JP4660227B2 - Magnetic card type cylinder locking device with functions of impact unlocking prevention and destruction prevention - Google Patents

Description

  The present invention generally relates to a magnetic locking device, particularly a magnetic card type cylinder locking device that uses a key such as a card magnetic key that is suitable for use as a door lock in rental apartments, apartments, hotels, offices, parking lots, etc. About.

  This type of magnetic card type locking device may be used by duplicating the card key of hotels and rental apartments in particular, and the code setting of the magnetic locking device is changed after use by customers to prevent theft (For example, refer to Patent Document 1). However, this magnetic locking device is provided with a hole into which a setting change tool is inserted in order to change the code setting of the magnetic lock. A special instrument is inserted through this hole to destroy the magnetic lock, resulting in an accident such as theft. Has occurred. In order to prevent these accidents, the present applicant has developed a magnetic card type locking device including a breakage prevention mechanism that moves together with the shield plate and the sliding core to shield the insertion hole (see, for example, Patent Document 2).

  In addition, these magnetic card locks are generally designed to be incorporated inside walls and doors, and are rarely released even when an impact is applied to the key insertion slot or the surface of the wall or door. However, when these magnetic locks are housed in a box and attached to the surface of a wall or a pillar at the entrance of a parking lot, it is possible to apply an impact to the head of the lock. There was also an accident where the card key shape could be inserted and unlocked while being able to rock up and down. Various types of magnetic card locks having a mechanism for preventing an unlocking by a magnetic pin, which is a countermeasure against an unauthorized unlocking operation such as applying an impact, have been developed (for example, see Patent Documents 3 and 4).

  However, the magnetic card type locking device provided with the destruction prevention mechanism described in Patent Document 2 has a configuration in which the card key 27 is urged toward the shield plate 14 by the cam 30 and the cam spring 31 as shown in FIG. Since the holding position accuracy of the card key 27 is difficult and the card key 27 is directly urged, resistance is generated during insertion and removal, and at the same time, the shield plate 14 is easily rubbed and worn. Even after the card is inserted and the card key 27 is pulled out, it may cause mischief or the like to maintain the inserted state of the key.

As shown in FIG. 5, the prior art magnetic card lock is unlocked by interlocking with the drive pin 17b of the plastic sliding core 17 and the gear plate 21. There is a possibility that the moving core 17 is damaged and the gear plate 21 is compressed, and the interlocking state is achieved and the locking and unlocking can be performed. Further, when vibration is applied to the cylinder housing 10, the locking magnet pin 28 is retracted by vibration, and in some cases, the sliding core 17 is lowered even if it is not the regular card key 27, and the drive pin 17b and the gear plate 21 are driven. And may be locked and unlocked. Furthermore, if the normal card key 27 is inserted and the sliding core 17 is lowered and the card key 27 is pulled out, and the sliding core 17 remains lowered due to foreign matter or the like, there is a possibility that locking and unlocking can be performed. .
Japanese Examined Patent Publication No. 61-35349 Patent application 2004-18485 Japanese Utility Model Publication No. 1-92476 microfilm Patent application 2004-35059

  SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic card type locking device having a more safe and reliable shock unlocking and breaking prevention function by further improving the shock unlocking and breaking prevention functions in the conventional magnetic locking device. That is.

  The problem is that the cylinder housing and the housing cover plate are arranged in the order of the front plate, leaf spring, shield plate, nonmagnetic cover plate, locking plate, sliding core containing the locking magnet pin, clutch plate, gear plate, and back plate. In a locking device that is housed in the magnetic card key and can be inserted between a pair of shield plates and a non-magnetic cover plate, the ball plunger is arranged so as to contact both side surfaces of the shield plate and is attached to the front plate. When the magnetic card key is inserted, the locking magnet pin moves backward from the locking plate, and the shield plate moves down together with the sliding core. At this time, the ball plunger enters the bending notch of the shield plate. Provided is a magnetic card type locking device which is solved by holding a shield plate and has a function of preventing destruction.

