JPS59217880A - Tumbler lock with construction key apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tumbler yoke with a construction key device (hereinafter simply referred to as a cons tumbler lock).
%, relates to a cons tumbler lock in which a construction key device can be unlocked with a duplicate key.

A construction key device is a device that disables special construction keys called construction keys (for construction use only) during construction so that only the duplicate key (dwelling unit key) used by the owner or tenant can be used. This was devised to streamline locking/unlocking work and management work by builders, and to further ensure the safety of owners and tenants.The duplicate key here refers to the so-called spare key ( I'm not talking about spare keys),
- refers to a key with a regular key shape for unlocking a lock.

In the conventional construction key device, a plurality of tumblers selected from among a plurality of tumblers inside the tumbler arm are locked with a locking member so that their edges align with the shear line. During the construction, the tumbler is temporarily inoperable, and a special construction key, which is different from the duplicate key, is used as the construction key to operate only the remaining tumblers that are in operation. Then, the selected tumbler is unlocked and returned to its operating state.

Therefore, along with the special tools, the above-mentioned contractor must also bring a duplicate key to be handed over to the owner, etc. in order to confirm that the construction key device has been released, and there is a possibility that the duplicate key may be lost or duplicated by a malicious person. I can't say that there aren't any.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a construction tumbler lock that allows the owner or tenant to directly unlock the construction key device with a duplicate key provided by the owner or tenant, thereby making it easier to release the construction key device. The aim is to streamline the process and further improve the safety of locks.

In order to achieve the above objects, the present invention has an outer cylinder in which a tumbler engagement groove is formed on the inner peripheral surface along the generatrix, and the outer cylinder is rotatably fitted to the outer cylinder, and the central axis is aligned with a constant interval. It has a plurality of partition plates stacked in the direction, and an inner cylinder with a needle hole passed through it along the central axis, and a hole slot formed between the partition plates of this inner cylinder has a mai valve, respectively. A tumbler is inserted into the tumbler, which is guided so as to be swingable in the width direction of the hammer inserted into the tumbler, and is biased in the direction of engaging the tumbler engagement groove.
In the center of the key hole, W through holes of a size that can surround the needle hole are opened at different positions, and the opening edge of the key hole is engaged with the groove of the duplicate key inserted into the needle hole. A conspar facing the side edge of the tumbler is provided so as to be movable in the thickness direction of the key, and a plurality of selected tumblers facing the tumbler are arranged so as to be aligned with the shear line at the edge of each tumbler. A retaining portion capable of engaging with the conspar is formed on the edge of the 〇 side, and is disposed at a position close to the cons burner drilled hole to engage with the tumbler when the construction key device is activated. of,
They are locked in a position where their edges align with the shear line,
This makes it possible to use a construction key exclusively for construction work, which has the side edge of the part that faces the conspar when inserted into the drilled hole cut out.

On the other hand, an inclined cam is formed at one end of at least one slot facing the consper, and the cam swings in the same direction as the tumbler.
a key insertion hole having an opening that is guided by the T function and biased in a direction in which the slanted cam engages with the tumbler locking groove, and that does not interfere with the drilled hole in any swing position, and the slanted cam. a first release tumbler having a cam hole with an inclined edge that is spaced apart from the conical hole as it approaches the tumbler; are inserted so that the first release tumbler is pushed inward by the action of the inclined cam when the cylinder rotates, and the connecting member is closest to the conical hole at the inclined edge of the cam hole. In the locked state in which the slope cam of the first release tumbler is engaged with the tumbler locking groove of the outer cylinder, the outer opening 4i on the slope cam side in the key width direction of the drilled hole is The regulating edge adjacent to 1u11 is the 2nd w4
When forming a tumbler and rotating the inner cylinder using the construction key, the first and second tumblers are swung into one body, and these tumblers are rotated.
When rotating the inner cylinder, use a metal release with a full width for the part facing the key, and when rotating the inner cylinder, contact the regulating edge of the second release tumbler, which is the side edge of the duplicate key, to restrict its movement in the key width direction. , the wedge action of the inclined edge of the cam hole caused by the subsequent movement of the N1 release tumbler causes the second release tumbler to move in the direction away from the conical hole, and the second release tumbler causes the comper to be selected as described above. The invention is characterized in that the construction key device is released by retreating from the locked position with the selected group of tumblers and returning the selected group of tumblers to an operating state.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 indicates an outer cylinder, and a tumbler locking groove 2 is formed on the inner peripheral surface of the outer cylinder 1 in the direction of its generatrix. In the illustrated embodiment, the tumbler locking grooves 2 are shown as openings communicating with the outer surface, and are provided at two symmetrical locations with respect to the central axis of the outer cylinder 1.

