JPH07100984B2 - Code 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 mechanical code lock device in which an unlocking number can be arbitrarily set.

[0002]

2. Description of the Related Art Code locks that are installed in doors of lockers or safes of sports facilities and display an unlocking number have a unique unlocking number and cannot be changed. And, there is one that can change the setting of the unlocking number. Some of these code locks have a mechanical structure and some have an electrical structure, and each code lock prevents unauthorized unlocking of the locked door by a third party.

[0003]

In the conventional code lock having a structure in which the unlocking number cannot be changed, there is a possibility that a third party who knows the unlocking number may illegally unlock the code lock.
On the other hand, a code lock that can change the unlocking number can prevent unauthorized use by a third party as described above, but in order to change the unlocking number, a special setting change operation using a predetermined pin or lever. Had to do. Further, since such a code lock has a complicated internal mechanism, it becomes a large code lock, and the door incorporating this code lock must be large. Furthermore, since the code lock having an electrical structure requires a power source, it becomes inoperable during a power failure,
Further, there is a problem that the unlocking number stored in the electronic circuit disappears and the unlocking becomes impossible.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a mechanical and compact code lock device capable of easily setting an arbitrary unlock number at the time of use.

[0005]

A code locking device according to the present invention comprises a locking part having a locking mechanism for locking a door, and a first part which reciprocally slides in a locking direction or an unlocking direction by the operation of the locking part. A slide bar portion and at least one dial pivotally supported by a dial shaft which is substantially orthogonal to the sliding direction of the first slide bar portion and is in constant contact with the first slide bar portion; The dial part has a plurality of types of codes printed on the outer periphery of the dial and displays one type of the code to the outside, and a predetermined type of code for the dial part when locking and unlocking. When the dial shaft operation restricting portion to be displayed and the dial portion display one predetermined code for unlocking, the operation of the locking portion is prohibited, and at least 1
A zero stopper portion that enables the locking portion to operate by rotating two dials; a transmission portion that rotates the dial shaft at least once by a one-way sliding movement of the first slide bar portion; A memory unit that has a memory gear that interlocks with a dial unit, and stores the unlocking number displayed by the dial by the sliding operation of the first slide bar unit in the locking direction. When the lock number is displayed on the dial portion, the first
A memory portion to enable the sliding movement of the unlocking direction of the slide bar unit, the locking direction of the first slide bar portion also
During the reciprocating sliding motion in the unlocking direction,
And an erroneous operation prevention mechanism for prohibiting a reverse sliding motion in the above.

[0006]

In the unlocked state of the code lock device according to the present invention, an arbitrary number (unlocked number) is displayed by dial operation, and when the unlocked number is set, a cylinder which is a locking unit interlocked with a key or a handle. The lock can be locked. Therefore, by rotating the cylinder lock in the locking direction to move the first slide bar that is the first slide bar unit, the set unlocking number is stored in the memory mechanism that is the memory unit. The dial rotates and the dial display becomes a predetermined number, for example, "0". At the same time, the first slide bar is in the locked position, and the movement of the first slide bar thereafter is prohibited. In this way, the code lock device is locked.

