JP3143402B2 - Disk lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk lock device used for various purposes such as a vending machine, a cash vending machine, a safe, a locker for rent, and the like. The present invention relates to a disk lock device in which operation is disabled.

[0002]

2. Description of the Related Art As a conventional disk lock device, a key in which a plurality of key ridges having different heights are arranged along a longitudinal direction, and a locking piece is rotated by inserting the key and rotating the key forward and backward. There is one that is configured by a combination with a lock body that performs locking and unlocking operations (Japanese Patent Application Laid-Open No. 62-63782). The lock body has an inner cylinder rotatably disposed inside an outer cylinder, and a plurality of disks and a lock rod for setting each state of locking and unlocking are loaded inside the inner cylinder. I have.

The outer cylinder has a lock rod engaging groove on the inner peripheral surface thereof.
Further, slits are provided in the inner cylinder, and concave portions are formed at different angles on the outer peripheral edge of each disk. At the time of locking, the concave portions of each disk are not aligned, and the lock bar is pushed up by the outer peripheral edge of each disk to be positioned between the engagement groove of the outer cylinder and the slit of the inner cylinder. Regulations.

The key operation for unlocking includes an idle rotation operation for releasing the lock of the inner cylinder by the lock rod and a main operation for rotating the latching piece together with the key operation after the release of the lock. First, when the key is inserted into the lock main body and the idle rotation operation is performed, each disk is sequentially hooked on the key pile of the key and sequentially rotates. As a result, when the concave portions of each disk are aligned, the lock bar falls down into the aligned concave portions and the engagement with the engagement groove of the outer cylinder is released. As a result, the inner cylinder is released from the restraint by the outer cylinder, and thereafter, the operation can be shifted to this operation.

However, in the disk lock device having the above structure, since the inner cylinder is loaded in the outer cylinder, and a plurality of disks are loaded in the inner cylinder, the internal structure becomes complicated, and the assembling is troublesome. And the production cost is high. In addition, since the discs are rotated sequentially to align the recesses, the rotation angle for the idle rotation operation becomes large and the operability is poor, and even if an inappropriate key is used, the idle rotation operation is required. Since the key can be turned only by the rotation angle of, there is a possibility that the key being used may be mistaken as an appropriate key.

Therefore, the inventor of the present invention eliminates the inner cylinder and directly loads a plurality of disks and lock rods for setting each state of locking and unlocking inside the cylindrical case of the lock body. At the same time, a disk lock device has been proposed in which a lock plate for engaging and disengaging the lock bar is provided outside the disks at both ends in a state where rotation is restricted (Japanese Patent Application No. 5-31).
No. 5911). In each of the disks, a support groove for supporting the lock rod and a concave portion in which the lock rod falls down are continuously formed at the same angular position on the outer peripheral edge. A step according to the height is formed.

In this disk lock device, when locking, the support grooves and recesses of all the disks are aligned, and the lock rod is located in the support groove of each disk and engages with the lock plate to lock each disk. It regulates the rotation of the disk. When the proper key is inserted into the lock body and the idle rotation operation is performed, at the predetermined angular position, each key peak simultaneously hits the corresponding step of the disk, and then all the steps are hooked at once and all the disks are Rotate all at once. By this pivoting operation, the support groove and the concave portion move while maintaining the aligned state, and when the concave portion reaches the position of the lock bar, the lock bar falls into the concave portion of each disk and is disengaged from the lock plate. As a result, each disk can be rotated together with the lock bar, and thereafter, the operation can be shifted to the main operation.

[0008]

However, in this disk lock device, the idling operation has been reduced and the operability has been improved.
Although the rotation angle has been reduced, the key can be turned only by the rotation angle for the idle rotation operation, so that the problem of misidentifying that the key being used is an appropriate key has not been completely solved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem. In addition to a normal disk, at least one disk for disabling a rotation operation by an incorrect key is provided, so that the disk is in use. It is an object of the present invention to provide a disk lock device which can immediately determine that the key is inappropriate.

