JPH09112089A - High safety key operation lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock of high safety by driving a plurality of gears with a key having a coding bit, turning a plurality of driven gears having a lock blot recess, and releasing the lock with each gear recess kept aligned. SOLUTION: A rotor 43 is formed out of a plurality of gears and each gear is formed to be independently capable of being driven. Furthermore, a plurality of gears 59 having a slot 61 are combined to form a driven element 5, and mounted so as to keep a variable center distance with the rotor 43. On the other band, a coding bit is formed on the end 29 of a key 2. Then, when this key 2 is inserted in a key groove 10 and turned, each gear of the rotor 43 is rotated, together with each gear of the driven element 58. As a result, the slot 61 of each gear 59 is properly positioned and a rock bolt recess 62 is formed, thereby causing a rock bolt 23 to retreat and release a lock. For positioning the slot 61, a dial lock system is applied, and the rotor 43 and the driven element 58 are disengaged from each other wherever necessary for adjustment. According to this construction, a key operated lock of high safety can be provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention generally relates to a key operated lock,
Especially when the lock bolt of the lock is in its retracted and unlocked position,
The present invention relates to a highly safe key-operated lock configured so that a key does not come out when the lock is released.

[0002]

2. Description of the Related Art It is well known that a key-operated lock has higher safety than a dial combination lock because it is easy and quick to operate and can be unlocked only by a key holder concerned.

Nevertheless, the conventional key-operated lock may be pry open by utilizing the "feel" of the position where the lock bolt is slid from the protruding locking position to the retracted unlocking position.

Furthermore, the conventional key-operated lock has the drawback that the combination can be changed only by replacing the entire disc tumbler assembly.

[0005]

SUMMARY OF THE INVENTION It is an object of at least the preferred embodiments of the present invention to provide a new high security key operated lock. Another object is to make the lock have a strong resistance to the breaking of the lock. Yet another object is for the lock to be provided unconditioned and initialized by the end user. Yet another object is to allow the combination of locks to be changed by the relevant keyholder.

[0006]

According to a first aspect, the present invention comprises a lock bolt and a plurality of rotors each arranged to be separately rotated by a respective coding bit of a key, A plurality of driven elements, each movable by one of the individual rotors, wherein said separate rotation causes the rotated driven elements to be positioned to release the lock bolt. A drive element,
Provided is a lock comprising means for isolating the rotor and driven element from each other such that the rotor is adjusted to accept different keys.

Thus, the "combination" can be changed without removing the rotor from the lock.

The rotor and driven element are meshing cogwheels, and the breaking means is means for relative displacement with respect to the rotational axis of the cogwheels.

The lock comprises a variable position anti-picking element which engages the teeth of the rotor cog wheel during rotation.

Since the lock bolt is not released,
The rotor may also be provided with means for fixing the anti-picking element when the cogwheel is not rotating and when the locking bolt release force is applied.

According to a second aspect of the present invention, a key having a stop bit and a series of radially projecting coding bits axially spaced along the shaft is used. The locking bit and each coding bit have a leading edge and a trailing edge, the leading edge of the coding bit being staggered with each other to obtain the coding of the key, the locking bit and the coding bit. The trailing edge of the bit is aligned to form one side of an axially extending groove, and the lock comprises: (a) a housing having an inward radial key guide pin and a lock bolt opening and a keyway; ) A key actuated cogwheel assembly having an axial axis of rotation and comprising a series of cogwheels, each cogwheel having a central opening coinciding with the keyway, each cogwheel having an internal Direction radial direction A key actuated cogwheel assembly having a key engagement projection and axially spaced to engage a coding bit upon insertion of the key into the housing; and (c) an axial rotation axis. A driven cogwheel assembly comprising a series of cogwheels, each cogwheel having a slot, axially spaced to mate with a corresponding key actuated cogwheel, A drive cogwheel gear assembly, and (d) a lock bolt reciprocable with respect to the housing between a retracted position and a protruding position, the retracted position and the protruding position corresponding to a released state and a locked state of the lock, respectively. A lock bolt, and (e) a lock bolt actuating mechanism that reciprocates the lock bolt between a retracted position and a protruding position, and i) a key actuated cogwheel assembly, wherein the trailing edge of the stop bit guides the key. Having a first operating state corresponding to the locked state of the lock achieved when locked by the pin, each key actuating cogwheel is biased into the key insertion position by the trailing edge of the corresponding coding bit, In position, the key engagement protrusion is aligned with the key guide pin and is essentially a continuous ward of the lock.
And a key actuating cogwheel assembly has a second actuated state that occurs when the leading edge of the stop bit is locked by the key guide pin, and Driven cogwheels are operated by corresponding key actuated cogwheels to rotate to their respective index positions to provide lockbolt recesses that align with the slots and coincide with lockbolt openings. (EN) Provided is a lock having a structure which allows a lock bolt to move in and out of a housing by a mechanism to prevent the key from coming out of the housing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In a preferred embodiment of the invention, the key guide pin is more inward than the keying cogwheel engagement projections to prevent rotation of the key by partial insertion into the housing. Project to.