When the code lock device in the locked state is unlocked, the memory mechanism releases the prohibition of the movement of the first stride bar by displaying the unlocking number set by the dial operation. The cylinder lock that interlocks with the first slide bar is in the unlockable state. Therefore, by rotating the cylinder lock in the unlocking direction and moving the first slide bar, the dial is rotated and the dial display becomes a predetermined number, and the first slide bar is unlocked. . In this way, the code lock device is in the unlocked state, and the code lock device is again in a state in which an arbitrary unlock number can be set and locked.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the code lock device of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing the inside of the code lock device in an unlocked state, FIG. 2 is an external front view of the code lock device of FIG. 1, and FIG. 3 is a view showing the code lock device of FIG. It is a side view shown. As shown in FIG. 3, this code lock device includes a base portion 30 embedded in a door 60 or the like of a locker or a safe, and a cover 31 that covers the front surface of the base portion 30 and is provided on the outer surface of the door 60 or the like. It has. As shown in FIG. 2, a cover 31 has a cylinder lock hole 31a for operating a key of the cylinder lock 1 operated by a key 32, and a dial 6 having a disc-shaped circumference and a corrugated circumference. A plurality of dial holes 31b for projecting the portion are formed.
In this embodiment, four dials 6 are provided, and each dial 6 has ten kinds of codes from "0" to "9". Each one of the ten types of codes that each dial 6 has is configured to be displayed by the dial hole 31b. This cover 31
Is provided with a display window 31c for displaying the unlocked state "open" or the locked state "in use" of the code lock device. On the cover 31, two triangular points indicating the unlocked position and the locked position of the key 32 and an arrow indicating the rotating direction of the key 32 are displayed. In addition, the cover 31 has a display plate 33 having one triangular point for indicating each of the triangular points indicating the unlocked position or the locked position by being rotated together with the rotation operation of the key 32.
Is provided. As shown in the side view of FIG. 3, a lock bar 33 that interlocks with the inner cylinder 2 of the cylinder lock 1 is provided on the back side of the base 30, and the lock bar 33 rotates the shaft 33a by rotating the key 32. It pivots to the center and projects from the door, and this door 60 is locked. The cylinder lock 1 and the lock bar 33 constitute a locking mechanism 90.

In FIG. 1 showing the inside with the cover 31 removed, a cylinder gear 4 is formed on the inner cylinder 2 of the cylinder lock 1 and meshes with a rack 13 formed on the first slide bar 5. ing. Therefore, by rotating the inner cylinder 2 of the cylinder lock 1, the first slide bar 5
Are configured to slide in the vertical direction in FIG. Further, the inner cylinder 2 of the cylinder lock 1 is configured so that a zero stopper shaft 12 which is a substantially rod-shaped body can be engaged with a projecting zero stopper 10 formed so as to project at a right angle to the axis thereof. In the unlocked state shown in 1, the inner cylinder 2 and the zero stopper 10 are in the engaged state. The first slide bar 5 operates the dial shaft 8 that pivotally supports each dial 6 and the set gear shaft 18 that pivotally supports each set gear 16 that meshes with each dial 6 via the intermediate gear 15. And are regulated. The dial shaft operation restricting mechanism 70 for restricting the operation of the dial shaft 8 by the first slide bar 5 and the memory mechanism 50 for restricting the operation of the set gear shaft 18 by the first slide bar 5 will be described later. The outer peripheral surface of the code display ring 6a formed on the side surface of each dial 6 has 1
Numbers of 0 kinds are printed, and a dial gear 7 is formed on the side surface of the code display ring 6a. Each dial gear 7 is constantly pressed by the gear retainer 25, and the code display ring 6a is stopped at a predetermined position to reliably display one number of each code display ring 6a from the dial hole 31b of the cover 31. Is.

Dial Shaft Operation Restricting Mechanism The dial shaft operation restricting mechanism 70 by the first stride bar 5 will be described. FIG. 4 is a diagram showing the vicinity of the dial 6 shown by cutting a part of the code lock device of this embodiment shown in FIG. As shown in FIG. 4, the dial shaft 8 is supported by the spring 27 so that the left end 8a of the dial shaft 8 which pivotally supports each dial 6 is always in contact with the groove 5a formed in the first slide bar 5. Pressed to the left. On the bottom surface of the groove 5a formed in the first slide bar 5, a first concave portion 5b, a convex portion 5c and a second concave portion 5d are formed, as shown in the sectional view of FIG. . In the unlocked dial shaft operation restricting mechanism 70 shown in FIG. 4, the left end 8a of the dial shaft 8 is in contact with the first recess 5b of the first slide bar 5.

Each dial 6 and the dial gear 7 formed on the dial 6 are pivotally supported by a dial shaft 8 via a fixed bush 8c and a dial bush 9. Each fixed bush 8c is fixed to the dial shaft 8, and the fixed bush 8c limits the moving distance of the dial bush 9 in the axial direction of the dial shaft 8. Springs 29 are arranged between the dial bushes 9 and the fixed bushes 8c, and the dial bushes 9 are constantly pressed by the springs 29 to the right in FIG. However, the left end spring 29 is disposed between the spring stopper 8d and the left end dial bush 9 and presses the left end dial bush 9 to the right.

