JP3101678B2 - Pin tumbler tablets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cylinder lock suitable for use with a construction master key, which is required for construction, management, and delivery of a condominium, for example. Things.

<Prior Art> Various lock devices have been used to invalidate a key conventionally used during construction work with the completion of a building.

The simplest idea is to replace all locks used during construction work with new ones when handing over the building, and all keys used by workers will be invalidated,
You will not be able to operate the keys of the building after delivery.

However, in such a method, since the replacement of the lock is required, the cost of the lock and the trouble of attaching and detaching the lock are all doubled, which is not economical.

Therefore, a part of the lock to be used after delivery of the building is processed, for example, in the case of a pin tumbler lock, an arbitrary set of pins and a driver are placed in a non-operation state, and the remaining operation state is maintained during construction work. Uses a key that can be locked and unlocked with only a set of pins and a screwdriver. When a building is delivered, the set of pins and a screwdriver that had been inactive is restored to an active state, and all sets of pins and drivers can be operated thereafter. By making only the key available, all keys used during construction work were revoked.

Such an example is shown in Japanese Utility Model Application No. Sho 42-30072, but in this type of lock, the driver is housed in a sliding hole formed in the outer cylinder, and the driver operates the inner cylinder. An obstacle is placed at the opening of the outer cylinder sliding hole so that it does not descend to the sliding hole, and the pin and driver set are deactivated, and only the remaining operating pin and driver set is used. Keys corresponding to those are created and locked and unlocked.

After completing the construction work and before handing over the building, use a special key to remove the obstacles, remove the obstacles to the outside of the lock cylinder, return all the pins and the screwdriver set to the operating state, and thereafter Will prevent the keys used during construction work from being used, thus ensuring security in the future.

This kind of lock has been designed based on the above idea, though there are some differences in the specific configuration.

<Problems to be Solved by the Invention> In the above-mentioned conventional type key, the function of the key that can be used during the construction work is extremely poor because the number of sets of pins and drivers that can be used during the construction work is small. It has disadvantages that must be considered.

In addition, a specially prepared key must be used to return the set of the pin and the driver in the non-operation state to the operation state.

In addition, the key ridges of the specially shaped key must be the same as those used during the construction operation.

In addition, the pin and the driver can be returned from the inactive state to the active state only once, and the key corresponding to the lock can be changed only once during construction and delivery.

Considering recent condominiums and condominiums, the first key used by the work manager is needed during construction work, and the first contractor used by the management company to take over the building at the time of completion is commissioned by the sales company. A second key is required, and a third key is needed for the last resident to use.

In other words, three types of keys must be used for one key, and when the second key is used, the first key must be completely unusable. When the third key is used, both the second key and the first key must be completely unusable.

Further, from the viewpoint of usability, when the second key is inserted into the lock and turned, the lock is changed to fit only the second key, and similarly, the third key is inserted and turned into the lock. Then the lock needs to change to fit only the third key.

At present, there is no cylinder lock that can be used with such a construction key corresponding to the reality.

<Means for Solving the Problem> As described above, an obstacle that partially stops the operation of the driver is accepted as a basic means for solving the problem. However, when it is no longer necessary to use a specially shaped key and take it out of the lock, it is considered inconvenient in various respects. Just move to
Instead of being taken out of the lock cylinder, it will be housed in an appropriate place inside.

Also, in order to ensure a sufficient key difference and lock security when any of the first to third keys is used, it is disclosed in, for example, Japanese Patent No. 1320050 (Japanese Patent Publication No. 60-39837). We will use a lock with multiple rows of pins and a screwdriver.

A plurality of sets of pins and a driver are arranged in a line, and a driver is accommodated in a sliding hole formed in the outer cylinder under the action of a spring, and a pin is accommodated in a sliding hole of the inner cylinder. A holding rod is interposed between the pins and the driver over the entire length of the row, and the holding rod is housed in a groove formed so as to pass through the sliding holes of the inner cylinder and the outer cylinder. Each of these grooves is formed so that one surface thereof opens to the boundary surface between the inner cylinder and the outer cylinder.

Further, a groove capable of accommodating the holding rod is formed in a part of the outer peripheral surface of the inner cylinder so that one surface thereof is also opened to the boundary surface between the inner cylinder and the outer cylinder.