In a preferred embodiment of the present invention, the lock bolt is biased to the outermost projecting position in the locked state so that the rotation of the key does not interfere with the rotation of the driven cog wheel.

In a preferred embodiment of the invention, the lock bolt actuating mechanism is releasably locked in the locked position by locking means to prevent free movement of the lock bolt into the lock bolt recess during formation, for example: , Lock,
The lock bolt does not simply "fall" into the lock bolt recess, as occurs when the lock bolt is mounted vertically mounted.

In the preferred embodiment of the invention, the lock bolt actuating mechanism is actuated by a second partial rotation of the key by engagement, while the inward axial displacement of the key relative to the housing employed causes The key actuation, which must be maintained in the second actuated state, disengages the key from the cogwheel assembly, while releasing the locking means for locking the lock bolt actuating mechanism in its locked position. The locking means is preferably spring loaded to bias the key outwardly of the housing in the second actuated state of the key actuated cogwheel assembly.

The key has a guide structure cooperating with a key guide pin of the housing, wherein "full" rotation of the key causes one step to transfer the key actuating assembly between the first and second actuated positions and the other step. Is a two-step operation in which the lock bolt reciprocates between the retracted release position and the protruding locking position. Typically, a "full" rotation of the key is equal to 3/4 rotation where the step of translating the key actuation assembly is about 5/8 rotation and the reciprocating lock bolt is 1/8 rotation.

In the preferred embodiment of the present invention, the lock bolt actuation mechanism is coupled to the lock bolt by an elastically flexible coupling.

In a preferred embodiment of the invention, the lock further comprises an antilock picking mechanism including a first member integrally formed with a second member, the first member being a cogwheel of a key actuated cogwheel assembly. By being biased and engaged about its circumference, a circular "out / on" motion about the axis of rotation as it passes through the cog and the trough between adjacent cogs and the contour of the cog during rotation of the cogwheel. And the second member has a portion proximate to the rear of the lock bolt which is biased to the first operating position to retract the lock bolt into the lock bolt recess during formation and It has a second operating position that prevents it from retracting into the lock bolt recess.

The driven cogwheel assembly is displaced laterally relative to the key actuated cogwheel assembly permanently attached to the housing and is disengaged therefrom to reinitialize the lock and renew the key. Allow the combination of. The present invention also provides a key used for the above lock.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, FIGS. 1 and 2 show a high safety key actuated lock and a clockwise turning lock 1 generally indicated at 1.
Figure 2 shows a key 2 with an axial rotation axis which opens and turns counterclockwise to close the lock 1.

The lock 1 comprises a housing 3 having a through hole 4 allowing the housing 3 to be attached to a fixed body. The housing 3 is mounted on the main block 5 by means of a main block 5 and screws 8 received in screw holes 9 (see FIG. 3) in the corners of the main block 5.
And The cover plate 7 comprises a key groove 10 and two slots 11, 13 the operation of which will be explained below. The key groove 10 is an inwardly formed key guide pin 14 that acts as the first part of the knurled portion of the lock 1.
The key guide pin 14 guides the key 2 in a two-step opening / closing procedure, as will be described in detail below.

The main block 5 includes a rear wall 15 and a long side wall 1.
6 and 17 and short side walls 19 and 20. The rear wall 15
An inclined rectangular slot 18 whose operation will be described below,
A first position A of normal operation of the lock 1 and a contoured slot 21 allowing two positions of the screw with a second position B required during the recoding procedure of the lock 1 in the manner detailed below with reference to FIG. With. The rear wall 15 also holds the screw 22 upon release and is displaced between the two positions during the recoding procedure.
3 is provided. The side wall 19 is provided with a lock bolt opening 25 that reciprocates the lock bolt 26 by the action of a key-operated lock bolt operation mechanism 27, which will be described in detail below. The lock bolt 26 has a retracted position corresponding to the opened state of the lock 1. It is shown in the opposite, protruding position which corresponds to the closed state of the lock 1.

Referring now to FIGS. 3 and 4, the key 2
Between the tail portion 28 and the front portion 29 having a depth corresponding to the height of the key guide pin 14 and having an axially extending groove 30 having a first side wall 31 and a second side wall 32. The key 2 can be inserted into the housing 3 when the cylindrical cross-section split and the groove 30 coincide with the lock step of the lock 1,
Is the key guide pin 14 that collides with one of the side walls 31 and 32.
Prevents the partial insertion from turning.