A pin 9a is provided on each dial bush 9 so that it can engage with a dial gate 7a formed on the inner circumference of the dial gear 7. FIG. 5 is a cross-sectional view showing the main part of the dial shaft operation restricting mechanism 70 in the vicinity of the dial 6, and shows the dial shaft operation restricting mechanism 70 in FIG. 4 viewed from below. As shown in the sectional view of FIG. 5, the dial bush 9 is pressed to the right by the spring 29 and is in contact with the fixed bush 8c. Also,
Pin 9a protruding on the outer periphery of the dial bush 9
Also protrudes toward the inner peripheral side of the dial bush 9 and engages with a groove formed in the dial shaft 8 parallel to the axial direction. For this reason, each dial bush 9 can move a predetermined distance in the axial direction of the dial shaft 8 and is configured to rotate together with the dial shaft 8. The dial shaft 8 is supported on both sides by base frames 30a and 30c, which are structural frames of the base portion 30, and as described above, the left end 8 of the dial shaft 8 has the first groove of the groove 5a of the first slide bar 5. It abuts the concave portion 5b and engages with the first slide bar 5.

As shown in FIG. 5, the vicinity of the left end 8a of the dial shaft 8 (the dial shaft 8 in the unlocked state)
The protrusion 8b is formed at a position (supported by the base frame 30a). FIG. 6 shows the unlocked base frame 3 of FIG.
0a and the dial shaft 8 are engaged with each other,
It is the figure which looked at base frame 30a from the direction of an axis of dial shaft 8. As shown in FIG. 6, the protrusion 8b of the dial shaft 8 in the unlocked state is engaged with the base gate 30b formed on the base frame 30a, and the dial shaft 8 cannot rotate.

FIG. 7 shows the dial 6 and the inner cylinder 2 of the cylinder lock 1.
3 shows the positional relationship with the zero stopper 10 that engages with the dial 6 as seen from the axial direction of the dial shaft 8. As shown in FIG. 7, a part of the dial gear 7 provided on the side surface of the dial 6 is provided with a toothless portion 7b, and the toothless portion 7b is provided on the zero stopper shaft 12. It is configured so that the dial cam 14 can be engaged. The zero stopper shaft 12 is provided with the above-mentioned zero stopper 10, and in the unlocked state, the zero stopper 10 engages with the recess 2a (FIG. 4) formed in the inner cylinder 2 of the cylinder lock 1. The rotation of the inner cylinder 2 is prohibited.

Thus, in the unlocked state, the dial 6
Since the cylinder lock 1 and the cylinder lock 1 are mechanically connected (FIG. 7), by rotating at least one dial 6, the dial cam 14 is pressed by the gear teeth of the dial gear 7 and rotates in the direction of arrow A. To do. Dial cam 14
The zero stopper 10 and the recess 2a of the inner cylinder 2 are disengaged from each other by the rotation in the direction of arrow A.
It should be noted that the four provided on the zero stopper shaft 12
The two dial cams 14 are pressed by known spring means so as to always come into contact with the corresponding four dial gears 7, and the dial cams 14 do not move even if the zero stopper shaft 12 moves in the axial direction. Instead, it is always in contact with the dial gear 7.

As shown in FIG. 4, the left end of the zero stopper shaft 12 is supported by the zero stopper support rod 11, and the zero stopper shaft 12 has a left end face and a right end face of the zero stopper support rod 11. An inclined surface having an inclination of about 45 degrees with respect to the axial direction of 12 is formed. In the unlocked state, the inclined surfaces of the zero stopper support rod 11 and the zero stopper shaft 12 are configured to be in close contact with each other. That is,
As shown in FIG. 4, in the unlocked state, the left end portion 12a of the zero stopper shaft 12 and the zero stopper support rod 11 form a substantially cylindrical shape, and the inclined surface of the zero stopper shaft 12 at this time is The contact surface of the zero stopper support rod 11 with the inclined surface is substantially the same as the surface obtained by cutting the cylindrical shape at an angle of about 45 degrees with respect to the axis thereof. As described above, since the zero stopper support rod 11 supports the zero stopper shaft 12, the zero stopper shaft 12 and the zero sputter 10 are structured to slide to the right in FIG. 4 by the rotation of the zero stopper shaft 12. There is.