[0010]

According to the disk lock device of the present invention, a key having different heights is provided in a plurality of rows along a longitudinal direction, and the key is inserted by inserting the key and rotating the key in the forward and reverse directions. It consists of a combination with a lock main body that performs locking and unlocking operations by reciprocating a stopper piece. The lock main body includes a plurality of first driving discs and at least one non-rotating first disc which are rotatably arranged inside the cylindrical case in a length direction corresponding to the number of key ridges of the keys. A second disk for proper operation regulation, a lock bar arranged orthogonal to each of the disks, and at least one lock plate arranged in the arrangement of the disks with the rotation restricted. The first disk has a key insertion hole formed in a plate surface, and a step portion at which a corresponding key peak of the key is hooked is formed at the same angular position, and a groove width corresponding to a diameter of the lock rod is formed on an outer peripheral edge. A support groove of a lock rod having a groove depth and a groove deeper than the groove depth of the support groove for rolling down the lock rod in the support groove are continuously formed at the same angular position. The second disk restricts the rotation of all the key ridges corresponding to the first disk into the key insertion holes formed in the plate surface, but the key pits corresponding to the second disk do not rotate. A notch allowing rotation of the first disk is formed in an angular range larger than the angular position of the step of the first disk,
The concave portion is formed on the outer peripheral edge at an angular position corresponding to the support groove of the first disk. Further, the lock plate engages with the lock bar when the lock bar is supported by the support groove of the first disk, and when the lock bar falls into the concave portion of each of the first and second disks. Is formed with a lock groove which is disengaged from the lock rod.

[0011]

When locking, all the first disks have the support grooves and the concave portions aligned in a line, the concave portions of the second disk are positioned corresponding to the support grooves of the first disk, and the lock rod is provided on the first disk. It is located in the support groove and above the recess of the second disk. When a proper key is inserted and rotated by a predetermined angle, each key peak simultaneously hits the corresponding step of the first disk, and thereafter, the steps are simultaneously hooked and all the first disks are simultaneously held. Rotate. At this stage, the key hill corresponding to the second disk idles in the cutout of the key insertion hole, and the second disk does not rotate. By the rotation operation of the key, the support groove and the concave portion of the first disk move while maintaining the aligned state, and when the concave portion reaches the position of the lock bar, the concave portion of the first disk and the concave portion of the second disk are moved. The recesses are aligned with each other, and the lock rods fall into the recesses of the first and second discs, disengage from the lock plate, and the first and second discs are integrated via the lock rods. When the lock rod is disengaged from the lock plate, the key can be further rotated, and the first and second disks can be simultaneously rotated in a state where the lock rod falls into the recess. The disk lock device is unlocked. If an incorrect key is inserted to rotate the key, any key corresponding to the first disk is positioned corresponding to the second disk, so that the key can enter the notch of the second disk. Without being caught immediately by the edge of the key insertion hole. However, since the lock bar is supported by the support groove of the first disk and is engaged with the lock plate, the rotation of the second disk is hindered, and the key cannot be rotated at all.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk lock device according to the present invention comprises a combination of a lock body and a key which can be unlocked in conformity with the lock body. As one embodiment, FIG. , FIG. 1 to FIG. 3 and FIG. 5 to FIG. 26 show the internal structure and each configuration of the lock body 1 respectively.

A key 2 shown in FIG. 4 has a tabular shape with a large width and a key piece 4 having a width smaller than that of the knob 3 and corresponding to the entire length of the lock body 1. Are integrally formed. The key piece 4 has a distal end portion 5 having a rectangular planar shape. When the key 2 is inserted into the lock main body 1, the distal end portion 5 abuts against a driving plate 16, which will be described later, and an engagement hole 44 is formed.
Engages.

On both sides of the key piece 4, a plurality of rows of key hills 6a to 6d having different heights are provided along the length direction. A stepped portion 7 corresponding to the front plate 9 is formed. The key mountains 6a to 6
Among the d, the key mountain 6a is the highest, and the following 6b, 6c, 6
The height of the key hill is reduced in the order of d. Although FIG. 5 shows an example in which the height of the key hill is set to four levels for ease of explanation, the key difference can be set more if the number of levels is further increased. Of the key mountains 6a to 6d, 6a
To 6c are driving first disks 50a to 50c to be described later.
c and the third disk 51 for picking prevention
"d" corresponds to the second disk 52 for restricting improper operation.

