JP2003269017A - Construction key device in rotary disc tumbler lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel construction key device adaptable for a rotary disc tumbler key. <P>SOLUTION: Unlocking notches and construction notches 28 are formed in respective construction tumblers 25 and the tumbler is constituted so that the construction notch 28 is orderly fitted to the inside edge of a locking bar when the construction key is inserted in the key hole when actuating the construction device and that the unlocking notch is orderly fitted to the locking bar when a duplicate key is inserted when releasing the construction key device. Release of the construction key device is changed over by filling an infilling carried in an infilling housing groove 36 into the construction notch 28 and thereafter, the inner cylinder is made irrotational even if the construction key is inserted in the key hole and the construction notch is orderly fitted to the locking bar. <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 construction key device (hereinafter simply referred to as a cons device) for a rotary disc tumbler lock, and more particularly to a cons device that can be unlocked with a duplicate key without using a special tool.

[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
As shown in FIG. 1, an annular rotary disk tumbler 2 having a key insertion hole 1 having a size capable of enclosing a key hole in the central portion is pivotally supported on a support shaft 3 while the free end portion is outside. An unlocking notch 4 is formed on the end edge, and on the other hand, at the opening end edge of the key insertion hole 1, a moving path of the leading end is inserted into the key hole 5 and a duplicate key 6
The engaging protrusions 7 that interfere with the flat surface portion or the end edge portion of the blade of the blade are integrally projected, and each rotary disk tumbler 2 is biased in the direction in which the engaging protrusions 7 approach the duplicating key 6, and is normally backed up When locked to the pin 8, while each of the engagement protrusions of these tumbler groups engages with the corresponding recess 9 formed in the blade of the compound key 6 inserted into the key hole 5, each rotary disc tumbler The unlocking notch 4 is aligned 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 if the construction key device is released after the construction is complete, the construction key will become unusable, and the owner or resident will be unable to use it thereafter. A device that allows only the dwelling unit key (key) to be used, to streamline 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 "combined key" here does not mean a so-called spare key (spare key) but a key having a regular key shape for unlocking one lock.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel cons device applicable to the rotary disc tumbler lock according to Japanese Patent Application No. 2001-316885.

[0007]

In order to achieve the above object, the invention according to claim 1 specifies at least one rotary disc tumbler of a rotary disc tumbler lock as a tumbler, and solves each tumbler. A lock notch and a cons notch are formed so that the cons notch aligns with the inner edge of the locking bar when the construction key device is actuated and the conski is inserted into the key hole, and when the construction key device is released the unlock key is inserted. The construction of the rotary disc tumbler lock is characterized in that the lock notch is configured to be aligned with the locking bar, and the cons notch is sealed with a filling body to have a releasing mechanism for releasing the construction key device. Key device.

The invention described in claim 2 is characterized in that the filling body is a sphere.

Further, in the invention according to claim 3, the release mechanism extends in the vicinity of the locking bar in a manner penetrating the partition plate in parallel therewith, and has a locking groove formed therein. At least one cons bar is arranged such that the angular position is different and movable in the length direction, and this is biased in one direction, while the locking groove of the inner cons bar of the partition plate constituting the inner cylinder is provided. Designate at least one nearby partition plate as a cons partition plate, guide this cons partition plate so that it can move in the same direction as the moving direction of the locking bar when the inner cylinder rotates, and urge it in the direction that engages with the locking bar. Therefore, when the inner cylinder is rotated, it is moved integrally with the locking bar, and a locking portion that engages with the locking groove of the cons bar is formed on the cons partition plate, and when the construction key device operates With a stop The stopper groove is engaged to lock the construction bar in the operating position.On the other hand, when the construction key device is activated, a filling body storage groove is formed inside the portion of the construction bar that intersects with the other partition plate. A filling body that is large enough to be inserted into the cons notch and protrudes inward from the inner edge of the cons bar is accommodated in the filling body storage groove. Even when released, the cons bar is locked in the operating position by the engagement between the filling body and the constantr, and when the duplicate key is inserted into the keyhole,
It is characterized in that the conski is made unusable by engaging a filling body matching the cons notch into the cons notch.

