JP2006132107A - Side-bar type cylinder lock for interchange of lock handle device for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side-bar type cylinder lock for interchange capable of being easily replaced with a disk tumbler type cylinder lock in a lock handle device for a door. <P>SOLUTION: A lock receiving section 5 receiving a rotor 7 of the disk tumbler type cylinder lock 6 is formed in the handle 3 or a fixed body 2. Two locking grooves 12 detachable to the interlocking end section 11 of a disk tumbler 10 are formed in the inner circumferential surface of the lock receiving section 5. A diameter of the outer circumference of a plug 18 of the side-bar type cylinder lock 17 is made to coincide with a diameter of the inner circumference of the lock receiving section 5. The outer circumferential outline of a root section of an angle locking section 29 of a side-bar 24 detachable to the locking grooves 12 is formed in the shape of a cross-section almost coincident with the inner circumferential outside of an opening section of the locking grooves 12 of the lock receiving section 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a replacement sidebar cylinder used for converting a disk tumbler type lock mechanism into a sidebar type lock mechanism in a door lock handle device mounted on a door of various equipment storage cases and the like. It relates to locks.

In a lock handle device for a door, in order to prohibit a handle operation after the door is closed and locked, a lock unit is incorporated in the handle or the fixed body, and the handle is locked to the fixed body. As this lock unit, a disc tumbler type cylinder lock which is mass-produced inexpensively is generally used (see Patent Document 1).

In the door lock handle device incorporating the disc tumbler type cylinder lock, the rotor of the disc tumbler type cylinder lock is accommodated in the lock accommodating portion provided in the handle or the fixed body, and the tumbler accommodation hole intersecting the key insertion hole is the rotor. And two locking grooves for receiving the locking end portions of the disk tumblers received in the tumbler receiving holes are formed on the inner peripheral surface of the lock receiving portion so as to face the fixed body, A stopper plate for locking the handle is provided in conjunction with the rotor, and the disk tumbler is retracted against the bias of the tumbler spring by the key pile portion of the key inserted into the key insertion hole. The locking end portion is made to escape from the locking groove of the lock receiving portion, and the rotor is rotated in the unlocking direction with the key to restrain the handle by the stopper plate. It is configured so as to release the.

A person who intends to illegally operate the devices stored in the casing or steal the stored items includes a person who illegally unlocks the disk tumbler by moving the disk tumbler to the unlocking position with a special picking tool. As a measure for suppressing such unauthorized unlocking, it is conceivable to replace the disk tumbler type locking mechanism with a sidebar type locking mechanism (see Patent Document 1) that is remarkably excellent in security performance. When a handle or a fixed body including a lock housing part is newly designed and manufactured, the lock mechanism can be easily replaced, but it is not easy to replace the lock mechanism in the existing door lock handle device.

The reason for this is that when used as a single unit, the inner cylinder of the disc tumbler cylinder lock is fitted to the outer cylinder, so the outer peripheral contour of the entire lock is cylindrical as with the sidebar cylinder lock. However, when used in a lock handle device for a door, the outer cylinder portion of the disc tumbler cylinder lock is constituted by a handle or a lock receiving portion of a fixed body, and the inner periphery of this lock receiving portion is Since the surface is provided with a locking groove for engaging and disengaging the locking end portion of the disk tumbler, the sidebar cylinder lock manufactured so that the outer cylinder diameter matches the inner peripheral diameter of the lock housing portion can be This is because a part of the locking groove is exposed as a gap on the front surface of the handle or the fixed main body when it is attached to the accommodating portion. This is not only unsightly in appearance, but also has the disadvantage that the tool is inserted into the gap between the outer cylinder and the lock housing portion and the lock is pierced, making it unusable for practical use.

On the other hand, even if the outer cylinder is removed from the sidebar cylinder lock and only the plug is used, and the outer diameter of the plug matches the inner diameter of the lock receiving portion, the sidebar locking portion of the sidebar cylinder lock The width direction dimension of the side bar is much smaller than the width direction dimension of the locking end portion of the distumbler in the disc tumbler type cylinder lock. When they are engaged with each other, there is a disadvantage that a considerably wide gap is generated between the two, and the rotation restriction of the plug cannot be accurately executed at a predetermined position.