The front portion 29 is a three-piece guide structure 33 which performs a two-step operation of opening and closing the lock 1 in cooperation with the key guide pin 14.
The six radially projecting axially spaced coding bits 34, the centering bit 35 for centering the key 2 on the housing 3, and the elements of the key actuation lock bolt actuation mechanism 27. It has a rectangular projection 38 that fits. The axial spacing between adjacent coding bits 34 is greater than the axial length of the coding bits 34 so that the coding bits 34 disengage from their respective cogwheels in the key actuated cogwheel assembly, as described below. Reasonable inward axial displacement is possible.

The three-piece guide structure 33 is provided on the side wall 3 of the groove 30.
1, a front bit 39 having a leading edge 39A and a trailing edge 39B aligned with 32, a first stop edge 40A aligned with the sidewall 31 of the groove 30 and a first stop edge 40B at about 3 o'clock relative to the groove 30. It includes an intermediate stop bit 40, a rear bit 40 having a first stop edge 41A aligned with the sidewall 31 of the groove 30 and a second stop edge 41B at about 5 o'clock to the groove 30.

As described above, the guide structure 33 includes the rear wall of the front bit 39 and the front wall of the rear wall 41 which face each other, and the first wall which faces the front wall.
About 5 defined by stop edge 40A and second stop edge 40B
/ 8 turn of the first long channel C and about 1 / th as defined by the opposing rear wall of the intermediate stop bit 40 and the front wall of the rear wall 28 and the opposing first stop edge 41A and second stop edge 41B.
8 turns of the first short channel D.

Each coding bit 34 has a leading edge 34A and a trailing edge 34B, and the leading edge 34A of the coding bit 34 is staggered at various tilt positions to code the key 2 to provide the coding of the coding bit 34. The trailing edge 34B is aligned with the sidewall 31 of the groove 30. The total number of combinations of locks 1 is defined, on the one hand, by the number of coding bits 3, and, on the other hand, by the possible tilt positions in which the leading edge 34A of each coding bit 34 is set. Typically, in this case, the leading edge 34A, as shown, takes one of the eleven tilted positions, resulting in a total of 1 ¹⁶ combinations for the key 2, and thus the lock 1.

Referring now to FIG. 5, the housing 3 is
A total of four including six cogwheels 44 having an axial rotation axis 43 'and axially spaced by spacer elements 45 by the axial spacing of the key's coding bits 34.
3 accommodates a key actuated cogwheel assembly, the ends 46 and 47 of the spacer elements being long side walls 16, 17 respectively.
Fitting tightly in the recesses 49, 50 provided in the plate 51, the plate 51 has a central opening 52 for receiving the keying bit 35 of the key so as to center it when the key 2 is inserted into its housing 3.

The cogwheels 44 are annular and each have a central opening with an axially projecting rim 55 and an inward radial engaging projection 57 which are inserted into the central opening 56 of the spacer element 45 (shown in FIG. 6). 53, and each cogwheel 44 has
Corresponding coding bits 34 allow separate rotation between the key insertion position and the index position encoded by the corresponding coding bits 34 when the engagement projections 57 are aligned with the key guide pins 14.

The cogwheel assembly 43 has a first operating state corresponding to the locked state of the lock, and the stop bit tail 40.
A is reached when locked by the key guide pin 14 and each key actuated cogwheel 44 has its corresponding coding bit 3
4 of the cogwheel assembly by being biased into the key insertion position by its trailing edge so that its engagement position aligns with the key guide pin 14 to define an essentially continuous lock step of the lock. The key 2 can be inserted into and removed from the housing 3 in the first operating state of.

The cogwheel assembly 43 has a second operating state in the long channel C which is reached from the first operating position by clockwise rotation of the key 2 which corresponds to the passage of the key guide pin 14 so that each cogwheel The gears 44 respectively rotate to the code position to prevent the key 2 from being pulled out from the housing 3, which is the norm of the high-security key operating lock.

The housing 3 also has an axial rotation axis 5
8'contains a second cogwheel assembly, generally designated 58, having a corresponding key actuated cogwheel 44 and including a cogwheel 59 axially spaced to mesh. Each cogwheel 59 has a slot 61 extending radially inwardly from its periphery, all slots 61 being aligned in the second operating state of the cogwheel assembly 43 and reciprocating through the lock bolt actuating mechanism 27. When in the retracted position, a lock bolt recess 62 is formed that coincides with the lock bolt opening 25 that receives the rear portion of the lock bolt 26.

