JP4108315B2 - Rotary partition mechanism for rotary disc tumbler lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floating partition plate mechanism (hereinafter simply referred to as a partition plate mechanism) in a novel rotary disk tumbler lock previously proposed by the present applicant, and in particular, makes it difficult to perform unauthorized unlocking called so-called picking. The present invention relates to a partition plate mechanism.
[0002]
[Prior art]
The present applicant has previously proposed a novel rotary disk tumbler lock improved from the so-called lever tumbler lock (rotary disk cylinder lock) according to Japanese Patent Application No. 2001-316885.
[0003]
The rotary disk tumbler lock includes an outer cylinder having a cam groove formed along a generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap. An inner cylinder having a key hole extending along the central axis, and extending along a generatrix of the inner cylinder, and guided in a radially movable manner on the outer periphery of the inner cylinder, and the cam A locking bar biased in a direction in which an outer edge engaged with the groove protrudes outward, and a key insertion hole of a size capable of enclosing the key hole in a central portion in each slot between the partition plates Insert the formed annular rotary disk tumbler and pivotally support one part of its substantial part on a support shaft that penetrates the inner cylinder in the axial direction and unlocks the notch on the outer edge of the free end. On the other hand, the movement trajectory of the tip is at the opening edge of the key insertion hole. Engagement protrusions that interfere with the flat part or edge part of the keyed blade inserted into the hole are integrally projected, and each rotary disk tumbler is urged in the direction in which the engagement protrusions are close to the keyed key, and in a normal state. Then, when the inner cylinder is locked to the backup pin penetrating in the axial direction, on the other hand, when each of the engaging projections of these tumbler groups is engaged with the corresponding recess formed in the keyed blade inserted through the key hole. The unlocking notch of each rotary disk tumbler is aligned with the inner edge of the locking bar.
[0004]
To further summarize the structure of the rotary disk tumbler lock described above, as shown in FIG. 1, an annular rotary disk tumbler 2 having a key insertion hole 1 of a size capable of enclosing the key hole at the center is provided on the support shaft 3. The unlocking notch 4 is formed on the outer end edge of the free end portion while being pivotably supported, and on the other hand, a joint key 6 in which the movement locus of the tip is inserted into the key hole 5 at the opening edge of the key insertion hole 1. Engaging projections 7 that interfere with the flat portion or the edge of the blade of the blade are integrally projected, and each rotary disk tumbler 2 is urged in the direction in which the engaging projections 7 approach the joint key 6 and is normally backed up. When each of the engaging protrusions of the tumbler group is engaged with the corresponding recess 9 formed in the blade of the key 6 inserted through the key hole 5, each of the rotary disk tumblers is locked. Unlock notch 4 It is intended to match with the inner edge of the king bar 11.
[0005]
[Problems to be solved by the invention]
The present invention is not intended to improve the novel rotary disk tumbler lock having the above-described configuration, but by adding a new floating partition mechanism to this, picking is made more difficult, and the rotary disk tumbler lock as a lock is improved. The purpose is to further improve safety.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that an outer cylinder in which a cam groove is formed along a generatrix of an inner peripheral surface, and is rotatably fitted to the outer cylinder and is centered through a gap. A plurality of partition plates stacked in the axial direction are provided, and an inner cylinder that penetrates the key hole along the central axis, and extends along the generatrix of the inner cylinder, and radially in the outer peripheral portion of the inner cylinder A locking bar which is guided so as to be movable, and whose outer edge engaged with the cam groove is biased in a direction protruding outward, and a key hole is formed in each slot between the partition plates in the center portion. An annular rotary disc tumbler having a key insertion hole of a size that can be surrounded is inserted, and one of its substantial parts is pivotally supported on a support shaft that penetrates the inner cylinder in the axial direction, An unlocking notch is formed on the outer edge of the free end, while the tip is on the opening edge of the key insertion hole. Engagement protrusions that interfere with the flat part or edge part of the key-locking blade inserted in the key hole are integrally projected, and each rotary disk tumbler is biased in the direction in which the engagement protrusion approaches the key. In addition, normally, the inner cylinder is locked to the backup pin penetrating in the axial direction, and on the other hand, each of the engagement protrusions of these tumbler groups has a corresponding recess formed in the keyed blade inserted into the key hole. When engaged, the unlocking notch of each rotary disk tumbler is aligned with the inner edge of the locking bar. At least one partition plate is designated as the floating partition plate, and the rotary disk tumbler is located at the center. Similarly, a key insertion opening having a size capable of enclosing the key hole is formed, and the movement locus of the tip of the key insertion blade inserted into the key hole is formed at the opening edge of the key insertion opening. Engagement protrusions that interfere with the surface part are integrally projected, while the floating partition plate can be swung around the support shaft, and the floating partition plate is unidirectional by the rotational moment generated by the deviation of its center of gravity. Is formed on the outer edge of the free end of the floating partition plate so that the inner edge of the locking bar can enter, the key is inserted into the key hole, and the engagement protrusion is the key. When the abutting against the flat part of the blade, the escape notch is aligned with the inner edge of the locking bar, and when the key is not inserted into the key hole, the floating partition plate is tilted by the biasing force, and the relief notch and the locking bar The angle position of the inner edge of the lens is shifted so that unauthorized unlocking by picking is prevented .
