JPH07145678A - Disk lock - Google Patents

Abstract

PURPOSE:To simplify the structure, to decrease the number of component parts, to simplify assembly work and to improve operability in locking and unlocking by eliminating an inner cylinder. CONSTITUTION:A disk lock is made up by combination of a key 2 and a lock body 1 that works when the key 2 is inserted and turned clockwise and counterclockwise. The lock body 1 is made up by mounting a plurality of disks 50a-50c, 51a-51c, 52a-52c, a lock bar 13, and two lock plates 14, 15 having lock grooves 41 to the inside of a cylindrical case 8. Support grooves and dents are provided side by side to outer peripheral edges of the disks. As a correct key 2 is inserted and turned for locking, the disks are turned as one body with their support grooves and dents aligned together. Then, the lock bar 13 is fallen into the dents and the lock bar 13 is disengaged from the lock grooves 41. Thereby, a driving plate 16 is enabled to make turning.

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 an automatic vending machine, an automatic teller machine, and a safe.

[0002]

2. Description of the Related Art As a conventional disk lock device of this type, keys having different heights are provided in a plurality of rows along the length direction,
There is a combination of a lock main body that is locked and unlocked by inserting the key and rotating the key in the forward and reverse directions. In the lock body, an inner cylinder is rotatably arranged inside an outer cylinder, and a plurality of discs and lock bars for setting respective states of locking and unlocking are loaded inside the inner cylinder. There is.

The outer cylinder has an engagement groove for a lock rod on its inner peripheral surface.
Further, the inner cylinder is provided with slits, respectively, and the outer peripheral edge of each disk is formed with concave portions at different angles. 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 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. The restraint by the outer cylinder is released.

[0004]

However, in the disk locking device having the above-mentioned structure, the inner structure is complicated because the inner cylinder is loaded in the outer cylinder and a plurality of disks are loaded in the inner cylinder. In addition, there is a problem that the number of parts is increased, labor is required for assembling, and the manufacturing cost is high. The present invention is based on the viewpoint that the inner cylinder interposed between the outer cylinder and the disk is a factor that complicates the structure and the like, and by eliminating the inner cylinder, the structure is simplified,
It is an object of the present invention to provide an inexpensive disk lock device that reduces the number of parts, facilitates assembly work, and improves operability during locking and unlocking.

[0005]

DISCLOSURE OF THE INVENTION A disk lock device according to the present invention is a key in which a plurality of key ridges having different heights are arranged in a row along the length direction, and the lock is performed by inserting the key and rotating the key in the forward and reverse directions. And a lock main body that operates to unlock. The lock body is a cylindrical case having a key hole on the front end surface,
A plurality of discs that are rotatably stacked inside the tubular case, lock rods that are orthogonally arranged to the discs at the inner peripheral position of the tubular case, and pivot inside the tubular case. And a lock plate having a lock groove formed at a predetermined angular position for engaging and disengaging in accordance with the vertical movement of the lock rod, and rotatably provided and inserted in the cylindrical case. And a drive plate having an engaging portion that engages and disengages with the tip of the key. Each of the above-mentioned discs has a key insertion hole in 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 at different angles and the outer peripheral edge A support groove corresponding to the groove depth of the lock groove for supporting the lock rod and a recess adjacent to the support groove and deeper than the groove depth of the lock groove are formed at the same angular position.

[0006]

When locked, the support grooves and recesses of all the disks are aligned, and the lock bar is located in the support groove of each disk. When a proper key is inserted and a turning operation is performed by a predetermined angle, the key crests simultaneously strike the stepped portions of the corresponding discs, and then the stepped portions are hooked at the same time to turn all the discs at the same time. By this rotation 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 rod, the lock rod falls into the concave portion of each disk and is disengaged from the lock plate. This makes it possible to further rotate the key, and by this rotation operation, the lock rod moves in unison with the rotation of each disk in the state of falling into the recess, and the lock is released. If an improper key is inserted and a rotation operation is performed, all the disks do not rotate at the same time because the key crests do not abut the stepped portions of the corresponding disks at the same time. As a result, the alignment of the support groove and the concave portion is broken, the lock rod does not fall into the concave portion of each disc, and the key cannot be rotated any more.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk lock device according to the present invention comprises a combination of a key and a key body. As one embodiment thereof, the appearance of a key 2 is shown in FIG. 4 and the lock body 1 is shown in other figures except FIG. The internal structure and each structure of are shown respectively.

The key 2 shown in FIG. 4 is a flat plate-shaped knob portion 3 having a large width and a key piece 4 having a width smaller than the knob portion 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, and when the key 2 is inserted into the lock body 1, the distal end portion 5 abuts on a drive plate 16 which will be described later and the engaging hole 44.
Engage with.

