WO2015037297A1 - Protective device for cylinder lock - Google Patents

Abstract

A protective device for a cylinder lock is configured so that a shutter plate, which is supported by a casing so as to be capable of opening and closing a mechanical key insertion hole, is movable to an open position when a magnetic key unlocks a magnetic lock. A restraint member (50) is provided to the casing, the restraint member (50) enabling the shutter plate (26), which is pressed toward the open position, to move between a restraint position where the shutter plate (26) is restrained at a closed position, and a restraint release position. A slide member (64) which is received in the casing in a slidable manner not only enables the operation of insertion of the magnetic key into an unlocking position but also can move from the unlocking position to a pushed-in position. A restraint release means (67) is provided between the slide member (64) and the restraint member (50), the restraint release means (67) moving the restraint member (50) to the restraint release position in response to the slide member (64) being pushed into the pushed-in position while the magnetic lock (25) is unlocked. As a result of this configuration, the shutter plate can be moved from the closed position to the open position by the operation of the magnetic key in one direction.

Description

Cylinder lock protector

The present invention can move between a casing having a mechanical key insertion hole for inserting a mechanical key into a cylinder lock, a closed position for closing the mechanical key insertion hole, and an open position for opening the mechanical key insertion hole. A shutter plate supported on the casing, and a magnetic lock disposed on the casing having a movable member operable in accordance with unlocking by a magnetic key, and the shutter at the time of unlocking the magnetic lock The present invention relates to a protection device for a cylinder lock that enables a plate to move to the open position.

Such a cylinder lock protection device is known from Patent Document 1, for example.

Japanese Patent No. 3914043

However, in the one disclosed in Patent Document 1, the shutter key is moved from the closed position to the open position by rotating the magnet key while the magnet key is fitted to the magnet lock and unlocked. When opening the shutter plate, the operation of fitting the magnet key to the magnet lock and the subsequent rotation operation are necessary and complicated, and a smoother operation is required. .

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a protection device for a cylinder lock which can move a shutter plate from a closed position to an open position by one-way operation of a magnet key. .

To achieve the above object, the present invention provides a casing having a mechanical key insertion hole for inserting a mechanical key into a cylinder lock, a closed position for closing the mechanical key insertion hole, and an opening for opening the mechanical key insertion hole. A shutter plate that is supported by the casing so as to be able to move between positions, and a magnetic lock that is disposed in the casing and has a movable member that can be operated when unlocked by a magnetic key, In the cylinder lock protection device that enables the shutter plate to move to the open position when the magnetic lock is unlocked, an urging member that urges the shutter plate toward the open position, and A restriction position for restricting to a closed position and movement of the shutter plate from the closed position to the open position; A restriction member disposed in the casing to enable movement between the restriction release positions to be accommodated, and to be slidable on the casing so as to move together with the magnet key according to insertion of the magnet key into the casing. In addition to being housed and allowing the magnetic key to be inserted to the unlocking position for unlocking the magnetic lock, it is possible to move from the unlocking position to the pushing position by further pushing the magnetic key. The restriction member is moved to the restriction release position when the magnet key is pushed together with the slide member to the pushing position in a state in which the movable member can be operated by unlocking the magnetic lock. A rule provided between the slide member and the restricting member so as to be moved. Further comprising a releasing means for the first feature.

According to the present invention, in addition to the configuration of the first feature, the restriction release means is engaged with the movable member so that the movement is restricted by the movable member in the locked state of the magnet lock. A movable engagement member held by the slide member and a resilient force that presses the movable engagement member to the side that drives the movable member in accordance with the movement of the slide member toward the push-in position are exhibited. And a spring member provided between the slide member and the movable engagement member, and the movable engagement member moves the movable engagement member toward the side that drives the movable member, thereby restricting the restriction member. The second feature is that the engaging member is engaged with the restricting member so as to be moved from a position to the restricting release position.

According to the first feature of the present invention, when the magnet key is inserted into the casing, and the magnet key is further pushed to the pushing position after the magnet lock is unlocked by moving the slide member together with the magnet key to the unlocking position. The restriction release means moves the restriction member that restricts the movement of the shutter plate urged toward the open position by the urging member to the open position, so that the shutter plate moves to the open position. Therefore, when the shutter plate is moved from the closed position to the open position, the magnet key has only to be pressed in one direction, so that the shutter plate can be moved to the open position with a smooth operation.

