JPH07269188A - Disk lock device - Google Patents

Abstract

PURPOSE:To simplify structure, reduce the number of parts, and facilitate assembling work by eliminating an inner cylinder and a special member which disengages a lock bar. CONSTITUTION:A disk lock device comprises a key 2 and a lock body 1 combined. The body 1 is provided with a plurality of disks 50a through 50c, 51a through 51c, and 52a through 52c, a lock bar 13, and a plurality of partition plates 12a through 12c in a cylindrical case 8. A support groove and a recessed section are formed side by side at the external peripheral edge of each disk, and a lock groove and a guide groove are continuously formed in the external peripheral edge of each partition plate. When locked, the lock bar 13 is positioned in the support groove to be engaged with the lock groove. When the key 2 is inserted and turned, each disk is turned in a body with the support groove and recessed section unscrambled in a raw, and when the lock bar 13 fails in the recessed section, the lock bar 13 and the lock groove are disengaged from each other.

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 applied to various applications such as a vending machine, an automatic teller machine, a safe, and a locker for lending.

[0002]

2. Description of the Related Art As a conventional disk lock device of this kind, a combination of a key having a plurality of key ridges having different heights and a lock main body that is locked and unlocked by inserting the key and rotating the lock in the forward and reverse directions is used. There are things that consist of. The lock body has an inner cylinder rotatably arranged inside an outer cylinder, and is adjacent to a plurality of discs each having a key insertion hole that engages with each key crest of the key inside the inner cylinder. A plurality of partition plates that are interposed between the disks in a state where rotation is restricted, and a disk and a lock rod that is arranged orthogonal to the partition plates are loaded.

The outer cylinder is provided with an engaging groove for the lock rod on the inner peripheral surface and a slit groove on the inner cylinder, and the outer peripheral edge of each disk is formed with a concave portion at a different angle. Has been formed. At the time of locking, the positions of the recesses of the respective disks are not aligned, and the lock bar is positioned between the engaging groove of the outer cylinder and the slit groove of the inner cylinder to restrict the rotation of the inner cylinder. When the discs are sequentially rotated by the unlocking operation, the recesses of the discs are aligned, and the locking rods fall into the aligned recesses to disengage from the engagement grooves of the outer cylinder. You will be released from bondage.

[0004]

However, in the disk lock device having the above-mentioned structure, the inner cylinder is housed in the outer cylinder, and a plurality of disks are housed in the inner cylinder. It becomes complicated, the number of parts is increased, labor is required for assembly, and the manufacturing cost is high. Further, in the disk lock device having the above configuration, the key difference between the keys is realized by changing the height of each key mountain. However, if the height of the key mountain is set in multiple stages, the key having a shape corresponding to the height of each key mountain is formed. It is necessary to manufacture many kinds of discs with insertion holes,
The manufacturing cost of the disk is high, and there is a limit to increase the number of key differences.

In the present invention, the inner cylinder interposed between the outer cylinder and the disk causes the structure to be complicated.
From this point of view, by eliminating this inner cylinder, an inexpensive disk locking device that simplifies the structure, reduces the number of parts, facilitates assembly work, and improves operability during locking and unlocking The purpose is to provide. Another object of the present invention is to provide a partition plate interposed between adjacent disks with means for engaging and disengaging the lock rod, thereby simplifying the structure, reducing the number of parts, and facilitating assembly work. It is a point to provide a disk lock device which is further improved. Another object of the present invention is to provide a disk lock device capable of significantly increasing the number of key differences at a low manufacturing cost by changing the length and interval of each key crest of the key.