Further, the invention according to claim 4 is characterized in that the side edge of the portion which intersects with the cons partition plate of the conski and the duplicating key,
It is characterized in that a relief notch having an inclined edge is formed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 2 and 3, reference numeral 12 indicates an outer cylinder, and reference numeral 13 indicates an inner cylinder. The outer cylinder 12 is formed with a cam groove 14 (see FIG. 2) having a V-shaped cross section that engages with the above-mentioned 11. .

The locking bar 11 is biased downward in FIG. 2 so that it is elastically pressed by the cam groove 14 by a locking bar spring (not shown).

On the other hand, in the inner cylinder 13, like a conventionally known lever tumbler lock, a plurality of partition plates 15, 15 are integrally coupled to each other by a pair of retainers 16, 16 (see FIG. 2), and A key guide 17 is attached to the end, and a tail plug 18 (see FIG. 3) is attached to the inner end.

Then, the rotary disc tumbler 2 (see FIG. 1) is housed in a slot (gap) 19 formed between one partition plate 15 and another partition plate 15 adjacent thereto, and is swung by the spindle 3. As described above, the engagement projection 7 is movably supported and is biased in the direction of approaching the blade of the compound key 6 by the elastic force of the tumbler spring 21 (see FIG. 1).

As shown in FIGS. 2 and 3, a pair of cons bars 22, 22 extending parallel to the locking bar 11 are arranged near the locking bar 11 at different angular positions from the locking bar 11. .

In the illustrated embodiment, a pair of cons bars 2
Although 2 and 22 are arranged at symmetrical angular positions with respect to the locking bar 11, this is not an essential constituent feature of the present invention, and as will be described later, it is sufficient to have at least one cons bar.

The cons bar 22 is guided so as to be movable in the length direction, that is, the axial direction of the inner cylinder in a manner of penetrating the partition plates 15 forming the inner cylinder, and its inner portion near the outer end ( A locking groove 23 that engages with a later-described cons partition plate is formed in the upper left side in FIG. 3.

Further, as shown in FIG. 3, the cons bar 22 is biased in a fixed direction (to the right, which is the indoor side in the illustrated embodiment) by the elastic force of the cons bar spring 24 as a compression coil spring. During operation of the cons, the cons partition plate is engaged and locked in the operating position.

On the other hand, in the present invention, at least 1
A single rotary disc tumbler (6 in the embodiment shown in FIG. 3) is designated as the constanter 25.

When the construction key device is activated, the constambler 25 enables the use of a construction key 26 (see FIG. 3) different from the composite key used only during construction, and the construction key device is released after the construction is completed. At times, it is possible to use only the duplicate key.

As shown in FIG. 2, the outer edge 27 of the free end portion of the constanter 25 forms a part of an arc centered on the support shaft 3. A cons notch 28 is formed at the same angular interval as the locking bar 11 and the cons bar 22 from the unlocking notch 4 (see FIG. 1).

The size of the cons notch 28 is the unlock notch 4
Same as, but for the unlocking notch 4, a constanter 25
Is formed in the direction opposite to the urging direction (clockwise in FIG. 2).

Therefore, when the duplication key is inserted into the key hole, the unlocking notch 4 is naturally aligned with the inner edge of the locking bar 11, but at the same time, the cons notch 28 is angularly aligned with the cons bar 22 ( (See FIG. 8).

Further, the depth of the depression corresponding to the constanter 25 of the conski 26, in other words, the depth of the depression of the conski corresponding to the constanter 25 shown in FIG. When inserted, the cons notch 28 is set to align with the inner edge of the locking bar 11 (see FIG. 6).