[0007]
According to the second aspect of the present invention, an outer cylinder in which a cam groove is formed along a generatrix of the inner peripheral surface, and the outer cylinder is rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap. A plurality of partition plates are provided, and an inner cylinder that penetrates the key hole along the central axis, and extends along a generatrix of the inner cylinder, and is guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder. And a locking bar urged in a direction in which an outer edge engaged with the cam groove protrudes outward, and each slot between the partition plates has a size that can surround the key hole in the center portion. An annular rotary disk tumbler with a key insertion hole is inserted, and one of its substantial parts is pivotally supported on a pivot that penetrates the inner cylinder in the axial direction, and the outer edge of the free end An unlocking notch is formed in the opening of the key insertion hole, while the movement trajectory of the tip is inserted into the key hole. Engagement projections that interfere with the flat portion or edge of the key lock blade are integrally projected, and each rotary disk tumbler is urged in the direction in which the engagement projection approaches the key lock, and in the normal state, the inner cylinder Each of the rotary projections of the tumbler group is engaged with a corresponding recess formed on the key blade inserted through the key hole. In the disc tumbler with the unlocking notch aligned with the inner edge of the locking bar, at least one partition plate is designated as an idler partition plate, and a key hole is formed in the center as in the rotary disc tumbler. A key insertion opening of a size that can be surrounded is formed, and at the opening edge of this key insertion opening, the movement trajectory of the tip interferes with the plane part of the keyed blade inserted into the key hole. On the other hand, the floating partition plate is formed so as to be able to swing around the support shaft, and the flexible partition plate is urged in one direction by the elasticity of the spring. A relief notch that allows the inner edge of the locking bar to enter is formed on the outer edge of the free end, and when the key is inserted into the key hole and the engaging protrusion abuts the flat part of the blade of the key, the relief notch is locked. When the key is not inserted into the key hole, the floating partition plate is tilted by the urging force so that the angular position of the escape notch and the inner edge of the locking bar is shifted. It is characterized by preventing unauthorized unlocking by.
[0008]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 2, reference numeral 12 denotes an outer cylinder of the rotary disk tumbler lock, and reference numeral 13 denotes an inner cylinder. Since the structure of the outer cylinder and the inner cylinders 12 and 13 is the same as that of the conventional lever tumbler lock, A simple explanation.
[0009]
The inner cylinder 13 is formed by connecting a plurality of partition plates 14 and 14 together by a pair of retainers 15 and inserting the rotary disk tumbler 2 in a slot 10 formed between the partition plates.
[0010]
As shown in FIG. 3, the retainer 15 is a plate-like member obtained by cutting a part of a cylinder along a generatrix, and forms a flange 16 at one end (outer end), and a plurality of members along the generatrix. The vertically long mounting holes 17 and 17 are arranged in a line.
[0011]
On the other hand, as shown in FIG. 4, the partition plate 14 is a plate material having a roughly circular shape, and has a key hole 5 at the center, a support shaft hole 19 above it, and a backup pin hole 21 below. The attachment pieces 18, 18 are formed on both sides.
[0012]
Then, the inner cylinder 13 is configured so that the mounting piece 18 is fitted into the mounting hole 17 of the retainer 15. In FIG. 4, reference numeral 22 denotes a guide notch into which the locking bar 11 (see FIG. 1) enters when the inner cylinder is rotated.
[0013]
In the present invention, at least one of the above-described partition plates 14, 14 is designated as the floating partition plate 23.
[0014]
As shown in FIG. 2 and in the same manner as the rotary disc tumbler 2, a key insertion opening 24 having a size capable of enclosing the key hole 5 is formed at the center of the floating partition plate 23.
[0015]
Further, an engaging protrusion 25 is integrally projected from the opening edge of the key insertion opening 24 so that the movement trajectory of the tip interferes with the flat portion of the keying blade inserted into the key hole 5.