According to the second feature of the present invention, the pressing force acting on the movable member of the magnet lock as the slide member moves together with the magnet key causes the spring member and the movable engagement member to move from the slide member. Therefore, even if the slide member is pressed by an unauthorized member other than a regular magnet key, the pressing force from the slide member is absorbed by the spring member, and the magnet lock is in the locked state. In the non-operating movable member, only the spring load of the spring member is applied, and an excessive load is not applied to the magnet lock.

FIG. 1 is a perspective view of a cylinder lock protection device. (First embodiment) FIG. 2 is a perspective view of a mechanical key and a magnet key. (First embodiment) FIG. 3 is an exploded perspective view of the protective device. (First embodiment) FIG. 4 is a front view of the protection device with the cover member omitted. (First embodiment) FIG. 5 is a perspective view of the cover member as seen from the back side. (First embodiment) 6 is a view of the body as seen from the direction of arrow 6 in FIG. (First embodiment) FIG. 7 is a perspective view of the slide member. (First embodiment) FIG. 8 is a perspective view showing a state of the restriction release means when the magnetic lock is in the locked state. (First embodiment) FIG. 9 is a perspective view showing a state of the restriction release means when the magnetic lock is unlocked and the magnetic key is pushed from the unlocked position to the pushed position. (First embodiment)

11 ... Cylinder lock 13 ... Protection device 14 ... Mechanical key 16 ... Magnet key 24 ... Casing 25 ... Magnet lock 26 ... Shutter plate 27 ... Mechanical key insertion hole 48 ... first coil spring 50 as an urging member ... regulator member 53 ... rotor 64 as a movable member ... slide member 67 ... regulation release means 68 ... movable engagement member 69 ... Fifth coil spring that is a spring member

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9.

First embodiment

First, in FIG. 1, the switching device of the ignition switch and the steering lock state and the unlock state can be switched, and a protective device 13 is attached to a cylinder body 12 of a cylinder lock 11 used in a vehicle such as a motorcycle.

In FIG. 2, the mechanical key 14 for unlocking the cylinder lock 11 is housed in a carrying case 15 that has a rectangular cross section and extends linearly, and as shown in FIG. It is supported at one end of the carrying case 15 so as to be able to switch the state of protruding from the case, and a magnet key 16 is provided at the other end of the carrying case 15.

On the side surface of the other end portion of the carrying case 15, a square recess 17, a circular protrusion 18 disposed at the center of the recess 17, and a periphery of the circular protrusion 18 in the recess 17. Four receiving recesses 19 are formed, and the circular protrusions 18 are fitted in the state in which the magnets 20 are respectively received in the three receiving recesses 19 selected from the four receiving recesses 19. The magnet key 16 is configured by fitting and adhering a lid member 22 having a circular hole 21 at the center to the recess 17. Moreover, the magnet 20 is accommodated in the accommodating recess 19 so that either one of the N pole or the S pole faces the outer end side of the accommodating recess 19.

3 and 4 together, the protection device 13 is housed in the casing 24, a casing 24 that covers one end of the cylinder body 12, a magnetic lock 25 disposed in the casing 24, and the casing 24. The shutter plate 26 is provided.

The casing 24 having a mechanical key insertion hole 27 for inserting the mechanical key 14 into the cylinder lock 11 includes a body 28 to which the cylinder body 12 is coupled, and the body 28 opposite to the cylinder body 12. And a cover member 29 fastened to the body 28 so as to cover the body. The casing 24 has a closing position (the position shown in FIG. 4) for closing the mechanical key insertion hole 27 and an opening position for opening the mechanical key insertion hole 27 in the shutter plate moving direction 30 indicated by an arrow in FIG. A shutter plate 26 that can move is supported, and this shutter plate 26 is disposed between the body 28 and the cover member 29.

Referring also to FIG. 5, the cover member 29 covers the body 28 so as to fit a part of the body 28 opposite to the cylinder lock 11, and moves the shutter plate. It is formed in a substantially rectangular bowl shape that is long in a direction orthogonal to the direction 30.