Accordingly, when the consky 26 is inserted into the keyhole, all the constamblers 25, 25 and the rotary disc tumblers 2 and 2 which are not the constanters.
Aligns with the inner edge of the locking bar 11, which enables locking and unlocking of the rotary disc tumbler lock by Consky used during construction.

On the other hand, partition plates 15 and 1 constituting the inner cylinder 13
Of the five, at least one partition plate near the locking groove 23 of the cons bar is designated as the cons partition plate 29.

Cons partition plate 29 in the illustrated embodiment
As shown in FIG. 3 and FIG. 4, is a thick fixed partition plate 29a having a stepped shape and a substantially circular outer shape, and a projection (29) fitted to a guide groove 29c formed in the lower central portion of the fixed partition plate 29a ( And a semicircular movable partition plate 29b which is formed (not shown).

With the above structure, the movable partition plate 29b is guided so as to be movable in the vertical direction in FIG. 4, in other words, in the same direction as the moving direction of the locking bar 11 when the inner cylinder is rotated.

The movable partition plate 29b is urged downward in FIG. 4, that is, in the direction in which it engages with the locking bar 11, by the elastic force of the partition plate springs 31, 31 as compression coil springs.

Furthermore, an unnumbered notch that engages with the inner edge of the locking bar 11 is formed at the lower end portion of the movable partition plate 29b in FIG. 4, and the engagement of this notch with the locking bar 11 results. The movable partition plate 29b moves in the radial direction of the inner cylinder integrally with the locking bar when the inner cylinder rotates.

Further, as shown in FIGS. 3 and 4, an engaging portion 32 is formed at the lower end of the movable partition plate 29b,
When the construction key device is activated, this locking portion 32
Engages with the locking groove 23 of the cons bar,
To the operating position shown in FIG.

The shape of the notch in the central portion of the movable partition plate 29b is set so as not to interfere with the key hole 5 when the locking bar 11 is engaged with the cam groove 14, as shown in FIG. Although the inner cylinder rotates, the locking bar 1
When 1 rides on the inner peripheral surface of the outer cylinder, it is shaped so as to partially cover the lower end portion of the keyhole as shown by the chain line.

On the other hand, of the pair of partition plates 15 and 15 sandwiching the constanter 25, one partition plate in the biasing direction of the cons bar, for example, the partition plate 15 located on the right side of the constanter indicated by symbol A in FIG. As shown in FIG. 5, a shelf 33 is formed.

As shown in FIG. 5, the shelf portion 33 has a convex guide notch 34 for guiding the locking bar 11 at the center thereof, and the cons bars 22 penetrate to the left and right of the guide notch 34. It is a thick portion where the holes 35, 35 are opened.

The upper surface of the shelf 33 has a downwardly convex arc, and the outer edge 26 of the free end of the constanter 26 is formed.
It extends along with a slight gap between and.

Since the upper surface of the shelf 33 is cut out by the cons bar hole 35, the guide cutout 3 is formed.
A total of three rectangular notches will be formed, including those according to No. 4.

On the other hand, inside the portion of the cons bar which intersects with the other partition plate B (see FIG. 3) facing the partition plate A when the construction key device is activated, as shown in FIG. A body storage groove 36 is formed.

In the illustrated embodiment, since there are 6 constanters 25, a total of 6 filling body storage grooves 36 are formed, and each filling body storage groove 36 has a filling body such as a steel ball. 37 is stored.

The size of the filling body 37 is such that it can be fitted into the cons cutout 28 (see FIG. 2) of the constanter and that it projects upward from the upper surface of the shelf 33 of the partition plate A ( 2 and 6).

It should be noted that, in general, the plurality of filler storage grooves 3 are provided.
Although the filling bodies 37 are housed in 6 and 36 respectively, in the illustrated embodiment, as shown in FIG. 3, only one filling body is shown for the sake of clarity.