[0006]

DISCLOSURE OF THE INVENTION A disk lock device according to the present invention has a key having a plurality of key ridges having different heights, and a lock which is locked and unlocked by inserting the key and rotating the lock in the forward and reverse directions. It consists of a combination with the main body. The lock body has a cylindrical case having a key hole, a plurality of discs rotatably arranged inside the cylindrical case, and orthogonally arranged at the inner circumferential position of the cylindrical case with each disc. A lock bar, a plurality of partition plates arranged in a state where rotation is restricted between adjacent disks, and a tip of a key rotatably arranged inside the cylindrical case, which can be engaged and disengaged. And a drive plate. Each of the partition plates has a key insertion hole in the center of the plate surface, and an outer peripheral edge has a lock groove that engages and disengages with the lock rod according to the vertical movement of the lock rod, and a lock rod according to the movement of the lock rod. And a guide groove for slidably supporting it are formed in series. Each of the above-mentioned disks has a key insertion hole at the center of the plate surface, and a step portion having a height corresponding to the height of the key crest of the key is formed in the key insertion hole, and the partition is provided on the outer peripheral edge. A support groove of the lock rod having a groove depth corresponding to the lock groove of the plate and a recess having a groove depth corresponding to the guide groove of the partition plate are formed adjacent to each other at the same angular position.

In the disk lock device according to a second aspect of the present invention, the key has a plurality of key ridges having different heights and lengths, and each disk is a key inserted in a cylindrical case. It is positioned so as to correspond to the key crests, and the thickness of each disk corresponds to the length of each key crest.

In the disk lock device according to a third aspect of the present invention, the key has a plurality of key ridges having different heights and intervals, and each of the disks has a key ridge of a key inserted in a cylindrical case. The thickness of each partition plate is made to correspond to the interval of each key crest.

In the disk lock device according to a fourth aspect of the present invention, the key has a plurality of key ridges having different heights, lengths, and intervals, and each of the disks is inserted into a cylindrical case. The key is located corresponding to each key crest, the thickness of each disk corresponds to the length of each key crest, and the thickness of each partition plate corresponds to the interval between the key crests.

[0010]

When locked, the support grooves and recesses of all the disks are aligned, the lock rods are located in the support grooves of each disk, and engage with the lock grooves of each partition plate. When a key is inserted and a turning operation is performed by a predetermined angle, the respective key ridges simultaneously hit the stepped portions of the corresponding discs, and all the discs are turned simultaneously by hooking the stepped portions at the same time. By this rotation operation, the support groove and the concave portion are moved in the aligned state, and at the position of the lock rod, the lock rod falls into the concave portion of each disk, and at the same time, the engagement with the lock groove of each partition plate is released. When the key is further rotated, the lock rod moves integrally with the rotation of each disc in the state of falling in the recess, and slides in the guide groove of each partition plate to release the lock.

In the disk lock device according to the second aspect of the present invention, the key changes the length of the key peak, while the thickness of each disk corresponds to the length of each key peak, so the shape of the key insertion hole of each disk is changed. The number of key differences can be increased without doing so. Further, in the disk lock device according to the third aspect of the present invention, the key changes the interval of the key ridges, while the thickness of each partition plate corresponds to the interval of the key ridges. Therefore, similarly, the shape of the key insertion hole of each disk is changed. The number of key differences can be increased without doing so. Further, in the disk lock device according to claim 3, the key changes the length and interval of the key crests, while each disk corresponds to the thickness of each key crest, and each partition plate corresponds to the thickness to the interval of each key crest. Since it is made, without changing the shape of the key insertion hole of each disk,
The number of key differences can be further increased.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk lock device according to the present invention comprises a combination of a key and a lock body. As one embodiment of the disk lock device, the appearances of the key 2 and the master key 60 are shown in FIGS.
The internal structure and each configuration of the lock body 1 are shown in other drawings except FIG.

The key 2 shown in FIG. 2 (1) is in the form of a flat plate, and has a knob portion 3 having a large width and a key portion having a width smaller than the knob portion 3 and corresponding to the entire length of the lock body 1. Board 4
And are integrally formed. When the key 2 is inserted into the lock body 1, the key plate portion 4 has a front end portion 5 that engages with an engagement hole 32 of a drive plate 16 described later.

A plurality of key ridges 6a, 6b, 6c having different heights and lengths are provided on both sides of the key plate portion 4 at different intervals in the length direction, and the knob portion 3 of the key plate portion 4 is provided. Stepped portions 7A and 7B that are located near the position of the front plate 9 of the lock body 1 when the key 2 is inserted into the lock body 1 are formed in the vicinity of.