The depth of the grooves formed at these three locations is set to be substantially equal to the thickness of the holding rod, and one surface of the holding rod housed in the groove is slightly inside the boundary surface.

As the first key, a key in which all the key ridges are deepest is used so that the holding rod thus installed is always in the groove (resident groove) of the inner cylinder. Then, the holding rod is always accommodated in the resident groove of the inner cylinder, and the upper surface of the holding rod coincides with the outer peripheral surface (boundary surface) of the inner cylinder, so that the inner cylinder can be rotated. In this case, by using a lock having a plurality of rows of pins and a driver, one row of pins and a driver are placed in a non-operational state by a holding rod, and the other rows are used in the same manner as a normal pin tumbler lock.

When exchanging a key, a key is inserted into the inner cylinder so that the upper end of the pin in the non-operating state reaches the boundary surface between the inner cylinder and the outer cylinder. As a result, a row of pins is pushed up in the sliding hole of the inner cylinder, and the upper end thereof is aligned with the boundary surface, so that the holding rod moves from the groove (resident groove) of the inner cylinder to the groove (moving groove) of the outer cylinder. This will allow the inner cylinder to rotate.

When the inner cylinder is rotated with the holding rod housed in the movement groove,
When the groove (storage groove) formed on the outer peripheral surface of the inner cylinder is below the groove (moving groove) of the outer cylinder irrespective of the sliding hole, the holding rod is acted on by the action of the spring pressing the driver. , Is pushed out of the movement groove into the storage groove, and the lower end of the driver is located at the boundary surface between the inner cylinder and the outer cylinder.

Once the holding rod is dropped from the moving groove into the storage groove, the holding rod does not affect the operation of the key, and the key is inserted so that the contact surface between the pin and the driver is aligned with the boundary surface between the inner cylinder and the outer cylinder, and the lock is released. Locks can be made. And from then on, the lock will only fit the new key.

If such a structure of the holding rod and the groove is prepared in two places in one lock, a cylinder lock in which the key can be changed twice can be obtained.

<Operation> According to the present invention, the pin tumbler lock is changed to be adapted to only the key by simply inserting and rotating the key at each stage prepared in advance. Becomes unavailable, and the construction master key system can be used effectively.

<Example> A specific example will be described with reference to the drawings.

FIGS. 1 to 3 are cross-sectional views of a pin tumbler lock having five rows of pins and a screwdriver, in which two sets of key exchange structures are incorporated. FIG. 1 is used during construction work. Fig. 2 shows a state in which the key conforms to the construction master key, Fig. 2 shows a state in which it conforms to the dedicated management key after the first key exchange, and Fig. 3 shows a state in which it conforms only to the key of the resident who has completed the second key exchange. It is shown.

FIG. 4 is a sectional view showing a state in which all parts other than the inner cylinder and the outer cylinder have been removed from the drawings of FIGS. 1 to 3.

The state of drilling of the inner cylinder and the outer cylinder will be described with reference to FIG. 4. 1 is an outer cylinder, 2 is an inner cylinder, and 3 is a sliding hole for accommodating a driver D and a spring S drilled in the outer cylinder 1. Reference numeral 4 denotes a sliding hole for accommodating the pin P formed in the inner cylinder 2. Reference numerals 5 and 6 denote grooves formed on the outer peripheral surface of the inner cylinder 2. Reference numeral 5 denotes a groove formed through the sliding hole 4 of the inner cylinder 2.
A resident groove 6 which is opened at the boundary surface L of the outer cylinder 1 is a storage groove formed without contacting the sliding hole 3 or 4.

Reference numeral 7 denotes a moving groove which is bored through the sliding hole 3 of the outer cylinder 1 and opens at the boundary L between the outer cylinder 1 and the inner cylinder 2.

The resident groove 5, the storage groove 6, and the moving groove 7 are all of the same size and are parallel to each other.
Are open to the boundary surface L and face each other.

In FIG. 1, reference numeral 8 denotes a holding rod which is provided between the pin P and the driver D and inserted into the resident groove 5;
In the state shown in the figure, the spring S is acted on by the driver D and is housed in the resident groove 5 formed in the inner cylinder 2. The thickness of the holding rod 8 is equal to the depth of the resident groove 5, storage groove 6, and moving groove 7, and one surface of the holding rod 8 housed in these premises is maintained close to the boundary surface L.

