JP2003138797A - Idler partition plate mechanism of rotary disk tumbler lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary disk tumbler lock difficult for picking. SOLUTION: At least one partition plate is designated as an idler partition plate 23. The plate is rockably supported around a support shaft 3. A recessed cutout 26 is formed on the free end part outside edge, and a duplicate key 6 is inserted. The recessed cutout 26 is matched with the inside edge of a locking bar 11 only when a plane part 61 of a blade abuts to an engaging projection part 25 of the idler partition plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating partition plate mechanism (hereinafter simply referred to as partition plate mechanism) in a novel rotary disc tumbler lock proposed by the applicant of the present invention, and is particularly called so-called picking. The present invention relates to a partition plate mechanism that makes it difficult to illegally unlock.

[0002]

2. Description of the Related Art The applicant has previously filed Japanese Patent Application No. 2001-31
Based on 6885, a new rotary disc tumbler lock, which is an improvement of the conventional so-called lever tumbler lock (rotary disc cylinder lock), has been proposed.

This rotary disc tumbler lock is
An outer cylinder having a cam groove formed along the generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and are stacked in the central axis direction with a gap between them are provided on the central axis. And an outer edge that extends along the generatrix of the inner tube, is guided movably in the radial direction at the outer peripheral portion of the inner tube, and engages with the cam groove. Has a locking bar urged in an outwardly projecting direction, and an annular rotary disc tumbler having a key insertion hole of a size capable of enclosing the key hole in the central portion in each slot between the partition plates. Is inserted, one part of its substantial part is swingably supported on a support shaft that penetrates the inner cylinder in the axial direction, and an unlocking notch is formed on the outer end edge of the free end. At the opening edge of the insertion hole, the locus of movement of the tip is the flat part of the blade of the duplicate key inserted in the key hole Is a backup pin that protrudes integrally with the engaging edge that interferes with the end edge, urges each rotary disk tumbler in the direction in which the engaging protrusion approaches the duplication key, and normally penetrates the inner cylinder in the axial direction. Locked to
On the other hand, when each of the engagement protrusions of these tumbler groups engages with the corresponding recess formed in the blade of the duplication key inserted in the keyhole, the unlocking notch of each rotary disc tumbler becomes the inner edge of the locking bar. The feature is that they are matched.

To further summarize the structure of the rotary disc tumbler lock described above, as shown in FIG. 1, an annular rotary disc tumbler 2 having a key insertion hole 1 having a size capable of enclosing the key hole in the central portion is supported. The unlocking notch 4 is formed on the outer edge of the free end while swingably supported on the shaft 3, while the movement locus of the tip is inserted into the key hole 5 at the opening edge of the key insertion hole 1. The engaging projection 7 that interferes with the flat surface portion or the end edge portion of the blade of the multi-key 6 is integrally projected, and each rotary disk tumbler 2 is biased in the direction in which the engagement projection 7 approaches the multi-key 6. Normally, the rotary pin is locked to the backup pin 8, while each of the engaging protrusions of the tumbler group engages with the corresponding recess 9 formed in the blade of the duplicate key 6 inserted into the key hole 5, when each rotary protrusion is engaged. Disc tumbler solution The notch 4 is intended to align with the inner edge of the locking bar 11.

[0005]

SUMMARY OF THE INVENTION The present invention is not intended to improve the novel rotary disc tumbler lock having the above-described structure, but a novel floating partition plate mechanism is added to the lock to make picking more difficult. The purpose is to further improve the safety of the rotary disk tumbler lock as a lock.

