JP2005171576A - Cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock capable of easily preventing a picking, at the same time, installing tumblers of integral multiple because of having a plurality of key holes and manufacturing extremely various kinds of locks in comparison with before in a state to remain unchanged in the length of a rotor. <P>SOLUTION: In the cylinder lock having a cylinder body and the rotor capable of being engaged with the cylinder body by a plurality of tumblers and being rotatably placed in the cylinder body, making each tumbler operate by inserting a key into the cylinder body and rotating the rotor to unlock after the engagement of the cylinder body with the rotor has been released, it is so constituted that a plurality of key holes are formed in the rotor and, at the same time, that the tumbler is set in each of the key holes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cylinder lock, which can be used to prevent illegal unlocking by making it possible to make more different keys than in the past with a predetermined rotor length and making picking or the like difficult.

  A conventional cylinder lock includes a cylinder body, and a rotor that can be engaged with the cylinder body by a plurality of tumblers and arranged to be rotatable in the cylinder body. In general, the tumblers are inserted into the key holes and actuated against elasticity, and the engagement between the cylinder body and the rotor is released, and then the rotor is rotated to unlock.

JP 2002-266533 A

  However, in such a conventional cylinder lock, since the key hole is unique, when unlocking without using the key, it is easy to operate the release of the tumbler and the rotation of the rotor in the key hole by one person's work. As a result, there was a disadvantage that it was easy to pick up illegally.

  An object of the present invention is to eliminate such inconvenience.

  In order to achieve the above object, the cylinder lock according to the present invention has a cylinder body and a rotor that can be engaged with the cylinder body by a plurality of tumblers and is rotatably arranged in the cylinder body. Forming a plurality of key holes in the rotor in a cylinder lock in which a key is inserted into the key hole of the rotor to operate each tumbler and the rotor is unlocked after releasing the engagement between the cylinder body and the rotor Then, the tumbler is installed in each keyhole.

  Note that the engagement stroke of the cylinder with respect to the cylinder body, which is different in the contact position of the tumbler with the key in each keyhole, may be made different.

  A plurality of keyholes can also be formed substantially in parallel.

  Further, the lengths of the plurality of keyholes in the longitudinal direction can be made different.

  Further, in configuring the key, a plurality of key bodies can be provided so as to protrude from a single gripping portion.

  The plurality of key bodies can be stacked.

  A cylinder lock according to the present invention includes a cylinder body, and a rotor that can be engaged with the cylinder body by a plurality of tumblers and is rotatably arranged in the cylinder body, and a key is inserted into a key hole of the rotor. In a cylinder lock that operates each tumbler to release the engagement between the cylinder barrel and the rotor and then rotates the rotor to unlock the rotor, a plurality of key holes are formed in the rotor and the tumbler is formed in each key hole. When unlocked without using a key, it is necessary to simultaneously release the tumbler and rotate the rotor in the plurality of keyholes, which requires at least four operations.

  Therefore, if this cylinder lock is used, since it is extremely difficult to perform unauthorized unlocking by one person's work, picking can be easily prevented.

  In addition, if this cylinder lock is used, there are multiple keyholes, so an integer multiple of the tumbler can be installed compared to the conventional one. A variety of locks can be made.

  In addition, if the engagement stroke with respect to the cylinder body of the shi, which is different in the contact position of the tumbler with the key in each key hole, different operations are performed in each key hole for unauthorized unlocking. Since it is necessary, unauthorized unlocking is further difficult, and as a result, it can further contribute to prevention of picking. In addition, since the combination of tumblers is complicated, a wider variety of locks can be manufactured.

  In addition, if the plurality of key holes are formed substantially in parallel, the tumbler can be easily installed in the rotor, so that the rotor and thus the lock can be easily manufactured.

  Further, if the lengths of the plurality of keyholes in the longitudinal direction are made different, the shape of the tumbler in the lock can be made different, and the combination can be complicated, so that various types of locks can be manufactured. be able to.

