KR820000352B1 - Key changeable lock - Google Patents

Abstract

A double key changeable safety deposit lock includes a movable bolt and associated bolt plate including cam sufaces to be engated and moved between open and closed positions by turning renter and guard keys(40,41) in the lock, a plurality of gated tumbler renter key levers to be engaged by the renter key, a plurality of guard tumbler guard key levers to be engaged by the guard key, each of the levers being moved to align their respective gates(121) upon manipulation of the two keys to allow opening of the lock.

Description

Key exchangeable lock

1 is a perspective view showing a selected storage key and a user key as one preferred embodiment of a key changeable lock according to the present invention;

2 is a perspective view of an exchange key used in the embodiment shown in FIG.

3 is a cross-sectional view taken along line III-III of FIG.

4 is a front view with a part of the front surface of the lock seen from the line IV-IV of FIG. 3;

FIG. 5 is a closed state diagram of the lock of FIG. 4 showing an exemplary tumbler lever as dashed line. FIG.

6 is a sectional view of essential parts of the lock of FIG. 5 showing that the storage key is rotated to the revised position.

7 is an operation of the lock of FIG. 5 showing the state in which the user's key and the storage key are moved to the revised position and the clasp is in the revised position.

8 is a sectional view of the main part of the lock of FIG. 7 showing that the storage key is removed and an exchange key is inserted.

9 is an operation of the lock of FIG. 7 indicating that the exchange key is rotated fully clockwise and fully entered to the latch and exchange key position.

10 is an operation of the lock of FIG. 9 showing that the point member is rotated to the lever release position from which the lever means is released from the point member.

FIG. 11 shows the operation of the lock in FIG. 10 showing that the user key has been completely rotated in the clockwise direction, taken out, and replaced with another user key.

FIG. 12 is an operational view of the lock of FIG. 11 showing rotation of new user keys relative to the associated tumbler and setting them to a new combination.

13 shows a state before the movement of the clasp for inserting a new storage key and rotating it counterclockwise with respect to the associated lever, for the first time by rotating the point member to engage with the lever means of the various levers. The working degree of the lock of the twelfth degree.

FIG. 14 is an operational view of the lock of FIG. 13 indicating that the user's key has been rotated to the locked position of the latch and the latch has been moved to the locked position and the storage key is ready to be rotated to the unlocked position in a clockwise direction.

15 is a sectional view taken along the line XV-XV in FIG.

16 is a cross-sectional view taken along line XVI-XVI in FIG.

17 is a cross-sectional view taken along the line XVII-XVII of FIG.

18 is a cross-sectional view taken along line XVIII-XVIII of FIG.

19 is an exploded perspective view of a partial cross-sectional view of the lock in FIGS. 1 to 18.

The present invention generally relates to a replaceable lock, in particular having one or more keys for operating the lock between its unlocked position and closed position, so that the internal structure of the lock can use a different key. It relates to a lock which can be operated selectively.

To date, various types of lockable key exchanges have been developed to replace keys with new ones in order to maintain safety in case of lost or stolen keys.However, these locks have their associated internal tumbler levers locked and locked. Use one key to rotate between positions.

An example is shown in US Patent No. 1693731, where the clasp plate is fixed to the bolt. Tumbler levers with multiple gates are provided on the fixed guess, which are moved by the key tumblers so that the gates are aligned with the clasps described above.

The key can be exchanged by releasing the clasp from the clasp and, in the clasp release relationship, by engaging a new key in the lock to engage the fixed axis tumbler, and also by reattaching the tumbler lever to the clasp to secure the engagement.

Another example of prior art is U.S. Patent No. 1268900, where one keyable lock is disclosed with respect to a number of gated levers.

The lever is gated at both ends and rotated around the fixed side in the lock, and is alternately engaged with the main latch and the auxiliary latch, that is, the movable latch member and the auxiliary latch member.

