JP5059771B2 - Cylinder lock - Google Patents

Abstract

The lock has a housing and a core and respective pins which can be moved by a mechanically coded key into a position allowing rotation of the core. A locking mechanism is controlled by electronic coding of the key. One core pin (13) has a lever (14) arranged such that when the key is withdrawn the pin is in a position such that its lever arm extends beyond both sides of the pin to lock a rotation locking mechanism in a position in which it prevents rotation.

Description

  The present invention relates to a cylinder lock as described in the preamble of claim 1.

  Cylinder locks equipped with electronic reading heads are known. The read head cooperates with, for example, an armature, and the armature itself has a blocking member that prevents rotation of the cylinder core. The device disclosed in DE 1031 1986 is similar to the present invention, but with significant drawbacks. In the above description (paragraph 0011), it is described that the notch that determines the travel of the detection core pin is not processed to a full depth in the key. This is because if the notch has a complete depth, it is impossible to distinguish between a state where the key is inserted and a state where the key is pulled out. Therefore, this electronic cylinder lock can only be combined with an existing mechanical cylinder lock (old equipment) in a limited manner. Furthermore, the additional arrangement in the radial direction of the electric motor, the spring and the operation member described in the above specification requires a lot of space. For example, a sufficient mounting space cannot be secured in a cylinder core having a diameter of about 13 mm. As a further disadvantage, the contact coupling with the illustrated key abuts the key outside the area to be machined, so different adaptations are required for each key shape. A particularly serious defect is the magnet arrangement shown in claim 10 and FIG. This magnet prevents free rotation of the rotation stopper and unauthorized rotation from outside, but this magnet can have only a small attractive force so that the torque of a small electric motor can overcome the attractive force of the magnet. . Such a magnet arrangement can prevent the adjustment member from rotating to the release position, for example, due to vibrations (when the key is inserted), but cannot prevent forced rotation by an external magnet having a strong magnetic field strength. In particular, the lock area that is sensitive to the action from the outside in the front area of the lock is a part that can be accessed relatively easily for various unauthorized operations, which is also a drawback.

  An object of the present invention is to achieve the structure of a cylinder lock that eliminates the above-mentioned drawbacks, has a wide range of applications, and ensures a reliable and safe function.

  The object is solved by the features of claim 1. Preferred configurations will become apparent from the dependent claims.

  The first important point of the present invention is that the inserted key is arranged so as to traverse in the detection core pin, protrudes from both sides thereof, and is tiltably supported by a bolt or a lever pin fixedly arranged in the core pin. In the lever. With the key pulled out, the upper end position of the detection core pin is determined by the tilt lever. That is, the tilt lever is pressurized upward through the housing pin by the housing spring, and after rotating the rotation stopper to the cut-off angle position, both sides are supported in the cylinder core and rotated to the predetermined cut-off angle position. Lock the stopper. When the key is inserted again, the key presses the core pin downward together with the blocking pin one or more times depending on the arrangement, and finally the core pin is positioned in the corresponding notch, but the shape of the notch Regardless, the tilting lever is moved to a position to release the locking of the rotation stopper. The notch cut out deepest in the key is slightly distinguished from the upper end position of the core pin determined by the housing. Even in such a notch, the tilt lever can freely rotate or spring. By the rotation urged in step (b), the tilting lever is released from the support on both sides in the housing, so that the rotation stopper is released.

  The second essential point of the present invention is that a magnetic field acting from the outside using a strong permanent magnet that moves a motor, that is, a rotation stopper, locked at a cut-off angle position to a release position after mechanically inserting a proper key. It relates to the safety against unauthorized operation by The solution lies in that both the rotation stopper or at least the lever arm for blocking the rotation stopper and the blocking member are made of a soft magnetic material. The field lines of the external magnet are always concentrated at the minimum distance point between both members, where the maximum magnetic flux density and maximum mutual attractive force are reached, preventing the rotation stopper from rotating out of the blocking angle position. This is because in that case, the distance between the rotation stopper and the blocking member is inevitably increased. The stronger the magnetic field, the stronger the mutual attractive force of both members at the blocking position.

  Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

  Reference numeral 1 in FIG. 1 is a cylinder core. A horizontal hole can be recognized at the lower left of the drawing, and a connection line (not shown) is routed from the spring contact 24 to the electronic device 18 in the horizontal hole, and further connected from the electronic device 18 to the electric motor 5. The electric motor 5 is inside the electric motor-side insert 7 that accommodates the electric motor 5. Reference numeral 8 denotes an insert for accommodating the blocking mechanism.