JP 2001-73597 A JP 2000-314250 A

An object of the present invention is to provide a replacement sidebar type cylinder lock which can easily replace a disk tumbler type lock mechanism of an existing door lock handle device with a sidebar type lock mechanism without any inconvenience.

The replacement sidebar cylinder lock 17 according to the present invention will now be described with reference to the accompanying drawings. The handle 3 is mounted on the fixed body 2 fixed to the door 1, and the handle 3 is operated by operating the handle 3. And the door 1 is locked in a closed position with respect to the fixed frame 44, and the disc tumbler cylinder lock 6 is placed in the lock receiving portion 5 provided in the handle 3 or the fixed body 2. Two locking grooves in which the rotor 7 is housed and a tumbler housing hole 9 intersecting the key insertion hole 8 is formed in the rotor 7, and the locking end 11 of the disk tumbler 10 housed in the tumbler housing hole 9 is engaged and disengaged. 12 is formed on the inner peripheral surface of the lock housing portion 5 so as to face the diameter, and a stopper plate 13 for locking the handle 3 to the fixed body 2 is interlocked with the rotor 7 and inserted into the key insertion hole 8. In the key mountain 15 of the key 14 Thus, by retracting the disk tumbler 10 against the bias of the tumbler spring 16, the locking end portion 11 of the disk tumbler 10 is released from the locking groove 12 of the lock housing portion 5, and the rotor 7 is unlocked. In the door lock handle device that is turned in the direction to release the restraint of the handle 3 by the stopper plate 13, it is used in exchange for the disc tumbler cylinder lock 6,
The plug 18 is formed by matching the outer diameter of the plug 18 with the inner diameter of the lock housing portion 5, and two sidebar housing holes 19 are arranged in the plug 18 in parallel with the key insertion holes 20 of the plug 18. In the area opposite to the key insertion hole 20 with respect to the side bar accommodation hole 19, two rows of pin accommodation holes 21 are provided in the plug 18 so as to intersect the key insertion hole 20. A slit 23 communicating with the pin accommodation hole 21 is provided in the bottom wall portion 22, and the base end plate portions 25 of the two side bars 24 accommodated in the side bar accommodation holes 19 are fitted into the slits 23, and an undercut of the side bar 24 is performed. The sidebar spring 27 is urged in the protruding direction by the sidebar spring 27 formed in the portion 26, and the angle lock portion 29 of the sidebar 24 is removed in the state where the key 28 is removed from the key insertion hole 20. The lock pins 30 of the lock housing 5 are engaged with the lock grooves 12, and the two rows of lock pins 30 housed in the pin housing holes 21 are urged toward the key insertion holes 20 by the lock pin springs 31. When the distal end portion protrudes into the key insertion hole 20 and the distal end portion of the lock pin 30 engages with the cord concave portion 32 on the side surface of the key 28, the cord groove 32 on the peripheral surface of the intermediate portion of the lock pin 30 forms the slit 23. When the side bar 24 is pushed into the plug 18 by being pushed by the inner wall surface of the locking groove 12 when the plug 18 is rotated, the base plate portion 25 of the side bar 24 is inserted into the cord groove of the lock pin 30. The outer peripheral contour of the base portion of the angle lock portion 29 of the side bar 24 has a cross-sectional shape that substantially matches the inner peripheral contour of the opening portion of the lock groove 12 of the lock housing portion 5. Formed.

