JP2006046008A - Key used for both new model lock and old model lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify carrying management of a key by allowing the unlocking operation of a new model lock and an old model lock by a single combination key when the new model lock and the old model lock coexist. <P>SOLUTION: The key is provided with a cross section insertable in a keyhole of a rotating inner cylinder of either of the coexisting new model lock and old model lock. A keycode part for the old model lock for driving an internal lock mechanism of the old model lock is disposed on one side face, and a keycode part for the new model lock for driving an internal lock mechanism of the new model lock is disposed on another side face. A movable body forming the keycode part for the new lock is formed to hold a forming portion of the keycode part for the new model lock in a projecting position from the side face when inserted in the keyhole of the new model lock and to retreat the whole body into the cross section from the side face when inserted in the keyhole of the old model lock. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a key structure in which a new lock and an old lock can be unlocked with a single key in a management system for a device group in which the new lock and the old lock coexist.

In a management system with a large number of devices to be managed, if the management locks attached to all devices cannot be updated at once due to budgetary measures on the management subject side, a certain period of time Will coexist with the old and new locks.
In such a case, when dispatching a worker to the site for equipment maintenance management, the manager in charge determines whether the management lock of the equipment installed at the dispatch site is a new type lock or an old type lock. It is necessary to check carefully in advance, and the work procedure is complicated.

The present invention proposes a dual-purpose key that can be applied to both a new type lock and an old type lock. However, the technical development related to the conventional key selects a special shape of the key code forming part. In addition, attention has been focused exclusively on improving crime prevention performance by adding a baffle member to the picking tool (see, for example, Patent Documents 1 and 2). Do not know.

Japanese Patent No. 3435138 Japanese Patent No. 3380496 In order to solve this problem (see Patent Document 2).

An object of the present invention is to provide a dual-purpose key that can be applied to both an old lock and a new lock without requiring a special additional operation.

The main feature of the present invention is that it has a cross section that can be inserted into the keyhole of any rotating inner cylinder of a new lock and an old lock that coexist, and an old type that drives the internal lock mechanism of the old lock on one side. A movable body in which a key code portion for a lock is arranged, a key code portion for a new lock that drives an internal lock mechanism of the new lock is arranged on another side surface, and the key code portion for the new lock is formed When inserted into the keyhole of the new lock, the formation part of the key code part for the new lock is held at a position protruding from the side surface, and when inserted into the keyhole of the old lock, the whole is crossed from the side surface. It is to be retreated in the plane.

In the present invention, the cross section of the key is set so that it can be inserted into the key hole of either the new type lock or the old type lock, and the key code part for the old type lock is arranged on one side of the key, while A new lock key code portion is arranged on one side surface, and a movable body formed with the new lock key code portion is arranged so as to be able to appear and disappear from the side surface. That is, when the key is inserted into the keyhole of the new lock, the formation part of the key code portion for the new lock is held at a position protruding from the side surface, so that the internal lock mechanism of the new lock is the key for the new lock. While being accurately driven to the unlocking position by the cord part, when inserted into the keyhole of the old lock, the entire key including the formation part of the key code part for the new lock is retracted into the cross section from the side surface. Therefore, the key code part for the new lock is invalidated, and only the key code part for the old lock placed on another side functions effectively, and the internal lock mechanism of the old lock is driven accurately to the unlock position. The

As described above, since the key of the present invention is a key that is used immediately for the new lock and the old lock without requiring any special addition operation, in the device management system in which there are a large number of device groups to be managed. However, the person in charge of management only needs to give this key to the worker. It is not necessary to confirm in advance whether the management lock of the equipment installed at the individual dispatch site is a new type lock or an old type lock, and the work procedure is simplified.

If the key body part and the key code part forming body for the new lock are made of a metal material or engineering plastic, it becomes strong against mechanical hitting and distortion during use.

In the dual-purpose key K1 of the embodiment shown in FIG. 1, a mountain-shaped old lock key code portion 2 is provided in the longitudinal direction on one side surface 1a on the short side of the substantially rectangular cross section of the key body 1. The key body 1 is integrally formed and processed. A rectangular guide slot 3 is formed in the length direction on the other side surface 1b on the short side of the substantially rectangular cross section of the key body 1. The metal plate forming body 4 accommodated in the guide slot 3 is formed with a mountain-shaped new key code portion 5 for locking in the length direction.

As shown in an enlarged view in FIG. 2, the formed body 4 protrudes from the side surface 1 b by two compression coil springs 6 inserted between the back surface of the formed body 4 and the inner bottom surface of the guide slot 3. So that the movement is energized. A restriction pin 8 fixed to the lock body 1 is inserted into the long hole 7 provided at both ends of the formed body 4, and the amount of protrusion of the formed body 4 from the guide slot 3 is equivalent to the new lock key code 5. Is limited to only projecting from the side surface 1b.
A cam slope 9 is formed at the front corner of the formed body 4, and the formed body 4 is pushed into the guide slot 3 by being pushed by the front edge of the keyhole.