First and second boss portions 29a and 29b that are opposed to each other in the shutter plate moving direction 30 are integrally formed at the peripheral portion of the cover member 29 at the middle portion in the longitudinal direction of the cover member 29, and A third boss 29c is formed integrally with one of the four corners of the cover member 29. On the other hand, first to third support portions 28a, 28b, 28c with which the first to third boss portions 29a, 29b, 29c abut are integrally formed on the outer periphery of the body 28. A screw member 31 (see FIG. 3) inserted from the cylinder lock 11 side into the third support portions 28a to 28c is screwed into the first to third boss portions 29a to 29c, whereby the cover is attached to the body 28. The member 29 is fastened.

A slidable contact support surface 32 for slidably contacting the shutter plate 26 is formed in a portion surrounded by the first to third support portions 28a to 28c of the opposing surface of the body 28 to the back surface of the cover member 29. The The mechanical key insertion hole 27 corresponds to the circular inner hole 33 provided in the body 28 by opening in the sliding contact support surface 32 so as to communicate with the cylinder lock 11, and the inner hole 33. The shutter plate 26 is interposed between the internal hole 33 and the external hole 34 to close the mechanical key insertion hole 27. The circular external hole 34 is provided in the cover member 29.

The shutter plate 26 is integrally connected to the lid portion 26a so as to extend along the flat plate-like lid portion 26a slidably contacting the sliding contact support surface 32 and the shutter plate moving direction 30. A spring extending integrally with the lid portion 26a and extending in the shutter plate moving direction 30 so as to be positioned on a virtual plane PL passing through the central axis of the portion 26b and the first and second support portions 28a, 28b. And a receiving portion 26c.

A notch 35 formed in a semicircular shape corresponding to a substantially half circumference of the inner hole 33 and the outer hole 34 is formed at one end portion of the lid part 26a along the moving direction 30 of the shutter plate. By forming the notch 35, the amount of movement of the shutter plate 26 from the closed position to the open position is shortened, and the lid 26a is formed by a first guide protrusion 43a and a pressing protrusion 46 described later. Guide lengths on both sides can be secured.

The operation portion 26b is integrally connected to the lid portion 26a at an end opposite to the portion where the notch portion 35 is formed, and a flat plate portion 26ba flush with the lid portion 26a, The flat plate portion 26ba is formed so as to have a short cylindrical portion 26bb integrally formed at the center of the tip portion.

A protrusion having a semicircular cross section that swells toward the body 28 so as to form an operation recess 36 on the outer surface side of the cover member 29 at a peripheral portion of the cover member 29 at a position corresponding to the operation portion 26b. A portion 29d is provided integrally, and has a shape corresponding to the cross-sectional shape of the operation portion 26b so that the front end portion of the operation portion 26b faces the shutter plate 26 in the closed position. A through-hole 37 formed in this manner is provided in the cover member 29 corresponding to the operation recess 36, and when the shutter plate 26 is moved to the open position, the tip of the operation portion 26b is the operation recess. 36 protrudes.

The spring receiving portion 26c is integrally connected to a side portion on the virtual plane PL side of the lid portion 26a, and one end of the spring receiving portion 26c is arranged on the lid portion 26a along the shutter plate moving direction 30. The other end of the spring receiving portion 26 c is arranged corresponding to the intermediate position of the operation portion 26 b along the shutter plate moving direction 30.

By the way, the body 28 has a bottomed slide support hole 38 that is opened at a portion opposite to the sliding contact support surface 32 with respect to the virtual plane PL so as to face the back surface of the cover member 29. The cover member 29 is provided with a substantially rectangular insertion hole 39 corresponding to the slide support hole 38. The cover member 29 is provided with a substantially rectangular cross-sectional shape whose longitudinal direction is the direction along the plate moving direction 30. It is done.

Referring to FIG. 3, a cover member 40 for closing the insertion hole 39 is rotatably supported on the back surface of the cover member 29 via a support shaft 41. The cover member 40 is closed by a spring 42. Is biased to the side.

