JPS59134280A - Key lock - 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 first uses a change key to bend the tansira, returns the tansira to its original shape, and then stops the tansira from moving. This relates to a key lock that allows you to change the mark-combination that sets the lock by inserting and turning the key.

A common type lock according to the invention has at least one tangerine in the form of a lever mounted for rotation about a pivot when the tangere is engaged by the lift of a cut-out key. In order to retract the bolt and open the lock, the r-t or notch formed in the tangera moves together with the so-called "tooth bar" or dent on the bolt, aligning the tangerine with "<shi". must be turned by the key a precise angle around its axis. If a tangela date is out of alignment with the toothed rod or comb, the tangeler will prevent the bolt from retracting, and if all dates are in the aligned position they will fall out of alignment with the toothed rod or comb. Allows the receiving bolt to be retracted. In such locks, the ``shape'' of the key, or more precisely the ^ of each lift portion of the key, controls the rotational position of the tumbler by the key.

In other words, the shape of the key is controlled by the position in which the tancils are aligned. In order to set the lock to open with a particular key, or to set it with a different key, it is necessary to vary the degree of rotation to bring one or more tumblers into the date alignment position.

There is a mention of locks provided with a lever tumbler having a bendable or deformable portion that can be shaped to align with a particular key of the tumbler inside the lock. Such a lock belongs to the applicant's invention under 197
No. 3,727,439 entitled ``Modular Lock with Lever Tough Galley Having Bendable Portions,'' published April 7, 2006. In the case of the lock shown in this patent, the bendable tangera is fitted to a particular cut key by inserting the key into the lock and turning the key without turning the tumbler. The rotation moves the bendable portion of the tongue sill to a new position corresponding to the respective lift height of the actuation key used to perform the bend. These locks are particularly useful as safe deposit box locks, where the locks are made modular and can be easily set to a specific key during installation. 0 shows a lock with a lever tumbler having a bendable key-engaging portion. Before bending, the tumbler is positioned so that its r-) is in an aligned position to receive the bolt.
It is supported by a stop. The bendable part can be bent initially by means of an activation key. By keeping the tumbler unrotated and rotating the key while engaging the tumbler, the bendable portion will bend from its initial shape or position to a new or set shape due to the shape of the lift of the particular key that bends it. Moved. After the bendable part has been bent by the key, the second stop is actuated. The bending causes the first engagement surface of the tumbler to move and become inoperative.
The second stop engagement surface of the tumbler is then activated and the tumbler is restrained by the second stop in a misaligned position with respect to the bolt.

The lock described in Applicant's Patent No. 15,727.4'3'9 can once be set to cooperate with a particular key, but cannot thereafter be reset to another key with a lower lift. . Once the tumbler of this lock is bent into the distorted row position by a certain key lift, it cannot be easily bent to a different lift, regardless of the sieve height. However, depending on the field of use, it may be desirable to change the lock combination from one key to another. Such a feature is useful, for example, in setting a guard key for a safe deposit box lock. Guard keys cannot be changed on a daily basis, but can be changed from time to time, such as when a safe changes hands or when a group of safe deposit boxes moves to different locations. Thus, the provision of a bendable tumbler-type lock which not only responds to an initial setting, but also allows the lock to be subsequently reset to another key having a lift higher or lower than that of the key to which it was initially set. is desired.

Unlike Applicant's prior patents, the lock of the present invention can not only be set on the first actuating key, but also on other tumble lifters that have a lift that is higher or lower than the lift of the first key in which the lock is set. It can be reset later so that it is linked to the activation key. The present invention provides a device for re-bending the tumbler and setting it to a different key.

This change from one set is accomplished by first returning the tumbler to its initial (manufactured or neutral) color position or shape and then resetting it from the initial shape to the new shape with a different activation key. Once reset, the tumbler is returned to its original shape or bent again by the installation of a change key which acts on the tumbler in opposition to the bending effected by the activation key.

The actuation key engages the actuation key of the tumbler directly, allowing the bendable part of the tumbler to be bent to one side from its initial position and the change key to the opposite edge of the tumbler. Bend the moving kitanpura back to its initial shape. Importantly, the change key allows the tumbler to be bent past its initial shape, as described below.