As described above, in the replacement sidebar cylinder lock 17 of the present invention, the plug 18 is formed so that the outer diameter of the plug 16 matches the inner diameter of the lock housing portion 5, and the two sidebar housing holes 19 are formed. Is arranged in parallel with the key insertion hole 20 and provided on the plug 18 so as to face the diameter, and the sidebar spring 27 accommodated in the undercut portion 26 of the sidebar sidebar 24 biases the sidebar 24 in the protruding direction. Then, the angle lock portion 29 of the side bar 24 is engaged with the lock groove 12 of the lock storage portion 5, and the outer peripheral contour of the root portion of the angle lock portion 29 is set within the opening of the lock groove 12. Since the cross-sectional shape substantially coincides with the peripheral contour, after the rotor 7 of the disc tumbler cylinder lock 6 is removed from the lock accommodating portion 5 of the existing door lock handle device, the sidebar cylinder lock 17 18 plugs When inserted into the lock receiving portion 5, the lock receiving portion 5 itself is made up with almost no gap by the plug 18, so that an unnatural gap is formed on the front face of the handle 3 or the fixed body 2 even though the lock mechanism is replaced. Is not exposed, and there is no risk that a sidebar cylinder lock can be taken out by inserting a tool through the gap.

Further, when the key 28 is removed from the key insertion hole 20 of the plug 18, the angle lock portion 29 of the side bar 24 is engaged with the lock groove 12 of the lock housing portion 5 under the bias of the side bar spring 27. However, since the outer peripheral contour of the root portion of the angle lock portion 29 is formed in a cross-sectional shape that substantially matches the inner peripheral contour of the opening portion of the lock groove 12 of the lock housing portion 5, the angle lock portion 29 Thus, no unnecessary gap is generated between the outer surface of the root portion and the inner surface of the opening of the locking groove 12, and the rotation restraint of the plug 18 can be accurately executed at a predetermined angular position.

In the illustrated embodiment, the fixed main body 2 of the door lock handle device has a main portion fitted into the mounting hole 34 of the door 1 from the front side, and the front flange 35 is abutted against the front surface of the door 1 from the back side. A washer plate 36 having a U-shaped cross section fitted to the main part of the fixed body 2 is abutted against the back surface of the door 1, and a screw 38 is screwed into the fixing hole 39 on the back wall portion of the fixed body 2 from the through hole 37 of the washer plate 36. Thus, the door 1 is fastened and fixed.

As the lock mechanism 4, a main shaft 41 having a lock plate 48 fixed to a rear end portion thereof by a bolt 69 is rotatably fitted in a bearing tube portion 40 formed to protrude in the front-rear direction at the base end portion of the fixed main body 2. . The front end portion of the main shaft 41 is inserted into a back space 42 at the base end portion of the handle 3, and the handle 3 and the main shaft 41 are connected by a transverse pivot shaft 43.
When the handle 3 is obliquely protruded and rotated around the transverse pivot 43 from the fixed main body 2, and the handle 3 is gripped and the main shaft 41 is rotated in a predetermined direction, the lock plate 48 is received by a receiving part (not shown) on the fixed frame 44 side. Therefore, the door 1 is unlocked and the door 1 is opened by pulling the handle 3 forward.

As a lock unit before replacing the lock mechanism, a known disc tumbler cylinder lock 6 is used without an outer cylinder. The lock receiving part 5 formed in the thick part at the tip of the handle 3 accommodates the rotor 7 of the cylinder lock 6 in a rotatable manner, and is equipped with a known retaining mechanism that is provided by spring biasing the outer periphery of the tip of the rotor 7. The rotor 7 is prevented from being removed from the lock accommodating portion 5 by engaging the claw plate 45 with the retaining groove 46 on the inner peripheral surface of the lock accommodating portion 5.

A guide hole 49 of the clasp plate 13 is formed vertically in the thick part of the handle 3, and an eccentric protrusion 47 projecting from the tip surface of the rotor 7 is inserted into the passive hole 50 of the clasp plate 13. ing. When the key 14 is inserted into the key insertion hole 8 of the rotor 7, the key pile portion 15 of the key 14 presses the edge of the key insertion hole 53 of the disc tumbler 10, so that the locking end portion 11 of the disc tumbler 10 is locked to one side. The base end of the disc tumbler 10 enters and exits the other locking groove 12. When all the disk tumblers 10 are pulled into the tumbler receiving holes 9 of the rotor 7 against the bias of the tumbler spring 16 made of a compression coil spring, the locking end 11 of the disk tumbler 10 is connected to the lock receiving part 5. In order to escape from the locking groove 12, the rotational constraint of the rotor 7 with respect to the handle 3 is released.

