is provided in a key case 85 that allows the rotation member 57 to be rotated. The key unit includes the key case 85 and the mechanical key 31 that is held in the key case 85 so as to be retractable. 86 is configured.

  The key case 85 has a long sheath along the longitudinal direction of the mechanical key 31 so that the first and second case members 88 and 89 made of synthetic resin are joined to each other so that the entire mechanical key 31 can be accommodated. The mechanical key 31 is slidably held between the first and second case members 88 and 89.

  At one end of the first case member 88, a wall 90 serving as an end wall on the side facing the cylinder lock 15 of the key case 85 is provided at right angles and integrally so as to cover one end of the second case member 89. By the way, the mechanical key 31 is held by a key case 85 that is long along the longitudinal direction of the mechanical key 31 so as to be slidable along the central axis C of the key case 85. The central axis C A rectangular through hole 91 for allowing the mechanical key 31 to appear and disappear is provided at the center of the wall 90 so that the mechanical key 31 can be inserted therethrough.

  In the key case 85, a lever 92 that is rotatably supported by a support shaft 93 provided on the first case member 88 of the key case 85 is disposed between the mechanical key 31 and the first case member 88. It is accommodated as such. Thus, the other end of the lever 92 is connected to the mechanical key 31 on the opposite side of the support shaft 93 with respect to the central axis C, and a long hole-like connection provided on the other end of the lever 92. A connecting pin 95 inserted through the mechanical key 31 from the second case member 89 side is inserted into and engaged with the hole 94.

  The protruding end portion of the connecting pin 95 from the lever 92 is inserted into a guide groove 96 provided on the inner surface of the first case member 88, and the guide groove 96 is elongated along the central axis C of the key case 85. It is formed to extend. Thus, as the lever 92 rotates about the axis of the support shaft 93, the connecting pin 95 moves along the guide groove 96 while being displaced within the connecting hole 94 of the lever 92. 11, when the connecting pin 95 is located at the end of the guide groove 96 opposite to the wall 90, the mechanical key 31 is accommodated in the key case 85, and as shown in FIG. When 95 is located at the end of the guide groove 96 on the wall 90 side, the mechanical key 31 protrudes from the key case 85.

  An operation knob 97 disposed on the key case 85 is coupled to the intermediate portion of the lever 92 so that a manual slide operation in a direction parallel to the slide direction of the mechanical key 31 is possible. 97 is disposed between a pivot portion of the end portion of the lever 92 to the key case 85, that is, the support shaft 93, and the central axis C of the key case 85, and is slidably contacted with the outer surface of the first case member 88. Is done.

  Between the support shaft 93 and the central axis C, the first case member 88 is provided with a guide hole 98 extending in parallel with the central axis C so as to open the side opposite to the wall 90. The two case members 89 are integrally provided with a lid portion 89a that is inserted into the guide hole 98 so as to close the open end of the guide hole 98 when coupled to the first case member 88.

  The operation knob 97 is integrally provided with a base end portion of a connecting shaft 99 that penetrates the guide hole 98. On both sides of the base end portion of the connecting shaft 99, fitting grooves 100, 100 for fitting the first case member 88 on both sides of the guide hole 98 are provided, and the first to the fitting grooves 100. By the fitting of the case member 88, the operation knob 97 is arranged in the key case 85 so as to be slidable along the central axis C.

  On the other hand, an elongated connecting hole 101 through which the connecting shaft 99 is inserted is provided at an intermediate portion of the lever 92. By sliding the operating lever 97, the lever 92 is moved to the position shown in FIG. It will rotate between the positions shown in FIG.