  Further, when configuring the key, if a plurality of key bodies protrude from a single gripping portion, the cylinder lock can be locked or unlocked by a single key operation. Despite its complexity, it is easy to handle.

  Further, if the plurality of key bodies are stacked, the keyhole of the cylinder lock and the adjacent tumbler hole and engagement groove can be integrally formed, and the cylinder lock can be easily manufactured.

  The present invention is characterized in that it can prevent unauthorized unlocking and can create various types of locks without changing the length of the rotor. In particular, it is easy to apply to the prevention of unauthorized unlocking.

  1 is a plan view of the lock according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 5 is a perspective view of a key used for this lock, FIG. 6 is an operation state diagram corresponding to FIG. 2, FIG. 7 is an operation state diagram corresponding to FIG. 3, and FIG. 8 is an operation state diagram corresponding to FIG. FIG. 9 is a perspective view of another key.

  1-4, S is a cylinder lock, 10 is the cylinder body. An opening step 11 is formed on the inner peripheral surface of the opening of the cylinder body 10. Reference numerals 12 and 12 denote engaging grooves, which are formed on the inner peripheral surface of the cylinder body 10 in the axial direction. The functions of the opening step 11 and the engagement groove 12 will be described later.

  Reference numerals 13 and 13 denote escape grooves, which are formed on the inner peripheral surface of the cylinder body 10 on the opposite side of the engagement groove 12. The relief grooves 13 allow the tumblers 32 and 52, which will be described later, to project and slide in the counter-biasing direction.

  Reference numeral 20 denotes a rotor, which is fitted into the rotor 10 so as to be rotatable from the opening of the cylinder 10 with almost no gap. The upper flange 21 of the rotor 20 is locked to the opening step portion 11 of the cylinder body portion 11 to prevent the rotor 20 from falling off.

  Reference numeral 22 denotes a locking lever, which is externally fitted and fixed to a downward projecting end of the rotor 20 from the cylinder body 10. The locking lever 22 swings integrally with the rotor 20 and engages or releases with an engaging member (not shown) to unlock the cylinder lock 10.

  30 and 50 are elongated hole-shaped key holes, which are formed in the axial direction of the rotor 20, respectively. These key holes 30 and 50 are arranged substantially parallel to the left and right positions with the axis of the rotor 20 as the center. Note that the lengths of the key holes 30, 50 in the longitudinal direction may be the same or different.

  31, 31,..., 51, 51,... Are tumbler holes and are formed in the rotor 20. Of these tumbler holes 31, 31,..., 51, 51,..., The tumbler holes 31, 31,... Are arranged so as to cross the key hole 30, and the tumbler holes 51, 51,. doing.

  32, 32,..., 52, 52,... Are inserted into the corresponding tumbler holes 31, 31,..., 51, 51,. These tumblers 32, 32,..., 52, 52,... Are protruded from the rotor 20 by corresponding compression springs (coil springs) 33, 33,. The engaging groove 11 is elastically engaged.

  34, 34,..., 54, 54,... Are notches and are formed on the inner edges of the corresponding tumblers 32, 32,. These notches 34, 34,..., 54, 54,... Substantially coincide with the positions overlapping the key holes 30, 50 of the rotor 20.

  35, 35,..., 55, 55,... Are key-yama contact edges (corresponding to the “contact position” of the present invention; the contact edge of the key-yama 7181 described later), and corresponding notches 34, 34,. , 54, 54,. .. Are formed on the side opposite to the urging direction of the compression springs (coil springs) 33, 33,..., 53, 53,. The position of this keyyama contact edge 35,35, ..., 55,55, ... is the corresponding tumbler 32,32, ..., 52,52, ... of the same keyhole 30,50 and another keyhole 30,50. The tumblers 32, 32,..., 52, 52,. For this reason, the key 60 of the key 60 for sliding each tumbler 32, 32, ..., 52, 52, ... against the compression springs (coil springs) 33, 33, ..., 53, 53, ... 71,71,…, 81,81,… must be different.