Of the key mountains 6a, 6b, 6c, the key mountain 6
a is the highest, key mountain 6b is next, and key mountain 6c is the lowest. The highest key ridges 6a on both sides are aligned with the stepped portion 7B of the tip 5, and the lowest key ridges 6c are aligned with the groove bottom between the key ridges and the stepped portion 7A. The figure shows an example in which the height, the length, and the interval of the key crests are set in each of three steps for ease of explanation. However, if the number of steps is further increased, the number of key differences is further increased. Can be set. The length of each of the key crests 6a, 6b, 6c corresponds to the thickness of each disk described below, and the interval between each key crest corresponds to the thickness of each partition plate described below.

The master key 60 shown in FIG. 2B is
A key capable of unlocking a plurality of lock main bodies 1 having different keys, including a knob portion 61 having a large width and a width smaller than the knob portion 61 and having a length corresponding to the entire length of the lock body 1. And a key board portion 62. The master key 60 is divided into two in the length direction from the key plate portion 62 to the knob portion 61. One of the divided key pieces 60A is stored by a specific person, and the other key piece 60B is stored by another specific person. Only when the key pieces 60A and 60B are combined, the master key 60 is stored. Can be operated.

A plurality of key ridges 64 having the same height as the highest key ridge 6a of the key 2 is provided on the side of one key piece 60B, and the most key 2 of the key 2 is provided on the side of the other key piece 60A. A plurality of key ridges 64 having the same height as the high key ridges 6a and a plurality of key ridges 65 set higher than the key ridges 64 are respectively arranged in the length direction. The positions and intervals of the respective key crests 64 and 65 correspond to the positions of the respective key crests 6a, 6b and 6c of the key 2 and the intervals between the key crests, and the lengths of the respective key crests 64 and 65 correspond to those of the key 2. It matches the length of the key mountains 6a, 6b, 6c.

In the figure, 66A and 66B are stepped portions formed in the vicinity of the knob portion 61, and are positioned corresponding to the front plate 9 of the lock body 1 when the key 2 is inserted into the lock body 1. The tip portion 63 of the key plate portion 62 has the heights aligned with the key crests 64 and the stepped portions 66B on both sides. Each key mountain 64,65
The length of each key is the thickness of each disk described later, and each key mountain 6
As in the case of the key 2, the intervals of 4,65 correspond to the thickness of each partition plate described later.

FIG. 1 shows the internal structure of the lock body 1, which is a cylindrical case 8, a front plate 9, a rear plate 10, and a plurality of disks 50a-50c, 51a-51c, 52a-52.
c, a plurality of partition plates 12a to 12c, a lock rod 13, a drive plate 16 and the like. Since the lock body 1 does not have a structure corresponding to a conventional inner cylinder and does not use a spring or the like, the structure is simplified, the number of parts is reduced, the assembling work is facilitated, and the failure factors are reduced. Has been. Moreover, when unlocking and locking the key 2 only has to be rotated by approximately 90 degrees, and the operability is greatly improved as compared with the conventional one.

FIG. 1 is a longitudinal sectional view showing the internal state of the lock body 1 when locked. 3 to 5 show the internal state of the lock main body 1 in the process from locking to unlocking, and FIG. 6 shows the internal state of the lock main body 1 at the time of unlocking, respectively. It is shown in a cross-section in a direction orthogonal to. The cylindrical case 8 is a cylindrical body with both ends open, and a support groove 17 is formed in a longitudinal direction over substantially the entire length of the inner peripheral surface at a predetermined angular position. This support groove 1
A protrusion 18 provided on each of the partition plates 12a to 12c, which will be described later, is engaged with the partition 7, and thereby each partition plate 12a to 12c is provided.
c is fixed in a state where it does not rotate.