A first stop in the lock is positioned to stop the tumbler in a rest position in which it is aligned with the bolt when the tumbler is in its initial configuration, so that when the tumbler is set the bolt is retracted and the tumbler is removed. can be retained. When the tumbler is set, this first stop is inactive and the second stop is active. The first stop becomes active again when the tumbler is bent back to its original shape. However, in order for the tumbler date to re-align with the bolt for reset, the tumbler must be bent far enough beyond its initial shape that it was initially engaged with the first stop to allow the tumbler to bend when the chezo key is removed. When the tumbler "springs back" to its original shape again and the date is in its rest position, it is aligned with the bolt again.

The first stop can be moved to allow such overbending. In a preferred embodiment, the actuating key post constitutes the first stop. This stop is ``removed'' by turning the activation key and positioning the relief on the post near the tumbler. The relief portion provides a space in which any excessive bending of the tumbler is accommodated and the tumbler springs back to its original shape.

Hereinafter, details of the present invention will be explained with reference to the accompanying drawings.

Although the improvements of the present invention can be used in many types of variable key locks, their widest utility is expected in locks for safe deposit boxes. Accordingly, preferred embodiments of the invention are described herein below primarily with respect to locks for such purposes.

Safe deposit boxes generally use two types of keys for operation. One key, called a guard key, is kept at the bank or other facility where the safe deposit box is located. That key must be used in conjunction with another customer key held by the customer. Banks cannot open safes with guard keys without using customer keys, and customers cannot open other safes.

The guard and customer key act on the guard and customer tumbler in the lock, respectively. Either the guard tumbler or the customer tumbler, or both, may be rekeyable. The mechanism for changing the guard key may be different from the mechanism for setting or changing the customer key, or the customer key may be non-replaceable. - The illustrated safe deposit box lock has one set of guard tumblers and one set of customer tumblers, and although the guard tumblers can be changed according to the present invention, the customer tumbler on the cylinder is not variable, and the above-mentioned patent of the applicant No. 6,727,439, to which reference is made for a more complete description of construction and operation. Alternatively, the customer tumbler may be variable in accordance with the present invention, or by other mechanisms, such as ``Variable key lock with tumbler having shiftable pivot seat 7'' filed on 16 December 1982. The applicant's pending patent No. 4
It may also be made variable by a mechanism such as that shown in No. 49,378, which is incorporated herein by reference.

FIG. 1 shows a safe deposit box facility having a plurality of lockable doors, each indicated at 1o. Each door has one side
1 is s! Ages are connected. Each door lock (first
On the left side (as viewed from the figure), there are two key holders 14 and 15. These receive customer and guard keys respectively for lock operation, the locks being mounted on the inside of the door and shown at 18 (see Figure 2). A guard key (hereinafter generally referred to as an "actuation key") activates the guard tumblers of all locks in the installation, but each arm requires a separate customer key to activate the customer tumblers. Both the customer and guard tumblers must be aligned before the bolt can be retracted.

As shown in FIG. 2 and FIGS. 4 to 6, the lock 18
is fastened to the inner surface of the safe door 1o by machine screws 19 and is housed in a two-part housing comprising a case 2o and a lid or cover plate 21. The lid 21 is connected to the door 1 from the two nostrils 14 and 15'a' covers.
The hole provided at 0 is disposed in contact with the inner surface of the door 10 so as to protrude from the surface of the locked door. The lift doors 14 and 15 receive customer keys 34 and guard keys 35, respectively, as seen in FIGS. 5 and 6.

Key post 24 (customer key request) and key post 25
(Receive the guard key) is the entrance 14°15 and the lock case 2
Both ends are rotatably supported between the holes 26 and 26 on the back of the 0.

Each key post 24,25 has an elongated shank portion 28 and a flared head 30 carried by the flange or rim of the riser 14,15. Therefore, each key post 24,25 can freely rotate and move axially within the bearing. As shown in FIGS. 4 to 6, the key post 24-25 is slotted as at 32 along its entire length to hold the customer key 34 and the guard key 35.
Accept each.

A tumbler pivot in the form of a post 38 is mounted between the lid 21 and the inner or back surface of the lock case 20 (second
See figure]. The posts 38 may be roll pins that are secured to holes 39a and 39b in the case and cover, respectively, to close the case and cover before the lock is secured to the rear 10 with screws 19.

In the illustrated embodiment, this post 38 serves as a pivot for both sets of tumblers.