On both sides of the key piece 4, a plurality of key mountains 6a, 6b, 6c having different heights are provided in a row along the length direction, and in the vicinity of the knob portion 3 of the key piece 4, the key A stepped portion 7 corresponding to the front plate 9 of the main body 1 is formed. Key Mountain 6
Among a, 6b, 6c, the key mountain 6a is the highest, and the key mountain 6b
Is next to this, but the key mountain 6c is the lowest. In the figure, an example in which the height of the key crest is set to three levels is shown for the sake of easy description, but if the number of steps is increased, more key differences can be set. The lengths of the respective key ridges 6a, 6b, 6c are the respective discs 50a-50c, 51a-51 described later.
It corresponds to the thickness of each of c and 52a to 52c or a plurality of sheets.

1 to 3 show 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-.
52c, a plurality of retainers 12, a lock rod 13, two lock plates 14 and 15, a drive plate 16 and the like. It goes without saying that the lock body 1 does not have a structure corresponding to the conventional inner cylinder.

1 to 3, FIG. 1 shows the internal state of the lock body 1 when locked, FIG. 2 shows the internal state of the lock body 1 when unlocked, and FIG. 3 shows the lock state when unlocked. Body 1
The internal state of each is shown as a vertical sectional view.
Further, FIG. 5 to FIG. 7 show the internal state of the lock main body 1 in the process from locking to unlocking, and FIG. 8 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 cross sectional direction.

The cylindrical case 8 is a cylindrical body having both ends open, and a support groove 17 is formed in a longitudinal direction at a predetermined angular position on the inner peripheral surface over substantially the entire length. This support groove 17
Engages protrusions 18 and 19 provided on each retainer 12 and each lock plate 14 and 15 which will be described later, and each retainer 12
It is for fixing the lock plates 14 and 15 in a non-rotating state.

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 connected to the inner surface of the end plate 20. 9 shows the appearance of the end plate 20, and FIG. 10 shows the appearance of the movable plate 21.

A fitting hole 22 having a diameter corresponding to the width of the stepped portion 7 of the key 4 is formed in the center of the plate surface of the end plate 20, while the movable plate 21 on the end plate 20 side is formed. A fitting protrusion 25 is provided on the side surface so as to be fitted in the fitting hole 22 so as to freely rotate about its axis. A rectangular key hole 23 is formed in the fitting projection 25 along the diameter line, and 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 in the rear opening of the cylindrical case 8, and a bearing hole 26 is formed at 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.

As shown in FIG. 11, on the plate surface of the drive plate 16, mounting grooves 29 intersecting vertically and horizontally and engaging holes 44 are formed at the intersecting positions of the mounting grooves 29. A cross-shaped support substrate 30 as shown in FIG. 12 is fitted. The lock bar 13 is provided on the outer periphery of the support substrate 30.
The U-shaped groove 31 for supporting the is cut out. This U-shaped groove 3
Reference numeral 1 is formed to have a depth that is almost twice the diameter of the lock rod 13.

An engaging hole 32 into which the tip 5 of the key piece 4 is inserted is formed in the center of the plate surface of the support substrate 30. The engagement hole 32 has the same shape as the engagement hole 44 of the drive plate 16 and is provided with contact edges 33S and 33E forming a predetermined angle θ. When the key 2 is inserted in the locked state shown in FIGS. 1 and 5, the tip portion 5 of the key 2 has one contact edge 3 of the engagement hole 32.
Contact 3S. While the key 2 rotates in the unlocking direction B by the angle θ, the tip portion 5 idles in the engagement holes 32 and 44, and when the state shown in FIG. It hits the other hitting edge 33E, and then is rotated integrally with the drive plate 16.

Next, each of the disks 50a-50c, 5
Each of 1a to 51c and 52a to 52c has a diameter substantially corresponding to the inner diameter of the cylindrical case 8, and as shown in FIGS. 13 to 15, a key insertion hole through which the key piece 4 can be inserted and removed in the center of the plate surface. 34
Have been opened respectively. Each of the key insertion holes 34 has a hole side edge located in the locking direction A of the key 2 and a contact edge 35 for returning operation.
The key crests 6a to 6 of the key 2 are formed on the hole side edge facing the hitting edge 35, that is, the hole side edge located in the unlocking direction B.
Steps 36a to 36c having a height corresponding to the height of c are formed at the same angle α when viewed from the center of the key insertion hole 34.
Each disk 50a-50c, 51a-51c, 52a-
52c have the same shape and have a thickness of, for example, 3
It is set in stages. The subscript a means a thick disc, the subscript b means a medium-thick disc, and the subscript c means a thin disc, respectively. It is also possible to increase the number of steps in this thickness. Can make a difference. The lock body 1 of this embodiment has nine types of disks 50a to 50c, 51a to 51c, 52a to 52c.
Will be built in.