The structure of the lock according to the prior art, including those described for reference, is not easy to install a double replaceable key that can be exchanged for both the user key and the storage key, which is desirable for a modern safe lock. It is not conceivable to provide a sufficient structure and operation method for a key that can be exchanged.

Therefore, the main object of the present invention is to easily and economically configure and assemble the lock, not only to handle it easily, but also to simply change the key, and to operate the lock, the lock is reliable and reliable key exchange. In providing a possible lock.

It is also an object of the present invention to prepare two interchangeable keys for operating the lock, and also to lock the internal lock mechanism is simple, and to change the coupling required for both keys to open the lock can be operated with high reliability. In providing a lock.

Generally speaking, the replaceable lock in the present invention operates a latch only when a plurality of gated tumbler levers and a tumbler lever are positioned at a preset adjustment position according to the operation of a selected key in the lock. Device.

One or more levers are equipped with a means for providing a number of individually selectable pivots in which the associated levers are pivoted about them, and thus each spindle of the levers to provide different combinations of the lever movements needed to unlock the lock. Can be changed.

When engaged with one selectable axis, a fulcrum means is provided to engage the axis of the lever to limit the movement of each lever around that axis, and the point means remain unlocked. If present, the lever may be released and moved to provide a new form of combination of levers before re-engagement by the normal locking operation of the exchanged key.

More specifically, the present invention relates to a single operation operated in connection with a first set of user key tumbler levers to be engaged by a user key and a second set of storage key tumbler levers to be engaged by a storage key. It is intended to provide a dual key exchangeable safety lock containing bolts.

Each of the aforementioned levers is a plurality of individually selectable axes that change the pivot axis of each lever to provide different combinations of lever movements required to align the associated gates by the two associated keys as described above. It has an axis means for providing the key.

The release point device, or the axis selector, is installed to normally engage with any one of the axis of the levers in order to keep the two sets of levers in a fixed fixed axis of rotation during the opening and closing operation. It is installed so that its pivot axis can be freed to adapt replaced or exchanged storage keys or user keys when attempting to readjust.

A more complete understanding of the invention and the invention will be apparent from the accompanying drawings and from the detailed description of exemplary embodiments, with regard to the technical improvement of the conventional key changeable locks and the above-described objects to achieve them.

Preferred exemplary embodiments of the replaceable lock according to the present invention will be described in detail first with reference to FIGS. 1, 3, 4 and 19. This preferred embodiment includes a double key exchangeable safety lock, which is generally designated as 10, and the lock may also be provided as a single replaceable lock in some aspects of the invention. Exemplary dual interchangeable safety locks, generally designated by the number 10, include the rear wall 11, the front wall 12 (i), the bottom wall 13 (see FIG. 4), and the hole 15. It consists of a housing or a casing which holds the retaining clasp 14 and the closed end 16.

The conventional front plate 17 is fixed by a fastener, and preferably, a mounting bolt 18 (for penetrating through the bolt holes 22, 23, 24, 25 installed in the front plate 17) ( 19) 20 and 21 are fastened to the screw holes of the rear wall such as the screw holes 24 '(FIG. 9) to preserve the front plate 17 in the recess 26 formed around the opening of the casing.

Further, as in the prior art, key bosses 27 and 28 each having key guide grooves 29, 30 and 31 and 32, which face each other, are provided. Also in FIG. 1, 10 denotes a double lock designed to accept a user key 40 and a storage key 41.

Particularly, the intention of the present invention is that the lock adapts to both the user key and the storage key even if they are exchanged. In addition, an exchange key 42 as shown in FIG. 2 is used in the key exchange process as described later.

Here, each key holds the first upper projections 43, 44 and 45, respectively, and the storage key 41 has an additional stop projection or camp follower projection 46. As shown in FIG. The user key 40 is adapted to be housed in a conventional journaled key guide post installed in the front panel boss 27.