FIGS. 1 to 3 show the internal structure of the lock body 1, and include a cylindrical case 8, a front plate 9, a rear plate 10, first disks 50a to 50c, a second disk 52, and a third disk 52. Disk 51, a plurality of lock plates 12, lock rods 13, drive plates 16, etc. used as partition plates.
The first, second and third disks 50a to 50c, 5
2, 51 are arranged in the longitudinal direction of the cylindrical case 8 by a number corresponding to the number of key ridges of the key 2 in total.
The lock plate 12 is provided with the disks 50a to 50c, 5
One sheet is interposed between 2 and 51.

1 to 3, FIG. 1 shows the internal state of the lock body 1 at the time of locking, FIG. 2 shows the internal state of the lock body 1 at the time of unlocking, and FIG. Body 1
Are shown as longitudinal sectional views, respectively.
Further, FIGS. 5 to 7, FIGS. 9 to 11, and FIGS.
5 shows the internal state of the lock body 1 in the process from locking to unlocking, and FIGS. 8, 12 and 16 show the internal state of the lock body 1 at the time of unlocking, respectively. 3 is shown in a cross section orthogonal to the cross section direction. In particular, FIGS. 5 to 8 show the relationship between the first disk 50a and the lock rod 13, and FIGS. 9 to 12 show the third disk 51. 13 to 16 show the relationship between the second disk 52 and the lock bar 13, respectively.

The cylindrical case 8 is a cylindrical body having both ends opened, and has a support groove 17 formed at a predetermined angular position on the inner peripheral surface in the length direction over substantially the entire length. This support groove 17
Is for engaging a projection 18 provided on each lock plate 12 to be described later and fixing each lock plate 12 in a non-rotating state.

The front plate 9 comprises an end plate 20 fitted and fixed to the front opening of the cylindrical case 8 and a movable plate 21 rotatably connected to the inner surface of the end plate 20. so,
FIG. 17 shows the appearance of the end plate 20, and FIG.
1 are shown respectively.

A fitting hole 22 having a diameter corresponding to the width of the stepped portion 7 of the key 4 is formed at the center of the plate surface of the end plate 20, while the movable plate 21 on the end plate 20 side is formed. On the side surface, a fitting projection 25 is provided so as to be fitted into the fitting hole 22 so as to be freely pivotable. The fitting projection 25 has a rectangular key hole 23 formed along the diameter line. The key 2 is inserted into the key hole 23 to position the stepped portion 7 in the key hole 23. 2 is rotated.

The rear plate 10 is fitted and fixed to the rear opening of the cylindrical case 8, and a bearing hole 26 is formed at the center of the plate surface as shown in FIG. The bearing hole 26 is provided in the drive plate 1.
A drive shaft 27 that rotates together with the drive shaft 6 is rotatably supported, and a hook piece 28 is attached to the tip of the drive shaft 27. The latching piece 28 is disengaged from the fixed-side metal fitting and the like by forward and reverse rotation.

The driving plate 16 is, as shown in FIG.
In the center of the plate surface, an engagement hole 44 into which the tip 5 of the key 2 is inserted.
Is formed on the outer periphery, and a U
The groove 31 is notched. The U-shaped groove 31 is formed at a depth approximately twice the diameter of the lock rod 13.

The engagement hole 44 has contact edges 33S and 33E forming a predetermined angle θ. 1, 5, 9,
And when the key 2 is inserted in the locked state shown in FIG.
The tip 5 of the key 2 comes into contact with one contact edge 33S of the engagement hole 44. While the key 2 rotates by the angle θ in the unlocking direction B, the distal end portion 5 idles in the engagement hole 44, and FIG.
When the state shown in FIG. 14 is reached, the leading end portion 5 hits the other contact edge 33E, and thereafter the drive plate 16 is integrally rotated.