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. The lock rod 13 is rotated while keeping the above state, and the lock rod 13 is dropped into the series of the recesses 39.

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

A retainer 12 having a shape as shown in FIG. 17 is interposed between adjacent disks so that each disk does not come into surface contact with the adjacent disk. A guide groove 45 that slidably supports the rod bar 13 and a protrusion 1 that engages with the support groove 17 of the cylindrical case 8 are provided on the outer peripheral edge of each retainer 12.
8 is integrally formed, and a through hole 40 having a diameter substantially matching the maximum width of the key piece 4 is formed on the plate surface to allow the key piece 4 to rotate.

Ring-shaped lock plates 14 and 15 as shown in FIG. 16 are provided outside the disks at both ends. Each of the lock plates 14 and 15 has a lock groove 41 that engages and disengages in accordance with the vertical movement of the lock rod 13, and the inner peripheral edge of the ring serves as a guide side 42 of the lock rod 13. A guide edge 43 that is inclined to guide the lock bar 13 toward the guide side 42 is formed at one groove side edge of the lock groove 41.

The lock bar 13 has a disk support groove 37.
When the lock rod 13 is supported inside, it engages with the lock groove 41, and when the lock rod 13 falls into the recess 39, the engagement with the lock groove 41 is released, and the guide edge 43 guides the guide edge 42. After the lock bar 13 is pushed out in the direction of, the guide rod 45 moves along the guide groove 45 and the guide side 42 while being constrained between the guide groove 45 and the guide side 42 of each retainer 12. In the figure, reference numeral 19 is a protrusion for engaging with the support groove 17 of the cylindrical case 8 and fixing the lock plates 14 and 15 in a non-rotatable state.

Next, the operation of the disk lock device having the above structure will be described with reference to FIGS. 1 to 3 and 5 to 8. 5 to 8, the step portion 36a of the disks 50a to 50c is shown.
The relationship between the key 2 and the key 2 is shown, but another disk 51a
The same applies to the relationship between the steps 51b and 52a to the stepped portions 36b and 36c, and the illustration thereof is omitted here. At the time of locking shown in FIG. 1 and FIG.
Support groove 37 of 50c, 51a to 51c, 52a to 52c
And the recesses 39 are aligned in a row, at which time the lock bar 13 is supported in the support groove 37 of each disk,
Both ends thereof are engaged with the lock grooves 41 of the lock plates 14 and 15. In addition, the key insertion hole 34 of each disk
Is, since the contact edges 35 for the return operation are aligned in a line,
Key 2 can be inserted.

When the proper key 2 is now inserted through the keyholes 22 and 23 of the front plate 9, the key piece 4 is inserted into each of the disks 50a-50.
The key insertion holes 34 of c, 51a to 51c, 52a to 52c are penetrated, and the tip portion 5 of the key 2 abuts the drive plate 16 and is positioned in the engagement holes 44 and 32. Then key 2
The stepped portion 7 is located inside the key hole 23 of the drive plate 16.

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 corresponding 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 to 6c.
Engages the corresponding step portions 36a to 36c to rotate all the discs at the same time, and the support groove 37 and the recess 39 move toward the lock bar 19 while maintaining the aligned state.
At this time, the lock rod 13 remains in the lock groove 41 of the lock plates 14 and 15 and slides on the support grooves 37 aligned in a line. When the recesses 39 aligned in a row reach the angular position of the lock rod 13, as shown in FIGS. 2 and 7, the lock rods 13 fall into the recesses 39 and engage with the lock grooves 41 of the lock plates 14 and 15. The engagement is released, and the guide side 42 is guided. When the key 2 is further rotated, as shown in FIGS. 3 and 8, the lock rod 13 is engaged with the recess 39 and all the disks 50a to 50a.
c, 51a to 51c, and 52a to 52c rotate integrally,
The lock plates 14 and 15 move along the guide sides 42.

By the way, until the lock rod 13 and the lock groove 41 are disengaged from each other, the tip portion 5 of the key 2 has the supporting substrate 3
The drive plate 16 does not rotate and the latching piece 28 does not operate because it idles in the engagement hole 32 of 0 and the engagement hole 32 of the drive plate 16. 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 engaging hole 32 at the edge 33E.
Then, the drive plate 16 rotates integrally as a result,
The latching piece 28 operates.