Further, although both sides of each filling body accommodating groove 36 are open, both sides of the filling body accommodating groove 36 are closed by the inner side surface of the cons bar hole 35 (see FIG. 5) when the construction key device is operated. The filler 37 does not drop from the filler storage groove 36.

In the cons device according to the embodiment of the present invention constructed as described above, when the conski 26 is inserted into the keyhole during construction as shown in FIG. Angularly aligned with the inner edge of the bar 11, the inner cylinder is pivotable due to the working principle of the rotary disc tumbler lock.

Further, since the Conski blades corresponding to the ordinary rotary disc tumblers 2 and 2 (three tumblers on the left side in FIG. 3) which are not constanters have the same depressions as the duplication key, the rotary is used. Each unlocking notch 4 of the disc tumbler 2 is angularly aligned with the inner edge of the locking bar 11.

In other words, the rotary disk tumbler lock can be locked and unlocked by Consky when the cons device according to the present invention is operating.

In this state, when the inner cylinder 13 is rotated counterclockwise as shown in FIG. 7, the locking bar 11 comes out of the cam groove 14 and rides on the inner peripheral surface of the outer cylinder 12, so that the locking bar 11 is The inner cylinder 13 moves in the central axis direction.

Then, as described above, the movable partition plate 29b of the cons partition plate also moves integrally with the locking bar 11 in the direction of the central axis of the inner cylinder, so that the locking portion 32 (see FIGS. 3 and 4) of the cons partition plate. The cons bar 22 is released from the cons partition plate in this manner.

By the way, as described above, the movable partition plate 29b is used.
Interferes with the side edge of the conski 26 or the blade of the duplicate key 6 when moving in the central axis direction of the inner cylinder. To avoid this interference, the side edge of the blade aligned with the movable partition plate 29b should be inclined. An escape notch 38 (see FIG. 3) having an edge is formed.

As shown in FIG. 3, the escape notches 38 are formed symmetrically on both side edges of the blade, so that this conski (reverse key) can be inserted into the keyhole with its front and back reversed. Because it is a key.

Returning to the explanation of the operation, the cons bar 22 is released from the cons partition plate 29 with the rotation of the inner cylinder, and the cons bar spring 24 (see FIG. 3) is elastically inward (right in FIG. 3). Try to move to.

However, when the construction key device is activated, as is apparent from FIGS. 3 and 7, the filling body 37 projecting on the inner surface of the constellation bar 22 interferes with the outer edge 27 of the free end of the consteller 25, so that the construction bar 22 is formed. Through the filling body 37
It is locked by 5 and cannot move inward.

After rotating the inner cylinder of the rotary disk tumbler lock unlocked by the consky as described above in the locking direction or in the unlocking direction, for example, by turning back at the same angle and pulling out the conski from the key hole, the unlocking is performed. The operation ends.

However, at this time, the cons bar 2
2 is in a state of being disengaged from the movable partition plate 29b, and the cons bar is moved inwardly by the play of the filling body 37 in the filling body storage groove 36.
Despite the elasticity of the partition leaf spring 31 (see FIG. 4), the locking portion 32 of 9b is caught in the opening edge of the locking groove 36 and cannot be engaged in the locking groove.

Therefore, the escape cutout 38 is formed at the side edge of the blade of the conski or the duplication key, and when the conski 26 is pulled out from the key hole 5, the inclined edge of the escape cutout is moved to the movable partition plate. It engages with the keyhole of 29b.

Then, due to the wedge action generated between them, the locking portion 32 of the movable partition plate is forcibly pushed into the locking groove 23 of the cons bar, and the movable partition plate 29b returns to the normal position shown in FIG. To do.

On the other hand, when the construction is completed and the duplicate key is handed to the resident, and the resident inserts it into the keyhole, as shown in FIG. 8, the release notches 4 and 4 of all the constantblers 25 and 25 are locked. Align with the inner edge of the bar 11.

