JP2003201782A - Rotary disk tumbler lock with construction key device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To release a construction key device by means of a duplicate key in a rotary disk tumbler lock with the construction key device. <P>SOLUTION: At least one selected tumbler is designated as a nonoperating tumbler; and locking protrusions are formed in the nonoperating tumblers and engaged with backup pins 81 so as to be put into a nonoperating state. The backup pin 81 is locked by an operating plate 24 movable in the radial direction of an inner cylinder; when a reset tumbler 28, which is arranged in such a manner as to overlap the operating plate 24, is turned by the duplicate key CK2, an unlocking notch 4 is disengaged from a locking bar 11; and the operating plate 24 is moved via a reset protrusion 17d and the reset tumbler 28 by virtue of the movement of the locking bar 11 along with the turning of the inner cylinder, so that the backup pin 81 can be released. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary disk tumbler lock with a construction key device (hereinafter simply referred to as a cons lock), and more particularly to a cons lock that can be unlocked with a duplicate key.

[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.

On the other hand, the construction key device is
During construction, a special key called a construction key is used to lock and unlock the locks on each dwelling unit, and after the construction is completed, the construction key device will be unlocked, and the construction key will become unusable. It is a device that can be used only with the key to be used (dwelling unit key), in order to rationalize the lock / unlock work and key management work of the builder during construction, and to further secure the safety of the owner or resident. It was devised in.

It should be noted that the term "key" means not a so-called spare key (spare key) but a key having a regular key shape for unlocking one lock.

[0007]

The applicant of the present invention has previously proposed, in Japanese Patent Application No. 6-126966, that a construction key device can be released with a dwelling unit key without requiring a special tool to release the construction key device. Proposed a lever tumbler lock.

The invention is based on the above-mentioned Japanese Patent Application No. 6-126966.
No. 1 proposes a cons lock in which the technical idea of No. 1 is applied to the rotary disc tumbler lock according to Japanese Patent Application No. 2001-316885, and further improves the function of the construction key device, and a first construction key device used during construction, An object of the present invention is to provide a cons lock that can be switched to the second construction key device for management used by the landlord after completion.

[0009]

In order to achieve the above object, the invention according to claim 1 designates at least one tumbler of a rotary disk tumbler lock as a quiescent tumbler, and the inside of the free end of the quiescent tumbler is designated. By forming a locking projection on the edge and engaging this locking projection with a backup pin when the construction key device is activated, the rest tumbler is placed in the inactive state, and thus the blade ahead of the part facing the rest tumbler It is possible to use a construction key that has a side edge that is cut out to make it thinner or shortened.On the other hand, a backup pin that is cut out near the part that engages with the rest tumbler when the construction key device is activated Direction, and the cutout part is aligned with the rest tumbler. On the other hand, when the construction key device is actuated, on the other hand, there is provided an actuation plate which engages with the backup pin and locks it at the construction key device actuation position so as to be movable in the radial direction of the inner cylinder, and overlaps with this actuation plate The reset tumbler, which is arranged so as to be movable in the radial direction of the inner cylinder, has an unlocking notch formed on the outer edge of the free end of the reset tumbler, which aligns with the locking bar when the construction key is inserted into the keyhole. When using a construction key, resetting the locking bar Allows engagement of the tumbler in the notch, holds the operating plate in the backup pin locking position, and operates the dwelling unit key that secures the blade flat surface facing the engaging protrusion of the reset tumbler, The operating plate is moved by the locking bar through the reset tumbler and the locking part between the reset tumbler and the operating plate. And to release the backup pin Solve engagement of backup pins by actuating plate, have been in alignment with the notch portion of the backup pin and resting tumbler, characterized in that so as to release the construction key device.

Further, in the invention according to claim 2, at least one tumbler of the rotary disk tumbler lock is designated as the first rest tumbler, and at least one tumbler adjacent to the first rest tumbler is located inside the first rest tumbler.
One tumbler is designated as the second rest tumbler, and a locking protrusion is formed on the inner edge of the free end of these first and second rest tumblers, and when the construction key device operates, this locking protrusion serves as a backup pin. By engaging the resting tumbler in the inoperative state, the side edge of the blade ahead of the part facing the resting tumbler is cut out to be thin, or it is possible to use the shortened first construction key, while, When the construction key device is activated, the backup pin, which is cut out near the portion that engages with the rest tumbler, is divided into a first backup pin that engages with the first rest tumbler and a second backup pin that engages with the second rest tumbler. Then, each is guided so as to be movable in the axial direction by a certain distance, and the first backup pin is Biased in a direction in which missing portions is aligned with resting tumbler, while the first working plate for locking it engages the construction key device operates when the first backup pins to the construction key device actuated position,
A second operating plate that locks the second backup pin at the operating position of the construction key device is provided movably in the radial direction of the inner cylinder, and is arranged so as to overlap with each of these operating plates. Guided to move in the first direction
And, on the outer edge of the free end of the second reset tumbler, an unlocking notch is formed which aligns with the locking bar when the construction key is inserted into the key hole, so that when the first construction key is used, the lock bar has a reset tumbler notch. While holding the operating plate in the backup pin locking position while ensuring the flat surface of the blade facing the engaging protrusion of the first reset tumbler, and the blade of the blade ahead of the portion facing the second rest tumbler. When the second construction key whose side edge is cut out to be thin or short is operated, the first reset tumbler and the first actuating plate by the locking bar via the engaging portion between the first reset tumbler and the first actuating plate. To release the first backup pin by releasing the locking of the first backup pin by the first operating plate, and The first of the dwelling unit keys in which the cutout portion of the 1 backup pin and the first rest tumbler are aligned to enable the use of the second construction key, and the blade flat surface facing the engaging protrusion of the second reset tumbler is secured. Second reset tumbler and second when using
The second operating plate is moved by the locking bar via the engaging portion between the reset tumbler and the second operating plate, the second backup pin is unlocked by the second operating plate, and the second backup is performed via the one backup pin. Release the pin,
Thus, the notch of the second backup pin and the second rest tumbler are aligned with each other, and the construction key device is released.