As shown in FIG. 5, the key K2 exclusively used for the old lock A is integrally formed with the old lock key code portion 2 on one side 1a on the short side of the substantially rectangular cross section of the key body 1. It is. As apparent from the comparison between FIG. 1 and FIG. 2, the width dimension a2 of the key K1 of the present invention is larger than the width dimension a1 of the old lock key K2 by the dimension of the new lock key code part 5. .

As shown in FIG. 3, when the key K1 of the present invention is inserted into the key hole 11 of the rotary inner cylinder 10 of the old lock A, the formed body 4 including the new lock key code portion 5 is entirely formed as a guide slot. 3, and the front end surface is in contact with the inner surface of the fixed outer cylinder 12. The old lock key code part 2 pushes the inner end of the code pin 13 to drive the code pin 13 and the driver pin 14 toward the outer surface of the fixed outer cylinder 12 against the spring 15, and the code pin 13 and the driver pin 14. Are moved to the outer peripheral surface of the rotating inner cylinder 10.

As shown in FIG. 4, when the key K 1 of the present invention is inserted into the key hole 17 of the rotating inner cylinder 16 of the new lock B, the formed body 4 having the new lock key code portion 5 is biased by the spring 6. Thus, the new lock key code portion 5 is held in a state protruding from the side surface 1b. Therefore, the biasing spring 6 of the formed body 4 is set to be sufficiently stronger than the pin biasing spring 20.
The new lock key code portion 5 in the protruding state pushes the inner end of the code pin 18 to drive the code pin 18 and the driver pin 19 against the spring 20 in the direction of the outer surface of the fixed outer cylinder 21. The contact point of the driver pin 19 is moved to the outer peripheral surface of the rotating inner cylinder 16.

FIG. 6 shows a case where the key K2 for the old lock is inserted into the key hole 11 of the rotary inner cylinder 10 of the old lock A. The old lock key code portion 2 pushes the inner end of the code pin 13 and the code pin 13 The driver pin 14 is driven against the spring 15 in the direction of the outer surface of the fixed outer cylinder 12, and the contact point between the cord pin 13 and the driver pin 14 is moved to the outer peripheral surface of the rotating inner cylinder 10.
On the other hand, FIG. 7 shows a case where the key K2 for the old lock is inserted into the key hole 17 of the rotating inner cylinder 16 of the new lock B, and the code pin 18 is not pushed at all by the key K2. The contact point between the pin 18 and the driver pin 19 does not move to the outer peripheral surface of the rotating inner cylinder 16. Since the inner end portion of the driver pin 19 remains in the pin hole of the rotating inner cylinder 16, the locking of the rotating inner cylinder 16 with respect to the fixed outer cylinder 21 is not released.

As described above, the key K2 used in the old lock A cannot be inserted into the key hole 17 of the new lock B, or even if inserted, the code pin 18 cannot be driven to the unlocked position. Even if the old key K2 is not collected separately, the risk that the new lock B will be unlocked without permission by the person in charge of management can be surely eliminated.

In the key K1 of the present invention, the new lock key code portion 5 is added in a form protruding from the cross-sectional contour of the key body 1, so that the new lock key code portion is arranged from the cross-sectional contour of the key body. Compared to the case of adding indents, it is stronger against unauthorized duplication of the key.
In addition, the installation site | part of the key code part formation body for new type | mold locks is not limited to the said side 1b, It can also form in the side surface of the long side of a substantially rectangular cross section. Moreover, a curved surface part can be provided in the cross section of a key main body, or the whole cross section of a key main body can also be formed in circular shape or an ellipse shape. The internal lock mechanism is not limited to the pin tumbler lock mechanism, and a distractor lock mechanism can also be used.

It is a perspective view of the key which concerns on one Example of this invention. It is a principal part longitudinal cross-sectional view of the key of FIG. It is sectional drawing when the key of FIG. 1 is inserted in an old model lock. It is sectional drawing when the key of FIG. 1 is inserted in a new type lock. It is a perspective view of the key of an old model lock. It is sectional drawing when the key of FIG. 5 is inserted in an old model lock. It is sectional drawing when the key of FIG. 5 is inserted in a new type lock.

Explanation of symbols

K1 Key K2 of the present invention Key 1 of the old lock 1 Key body 1a Side 1b of the key body Another side 2 Key code part 3 for the old lock 3 Guide slot 4 Forming body 5 Key code 6 for the new lock Forming spring 7 Long hole 8 Restriction pin 9 Cam slope portion 10 Rotating inner cylinder 11 of the old type lock Key hole 12 Fixed outer cylinder 13 Cord pin 14 Driver pin 15 Pin biasing spring 16 Rotating inner cylinder 17 of the new type lock Key hole 18 Code pin 19 Driver Pin 20 Pin biasing spring 21 Fixed outer cylinder

Claims (1)

It has a cross-section that can be inserted into the keyhole of the rotating inner cylinder of both the new and old locks, and the key code for the old lock that drives the internal lock mechanism of the old lock is placed on one side. The key code part for a new lock for driving the internal lock mechanism of the new lock is arranged on another side surface, and the movable body formed with the key code part for the new lock is a key hole of the new lock. When inserted into the key, the forming portion of the key code portion for the new lock is held at a position protruding from the side surface, and when inserted into the key hole of the old lock, the whole is retracted into the cross section from the side surface. A key that is used for both new and old locks.

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