In the drawing, the resident groove 5, the storage groove 6, the moving groove 7, and the holding rod 8 are provided two for each lock, and are designed so that the key can be exchanged twice.

FIG. 1 shows a lock suitable for a key used in a construction work. The holding rod 8 prevents the two rows of drivers D in the figure from descending. The lower end abuts on the holding rod 8, does not cross the boundary surface L between the outer cylinder 1 and the inner cylinder 2, and the pin P which is not affected by the spring S can move into the sliding hole 4 of the inner cylinder 2. It is installed in a state.

In the illustrated example, five rows of drivers D and pins P are installed on one lock as described above, but these rows are denoted by reference numerals I to V for convenience of explanation.

In other words, the lock to be used for the construction work shown in FIG.
Two rows of the five rows of pins P are inactive by the holding rod 8. The inactive rows in this case are rows II and V. (See Fig. 1) This lock has a thick plate-shaped key as shown in Fig. 5.
K1 is used, but for the keys used by the construction workers, the portions facing the pins P in the second and fifth rows are deeply drilled, and the insertion of the key K1 does not Has not been affected. Using this key K1, the key K1 pushes up the pins P in the I, III and IV rows respectively,
The contact surface between the pin P and the driver D is aligned with the boundary surface L between the outer cylinder 1 and the inner cylinder 2, but has no effect on the second and Vth rows, and the holding rod 8 is always connected to the inner cylinder 2. The upper surface of the holding rod 8 and the lower surface of the driver D abutting on the holding rod 8 are kept in the resident groove 5 and coincide with the boundary surface L between the outer cylinder 1 and the inner cylinder 2, and the inner cylinder 2 is rotated by the key K1. It is possible.

First key exchange (Exchange of construction worker key K1 to manager key K2) To make the key K2 usable and at the same time invalidate the key K1 thereafter, the following operation Perform

The key K2 has a structure that can operate the pins P in the I, II, III, and IV rows, and only the portion corresponding to the V row is deep so as not to affect only the pins P in the V row. Has been drilled. The notch of the key K2 corresponding to the pin P in the second row is
When the holding rods 8 installed in the II row are removed,
The contact surface between the row of pins P and the driver D is the outer cylinder 1 and the inner cylinder 2
It is engraved so as to be located at the boundary surface L of.

When this key K2 is inserted into the lock shown in FIG. 1, the notch of the key K2 in the V-th row is deep as described above, so that the key K2 affects the pin P and the holding rod 8 in the V-th row. In other words, the pins P in the V-th row operate in exactly the same manner as described in the previous section.

Regarding the second row, as in the other three rows, since the notch of the key K2 aligns the upper end of the pin P with the boundary surface between the outer cylinder 1 and the inner cylinder 2, it was in the resident groove 5 of the inner cylinder 2. The holding rod 8 is pushed up by the upper end of the pins P in the second row, and is moved into the moving groove 7 of the outer cylinder 1. This state is shown in FIG.

When the inner cylinder 2 is rotated by the key K2 from the state shown in FIG. 6, the inner cylinder 2 is rotated while the holding rods 8 in the second row are housed in the moving groove 6 of the outer cylinder 1, and the holding rod 8 continues to contact the outer peripheral surface of the inner cylinder 2.

Therefore, when the inner cylinder 2 is rotated by an appropriate angle and the storage groove 6 of the inner cylinder 2 is positioned below the movement groove 7 of the outer cylinder 1, the movement groove 7
The inner holding rod 8 is pressed by the driver D under the action of the spring S, and is moved from the moving groove 7 of the outer cylinder 1 to the storage groove 6 of the inner cylinder 2. In this case, since the depth of the storage groove 6 is equal to the thickness of the holding rod 8, the lower end of the driver D in contact with the holding rod 8
The boundary surface L between the outer cylinder 1 and the inner cylinder 2 is accurately aligned.

As described above, once the holding rod 8 is moved from the moving groove 7 into the storage groove 6, the holding rod 8 is subsequently stored in the storage groove 6 of the inner cylinder 2, which affects the function of the lock. Will not give. Therefore, the operation of the lock is to push up the pins P in the I, II, III, and IV rows by an appropriate amount with the key K2,
The upper end of the inner cylinder 2 and the lower end of the driver D are aligned with the boundary surface L between the inner and outer cylinders, and for the Vth row, the space between the upper surface of the holding rod 8 and the lower end of the driver D is aligned with the boundary surface L. Is performed.