[0006]

In order to achieve the above object, the invention according to claim 1 is such that an outer cylinder having a cam groove formed along a generatrix of an inner peripheral surface thereof and a rotatable outer cylinder. Mating,
A plurality of partition plates stacked in the direction of the central axis are provided with a gap, and an inner cylinder having a keyhole penetrated along the central axis and an outer circumference of the inner cylinder extending along the generatrix of the inner cylinder. Has a locking bar that is movably guided in a radial direction in the portion, and has an outer edge that engages with the cam groove and is urged in an outwardly projecting direction. An annular rotary disk tumbler with a key insertion hole of a size that can enclose the key hole is inserted in the part, and one of its substantial parts can be swung on a spindle that penetrates the inner cylinder in the axial direction. While supporting the shaft, an unlocking notch is formed on the outer edge of the free end, and on the other hand, at the opening edge of the key insertion hole, the locus of movement of the tip is the flat part or edge of the blade of the duplicate key inserted into the key hole. Engagement protrusions that interfere with the This engaging projection is urged in the direction close to the duplication key, and is normally locked to a backup pin that penetrates the inner cylinder in the axial direction, while each of the engaging projections of these tumbler groups is inserted into the keyhole. Float at least one partition plate in which the unlocking notch of each rotary disc tumbler is aligned with the inner edge of the locking bar when engaged with the corresponding recess formed in the blade of the inserted duplicate key. Designated as a partition plate, a key insertion opening with a size that can enclose the keyhole is formed in the center of the partition, similar to the rotary disk tumbler, and the movement locus of the tip is located at the opening edge of this key insertion opening. An engaging projection that interferes with the flat surface of the duplicate key blade inserted in the hole is integrally projected, and on the other hand, the floating partition plate can be swung around the support shaft, and due to the deviation of the center of gravity. Raw The floating partition is shaped so as to be urged in one direction by the rotating moment, and the free edge of the floating partition is formed with a relief notch into which the inner edge of the locking bar can enter, and the lock key is the keyhole. When the engaging projection is brought into contact with the flat surface of the blade of the duplication key, the relief notch is aligned with the inner edge of the locking bar.

According to the second aspect of the invention, the outer cylinder having the cam groove formed along the generatrix of the inner peripheral surface and the outer cylinder are rotatably fitted in the outer cylinder and are spaced apart in the central axis direction. In addition to providing a plurality of laminated partition plates, the inner cylinder that penetrates the key hole along the central axis and the generatrix of the inner cylinder extends along the outer circumference of the inner cylinder to allow radial movement. A locking bar that is guided and has an outer edge that engages with the cam groove is biased in an outwardly projecting direction, and each slot between the partition plates may surround a key hole in the central portion. An annular rotary disc tumbler with a key insertion hole of a size is inserted, and one part of its substantial part is swingably supported by a support shaft that penetrates the inner cylinder in the axial direction, and the free end part is also supported. An unlocking notch is formed on the outer edge, while the movement track of the tip is attached to the opening edge of the key insertion hole. Is integrally provided with an engaging projection that interferes with the flat surface portion or the end edge portion of the blade of the duplicating key inserted in the key hole, and urges each rotary disc tumbler in the direction in which the engaging projection approaches the duplicating key. , Normally, the inner cylinder is locked to a backup pin that penetrates in the axial direction, while
The unlocking notch of each rotary disc tumbler aligns with the inner edge of the locking bar when each of the engaging protrusions of these tumblers engages with the corresponding recess formed in the blade of the keypad that is inserted through the keyhole. In such a case, at least one partition plate is designated as a floating partition plate, and a key insertion opening having a size capable of enclosing a key hole is formed in the central portion thereof similarly to the rotary disc tumbler,
At the opening edge of the key insertion opening, an engaging projection is integrally formed so that the locus of movement of the tip interferes with the flat surface of the blade of the compound key inserted in the key hole, while the floating partition plate supports the shaft. It is formed so that it can be swung around, while the spring elastic force urges the floating partition plate in one direction, while the relief notch allows the inner edge of the locking bar to enter the outer edge of the free end of the floating partition plate. And the escape notch is aligned with the inner edge of the locking bar when the duplication key is inserted into the key hole and the engagement projection abuts the flat portion of the blade of the duplication key.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 2, reference numeral 12 indicates an outer cylinder of the rotary disk tumbler lock, and reference numeral 13 indicates an inner cylinder. The structures of the outer cylinder and the inner cylinders 12 and 13 are the same as those of the conventional lever tumbler lock. Briefly explained.