An inner cylinder 3 is rotatably fitted inside the outer cylinder 1. This inner cylinder 3 is provided with a plurality of partitions &4.4 stacked at regular intervals in the direction of the center axis, and also has a drilled hole 5 at the center of the inner cylinder 3 at line 13. Penetrating.

Each of the plurality of slots 6.6 (1 oim> slots in the first illustrated embodiment) formed in the flap of the partition plate 4.4 has a
The key inserted into the drilled hole 5 is swingably guided in the width direction (vertical direction in FIG. 2), and is biased in the direction in which the key is engaged in the tumbler locking groove 2 (downward in FIG. 2). A slender plate-shaped tumbler 7 is inserted into the tumbler 7, and in the center of the tumbler 7, key holes 8 of a size that surrounds the keyhole 5 are opened at different positions. , the opening edge (in the embodiment shown in the second figure, the upper edge) of this key hole 8 is engaged with the groove formed on the side edge of the duplicate key inserted into the drilled hole 5, and each tumbler is closed. -7 edge is aligned with the shear line.Since the structure and function of the cons tumbler lock according to the present invention as a tumbler lock are similar to those of the conventional tumbler lock, further details are made. Further explanation will be omitted.

The cylinders in the embodiments shown in FIGS. 1 and 2 are shown as if they were machined from solid bars, but this is only shown as 7 for the purpose of simplifying the drawings. Of course, the inner cylinder 3 is actually constructed by joining partition plates punched out by press working into one body using a plate material.

Further, the tumblers 7 are urged to alternately protrude in the vertical direction.

Furthermore, in FIG. 2, the reference numeral 9.9 indicates the bottles that are parallel to each other and to the center axis side of the inner cylinder and run longitudinally through the inner cylinder 3. A compression coil spring that biases the release tumbler is used as a spring retainer for the tumbler, a member for regulating the protruding position of the tumbler 7, and a guide member for the tumbler 7. As shown in FIGS. 1 and 2, the tumbler 7 extends in the axial direction of the drilled hole, and the inner surface is the tumbler 7.
A comper 12 facing the side edge of the key is provided so as to be movable in the thickness direction of the key (in the left-right direction in FIG. The bottle 9 of tube 3 has an opening in the side plate opposite to 9.
It is fitted into the rectangular opening and is urged in the direction of protruding into the inner cylinder 3 by the compressor pressing spring 13,
Its entry position is determined by coming into contact with the partition plate 4.

Further, on the upper surface of the controller 12, for example, an arc-shaped fixing groove 14 of a constant width is formed, and furthermore,
The upper surface of the comper 12 protruding outside the side surface of the inner cylinder 3 is pressed by a comper fixing spring 15 formed into a partially arcuate shape so that it can easily fit into the fixing groove 14.

Furthermore, a plurality of (four in the illustrated embodiment; see FIG. 3) selected tumblers facing the cons/7-12
At the side edge of 7, there is a retaining part (
In FIG. 2, a cutout) 16 is formed.

On the other hand, at least one slot 6 (in the illustrated embodiment, the fifth and eighth slots counting from the hole population as shown in FIG. 3) facing the construction key The first step to remove the
and second release tumblers 17 and 18 are inserted in a superimposed manner (see FIG. 1).

The first release tumbler 17, as shown in Figure $4,
It is an elongated plate-like body with a chevron-shaped slope cam 17m formed at one end, and as shown in FIG.
The inclined cam 17a is biased in the direction of engaging the tumbler locking groove 2 by the elastic force of the compression coil spring 1.

Further, in the center of the first release tumbler 17, as shown in FIGS. 4 and 5, there is a key insertion hole 17b of a size that does not interfere with the drilled hole 5 in any of the swinging positions. Furthermore, the side edge portion facing the comparator 12 is cut out so as not to interfere with the comparator 12 protruding inside the inner cylinder. Furthermore, a pair of cam holes 17c are provided at the end of the first release tumbler 17 along the swing direction thereof.

17c is open. This cam hole 17c has an inclined edge 17d that is spaced apart from the conical hole 5 as it approaches the inclined cam 17m.
have.

On the other hand, the second release tumbler 18 is a plate-like body whose overall shape is approximately C-shaped, for example, as shown in Fig. The cut and raised portion is integrally provided as a connecting member 18a to protrude from the joint surface with the first release tumbler, and is engaged with the cam hole 17a.

Further, as shown in FIG. 5, the connecting member 18a engages with the #A oblique end edge 17d of the cam hole (see FIG. 4) at the portion closest to the conical hole 5, and the first release tumbler. Slope cam 1
7m is engaged in the tongue locking groove 2 of the outer cylinder, the regulating edge 19 formed on the second release puller/puller 17 engages the inclined cam 17a in the key width direction of the guide hole 5.
The side opening edge (the upper end in FIG. 5) is close to VC from the outside.