Once such an operation is performed, thereafter, the lock can be unlocked and unlocked only by the key K2, and the key K1 used during construction work cannot be used at all. Further, the internal state of the lock at the locking position in that situation is as shown in FIG.

Second key exchange (administrator key K2 to resident key K3
This exchange procedure is the same as that shown in the previous section, except that a key K3 in which the notch corresponding to the pin P in the V-th row is appropriately set is used. The transfer is completed by moving the holding rod 8 from the groove 2 resident groove 5 to the second accommodation groove 6 of the inner cylinder 2.

By this exchange, the holding rods 8 in the Vth row as well as the holding rods 8 in the IIth row do not affect the function of the lock, so that the use of the administrator's key K2 becomes impossible and only the resident's key K3 is used. Is the only usable key.

The internal state of the lock after the exchange from the key K2 to the key K3 is as shown in FIG. 3, the starting state of the key exchange is shown in FIG. The state of being housed in the groove 6 is shown in FIG.

As described above, according to the present invention, one lock can be used for the construction stage, the management stage, and the living stage without performing processing such as disassembly and assembly of the lock, and all the keys used in all stages are used. Can be disabled.

<Other Embodiments> The above is a case where the present invention is applied to a plurality of rows of pins. However, even in a general cylinder lock having only one row of pins, if a plurality of pins are used. For example, key exchange can be performed by a similar method.

For example, FIG. 9 and FIG.
In the case of a cylinder lock as shown in the figure, the pins are divided into three groups, the number pins are used for construction work, the number pins are used for management, and the number pins are used for living, It is possible to obtain a pin tumbler tablet in which the key can be exchanged twice.

In this case, the key used in this case is a construction work key (K1) where only the number pin can be operated, and FIG. 11 (B) is a management key where the number pin can be operated. Key (K2), and FIG. 11 (C) is a key (K3) for the resident who can operate all the pins from number to number. By moving the holding rod 8 from the resident groove 5 to the storage groove 6 via the moving groove 7 by using, the function as a lock is somewhat sacrificed, but the same result as that of the first embodiment is obtained. Can be done.

<Effects of the present invention> As described above, the present invention can be applied to one lock according to the time progress of construction-management-habitation without reassigning pins or disassembling the lock which is generally performed. Each time a new key is inserted and the necessary inner cylinder is rotated, the internal mechanism of the lock can be changed so as to be compatible only with the new key. Has the effect of maintaining a high level.

[Brief description of the drawings]

FIGS. 1 to 8 are cross-sectional views of the lock cylinder according to the first embodiment of the present invention, FIGS. 9 and 10 are cross-sectional views of the second embodiment, and FIGS. 11 (A) and 11 (B). (C) is a side view of three types of keys used in the second embodiment. 1 ... outer cylinder, 2 ... inner cylinder, 3, 4 ... sliding hole, 5 ... resident groove, 6 ... storage groove, 7 ... moving groove, 8 ... holding rod, L ...
… The boundary surface between the inner and outer cylinders, P …… pins, D …… drivers,
S ... Spring, K ... Key.

Claims (1)

(57) [Claims] 1. A driver under the action of a spring in a sliding hole communicating between an inner cylinder and an outer cylinder, one end of which contacts the driver and the other end projects into a keyhole formed in the inner cylinder. A pin, a holding rod interposed between the driver and the pin so as to abut both of them, and a holding rod penetrating through the sliding hole and in contact with a boundary surface between the inner cylinder and the outer cylinder toward the inner cylinder. A holding rod resident groove provided, a holding rod moving groove penetrating through the sliding hole and in contact with a boundary surface between the inner cylinder and the outer cylinder, and being drilled on the outer cylinder side; and the inner cylinder and the outer cylinder. And a holding rod receiving groove formed in the inner cylinder side in contact with the boundary surface of the cylinder, and a row formed by a plurality of sets of sliding holes, springs, drivers and pins for one lock. Five rows are installed, and the holding rod, holding rod resident groove, holding rod moving groove and holding rod accommodation groove are respectively Cylinder lock, characterized in that installed by the.