  In the magnetic card type locking device having the destruction preventing function of the present invention, the shield plate can be moved together with the sliding core, and the sliding contact portion of the shield plate is slidably contacted with the slope cam portion of the front plate by the vertical movement thereof. The card key is biased by being lifted in the axial direction of the housing.

  A magnetic card type locking device having a breaking prevention function and an impact unlocking prevention magnetic function according to the present invention includes a release lever installed at a lower end of a sliding core via a spring, a clutch plate having an engagement hole, and a sliding An escape mechanism is provided which includes a pendulum body which is provided on the back portion of the core and engages the pendulum protrusion with the hole of the clutch plate by vibration of the pendulum.

  In the magnetic card type locking device having the shock unlocking prevention magnetic function according to the present invention, when the cylinder housing is vibrated, the pendulum body is detached from the clutch plate, and the clutch plate releases the mesh with the gear plate to perform the unlocking. It is characterized by making it impossible.

  In the magnetic card type locking device having the shock unlocking prevention magnetic function of the present invention, when the card key is pulled out while the sliding core is lowered, the release lever pulls the pendulum body into the sliding core, and the clutch plate is raised. It is returned to the direction, and the engagement with the gear plate is released to make locking and unlocking impossible.

  The magnetic card type locking device of the present invention includes various members installed in the cylinder housing, that is, a front plate, a leaf spring, a shield rate, a nonmagnetic cover plate, a locking plate, a sliding core that houses a locking magnet pin, The clutch plate, the gear plate, and the back plate are housed in the order of a cylinder housing and a housing cover plate as a unit.

  According to the magnetic card type locking device of the present invention, the ball plunger is disposed on the front plate so as to be in contact with both side surfaces of the shield plate, and the lock magnet pin is retracted from the lock plate by inserting the magnetic card key. When the shield plate is lowered together with the sliding core, the ball plunger enters the bend notch of the shield plate and holds the shield plate, so that the shield plate and the sliding core are not lowered for the first time. Since the hole provided in the housing for inserting the lock setting change tool matches the hole of the shield plate, the code setting can be changed using the setting change tool. Until it is lowered, the hole in the shield plate is not aligned with the hole in the housing, so the hole in the housing is blocked by the shield plate. Can also be prevented. Further, since the shield plate is directly held by the ball plunger, the positional accuracy is easily obtained. Since the card key does not have a holding force, it has an advantage that it can be easily inserted and removed and has little wear.

  According to the magnetic card type locking device of the present invention, the shield plate can be moved together with the sliding core, and the sliding contact portion of the shield plate is slidably contacted with the slope cam portion of the front plate by the vertical movement thereof, so that the axial direction of the cylinder housing By energizing the card key by lifting the card key, the gap between the shield plate and the cover plate is made zero, and the distance from the lock magnet pin of the card key is shortened to facilitate the reaction.

  According to the magnetic card type locking device of the present invention, the release mechanism includes a release lever, a clutch plate having an engagement hole, and a pendulum body provided on the back of the sliding core and engaged with the clutch plate, Since the clutch plate (iron plate) is provided, the gear plate is not subjected to pressure even if it is broken from the outside, even if the gear plate is covered with the clutch plate and the sliding core is broken.

  According to the magnetic card type locking device of the present invention, even if a slight vibration is applied to the cylinder housing, the pendulum body moves off the clutch plate due to the pendulum motion, and the clutch plate releases the mesh with the gear plate to lock and unlock. It becomes impossible. As a countermeasure against vibration, it is not necessary to use expensive special magnet pins.

  According to the magnetic card type locking device of the present invention, even if the sliding core is lowered for some reason, when the card key is pulled out, the release lever pulls the pendulum body into the sliding core, and the clutch plate Returned to the upward direction, the meshing with the gear plate is released and locking / unlocking cannot be performed.

  According to the magnetic card type locking device of the present invention, various members installed in the cylinder housing, that is, a sliding core that houses a front plate, a leaf spring, a shield plate, a nonmagnetic cover plate, a locking plate, and a locking magnet pin. Since the clutch plate, gear plate, and back plate are housed in the cylinder housing and the housing cover plate in this order as a unit, they can be easily assembled from one direction in the cylinder housing, improving productivity. .