When the key 14 is turned in a predetermined direction at this stage, the stopper plate 13 is pulled by the eccentric protrusion 47 and pulled into the guide hole 49 side, and the leading end portion of the stopper plate 13 is a receiving groove portion of the back wall portion of the fixed body 2. In order to escape from 51, the handle 3 projects and rotates obliquely from the handle accommodating portion 58 of the fixed main body 2 by the urging of the leaf spring member 52. By gripping and rotating the protruding handle 3 around the main shaft portion 41, the lock plate 48 is detached from the receiving portion of the fixed frame body 44, and the locking of the door 1 to the fixed frame body 44 is released. .

When replacing the disk tumbler type cylinder lock 6 with the sidebar type cylinder lock 17, the key insertion hole 8 key 14 of the rotor 7 is inserted and all the disk tumblers 10 are immersed in the tumbler accommodation hole 9. The retaining claw plate 45 is pushed into the disabling position by the jig, and the rotor 7 is removed from the lock accommodating portion 5 of the handle 3.

The plug 18 of the side bar type cylinder lock 17 is formed by aligning the angle lock portions 29 of the pair of side bars 24 protruding from the outer peripheral surface with the pair of lock grooves 12 of the lock storage portion 5. Fit into 5. An outer peripheral groove 70 at the tip of the plug 18 is equipped with a known retaining claw plate 54 urged by a spring 69, and the claw plate 54 is secured to a retaining groove 46 on the inner peripheral surface of the lock housing portion 5. The plug 18 is prevented from being removed from the lock housing portion 5 by engaging with the lock receiving portion 5. The eccentric protrusion 55 on the tip surface of the plug 18 is fitted into the passive hole 50 of the clasp plate 13.

The outer peripheral opening edge of the side bar housing hole 19 is crimped inward, and the side bar 24 is prevented from being pulled out of the side bar housing hole 19 by the crimping portion 61. The spring retainer plate 62 with which the proximal end of the lock pin spring 31 abuts is fixed to the plug 18 by caulking.
When a regular key 28 having cord recesses 32 of a predetermined depth formed in two rows is inserted into the key insertion hole 20 of the plug 18, two rows of lock pins 30 are provided with lock pin springs 31 formed of compression coil springs. The two rows of pin accommodation holes 21 are pushed against the force, and the cord grooves 33 of the lock pins 30 come to positions facing the slits 23 between the pin accommodation holes 21 and the sidebar accommodation holes 19.

In this state, when a rotational force is applied to the plug 18 by the key 28, the slopes of the angle-shaped locking portions 29 of the two rows of side bars 24 are pushed against the opening edge of the locking groove 12 of the lock housing portion 5. The bar 24 moves in the centripetal direction against the bias of the sidebar spring 27 made of a compression coil spring, and the base end plate portion 25 of each sidebar 24 engaged with the slit 23 is the cord of each lock pin 30. It enters into the groove 33 for use.

As the base end plate portion 25 escapes into the cord groove 33 in this way, the angle lock portion 29 of the side bar 24 completely escapes from the lock groove 12 and enters the outer peripheral surface of the plug 18. The plug 18 rotates with respect to the handle 3. As the plug 18 rotates, the stopper plate 13 connected to the tip of the plug 18 escapes from the receiving groove 51 on the fixed body 2 side. Therefore, the handle 3 projects and rotates obliquely from the handle accommodating portion 58 of the fixed body 2 by the urging of the leaf spring member 52. By gripping and rotating the protruding handle 3 around the main shaft portion 41, the lock plate 48 is detached from the receiving portion of the fixed frame body 44, and the locking of the door 1 to the fixed frame body 44 is released. .

The door 1 that has been opened is closed, the handle 3 is rotated around the main shaft portion 41, the lock plate 48 is re-engaged with the receiving portion of the fixed frame 44, and the door 1 is locked in the closed position. To do. Thereafter, the handle 3 is rotated around the transverse pivot 43 and pushed into the handle accommodating portion 57 of the fixed body 2.
When the handle 3 is held in the lying down position and rotated backward to the original position of the plug 18, the two rows of side bars 24 are moved in the centrifugal direction by the urging of the tumbler spring 16, and the angle locks of the side bars 24 are locked. When the portion 29 enters the locking groove 24 of the lock housing portion 5, the proximal plate portion 25 escapes from the cord groove 33 of the lock pin 30.