<Locking Operation of Dial Shaft Operation Restricting Mechanism> The locking operation of the dial shaft operation restricting mechanism 70 of the code lock device configured as described above will be described.

In the unlocked state of the code locking device of the present embodiment shown in FIGS. 1 and 4, the locker turns at least one dial 6 to set an arbitrary unlocking number, so that the zero stopper can be set. The zero stopper 10 of the shaft 12 is disengaged from the recess 2a of the inner cylinder 2 of the cylinder lock 1. This state is shown in FIGS. 8 and 9. In FIG. 8, the dial 6 is rotated from the unlocked state shown in FIG.
Shows that it is disengaged from the inner cylinder 2, and FIG. 9 is a front sectional view showing a main part of the dial shaft operation restricting mechanism 70 in the state of FIG. In the state shown in FIG. 9, the inner cylinder 2 of the cylinder lock 1 can be rotated by operating the key 32.

By rotating the inner cylinder 2 of the cylinder lock 1 in the state shown in FIG. 9 with the key 32 (rotation in the direction of arrow B), the cylinder gear formed on the inner cylinder 2 as shown in FIG. 4 and the first rack 13 of the first slide bar 5 are in mesh with each other. Therefore, the first slide bar 5 slides in the direction of arrow C.

In the state shown in FIG. 10, the first slide bar 5 is moved by the rotation of the inner cylinder 2 of the cylinder lock 1 in the direction of arrow B.
Indicates that the dial shaft 8 is moving in the direction of arrow C, and the left end 8a of the dial shaft 8 is in contact with the convex portion 5c formed on the bottom surface of the groove 5a and is moving in the direction of arrow D. At this time, the protrusion 8b of the dial shaft 8 is
It escapes from the base gate 30b formed in a.
When the code display ring 6a of the dial 6 displays "0", the pin 9a formed on the dial bush 9 is slid in the axial direction to a position where it is housed in the dial gate 7a formed on the dial 7. However, since at least one code display ring 6a displays a number other than "0" by setting the unlocking number, the pin 9a formed on the dial bush 9 is provided on the side surface of the dial gear 7. And the pin 9a slides on the side surface of the dial gear 7. The left end 8a of the dial shaft 8 has a transmission mechanism 4 which will be described later for rotating the dial shaft 8 about its axis in association with the sliding operation of the first slide bar 5.
0 is provided.

Since the dial shaft operation restricting mechanism 70 is constructed in this manner, the pin 9a of the dial bushing 9 is engaged with the dial gear 7 while the dial bush 9 is rotating.
If it matches the dial gate 7a, the pin 9a is housed in the dial gate 7a, and the dial 6 rotates as the dial shaft 8 rotates. Therefore, in each dial 6 displaying an arbitrary unlocking number, the pin 9a of the dial bush 9 enters the corresponding dial gate 7a by one rotation (360 degrees) of the dial shaft 8. . And key 3
At the end of the turning motion in the locking direction by the operation of 2,
All the dials 6 rotate together with the dial shaft 8, and all the code display rings 6a display "0". In addition,
One direction of the first slide bar 5 (eg locking direction)
In the sliding operation of, while the left end 8a of the dial shaft 8 is sliding on the convex portion 5c (the distance indicated by the arrow E),
The dial shaft 8 is constituted by a transmission mechanism 40, which will be described later, so as not to rotate when the dial shaft 8 rotates once and the left end 8a is in contact with the first recess 5b and the second recess 5d.

FIG. 11 shows an arrow B of the inner cylinder 2 of the cylinder lock 1.
The first slide bar 5 slides in the arrow C direction (locking direction) by the rotation in the direction, and the left end 8 of the dial shaft 8 is rotated.
It shows that a is in contact with the second recess 5d. This state is the locked state, that is, the inner cylinder 2 of the cylinder lock 1.
The above-mentioned lock lever 33 (FIG. 3) which is interlocked with is also rotated and protruded from the door 60. At this time, as described above, the code display rings 6a of the dials 6 all display "0". The left end 8a of the dial shaft 8 is the second recess 5
Since the dial shaft 8 is in contact with d, the dial shaft 8 is moving in the direction of arrow F, and the pin 9a of each dial bush 9 is out of the dial gate 7a. Therefore, in this locked state, each dial 6 can be freely rotated. The sliding operation of the first slide bar 5 in the locked state is prohibited by the memory mechanism 50 described later.