  The magnetic card type locking device of the present invention will be described in detail based on the embodiments described in the drawings. FIG. 1 is an exploded perspective view of a magnetic card type locking device of the present invention, and FIG. 2 is a plan sectional view (left) and a side sectional view of an operating state of a moving shield plate of the magnetic card type locking device of the present invention. 2a shows a state before the card key is inserted, FIG. 2b shows a state in the middle of inserting the card key, and FIG. 2c shows a state where the card key is inserted and reaches the receiving portion of the sliding core. 2d shows a state in which the card key is inserted and the sliding core is lowered, and FIG. 3 is a plan sectional view (left) and a side sectional view of the operating state of the escape mechanism of the magnetic card type locking device of the present invention. 3A shows a state before the card key is inserted, FIG. 3B shows a state where the card key is inserted and reaches the receiving portion of the sliding core, and FIG. 3C shows a state where the card key is inserted. FIG. 3d shows the card key when the sliding core is lowered. Are shown slightly pulled state, FIG. 4 shows the operating state of the shield rate of the conventional magnetic card type lock device, Figure 5 shows a 施開 lock operating state of the conventional magnetic card type lock device.

  FIG. 1 is an exploded perspective view of a magnetic card type locking device according to the present invention. Inside a cylinder housing 10 and a housing cover plate 24 of the locking device, a front plate 11, a leaf spring 12, a shield plate 14, These members are housed as a unit in the order of the magnetic cover plate 15, the locking plate 16, the sliding core 17 that houses the locking magnet pin 28, the clutch plate 20, the gear plate 21, and the back plate 22. Therefore, in this locking device, these members can be easily assembled from one direction in the cylinder housing 10, and the housing cover plate 24 is stopped by the bolt 25 to form one unit, so that the productivity of the assembly can be improved. .

  2 is a plan sectional view (left) and a side sectional view (right) of the moving shield plate 14 of the magnetic card type locking device according to the present invention, and FIG. 2a shows the state before the card key 27 is inserted. . FIG. 2 b shows a state in which the card key 27 is being inserted. When the magnetic card key 27 is inserted between the pair of shield plates 14 and the nonmagnetic cover plate 15, the moving shield plate 14 is opened. In this state, the lock magnet pin 28 still protrudes from the plastic sliding core 17 and enters the hole of the lock plate 16.

  FIG. 2 c shows a state in which the card key 27 is inserted and reaches the receiving portion of the plastic sliding core 17. The magnetism of the card key 27 and the magnetism of the locking magnet pin 28 are collated, and the locking magnet pin 28 is locked. It is in a state where it is retracted from the plate 16 and retracted into the hole 17d of the sliding core.

  FIG. 2 d shows a state in which the card key 27 is inserted and the sliding core 17 is lowered. In the above process, the moving shield plate 14 that has entered the plastic sliding core 17 follows the card key 27 and the sliding core 17. The bending sliding contact portion 14b of the shield plate 14 moves in contact with the slope cam portion 11a provided on the front plate 11, and moves in the axial direction of the cylinder housing 10 (as shown in FIG. 2cx to FIG. 2dx). And the card key 27 is moved closer to the cover plate 15.

  At that time, the ball plunger 13 enters the bending notch portions 14a (see FIGS. 2cy and 2dy) provided on both side surfaces of the moving shield plate 14, and holds the moving shield plate 14. 2cx and 2dx are enlarged views of the slope cam portion 11a and the bending sliding contact portion 14b. 2cy and 2dy are enlarged views of the plane (left) and side surface (right) of the moving shield plate 14 and the ball plunger 13. FIG.

  When the card key 27 is pulled out, the lower end of the moving shield plate 14 is moved toward the cover plate 15 as in FIG. 2b, so that the moving shield plate 14 is detached from the ball plunger 13 and the state before insertion in FIG. 2a. Return to.