When the key 28 is extracted from the key insertion hole 20 of the plug 18 in the state where the base end plate portion 25 of the side bar 24 is thus removed from the cord groove 33, each lock pin 30 corresponds to the depth of the cord recess 32. Then, the front end protrudes into the key insertion hole 20.
At this stage, since the proximal end plate portion 25 of the side bar 24 faces the side surface of the lock pin 30, the side bar 24 cannot be moved in the centripetal direction, and the plug 18 has two side bars 24. Thus, the handle 3 is restrained so as not to rotate. When the plug 18 rotates backward to the initial position, the stopper plate 13 is engaged again with the receiving groove portion 51 on the fixed frame body side, and the handle 3 is locked in the lying position.

When the number of the lock pins 30 arranged is the same, the key code is changed by changing the height position of the code groove 33 of the lock pin 30 according to the depth of the code recess 32 of the key 28. .
The two rows of pin receiving holes 21 are arranged in an offset shape in order to reduce the diameter of the cylinder lock device 17. The undercut portion 26 of the side bar 24 is formed over the entire length. A reversible key can also be formed by forming the code recesses 32 on both sides of the key 28.

As shown in FIGS. 10B and 10C, the eccentric protrusions 56 and 57 on the tip surface of the plug 18 can change the eccentric distance and position from the central axis of the plug 18. Further, instead of the eccentric protrusion 55, as shown in FIG. 10A, a shaft portion 59 having a small cross section is provided at the center of the front end surface of the plug 18, and a connecting hole having the same shape is formed in the stopper plate. The shaft portion 59 can be fitted into the connection hole, and the connection screw can be screwed into the screw hole 60.

In the illustrated embodiment, the plug 18 is equipped with a shutter 64 that closes the key insertion hole 20. The shutter 64 is disposed in a cap 63 fitted and fixed to the head of the plug 18, and is urged to move toward the front opening of the key insertion hole 20 by a shutter spring 65 made of a compression coil spring. A rotation angle restricting projection 66 is formed on the inner peripheral surface of the lock accommodating portion 5 of the handle 3 at a position shifted from the lock groove 12, and the plug 18 is provided with a rotation angle restricting projection which is in contact with and separated from the plug 18. 67 and 68 are formed.
The basic structure of the door lock handle device is not limited to the above, and the replaceable cider-type cylinder lock of the present invention is incorporated into various locking mechanisms.

It is a front view of the lock handle device for doors equipped with the disk tumbler type cylinder lock. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 and the handle is in a lying position. It is a perspective view of the principal part of the lock handle apparatus for doors in one Example of this invention, a disk tumbler type cylinder lock, and a sidebar type cylinder lock. It is a right view of the sidebar type cylinder lock of FIG. It is a principal part front view of the handle in the lock handle apparatus for doors of FIG. It is CC sectional view taken on the line of FIG. It is explanatory drawing which shows the operation | movement process of the disc tumbler type cylinder lock and sidebar type cylinder lock with which the handle | steering_wheel of FIG. 5 is mounted | worn. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a rear view which shows the different aspect of the plug used for a sidebar type cylinder lock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Fixed main body 3 Handle 4 Lock mechanism 5 Lock accommodating part 6 Disc tumbler type cylinder lock 7 Disc tumbler type cylinder lock rotor 8 Key insertion hole 9 Tumbler accommodating hole 10 Disc tumbler 11 Locking end 12 of the disc tumbler Groove 13 Stopper plate 14 Key 15 Key ring portion 16 Tumbler spring 17 Sidebar cylinder lock 18 Sidebar cylinder lock plug 19 Sidebar accommodation hole 20 Key insertion hole 21 Pin accommodation hole 22 Bottom wall portion of sidebar accommodation hole 23 Slit 24 Side bar 25 Side bar base plate portion 26 Side bar undercut portion 27 Side bar spring 28 Key 29 Side bar angle lock portion 30 Lock pin 31 Lock pin spring 32 Key cord recess 33 Lock pin cord groove 34 Mounting hole 35 Front flange 36 Seat Plate 37 Through-hole 38 Screw 39 Fixing hole 40 Bearing cylinder portion 41 Main shaft portion 42 Back space 43 Transverse pivot 44 Fixed frame body 45 Retaining claw plate 46 Retaining groove 47 Eccentric protrusion 48 Lock plate 49 Guide hole 50 Passive hole 51 Receiving groove 52 Handle leaf spring member 53 Key insertion hole 54 Retaining claw plate 55 Eccentric projection 56 Eccentric projection 57 Eccentric projection 58 Handle housing portion 59 Shaft portion 60 Screw hole 61 Clamping portion 62 Spring retainer plate 63 Cap 64 Shutter 65 Shutter Spring