The front plate 9 is composed of an end plate 20 fitted and fixed in the front opening of the cylindrical case 8 and a movable plate 21 rotatably supported on the inner surface of the end plate 20. 8 shows the outer appearance of the end plate 20, and FIG. 9 shows the outer appearance of the movable plate 21. A key insertion hole 22 having a diameter corresponding to the width of one stepped portion 7A of the key 2 is formed in the center of the plate surface of the end plate 20, and a rectangular shape is formed at a diagonal position of the key insertion hole 22. The notches 22A and 22B are formed. The distance L between the notches 22A and 22B is equal to the width D of the tip portions 5 and 63 of the key 2 and the master key 60. Therefore, in the master key 60, there is a key mountain 65 projecting higher than the tip portion 63, so that it is impossible to insert the key pieces 60A and 60B into the key insertion hole 22 in a coupled state.

On the side surface of the movable plate 21 on the side of the end plate 20, a fitting projection 25 is fitted in the fitting hole 22 so as to be freely pivoted.
Is projected. Also, the movable plate 21 is provided with the fitting protrusion 2
A rectangular key hole 23 that divides 5 into two is opened along the diameter line, and the key 2 is inserted into this key hole 23, and the stepped portion 7 is formed.
When B is positioned in the keyhole 23 and the key 2 is rotated, the key 2
The movable plate 21 rotates together with the movable plate 21.

The rear plate 10 is fitted and fixed in the rear opening of the cylindrical case 8, and a bearing hole 26 is formed in the center of the plate surface. The bearing hole 26 rotatably supports a drive shaft 27 that rotates integrally with the drive plate 16, and a latching piece 28 is attached to the tip of the drive shaft 27. This hanging piece 28
Is engaged with and disengaged from the fixed side metal fittings by forward and reverse rotation.

The drive plate 16 is, as shown in FIG.
It has a cross shape, and the lock bar 13 is provided on the outer periphery of the piece.
The U-shaped groove 31 for supporting the is cut out. This U-shaped groove 3
1 is formed at a depth approximately twice the diameter of the lock rod 13. The key 2 and the master key 6 are provided at the center of the plate surface of the drive plate 16.
An engaging hole 32 into which the respective 0, 5 and 63 are engaged is formed. The engagement hole 32 is provided with contact edges 33S and 33E forming a predetermined angle θ, and when the key 2 is inserted in the locked state shown in FIGS. 1 and 3, the tip portion 5 of the key 2 is engaged. The one contact edge 33S of the hole 32 abuts. While the key 2 is rotated in the unlocking direction B by the angle θ, the tip 5 is engaged with the engaging hole 3
When it spins in 2 and reaches the state shown in FIG.
Hits the other contact edge 33E, and then the drive plate 16 is rotated integrally.

Next, each of the disks 50a-50c, 5
1a to 51c and 52a to 52c have a diameter substantially corresponding to the inner diameter of the tubular case 8, and as shown in FIGS. 11 to 13, a key insertion hole 34 into which the key 2 can be inserted and removed at the center of the plate surface. Have been opened respectively. Each of the disks 50a-50c,
The key insertion holes 34 of 51a to 51c and 52a to 52c have a hole side edge located in the locking direction A of the key 2 as a contact edge 35 for returning operation, and a hole side edge opposite to the contact edge 35, that is, a unlocking edge. At the side edge of the hole located in the lock direction B, the key crests 6a of the key 2 are provided.
6c and stepped portions 36a to 36c having a height corresponding to the height of the key crest 64 of the master key 60 are formed at the same angle α when viewed from the center of the key insertion hole 34. For the disc 50a, the key mountain 6 from which the master key 60 projects
5, the step portion 36d having a height corresponding to the height of the disk 5
For 0b and 50c, the stepped portion 36e having a height corresponding to the height of the key mountain 64 of the master key 60 has a contact edge 35, respectively.
Is formed at a substantially intermediate position between the step portion 36a and the step portion 36a.

Each disk 50a-50c, 51a-51
The thickness of each of c and 52a to 52c is set in three stages, for example. The subscript a means a thick disc, the subscript b means a medium-thick disc, and the subscript c means a thin disc. The key difference is increased by increasing the number of steps of this thickness. Can be increased. The lock body 1 of this embodiment includes nine kinds of discs 5 in total.
0a to 50c, 51a to 51c, 52a to 52c are built in.