The inner cylinder 13 integrally connects a plurality of partition plates 14 and 14 with a pair of retainers 15, and the rotary disk tumbler 2 is inserted into a slot 10 formed between the partition plates.
Is inserted.

The retainer 15 is, as shown in FIG.
A plate-shaped member obtained by cutting out a part of a cylinder along a generatrix, forming a flange 16 at one end (outer end), and arranging a plurality of vertically long mounting holes 17, 17 along the generatrix. There is.

On the other hand, the partition plate 14 is, as shown in FIG.
The plate member is generally circular in shape, and the key hole 5 is formed in the central portion, the support shaft hole 19 is formed in the upper portion thereof, and the backup pin hole 21 is formed in the lower portion thereof, and mounting pieces 18, 18 are formed on both sides.

Then, the inner cylinder 13 is constructed by fitting the mounting piece 18 into the mounting hole 17 of the retainer 15.
In FIG. 4, reference numeral 22 indicates a guide notch into which the locking bar 11 (see FIG. 1) enters when the inner cylinder rotates.

In the present invention, the partition plate 1 described above is used.
At least one of the four and 14 is designated as the floating partition plate 23.

As shown in FIG. 2 and like the rotary disk tumbler 2, a key insertion opening 24 having a size capable of enclosing the key hole 5 is formed in the center of the floating partition plate 23.

An engaging projection 25 is integrally formed on the opening edge of the key insertion opening 24 so that the locus of movement of the tip interferes with the flat surface of the blade of the compound key inserted in the key hole 5. There is.

On the other hand, in order that the floating partition plate 23 can swing around the support shaft 3, its outer peripheral portion is cut out so as not to interfere with the retainer 15, and a large amount of meat on the left side portion in FIG. 2 is stolen. So that the center of gravity is located on the right side of the spindle 3,
That is, the outer shape of the floating partition plate 23 is set so that the floating partition plate 23 is biased in the clockwise direction by the rotation moment generated by the deviation of the center of gravity.

Of course, the shape of the floating partition plate 23 is not limited to that shown in the figure, and can be set arbitrarily.

In the illustrated embodiment, the floating partition plate 23
By leaving a portion corresponding to the mounting piece 18 and inserting this portion into the mounting hole 17 of the retainer 15, the floating partition plate 23 is constrained so as not to move in the axial direction of the inner cylinder.

On the other hand, a relief notch 26 is formed on the outer edge of the free end of the floating partition plate 23, and the size of the relief notch 26 is set so that the inner edge of the locking bar 11 can enter.

Further, as shown in FIG. 5, the formation position of the engaging projection 25 and the amount of projection into the key insertion opening 24 are as shown in FIG. 5, the flat surface portion 61 of the blade of the compound key 6 inserted in the key hole 5 (see FIG. 6), the relief notch 26 of the floating partition plate is set to be aligned with the inner edge of the locking bar 11.

When the duplicate key is not inserted into the key hole, the escape notch 26 of the floating partition plate 23 is not aligned with the inner edge of the locking bar 11 due to the rotation moment acting on the floating partition plate 23, as shown in FIG. Take an angular position.

In the partition plate mechanism according to the embodiment of the invention according to claim 1 configured as described above, the flat surface portion 61 of the blade of the duplicate key is inserted every time the locking key is inserted into the key hole during the locking / unlocking operation.
(No recess is formed in the flat portion of the blade corresponding to the partition plate) and the engaging projection 26 of the floating partition plate come into contact with each other, so that the floating partition plate 23 is engaged by these engagements.
Takes the angular position shown in FIG.