As best seen in FIGS. 3 and 19, the key guide post 50 is provided for accommodating the user key 40 in the key groove 51. As shown in FIG. The user key guide post 50 has a bottom bearing portion 52 which is adapted to fit the journal hole 34 at its lower end.

The guide post 50 is housed in the key guiding journal bearing 54, which bears the flat portion 53 of the post 50 so as to engage the post 50 so as not to rotate relative to the bearing 54. It has an internal hole ending in an internal non-circular part that is intended to coincide with. The journal bearing 54 is provided with a key groove 55, which is aligned with the key groove 51 of the post by fitting the flat portion 53 in the bearing 54 as appropriate.

The journal bearing 54 is provided with a recessed portion 56 surrounding the end face 57 to be fitted into the opening of the boss 27 as in the related art. Near the lower end of the post 50, a guide post cam 58 that engages with and engages a portion of the bar as described later is provided.

The storage 41 is intended to be inserted into the installed storage key guide post 60, and the post 60, as in the user key guide post 50, the key groove 61 and the bearing portion 62 of the base. It has a flat portion 63. The post 60 has a journal bearing having a cross section 67 corresponding to the key groove 65 and the recess 66 and the boss 28 as described with respect to the journal bearing 54 and the boss 27 ( 64).

In addition, the storage key post 60 is provided with a storage key post cam 68 near its lower end, and acts on a part of the clasp as described later.

In the lock of this embodiment, as shown in FIG. 19, the latching means composed of a cladding plate as indicated by 70 as a whole is provided with a clasp (70) extending from the shank portion 73 so as to be integrally formed with a clasp ( 72 consists of a body portion 71 is attached. The body portion 71 holds the cutouts 74, 75, 76 of the outer circumference to provide a clearance for the bolts described above.

As best seen in FIG. 19, clasp plates 77 and 78 protruding in the lateral direction of the body portion 71 cooperate with a tumbler lever to be described later to control the movement of the opening of the clasp plate. It is installed for

The clasp plate is provided with holes to provide a surface cooperating with the guide post cams 58 and 68. As best shown in FIG. 19, a user key cam hole 80 is provided in the main body portion 71, which has a closed cam surface 81 and a revised cam surface 82. As shown in FIG.

As is apparent in the art, when the guide post 50 of the user key is rotated, the cam 58 associated therewith is selectively engaged with the cam 81 and 82 surfaces according to the rotational direction of the post 50. In the center portion, a rectangular hole 85 is laid in order to insert a part of the point member 100 to be described later.

19, the cam hole 90 of the storage key which has the closed cam surface 91 and the revised cam surface 92 is installed in the main body 71, and each cam surface 91, The 92 is configured to cooperate with the guide post 60 and the cam 68 of the storage key as described below.

According to the present invention, a plurality of gated tumbler levers 110 and 120 are installed to be selectively and pivotally positioned with respect to the point means, and once a specific axis of each lever is selected to restrain the pivot axis of the lever. It is. Thus, the branching means, which is particularly tried in the present invention, includes the branching member 100, as best seen in FIGS. 18 and 19. The point member 100 has a bottom bearing 101 adapted to penetrate into the journal hole 36. On the point member 100, a stationary pin or stop shaft 102 accommodated in the journal hole 33 in the front plate 17 is provided.

As can be seen in FIG. 18, the point member 100 is pivotally mounted pivotally between the front face and the rear wall of the housing or casing of the lock. The point member 100 is also provided with a cam 103 protruding laterally, and the cam is seated in a cam groove 79 formed near the rectangular ball 85 in the main body 71 of the clasp plate. It is supposed to be. As can be seen from FIGS. 9, 10 and 18, the second cam portion 104 of the point member is placed in the rectangular hole 85, and the lever described later will be described in detail. When in the engaged position as shown in Figs. 18 and 18, the flat side portion 105 in contact with the upper surface of the hole 85 is retained.