  The connecting shaft 99 is provided with a bottomed spring accommodating hole 102 opened on the second case member 89 side, and a coiled spring 103 whose one end abuts against the closed end of the spring accommodating hole 102 is accommodated in the spring. It is accommodated in the hole 102. On the other hand, on the surface of the second case member 89 facing the connecting shaft 99, engagement recesses 104 and 105 that are recessed in a triangular shape are provided at intervals in the sliding direction of the operation knob 97. In addition, a state in which the spring is accommodated in the spring accommodating hole 102 and a substantially half portion are selectively engaged with one of the engaging recesses 104 and 105, and the remaining substantially half portion is engaged with the spring accommodating hole 102. A click ball 106 that can be switched between states is brought into contact with the other end of the spring 102.

  Thus, one of the engaging recesses 104 and 105 engages substantially half of the click ball 106 when the operation knob 97 is located at a position where the mechanical key 31 is accommodated in the key case 85. The other engaging recess 105 is arranged at a position where the half of the click ball 106 is engaged when the operation knob 97 is located at a position where the mechanical key 31 protrudes from the key case 85. Therefore, the operation knob 97 slides moderately between a position where the mechanical key 31 is accommodated in the key case 85 and a position where the mechanical key 31 protrudes from the key case 85.

  One end portion of the key case 85 including the wall portion 90 is fitted on the outer surface of the rotation member main portion 57a of the rotation member 57 constituting a part of the shutter mechanism 54 so as not to be relatively rotatable and detachable. A fitting recess 107 that can be fitted together is formed. The fitting recesses 107 extend in parallel with each other along one diameter line of the insertion hole 56 and are integrally projected on the outer surface of the rotating member main portion 57a on both sides of the insertion hole 56 and have a small diameter fitting cylinder. A pair of protrusions 108 and 108, both ends of which are integrally connected to the inner surface of the portion 57d, and a part of the small-diameter fitting cylinder portion 57d, have a substantially rectangular shape corresponding to the cross-sectional shape of the key case 85. The projecting portion is formed so as to project at least a part of the fitting recess 107, in this embodiment, a part of the fitting recess 107 and projecting from the rotating member 57. Are formed in a shape that can be held so as to manually operate the rotating member 57 on the side where the shutter plate 58 is operated from the open position to the closed position in the unlocked state of the magnet lock 55.

  The magnets 84 are disposed on one end of the key case 85, that is, on the wall 90, and the magnets 84 are fitted to the wall 90 at positions corresponding to the arrangement of the magnets 81 in the magnet lock 55. Then, a film 109 made of a non-magnetic material for maintaining the fitted state of the magnets 84 to the wall 90 is adhered to the wall 90.

  The magnets 84 are arranged on the wall 90 so that the same magnetic poles as the magnetic poles on the key case 85 side of the magnets 81 of the magnet lock 55 are arranged on the magnet lock 55 side. When the key case 85 is fitted in the fitting recess 107 of the rotating member 57 so as not to be relatively rotatable when the shutter mechanism 54 is in the closed state, the magnet lock 55 is engaged with the engaging recesses 78. Due to the proximity of the magnets 84 to the magnets 81, the magnets 81 on the magnet lock 55 side slide against the springs of the springs 82 so as to be separated from the engaging recesses 78 by the repulsive force of the same magnetic pole. The magnet lock 54 is unlocked by being pushed into the holes 77, and the rotation operation of the rotation member 57 is allowed.

  By the way, engagement grooves 110 and 110 are provided on the outer periphery of both sides in the width direction near one end of the key case 85, and the body cover 17 fixed to the cylinder body 16 side in this embodiment, Four engaging portions 111 projecting from the inner periphery of the opening 19 so as to be able to engage with the engaging grooves 110 of the key case 85 in a state of being fitted in the fitting recess 107 are integrated. Is projected.

  The engaging portions 111, 111... Are projected from the inner periphery of the opening portion 19 at, for example, positions spaced at an equal interval of 90 degrees from each other, and the inner cylinder 28 is at the lock position P1. When the shutter plate 58 is in the closed position PS, as shown in FIG. 15, the engaging portions 111... Are not engaged with the engaging grooves 110. 107, but when the shutter plate 58 is at the open position PO, as shown in FIG. The two engage to prevent the key case 85 from being detached from the fitting recess 107.