Such first and second release tumblers 17 and 1
The set No. 8 is also provided in the eighth slot with the slope cams facing in opposite directions.

When the construction key device is operated in the vertical position of the cons tumbler according to an embodiment of the present invention configured as described above, as shown in FIG.

The conspar 12 is placed in a position close to the lock hole 5 and engaged with the notch 16 of the tumbler 7 by the elasticity of the console spring 130, and is arranged to engage the notch 16 of the tumbler 7, and is locked at the position where it aligns with the shear line. Note that the other tumblers adjacent to the second tumbler 7 are engaged with the lower side of the controller 12.
Of course there are.

As a result, as shown in FIG. 3, the four central tumblers facing the inner surface of the console 12 become inoperative.

Therefore, as shown in FIG. 6, the edges of the two front and rear tumblers (see FIG. 3) in the operating condition of the consuff ζ align with the shear line, and the inner cylinder becomes rotatable by three circles. 1. c. In other words, when the construction key device is in operation, the consu tumbler lock is unlocked, and if the construction key device is turned into an unlocked construction key, the inner cylinder 3 will also rotate as a unit, as shown in Fig. 7. When the inclined cam 17a, which was engaged in the tumbler locking groove 2 of the outer cylinder in the engaged state, is disengaged from the tumbler locking groove 2, the first release tumbler 17 is pushed inward.

(see Figure 6), there is nothing to obstruct the movement of these release tumblers, and these first and second
The release tumblers 17 and 18 swing together. Therefore, no force is applied from the second release tumbler 17 to the construction keys 12, and the construction key device is kept in an activated state.

On the other hand, when the duplicate key IK is inserted into the lock hole as shown in FIG. 8, the edges of all the tumblers of this constable lock are aligned with the shear line, and the lock becomes unlocked. The parts of the duplicate key IK of the cons tumbler lock according to the present invention facing the first and second release tumblers 17 and 18 are not cut out and are designed to ensure their full width, as shown in FIG. So, 1st and $2 tansiller 17.

18 does not interfere with the lock hole 5 in the locked state, so it is the 1st key IK.
does not become an obstacle to insertion.

Although the four tumblers in the center of the cylinder are inactive, the four tumblers in the front and rear, two in the front and back, are in an active state, and the key shape for the four tumblers is different from that of the duplicate key, as well as in the above-mentioned operating state. Even if the key shape for a certain tumbler is the same as the duplicate key, it goes without saying that the cons tumbler lock cannot be unlocked if the keyway corresponding to the inactive tumbler is shallow. It is.

When the duplicate key is inserted and turned, for example, clockwise, the first release keys 17 are pushed inward in the same way as when the above-mentioned (iK) construction key device is inserted. In this case, the second key is placed on the side edge of the duplicate key that has secured the full width as described above.
The edge 19 of the circumferential surface 1 of the release tumbler immediately comes into contact (see FIG. 9), and the second release tumbler 18 is no longer able to move in the key width direction.

Nevertheless, the first release tumbler 17 is pushed further inward, so that the inclined edge 17d of the cam hole 17c of the first release tumbler 17c (see FIG. 4), as shown in FIG. is the connecting member 18 & which is protruded from the second release tumbler.
(Refer to the fifth factor) The wedge action pushes the key outward in the thickness direction, and the side edge of the second release tumbler 18, which is integrated with this, resists the elasticity of the console spring 130. Push Consuno-12 outward. Then, the console fixing spring 15 snaps into the fixing groove 14 (see FIGS. 1 and 2) of the console, and from then on, the console 12 is constantly fixed in the retracted position.

Then, as shown in FIG. 10, the engagement between the console 12 and the engaging portion 16 of the selected tumbler is released, and as shown in FIG. The tumbler becomes operational. In this way, the construction key device is released.

It goes without saying that the construction key device is unlocked by the first unlocking operation using the duplicate key.

After the construction key device is released, the cons tumbler lock according to the present invention functions as a normal tumbler lock. It should be noted that with this tumbler lock, the release tumbler also swings every time the lock is unlocked, but when the inventors made a prototype and investigated its usability, they found that there was almost no resistance.

Moreover, after the construction key device is released, as shown in FIG. 12, even if the construction key T-cut is inserted into the construction used during construction, the lock cannot be unlocked.

The reason is clear from Figure 12, so see details 1. c.Description will be omitted.

As is clear from the above description, in the present invention, the construction key device is unlocked by unlocking the construction key device using a duplicate key, so the above-mentioned special tools are not required, and the unlocking work of the construction key device is greatly simplified. can be rationalized.

Furthermore, for the same reason, the number of people handling the duplicate key can be minimized, and the security of vertical drawings can be further enhanced.