The cogwheel 59 is rotatably mounted on a spindle 63 which carries a spacer element 64 and a washer 65, which spindle 63 is mounted on the screw 22 and which fits in a slot 11 of the cover plate 7 in a substantially rectangular projection. It has a front end 67 with 68. The ends 69, 70 of the spacer element 64 fit into the recesses 71, 73 of the side walls 16, 17 of the main block 5, respectively.
However, unlike the ends 46, 47 of the spacer element 45, which fit tightly in the recesses 49, 50, respectively, the recesses 71, 7
3 is configured so that the entire cogwheel 58 can be displaced laterally from position A to position B, so that the cogwheel assembly 58 is disengaged from the cogwheel assembly 43 and the lock with the new combination. 1 can be reinitialized.

Referring now to FIGS. 7 and 8, the lock bolt actuating mechanism 27 receives a lock bolt block 75 having a lock bolt-shaped front portion, an intermediate neck portion 76, and a spindle 63 slidably interposed therebetween. A rear fork 77 having an upper leg 79 and a lower leg 80 spaced apart. The upper leg 79 has a recessed rear free end having a circular protrusion 81, and the lower leg 80 has a rear portion 82 having an elongated recess 83. These functions will be described later.

The intermediate neck portion 76 has a hole (not shown) for receiving the spring 85 and a first wall portion 87 in the unlocked state.
An upper portion of the rolling element 86 having a raised position and a second lower position of the channel 88 adjacent the side wall 19 biased by the spring 85 in the locked state. Therefore, the rolling element 86 prevents the lock bolt 26 from interfering with the rotation of the cogwheel 59 by being biased to its outermost protruding position in the locked state of the lock.

The lock bolt actuating mechanism 27 further includes a key actuating rotary disc 89 having a protruding tubular boss 90 defining a through slot 91, the disc 89 having its axial axis of rotation axially rotating the key actuated cog wheel. Axis 4
It is arranged so as to coincide with 3 '. The disk 89 is attached to a double end stop pin 92 having a first rectangular protrusion 92A received in the slot 18 and a second rectangular protrusion 92B received in the slot 91, and the pin 92 is attached.
However, in the locked position, ie when the lock bolt 26 is in its extended position, it is provided with a spring 93 along its length so as to form a stop means for locking the lock bolt actuating mechanism 27. In the normal position of the lock 1, the outer surface of the protrusion 92A is flush with the outer surface of the rear wall 15.

The key 2 engages the rotating disc 89 by the projection 38 which is more closely fitted in the slot 91 by the inward axial displacement of the key and the user has to push the key 2 to axially displace the pin 92. . Therefore, the axial displacement of the pin 92 compresses the spring 93, the projection 92A extends beyond the outer surface of the rear wall 15, and the projection 92B extends into the slot 91.
To release the rotating disc 89 free to rotate clockwise to cause the lock bolt 26 to reciprocate from its extended locked position to its retracted unlocked position as the key rotates along the channel D. To do. On the other hand, during the locking of the lock 1, the pin 92 urges the key 2 outwards so that the key 2 rotates counterclockwise in a single continuous manner as the key guide pin 14 passes from the end channel D to the long channel C. Can be achieved by moving.

The lock bolt actuating mechanism 27 further includes
An elongated control rod 94 having a concave front end 94A for receiving the projection 81 of the lock bolt block 75;
A slot 9 for receiving a protrusion 96 arranged around
And a rear end having five. The lock bolt block 75 and the control rod 94 are connected by a U-shaped spring 97 for the reason described below, and the U-shaped spring 97 extends between the facing pins 97A and 97B.

7 and 8 also include an anti-lock member including an L-shaped member 99 having a first leg 100 and a second leg 101.
The picking mechanism 98 is shown, the L-shaped member 99 having its legs 1
It is pivotally attached at the top between 00 and 101. Leg 101
It comprises a rod 103 which extends substantially parallel to the axial axis of rotation 43 'and whose front end is received in the cover slot 13, which rod 103 carries a sleeve 104 rotatably mounted thereto. The L-shaped member 99 is urged by a spring 105, and the sleeve 104 causes the key-operated cogwheel 4 to move.
4 is urged to ride on the periphery of the sleeve 104.
Performs a cyclic "in / out" movement with respect to the axial rotation axis 43 'as the individual cogwheels 44 are rotated by their respective coding bits 34 as they pass through the trough between the cogs and the adjacent cogs. . On the other hand, in the cyclic “in / out” movement of the sleeve 104, the “in” position of the sleeve corresponds to the “down” position of the front end of the leg, and the “out” position of the sleeve corresponds to the “up” position of the front end of the leg. , As the "up / down" movement of the 101 front end of the leg.