Still further, in the invention according to claim 3, at least one tumbler of the rotary disc tumbler lock is designated as the first rest tumbler, and at least one adjacent to the first rest tumbler inward of the first rest tumbler is designated. One tumbler is designated as the second rest tumbler, and a locking protrusion is formed on the inner edge of the free end of these first and second rest tumblers, and when the construction key device operates, this locking protrusion serves as a backup pin. By engaging the resting tumbler in the inoperative state, the side edge of the blade ahead of the part facing the resting tumbler is cut out to be thin, or it is possible to use the shortened first construction key, while, When the construction key device is activated, a bar notched near the part that engages with the rest tumbler is used. The first and second locking notches are formed on the side of the pull-up pin that faces the central axis of the inner cylinder along the lengthwise direction, and the backup pin is movably guided inward and attached to the inner side. And a first actuating plate which engages with the first locking notch when operating the construction key device and locks it in the construction key device operating position, and the first engaging notch and the first actuating plate. Is disengaged and the backup pin is further moved inward, the second locking notch and the second actuating plate engaging with the second actuating plate are provided movably in the radial direction of the inner cylinder, and the actuating plates are overlapped with each other. And the unlocking bar that aligns with the locking bar when the construction key is inserted into the key hole at the outer edge of the free ends of the first and second reset tumblers that are arranged so as to be movable in the radial direction of the inner cylinder. Forming a notch 1 When using the construction key, the locking plate is allowed to engage in the notch of the reset tumbler to hold the operating plate in the backup pin locking position, while securing the flat surface of the blade facing the engaging protrusion of the first reset tumbler. When operating the second construction key in which the side edge of the blade ahead of the portion facing the second rest tumbler is cut out to be thin or short, the first reset tumbler and the first reset tumbler and the first operating plate The first operating plate is moved by the locking bar via the locking portion, and the backup pin is released by releasing the locking of the backup pin by the first operating plate, whereby the cutout portion of the backup pin and the first rest tumbler are separated. Alignment allows the use of the second construction key and also the engagement protrusion of the second reset tumbler. At the time of first use of the dwelling unit key that secures the flat surface of the blade facing the start, the second operating plate is moved by the locking bar via the second reset tumbler and the engaging portion between the second reset tumbler and the second operating plate, It is characterized in that the locking of the backup pin by the two actuating plates is released, the cutout portion of the second backup pin and the second rest tumbler are aligned with each other, and the construction key device is released.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The cons tablet according to the present invention is the above-mentioned Japanese Patent Application No. 2001.
This is a rotary disk tumbler lock proposed by -316885 and incorporated with a construction key device described later.

However, the major difference between the rotary disk tumbler lock whose structure has been briefly described above and the conventional lever tumbler lock is that the shape of the tumbler is annular, and the key groove on the side edge of the blade. Instead of the above, there are two points in which a recess is formed in the flat surface portion and the end edge portion of the duplicate key, and therefore, a more detailed description of the rotary disc tumbler lock will be omitted.

Further, for convenience of description, only the cons lock having a more complicated structure will be described as an embodiment. This is because the description of the cons lock described in claim 1 is included in the description of claim 2.

In FIGS. 2 and 3, reference numeral 12 is an outer cylinder integrally formed with a protrusion 13 for preventing rotation, and a cam groove 14 is formed inside the protrusion 13.

Inside the inner hole of the outer cylinder 12, reference numeral 1 is used as a whole.
The inner cylinder indicated by 4 is rotatably fitted. This inner cylinder 14
As shown in FIG. 3, a plurality of partition plates 17, 17 are provided between the key guide 15 having a plate with a flange exposed on the outer surface side of the door and the tail plug 16, and the inner cylinder axis line with a gap therebetween. Are stacked in the direction. In the illustrated embodiment, first to tenth partition plates 17-1 to 17-10 are provided.

Each partition plate 17 is, for example, as shown in FIG. 2, a plate-shaped body having a substantially circular shape as a whole, and arcuate insertion pieces 17a, 17a are integrally formed on both left and right sides in FIG. A key hole 5 having a complicated shape as shown in the figure and a hexagonal backup pin insertion hole 17b in which a trapezoid and a rectangle are combined are opened in the central portion.