<Unlocking Operation of Dial Shaft Operation Restricting Mechanism> Next, the unlocking operation of the dial shaft operation restricting mechanism 70 of the code lock device locked as described above will be described.

In the locked dial shaft operation restricting mechanism 70 shown in FIG. 11, by displaying the unlocking number set by rotating the dial 6 as described above, the memory mechanism 50 is set to the first position. The prohibition of the sliding operation of the slide bar 5 is released. This memory mechanism 50
The structure and operation of will be described later. FIG. 12 shows an initial state in which the inner cylinder 2 of the cylinder lock 1 is rotated in the arrow P direction (unlocking direction) by operating the key 32 to move the first slide bar 5 in the arrow G direction. As shown in FIG. 12, at this time, the left end 8a of the dial shaft 8 is in contact with the convex portion 5c of the first slide bar 5, and the dial shaft 8 is moving in the arrow D direction. For this reason, the protrusion 8b of the dial shaft 8 is projected from the base gate 30b, and the pin 9a of the dial bush 9 presses the side surface of the dial gear 7. As described in the description of the sliding movement of the first slide bar 5 in the locking direction, even during the sliding movement of the first slide bar 5 in the unlocking direction, the respective movements of the first slide bar 5 during the rotation of the dial shaft 8 are prevented. Dial bush 9
Pin 9a of the dial dial 7 of the corresponding dial gear
It is stored in a. At the end of the sliding operation of the first slide bar 5 in the unlocking direction, all the code display rings 6a display "0". Then, the unlocked state shown in FIG. 4 is entered, the inner cylinder 2 of the cylinder lock 1 is again engaged with the zero stopper 10, and the rotation of the inner cylinder 2 of the cylinder lock 1 is prohibited. At this time, the lock lever 33 (FIG. 3) that is interlocked with the inner cylinder 2 is rotated to be housed inside the door 60.
Is a state in which it can be opened and closed freely (unlocked state).

Memory Mechanism Next, the memory mechanism 50 for mechanically storing the unlocking number by the sliding operation of the first slide bar will be described.

FIG. 13 shows an essential part of the memory mechanism 50 in the unlocked state. The first slide bar 5 described above
A second slide bar 19 is provided inside the so as to slide in a slide groove 5e formed in the first slide bar 5. A groove 19a having an opening on the right side in FIG. 13 is formed on the second slide bar 19, and the bottom surface of the groove 19a (the right side surface of the second slide bar 19 in FIG. 13) is formed in a step shape. Has been done. That is,
The bottom surface of the groove 19a has a first step 19b and a second step 19c.
have. In the unlocked state shown in FIG. 13, the first
The left end 18a of the set gear shaft 18 is in contact with the stepped portion 19b. Since the set gear shaft 18 is constantly pressed in the left direction by the spring 28 arranged at the right end thereof, the left end 18a of the set gear shaft 18 has the first position.
Surely abuts the stepped portion 19b.

As described above, each dial gear 7 of the dial shaft operation restricting mechanism 70 meshes with each set gear 16 of the memory mechanism 50 through the intermediate gear 15. FIG. 14 is a front view of the set gear 16, and FIG. 15 is a side view of the set gear 16 seen from its axial direction (left direction). Each set gear 16 is axially supported by the set gear shaft 18, and a memory gear 17 is provided between the set gear shaft 18 and each set gear 16. A holding portion (not shown) fixed to the base portion 30 prevents the set gears 16 from moving in the left-right direction in FIG.
It is rotatably held around the axis 8.