In the following description, reference should be made to the axis of engagement ribs 106 and the return cam 107 of the lever provided in accordance with the size of the longitudinal direction of the point member 100.

As can be seen in FIG. 3, and as schematically shown in FIG. 19, the lock of the present invention is provided with a plurality of kate tumbler levers, which are represented as 110, 120 as a whole. In this embodiment, the tumbler lever 110 for user keys and the tumbler lever 120 for storage keys are comprised by seven pieces, respectively.

First, when looking at the tumbler lever for the user key, each lever is the same, and as can be seen best in FIG. 19, the user key tumbler lever is provided with an opening gate 111 at the front end thereof. In the vicinity of the tip of the gate, when the latch is in the closed state as shown in FIG. 4, the latch stop 112 is formed to contact the latch plate 77 of the latch plate.

Also, the tumbler lever 120 for the storage key has the same level of each lever, and as best seen in FIG. 19, they are provided with a gate 121 that is open inward at each free end thereof. As shown in FIG. 4, an inwardly latching stopper 122 is formed to engage with the clasp plate 78 of the claspplate 70 when the clasp is in the closed position.

In this embodiment, each gated tumbler lever is provided with an axis arrangement for providing a plurality of individually selectable axes to which the associated tumbler lever can pivot about it, as is specifically tried in the present invention. Each of these tumbler levers can be varied to provide a different combination of lever motions needed to unlock the lock.

As shown in Figs. 4 and 19, each of the tumbler levers for the user key has an arc hole 113, which is a tooth-like tooth having a plurality of teeth or a rock formed on its inner surface. Has a tooth 114.

The radius of curvature of the arc through hole 113 intersects with the associated gate 111 at its central portion, so that the lever is centered around the gate end while selecting one axis imparted by the tooth 114. It is desirable to be able to swing.

As shown in FIG. 4 and FIG. 19, the axis | shaft apparatus of the tumbler lever 120 for a storage key includes the arc-shaped axis through-hole 123 of each lever, and has the several tooth on the inner surface of the arc-like hole 123. As shown in FIG. Alternatively, toothed teeth 124 like a rack are formed.

The radius of curvature of the through hole 123 is preferably such that the radius of curvature of the through-hole 123 passes through substantially the center of the gate 121 as described above with respect to the tumbler lever for the key for the user customer. The tooth 114 providing the shaft is installed inside the through hole 113 with respect to the lever 110, and the tooth 124 is installed on the outside of the groove 123 with respect to the center of the lever 120. You should be careful about that.

Particularly attempted in the present invention, as best shown in Figs. 3 and 4, the user key tumbler lever 110 is provided in a horizontal array in the first set, and associated with each other. The arc hole 113 is mounted to the branch member 100 and the associated gate 111 is directed toward the front clasp plate 77 of the cladding plate.

Each of the levers 110 is integrally formed with a spring arm 115 for biasing the gate end so that the spring arm 115 integrally formed with the latch stop portion 112 is engaged with the clasp plate 77. In addition, each of the levers 110 of the first set is provided with a center tumbler hole 116 that provides a tumbler surface 117 to be engaged with the teeth of the user key 40. The second set of gated tumbler levers 120 are arranged in a horizontal arrangement, as best shown in FIGS. 3 and 4, to act in conjunction with the storage key 41, each of which has an arc through each other. 123 is a point member 100 penetrated, the associated gate 121 is rearward, close to the clasp plate 78, the associated clasp stop 122 of each lever has a rear edge of the clasp plate 78 It is supposed to be in contact.

Each of the levers 120 is provided with a spring arm 125 and a tumbler surface 127 which are integrally formed, and the tumbler surface 127 is provided with the teeth of the storage key when the storage key 41 is fitted to the lock. To engage. The individual sets 110 and 120 of the first and second sets are alternately overlapping one another, as best shown in FIG. 3, but they may be installed in different ways within the lock.