If an incorrect key is inserted and rotated,
All the keys 50a to 50c, 51a to 51c and 52a do not hit the corresponding stepped portions at the same time.
~ 52c do not rotate all at once, and the support groove 37 and the recess 39
Alignment is broken. As a result, the lock bar 13 does not fall into the recess 39 of each disk, and the key cannot be rotated any more.

Next, when the proper key 2 is rotated in the locking direction A, the respective key crests 6a, 6b, 6c of the key 2 are moved to the respective disks 50a-5.
0c, 51a to 51c, 52a to 52c are hit by the hitting edge 35 for the returning operation to rotate the respective disks at once. In this case, the disks 50a-50c and 51a-5
1c and 52a to 52c are lock rods 1 engaged with the recess 39
3, the lock bar 13 is constrained in the recess 39 by the guide side 42 of each lock plate 14, 15, so that all the disks 50a-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 bar 13 reaches the position of the lock groove 41 of each of the lock plates 14 and 15, the restraint by the guide side 42 is released, so that the lock bar 13 can escape into the lock groove 41. . On the other hand, all the key mountains 6a of the key 2,
Since b and c are engaged with the contacting edge 35 for the returning operation of all the disks, all the disks continue to rotate, whereby the lock bar 13 gets on the support groove 37 of each of the disks, Engages in the lock groove 41, and all the disks return to the original locked position.

[0032]

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 also reduces the number of steps required and realizes a significant cost reduction.
Further, a support groove for supporting the lock bar is formed on the outer peripheral edge of each disk, and a recess into which the lock bar is dropped is formed at a position adjacent to the support groove, and each disk is rotated for unlocking operation with the support groove and the recess aligned. Therefore, the unlocking and locking operations can be performed with a small stroke, the operability is excellent, and the time required for unlocking and locking can be shortened.

[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 vertical cross-sectional view showing an internal state of the lock body when unlocking.

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

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

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

FIG. 6 is a cross-sectional view showing an internal state of the lock body during an unlocking operation.

FIG. 7 is a cross-sectional view showing an internal state of the lock body when unlocked.

FIG. 8 is a cross-sectional view showing an internal state of the lock body when unlocked.

FIG. 9 is a front view showing the outer appearance of the end plate of the front plate.

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

FIG. 11 is a front view showing appearances of a rear plate and a drive plate.

FIG. 12 is a front view showing an appearance of a support substrate.

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

FIG. 14 is a front view showing the outer appearance of the disc.

FIG. 15 is a front view showing the outer appearance of the disc.

FIG. 16 is a front view showing the outer appearance of a lock plate.

FIG. 17 is a front view showing the appearance of a retainer.

[Explanation of symbols]

1 Lock Main Body 2 Keys 6a, 6b, 6c Key Mountain 8 Cylindrical Case 13 Lock Rod 14, 15 Lock Plate 16 Drive Plate 32 Engagement Hole 34 Key Insertion Hole 36a, 36b, 36c Step 37 37 Support Groove 39 Recess 41 Lock Lock 44 Engagement holes 50a-50c, 51a-51c, 52a-52c Disc

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[Procedure amendment]

[Submission date] April 8, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

[0032]

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 also reduces the number of steps required and realizes a significant cost reduction.
Moreover, since no springs are used, problems such as failure and performance deterioration do not occur. Further, a support groove for supporting the lock bar is formed on the outer peripheral edge of each disk, and a recess into which the lock bar is dropped is formed at a position adjacent to the support groove, and each disk is rotated for unlocking operation with the support groove and the recess aligned. Therefore, the unlocking and locking operations can be performed with a small stroke, the operability is excellent, and the time required for unlocking and locking can be shortened.

Claims (1)

[Claims] 1. A combination of a key in which a plurality of key peaks having different heights are provided in a row along the length direction, and a lock main body that is locked and unlocked by inserting and rotating the key in the forward and reverse directions. In the disc lock device, the lock main body includes a tubular case having a key hole formed in a front end surface thereof, a plurality of discs rotatably stacked inside the tubular case, and a tubular case of the tubular case. A lock rod disposed orthogonally to each disk at an inner peripheral position, and a lock disposed inside the tubular case in a state in which rotation is restricted and engaged and disengaged at a predetermined angular position according to vertical movement of the lock rod. A lock plate having a groove formed therein; and a drive plate having an engaging portion that engages with and disengages from a tip end portion of a key that is rotatably provided inside the cylindrical case and is inserted. , Has a key insertion hole in the center of the plate surface. A step portion having a height corresponding to the height of the key crest of the key is formed with different angles, and a support groove for supporting the lock rod corresponding to the groove depth of the lock groove is formed on the outer peripheral edge, and the support groove. A disk lock device, wherein a recessed portion deeper than the groove depth of the lock groove is formed adjacent to the groove at the same angular position.