At the same time, due to the above-mentioned structure, the cons notch 28 of each consturter 25 is angularly aligned with the cons bar 22, that is, the filling body 37 carried by the cons bar 22.

When the inner cylinder is turned counterclockwise, for example, in this state, as shown in FIG. 9 and, as described above, the locking bar 11 rides on the inner peripheral surface of the outer cylinder 12, and along with this. The movable partition plate 29b releases the cons bar 22.

Then, the cons bar 22 is pushed to the right in FIG. 3 by the elastic force of the cons bar spring 24, but this time, since the filling body 37 and the cons notch 28 of the constanter are angularly aligned, the former is The cons bar 22 moves inward in a manner of slipping through the latter, contacts the bottom surface of the unnumbered cons hole formed in the tail plug 18, and stops.

Then, as shown in FIG. 10, when the cons bar 22 is moved, the filling body storage groove 36 is formed by the wedge action.
The sloping edge of pushes the packing 37 up against the surface of the cons bar.

In the state shown in FIG. 10, the filling body 37 is engaged in the cons notch 28, and the front and rear sides are formed by the cons partition plate 2.
Since the opening of the cons cutout 28 is sandwiched by 9 and 29 and is closed by the shelf portion 33 (see FIG. 5) of the cons partition plate, the filling body 37 does not spill out from the cons cutout 28.

In FIG. 10, only one filling body is shown, but in actuality, the six fillers stored in the six filling body storage grooves correspond to the constanter 25, respectively.
Engage in the cons cutout 28.

After the locking / unlocking operation using the duplicate key, when the duplicate key is pulled out from the keyhole, as shown in FIG.
5 is returned to the standby angle position shown in FIG. 2 by the elastic force of the cons bar spring.

At the same time, as shown in FIG. 10, the other unnumbered locking groove located to the left of the locking groove 23 in FIG. Two
9b is engaged in this locking groove by the elastic force of the partition leaf spring 31.

Since the position of the other not-numbered locking groove in the longitudinal direction of the cons bar 22 is constant, the movable partition plate can return to the normal position shown by the solid line in FIG. 4 only by its biasing force. it can.

Therefore, although the escape notch 38 is formed in the duplication key, when the duplication key is pulled out from the key hole, its inclined edge does not interfere with the movable partition plate 29b.

The state shown in FIG. 11 is different from that shown in FIG. 2 in that the filling body 37 is inserted into the cons notch 28.

Therefore, the conventionally used Consky 2
Insert 6 into the keyhole and insert cons notch 28 into locking bar 1
Even if it is aligned with the inner edge of No. 1 (see FIG. 6), the filling body 37 obstructs the rotation of the inner cylinder.

In other words, the conventional construction key 26 cannot be used, that is, the construction key device is released.

As shown in FIGS. 6 and 8, when the depth of the recess of the duplication key is shallower than that of the consky, a cons notch 28 is formed in the counterclockwise direction with respect to the unlocking notch 4.

On the other hand, when the depth of the recess of the duplication key is deeper than that of the consky, the cons notch 28 is formed in the clockwise direction with respect to the unlocking notch 4, as shown in FIG. In FIG. 2, the cons bars 22, 22 are arranged on both sides of the locking bar 11.

[0071]

As is apparent from the above description, according to the present invention, an unlocking notch and a cons notch are formed in each constambler, and the cons notch is formed when the construction key device is actuated and the conski is inserted into the keyhole. When the construction key device is released so that it is aligned with the inner edge of the locking bar, the unlock notch is configured to align with the locking bar when the key is inserted, and the switching of the release of the construction key device is carried by the cons bar. It was done by filling the cons notch with the filling body, and after that, even if the conski was inserted into the key hole and the cons notch was aligned with the locking bar, the inner cylinder could not be rotated, so a rotary disc tumbler lock Has achieved its intended purpose of providing a construction key device of.