Next, the first disks 50a to 50c
Has a diameter substantially corresponding to the inner diameter of the cylindrical case 8, and the disk 50 a is
0b corresponds to the next highest key hill 6b, and the disk 50c corresponds to the next highest key hill 6c.
Deployed within. At the center of the plate surface of each of the first disks 50a to 50c, as shown in FIGS.
The key insertion hole 34 which can be inserted and removed is opened respectively. Each key insertion hole 34 has a hole side edge located in the locking direction A of the key 2 as a contact edge 35 for a return operation.
The stepped portions 36a to 36c on which the corresponding key peaks 6a to 6c of the key 2 are hooked are located at the same angular position as viewed from the center of the key insertion hole 34 at the hole side edge opposed to the key insertion hole, that is, the hole side edge located in the unlocking direction B. It is formed in α.

Further, all the first disks 50a to 50c
A support groove 37 for supporting the lock rod 13
Is formed. The support groove 37 has a depth and a width corresponding to the diameter of the lock rod 13, and when locking, the lock rod 13 is supported in a series of support grooves 37 aligned in a line. Adjacent to each support groove 37, a concave portion 39 having a width slightly larger than the diameter of the lock rod 13 and having a depth almost twice as large as the diameter of the lock rod 13 is continuously formed.

The second disk 52 is provided at least one (one in this embodiment) in the lock body 1.
It has a diameter and thickness equal to the first disks 50a-50c. The second disk 52 is provided in the lock body 1 so as to be located at the lowest key peak 6 d of the key 2. As shown in FIG. 25, a key insertion hole 34 through which the key piece 4 can be inserted and removed is formed in the center of the plate surface of the second disk 52. The key insertion hole 34 has a hole side edge located in the locking direction A of the key 2 as a contact edge 35 for the return operation, and a hole side edge located in the unlocking direction B corresponding to the second disk 52. The lowest key hill 6d is allowed to rotate,
For the key ridges 6a to 6c corresponding to the discs 50a to 50c, the notch 30 having a diameter for restricting rotation is formed in an angle range β larger than the angular position α of the stepped portions 36a to 36c of the first discs 50a to 50c. It is. At the outer peripheral edge of the second disk 52, the first disk 50a is positioned at an angular position corresponding to the support groove 37 of the first disks 50a to 50c.
A concave portion 39 'having the same configuration as the concave portion 39 of a to 50c is formed.

The third disk 51 is provided in the lock body 1 at least one (two in this embodiment).
It has the same diameter and thickness as the first discs 50a to 50c, and is disposed in the lock body 1 so as to correspond to a specific key ridge 6c of the key 2. As shown in FIG. 24, a key insertion hole 34 into which the key piece 4 can be inserted and removed is formed in the center of the plate surface of the third disk 51. The key insertion hole 34 is a key 2
The hole side edge located in the locking direction A of FIG.
5, a notch 32 having a height at which the corresponding key peak 6c of the key 2 is not hooked is formed on the side edge of the hole located in the unlocking direction B.
The first disks 50a to 50c are formed in an angle range β larger than the angular position α of the steps 36a to 36c. On the outer peripheral edge of each third disk 51, a first disk 50a is provided.
The concave portions 3 having the same configuration as the concave portions 39 of the first disks 50a to 50c are provided at angular positions corresponding to the support grooves 37 of the first to 50c.
9 'is also a recess 39 of the first discs 50a-50c.
The first disks 50a to 50c are located at angular positions corresponding to
The supporting groove 37 'having the same configuration as the supporting groove 37 is formed continuously.

At the time of locking, all the first disks 50a to 50a
0c support groove 37 and recess 39 are aligned in a line,
The support groove 37 'of the third disk 51 is
0a to 50c, the second and third disks 5
The first and second recesses 39 'are provided with first discs 50a to 50c.
Are respectively corresponding to the support grooves 37. When the appropriate key 2 is inserted and rotated in this state, first, all the first disks 50a to 50c are
Are rotated while maintaining the state of being aligned in a line, and the concave portion 39 and the concave portions 39 'of the second and third disks 52 and 51 are aligned. At this time, a series of aligned concave portions 39, 3
The lock bar 13 falls into 9 '.

The lock rod 13 is a round shaft slightly shorter than the length of the cylindrical case 8, and the first, second, and third disks 50 a to 50 are provided at the inner circumferential position of the cylindrical case 8.
c, 52, 51 are arranged orthogonally, and in the locked state,
It is supported on the support grooves 37 of the first disks 50a to 50c, and is located on the concave portions 39 'of the second disk 52 and the third disk 51.