Claims (1)

The fixed body 2 fixed to the door 1 is equipped with a handle 3, and the lock mechanism 4 interlocked with the handle 3 is driven by the operation of the handle 3, so that the door 1 is locked in the closed position with respect to the fixed frame body 44. The rotor 7 of the disc tumbler cylinder lock 6 is accommodated in the lock accommodating portion 5 provided in the handle 3 or the fixed main body 2, and the tumbler accommodating hole 9 intersecting the key insertion hole 8 is formed in the rotor 7. Two locking grooves 12 for engaging and disengaging the locking end portion 11 of the disc tumbler 10 accommodated in 9 are formed on the inner peripheral surface of the lock accommodating portion 5 so as to face each other in diameter. A stopper plate 13 for locking 3 is interlocked with the rotor 7, and the disk tumbler 10 is moved backward against the bias of the tumbler spring 16 by the key pile portion 15 of the key 14 inserted into the key insertion hole 8. ,disk The lock end handle 11 is released from the locking groove 12 of the lock housing 5 and the rotor 7 is rotated in the unlocking direction to release the restraint of the handle 3 by the stopper plate 13. In the apparatus, a sidebar cylinder lock 17 used in exchange for the disc tumbler cylinder lock 6,
The plug 18 is formed by matching the outer diameter of the plug 18 with the inner diameter of the lock housing portion 5, and two sidebar housing holes 19 are arranged in the plug 18 in parallel with the key insertion holes 20 of the plug 18. In the area opposite to the key insertion hole 20 with respect to the side bar accommodation hole 19, two rows of pin accommodation holes 21 are provided in the plug 18 so as to intersect the key insertion hole 20. A slit 23 communicating with the pin accommodation hole 21 is provided in the bottom wall portion 22, and the base end plate portions 25 of the two side bars 24 accommodated in the side bar accommodation holes 19 are fitted into the slits 23, and an undercut of the side bar 24 is performed. The sidebar spring 27 is urged in the protruding direction by the sidebar spring 27 formed in the portion 26, and the angle lock portion 29 of the sidebar 24 is removed in the state where the key 28 is removed from the key insertion hole 20. The lock pins 30 of the lock housing 5 are engaged with the lock grooves 12, and the two rows of lock pins 30 housed in the pin housing holes 21 are urged toward the key insertion holes 20 by the lock pin springs 31. When the distal end portion protrudes into the key insertion hole 20 and the distal end portion of the lock pin 30 engages with the cord concave portion 32 on the side surface of the key 28, the cord groove 32 on the peripheral surface of the intermediate portion of the lock pin 30 forms the slit 23 When the side bar 24 is pushed into the plug 18 by being pushed by the inner wall surface of the locking groove 12 when the plug 18 is rotated, the base plate portion 25 of the side bar 24 is inserted into the cord groove of the lock pin 30. The outer peripheral contour of the base portion of the angle lock portion 29 of the side bar 24 has a cross-sectional shape that substantially matches the inner peripheral contour of the opening portion of the lock groove 12 of the lock housing portion 5. Formed for door Replacement side bar type cylinder lock of Kkuhandoru apparatus.

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