On the back surface of the cover member 29, ribs 43 that contact the outer peripheral portion of the opposing surface of the body 28 to the back surface of the cover member 29, except for the portion corresponding to the protrusion 29 d, It is integrally projected while being arranged so as to surround the insertion hole 39.

A first guide protrusion 43a extending along the shutter plate moving direction 30 while forming a part of the rib 43 on the side surface of the shutter plate 26 opposite to the spring receiving portion 26c of the lid portion 26a. And a second guide protrusion protruding from the back surface of the cover member 29 so as to extend long along the shutter plate moving direction 30 on the outer surface of the spring receiving portion 26c of the shutter plate 26. The part 44 is slidably contacted. Further, in the shutter plate 26, a groove 45 opened facing the back surface of the cover member 29 extends along the shutter plate moving direction 30 at the side end portion of the lid portion 26 a on the spring receiving portion 26 c side. On the back surface of the cover member 29, a pressing protrusion 46 that fits into the groove 45 is integrally protruded so as to extend long along the shutter plate moving direction 30. That is, the movement of the shutter plate 26 along the shutter plate moving direction 30 is guided by the first guide protrusion 43a, the second guide protrusion 44, and the presser protrusion 46.

In addition, the portion of the cover member 29 facing the back surface of the body 28 on the outer surface of the slide support hole 38 on the opposite surface of the body 28 has an inner side of the rib 43 on the back surface of the cover member 29. A support protrusion 28d that comes into contact with the back surface is integrally protruded.

A spring receiving seat 47 facing one end of the spring receiving portion 26 c of the shutter plate 26 is provided on the cover member 29 so as to be disposed between the second guide protrusion 44 and the pressing protrusion 46. A first coil spring 48 that is a biasing member that biases the shutter plate 26 toward the opening position is contracted between the spring receiving seat 47 and one end of the spring receiving portion 26c.

In a state where the shutter plate 26 is in the closed position, the movement of the shutter plate 26 toward the open position is restricted by the restriction member 50 coming into contact with the other end of the spring receiving portion 26c of the shutter plate 26. Is done. The restricting member 50 is in contact with the other end of the spring receiving portion 26c of the shutter plate 26 in the closed position to restrict the shutter plate 26 to the closed position, and the other end of the spring receiving portion 26c. It is disposed on the body 28 in the casing 24 so as to be able to move between the restriction release position that allows the shutter plate 26 to move from the closed position to the open position by releasing the contact with the casing 24. The

The restricting member 50 includes a contact portion 50a that can contact the other end of the spring receiving portion 26c, and one end portion that is connected to the contact portion 50a so as to extend in parallel with the direction in which the slide support hole 38 extends. A rod-like portion 50b to be taken out and a latching portion 50c provided at right angles to the other end of the rod-like portion 50b are integrally formed. The body 28 is provided with the latching portion 50c on the slide. A bottomed restricting member fitting hole 51 for movably fitting the restricting member 50 so as to protrude toward the support hole 38 opens in the sliding contact support surface 32 and the shutter of the slide support hole 38. It is provided so as to open on the side surface on the plate 26 side, and a space between the closed end of the restriction member fitting hole 51 and the rod-like portion 50b of the restriction member 50 is accommodated in the restriction member fitting hole 51. 2 coil springs 52 It mounted under compression so as to exhibit a spring force for biasing the limiting member 50 in the restricting position side.

The sliding operation of the shutter plate 26 from the closed position to the open position is enabled by unlocking the magnetic lock 25 disposed on the body 28 of the casing 24 with the magnetic key 16. The magnet lock 25 includes a rotor 53 as a movable member that is rotatably supported by the body 28 of the casing 24.

The rotor 53 includes a circular dish-shaped part 53a, a collar part 53b projecting radially outward from the opening end of the dish-shaped part 53a, and a connecting arm extending outward from one circumferential direction of the collar part 53b. A part 53c and an engaging protrusion 53d that protrudes from the outer end of the connecting arm part 53c to the same side as the dish-like part 53a are integrally formed and made of a nonmagnetic material.