The adjacent disks 50a to 50c, 52, 5
26, a ring-shaped lock plate 1 as shown in FIG.
2 is interposed as a partition plate so that each disk does not make surface contact with an adjacent disk. Each lock plate 12 has an outer diameter substantially corresponding to the inner diameter of the cylindrical case 8 and an inner diameter slightly larger than the maximum width of the key piece 4 of the key 2. A projection 18 for engaging with the groove 17 and fixing the lock plate 12 so as not to rotate is integrally provided with a projection, and is engaged with the projection 18 at a position facing the projection 18 in accordance with the vertical movement of the lock bar 13. A lock groove 41 is formed to come off. A guide side 42 of the lock bar 13 is formed on the inner peripheral edge of the ring that continues from one of the groove side edges of the lock groove 41, and the lock bar 13 is provided on the other groove side edge of the lock groove 41 in the direction of the guide side 42. Guide edge 4 inclined to guide
3 are formed.

When the lock bar 13 is locked and is supported in the support groove 37 of the first disks 50a to 50c, it is engaged in the lock groove 41, and the lock bar 13 is in the first position. , The second and third disks 50a to 50c,
When the lock rod 13 falls into the concave portions 39, 39 'of the 52, 51, it is disengaged from the lock groove 41, and the lock bar 13 is pushed out toward the guide side 42 by the guide edge 43. , 39 'and the guide side 42 while being constrained.

FIG. 27 shows another embodiment of the second disk 52, and FIG. 28 shows the second disk 52 of FIG.
1 shows an embodiment of a key 2 used in a disk lock device having a key. The second disk 52 shown in FIG.
A key insertion hole 34 through which the key piece 4 can be inserted and removed is provided.
The key insertion hole 34 has a hole edge located in the locking direction A of the key 2 as a contact edge 35 for the return operation, and a pair of arc-shaped notches 30, 30 formed in the hole side located in the unlocking direction B. Is formed. The notches 30, 30 extend over an angular range β larger than the angular position α of the first step portions 36a to 36c of the first disks 50a to 50c, respectively, and have a projection 46 between the notch 30 and the contact edge 35. Is formed. Second disk 5
No. 2 allows the rotation of the corresponding key hill, which will be described later,
The rotation of the key hills 6a to 6c corresponding to the disks 50a to 50c is restricted.

The key 2 shown in FIG. 28 has a rectangular opening 67a having a width slightly larger than the thickness of the second disk 52 at a position corresponding to the second disk 52 in FIG. The upper and lower portions are formed as engaging portions 67b, 67b. When the key 2 is inserted from the key hole 23 of the lock body 1 along the hitting edge 35 and rotated in the unlocking direction B, the upper and lower engaging portions 67b, 67b
30 and the protrusions 46 of the second disk 52 enter the opening 67a.
On the disc 52.

Next, the operation of the disk lock device having the above configuration will be described with reference to FIGS. 1 to 3 and FIGS. 5 to 8 show the stepped portion 36a of the first disk 50a.
Although the relationship between the key 2 and the key 2 is shown, the relationship between the step portions 36b and 36c of the other first disks 50b and 50c is the same, and is not shown here. 9 to 12 show the relationship between the key insertion hole 34 of the third disk 51 and the key 2, and FIGS. 13 to 16 show the relationship between the key insertion hole 34 of the second disk 52 and the key 2. The involvement is indicated respectively.

At the time of locking shown in FIGS. 1, 5, 9 and 13, the support grooves 37 and the concave portions 39 of the first disks 50a to 50c are aligned, and the second disk 52 and the third disk The concave portion 39 'of the disk 51 is provided in the support groove 37 of the first disk 50a to 50c, and the third disk 5
The one support groove 37 'is located in the concave portion 39 of each of the first disks 50a to 50c. At this time, the lock rod 13 is attached to the support groove 3 of each of the first disks 50a to 50c.
7, and is supported above the recess 39 'of the second and third disks 52, 51 and is engaged in the lock groove 41 of the lock plate 12 between the disks. Further, the key insertion hole 34 of each disk is provided with a contact edge 35 for a return operation.
Are aligned in a row, so that the key 2 can be inserted.