In the illustrated embodiment, the keyhole 5 has a complicated cross-sectional shape as shown in the drawing, in addition to the purpose of increasing the number of types of so-called wards and increasing the number of key differences, a picking tool in the keyhole 5 is provided. This is because the operation of is difficult.

Further, the cross-sectional shape of the keyhole 5 (the duplicate key 6) is made point-symmetrical with respect to the central axis of the inner cylinder 14 in order to make a so-called reversible key into which the duplicate key can be inserted into the keyhole 5 regardless of the front and back of the duplicate key. Is.

As shown in FIG. 2, the outer peripheral portion of the keyhole 5 on the opposite side of the support shaft 3 is notched in a convex shape as shown in the drawing so that the locking bar 11 can be moved in the radial direction of the inner cylinder. A guide groove 17c for guiding is formed.

For example, the ten partition plates 17-1 to 17-10, the operation plate, which will be described later, the key guide 15 and the tail plug 16 configured as described above, are the retainers 18 and 1 shown in FIG.
8 are integrally connected to each other via 8 to form an inner cylinder 14.

The retainer 18 is a curved plate-like member (not shown) in which a part of the cylinder is cut out along the generatrix with a constant width, and the partition plate is provided along the length direction thereof. 17
Rectangular openings that fit with the insertion pieces 17a of the partition plate 17 are formed in a row.
Although they are coupled to each other via 17, their structure is already well known, and therefore a detailed description thereof will be omitted.

The slot formed between one partition plate 17 of the inner cylinder 14 constructed as described above and another adjacent partition plate 17 has a center as shown in FIGS. 1 and 2. An annular rotary disc tumbler 2 having a key insertion hole 1 having a size capable of surrounding the key hole 5 is inserted in the portion.

The above is a typical constitution of the rotary disc tumbler lock, and the operation thereof is as described above. Therefore, the cons lock according to the present invention is the rotary disc described above. A part of the tumbler lock is modified and a construction key device is incorporated.

That is, in the cons lock shown in FIG. 3, at least one tumbler among the plurality of rotary disc tumblers is used as the first resting tumbler 21.
Further, at least one tumbler that is adjacent to and inside the first rest tumbler 21 is designated as the second rest tumbler 22.

In the embodiment shown in FIG. 3, the fourth tumbler viewed from the opening outside the keyhole 5 is the first resting tumbler 21, and the fifth to sixth tumblers are the same. It is designated as the second rest tumbler 22-1 to 22-5.

The outer three tumblers 2 and 2 of the inner cylinder 14 are tumblers used during construction, and the fifth tumbler and the innermost tumbler are first and second reset tumblers described later, respectively. .

The first and second rest tumblers 21, 2
As shown in FIG. 2, 2 has a shape similar to that of a normal rotary disc tumbler 2, and an unlocking notch 4 is also formed on the outer edge of its free end portion. The only difference is that a locking projection 19 is formed on the inner edge of the free end thereof.

The positional relationship between the position where the locking projection 19 is formed and the unlocking notch 4 is the same for both the first and second rest tumblers 21 and 22.
As shown in FIG. 2, in the normal state where the duplicate key 6 is not inserted into the key hole 5, when the locking protrusion 19 abuts the backup pin 8 and is locked at that angular position, the unlocking notch 4
Are set to match the locking bar 11.

Further, as shown in FIG. 3, the backup pin is divided into a first backup pin 81 for controlling the first rest tumbler 21 and a second backup pin 82 for controlling the second rest tumbler 22. .

These first and second backup pins 8
The first backup pins 81 are urged inward (to the right in FIG. 3) by the elastic force of the reset spring 23 while being guided so as to be movable in the axial direction (longitudinal direction). ing.

On the other hand, the portion of the first or second backup pin 81 (82) near each of the pause tumblers 21, 22 is intermittently cut out corresponding to the pause tumblers 21, 22, and at least the pause tumbler 21, Notch portions 81a and 82a are formed in the same number as 22.

In the embodiment shown in FIG. 3, the number of the first rest tumblers 21 is one, and the number of the second rest tumblers 22 is five. Therefore, the cutout portion 81a of the first backup pin 81 is formed.
Is 1, and the second backup pin 82 has 5
Is.

The first and second backup pins 81,
The notch portions 81a and 82a of 82 are formed on the side surface portion facing the locking bar 11 and closer to the opening of the keyhole 5 than the corresponding rest tumblers 21 and 22.

Further, the cut depths of the cut-out portions 81a, 82a of the backup pins 81, 82 seen from the locking bar 11 are such that the cut-out portions 81a, 82a and the rest tumblers 21, 22 are aligned in the inner cylinder axial direction. At this time, the latter locking projection 19 is set so as to be able to slip through this cutout portion.

On the other hand, FIG. 3 shows a state in which the construction key device is operating, and in this state, the cutout portion 8
The first and second backup pins 81 and 8 are located at positions where the la and halves 1a and 82a are not aligned with the corresponding rest tumblers 21 and 22.
2 is locked.