In FIG. 6, the body 28 of the casing 24 has a fitting recess 54 in which the flange 53b of the rotor 53 and the connecting arm portion 53c are rotatably fitted, and the fitting recess 54 has an outer end. A circular fitting hole 55 that is open and has an inner end opened on the side surface of the slide support hole 38 opposite to the shutter plate 26 to rotatably fit the dish-like portion 53a of the rotor 53; The length is such that the outer end is opened in the fitting recess 54 so that the engaging protrusion 53d is inserted, and the inner end is opened on the side surface of the slide support hole 38 opposite to the shutter plate 26. The long hole 56 is centered on the rotation axis of the rotor 53 so as to allow the rotation of the rotor 53 in the fitting recess 54 and the fitting hole 55. Formed in an arc shape .

The fitting recess 54 integrally has a support protrusion 57 a that fits into the dish-like portion 53 a of the rotor 53 and supports the rotation of the rotor 53, and is attached to the body 28 by three screw members 58. The O-ring 59 is interposed between the base of the support protrusion 57 a and the rotor 53.

A plurality of, for example, three pins 60 made of magnets are provided at the tip of the support protrusion 57a, and three of the four locking recesses 62 provided on the inner surface of the closed end of the dish-like portion 53a of the rotor 53. The pin 60 is slidably fitted so as to be able to move between a position where it is engaged and a position where the engagement is released, and each pin 60 is individually attached to the rotor 53 by a third coil spring 61 corresponding thereto. The bullet is biased toward the engaging side.

The three pins 60 are disposed at positions corresponding to the three magnets 20 included in the magnet key 16 when the magnet key 16 is disposed opposite to the outer surface of the closed end of the dish-like portion 53a of the rotor 53. In this manner, the engaging recess 62 is fitted. In addition, the pin 60 is arranged such that the same pole as the pole of the magnet 20 on the magnet lock 25 side of the magnet key 16 is arranged on the inner end side of the locking recess 62. The regular magnet key 16 is disposed at a position facing the outer surface of the closed end of the dish-like portion 53a to engage the pin 60 with the rotor 53 against the elastic biasing force of the third coil spring 61. Can be moved to the release side, and thus the rotation of the rotor 53 is allowed.

Referring also to FIG. 7, the slide support hole 38 of the body 28 in the casing 24 has a slide member 64 that moves together with the magnet key 16 in accordance with the insertion of the magnet key 16 into the casing 24. It is slidably accommodated.

The slide member 64 is slidably in contact with the first side wall portion 64a slidably in contact with the side surface of the slide support hole 38 on the shutter plate 26 side, and the side surface of the slide support hole 38 opposite to the shutter plate 26. A first side wall portion 64b facing the first side wall portion 64a, and a first connecting wall portion for connecting the first and second side wall portions 64a, 64b on one end side in the longitudinal direction in the cross-sectional shape of the slide support hole 38. 64c and a second connecting wall portion 64d corresponding to the first connecting wall portion 64c by connecting the first and second side wall portions 64a and 64b at the other end in the longitudinal direction in the cross-sectional shape of the slide support hole 38; The first and second side walls 64a, 64b, the first connecting wall 64c and the end wall 64e connecting the second connecting wall 64d are integrally formed on the inner end side of the slide support hole 38. The slide member 64 has a bottomed magnet key insertion hole 65 for opening the lid member 40 and inserting the magnet key 16 inserted together with the mobile case 15 from the insertion hole 39 of the cover member 29. Is formed to have a substantially rectangular cross-sectional shape.

The distal end portion of the portable case 15 that is inserted into the magnet key insertion hole 65 together with the magnet key 16 is in contact with the end wall portion 64 e, and the magnet key 16 is pushed together with the portable case 15. Thus, the slide member 64 slides in the slide support hole 38. In addition, a fourth coil spring 66 is provided between the first and second connecting wall portions 64c and 64d of the slide member 64 and the closed end of the slide support hole 38, respectively. The spring 64 is biased toward the side close to the cover member 29.