However, what is important to the present invention, however arranged, is in this embodiment the horizontal arrangement of their respective extraction devices provided by the teeth 114 and 124, so that the selected axis is further provided by the point member 100. In the embodiment, in particular, a set of opposing tumbler levers is provided in the lock so that the levers engage with the ribs 106 so that each lever can rotate about the selective rotation axis of each lever.

When the point member 100 is rotated at an appropriate time, as will be explained more fully in the lock operation description, each of the tumbler levers is released and the lower portion in FIG. 4 is caused by the biasing force of the associated spring arm. It is then ready to be reset to any desired combination by moving it into place and manipulating a new user key and storage key.

The operation of the lockable key exchange of the present invention will be described below.

FIG. 1-FIG. 4 show that it is in the locked state. In order to normally open a safety device such as a door of a safety deposit box, the user's key 40 and the storage key 41 are inserted into the key grooves 55 and 65 of the key posts 50 and 60, respectively.

When a further key is inserted, the key is tumbler ball 116 of two sets of tumbler levers 110 and 120 engaged with the latch plate 77 and 78 of the latch as shown in FIG. 126 is penetrated freely.

This lock state of the lock is shown in FIG. 5, where it is possible to more easily observe the cooperative relationship between the key posts 50, 60, the point member 100 and the latch plate 70. Typically, only a pair of tumbler levers are indicated by chain lines, and the remaining levers are omitted. The key inserted into the lock by the user key 40 and the storage key 41 is rotated clockwise to the unlocked position as shown in FIG.

The storage key 41 is first rotated from the position of FIG. 5 to the position of FIG. 7 in the clockwise direction to disengage the storage key post cam 68 from the cam face 91 so that the latch plate is moved from the position of FIG. 5 to the position of FIG. In other words, you should be able to enter from left to right. The latch plate is moved to the lock open position shown in FIG. 7 by rotating the user key 40 with respect to the cam face 82 in the clockwise direction of FIG.

At this time, since the latch plate is engaged with the storage key post cam 68, the latch plate cannot enter further than the position shown in FIG. 7, and the storage post has a stop protrusion or cam follower protrusion 46 installed on the storage key. It is held in the position of FIG. 7 as it enters in the cam groove 37 of the arc as shown in FIG. 6 and FIG.

The user keys and storage key are not released by the end flanges of the bosses 27 and 28 when they are in the open position shown in FIG. The lock can be returned to the closed lock position again by simply closing the safety door and turning the user key 40 and the storage key 41 counterclockwise to return to the fourth degree position.

In the closing operation with a key, the tumbler lever is rotated around the selected axis engaged with the point member 100, first aligning the gates with the clasp plates 77 and 78, respectively, as shown in FIG. This alignment is displaced so that the lock returns to the closed state as shown in FIG.

If the lock combination is changed to apply a new user key and a holder key, the lock opening operation described above is performed by inserting a replacement key 42 corresponding to the existing combination of the storage key tumbler instead of the storage key 41. . Since the exchange key 42 does not have a cam follower 46 as the storage key has, the key can be rotated past the lock opening position of FIG. 7 to the key replaceable position of FIG. As shown in FIGS. 8 and 17, the exchange key 42 has an end synchronizer 45 located in the keyway 61 of the post 60, but with the same cam groove 37 as in the case of the storage key. Do not have the projections engaged in). As can be seen from the comparison of FIG. 7 and FIG. 9, when the exchange key is rotated further clockwise, the related post cam 68 is moved in contact with the cam surface 92 of the latch plate to move the latch plate. Move to the fully in position as indicated in.

At this point of the lock operation, the user's key can be rotated freely again in the clockwise direction, but before the key is rotated to the extent that the key can be pulled out through the guide grooves 29 and 30 of the associated boss 27. Engage with the return cam 107.

As described above, when the latch plate is completely moved into the lock casing by operating the exchange key 42, the pivot device of the tumbler levers 110 and 120 associated with the branch member 100 can be manually rotated. The bottom bearing 101 of the point member is located in the journal hole 36 formed in the rear wall 11 of the casing.