  When the inner cylinder 28 is in the off position P2 and the shutter plate 58 is in the closed position PS, the engaging portions 111 are engaged with the engaging grooves 110 of the key case 85 as shown in FIG. However, the key case 85 can be detached from the fitting recess 107, and when the shutter plate 58 is in the open position PO, as shown in FIG. The engaging portions 111 are not engaged with the grooves 110, and the key case 85 can be detached from the fitting recess 107.

  Further, when the inner cylinder 28 is in the on position P4, as shown in FIG. 19, two of the engaging portions 111 are engaged with the engaging grooves 110 of the key case 85, and the key case 85 is fitted. Separation from the recess 107 is prevented.

  Next, the operation of this embodiment will be described. The key case 85 provided with the magnets 84 for unlocking the magnet lock 55 is fully accommodated in the state in which the entire mechanical key 31 is accommodated and inserted into the key hole 29. Since it is possible to switch the state in which a part of the mechanical key 31 protrudes by a certain length and the mechanical key 31 is held in and out, the degree of freedom in arrangement of the magnets 84 can be increased. The key 31 and the magnets 84... Can be combined together with the key case 85 into a compact unit as a key unit 86.

  Further, since the magnets 84 are disposed on the wall portion 90 constituting the end wall of the portion of the key case 85 from which the mechanical key 31 protrudes, the magnets 84 are disposed on the cylinder lock 55 side in order to unlock the magnet lock 55. In the state where the key case 85 is gripped toward the head, the operation of inserting the mechanical key 31 into the key hole 29 can be performed following the unlocking operation of the magnet lock 55 and the opening operation of the shutter mechanism 54. No need to change.

  In addition, the shutter mechanism 54 has a rotation member 57 that can rotate about the same axis as the inner cylinder 28 and interlocks with the shutter plate 58 according to the rotation. A magnetic lock is provided in a state in which the key case 85 is fitted to the rotating member 57 on the wall portion 90 of the key case 85 that can be fitted and can be rotated in the fitted state. Magnets 84... Are provided so as to be able to unlock 55, and the mechanical key 31 is moved from the key case 85 in a state where the rotation member 57 is rotated so that the shutter plate 58 is set to the open position by the key case 85. Can be protruded to be inserted into the key hole 29, and the mechanical key 31 is held so as to be able to appear and retract.

  Therefore, when the key case 85 is fitted to the rotating member 57 of the shutter mechanism 54 in the state in which the mechanical key 31 is stored, the magnet lock 55 is unlocked by the magnets 84. Thus, the rotation member 57 can be rotated to operate the shutter plate 58 to the open position. In this state, the mechanical key 31 is projected from the key case 85 and inserted into the key hole 29 of the inner cylinder 28. It becomes possible. That is, it is possible to open the shutter mechanism 54 and insert the mechanical key 31 into the key hole 29 with the key case 85 fitted to the rotating member 57 of the shutter mechanism 54. Therefore, the operability can be improved.

  Further, since the mechanical key 31 is slidably held in the key case 85, the switching operation between the housed state and the protruding state of the mechanical key 31 can be facilitated.

  The shutter mechanism 54 is unitized with a rotating member 57 that can rotate about the same axis as the inner cylinder 28 and that operates the shutter plate 58 between the open position and the closed position in accordance with the rotation. The inner cylinder 28 is inserted into the cylinder body 16 so as to be able to slide in the direction along the axis of the inner cylinder 28 so as to apply a pressing force from the front. Therefore, when the inner cylinder 28 is pushed, it is only necessary to push the key case 85 together with the mechanical key 31, and a pressing force can be applied from the front to the inner cylinder 28 via the shutter mechanism 54. The operability when the inner cylinder 28 is pushed can be improved.