  The moving shield plate 14 of the present invention is set by shifting the position of the through-hole 14d of the setting tool and inserting the proper card key 27 so that the sliding core 17 is lowered and followed, and is set only when it is fully lowered. The tool hole coincides with the hole 11d of the coaxial front plate 11, the hole 14d of the moving shield plate 14, the hole 14d of the cover plate 15, and the hole of the locking plate 16.

  When the moving shield plate 14 is lowered, it is lifted in the axial direction of the cylinder housing 10 as shown in FIG. 2cx to FIG. 2dx, and the gap between the cover plate 15 and the magnet plate 28 of the card key 27 is made zero. By reducing the distance between the two, it becomes easier to react.

  Further, since the shield plate 14 is directly held by the ball plunger 13, the positional accuracy is easily obtained. Since the card key 27 does not have a holding force, it can be easily inserted and removed and wear is also small.

  FIG. 3 is a plan sectional view (left) and a side sectional view (right) of the operating state of the escape mechanism of the magnetic card type locking device of the present invention. FIG. 3a shows a state before the card key 27 is inserted. FIG. 3 b shows a state in which the card key 27 is inserted and reaches the receiving portion of the sliding core 17. When the card key 27 is inserted into the cylinder housing 10, the release lever 18 is pushed in the arrow direction x, and the protruding portion of the pendulum body 19 19 b enters the engagement hole 20 a of the clutch plate 20 and follows the plastic sliding core 17 so that the clutch plate 20 can be lowered.

  FIG. 3c shows that, by inserting the regular card key 27, the sliding core 17 is lowered, and at the same time, the clutch plate 20 caught by the pendulum body 19 is lowered, and the projection provided on the clutch plate 20 is engaged with the gear plate 21. It becomes a state. When the cylinder housing 10 is rotated in this state, the gear plate 21 can be interlocked and unlocked.

  FIG. 3d shows a state in which the card key 27 is slightly pulled. At this time, the release lever 18 is returned in the direction opposite to the arrow direction x of the coil spring 29, so that the pendulum body 19 is pulled clockwise and detached from the clutch plate 20. . Therefore, the clutch plate 20 is returned in the arrow direction y (in the direction of pulling out the card key 27) by the force of the coil spring 26, and the meshing with the gear plate 21 is released.

  Since the escape mechanism of the present invention includes the clutch plate 20 (iron plate), the plastic plate core 17 is damaged by covering the gear plate 21 by providing the clutch plate 20 (iron plate) even when subjected to external damage. However, the gear plate 21 is not subjected to pressure.

  The escape mechanism of the present invention also includes a pendulum body 19 that performs a pendulum movement even with slight vibration. When the cylinder housing 10 is vibrated, the pendulum body 19 is disengaged from the clutch plate 20, and the clutch plate 20 is in the state shown in FIG. Thus, the meshing with the gear plate 21 is released, and locking and unlocking cannot be performed.

  In the escape mechanism of the present invention, the release lever 18 is further provided. Therefore, even if the plastic sliding core 17 is lowered for some reason, the release lever 18 is reversed from FIG. 3b when the card key 27 is pulled out. The pendulum body 19 is retracted, and the clutch plate 20 is returned in the direction of the arrow y to release the meshing with the gear plate 21 so that locking and unlocking cannot be performed.

It is an exploded assembly perspective view of the magnetic card type locking device of this invention. FIG. 2 is a plan sectional view (left) and a side sectional view (right) of the operating state of the moving shield rate of the magnetic card type locking device of the present invention, showing a state before the card key is inserted. Indicates the card key insertion state. FIG. 2 cx and FIG. 2 cy show a partially enlarged view of FIG. 2 c, showing a state where the card key is inserted to reach the receiving portion of the sliding core. FIG. 2 dx and FIG. 2 dy show a partially enlarged view of FIG. FIG. 2 is a plan sectional view (left) and a side sectional view (right) of an operating state of an escape mechanism of a magnetic card type locking device of the present invention, showing a state before insertion of a card key. A state in which the card key is inserted and reaches the receiving portion of the sliding core is shown. The state where the card key is inserted and the sliding core is lowered is shown. Shows the card key slightly pulled. The operation state of the shield rate of the conventional magnetic card type locking device is shown. The locking / unlocking operation state of the conventional magnetic card type locking device is shown.