As will become apparent below, the length of the leg 100 is determined by keeping the leg 101 in its "down" position, even with a slight inward displacement of the lock bolt 26 in the locked state. The engagement is adapted to prevent rotation of the cogwheel 44.

The anti-lock picking mechanism 98 does not interfere with the normal two-step locking / unlocking operation of the lock 1 in the first place.
During the transition of the cogwheel assembly 43 between the first operating state and the second operating state, the lock bolt 26 is in its protruding locking position and the "up / down" of the front end of the leg caused by the rotation of the keyed cogwheel 44. "Without impeding movement, secondly, the sleeve 104 is converted to the" down "position of the front end of the leg in the second actuated state of the key actuated cogwheel assembly.
This is because the lock bolt 26 can be retracted to the lock bolt recess 62 by the elongated recess 83 that receives the leg 101 by being in the "on" position.

Next, the operation of the lock 1 will be described with reference to the two-step unlocking procedure,
That is, the retreat of the lock bolt 26 from the protruding locking position (FIGS. 9A to 10A) to the retracted unlocking position (FIGS. 10B to 11) will be described. Figure 9 for clarity
In FIGS. 9A and 9B and FIG. 11, the key actuated cogwheel assembly 43 and the driven cogwheel assembly 58 each have three cogwheels 44 and 59, respectively, rather than the six cogwheels shown in FIGS. With a rod 10
The lock bolt actuating mechanism 27 and the anti-lock picking mechanism 98 have been removed except for 3 and the sleeve 104.

Thus, as shown in FIGS. 9A-10A, the lock bolt 26 is in its protruding position and the cogwheel assembly 43 is in its first actuated state of the key 2.
Ready for insertion into the housing 3, the rolling element 86 is biased by the spring 85 against the channel 88 to prevent the lock bolt 26 from interfering with the smooth rotation of the gear 59 when the lock bolt 26 is engaged. It is in its locked state by the projection 92B received in the slot 91.

In the first case, when aligned with the key guide pin 14 of the groove 30, the user inserts the key 2 into the housing 3 until it is locked by the rear wall of the rear bit 41 which contacts the key guide pin 14. To do. Then, as shown in FIG. 9B, the user rotates the key clockwise as indicated by arrow E to pass the key guide bit 14 along its long channel C from stop edge 40A to stop edge 40B. actually,
When the key 2 is rotated clockwise, each engagement protrusion 57 engages with the front edge 34A of the corresponding coding bit 34,
Each helical gear 44 is independently rotated from its key insertion position to its index position. By rotating each helical gear 44 in the clockwise direction, the corresponding driven cogwheel 59 is rotated counterclockwise as shown by the arrow F. Rotate until facing alignment with 25 to obtain lock bolt recess 62.

At the same time that the user is rotating the key clockwise, make sure that the front end of the rod 103 reciprocates in the slot 13, as indicated by the double arrow G, which
As described above, the clearance between the rear portion of the lower leg 83 and the end of the leg 101, which allows for corresponding cyclic "up / down" movement, allows the sleeve 104 to fit freely on the outer circumference of the cog wheel 44 when fitted. Is evidence of the cyclical "in / out" movement of the.

After the formation of the lock bolt recess 62, the user cannot rotate the key 2 clockwise any more due to the abutment of the stop edge 40B against the key guide pin 14. The user then pushes the key 2 axially inward to engage the lock bolt actuation mechanism 27, while releasing it from the stopping action by the pin 92, which itself causes the key actuation cogwheel 4 to move.
4 and leaves the key actuated cogwheel assembly 43 in the second actuated state for the second step of the release procedure.

Then, as shown in FIG. 10A, the user further rotates the key 2 in the short channel D in the clockwise direction as indicated by the arrow J corresponding to the passage of the key guide bit 14 so that the lock bolt actuating mechanism 27 is activated. The lock bolt 26 is retracted into the housing 3 by the rear portion of the lock bolt 26 received in the lock bolt recess 62 as indicated by the arrow K, and the rear portion 82 slides on the front end of the leg 101,
The rolling element 86 is pulled up from the channel 88 to the track portion 87 as shown in FIG. 10B.

As can be readily seen in FIG. 11, the key actuated cogwheel assembly 43 is in its second actuated position,
Since the lock is open, the user presses key 2 to lock 1.
Can't pull back from.

To lock the lock 1 and remove the key 2, use the key 2
Counterclockwise rotation of the short channel D to long channel C
During the transition to, the key 2 is reversed, except that the key 2 is biased outward by the pin 92.