Further, all the disks 50a-50c, 51
Support grooves 37 for supporting the lock rod 13 are formed on the outer peripheral edges of the a-51c and 52a-52c. The support groove 37 has a depth corresponding to the diameter of the lock bar 13, and when locked, the lock bar 13 is inserted into a series of support grooves 37 aligned in a row when locked.
Is supported. Adjacent to each support groove 37 is a recess 39 having a depth approximately twice the diameter of the lock bar 13. When locked, the support grooves 37 and the recesses 39 of each disk are aligned in a row, and when the proper key 2 is inserted and rotated in this state, all the disks maintain the support groove 37 and the recesses 39 aligned in a row. While still rotating, the lock rod 13 falls into the series of recesses 39 that are aligned.

The lock bar 13 is a round shaft body slightly shorter than the length of the cylindrical case 8, and the disks 50a-50c, 51a-51c, and 51a-51c are provided at the inner peripheral position of the cylindrical case 8.
The disks 52a to 52c are disposed orthogonally to each other and are supported on the support groove 37 of each disk.

Partition plates 12a, 12b, 12c having a thickness corresponding to the intervals of the key crests of the key 2 are interposed between the adjacent disks so that each disk does not come into surface contact with the adjacent disk. In this embodiment, partition plates 12a to 12c having three stages of thickness are used, 12a is a partition plate having a large thickness, 12b is a partition plate having a medium thickness, and 12c is a partition plate having a small thickness. The key difference can be increased by setting a large number of steps of this thickness.

On the outer peripheral edge of each partition plate 12a, 12b, 12c, as shown in FIG. 14, a lock groove 41 engaging and disengaging with the lock rod 13 in accordance with the vertical movement of the lock rod 13, and a movement of the lock rod 13. Accordingly, an arcuate guide groove 45 for slidably supporting the lock rod 13 is formed in series. The lock groove 41 is formed to have a groove depth corresponding to the support groove 37 of the disc, and the guide groove 45 is formed to have a groove depth corresponding to the recess 39 of the disc. One side edge of the lock groove 41 is formed. Has a guide edge 43 that is inclined to guide the lock bar 13 to the guide groove 45. Further, each partition plate 12a, 12b, 12c is a support groove 1 for the cylindrical case 8.
7, and a key insertion hole 40 having the same shape as the key insertion hole 22 of the end plate 20 is formed on each plate surface.

The lock bar 13 has a support groove 3 for the disk.
When in the state of being supported in 7, each partition plate 12a,
When the lock bar 13 is located in the lock groove 41 of the lock rods 12b and 12c and the lock bar 13 falls into the recess 39, the lock groove 41 is disengaged, and the guide edge 43 guides the lock bar 13 toward the guide groove 45. After being pushed out, it moves along the guide groove 45 while being bound in the guide groove 45 of each partition plate 12.

Next, the operation of the disk lock device having the above construction will be described with reference to FIGS. 1 and 3 to 6. 3 to
In FIG. 6, the step portion 36a of the disks 50a to 50c and the key 2 are shown.
The relationship with the other disks 51a to 51 is shown.
The same applies to the relationship between the key 2 and the steps 36b and 36c of c and 52a to 52c, and the illustration thereof is omitted here.

When locking as shown in FIGS. 1 and 3, the support grooves 37 and the recesses 390 of the disks 50a to 50c, 51a to 51c, 52a to 52c are aligned in a row, and at this time, the lock rod 13 is a support groove of each disk. It is supported in 37 and engaged with the lock groove 41 of each of the partition plates 12a to 12c. The key insertion hole 34 of each disk is
Since the hitting edges 35 for the return operation are aligned in a line, the key 2
Is allowed to be inserted.