Lock case 20 has an end opening through which bolt 41 extends. The bolt has a so-called bolt pin or tooth rod 4
2, and the extension (or locking) shown in Figures 2 and 4.
position and the retracted (or open) position of FIGS. 5 and 6. The bolt has an extension plate 47 located within the lock case 20 near the inner case wall and defining a hole or opening 43 therein. Tumbler pivot post 38 has opening 4
3 through an elongated longitudinal extension 48 to support and guide the bolt so that it can slide between a retracted position and an extended position. The opening 43 also includes a key tip or foot 45 attached to the inner end of the rotatable customer key post 24.
Part 4 that engages and cooperates with the hot bolt oil cutter
4 is formed. The shape of the bolt opening that contacts the key tip 45 limits bolt extension and retraction.

The lock 10 includes a set of customer tumblers shown at 49 in FIG. In the illustrated embodiment, seven tumblers of each type are arranged alternately within the case (see FIG. 2); The arrangement is not critical; all tumblers 49, 50 swing around the post 38.

As shown in FIG. 2, it is preferable that the customer tumblers and the guard tumblers are inserted alternately onto the post 38, with one customer tumbler 49 near the lid 21, then the guard tumbler 50, then the second customer tumbler, etc. It is arranged like this. A more detailed description of preferred types of customer tumblers can be found in Applicant's aforementioned Patent No. 3,727,4.
No. 39 or pending patent no. 449,389.

Figures 4 to 6 show one customer tumbler 4 between the drawings.
Only 9 and one guard tumbler 5o are shown. However, it is clear that the other tumblers in each set can have the same contour shape, except that the date position and therefore the alignment position may vary from tumbler to tumbler.

The guard tumbler 50 is preferably in the form of a thin flat member, one of which is shown in FIG. The shape of the tumbler 50 itself may be the same as that shown in the applicant's aforementioned patent. The tumbler is rotatably mounted on the post 38, and is rotated clockwise around the pivot by a spring 511C. At one end of each tumbler is a tooth rod 4 that when the bolt is retracted (see Figures 5 and 6).
2? : There is an r-t 52 to accept. When setting two tablets in one combination by bending the tumbler as specified,
The tumbler is captured in the rest position by a stop lip or surface 53 on the tumbler that presses against the customer key post shank 28. In the bent rest position, the tumbler r-) is out of alignment with the bolt pin.

Guard Kundera 50 has a guard (
or actuation] A keying edge 54 is provided, which edge preferably rests on the elongated arm 55 of the tumbler. The arm 55 can be bent relative to the date centering on the 9th region 5'6' of the song.

In the illustrated embodiment, the bending region 56 consists of a rounded neck. In FIG. The solid line indicates the initial or neutral configuration at the time, the set configuration corresponding to the key lift, and the dotted line indicate the other set configuration corresponding to the other key lift.

At the time of initial manufacture or supply, the tumbler is not bent and occupies 1 d of the neutral or initial position.

In this configuration, the edge 54 acts as a first stop surface, and the suspension of the spring 51 rests on the post 25, in which case the stop edge 53 is inactive and thus separated from the post 24. In this rest position, the tumbler date can be retracted by aligning the tumbler date with the pinion rod pinion 42 and throwing the bolt tip, and no further date alignment is required.

By turning the guard key 357 while holding the tumbler so that it does not bend, the tumbler can be bent from its initial shape to the set shape (i.e. the first key lift height shape). However, it is preferable to engage the bolt pin 42 with the tumbler date 52 for this purpose.With the tumbler 7 unbent, actuate the guard key to prevent the surface from bending. 54 and bend the arm 55 around the neck portion 56 (counterclockwise as seen in Figure 6) to set a constant key lift height. The same force as described in Further, the earlier patents do not disclose a device for deforming the tumbler for different keys.Furthermore, the edge 54 is not connected to the post 25. Even if the tumbler is bent again to its initial or neutral configuration, where it is supported by the tumbler and acts as a stop again, the arm does not retain its position but moves to a slightly different position as soon as the bending force is removed due to spring return. I'll put it away.