At this time, since the unlocking notches 4 and 4 of the other rotary disk tumblers 2 and 2 are aligned with the inner edge of the locking bar 11, when the inner cylinder is rotated, the locking bar 11 and the cam groove are rotated. The locking bar 11 enters the unlocking notches 4 and 4 or the escape notch 26 by a wedge action generated between the inner cylinder 13 and the locking bar 11. That is, the rotary disc tumbler lock is unlocked.

However, during the illegal unlocking operation by so-called picking, since the blade of the duplicate key is not inserted, the floating partition plate 23 assumes the angular position shown in FIG.

Therefore, even if the other rotary disk tumblers 2 are aligned at the unlocking angular position (see FIG. 1) by the picking operation, as is apparent from FIG. 2, the substantial portions on both sides of the escape notch 26 are locking bars 11. The rotary disc tumbler lock cannot be unlocked because the movement of the inner cylinder in the central axis direction is blocked.

In order to complete the picking, the floating partition plate 23 must be manipulated by a picking tool to align its relief notch 26 with the inner edge of the locking bar 11.

That is, according to the present invention, in the conventional rotary disc tumbler lock, the partition plate for forming the slot for accommodating the tumbler is provided with a function similar to that of a normal tumbler for the picking operation. Of.

As shown in FIG. 2, if inclined end edges 28, 28 are formed on both sides of the relief notch 26, when the inner cylinder is rotated with other rotary disk tumblers aligned, the locking bar 11 is It falls into the restraining notch 29 continuous with the inclined end edge 28, and further rotation of the inner cylinder becomes impossible.

According to a second aspect of the present invention, at least one partition plate has a notch (not shown) around the partition plate so as not to interfere with the retainer, and a plate similar to the rotary disk tumbler 2 is provided in the vicinity of the support shaft. The spring 31 is elastically mounted to urge the floating partition plate 23, and the structure and operation and effect thereof are the same as those described in the above-mentioned claim 1, and therefore detailed description thereof will be omitted.

The urging direction of the floating partition plate 23 may be either clockwise or counterclockwise in the figures in both the invention according to claim 1 and the invention according to claim 2.

[0031]

As is apparent from the above description, in the invention described in claims 1 and 2, at least one partition plate is designated as a floating partition plate, and the partition plate is swung around the support shaft. Since it is possible to support it, a relief notch is formed on the outer edge of its free end, and this relief notch is aligned with the inner edge of the locking bar only when the duplicate key is inserted.
With respect to picking, the floating partition plate has a function similar to that of a tumbler, and thus it is possible to make picking of a rotary disk tumbler lock extremely difficult and improve safety as a lock.

[Brief description of drawings]

FIG. 1 is a cross-sectional view for explaining the structure of a rotary disc tumbler lock.

FIG. 2 is a front view showing a partition plate mechanism according to the first aspect of the invention, showing a normal state in which a duplicate key is not inserted.

FIG. 3 is an external perspective view of a retainer.

FIG. 4 is a front view of a partition plate.

5 is a front view of the partition plate mechanism similar to FIG. 2, showing a state in which a duplicate key is inserted.

FIG. 6 is a plan view of a duplicate key.

[Explanation of symbols]

1 key insertion hole 2 Rotary disc tumbler 3 spindles 4 unlock notch 5 keyhole 6 duplicate key 7 Engagement protrusion 8 backup pins 9 depressions 11 Rocking bar 12 outer cylinder 13 Inner cylinder 14 partition boards 23 Floating partition 24 key insertion opening 25 Engagement protrusion 26 escape notch 27 Cam groove 28 leaf spring

Claims (2)