  Further, the turning member 57 is formed with a fitting recess 107 that allows the key case 85 to be fitted in and out of the key case 85 so that the relative rotation is impossible. At least a part of the fitting recess 107 is formed. Then, the protrusions 108 projecting from the rotating member 57 hold the rotating member 57 so as to be manually operated on the side where the shutter plate 58 is operated from the open position to the closed position in the unlocked state of the magnet lock 55. Therefore, when the key case 85 is removed from the fitting recess 107 with the shutter plate 58 open at the off position P2, the shutter is held by holding the protrusions 108 and rotating them. The plate 58 can be moved from the open position to the closed position, and the operation of re-fitting the key case 85 into the fitting recess 107 is not necessary.

  In the key unit 86, one end of the key case 85 is pivotally supported and the other end of the lever 92 accommodated in the key case 85 is slidably held by the key case 85. 31 is coupled, and an operation knob 97 disposed in the key case 85 is coupled to the intermediate portion of the lever 92 so that the slide operation by a manual movement in a direction parallel to the sliding direction of the mechanical key 31 is possible. 97 slide operation amount can be made small, and operativity can be improved.

  The mechanical key 31 is held by the key case 85 so as to be slidable along the central axis C of the key case 85 formed long in the direction along the longitudinal direction of the mechanical key 31, and one end portion of the lever 92. Since the operation knob 97 is disposed between the pivot support portion of the key case 85 and the central axis C, the mechanical key 31 can be slid according to the rotation of the lever 92 while the mechanical key 31 is moved to the key case 85. Can be arranged on the central axis C.

  Further, since the lever 92 is connected to the mechanical key 31 on the side opposite to the pivotal support with respect to the central axis C, the distance between the connecting portion of the operation knob 97 to the lever 92 and the connecting portion of the lever 92 to the mechanical key 31. Can be set relatively large, and the slide amount of the mechanical key 31 can be set larger than the slide amount of the operation knob 97.

  Further, the cylinder cover 16 side of the cylinder lock 15, that is, the body cover 17 fixed to the cylinder body 16 in this embodiment, is mechanically released from the key case 85 after releasing at least the magnet lock 55 and opening the shutter plate 58. There are provided engaging portions 111... That engage the key case 85 during the protruding operation of the key 31 and prevent the key case 85 from being detached from the rotating member 57. Therefore, the operability can be further improved by stabilizing the posture of the key case 85 when the mechanical key 31 is inserted into the key hole 29.

  When the inner cylinder 28 is in the lock position P1 and the shutter plate 58 is in the open position, the two engaging portions 111... Engage with the key case 85, so that the key case 85 is connected to the cylinder lock 15. When the vehicle driver leaves the vehicle after obtaining the steering lock state, the key case 85 is rotated so as to operate the shutter plate 58 to the closed position side, and the key case 85 is detached from the cylinder lock 15. Therefore, the shutter plate 85 is always operated to the closed position, and the anti-theft property can be improved.

  Further, when the inner cylinder 28 is in the on position P4, the engaging portions 111... Engage with the key case 85, so that the inner cylinder 28 inserts the mechanical key 31 into the key hole 29 and moves the inner cylinder 28 to the on position P4. In the rotated state, the key case 85 is not detached from the cylinder lock 15, and the ON position P <b> 4 of the inner cylinder 28 can be reliably held.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