Now, when the appropriate key 2 is inserted through the key hole 23 of the front panel 9, the key piece 4 becomes the first and second disks 50a.
The leading end portion 5 of the key 2 abuts against the drive plate 16 and is located in the engaging hole 44. At this time, the stepped portion 7 of the key 2 is exactly fitted into the key hole 23 of the movable plate 21, and the key 2 has the tip 5 and the stepped portion 7 formed by the engagement hole 44 and the key hole 23. The lock body 1 is held, and a straight insertion state along the axial direction of the lock body 1 is maintained during the rotation operation.

Next, when the key 2 is rotated to the above-mentioned angular position α, the highest one of the key peaks 6a to 6d of the key 2 as shown in FIG. The key ridge 6b of the next height abuts against the first step 36a of the disk 50a, and the key ridge 6c of the next higher height corresponds to the first step 36b of the corresponding first disk 50b. The first discs 50c abut against the first step portions 36c, respectively.

At this time, in the key insertion hole 34 of the second disk 52, the angular position α of the first steps 36a to 36c is set.
Since the notch 30 is formed over a larger angle range β, as shown in FIG.
d enters the notch 30 and idles, and the second disk 5
2 does not rotate. Further, since the notch 32 is also formed in the key insertion hole 34 of the third disk 51 over an angle range β larger than the angle position α of the first step portions 36a to 36c, as shown in FIG. 2 corresponding key mountain 6c
Enters the notch 32 and idles, and the third disk 51
Also does not rotate.

When the key 2 is further rotated by a predetermined angle (when this angle is γ, γ = β−α), the key hills 6 a to 6 c
Are the steps 36a of the corresponding first disks 50a to 50c.
To 36c, and all the first disks 50a to 50c
0c are rotated simultaneously, and the first disks 50a to 50c
The support groove 37 and the concave portion 39 move toward the lock bar 13 while maintaining the aligned state. In this case, the key ridge 6d corresponding to the second disk 52 passes through the notch 30 and
The key hill 6c corresponding to the disk 51 moves to the inside of the notch 32, and the key 2 is moved to the second and third disks 52 and 51.
, The second and third disks 52 and 51 do not rotate. The lock bar 13 slides on the support grooves 37 of the first disks 50a to 50c arranged in a row while being positioned in the lock grooves 41 of the lock plates 12. First disks 50a to 50 aligned in a line
c, the concave portions 39 of all the first disks 50a to 50c and the concave portions 39 of the second and third disks 52 and 51 are aligned with each other when the concave portion 39 of the lock rod 13 reaches the angular position of the lock rod 13. 13, FIG. 7, FIG.
As shown in FIGS. 1 and 15, the lock rod 13 falls into the recesses 39 and 39 ′ of each of the disks 50 a to 50 c, 52 and 51, disengages from the lock groove 41 of each lock plate 12, and It is guided in the direction of 42. At this stage,
As shown in FIG. 15, the corresponding key ridge 6d of the key 2 is in contact with the terminal edge of the notch 30 of the second disk 52, and the key is attached to the terminal edge of the notch 32 of the third disk 51 as shown in FIG. The two corresponding key hills 6c abut.

When the key 2 is further rotated, as shown in FIGS. 3, 8, 12, and 16, the lock rod 13 is moved.
Rotates integrally with the first, second, and third disks 50a to 50c, 52, and 51 in a state of being dropped into the concave portions 39 and 39 ', and moves along the guide side 42 of each lock plate 12.

By the way, until the lock rod 13 is disengaged from the lock groove 41, the tip 5 of the key 2 is
, The drive plate 16 does not rotate, and the latch piece 28 does not operate. Key 2 is in angular position β
When the lock lever 13 is rotated to the point where the lock rod 13 and the lock groove 41 are disengaged from each other, the tip 5 of the key 2 comes into contact with the contact edge 33E of the engagement hole 44. Then, the latch piece 28 operates.