[Claims] 1. An outer cylinder having a cam groove formed along a generatrix of an inner peripheral surface, and a plurality of partition plates rotatably fitted to the outer cylinder and laminated in the central axis direction with a gap therebetween. With
An inner cylinder having a key hole penetrating along the central axis, and extending along a generatrix of the inner cylinder, being guided movably in a radial direction at an outer peripheral portion of the inner cylinder and engaging with the cam groove. And a locking bar urged in a direction in which the outer edge of the partition plate protrudes outward, and in each slot between the partition plates, a key insertion hole of a size capable of enclosing the key hole is formed in the central portion. A rotary disc tumbler is inserted, one part of its substantial part is swingably supported on a support shaft that penetrates the inner cylinder in the axial direction, and an unlocking notch is formed on the outer end edge of the free end. On the other hand, at the opening edge of the key insertion hole, an engaging projection whose movement locus of the tip interferes with the flat portion or the edge portion of the blade of the duplication key inserted in the key hole is integrally projected, and each rotary disc tumbler is attached. This engaging projection urges the key closer to the key, and the Of the tumbler group on the other hand, while each of the engaging protrusions of these tumbler groups engages with the corresponding recess formed on the blade of the key combination inserted in the key hole, With the unlocking notch of the disc tumbler aligned with the inner edge of the locking bar, at least one partition plate is designated as a floating partition plate, and a key hole is provided in the center of it as in the rotary disc tumbler. A key insertion opening having a size that can be surrounded is formed, and an engagement projection portion whose movement locus of the tip interferes with the flat surface portion of the blade of the duplication key inserted into the key hole is integrally formed at the opening edge of the key insertion opening. On the other hand, it is formed so that this floating partition plate can be swung around the support shaft, and that the floating partition plate is biased in one direction by the rotational moment generated by the deviation of its center of gravity. In addition, the free edge of the floating partition plate has an escape notch into which the inner edge of the locking bar can enter, and the duplicate key is inserted into the key hole, and the engaging projection abuts the flat portion of the blade of the duplicate key. The floating partition mechanism of the rotary disc tumbler lock, wherein the escape notch is aligned with the inner edge of the locking bar when the above is done. 2. An outer cylinder having a cam groove formed along a generatrix of an inner peripheral surface, and a plurality of partition plates which are rotatably fitted to the outer cylinder and are laminated in the central axis direction with a gap therebetween. With
An inner cylinder having a key hole penetrating along the central axis, and extending along a generatrix of the inner cylinder, being guided movably in a radial direction at an outer peripheral portion of the inner cylinder and engaging with the cam groove. And a locking bar urged in a direction in which the outer edge of the partition plate protrudes outward, and in each slot between the partition plates, a key insertion hole of a size capable of enclosing the key hole is formed in the central portion. A rotary disc tumbler is inserted, one part of its substantial part is swingably supported on a support shaft that penetrates the inner cylinder in the axial direction, and an unlocking notch is formed on the outer end edge of the free end. On the other hand, at the opening edge of the key insertion hole, an engaging projection whose movement locus of the tip interferes with the flat portion or the edge portion of the blade of the duplication key inserted in the key hole is integrally projected, and each rotary disc tumbler is attached. This engaging projection urges the key closer to the key, and the Of the tumbler group on the other hand, while each of the engaging protrusions of these tumbler groups engages with the corresponding recess formed on the blade of the key combination inserted in the key hole, With the unlocking notch of the disc tumbler aligned with the inner edge of the locking bar, at least one partition plate is designated as a floating partition plate, and a key hole is provided in the center of it as in the rotary disk tumbler. A key insertion opening having a size that can be surrounded is formed, and an engagement projection portion whose movement locus of the tip interferes with the flat surface portion of the blade of the duplication key inserted into the key hole is integrally formed at the opening edge of the key insertion opening. On the one hand, the floating partition plate is formed so that it can be swung around the support shaft, and the elastic force of the spring urges the floating partition plate in one direction, while on the other hand, the outer edge of the free end of the floating partition plate. In lock The inner edge of the locking bar forms an escape notch that can be entered, and when the duplication key is inserted into the key hole and the engagement protrusion abuts the flat portion of the blade of the duplication key, the relief notch aligns with the inner edge of the locking bar. The floating partition plate mechanism of the rotary disk tumbler lock characterized in that