Next, referring to FIGS. 12 and 13, the lock 1
The anti-lock locking mechanism 98 in the case of an intended "feel" that may be exerted on the indexed position of each cog wheel 59 to enable the final formation of the lock bolt recess 62, which allows the lock bolt to be opened. If the lock 1 does not have an anti-lock locking mechanism 98, this is achieved by a relatively simple procedure, which is done in the following way.

First, the lock lock picker inserts the tool into the keyway of the lock. The tool is adapted to apply an initial slight opening load to the control rod 95 to push the neck 76. In practice, the neck 76 only pushes the outermost protruding cogwheel 59 '. Second, the false lock picker inserts the second tool into the keyway of the lock. This tool is a cogwheel 43 selected
To rotate. Third, the false lock picker confirms the outermost protruding cogwheel 59 'by sequentially rotating the cogwheel 43. The outermost protruding cogwheel 59 ′ can be easily identified by the clicking sound when its cogs hit the neck 76. On the contrary, the other cogwheel 59 does not make a clicking sound when rotating. Fourth, the barbed lock picker rotates the outermost protruding cog wheel 59 'until its slot 61' is aligned with the lock bolt opening 25. This position is
This can be detected by a large displacement of the lock bolt 26 as compared with an inward displacement when falling into the trough between adjacent cogs.
Fifth, the erse lock picker repeats the above steps on all subsequent outermost protruding cogwheels 59 to form the lock bolt openings 62. And finally, the false lock picker opens the lock 1 by sliding the lock bolt 26 into the lock bolt recess 62 using the same initial tool.

The presence of the anti-lock picking mechanism 98 significantly delays the execution of the above process sequence by simultaneously blocking the application of an open load to the control rod 94 and the rotation of the cogwheel 43. This is indicated by the arrow L as shown in FIG.
The open load on the control rod 94 is impeded by the trough between the adjacent cogs to prevent rotation by placing the free rear end of the lower leg 80 on the front end of the leg 101 of the L-shaped member 99, as shown in FIG. This is to prevent the "up / down" movement of the leg 101, which impedes the rotation of the cog wheel 44 by the sleeve 104.

As shown in FIG. 13, attempting to rotate one of the cogwheels 44 as indicated by the arrow M causes the sleeve 104 to move radially outward relative to the axial rotation axis 43 '. This outward radial movement causes the leg 101
The leg 101 acts as a holding member for the lock bolt 26 by moving the front end of the leg upward.

Finally, not only is the execution of the above-mentioned sequence of steps for prying the lock 1 considerably slower, but moreover, the lock 1 is further pick-proofed (prevents prying open) by the coupling 97. 97
However, due to its flexibility, the false lock picker cannot ascertain when the index positions of each cog wheel, that is, when their slots 61 coincide with the lock bolt openings 23.

As already mentioned, the lock 1 combination can be re-initialized, for example, with a new key having a different combination than the old key being copied. Next, the operation sequence of re-initialization of the lock combination with the new key will be described with reference to FIGS. 14A to 15B.

14A-15B, in a manner similar to that of FIG. 9A, the key actuated cogwheel assembly 43 and the driven cogwheel 58 each have more than six cogwheels as shown in FIGS. 5 and 6, respectively. Rather, the three cogwheels 44 and 59
The lock bolt actuating mechanism 27 and the anti-lock picking mechanism 74, except for the rod 103 and the sleeve 104, have been removed from the drawings for clarity and convenience.

Referring to FIG. 14A, lock 1 is shown having a key actuated cogwheel assembly 43 in the second actuated state. However, instead of the lock bolt 26 being retracted into the lock bolt recess 62, the cogwheel assembly 59 is moved laterally by loosening the screw 22 holding the spindle 63 and sliding the spindle 63. As indicated by the arrow P, it moves away from the cogwheel 43, so that the cogwheel assembly 58 is in the direction indicated by the arrow from position A to position B.

Referring now to FIG. 14B, once they are disengaged from each other, the cogwheel assembly 43 is later withdrawn and replaced with a new key 2 ', the counterclockwise direction of the old key 2 as indicated by arrow Q. The rotation returns to the first operating state.

Referring now to FIG. 15A, the key 2'is rotated to the second actuated state of the cogwheel assembly 43, as indicated by arrow R, wherein each cogwheel is rotated to the position shown in FIG.
15A, which is different from the index position of the cog wheel 44, the index position is determined by the corresponding coding bit 34 ', as is apparent from the index position of the cog wheel 44 of FIG. 15A.

Next, as shown in FIG. 15B, the cogwheel assembly 59 is returned to position A as indicated by arrow S and reengaged with the cogwheel gear assembly 43 to lock 1 of the key 2 '. The combination is coded.