A window 67 through which the magnet key 16 inserted into the magnet key insertion hole 65 faces the magnet lock 25 side is formed along the extending direction of the slide support hole 38 on the second side wall 64b of the slide member 64. The slide member 64 moves together with the magnet key 16 in accordance with the insertion of the magnet key 16 so that the magnet key 16 is placed on the outer surface of the closed end of the rotor 53 of the magnet lock 25. Opposing the magnet key 16 to the unlocking position for unlocking the magnet lock 25 enables the magnet key 16 to be inserted, and further, from the unlocking position to the pressing position by further pressing the magnet key 16. It is possible to move.

In FIG. 8, the magnet key 16 is pushed together with the slide member 64 between the slide member 64 and the regulating member 50 in a state where the magnet lock 25 is unlocked and the rotor 53 can be rotated. A restriction releasing means 67 is provided for moving the restricting member 50 to the restriction releasing position in response to pushing into the position.

The restriction release means 67 is engaged with the engagement protrusion 53d of the rotor 53 and held by the slide member 64 while the movement of the magnet 53 is locked in the locked state of the magnet lock 25. The movable engagement member 68 and the elastic force that presses the movable engagement member 68 to the side that rotationally drives the rotor 53 in accordance with the movement of the slide member 64 toward the push-in position. And a fifth coil spring 69 as a spring member provided between the slide member 64 and the movable engagement member 68.

The movable engagement member 68 has a locking groove 70 for engaging the engagement protrusion 53d, and is formed in a substantially C-shape that is open to the connecting arm portion 53c side of the rotor 53. The member main portion 68a and the engaging protrusion 68b protruding from the movable engaging member main portion 68a so as to engage with the locking portion 50c of the restricting member 50 from the contact portion 50a side are integrated. A circular receiving recess 72 for receiving the end portion of the fifth coil spring 69 on the movable engagement member 68 side is formed in the movable engagement member main portion 68a. On the other hand, the second connecting wall portion 64d of the slide member 64 is provided with a receiving hole 71 through which the engaging portion 50c of the restricting member 50 and the engaging protrusion 53d of the rotor 53 are inserted from both sides. The hole 38 is provided so as to close both ends in the extending direction of the slide support hole 38 while opening toward the side surface on the shutter plate 26 side of the hole 38 and the side surface on the opposite side to the shutter plate 26. The engaging member 68 is accommodated in the accommodation hole 71.

The accommodation hole 71 has a fifth coil spring 69 that exerts a spring force that urges the movable engagement member 68 in the same direction as the pushing operation direction of the slide member 64 in the slide support hole 38. The slide member 64 and the movable engagement member 68 are accommodated in the accommodation hole 71 while being contracted.

When the legitimate magnet key 16 is inserted into the slide member 64 and pushed in, the magnet lock 25 is unlocked at the unlocked position so that the rotation of the rotor 53 is allowed. When the magnet key 16 and the slide member 64 are further pushed in from the unlocked position, the pressing force due to the movement of the slide member 64 causes the connecting arm of the rotor 53 via the fifth coil spring 69 and the movable engagement member 68. As shown in FIG. 9, the movable engagement member 68 moves and the rotor 53 rotates to move the restriction member 50 engaged with the movable engagement member 68 to the restriction release position. The shutter plate 26 that is forcibly driven and released from the restriction by the restriction member 50 is moved to the open position by the urging force of the first coil spring 48. It made.

In the state where the shutter plate 26 is in the open position, the distal end portion of the operation portion 26b provided in the shutter plate 26 protrudes into the operation recess 36 of the cover member 29 in the casing 24. Therefore, when the operation portion 26b of the shutter plate 26 in the open position is pushed in with the magnet key 16 detached from the casing 24, the shutter plate 26 resists the spring force of the first coil spring 48. Thus, the restricting member 50 is returned to the restricting position by the spring force of the second coil spring 52, and the magnet lock 25 is rotated by the rotor 53 to the original position. Moves to a locked state.