  The DD section (FIG. 3) passes through the center of the blocking member 4 and the blocking arm of the rotation stopper 6 (see also FIG. 2 or the BB section). The distance 26 allows free rotation of the rotation stopper 6 on the one hand, but is a minimum distance point with respect to the blocking member 4, so that the lines of magnetic force acting from the outside are strengthened at this minimum distance point. When the cylinder core 1 is rotated in the housing 2 without electronic authentication, the hook-shaped portion of the blocking member 4 comes into contact with the concave portion 27 of the sliding surface. The housing 2 includes a plastic lid 3 corresponding to the recess.

The section EE (FIG. 4) passes through the tilt lever 14. The tilting lever 14 is supported in a swingable manner by a lever pin 15 fixed in the detection core pin 13 so as to cross its longitudinal axis. The lever arm of the rotary stopper 6 held at the blocking angle position by the tilt lever 14 is shown in cross section, and the magnet 12 acts on this lever arm to prevent unauthorized operation due to vibration, striking, etc. when the key is inserted. When the key 20 is inserted and the detection core pin 13 moves slightly downward, the tilting lever 14 is detached from the support surface in the housing 2, and the lever arm of the rotation stopper 6 is centered on the lever pin 15. It is tilted to the right until it can be rotated. For this purpose, it is sufficient that the rotation angle of the tilt lever 14 regulated by the support ridge of the detection core pin is about 30 degrees in the right direction. The tilt lever 14 can be rotated only by gravity due to a difference in length or mass distribution of each side lever arm portion , or by auxiliary biasing of a spring (not shown), or driven and rotated by the electric motor 5. This can be done directly by the lever arm of the rotating stopper 6.

  A part of the electronic device 18 and the attached cover plate 19 can be seen on the left side of FIG. 5, and the housing pin 16 urged by a spring on the cover plate is slidable. The FF cross section is in the plane of the operating member 9, which is slidable radially inward within the insert 8, and has a symmetrical sliding surface and a groove that engages the S-shaped spring 10. And a long hole.

  In the locked state in which the key is pulled out, the operation member 9 protrudes into a (small) recess (next to the recess for the blocking member 4) of the housing 2, but compared with the cylinder core 1 being rotated in the housing 2. The operation member 9 is slid inward in the radial direction at a small rotation angle, so that the operation member 9 is linear with the S-shaped spring 10 (FIG. 2) only when the rotation stopper 6 has been rotated to the release angle position in advance. The blocking member 4 is moved to the inward release position by the arm.

  2 shows the overall arrangement of the blocking mechanism in addition to the electronic device 18 shown in the cross section. A rotation stopper 6 having two lever arms having an angular phase difference of 90 degrees is carried on the rotation shaft of the electric motor 5. When the key is inserted, the tilting lever 14 is vertical, that is, perpendicular to the plane shown. When the key is pulled out, the rotation stopper 6 is mechanically rotated to the cut-off angular position and held at that angular position. The S-shaped spring 10 that is pivotally supported by the pin 11 and supported at one end inside the housing performs a plurality of functions and partial movements that are successively performed in a locking process and an unlocking process. In the illustrated position, the S-shaped spring 10 urges the operation member 9 radially outward at a central leg bent in a loop shape that abuts the abdomen between the groove and the long hole of the operation member 9, Similarly, the blocking member 4 is urged to the blocking position by the long leg portion of the S-shaped spring 10 inserted through the long hole. From this state, when the cylinder core is rotated (with a key) relative to the housing and the operating member 9 moves inward, the linear long leg portion of the S-shaped spring 10 inserted through the long hole of the operating member 9 is Not linked. However, the radial movement of the operating member 9 is transmitted to the central leg bent in a loop shape, and the central leg rotates around the pin 11 together with the long leg so that the rotation stopper 6 is in the release angle position. As long as the blocking member 4 can freely move inward, at least partial movement of the blocking member 4 inward can be caused. As the operation member 9 is further pushed in the radial direction, the long leg portion of the S-shaped spring 10 is connected to the other end of the long hole of the operation member 9, and the rotation stopper 6, that is, the blocking member 4 slides in the radial direction. If it is not released, it will be directly subjected to bending load. In that case, there is a possibility that the long leg portion of the S-shaped spring 10 may be permanently deformed beyond the elastic limit without the operation member 9 having a long hole or without subdividing the spring motion as described above. That is, the arrangement as described above allows the overall bending of the S-shaped spring 10 to be divided into individual rotating and swinging motions of each spring portion, and each spring portion to be loaded sequentially.