At the end of the bottom bearing 101, a common groove or a hexagonal groove 130 is formed to access from the inside of the safety door equipped with a lock, and a point wrench 100 is usually inserted by inserting a wrench, an allen wrench or a suitable tool. It is possible to manually rotate from the position of FIG. 9 to the position of FIG. 10 in the clockwise direction.

When the point member is rotated as such, the associated tumbler levers are all released and are freely moved downward as shown in FIGS. 10 and 11 by the biasing force of the spring, respectively, as shown in FIG. It is moved to the fully released position.

The user key 40 can be manually rotated to the release position shown in FIG. 11, but if each lever is released at the position shown in FIG. 10, the user key 40 can be rotated to the release position by the biasing force of the lever 110. It is moved. In the manual rotation of the point member 100 from the inside of the safety door, the return cam 107 portion is in contact with the stop wall 108 formed on the body portion 71 of the cladding plate, so that rotation in the clockwise direction is limited. Note that

In this state, either or both of the user key 40 and the storage key 41 can be exchanged. Instead of the exchange key 42, a new exchange key 42 'can be inserted into the lock. This new exchange key has the same code as the new storage key for later locks.

At the same time a new user key 40 'can be inserted in place of the key 40. To reset the lock for these new keys, simply rotate the new user key 40 'to the vertical position as shown in FIG. 12. Each tumbler lever 110 associated with the new member has a new code with respect to the point member 100. Are automatically placed into relationship.

Next, as shown in FIG. 13, the new exchange key 42 'is rotated counterclockwise to engage with the storage tumbler lever 120, and the storage lever is connected to the code of the new replacement key 42'. Combination or adjustment is done.

As shown in FIG. 13, in this state, each tumbler lever is lifted by rotating the user key and storage key to the approximately vertical position of FIG. 13, but is still in a new engagement position by engagement with the point member 100. FIG. It is not preserved.

Turn the new exchange key 42 'to the fully upright position as shown in Figure 14, and rotate the lever member 100 counterclockwise so that the ribs 106 are respectively teeth 114, 124 of the lever. By engaging with the selected one of the shafts provided by the shaft, the re-engagement of the point member with the pivoting device of the tumbler lever for its user key and storage key, respectively, is automatic.

As can be seen by comparing FIG. 13 and FIG. 14, when the latch plate 70 moves from the position of FIG. 13 to the position of FIG. 14, that is, to the left of FIG. 13, the stop wall 108 of the latch plate is a point member. The point member 100 is rotated to the position of FIG. 14 in contact with the return cam 107 of and re-engages with the axis of the tumbler lever.

Moving the latch plate to the position shown in FIG. 14 is accomplished by rotating the user key 40 'completely from the counterclockwise position as shown in figure 14, wherein the associated postcam 58 is latched. It touches the closing cam surface 81 of the plate and moves the latch plate to the closing position as shown.

The exchange key can be rotated in the counterclockwise direction at this point, that is, in the release position.

Claims (1)

A key changeable lock having a latch and a plurality of gated tumbler levers and a device for operating the latches by operating a selectable key in the lock only when the tumbler lever is in a preset position, The lever is installed on the lever to provide a plurality of individually selectable pivots pivoted around him, thereby changing the pivot axis of each electric tumbler lever and providing a different combination of the lever movements. Includes a point device that engages with the lever's axis to limit the movement of the lever around the selectable axis when engaged with the axis, and can be released from the axis to select and engage another of the aforementioned axes; A lever on a lever can be used for the gate of a lever in relation to its radius of curvature. It is composed of a tooth-shaped rack formed on the inner surface of the intersecting arc hole, and the electric point device is a device for releasing and re-engaging the teeth of the shafting device which is mounted by mounting the point member in the arc hole which has been described. Key exchangeable lock, characterized in that the configuration.

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