Next, the operation of this embodiment will be described. The protection device 13 configured to open and close the mechanical key insertion hole 27 provided in the casing 24 with the shutter plate 26 in order to insert the mechanical key 14 into the cylinder lock 11. A first coil spring 48 that urges the shutter plate 26 toward the open position, a restriction position that restricts the shutter plate 26 to the closed position, and movement of the shutter plate 26 from the closed position to the open position. A restriction member 50 disposed in the casing 24 to enable movement between the permitted restriction release positions, and the casing to move together with the magnet key 16 in response to insertion of the magnet key 16 into the casing 24. 24 is slidably accommodated in the position 24 and is unlocked to unlock the magnetic lock 25. The slide member 64 that allows not only the insertion operation of the magnet key 16 but also the movement from the unlocked position to the pressed position by further pressing the magnet key 16 and the magnet lock 25 are unlocked. Thus, the restriction member 50 is moved to the restriction release position in response to the magnet key 16 being pushed together with the slide member 64 to the push-in position in a state where the rotor 53 of the magnet lock 25 is allowed to rotate. And the restriction release means 67 provided between the slide member 64 and the restriction member 50. Therefore, when moving the shutter plate 26 from the closed position to the open position, the magnet key 16 may be pressed in one direction. The shutter plate 26 can be moved to the open position with a smooth operation.

In addition, the restriction release means 67 is engaged with the rotor 53 and held by the slide member 64 while the movement of the magnet 53 is locked in the locked state of the magnet 53. And the slide member 64 and the slide member 64 so as to exert a resilient force to press the movable engagement member 68 to the side that rotationally drives the rotor 53 according to the movement of the slide member 64 toward the push-in position. A fifth coil spring 69 provided between the movable engagement members 68, and the movable engagement member 68 is moved by moving the movable engagement member 68 to the side that rotationally drives the rotor 53. Since the member 50 is engaged with the restriction member 50 so as to move from the restriction position to the restriction release position, the slide member 64 is moved together with the magnet key 16. As a result, the pressing force acting on the rotor 53 of the magnet lock 25 acts from the slide member 64 via the fifth coil spring 69 and the movable engagement member 68, and the regular magnet key 16. Even if the slide member 64 is pushed by an unauthorized member other than the above, the pressing force from the slide member 64 is absorbed by the fifth coil spring 69, so that the magnet lock 25 is in the inoperative state due to the locked state. Only the spring load of the fifth coil spring 69 acts on the rotor 53, and an excessive load is not applied to the magnet lock 25.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist of the present invention.

Claims (2)

A casing (24) having a mechanical key insertion hole (27) for inserting a mechanical key (14) into the cylinder lock (11), a closed position for closing the mechanical key insertion hole (27), and the mechanical key insertion hole ( 27) and a movable member (53) operable to be unlocked by a magnetic key (16), and a shutter plate (26) supported on the casing (24) to be movable between open positions for opening And a magnetic lock (25) disposed on the casing (24), and the shutter plate (26) can be moved to the open position when the magnetic lock (25) is unlocked. In the cylinder lock protection device, the urging member (48) for urging the shutter plate (26) toward the open position side, and the shutter plate (2 ) In the casing (24) to enable movement between a restriction position that restricts the closed position to the closed position and a restriction release position that allows movement of the shutter plate (26) from the closed position to the open position. The regulating member (50) and the casing (24) are slidably accommodated so as to move together with the magnet key (16) in accordance with the insertion of the magnet key (16) into the casing (24). In addition, the magnetic key (16) can be inserted into the unlocking position for unlocking the magnetic lock (25), and the magnetic key (16) is further pushed in from the unlocked position. The slide member (64) that can be moved up to and the magnet lock (25) are unlocked to produce the movable member (53). When the magnet key (16) is pushed together with the slide member (64) to the push-in position in a state in which the restriction member (50) is pushed, the restriction member (50) is moved to the restriction release position. 64) and a restriction releasing means (67) provided between the restricting member (50). The restriction release means (67) is engaged with the movable member (53) while the movement of the movable member (53) is restricted in the locked state of the magnetic lock (25), and the slide member ( 64) and the movable engagement member (68) on the side that drives the movable member (53) in accordance with the movement of the slide member (64) toward the push-in position. And a spring member (69) provided between the slide member (64) and the movable engagement member (68) so as to exert a resilient force to press the movable engagement member (68). The restriction member (50) is moved from the restriction position to the restriction release position by the movement of the movable engagement member (68) to the drive side of the movable member (53). To be engaged Cylinder lock protector according to claim 1, wherein the.

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