In order to operate the construction key device by locking the backup pins 81 and 82 in the operating position, the fourth partition plate 17-4 from the left in FIG. 3 locks the first backup pin 81 in the operating position. First operating plate 24
As a second working plate 25, the tenth partition plate 17-10 at the innermost side of the inner cylinder locks the second backup pin 82 in the working position.
Is designated as.

As shown in FIG. 4, the shape structure of the operating plate 24 (25) is substantially the same as that of the other partition plate 17 (see FIG. 2). The first difference is that it is divided into approximately two parts in the vertical direction, and the lower half thereof can move in the vertical direction in FIG. 4, that is, in the radial direction of the inner cylinder.

The four hatched portions on both sides of the insertion hole of the backup pin 81 (82) and both sides of the guide groove 17c project toward the front side of the drawing to form a reset protrusion 17d.

In the illustrated embodiment, the reset protrusions 17d and 17d are arranged so as to sandwich a reset tumbler 28 (29), which will be described later, as shown in FIG. If there is only one that faces the inner edge of the free end portion of 28 (29) (upper one in FIG. 7), there is no hindrance to operation.

In FIG. 4, the Mt. Fuji-shaped portion indicated by reference numeral 26 has a locking portion projecting adjacent to the insertion hole of the backup pin at the upper edge of the movable lower half of the operating plate 24 (25). The locking portion 26 is formed so as to partially close the upper portion of the insertion hole of the backup pin 81 (82).

As shown in FIG. 4, the movable lower half of the operating plate 24 (25) has operating plate springs 27, 27.
Due to the resilience (see FIG. 4), the locking portion 26 is urged in a direction to engage with the notched step portion (not numbered) of the inner end portion of each backup pin 81 (82).

On the other hand, the first and second actuating plates 24, 2
5, so that the first working plate 24 shown in FIG.
A first reset tumbler 28 is inserted in the slot formed on the left side of the second operating plate 25, and a second reset tumbler 29 is inserted in the slot on the right side of the second operating plate 25.

These reset tumblers 28, 29
Like the rest tumblers 21 and 22, the support shaft insertion hole 17e is a long hole (see FIGS. 2 and 4), and like the operating plates 24 and 25, moves in the inner cylinder radial direction as a whole. it can.

Further, for example, the engaging projection 7 is biased in the direction of approaching the keyhole 11 by the elastic force of the tumbler spring 31, or the unlocking notch 4 is formed on the outer edge of the free end. Etc. are the same as those of the other rotary disc tumblers 2.

The angular position of the unlocking notch 4 in the reset tumblers 28, 29 is set so as to be angularly aligned with the locking bar 11 in the normal state where no external force acts as shown in FIG. There is.

The free ends of the reset tumblers 28 and 29 are reset protrusions 17 of the operating plates 24 and 25.
It is assembled in the slot while being sandwiched between d and 17d.

In the cons lock according to the embodiment of the invention according to claim 2 configured as described above, when the first and second construction key devices are activated, as shown in FIGS. The first backup pin 81, which is biased inward by elasticity, is locked in the construction key device operating position by elastically contacting the step portion at the inner end with the locking portion 26 of the first operating plate 24. There is.

The second backup pin 82 is shown in FIG.
As shown in FIG.
Of the first actuation plate 2 while engaging with the locking portion 26 of
It is locked at the construction key device operating position in such a manner that it abuts against the inner surface of the locking portion of No. 4.

During operation of both the first and second construction key devices, as shown in FIGS. 2 and 3,
The locking projections 19 of both the first and second rest tumblers 21 and 22 are in contact with the backup pins 81 (82), and the unlocking notch 4 is in an angular position aligned with the inner edge of the locking bar 11.

During construction, as shown in FIG. 3, the first part, which is shorter inward than the part corresponding to the first reset tumbler 28, is constructed.
When the construction key CK1 is inserted into the keyhole, the first construction key CK1 does not come into contact with the first reset tumbler 28, and thus the reset tumbler 2
The unlocking notch 4 of 8 (see FIG. 4) remains aligned with the locking bar 11.

This state also applies to the second operating plate 25 (see FIGS. 3 and 4).

At this time, if the inner cylinder is turned, the locking bar 1
Since 1 moves in the inner cylinder radial direction without interfering with the reset tumbler, other rotary disc tumblers 2,
As long as 2 is also placed at the unlocking angle position, this cons lock is the first construction key CK1 during the construction period.
Can be locked and unlocked by

As shown in FIG. 5, when the second construction key CK2 is first inserted into the key hole 5 after the completion of construction, the engaging protrusion 7 of the first reset tumbler 28 is exposed as shown in FIG. The second that secures the flat surface of the blade
The construction key CK2 pushes the first reset tumbler 28 in the clockwise direction, so that the unlocking notch 4 of the first reset tumbler 28 does not align with the locking bar 11.

When the inner cylinder 14 is rotated in this state, as shown in FIG.
As shown in FIG. 5, the locking bar 11 that rides on the inner peripheral surface of the outer cylinder 12 from the cam groove 32 of the outer cylinder by the wedge action moves in the radial direction of the inner cylinder and moves in the free end of the first reset tumbler 28. It interferes with the part and pushes it in the same direction as the moving direction of the locking bar 11.