Now, the key insertion hole 22 and the key hole 2 of the front plate 9
When the proper key 2 is inserted from 3, the key plate portion 4 penetrates the key insertion hole 34 of each disk 50a-50c, 51a-51c, 52a-52c and each partition plate 12a-12c,
The tip 5 of the key 2 reaches into the engagement hole 32 of the drive plate 16.
At this time, the stepped portion 7A of the key 2 is positioned in the key insertion hole 22 of the end plate 20, and the stepped portion 7B is positioned in the key hole 23 of the movable plate 21.

Next, when the key 2 is rotated by the above-mentioned angle α, the highest key mountain 6a among the key mountains 6a to 6c of the key 2 corresponds to the respective discs 50 as shown in FIG.
The key crest 6b, which abuts on the stepped portion 36a of the a to 50c, and the middle height is the stepped portion 36b of the corresponding discs 51a to 51c, and the lowest key crest 6c is the stepped portion 36c of the corresponding discs 52a to 52c. To each of them.

When the key 2 is further rotated by a predetermined angle (β = θ-α where β is this angle), the respective key crests 6a-
6c hooks the corresponding step portions 36a to 36c to rotate all the discs at the same time, and the supporting groove 37 and the recess 39
Moves toward the lock bar 13 while maintaining the aligned state. At this time, the lock bar 13 has the partition plates 12a to 12c.
The support grooves 37 are slid on the support grooves 37 aligned in a line while being engaged with the lock grooves 41 of FIG. When the recesses 39 aligned in a row reach the angular position of the lock rod 13, as shown in FIG. 5, the lock rods 13 fall into the recess 39, and the partition plates 12a to 12a.
The engagement of 12c with the lock groove 41 is released, and the guide groove 45 is guided in the direction of the guide groove 45. In FIG. 1, the position of the lock bar 13 at this time is shown by a chain line.

When the key 2 is further rotated, as shown in FIG. 6, all the disks 50a to 50c, 51a to 51c and 52a to the lock bar 13 are engaged with the recess 39.
It rotates integrally with 52c and moves along the guide groove 45 of each partition plate 12a-12c.

By the way, until the lock rod 13 and the lock groove 41 are disengaged from each other, the front end portion 5 of the key 2 is driven by the drive plate 16.
The drive plate 16 does not rotate and the latching piece 28 does not operate because the drive plate 16 idles in the engaging hole 32. When the lock rod 13 and the lock groove 41 are disengaged from each other, the tip portion 5 of the key 2 comes into contact with the contact edge 33E of the engagement hole 32, and thereafter the drive plate 16 is integrally rotated and latched. Piece 28 is activated.

Next, if an improper key is inserted and rotated, the respective key crests do not abut the corresponding step portions at the same time, so that all the disks 50a-50c, 51a-51.
The c, 52a to 52c do not rotate at the same time, and the alignment of the support groove 37 and the recess 39 is broken. As a result, the lock bar 13 does not fall into the recess 39 of each disc, and remains engaged with the lock groove 41, so that the key cannot be rotated any more.

Next, when the proper key 2 is rotated in the locking direction A, the key crests 6a to 6c of the key 2 are moved to the discs 50a to 50c.
The disks 35, 51a to 51c, 52a to 52c are hooked on the contact edges 35 for the returning operation to rotate the disks all at once.
In this case, the disks 50a-50c, 51a-51
c, 52a to 52c are lock bars 13 engaged with the recess 39
, And the lock bar 13 is constrained in the recess 39 by the guide groove 45 of each of the partition plates 12A to 12c, so that all the disks 50a to 50c,
It rotates integrally with 51a to 51c and 52a to 52c. Further, since the lock rod 13 of the drive plate 16 is also engaged with the U-shaped groove 31, the drive plate 16 rotates integrally with the disc, and the latching piece 28 operates in the opposite direction.

When the lock rod 13 reaches the position of the lock groove 41 of each of the partition plates 12A to 12c, the restraint by the guide groove 45 is released, so that the lock rod 13 can escape into the lock groove 41. . On the other hand, all key mountains 6 of key 2
Since a to 6c are engaged with the contacting edges 35 for the returning operation of all the disks, all the disks continue to rotate, so that the lock bar 13 gets on the support groove 37 of each disk. , The partition plates 12A to 12c are engaged in the lock grooves 41, and all the disks are returned to their original locking positions.