Furthermore, since the shape of the construction key can be made completely different from that of the duplicate key, there are various effects such as there is no possibility that the duplicate key will be copied from the construction key.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a cons tumbler lock according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken from FIG. 3 is a line diagram showing the state of the tumbler when the construction key device is activated, FIG. 4 is a front view of the first release tumbler, FIG. 5 is a cross-sectional view taken along FIG. ) is the cons tumbler shown in Figure 3.
A line diagram to explain the state of the tumbler when the construction key is inserted into the lock, Figure 7 is a sectional view showing the operation of the release tumbler when the construction key is inserted and the lock is unlocked, and Figure 8 is a diagram to explain the state of the tumbler when the construction key is inserted into the lock. Figure 3 is a diagram similar to Figure 6 showing the state of the tumbler when a duplicate key is inserted into the cons tumbler lock, and Figure 9 is a diagram showing the state of the unlocked tumbler when a duplicate key is inserted and unlocked. The 10th figure is a sectional view showing the operation, and the 10th figure is a sectional view similar to that shown in Figure 2, showing the state in which the construction key device is released. FIG. 12 is a diagram showing the state of the tumbler when the construction key is inserted into the cons tumbler lock shown in FIG. DESCRIPTION OF SYMBOLS 1...Outer cylinder, 2...Tumbler locking groove, 3...Inner cylinder, 4...Partition plate, 5...Drilled hole, 6...Slot, 7...Tumbler 18...Key hole, 9...Bin, 1]...Compression coil spring, 12...Cons d
-116...Engagement e, 17...First release tumbler -117m...Slope cam, 17b...Key insertion hole, 1
7e...Cam hole, 17d...Slanted edge, 18...
Second solution patent applicant: Miwa Lock Industry Co., Ltd.
Figure 6r 7 Figure 8 7 Figure 10

Claims (1)

[Claims] An outer cylinder having a tumbler locking groove formed along the generatrix on its inner circumferential surface, which is rotatably fitted to the outer cylinder, and is horizontally polished in the direction of the center axis while maintaining a constant interval. In addition to providing multiple partition plates,
It has an inner cylinder with a drilled hole passing through the central axis, and the groove slots formed between the partition plates of this inner tube can swing in the width direction of the key inserted into the drilled hole. Guided by
A tumbler that is biased in the direction of engagement in the tumbler locking groove is inserted, and a key hole of a size that can surround the drilled hole is formed in the center of the tumbler at a different size. The opening edge of the key hole is engaged with the side of the duplicate key inserted into the drilled hole, and aligned with the sheer line at the edge of each tumbler; the side edge of the tumbler; A conspar facing the conspar is provided so as to be movable in the thickness direction of the weight, and a retaining portion capable of engaging with the conspar is formed on the side edge of a plurality of selected tumblers facing the conspar, When the construction key device is activated, the conspar is placed in a position close to the drilled hole and engages with the tumblers, and the selected group of tumblers is
They are locked in a position where their edges align with the shear line,
This makes it possible to conveniently use a construction key specially designed for construction by cutting out the side edge of the part facing the conspar when it is inserted into the drilled hole, and attaching an inclined cam at one end to at least one slot facing the conspar. an opening that is formed and guided so as to be swingable in the same direction as the tumbler, is biased in a direction in which the slanted cam engages with the tumbler locking groove, and does not interfere with the drilled hole in any swinging position. A first release tumbler having a key insertion hole having a key insertion hole and a cam hole having an inclined edge that is spaced apart from the conical hole as it approaches the inclined cam, and a connecting member that engages with the cam hole on one surface are integrated. A second release tumbler protruding from the inner cylinder is inserted so as to overlap with the second release tumbler, so that when the inner cylinder rotates, the first release tumbler is pushed inward by the action of the inclined cam, and the connecting member is inserted into the cam hole. In the locked state where the sloped edge of the first release tumbler is engaged with the part closest to the needle hole, and the slope cam of the first release tumbler is engaged with the tumbler locking groove of the outer cylinder, the key width direction of the needle hole The second release tumbler is formed with a regulating edge that approaches the opening edge on the slope cam side from the outside, and when the cylinder is rotated using the construction key, the first and second release tumblers are integrated into one body. When rotating the cylinder using a duplicate key that is swung and has a full width on the part facing these release tumblers, the side edge of the duplicate key should be brought into contact with the regulating edge of the second release tumbler, and the hammer should be rotated. Move in the width direction for one interval, and then move the
The wedge action of the inclined edge of the cam hole caused by the movement of the release tumbler moves the second release tumbler in the direction away from the needle hole, and the second release tumbler moves the consoles to the selected position. A tumbler lock with a construction key device, characterized in that the construction key device is released by retracting the tumbler lock from a locking position with a group of tumblers and restoring the selected group of tumblers to an operating state.