  FIG. 2 (BB cross section) partially shows a core pin 13 for detection (in this case, on the back side) whose side portion is cut in the region of the tilt lever 14. The thick circle is generated in terms of pressure technology due to the tolerance between the circumference of the core hole and the circumference of the core pin 13. Reference numeral 25 denotes a lateral recess, in which the core pin 13 can move freely in the axial direction with the tilting lever in the axial direction to the support ridge in the housing over the entire movement stroke, while simultaneously rotating in both directions by the support ridge. Movement is prevented.

  FIG. 6 shows a so-called fork-shaped key 20 without both metal fittings and without an electronic device, but with a contact surface as a key contact 22 and an insulating contact holder 21 in the area of a conventional lock. The key contact line 23 extends from the key contact 22 into the area of the key electronic device.

  FIG. 7 shows a spring contact 24 that is a counterpart member of the key contact 22 housed in the insulating holder 21 of the cylinder core 1. In addition, it is possible to sufficiently recognize the blocking member 4, the operation member 9, and the S-shaped spring 10 that are partially protruding from the cylinder core.

It is a side view which shows the cylinder core of a cylinder lock. It is BB sectional drawing of this cylinder core. It is DD sectional drawing in the position of the interruption | blocking member. It is EE sectional drawing in the plane of a tilting lever. It is FF sectional drawing in the plane of an operation member. It is a figure which shows the key which has a fixed contact. 3 is a perspective view showing a cylinder core having a spring contact 24. FIG.

Claims (9)

A cylinder core that is rotatably supported in the cylinder lock housing;
A plurality of core pins and housing pins movable by mechanically encoded keys to an aligned position of the cylinder lock housing / cylinder core separation surface where rotational movement of the cylinder core is allowed;
An electric / electronic shut-off device disposed in the cylinder lock housing and controllable by electronic encoding of the key;
A cylinder lock comprising:
The shut-off device has an operation member (9) movable by rotation of the cylinder core in the cylinder lock housing, and the operation member cooperates with a spring member (10) and is coupled to the spring member. The blocking member (4) can be retracted by receiving a spring force into the recess (27) on the inner peripheral surface of the cylinder lock housing (2) from the blocking position extending to the cylinder lock housing / cylinder core separation surface. And the movement from the blocking position is prevented by the rotation stopper (6) at the blocking angle position,
One detection core pin (13) of the core pins includes a tilt lever (14), and the tilt lever can be swung by a bolt or a lever pin (15) disposed across the longitudinal axis of the core pin (13). And in a state where the key is pulled out, the lever arm portion is oriented in a direction intersecting with the longitudinal direction of the core pin (13), and the lever arm portion is disposed at a predetermined position so as to protrude on both sides of the diameter of the core pin. cylinder lock, characterized in that it is configured such that the lever the rotation stopper by protruding one end portion of the arm portion (6) is engaged with the cutoff angular position.   The cylinder lock according to claim 1, wherein the tilting lever (14) is supported by a cylinder core on both sides in the blocking position.   The cylinder according to any one of the preceding claims, characterized in that a magnet (12) is provided in the cylinder core for preventing unauthorized operation of the rotation stopper (6) due to vibration, striking or the like. Tablets.   Cylinder lock according to any one of the preceding claims, characterized in that the spring member (10) is formed as an S-shaped spring. Said legs of said S-shaped spring to move the blocking member in the radial direction (10), acts as a support for swinging the one side is supported and around which at axially supported point (11), said blocking member (4 The cylinder lock according to claim 4 , wherein the cylinder lock acts as a support body which is supported on both sides and receives a bending load in the second movement stage in which the movement in the radial direction is prevented by the rotation stopper (6) .   The cylinder lock according to any one of the preceding claims, further comprising a spring member for rotating the tilting lever (14) to a position for releasing the rotation stopper (6). The cylinder lock according to any one of the preceding claims, wherein the lever arm portions of the tilt lever (14) have different lengths starting from the lever pin (15).   Cylinder lock according to any one of the preceding claims, characterized in that the rotation stopper (6) is entirely or partly composed of a soft magnetic material.   The cylinder lock according to any one of the preceding claims, wherein the blocking member (4) is made of a soft magnetic material.

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