Next, the operation of this disk lock device using the master key 60 will be described with reference to FIG. Although FIG. 7 shows the relationship between the step portion 36d of the disks 50a to 50c and the master key 60, the other disks 51a to
The same applies to the relationship between the stepped portions 36e of 51c and 52a to 52c, and the illustration thereof is omitted here. At the time of locking shown in FIG. 7, each disk 50a-50c, 51a-51
The support grooves 37 and the recesses 39 of c, 52a to 52c are aligned in a row, and at this time, the lock rod 13 is supported in the support groove 37 of each disk and each partition plate 12a to 12c.
It is in a state of being engaged in the lock groove 41 of c.

Further, since the key insertion holes 34 of each disk have the contact edges 35 for returning operation aligned in a line, the master key 60 is in a state where the insertion of the master key 60 is permitted.
Since the key crests 65 of the master key 60 protrude, it is impossible to insert the master key 60 into the key insertion hole 34, the key insertion hole 22 and the key hole 23 of the front plate 9 with the key pieces 60A and 60B coupled together. .

Therefore, first, one key piece 60A is inserted into the lock main body 1, and then the other key piece 60B is inserted into the lock main body 1 to be coupled with the key piece 60B inside the lock main body 1. In this state, the key board portion 62 has the disks 50a to 50c, 51a.
Through 51c and 52a through 52c, the leading end portion 63 of the master key 60 is located in the engagement hole 32 of the drive plate 16. At this time, the stepped portion 66A of the master key 60 is located in the key insertion hole 22 of the end plate 20, and the stepped portion 66B is located in the key hole 23 of the movable plate 21.

Next, when the master key 60 is rotated, the stepped portions 36d of the respective disks 50a to 50c to which the protruding key crests 65 of the master key 60 correspond, and the remaining disks 51a to 50c corresponding to the remaining key crests 64, respectively. 51c and 52a
The step portions 36e of 52c are hooked to rotate all the disks at the same time, and the support groove 37 and the concave portion 39 move toward the lock rod 19 while maintaining the aligned state. The subsequent operation is the same as when the key 2 is rotated, and the description thereof is omitted here.

In the above embodiment, in order to increase the number of key differences, the key crests 6a to 6c of the key 2 are set to different lengths and arranged at different intervals, while each of the disks 50a to 50c.
As 50c, 51a to 51c, 52a to 52c, those having a thickness corresponding to the length of each key mountain 6a to 6c are used, and as each partition plate 12a to 12c, those having a thickness corresponding to the interval between each key mountain are used. However, the present invention is not limited to this, and the key ridges 6a to 6c of the key 2 may be set to different lengths, while only each disc may have a thickness corresponding to the length of each key ridge. The two key ridges 6a to 6c may be arranged at different intervals, and on the other hand, each partition plate may have a thickness corresponding to the interval between the key ridges.

[0047]

As described above, according to the present invention, since the inner cylinder interposed between the outer cylinder and the disk is unnecessary, the internal structure of the lock body is simplified, the number of parts is reduced, and the assembly is improved. It is possible to reduce the number of steps required and to realize a significant reduction in cost.
Further, a support groove for supporting the lock rod is formed on the outer peripheral edge of each disc, and a recess into which the lock rod falls is formed at a position adjacent to the support groove, and each disc is rotated for locking operation with the support groove and the recess aligned. , It can be unlocked and locked with a small stroke, has excellent operability, and requires only a short time for unlocking and locking.

Further, on the outer peripheral edge of each partition plate, there is a lock groove for engaging and disengaging with the lock rod according to the vertical movement of the lock rod,
Since the guide groove that supports the lock rod freely according to the movement of the lock rod is formed in series, there is no need to install a special member for engaging and disengaging the lock rod, simplifying the structure and the number of parts. It is possible to reduce the number of parts and facilitate the assembly work. Moreover, since the thickness of the lock body can be reduced by using no special member, it can be used in a narrow mounting space.
Further, since it is possible to increase the number of disks by the amount that no special member is used, it is possible to increase the number of key differences.