The memory gears 17 arranged between the set gear 16 and the set gear shaft 18 are provided at predetermined intervals so as to slide a predetermined distance in the axial direction of the set gear shaft 18. Has been. This memory gear 17 has a memory cam 17a and memory gear teeth 17
b, the set gear support portion 17c, FIG. 16 is a front view of the memory gear 17, and FIG.
It is the side view which looked at memory gear 17 of 6 from the axial direction (right direction). FIG. 18 shows the memory gear 17 and the arm 2.
It is a figure which shows the engagement state of 0, and is the figure which looked at the memory cam 17a of the memory gear 17 from the axial direction of the set gear shaft 18. As shown in FIG. 18, in the unlocked state, the recesses 1 formed in the respective memory cams 17a
The first bent portion 20a of the arm 20 is engaged with 7d. Each arm 20 in contact with each memory cam 17a is pivotally supported by an arm shaft 36 having an axis parallel to the axial direction of the set gear shaft 18, and all arms 20 are configured to rotate simultaneously. ing.
Further, the first bent portion 20a of the arm 20 is configured to rotate about the arm shaft 36 in the direction of arrow Q in FIG. 18 by a well-known spring means so as to be constantly in contact with the outer periphery of the memory cam 17a. There is.

The memory gear teeth 17b formed on the memory gear 17 are configured to mesh with the inner peripheral gear teeth 16a formed on the inner periphery of the set gear 16. In the unlocked state shown in FIG. 13, the memory gear teeth 17b of the memory gear 17 are the inner peripheral gear teeth 16 of the set gear 16.
It is in a state not meshing with a and not interlocking.

As shown in FIG. 13, the second slide bar 1 with which the left end 18a of the set gear shaft 18 is in contact.
Reference numeral 9 is configured to slide along the sliding groove 5e of the first slide bar 5 (vertical direction in FIG. 13).
19 and 20 show the engagement state of the first slide bar 5 and the second slide bar 19, and FIG.
FIG. 20 is a cross-sectional view showing the first slide bar 5 and the second slide bar 19 shown in FIG. 13 taken along the line XX in FIG. 13, and FIG. 20 shows the first slide bar 5 and the second slide bar. It is sectional drawing which shows the place which cut | disconnected the bar 19 along the YY line of FIG. As shown in FIG. 19, the second slide bar 19 has a locking ball 34 and a spring 35 that presses the locking ball 34 against the sliding surface 5v of the sliding hole 5e of the first slide bar 5. It is provided. Second unlocked state shown in FIG. 19
In the slide bar 19, the engaging ball 34 is engaged with the first engaging groove 5f formed in the sliding surface 5v of the sliding hole 5e, and the second sliding bar 19 is prevented from moving. Has been done.

<Locking Operation of Memory Mechanism> The locking operation of the memory mechanism 50 of the code lock device configured as described above will be described.

The memory mechanism 50 shown in FIG. 13 is in the unlocked state, and this unlocked state is the state shown in FIG. 4 in the dial shaft operation regulating mechanism 70 described above. Therefore, the code display rings 6a of the dial 6 at this time all display "0". Here, if at least one dial 6 is rotated to set an unlocking number, the dial 6
The rotation of the dial gear 7 formed in the above is transmitted to the corresponding set gear 16 via the intermediate gear 15. Therefore, the set gear 16 rotates in conjunction with the dial 6 and stops at the position corresponding to the unlocking number displayed by the code display ring 6a. In the case of the code lock device of the present embodiment, since the code display ring 6a is marked with 10 kinds of numbers, the number of teeth of the dial gear 7 is 10, and the set gear 16 also has 10 teeth. Is provided. Therefore, the set gear 1 corresponds to the display of ten kinds of numbers on the code display ring 6a.
6 is configured to stop at 10 positions. Therefore, the memory gear teeth 17b formed on the memory gear 17 are also provided with ten teeth, and the ten positions of the set gear 16 can be stored.

In the unlocked state shown in FIG. 13, by setting the unlocking number by rotating the dial 6, the set gear 16 stops at the position corresponding to the unlocking number. Then, the inner cylinder 2 of the cylinder lock 1 is rotated in the locking direction by the key 32 to move the first slide bar 5 in the locking direction (arrow C). The state at this time is shown in FIG. As shown in FIG. 21, the left end 18 a of the set gear shaft 18 has a second step portion 19 of the second slide bar 19.
Get on c and move in the direction of arrow H. At this time, the second
The slide bar 19 moves along with the first slide bar 5 in the direction of arrow C due to the engagement between the locking ball 34 and the first locking groove 5f. The movement of the set gear shaft 18 in the direction of the arrow H causes the memory gear teeth 17a of the memory gear 17 to mesh with the inner peripheral gear teeth 16a of the set gear 16 at the position corresponding to the unlocking number.