[0016]
On the other hand, the outer peripheral portion of the floating partition plate 23 is cut out so as not to interfere with the retainer 15 so as to be able to swing around the support shaft 3, and the left side portion in FIG. Is positioned on the right side of the support shaft 3, that is, so that the floating partition plate 23 is urged clockwise by the rotational moment generated by the deviation of the center of gravity.
[0017]
Of course, the shape of the floating partition plate 23 is not limited to that shown in the figure, and can be arbitrarily set.
[0018]
In the illustrated embodiment, a portion corresponding to the mounting piece 18 of the floating partition plate 23 is left a little, and this portion is inserted into the mounting hole 17 of the retainer 15 so that the floating partition plate 23 is aligned in the inner cylinder axis direction. It is restrained not to move.
[0019]
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.
[0020]
Further, the formation position of the engagement protrusion 25 and the amount of protrusion into the key insertion opening 24 are as follows. As shown in FIG. 5, the flat surface portion 61 of the blade of the key 6 inserted into the key hole 5 (see FIG. 6). The clearance notch 26 of the floating partition plate is set so as to align with the inner edge of the locking bar 11.
[0021]
In the state where the key is not inserted into the key hole, the floating partition plate 23 has an angular position where the escape notch 26 does not align with the inner edge of the locking bar 11 due to the rotational moment acting on the floating partition plate 23 as shown in FIG. Take.
[0022]
The partition plate mechanism according to an embodiment of the invention according to claim 1 configured as described above is configured so that the locking blade unlocks the plane portion 61 (on the partition plate) of the key lock blade every time the key lock is inserted into the key hole. 5 is not formed in the corresponding portion of the flat portion of the blade) and the engagement projection 26 of the floating partition plate, and the engagement partition plate 23 is angled as shown in FIG. Take position.
[0023]
At this time, the unlocking cutouts 4 and 4 of the other rotary disc tumblers 2 and 2 are also aligned with the inner edge of the locking bar 11, so that when the inner cylinder is rotated, the locking bar 11 and the cam groove 27 The locking bar 11 enters the unlocking cutouts 4 and 4 or the escape cutouts 26 by the wedge action generated therebetween, so that the inner cylinder 13 can be rotated. That is, the rotary disc tumbler lock is unlocked.
[0024]
However, during the unauthorized unlocking operation by so-called picking, the key blade is not inserted, so the floating partition plate 23 takes the angular position shown in FIG.
[0025]
Therefore, even if the other rotary disc tumblers 2 are aligned at the unlocking angle position (see FIG. 1) by picking operation, as is apparent from FIG. The rotary disk tumbler lock cannot be unlocked because it prevents movement in the direction of the central axis.
[0026]
In order to complete the picking, the floating partition plate 23 must be operated with a picking tool to align the relief notch 26 with the inner edge of the locking bar 11.
[0027]
In other words, in the present invention, in the conventional rotary disk tumbler lock, the partition plate for forming the slot for storing the tumbler is given the same function as a normal tumbler for picking operation.
[0028]
As shown in FIG. 2, if the inclined end edges 28, 28 are formed on both sides of the relief notch 26, when the inner cylinder is rotated with another rotary disc tumbler aligned, the locking bar 11 is inclined. Then, it falls into the constraining notch 29 connected to 28, and further rotation of the inner cylinder becomes impossible.
[0029]
According to the second aspect of the present invention, a notch (not shown) is provided around at least one partition plate so as not to interfere with the retainer, and a leaf spring 31 is provided in the vicinity of the support shaft in the same manner as the rotary disc tumbler 2. Since the floating partition plate 23 is energized and urged, and its structure and operational effects are the same as those described in the first aspect, further detailed description is omitted.
[0030]
The urging direction of the floating partition plate 23 may be either clockwise or counterclockwise in the figure in both the invention according to claim 1 and the invention according to claim 2.
[0031]
【The invention's effect】
As is apparent from the above description, in the first and second aspects of the invention, at least one partition plate is designated as the floating partition plate, and this is supported so as to be swingable around the support shaft. Since the escape notch is formed on the outer edge of the free end, and this escape notch is aligned with the inner edge of the locking bar only when the key is inserted, the floating partition plate is used as a tumbler for picking. The same function is provided, and it is possible to remarkably make the picking of the rotary disc tumbler lock and improve the safety as a lock.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining a configuration of a rotary disc tumbler lock.
FIG. 2 is a front view showing a partition plate mechanism according to the first aspect of the present invention, and shows a normal state in which a key is not inserted.
FIG. 3 is an external perspective view of a retainer.