At this time, since the first reset tumbler 28 and the first actuating plate 24 are integrally connected via the protrusion 17d formed on the latter, both are arranged in the radial direction of the inner cylinder, that is, in FIG. Moves upward, and as a result, the engagement between the first operating plate 24 and the first backup pin 81 is released, and the latter is released from the former.

Then, the first backup pin 81 is notched by its resilience of the reset spring 23 (see FIG. 3).
1a moves in a direction aligned with the corresponding first rest tumbler 21, and thus the first construction key device is released.

In the released state of the first construction key device, as shown in FIG. 5, the first backup pin 81
The inner end of the second backup pin 82 abuts on and is locked to the outer end of the second backup pin 82.
The extending position of the inner cylinder 1 in the axial direction is defined.

As shown in FIG. 5, the second backup pin 82 is in a state in which an unnumbered notch formed in the inner end thereof is engaged with the locking portion 26 of the second actuating plate 25. Even if the backup pin 81 is elastically contacted, its axial position does not change. This state is the state in which the second construction key device is operating.

In the illustrated embodiment, in order to transmit the movement of the first reset tumbler 28 to the first operating plate 24, a projection is formed on the first operating plate 24 and this is engaged with the first reset tumbler 28. This is done by, for example, projecting an engaging pin on the surface of the first reset tumbler 28 on the side of the first operating plate and engaging this with an elongated hole formed in the first operating plate 24. (Not shown). in this case,
The shape of the elongated hole becomes an arc along with the rotation of the first reset tumbler 28 by the first construction key CK1.

When the above-mentioned first construction key device is released (when the second construction key device is activated), as shown in FIG. 8, the locking protrusion 19 of the first rest tumbler 21 (one in the illustrated embodiment). Passes through the notched portion 81a of the first backup pin 81, so that the first rest tumbler 21 is rotated by a predetermined angle by its urging force.

Since the unlocking notch 4 is no longer angularly aligned with the locking bar 11, the first rest tumbler 21 starts to function as the rotary disc tumbler 2.

Therefore, only the second construction key CK2 in which the recess 9 (see FIG. 1) having an appropriate depth is formed in the portion of the first rest tumbler 21 which faces the engaging projection 7 can be used until then ( That is, the first construction key CK1 used (during construction) becomes invalid.

The second construction key CK2
Is used by real estate companies for building management, for example until the completed building is sold.

By the way, when the building sells, the real estate company also hands over the duplicate key (dwelling unit key: not shown) to the resident. This duplicator key is the second 5 keys inside the inner cylinder.
The recesses corresponding to the rest tumblers 22-1 to 22-5 (see FIG. 3) were formed regularly, and the blade flat surface facing the engagement protrusion 7 of the innermost second reset tumbler 29 was made long enough to be secured. It is a thing.

When the resident first inserts the duplicate key into the keyhole, the second construction key device is in operation at this time, and therefore the lock is naturally unlocked, but at the same time, as described above, and as shown in FIG. As shown in FIG. 6 and FIG. 7, the second reset tumbler 29 releases the second backup pin 29.

Then, as shown in FIG. 9, the second backup pin 82, which receives the elastic force of the reset spring 23 via the first backup pin 81, is pushed inward by the first backup pin 81, and It is pushed to the predetermined position shown in 9.

Then, the second rest tumbler 2 to which the cutout portions 82a, 82a of the second backup pin 82 correspond, respectively.
The second construction key device is also released in this manner by moving in the direction aligned with 2.

When the second construction key device is released, the first backup pin 81 also moves further into the inner cylinder together with the second backup pin 82, but the cutout portion 81a of the first backup pin 81 is slightly longer. Therefore, the first rest tumbler 21 does not come off from the cutout portion 81a.

When the second construction key device is released as described above, the second construction key CK2 used by the real estate company until then becomes invalid, and only the composite key can be used thereafter.

FIGS. 10 to 19 show an embodiment of the invention described in claim 3, and in this embodiment also, when the construction key device is operated, as shown in FIG. 10, the stop tumblers 21, 22 are locked. The projection 19 is locked to the backup pin 8 and its unlocking notch 4 is always in the inactive angular position in which it is aligned with the locking bar 11.

However, when the construction key device is released, as shown in FIG. 11, the rest tumbler is aligned with the cutout 8a (see FIG. 12) of the backup pin, and the locking projection 18 engages with this cutout 8a. As a result of the insertion, the unlocking notch 4 becomes misaligned with the locking bar 11 and starts to operate as a tumbler, as in the above-described embodiment.

It should be noted that the engaging projection 7 is 2 in FIG. 11 and FIG.
The reason why it is represented by a heavy line is to make this portion inclined by, for example, press working so as to facilitate the operation at the time of engagement with the duplicate key (see FIG. 13).