While this invention has been described with respect to a limited number of embodiments, many modifications, variations and other applications of this invention will occur to those skilled in the art.

Each feature disclosed in this specification (including the claims) and / or shown in the drawings is incorporated into the invention separately from other disclosed and / or exemplified features.

In particular, the features of the dependent claims are included in the dependent claims.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a high safety key operated lock according to a preferred embodiment of the present invention.

2 is a rear perspective view of the lock of FIG. 1. FIG.

3A and 3B are front isometric views of the closure of the key associated with the lock of FIG.

FIG. 4 is a schematic cross-sectional view of the key of FIG.

5 is an exploded isometric view of the lock of FIG. 1. FIG.

6 is a longitudinal cross-sectional view of the key actuated cogwheel assembly of the lock of FIG. 1 taken along line VI-VI of FIG.

7 is an exploded isometric view of the lock bolt actuation mechanism of the lock of FIG. 1. FIG.

8 shows the assembled lock block actuation mechanism separated from the main block of the lock of FIG.

FIG. 9A shows the lock in the locked state and the key actuated cogwheel assembly in the first actuated state allowing the key to be inserted into the lock, and FIG. 9B shows the lock bolt recess for retracting the lock bolt. The key actuated cogwheel in the two actuated state is shown. In the following, all of the drawings up to FIG. 11 particularly show the operation sequence for unlocking the three cogwheels in each cogwheel assembly.

FIG. 10A shows a key actuation action of inserting the lock bolt into the lock bolt recess from the protruding locked position to the retracted and unlocked position, and FIG. 10B shows an opened state, that is, the lock bolt is pulled into the lock bolt recess. Showing a lock.

FIG. 11 shows the key actuated cogwheel assembly in the second actuated state, which prevents the key from being withdrawn from the housing when unlocked.

FIG. 12 illustrates actuation of the anti-lock picking mechanism of the lock of FIG. 1 to prevent attempts at lock picking.

FIG. 13 illustrates actuation of the anti-lock picking mechanism of the lock of FIG. 1 to prevent attempts at lock picking.

FIG. 14A illustrates the key actuated cogwheel assembly in the second actuated state and the disengagement of the cogwheel assembly from lateral displacement of the driven cogwheel assembly away from the key actuated cogwheel assembly. , FIG. 14B
Shows a key actuated cogwheel assembly in a first actuated state in which the old key can be pulled out and a new key inserted.
It should be noted that, in particular, all of the following figures up to FIG. 15B show an operation sequence for changing a typical lock combination consisting of three cogwheels of each cogwheel gear assembly.

15A shows a key actuated cogwheel assembly in a second actuated state in which the cogwheel is in the index position by the new key combination, and FIG. 15B shows a driven fit to the keyed cogwheel gear assembly. Figure 6 shows reengagement between cogwheel gear assemblies due to lateral displacement of the cogwheel assemblies.

[Explanation of symbols]

 1 lock 2 key 3 housing 5 main block 7 cover plate 8 screw 10 key groove 11, 12 slot 14 key guide pin 23 guard 26 lock bolt 27 lock bolt actuating mechanism 33 3 piece guide mechanism 34 coding bit 35 centering bit 38 rectangular protrusion 39 Front bit 40 Intermediate stop bit 41 Rear bit 43, 44 Key actuated cogwheel assembly 45 Spacer 49, 50 Recess 55 Rim 63 Spindle 75 Lock bolt block 76 Middle neck 77 Bifurcated part 79 Upper leg 80 Lower leg 85 Spring 86 Rolling element 88 Channel 89 Rotating Disc 90 Tubular Boss 92 Stop Pin 93 Spring 94 Control Rod 97 U-Shaped Spring 98 Antilock Picking Mechanism

Claims (16)