However, it has now been found that the tumbler unexpectedly bends back to its initial or neutral configuration, and devices have been discovered that take into account the rebound. The tumbler can be bent back to its initial shape by bending it in the opposite direction to the direction in which it was originally bent (clockwise in Figures 4 to 6). (See Figure 5.) However, simply bending the edge 54 back into contact with the post 25 is insufficient because the arm 55 will spring away from the post when the guard key comes off the arm 55. It has been found that the effect of rebound can be counteracted by over-bending the arm beyond its initial position; the post 25 acting as a stop would normally prevent this;
This "stop" is rotatable and is further provided with a relief 65 on the post that partially reduces its diameter to allow for a sufficient amount of overbending to cause the surface 54 to return to its initial neutral position. do.

The change key 60 is inserted into the lock case 20 through the opening 61 at the bottom of the case. The tip of the key is supported and supported in a recess (not shown) in the lid 21.

As shown in FIG. 5 9, the change key 60 engages an edge 63 of the arm opposite edge 54.

In order to return the arm 55 to its original position, it is first bent beyond that position using the change key. In order to make this "over-bending" Z possible, when the change key is actuated (see Figure 5), it is necessary to escape or flatten the side of the post near the edge 54.
is provided. As shown in FIG. 4, when key post 25 assumes a rotational position such that relief 65 separates from arm 55, the circumference of the post near edge 54 engages the tumbler edge and captures it in its initial configuration. Therefore, it prevents excessive bending,
When the post 25 is rotated so that the flat portion 65 faces the edge 54 (see FIG. 5), the post circumference does not capture the edge 54. In other words, the stop constituted by the post 25 is movable (rotatable) to a position where it does not prevent overbending, and this movement brings about a position in which the relief t-stop is effectively removed. This makes it possible to bend the arm 55 past the position of the surface 54 blocked by the post 25.

Before bending the tumbler from its initial configuration to fit the key, edge 5
4 acts as a first stop latching edge in that it is captured by the post 25 and thereby controls the tumble date position. When the tandera has been bent to fit a particular key, the arm 55 is moved far enough from its original position so that the edge 53 can function as a second stop edge, as described above.

In the rest position, the edge 53 rests against the customer key post 24 and controls the rest position of the tumbler.
Acts as a stop. Under this condition the tumbler moves out of alignment.

Surprisingly and contrary to earlier expectations, it has been found by the applicant that it is possible to bend and rebend the tumbler over at least 25 times to co-operate precisely with different keys. .

This allows for all of the guard key exchanges that are actually required. In order to facilitate such repeated bending, the material from which the tumbler is made must be not an elastic body but one that can be deformed by bending. A preferred material is copper alloy A342, but other suitable materials may also be used in view of the above.

Traditionally, safe deposit box guard tumblers have been assembled to fit the specific guard key in use, or once set in a specific guard key, cannot be changed from that guard key.

The present invention solves this problem. The lock can be fitted to the first guard key and then re-bent to fit a different guard key if the guard key needs to be changed.

The operation of the lock according to the preferred embodiment of changing the guard tumbler of the lock from one key to another can be summarized as follows.

B. Insert the first guard key 35ya and turn it to set (align) the guard tumbler.

Insert the customer key 34 and turn it.

This puts the lock in the state shown in Figure 6 and the bolt is retracted.

Next, turn the guard key back to the insertion position and take it out.

Therefore, the guard tamper post 25 is aligned with the tander edge 54 of the turning relief part 6Fl by using a 4-degree tip.

2. Insert the change key 60 and turn it to the position shown in FIG. 5, then turn it back and take it out; this returns the guard tumbler to its initial or neutral configuration.

Next, turn the tamper post 25 back to the key entry position. Insert the new Guard Key Z and bend the tumbler from its neutral form to its new form. the lock is now set to the desired new key and is ready for normal operation.

The present invention has been described above as being applied mainly to the guard key of a double-key safe-deposit box lock, but from the purpose of the text, the tumbler of the present invention is applicable to one or both sets of tumblers in a double-key safe-deposit lock. It is generally useful for locks and can also be used in single-key locks. The invention can also be used to reset a portion of a tumbler inside a lock.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view of a representative embodiment of a lock according to the present invention comprising a series of safe deposit boxes, and FIG. 2 is a horizontal cross-sectional view taken along line 2--2 of FIG. 6 shows a side view of one guard tandera according to a preferred embodiment of the present invention, showing several different bendable configurations of the tumbler, and FIG. 4 shows the line 4--4 of FIG. Figure 5 is a vertical cross-sectional view similar to Figure 4, showing the lock after the lock is set in the key and the tumbler is disassembled or removed. Fig. 6 is a vertical cross-sectional view similar to Figs. 4 and 5, but shows the tumbler being bent from its original form to its new form in an open state.
Shows the lock bent and opened by two keys. 18... Lock; 34... Customer key; 35... Guard key; 24.25... Key post; 38... Post; 41... Bolt; 42... Bolt pin; 43...
・Bolt extension opening; 49, 50...Tumbler; 52
...Date; 54...Operation key engagement edge; 55...
Elongated arm; 56... bendable part; 60...
Change key; 65... Escape agent Akira Asamura