Explanation of symbols

10. . . . . Cylinder housing 10d. . . . Cylinder housing setting tool through hole 10A. . . . Cylinder assembly 11. . . . . Front plate 11d. . . . 11. Setting tool through hole on the front plate . . . . Leaf spring 13. . . . . Ball plunger 14. . . . . Shield plate 14a. . . . Bending cutout of shield plate 14b. . . . Bending protrusion of shield plate 14d. . . . Shield plate setting tool through hole 15. . . . . . Magnetic cover plate,
16. . . . . . Locking plate 17. . . . . . Sliding core 17a. . . . . Sliding member of sliding core 17b. . . . . Fixed member for sliding core 18. . . . . . Release lever 18
18a. . . . . 18. Coil spring for release lever 18 . . . . . Pendulum body 19b. . . . . Pendulum protrusion 20. . . . . . Clutch plate 20a. . . . . Clutch plate engagement hole 20b. . . . . Clutch plate protrusion 21. . . . . . Gear plate 21
22. . . . . . Installation back plate 23. . . . . . Winding spring 24. . . . . . Housing cover plate 25. . . . . . Bolt 26. . . . . . Coil spring 27. . . . . . Card key 28. . . . . . Locking magnet pin 29. . . . . . Coil spring 30. . . . . . Cam 31. . . . . . Cam spring

Claims (6)

  Front plate 11, leaf spring 12, shield plate 14, nonmagnetic cover plate 15, lock plate 16, sliding core 17 that houses lock magnet pin 28, clutch plate 20, gear plate 21, and back plate 22 in this order In a locking device housed in the housing 10 and the housing cover plate 24 and capable of inserting the magnetic card key 27 between the pair of shield plates 14 and the nonmagnetic cover plate 15, the ball plunger 13 is disposed on both sides of the shield plate 14. It is placed on the front plate 11 so as to be in contact with the surface. When the magnetic card key 27 is inserted, the locking magnet pin 28 is retracted from the locking plate 16 and the shield plate 14 is lowered together with the sliding core 17. At this time, the ball plunger 13 enters the bending notch 14a of the shield plate 14 and the shield plate 1 Magnetic card type cylinder lock device, characterized in that to hold the.   The shield plate 14 can move together with the sliding core 17, and the sliding contact portion 14 b of the shield plate 14 is slidably contacted with the slope cam portion 11 a of the surface plate 11 by the vertical movement thereof, and is lifted in the axial direction of the cylinder housing 10. The magnetic card type cylinder locking device according to claim 1, wherein the card key (27) is urged. A release lever 18 installed at the lower end of the sliding core 17 via a spring, a clutch plate 20 having an engagement hole 20a, and a clutch plate 20 provided on the back of the sliding core 17 by swinging of the pendulum body 19. magnetic card type cylinder lock device according to claim 1 or claim 2, characterized in that it comprises an escape mechanism consisting of the pendulum body 19 for engaging the pendulum protrusion 19b to the engaging hole 20a of the.   When the vibration is applied to the cylinder housing (10), the pendulum body (19) is disengaged from the clutch plate (20), and the clutch plate (20) is disengaged from the gear plate (21) so that locking and unlocking cannot be performed. Item 4. The magnetic card type cylinder locking device according to any one of items 3 to 4.   When the card key 27 is pulled out while the sliding core 17 is lowered, the release lever 18 pulls the pendulum body 19 into the sliding core 17, the clutch plate 20 is returned in the upward direction, and meshes with the gear plate 21. The magnetic card type cylinder locking device according to any one of claims 1 to 3, wherein the magnetic card type cylinder locking device is unlocked and cannot be unlocked. The magnetic card type cylinder locking device according to any one of claims 1 to 5, wherein various members 11-22 installed in the cylinder housing 10 are finally accommodated as one unit.