The tumbler spring 31 is a torsion coil spring in order to improve the certainty of the operation of the rotary disc tumbler. Correspondingly, the tumbler spring 31 is provided on the opposite side of the support shaft 3 from the center axis of the inner cylinder. 33 is attached, and the tumbler spring 31 is wound around this (see FIG. 10).

On the other hand, as shown in FIG. 12, the backup pin 8 in the invention described in claim 3 is not divided as described above but is a single rod.

The backup pin 8 is provided with first and second locking notches 34, 35 on the side facing the central axis of the inner cylinder along the lengthwise direction, and notches 8a, 8 on the opposite side.
a are formed respectively.

On the other hand, in the invention described in claim 3,
Of the eleven rotary disc tumblers in total shown in FIG. 13, three close to the key guide 15 are rotary disc tumblers that are always used when the construction key device is activated and released.

Then, in the same manner as in FIG. 3, a 1-hour pause tumbler 21, a first reset tumbler 28, first to fifth secondary pause tumblers 22-1 to 22-5 and a second reset tumbler 29 are formed. ing.

The difference between the rotary disk tumbler lock with a construction key device according to claim 2 and the invention according to claim 3 is that the former has two primary and secondary rest tumblers 21, 22. The first and second backup pins 81 and 82, which are divided and continuous in the lengthwise direction, are engaged with each other, and a gap is provided between these backup pins so that the first backup pin 8 is inward. The second backup pin is not moved when moving to and releasing the primary pause tumbler.

On the other hand, in the latter case, that is, in the rotary disk tumbler lock with the construction key device according to the third aspect of the present invention, as shown in FIG. 13, when the first construction key CK1 is used, the first locking notch 34 is formed. When the backup pin 8 is held in the operating position shown in FIG. 13 by engaging the first operating plate 24 (see FIG. 12) with each other, the step portion on the left side of the second locking notch 35 and the second operating plate 25.
Keep a gap between and.

As described above, and as will be described later again, the second construction key CK2 is inserted into the key hole, and the first reset tumbler 28 is used to operate the operating plate 26.
The locking portion 26 of the inner cylinder by moving in the axial direction of the inner cylinder.
When the engagement between the first locking notch 34 and the first locking notch 34 is released, the backup pin 8 is moved to the right by the resilience of the reset spring 23, as shown in FIG. The tumbler 21 is aligned with the axial direction of the inner cylinder.

At the same time, the left step portion of the second locking notch 35 is abutted against the locking portion 26 of the second operating plate 25, the backup pin 8 is kept at the position shown in FIG. The construction key CK2 can be used.

When the resident handed the dwelling unit key HK from the real estate company first inserts the dwelling unit key HK, the second operating plate 25 releases the backup pin 8 in the same manner as described above, and the backup pin 8 becomes As shown in FIG. 15, it moves further to the right so that the entire rotary disc tumbler operates as a tumbler.

FIG. 16 shows the first (second) actuating plate 24 (25).
The view from the inside (right in Fig. 13), the operating plate is up and down 2
It is the same as that of the above-mentioned fourth illustration in that the upper working plate is fixed, but the lower one is guided so as to be movable in the vertical direction and is urged downward. .

Further, the locking portion 26 is provided above the backup pin insertion hole 17b (see FIG. 17) opened in the lower operation plate.
17 is formed, the backup pin 8 has a step portion on the front side in FIG. 17 of the lock notch 34 (35).
Is locked to the operating plate by engaging with.

Then, the reset tumbler 28 (2
When the engagement projection 7 of 9) comes into contact with the flat surface of the key, as shown in FIG. 17, the unlocking notch 4 of the reset tumbler is disengaged from the locking bar 11, and in this state, the inner cylinder is rotated via the duplicator key. Then, the reset tumbler 28 (29) pushes the lower half of the operating plate closer to the center axis of the inner cylinder via the reset projection 17d of the operating plate, and as a result, the backup pin 8 is released from the locking portion 26. Then, it moves in the direction of the paper surface, and as shown in FIG. 19, it sinks below the locking portion 26 and settles in a new position.

[0087]

As is apparent from the above description, according to the invention described in claim 1, at least one selected tumbler is designated as a rest tumbler, and the rest tumblers are formed with locking projections. During operation of the construction device, the locking protrusion is engaged with the backup pin to put the resting tumbler in the inoperative state, so that the construction key can be used in which the portion facing the resting tumbler is thinned or shortened. The first use of a duplicate key after completion allows the backup pin to move in the direction of the inner cylinder axis, allowing the rest tumbler to dive into the cutout portion of the backup pin to free it, thus allowing the construction device to be released without specialized tools or skills. As a result, the unlocking work of the construction device can be greatly streamlined. .

For the same reason, the number of persons who handle the duplicate key can be minimized, and the security of the lock can be further enhanced.

Furthermore, in principle, the shape of the construction key can be made completely different from that of the construction key, and there is no fear of duplicating the construction key from the construction key.

In addition, according to the second and third aspects of the present invention, the construction key device can be switched in two steps, the safety of the lock can be further improved, and construction and building There are various effects such as easier management.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a rotary disk tumbler lock previously proposed by the applicant.

FIG. 2 is an enlarged cross-sectional view of the cons lock according to the second embodiment of the invention, showing a case where the construction key device is in operation.