By further rotating the inner cylinder 2 of the cylinder lock 1 in the locking direction, the first slide bar 5 is further moved to C.
The left end 18a of the set gear shaft 18 comes into contact with the lower surface 19d of the groove 19a of the second slide bar 19, so that the engagement between the engagement ball 34 and the first engagement groove 5f is released. Only the first slide bar 5 moves in the arrow C direction. The state at this time is shown in FIG. At this time, the dial gear 7 of the dial shaft operation regulation mechanism 70 described above is used.
Rotates with the first slide bar 5, and the rotation of the dial gear 7 also rotates the set gear 16 and the memory gear 17. Therefore, memory cam 1
The recess 17d of 7a and the first bent portion 20a of the arm 20 are not engaged. In this way, the memory mechanism 50 enters the locked state shown in FIG. As described above, the rotation position of each set gear 16 at this time corresponds to the position where "0" is displayed on the code display ring 6a.

As described in the description of FIG. 18, the arm 20
24, the memory cam 17a of each memory gear 17 is always in contact with the first bent portion 20a, and the relationship between the arm 20, the memory cam 17a, the first slide bar 5 and the like is shown in FIG.
Shown in. FIG. 24 is a view of the unlocked state of the memory mechanism 50 shown in FIG. 13 viewed from the axial direction of the set gear shaft 18. As shown in FIG. 24, the arm 20 has a first bent portion 20a that comes into contact with the memory cam 17a, and a first bent portion 20a that is led out at an angle of about 100 degrees with respect to the lead-out method. It has two bent portions 20b. A lock pin 37 is provided on the rear surface side of the first slide bar 5 (on the left side of the first slide bar 5 shown in FIG. 24). The slide bar 5 is configured to project from the back surface. In the unlocked state shown in FIG. 24,
The second bent portion 20b of the arm 20 is located at a position having a distance J from the back surface of the first slide bar 5. This second
The distance J of the bent portion 20b of the
It is determined to be longer than the distance K protruding from the back surface of the slide bar 5.

When the first slide bar 5 is moved in the locking direction (direction of arrow C) by rotating the inner cylinder 2 of the cylinder lock 1 from the unlocked state shown in FIG. 24, as described above, the memory cam 17a. Rotates with the dial 6. Therefore, when the memory cam 17a is rotated, the first bent portion 20a of the arm 20 is disengaged from the recess 17d of the memory cam 17a to be in the state shown in FIG. Figure 2
Reference numeral 5 indicates a state in which the first slide bar 5 is moving in the locking direction (arrow C direction). As shown in FIG. 25, the arm 20 is rotated in the arrow L direction by contact with the outer periphery of the memory cam 17 a, and the second bent portion 20 b of the arm 20 is located on the back surface of the first slide bar 5. It is arranged and slid at a position where it substantially comes into contact with. The tip 20c of the second bent portion 20a is formed so as to project toward the front side in the direction perpendicular to the paper surface of FIG. 25 and come into contact with the lock pin 37. It is pressed by 20b, pivots about the shaft 37a, and is housed inside the first slide bar 5.

FIG. 26 shows a state where the first slide bar 5 shown in FIG. 25 is further moved in the direction of arrow C and the first stride bar 5 is in the locked state. Figure 2
At this time, as shown in FIG.
The tip 20c of 0b passes through the lock pin 37, and the lock pin 37 projects again from the back surface of the first slide bar 5. Therefore, the lock pin 37 is engaged with the tip 20c of the first bent portion 20b. Therefore, the movement of the first slide bar 5 in the arrow G direction, that is, the unlocking direction is surely prohibited. In this way, the code lock device of the present embodiment prohibits the rotational movement of the inner cylinder 2 of the cylinder lock 1 that is interlocked with the first slide bar 5, and the door 60 is locked.

<Unlocking Operation of Memory Mechanism> Next, the memory mechanism 5 of the code lock device locked as described above.
The unlocking operation at 0 will be described.