FIG. 4 is a front view of a partition plate.
FIG. 5 is a front view of the same partition plate mechanism as in FIG. 2 and shows a state in which a key is inserted.
FIG. 6 is a plan view of a joint key.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Key insertion hole 2 Rotary disk tumbler 3 Spindle 4 Unlocking notch 5 Key hole 6 Key 7 Engagement protrusion 8 Backup pin 9 Recess 11 Locking bar 12 Outer cylinder 13 Inner cylinder 14 Partition plate 23 Free partition plate 24 Key insertion opening 25 Engaging protrusion 26 Escape notch 27 Cam groove 28 Leaf spring

Claims (2)

An outer cylinder formed with a cam groove along the generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap are provided. And an outer edge that extends along the generatrix of the inner cylinder and is guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder and engages with the cam groove An annular rotary disk tumbler having a locking bar biased in the outward projecting direction and having a slot for inserting a key hole in the center of each slot between the partition plates. Is inserted, and one portion of the substantial part is pivotally supported on a support shaft penetrating the inner cylinder in the axial direction, and an unlocking notch is formed on the outer edge of the free end, The flat part of the blade of the key that the movement trajectory of the tip is inserted into the key hole at the opening edge of the insertion hole Is a backup pin that integrally protrudes an engaging projection that interferes with the edge, and urges each rotary disk tumbler in a direction in which the engaging projection approaches the key, and normally penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. At least one partition plate is designated as an idler partition plate in alignment with the inner edge of the bar, and a key insertion of a size capable of enclosing the key hole is provided at the center, similar to a rotary disc tumbler. An opening is formed, and at the opening edge of the key insertion opening, an engagement protrusion is formed integrally to project the movement locus of the tip to interfere with the flat portion of the key blade inserted into the key hole. The floating partition plate is formed so that it can be swung around the spindle and the floating partition plate is urged in one direction by the rotational moment generated by the deviation of its center of gravity. A relief notch that allows the inner edge of the locking bar to enter is formed on the outer edge, and when the key is inserted into the key hole and the engaging protrusion abuts the flat part of the blade of the key, the relief notch is inside the locking bar. When the key is not inserted into the key hole, the floating partition plate is tilted by the urging force so that the angular position of the escape notch and the inner edge of the locking bar is shifted, so that incorrect answers due to picking can be obtained. A rotary disk tumbler lock floating partition mechanism characterized by blocking the lock. An outer cylinder formed with a cam groove along the generatrix of the inner peripheral surface, and a plurality of partition plates that are rotatably fitted to the outer cylinder and stacked in the central axis direction through a gap are provided. And an outer edge that extends along the generatrix of the inner cylinder and is guided so as to be movable in the radial direction at the outer peripheral portion of the inner cylinder and engages with the cam groove An annular rotary disk tumbler having a locking bar biased in the outward projecting direction and having a slot for inserting a key hole in the center of each slot between the partition plates. Is inserted, and one portion of the substantial part is pivotally supported on a support shaft penetrating the inner cylinder in the axial direction, and an unlocking notch is formed on the outer edge of the free end, The flat part of the blade of the key that the movement trajectory of the tip is inserted into the key hole at the opening edge of the insertion hole Is a backup pin that integrally protrudes an engaging projection that interferes with the edge, and urges each rotary disk tumbler in a direction in which the engaging projection approaches the key, and normally penetrates the inner cylinder in the axial direction. On the other hand, when each of the engaging protrusions of these tumbler groups engages with a corresponding recess formed in the keying blade inserted through the key hole, the unlocking notch of each rotary disk tumbler is locked. At least one partition plate is designated as an idler partition plate in alignment with the inner edge of the bar, and a key insertion of a size capable of enclosing the key hole is provided at the center, similar to a rotary disc tumbler. An opening is formed, and at the opening edge of the key insertion opening, an engagement protrusion is formed integrally to project the movement locus of the tip to interfere with the flat portion of the key blade inserted into the key hole. The movable partition plate is shaped so that it can swing around the support shaft, and the floating partition plate is urged in one direction by the elasticity of the spring, while the inner edge of the locking bar is located on the outer edge of the free partition plate. Forming an escape notch that can be entered, and when the key is inserted into the key hole and the engaging protrusion abuts against the flat part of the blade of the key, the escape notch is aligned with the inner edge of the locking bar ; When the key is not inserted into the keyhole, the floating partition plate is tilted by the urging force so that the angular position of the escape notch and the inner edge of the locking bar is shifted, thereby preventing unauthorized unlocking by picking. A floating partition plate mechanism for rotary disc tumbler locks.

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