FIG. 3 is an enlarged vertical sectional view of a cons lock according to an embodiment of the invention as set forth in claim 2, showing a case where the first and second construction key devices are in operation.

4 is a transverse cross-sectional view of an operating plate and a release tumbler portion of the cons lock shown in FIG. 3, showing a case where a construction key device is operating.

5 is a vertical cross-sectional view of a cons lock similar to FIG. 3, showing a state in which the first construction key device is released.

FIG. 6 is a transverse cross-sectional view of an actuating plate and a release tumbler portion of the cons lock similar to FIG. 4, showing a state in which a second construction key or a duplicate key is inserted into the key hole.

7 is a transverse cross-sectional view of the actuating plate and release tumbler portion of the cons lock similar to FIG. 4, showing a state in which a second construction key or a duplicate key is inserted into the key hole to unlock, and the inner cylinder is slightly rotated. Indicates.

FIG. 8 is an enlarged cross-sectional view of the cons lock similar to FIG. 2, showing a state in which the construction key device is released.

FIG. 9 is a vertical cross-sectional view of a cons lock similar to FIG. 3, showing a state in which the first and second construction key devices are released.

FIG. 10 is an enlarged cross-sectional view of the cons lock according to the third embodiment of the invention, showing a case where the construction key device is in operation.

FIG. 11 is an enlarged cross-sectional view of the cons lock according to the third embodiment of the present invention, showing a case where the construction key device is released.

FIG. 12 is a side view of the backup pin of the cons lock according to the third embodiment of the invention.

FIG. 13 is an enlarged vertical sectional view of the cons lock according to the third embodiment of the invention, showing a case where the first and second construction key devices are in operation.

FIG. 14 is an enlarged vertical sectional view of the cons lock according to the third embodiment of the invention, showing a case where the second construction key device is in operation.

FIG. 15 is an enlarged vertical sectional view of the cons lock according to the third embodiment of the invention, showing a case where the construction key device is released.

FIG. 16 is a cross-sectional view of the operating plate and the release tumbler portion of the cons lock according to the third aspect of the present invention, showing a case where the construction key device is operating.

FIG. 17 is a cross-sectional view of the actuating plate and the release tumbler portion of the cons lock similar to FIG. 16, showing a state in which a second construction key or a duplicate key is inserted into the key hole.

FIG. 18 is a transverse cross-sectional view of the actuating plate and the release tumbler portion of the cons lock similar to FIG. 16, showing a state in which the second construction key or the duplicate key is inserted into the key hole to unlock, and the inner cylinder is slightly rotated. Indicates.

19 is an enlarged cross-sectional view of the cons lock similar to FIG. 16,
The state in which the construction key device is released is shown.

[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 convex stripes 14 Inner cylinder 15 key guide 16 tail plugs 17 partition boards 18 retainer 19 Locking protrusion 21 First Pause Tumbler 22 Second Pause Tumbler 23 Reset spring 24 1st operating plate 25 Second actuation plate 26 Locking part 27 Working leaf spring 28 First Reset Tumbler 29 Second Reset Tumbler 31 tumbler spring 32 cam groove 33 spring shaft 34 First locking notch 35 Second locking notch 81 1st backup pin 82 Second backup pin

Claims (5)