It is sectional drawing of a cylinder lock and a key unit, Comprising: It is sectional drawing which follows the 1-1 line | wire of FIG. FIG. 2 is a front view taken along arrow 2 in FIG. 1 when the key unit is omitted in a state where the shutter plate is in the closed position. It is sectional drawing which cut | disconnected the cylinder lock and the key unit along the 3-3 line of FIG. FIG. 4 is a cross-sectional view of the vicinity of the shutter mechanism in a closed state taken along line 4-4 of FIG. FIG. 4 is a cross-sectional view of the shutter mechanism and the vicinity of the magnet lock in a closed state as viewed from a direction substantially corresponding to FIG. 3. It is a disassembled perspective view of a shutter mechanism. FIG. 7 is a cross-sectional view showing the shutter mechanism in an open state at a locked position along line 7-7 in FIG. 3. FIG. 8 is a cross-sectional view corresponding to FIG. 7 for showing the shutter mechanism in a closed state at a locked position. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 4. It is a disassembled perspective view of a key unit. It is a longitudinal cross-sectional view of a key unit, and is sectional drawing which follows the 11-11 line of FIG. 12 and FIG. 12 is a sectional view taken along line 12-12 of FIG. FIG. 13 is a sectional view taken along line 13-13 in FIG. 11. It is sectional drawing corresponding to FIG. 11 in the state which made the mechanical key protrude from the key case. It is a front view of a cylinder lock in a state where an inner cylinder is in a lock position and a key unit is omitted in a state where a shutter plate is in a closed position. FIG. 16 is a view corresponding to FIG. 15 in a state where the inner cylinder is in the lock position and the shutter plate is in the open position. FIG. 16 is a view corresponding to FIG. 15 in a state where the inner cylinder is in the off position and the shutter plate is in the closed position. FIG. 16 is a view corresponding to FIG. 15 in a state where the inner cylinder is in the off position and the shutter plate is in the open position. FIG. 16 is a view corresponding to FIG. 15 in a state where the inner cylinder is in the ON position.

Explanation of symbols

15 ... Cylinder lock 16 ... Cylinder body 28 ... Inner cylinder 29 ... Key hole 31 ... Mechanical key 54 ... Shutter mechanism 55 ... Magnet lock 57 ... Turning member 58 ... Shutter plate 84 ... Magnet 85 ... Key case 107 ... Fitting recess 108 ... Projection

Claims (2)

  A cylinder body (16) in which an inner cylinder (28) having a key hole (29) is inserted so as to be capable of axial movement and rotation, and insertion of a mechanical key (31) into the key hole (29) are allowed. A shutter plate (58) disposed in front of the inner cylinder (28) that can be operated between an open position and a closed position that prevents insertion of the mechanical key (31) into the key hole (29). A shutter mechanism (54) disposed on the cylinder body (16) and locked so that the shutter mechanism (54) cannot be operated when the shutter plate (58) is in the closed position. The shutter is unlocked according to the proximity of the magnet (84) in the locked state and the shutter plate (58) is set to the open position. In the protection device for the cylinder lock including the magnet lock (55) that enables the mechanism (54) to be operated, the mechanism (54) can be rotated about the same axis as the inner cylinder (28) and according to the rotation. The shutter mechanism (54) unitized with a rotating member (57) for operating the shutter plate (58) between the open position and the closed position is connected to the inner cylinder (28) from the front. It is inserted into the cylinder body (16) so as to be able to slide in the direction along the axis of the inner cylinder (28) so as to apply a pressing force, and is detachably fitted to the rotating member (57). The key case (85) can be turned to the key case (85) which can be turned and fitted to the key case (85). The magnet (84) is provided so that the magnet lock (55) can be unlocked in the fitted state, and the rotating member (57) is set so that the shutter plate (58) is in the open position. The mechanical key (31) can be projected and retracted by allowing the mechanical key (31) to protrude from the key case (85) in a rotated state to be inserted into the key hole (29). A cylinder lock protection device.   A fitting recess (107) that allows the key case (85) to be fitted in and removed from the rotating member (57) so that relative rotation is impossible is formed on the rotating member (57). The projecting portion (108) that forms at least a part of the rotating member (57) and closes the shutter plate (58) from the open position in the unlocked state of the magnetic lock (55). 2. The protection device for a cylinder lock according to claim 1, wherein the rotation member is formed in a shape that can be gripped so as to be manually operated on a side that is actuated to a position.

Images