  In FIG. 5, reference numeral 60 denotes a key used for the lock 10, and key bodies 70, 80 are protruded from the grip portion 61. The key body 70 is inserted into the keyhole 30, and the key body 80 is inserted into the keyhole 50. For this reason, the key buns (concave and convex) 71, 71,... Of the key body 70 are in contact with the key limb contact edges 35, 35,... Of the tumblers 32, 32,. 32,... Are formed so as to be slidable in the disengagement direction, and the key mountain (uneven shape) 81, 81,... Of the key body 80 is the key mountain of the tumbler 52, 52,. Are contacted with the contact edges 55, 55,... So as to be slidable in the direction of releasing the engagement of the tumblers 52, 52,.

Next, based on FIGS. 6-8, the operation method of the said cylinder lock 10 is demonstrated.
As shown in FIGS. 6 to 8, the key bodies 70 and 80 of the key 60 are inserted into the key holes 30 and 50 of the cylinder lock 10 in the locked state, respectively.

  Then, it corresponds to the key action 71, 71,... Of the key body 70, the cam action of the tumblers 32, 32,... Corresponding to the key mountain contact edges 35, 35,. These tumblers 32, 32,..., 52, 52,... Correspond to the compression springs (coil springs) 33, 33 corresponding to the tumblers 52, 52,. ,..., 53, 53,... Against the engaging groove 12 in the cylinder body 10.

  For this reason, since the rotor 20 can rotate around the axis, the operator rotates the rotor 20 by rotating the key 60, and swings the locking lever 22 to release it from the engaging member. Can be unlocked.

  In the case of locking, the key bodies 70 and 80 of the key 60 are inserted into the key holes 30 and 50 of the cylinder lock 10 in the unlocked state, respectively. In this state, since the rotor 20 is rotatable, the operator rotates the key 60 as it is, and the compression springs (coil springs) 33, 33,... Corresponding to the tumblers 32, 32,. , 53, 53,..., 53, 53,..., 53, 53,.

  FIG. 9 shows another embodiment of the key 60 in which two key bodies 70 and 80 are stacked. In this way, the key holes 30, 50 and the adjacent tumbler holes 31, 31, ..., 51, 51, ... and the engaging grooves 12, 12 can be integrally formed, and the cylinder lock 10 can be manufactured. It is easy to do.

  It can be used to prevent unauthorized unlocking or to manufacture various types of locks without changing the length of the rotor.

FIG. 1 is a plan view of a lock according to the present invention. 2 is a sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IX-IX in FIG. FIG. 5 is a perspective view of a key used for this lock. FIG. 6 is an operation state diagram corresponding to FIG. FIG. 7 is an operation state diagram corresponding to FIG. FIG. 8 is an operation state diagram corresponding to FIG. FIG. 9 is a perspective view of another key.

Explanation of symbols

S ... Cylinder lock
10… Cylinder body
20… Rotor
32… tumbler
30… keyhole
35… Keyyama contact edge (contact position)
50… keyhole
52… tumbler
55… Keyyama contact edge (contact position)
60… key
70… Key body
80… Key body

Claims (6)

A cylinder body, and a rotor which is engageable with the cylinder body by a plurality of tumblers and is rotatably arranged in the cylinder body, and each tumbler is operated by inserting a key into a key hole of the rotor, A cylinder lock for unlocking by rotating the rotor after releasing the engagement between the cylinder and the rotor, wherein the rotor is formed with a plurality of key holes, and the tumbler is installed in each key hole. Tablets. 2. The cylinder lock according to claim 1, wherein a contact position of the tumbler with the key in each key hole is different. 2. The cylinder lock according to claim 1, wherein a plurality of key holes are formed substantially in parallel. 2. The cylinder lock according to claim 1, wherein the lengths of the plurality of key holes in the longitudinal direction are different. 2. The cylinder lock according to claim 1, wherein the key is formed by projecting a plurality of key bodies on a single gripping portion. 6. The cylinder lock according to claim 5, wherein the plurality of key bodies are overlapped.

Images