[Claims] 1. A lock bolt, a plurality of rotors each arranged to be independently rotated by a respective coding bit of a key, and a plurality of driven elements each movable by one of the rotors. A plurality of driven elements positioned to release the lock bolt by said separate rotation, and a rotor and a driven element such that the rotor is adjusted to receive different keys. A means for shutting off each other. 2. The lock according to claim 1, wherein the rotor and the driven element are interlocking cogwheels, and the breaking means is means for performing relative displacement of the rotational axis of the cogwheels. 3. The lock of claim 2 including a variable position anti-picking element that rides on the teeth of the cog wheel during rotation. 4. The lock of claim 3 including means for securing the anti-picking element if a lock bolt release force is applied when the rotor cogwheel does not rotate due to the lock bolt not being released. 5. A lock for use in a key having a stop bit and a series of radially projecting axially spaced coding bits on the shank, the stop bit and each coding bit comprising: Having a leading edge and a trailing edge, the leading edge of the coding bit is staggered with respect to each other to provide key coding, and the stop bit and the trailing edge of the coding bit form one side of an axially extending groove. And the lock is (a) a housing having a keyway with an inward radial key guide pin and a lock bolt opening, and (b) a key having an axial rotation axis and a series of cogwheels. An actuating cogwheel assembly, each cogwheel having a central opening coinciding with the keyway, each cogwheel having an inward radial key engagement projection, the insertion of a key into the housing. Coe A key actuated cogwheel assembly axially spaced to engage a ring bit, and (c) a driven cogwheel assembly having an axial rotation axis and comprising a series of cogwheels. , Each cogwheel has a slot and is axially spaced to mesh with a corresponding key actuated cogwheel, a driven cogwheel assembly, and (d) a retracted position and a protruding position relative to the housing. A lock bolt that can be reciprocated between the lock bolt, the retracted position and the projecting position corresponding to the unlocked and locked states of the lock, and (e) the lock bolt reciprocates between the retracted position and the projecting position. A lock actuation mechanism, i) the key actuated cogwheel assembly has a first actuation state corresponding to a locked state of the lock produced when the trailing edge of the stop bit is locked by the key guide pin. And each key actuating cogwheel is biased into the key insertion position by the trailing edge of the corresponding coding bit, in which position the key engagement projection is aligned with the key guide pin and is essentially the continuous chamber of the lock. And a key actuating cogwheel assembly has a second actuated state that occurs when the leading edge of the stop bit is locked by the key guide pin, and The driven cogwheel is rotated to its index position by the corresponding key-operated cogwheel to align with the slot and align the lock bolt with the lock bolt opening, allowing the lock bolt actuating mechanism to move the lock bolt in and out of the housing. A lock with a structure that prevents the key from coming out of the housing. 6. The lock of claim 5, wherein the key guide pin projects further radially inwardly than the key engagement projection to prevent rotation of the partially inserted key. 7. The lock according to claim 5, wherein the lock bolt is biased to the outermost protruding position when the lock is locked. 8. The lock bolt actuating mechanism is actuated by a second partial rotation of the key upon engagement to disengage the key from the cogwheel cogwheel by inward axial displacement of the key relative to the housing. Any of 7 tablets. 9. The lock bolt actuating mechanism is releasably locked to a locking position by a locking means, and the inward axial displacement of the key releases the locking means to lock the lock bolt operating mechanism to the locking position. The lock according to claim 8. 10. The lock of claim 9 wherein the locking means is spring loaded to bias the key outwardly of the housing in the second actuated state of the key actuated cogwheel assembly. 11. The lock bolt actuating mechanism is coupled to the lock bolt by an elastically flexible coupling.
0 locks. 12. On the other hand, when the insertion force is applied to the lock bolt in the retracting direction of the lock bolt into the housing,
Claim: Preventing rotation of a cogwheel of a key actuated cogwheel assembly, while preventing rotation of one or more cogwheels of a key actuated cogwheel assembly prevents forced insertion of a lock bolt into the housing. The tablet according to any one of Items 2 to 11. 13. An anti-lock picking mechanism comprising: a first member biased against a cogwheel of a key actuated cogwheel assembly to ride around it in a cyclic "out / on"motion; A second member having an end proximate to a rear portion of the bolt, the second member being biased to a first operating position during formation to allow the lock bolt to retract into the lock bolt recess, and the formation of the lock bolt. Has a second actuating position that prevents it from retracting into the lockbolt recess, the first member and the second member being joined together so as to be adjacent to the cog upon rotation of the cogwheel of the key actuated cogwheel assembly. When passing through the contour with the trough between the cogs, the first
13. The lock of claim 12, wherein the member has a cyclic "out / in" movement relative to the rotational axis of the key actuated cogwheel assembly and the end of the second member has a cyclic "up / down" movement. 14. The driven cog wheel assembly is laterally displaced relative to a key actuated cog wheel assembly permanently mounted to the housing and is disengaged therefrom for recoding the lock combination. The lock according to any of claims 2 to 13, which is possible. 15. The key has a stop bit and a series of radially projecting and axially spaced coding bits so that the stop bit and each coding bit have a leading edge and a trailing edge. The leading edge of the coding bit is staggered with respect to each other so as to obtain the coding of the key, and the stop bit and the trailing edge of the coding bit are aligned to form one side of the axially extending groove. A key used for the lock according to claim 1 or 5. 16. A "full" clockwise or counterclockwise rotation of the key cooperates with a key guide pin adapted to be a two step actuation, one step releasing the lock bolt and the other step retracting the lock bolt. The lock of claim 2, further comprising a guide structure.