If an improper key is inserted to rotate in the unlocking direction B, the first disks 50a to 50c
Is located at the position corresponding to the second disk 52. The key insertion hole 34 of the second disk 52 is formed so as to regulate the rotation of the key ridges 6a to 6c corresponding to the first disks 50a to 50c. In the case of the second disk 52 shown in FIG. Is the key mountain 6a
27c are not able to enter the notch 30 and are caught on the side edge of the hole in the unlocking direction B. In the case of the second disk 52 shown in FIG. 27, the key peaks 6a to 6c abut the projections 46, 46. Thus, the second disk 52 is to be rotated. However, at this stage, all the disks 50a to 50c, 5
The recesses 39 and 39 'of the first and second discs 50a to 50c are supported on the support grooves 37 of the first discs 50a to 50c while being engaged in the lock grooves 41 of the lock plate 12. , So I can't do any rotation.

Next, if all the disks 50a to 50c, 52, 51 are rotated by a predetermined angle γ in the same direction using a wire-like tool for picking, the first disks 50a to 50c are When the concave portion 39 reaches the angular position of the lock rod 13, the third disk 51
The position of the concave portion 39 ′ is shifted, and the support groove 37 ′ is positioned corresponding to the lock rod 13. For this reason, the lock rod 13
Is in the support groove 37 'of the third disk 51,
Are located above the concave portions 39 of the disks 50a to 50c,
It is supported in the lock groove 41 of the lock plate 12 in an engaged state,
The locked state is maintained.

Next, when the appropriate key 2 is rotated in the locking direction A, the key piece 4 is moved to the first, second, and third disks 50a to 50a.
c, 52, and 51, after idling in the key insertion hole 34 by the angle α, the respective key hills 6a, 6b, and 6c are moved to the first disks 50a to 50c.
The first discs 50a to 50c are simultaneously rotated by hooking the contact edge 35 for the return operation of 50c. At this time,
Key hill 6 corresponding to each of the second and third disks 52 and 51
Although d and 6c have not reached the contact edge 35 for the return operation, the first, second and third disks 50a to 50c and 5c
2, 51 are lock rods 13 engaged with the concave portions 39, 39 '.
And the second disk 52 and the third disk 51 are also integrated with the first disks 50a to 50a.
Cooperates with c. Further, since the lock bar 13 is restrained in the recesses 39, 39 'by the guide side 42 of each lock plate 12, the first, second and third disks 50a to 50c, 5
It rotates integrally with 2,51. Further, since the lock bar 13 is engaged with the U-shaped groove 31, the first, second and second drive plates 16 are also provided.
The third discs 50a to 50c, 52, and 51 rotate integrally with each other, and the engaging piece 28 operates in the opposite direction.

When the lock rod 13 reaches the position of the lock groove 41 of each lock plate 12, the restraint by the guide side 42 is released, so that the lock rod 13 can escape into the lock groove 41. On the other hand, the key piles 6a, 6b, 6c of the key 2
Are caught on the contact edges 35 for the return operation of all the first disks 50a to 50c, so that the first, second and third
All the disks 50a to 50c, 52, and 51 continue to rotate, whereby the lock bar 13 moves the first disks 50a.
Riding on the support groove 37 of the lock groove 41
And all the first, second and third disks 50a
50c, 52, and 51 return to their original locked positions.

In the above embodiment, the second disk 51
Is formed in the angle range β, so that the concave portions 39, 3 of all the disks 50a to 50c, 52, 51 are formed.
9 'is located at the position corresponding to the lock rod 13, and when the lock rod 13 is disengaged from the lock groove 41, the corresponding key mountain 6d
Is designed to catch on the second disk 51,
The angle range of the notch 30 may be set to be larger than β.

[0046]

As described above, the present invention provides an improper key by disposing a second disc for disabling rotation operation by an improper key in addition to the first disc for driving. When the second disk is inserted and rotated, the second disk immediately regulates the rotation of the lock. Therefore, even if an incorrect key is inserted and operated, any rotation operation is performed. And the user can immediately determine that the key being used is incorrect.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an internal structure of a lock body according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an internal state of the lock main body at the time of unlocking.