[Claims] 1. At least one tumbler of a rotary disc tumbler lock is designated as a resting tumbler, and a locking protrusion is formed on an inner edge of a free end of the resting tumbler so that the locking protrusion is actuated when a construction key device is operated. Put the resting tumbler in a non-operating state by engaging with the backup pin, and then cut out the side edge of the blade ahead of the part facing the resting tumbler to make it thin, or use a construction-specific construction key shortened. On the other hand, while the construction key device is operating, the backup pin, which is cut out in the vicinity of the portion that engages with the rest tumbler, is guided so as to be movable in the axial direction by a certain distance, and the cutout portion is aligned with the rest tumbler. On the other hand, when the construction key device is activated, An operating plate that engages with the up pin and locks it at the construction key device operating position is provided so as to be movable in the radial direction of the inner cylinder, and is arranged so as to overlap with this operating plate and is movable in the radial direction of the inner cylinder. On the outer edge of the free end of the guided reset tumbler, an unlocking notch is formed that aligns with the locking bar when the construction key is inserted into the key hole, so that when the construction key is used, the locking bar engages with the reset tumbler notch. The operating plate is allowed to enter and the backup pin is held at the locking position, and the reset tumbler and the locking part between the reset tumbler and the operating plate are operated during operation of the housing key that secures the blade flat surface facing the engaging protrusion of the reset tumbler. Through the locking bar to move the operating plate, and unlock the backup pin by the operating plate to remove the backup pin. Release, have been allowed to align the rest tumbler and the notch portion of the backup pin, rotary disc tumbler lock with construction key device, characterized in that it was to release the construction key device. 2. At least one tumbler of a rotary disc tumbler lock is designated as a first rest tumbler, and at least one tumbler that is adjacent to and inside the first rest tumbler is designated as a second rest tumbler. Then, a locking protrusion is formed on the inner edge of the free end of each of the first and second resting tumblers, and when the construction key device is activated, the resting tumbler is deactivated by engaging the locking protrusion with the backup pin. In the state, the side edge of the blade ahead of the part facing the resting tumbler is cut out so that the first construction key can be used which is thin or short, while
When the construction key device is activated, the backup pin, which is cut out near the portion that engages with the rest tumbler, is divided into a first backup pin that engages with the first rest tumbler and a second backup pin that engages with the second rest tumbler. Then, each of them is guided so as to be movable in the axial direction by a certain distance, and the first backup pin is biased in the direction in which the notch portion thereof aligns with the rest tumbler, while it is engaged with the first backup pin when the construction key device operates. A first actuating plate for locking it in the construction key device operating position and a second actuating plate for locking the second backup pin in the construction key device operating position are provided movably in the inner cylinder radial direction, It is arranged so as to overlap with each of these operating plates, and is guided so as to be movable in the radial direction of the inner cylinder. On the outer edges of the free ends of the first and second reset tumblers, an unlocking notch is formed which aligns with the locking bar when the construction key is inserted into the key hole, so that when the first construction key is used, the reset tumbler of the locking bar is Hold the operating plate in the backup pin locking position while permitting engagement in the notch, while
While ensuring the flat surface of the blade facing the engaging protrusion of the reset tumbler, the side edge of the blade ahead of the part facing the second rest tumbler is cut out to be thin or short, and when the second construction key is operated, 1st reset tumbler and 1st reset tumbler move the 1st actuation plate with the locking bar through the engagement part of the 1st actuation plate and the 1st actuation plate, and the 1st backup pin is unlocked by the 1st actuation plate And thus aligning the cutout portion of the first backup pin with the first rest tumbler to enable the use of the second construction key, and the flat surface of the blade facing the engaging protrusion of the second reset tumbler. When first using the dwelling unit key that secures the lock, lock the second reset tumbler and the second reset tumbler with the second operating plate. Then, the second operating plate is moved by the locking bar, the second backup pin is unlocked by the second operating plate, and the second backup pin is released through the one backup pin, thereby cutting the second backup pin. A rotary disk tumbler lock with a construction key device, characterized in that the notched portion and the second rest tumbler are aligned and the construction key device is released. 3. At least one tumbler of the rotary disc tumbler lock is designated as a first rest tumbler, and at least one tumbler inward of and adjacent to the first rest tumbler is designated as a second rest tumbler. Then, a locking protrusion is formed on the inner edge of the free end of each of the first and second resting tumblers, and when the construction key device is activated, the resting tumbler is deactivated by engaging the locking protrusion with the backup pin. In the state, the side edge of the blade ahead of the part facing the resting tumbler is cut out so that the first construction key can be used which is thin or short, while
On the side facing the inner cylinder center axis of the backup pin, which is cut out in the vicinity of the portion that engages with the rest tumbler when the construction key device is activated, along the length direction thereof,
First and second locking notches are formed to guide the backup pin movably inward and urge it inwardly, while engaging the first locking notches when the construction key device is activated. And a first operating plate for locking the lever in the construction key device operating position, and the first locking notch and the first locking plate.
When the backup pin disengages from the operating plate and the backup pin moves further inward, a second operating plate that engages with the second locking notch is provided movably in the inner cylinder radial direction. The free ends of the first and second reset tumblers, which are arranged so as to overlap with each other and are guided to be movable in the radial direction of the inner cylinder, are aligned with the locking bar when the construction key is inserted into the keyhole. An unlocking notch is formed to hold the operating plate in the backup pin locking position while allowing the locking bar to engage the reset tumbler when using the first construction key, while engaging the first reset tumbler. A second construction in which a flat surface portion of the blade facing the projection is secured and a side edge of the blade ahead of a portion facing the second rest tumbler is cut out to be thin or short. Operation, the locking bar moves the first operating plate through the first reset tumbler and the locking portion between the first reset tumbler and the first operating plate, and the backup pin is unlocked by the first operating plate. The backup pin is released, thereby aligning the cutout portion of the backup pin with the first rest tumbler to enable the use of the second construction key, and the flat surface of the blade facing the engaging protrusion of the second reset tumbler. When first using the dwelling unit key that secures the lock, the second reset plate is moved by the locking bar through the second reset tumbler and the locking portion between the second reset tumbler and the second working plate, and the backup pin by the second working plate is used. The lock of the second backup pin and align the notch of the second backup pin with the second rest tumbler. Rotary disc tumbler lock with construction key device, characterized in that it was to release the over equipment. 4. The reset protrusion and the actuating plate are engaged with each other by a reset projection which is provided on a surface of the actuating plate facing the reset tumbler and faces the inner edge of the free end of the reset tumbler. A rotary disc tumbler lock with a construction key device according to 1 or 2. 5. The reset pin, wherein the engagement portion between the reset tumbler and the operating plate is a reset pin which is provided on a surface of the reset tumbler facing the operating plate so as to project into a pin hole opened in the operating plate. Or a rotary disc tumbler lock with a construction key device according to item 2.