Further, since there is no difference in appearance between the duplicate key and the consky, it is possible to add a function to the rotary disc tumbler lock that the lock can be changed only once without changing the cylinder. There are various effects such as being possible.

[Brief description of drawings]

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

FIG. 2 is a sectional view of a rotary disk tumbler lock incorporating a cons device according to an embodiment of the present invention, showing a state in which no key is inserted into a key hole.

FIG. 3 is a longitudinal sectional view showing a construction key device in operation.

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

FIG. 5 is a front view of a partition plate of the inner cylinder.

FIG. 6 is a sectional view similar to FIG. 2, showing a state in which a consky is inserted in the key hole.

FIG. 7 is a sectional view similar to FIG. 6, showing a state in which a consky is inserted and the inner cylinder is slightly rotated.

FIG. 8 is a sectional view similar to FIG. 2, showing a state in which a duplicate key is inserted into a key hole.

FIG. 9 is a sectional view similar to FIG. 8, showing a state in which a duplicate key is inserted and the inner cylinder is slightly rotated.

10 is a vertical sectional view similar to FIG. 3, showing a state in which the construction key device is released.

FIG. 11 shows a state in which the duplicate key is removed after the construction key device is released.

FIG. 12 is a cross-sectional view similar to FIG. 7, showing a state in which the depth of the depression of the consky is different.

[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 Cam groove 15 dividers 22 Cons Bar 23 Locking groove 25 Consteller 26 Consky 27 Free end outer edge 28 Cons notch 29 Cons Partition Plate 29a Fixed partition plate 29b Movable partition board 32 Locking part 33 shelves 34 guide notch 35 Consvar hole 36 Filler storage groove 37 Packing body 38 escape notch

Claims (4)

[Claims] 1. At least one rotary disc tumbler of a rotary disc tumbler lock is designated as a tumbler, and an unlocking notch and a cons notch are formed in each tumbler, and when the construction key device is actuated, the conski is used as a keyhole. The cons notch is aligned with the inner edge of the locking bar when inserted, and the unlocking notch is aligned with the locking bar when the construction key device is released.The cons notch is sealed with a filler. A construction key device for a rotary disc tumbler lock, which has a releasing mechanism for releasing the construction key device when stopped. 2. The construction key device for a rotary disc tumbler lock according to claim 1, wherein the filling body is a sphere. 3. The release mechanism comprises at least one cons bar, which extends in the vicinity of the locking bar in a manner penetrating the partition plate in parallel with the partition plate and has a locking groove formed inside thereof, with different angular positions. In addition, it is movably arranged in the length direction and is urged in one direction, while at least one near the locking groove of the inner cons bar of the partition plate that constitutes the inner cylinder is designated as the cons partition plate. Then, this cons partitioning plate is guided so as to be movable in the same direction as the moving direction of the locking bar when the inner cylinder is rotated, and is biased in the direction in which it engages with the locking bar. In addition, a locking portion that engages with the locking groove of the cons bar is formed on this cons partition plate, and this locking portion and the locking groove are engaged when the construction key device operates. , Activate the cons bar On the other hand, a filling body accommodating groove is formed inside the portion of the cons bar that intersects the other partition plate when the construction key device is activated, and the cons notch can be engaged with the filling body accommodating groove. A filling body that projects inward from the inner edge of the cons bar in size is stored, so that even when the inner cylinder rotates and the cons partition plate releases the cons bar when the construction key device operates, The engagement locks the cons bar in the operating position, and when the duplication key is inserted into the keyhole, the conski notch can be disabled by inserting the filling body aligned with the cons notch into the cons notch. The construction key device for a rotary disc tumbler lock according to claim 1 or 2, wherein 4. The escape notch having a slanted edge is formed at a side edge of a portion of the conski and the duo key that intersects with the cons partitioning plate, according to any one of claims 1 to 3. Construction key device for rotary disc tumbler lock.