According to the second to fourth aspects of the invention, the length and interval of each key crest of the key is changed, while the lock body is adapted to change the thickness of each disk and each partition plate according to the length and interval of each key crest. Therefore, by using discs and partition plates of different thickness, without changing the shape of the key insertion hole of each disc,
The remarkable effect is that the number of key differences can be increased.

[Brief description of drawings]

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

FIG. 2 is a front view showing appearances of a key and a master key.

FIG. 3 is a cross-sectional view showing an internal state of the lock body when locked.

FIG. 4 is a cross-sectional view showing an internal state of the lock body during an unlocking operation.

FIG. 5 is a cross-sectional view showing an internal state of the lock body when unlocked.

FIG. 6 is a cross-sectional view showing an internal state of the lock body when unlocked.

FIG. 7 is a cross-sectional view showing an internal state of the lock body at the time of an unlocking operation by the master key.

FIG. 8 is a front view showing the outer appearance of the end plate of the front plate.

FIG. 9 is a front view showing an appearance of a movable plate of a front plate.

FIG. 10 is a front view showing an appearance of a drive plate.

FIG. 11 is a front view showing the outer appearance of the disc.

FIG. 12 is a front view showing the outer appearance of the disc.

FIG. 13 is a front view showing the outer appearance of the disc.

FIG. 14 is a front view showing an appearance of a partition plate.

[Explanation of symbols]

1 Lock Main Body 2 Keys 6a, 6b, 6c Key Mountain 8 Cylindrical Case 12a, 12b, 12c Partition Plate 13 Lock Rod 16 Drive Plate 32 Engagement Hole 34, 40 Key Insertion Hole 36a to 36e Step 41 Lock Groove 42 Guide Groove 50a ~ 50c, 51a to 51c, 52a to 52c
disk

Claims (4)

[Claims] 1. A key having a plurality of key peaks having different heights,
It is composed of a combination of a lock main body that locks and unlocks by inserting this key and rotating it forward and backward. The lock main body rotates inside the cylindrical case having a key hole. A plurality of discs freely arranged, a lock rod arranged orthogonally to each disc at the inner peripheral position of the cylindrical case, and a plurality of discs arranged in a state where rotation between adjacent discs is restricted. A partition plate, and a drive plate that is detachably attached to the tip of the key that is rotatably provided inside the tubular case. Each of the partition plates has a key insertion hole in the center of the plate surface. , A lock groove that engages and disengages with the lock rod according to the vertical movement of the lock rod, and a guide groove that slidably supports the lock rod according to the movement of the lock rod are formed in series on the outer peripheral edge, Each disk has a key insertion hole at the center of the plate surface, and the key insertion hole has the key insertion hole. A stepped portion having a height corresponding to the height of the key mountain is formed, and the outer peripheral edge corresponds to the support groove of the lock rod having a groove depth corresponding to the lock groove of the partition plate and the guide groove of the partition plate. A disk lock device in which a recess having a groove depth is formed adjacent to the same angular position. 2. The key has a plurality of key crests having different heights and lengths, and each of the discs is positioned corresponding to each key crest of the key inserted in the cylindrical case. The disk lock device according to claim 1, wherein the thickness of the disk lock corresponds to the length of each key mountain. 3. The key has a plurality of key ridges having different heights and intervals, and each of the discs is positioned corresponding to each key ridge of the key inserted in the cylindrical case, 2. The disk lock device according to claim 1, wherein the partition plate has a thickness corresponding to an interval between the key crests. 4. The key has a plurality of key ridges having different heights, lengths, and intervals, and each of the discs is positioned corresponding to each key ridge of the key inserted in the cylindrical case. 2. The disk lock device according to claim 1, wherein the thickness of each disk is made to correspond to the length of each key crest, and the thickness of each partition plate is made to correspond to the interval of each key crest.