FIG. 3 is a longitudinal sectional view showing an internal state of the lock main body at the time of unlocking.

FIG. 4 is a front view showing the appearance of the key.

FIG. 5 is a cross-sectional view showing a relationship between a first disk and a lock rod at the time of locking.

FIG. 6 is a cross-sectional view illustrating a relationship between a first disk and a lock bar during an unlocking operation.

FIG. 7 is a cross-sectional view illustrating a relationship between a first disk and a lock rod when unlocking is performed.

FIG. 8 is a cross-sectional view showing a relationship between a first disk and a lock bar at the time of unlocking.

FIG. 9 is a cross-sectional view showing a relationship between a third disk and a lock rod at the time of locking.

FIG. 10 is a cross-sectional view showing a relationship between a third disk and a lock rod during an unlocking operation.

FIG. 11 is a cross-sectional view showing a relationship between a third disk and a lock bar when unlocking is performed.

FIG. 12 is a cross-sectional view showing a relationship between a third disk and a lock rod at the time of unlocking.

FIG. 13 is a cross-sectional view showing a relationship between a second disk and a lock rod at the time of locking.

FIG. 14 is a cross-sectional view showing a relationship between a second disk and a lock rod during an unlocking operation.

FIG. 15 is a cross-sectional view showing a relationship between a second disk and a lock rod when unlocking is performed.

FIG. 16 is a cross-sectional view showing a relationship between a second disk and a lock bar at the time of unlocking.

FIG. 17 is a front view showing the appearance of the end plate of the front plate.

FIG. 18 is a front view showing the appearance of the movable plate of the front plate.

FIG. 19 is a front view showing the appearance of a rear plate and a driving plate.

FIG. 20 is a front view showing the appearance of the driving plate.

FIG. 21 is a front view showing the appearance of the first disk.

FIG. 22 is a front view showing the appearance of the first disk.

FIG. 23 is a front view showing the appearance of the first disk.

FIG. 24 is a front view showing the appearance of a third disk.

FIG. 25 is a front view showing the appearance of a second disk.

FIG. 26 is a front view showing the appearance of the lock plate.

FIG. 27 is a front view showing another example of the second disk.

FIG. 28 is a front view of a key used in the disk lock device having the second disk of FIG. 27;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock main body 2 Key 6a, 6b, 6c, 6d Key pile 8 Cylindrical case 12 Lock plate 13 Lock rod 16 Drive plate 28 Latch piece 34 Key insertion hole 36a, 36b, 36c Step 30, 32 Notch 37, 37 'Support Grooves 39, 39 'recesses 41 Lock grooves 44 Engagement holes 50a to 50c First disk 52 Second disk

Claims (1)

(57) [Claims] A key in which a plurality of key ridges having different heights are arranged along a length direction, and a locking piece is reciprocated by inserting and reversing a key to lock and unlock the key. In a disk lock device comprising a combination with a lock body to be locked, the lock body is provided in a cylindrical case with a plurality of pieces arranged in a length direction in a length direction corresponding to the number of key ridges of the key so as to be freely rotatable. A first drive disc and at least one second disc for restricting improper operation, a lock rod arranged orthogonally to each of the discs, and an arrangement of the discs in a state where rotation is regulated. The first disk is provided with at least one lock plate. The first disk has a key insertion hole formed in the plate surface, and a step portion at which a corresponding key peak of the key is hooked is formed at the same angular position. Is equivalent to the diameter of the lock rod. The support groove of the lock rod having the groove width and the groove depth, and the concave portion deeper than the groove depth of the support groove for rolling down the lock rod in the support groove are continuously formed at the same angular position. The second disk restricts the rotation of all the key ridges corresponding to the first disk through the key insertion holes formed on the plate surface, but the key pit corresponding to the second disk does not. A notch allowing rotation of the first disk is formed in an angle range larger than the angular position of the step of the first disk, and the concave portion is formed on the outer peripheral edge at an angular position corresponding to the support groove of the first disk. The lock plate is engaged with the lock bar when the lock bar is supported by the support groove of the first disk, and the lock bar is formed in the concave portion of each of the first and second disks. The lock groove that comes off the lock bar when it falls Disk lock device comprising been.