Claims (1)

[Scope of Claims] (1) It has at least one key-settable lever tongue sill, and the position of the actuating key latching edge of the tumbler is changed from an initial configuration to a set configuration by turning the key. By bending in the direction, it can be set to the date of the Tansira. When the change key is turned, it engages with the change key engagement edge of the Tansira, and the bendable part of the Tansira is moved in the opposite direction to the first direction. bending the bendable portion sufficiently into the initial configuration such that the actuating key latching edge returns to the initial configuration when the change key is removed from the cylinder, and the bendable portion rebounds in the first direction. arm, characterized in that the lock is formed with a device for receiving and bearing the chezo key in such a position that it is bent too far. (2. Claims: A movable stop device is provided in the lock for stopping the tongue shield in the r-}u row position with respect to the bolt when the actuating key engagement edge is in the first configuration, the stop device being arranged in the lock. A lock characterized in that it can move to a position where the tongue sill is not blocked when it is bent too much. (3) A lock according to claim 1, which includes:
The lock is characterized in that the change key is pivotally supported so as to be able to engage with a change key engagement edge on the tongue sill at a portion of the tongue sill opposite to the operation key engaging synthetic fiber of the change key. (4) The lock according to claim 6, characterized in that the activation key latching edge and the change key engaging edge are formed on both sides of an elongated arm of the tongue sill that can be bent with respect to the date. A lock to do. (5) In the lock according to claim 2, the stop device is rotatable with respect to the actuation key engagement surface, and the stop device is rotated to a position such that the lock is not blocked when the tongue is bent too far. A lock characterized by forming a recess that can be locked. (6) A lock according to claim 2, wherein the stop device is a rotatable key post for receiving the activation key. (Force) In the lock according to claim 6, said key post forms said relief on one side thereof, said relief allowing said overbending without the tangent engaging said key post. (8) The lock according to claim 7, wherein the relief of the key post lock is moved away from the activation key latching edge when the bolt is extended. The lock is characterized in that when the tumbler is bent back, the lock is turned toward the activation key latching edge by rotation of the key post. The position of the actuation key engaging edge can be set for the date of the tangera by turning the key and bending the bendable portion of the tumbler from the initial configuration to the cent configuration in a first turn; When the change key is turned, it rests on the stop in the lock and aligns the date of the tangela to accept the bolt, and when the change key is turned, it engages the change key engaging edge of the tangela, and the date of the tangela is turned. bending the bendable portion again in a direction opposite to the first direction, such that when the change key is removed from the tangera, the bendable portion springs back in the first direction until the activation key latching edge returns to said initial configuration; a device for receiving and bearing a change key in a position such that the bendable portion is sufficiently bent beyond said initial configuration, and said stop in a position such that said stop does not block said tangera during said old bending. (10) A lock according to claim 9, characterized in that the stop is a rotatable key post, the key post receiving an actuating key. , the lock is characterized in that it forms a recess that can be moved by rotation of the key post so that the key post does not block the tumbler when the key post is bent too much. The position of the engagement edge of the operating key is changed by turning the operating key and bending the bendable part of the Tangela in the first direction from the initial configuration to the set configuration: thereby creating a type of lock that can be set against the date of the Tangela. When the change key is turned, it engages with the change key engagement edge of the tumbler, causing the bendable portion of the tangela to move in the opposite direction to the first direction, and when the change key is removed from the tangela, the bendable portion moves. a device for receiving and bearing the change key in a position sufficiently bent beyond the initial position to spring back into the initial configuration in a first direction; The lock is provided with a rotatable key post for positioning to engage said keying surface, said key post causing the tumbler to rotate relative to the bolt when the tangeler is in the first configuration.
It acts as a stop to locate the column position, and the self-fJ
#The key post has a recess in a part of the post, and the recess can be positioned close to the tangera so that the key post does not stop the tangera and allows the overbending. Key lock.