In the locked state of the memory mechanism 50 shown in FIG. 26, the unlocking numbers set by rotating the respective dials 6 are displayed by the code display ring 6a. When the unlocking number is displayed, each set gear 16 is rotated and arranged at a position corresponding to the unlocking number.
At this time, the memory gear 17 meshed with the set gear 16 is also arranged at a position corresponding to the unlocking number. Therefore, the memory cams 17a of all the memory gears 17 are
The position of is the position shown in FIG. That is, the concave portion 17d of the memory cam 17a is at a position where it engages with the first bent portion 20a of the arm 20. Therefore, the arm 20
Tip 20c of the second bent portion 20b is lifted from the back surface of the first slide bar 5 (moved to the left in FIG. 27), and the tip 20c of the second bent portion 20b is locked by the lock pin 3.
7 and the first slide bar 5 is allowed to slide in the unlocking direction (arrow G direction).

FIG. 28 shows that in the locked memory mechanism 50 shown in FIG. 23, the unlocking number is set by rotating the dial 6 and the key 32 is rotated to operate the first slide bar. 5 is moved in the arrow G direction (unlocking direction). As shown in FIG. 28, the left end 18a of the set gear shaft 18 is in contact with the first step portion 19b of the second slide bar, and the state of the set gear shaft 18 in FIG. 28 is the locked state shown in FIG. The set gear shaft 18 has moved in the direction of arrow M. Therefore, the memory gear teeth 17 of the memory gear 17
“A” has escaped from the inner peripheral gear teeth 16a of the set gear 16, and the memory gear 17 and the set gear 16 do not rotate together. Therefore, when the first slide bar 5 is further moved in the direction of the arrow G, the dial gear 7 in the dial shaft operation restricting mechanism 70 described above is rotating, but the memory gear 17 includes the dial gear 7. Only the set gear 16 rotates without transmitting the rotation. First
By further moving the slide bar 5 in the unlocking direction (direction of arrow G), the locking ball 3 shown in FIG.
4 is disengaged from the second locking groove 5g, and the memory mechanism 50 is in the unlocked state shown in FIG.

Transmission mechanism Next, a dial shaft 8 that pivotally supports each dial 6
The transmission mechanism 40 that rotates in conjunction with the sliding operation of the first slide bar 5 will be described.

FIG. 29 is a cross-sectional view showing the transmission mechanism 40, showing the interlocking state of the first slide bar 5 and the dial shaft 8. FIG. 29 shows the first slide bar 5 shown in FIG. 19 cut at the position indicated by the line ZZ. The left end 8a of the dial shaft 8 is provided with a first transmission gear 23.
Rotates with the dial shaft 8, but the dial shaft 8 is connected to the first transmission gear 23 so as to be slidable in the axial direction. This first transmission gear 23 has a second
Of the first transmission gear 24.
The positional relationship between the third transmission gear 24 and the third transmission gear 24 is shown in FIG. As shown in FIG. 30, a third transmission gear 38 is coaxially fixed to the second transmission gear 24. In this embodiment, the first
The number of teeth of the transmission gear 23 is 12, the number of teeth of the second transmission gear 24 is 20, and the number of teeth of the third transmission gear 38 is 12. Further, the third transmission gear 38 meshes with the second rack 22, and the second rack 22 converts the linear sliding operation of the first slide bar 5 into a rotational operation and transmits it to the dial shaft 8. ing. The second rack 22 is configured as described below so as to slide in conjunction with the first slide bar 5 for a predetermined interval.

<Locking Operation of Transmission Mechanism> A protrusion 22a is formed on the second rack 22.
The reference numeral 2a is arranged so as to allow the inside of the sliding groove 5h formed in the first slide bar 5 to float with respect to the moving direction of the second rack 22. FIG. 29 shows the transmission mechanism 40 in the unlocked state. In this state, in the initial state of moving the first slide bar 5 in the direction of arrow C (locking direction), the sliding of the first slide bar 5 is performed. Lower surface 5j of groove 5h
The second rack 22 until it contacts the protrusion 22a of the second rack 22.
Rack 22 is stopped. Lower surface 5 of this sliding groove 5h
FIG. 31 shows a state where j and the protruding portion 22a are in contact with each other. Figure 3
The state shown in FIG. 1 is the state shown in FIGS. Therefore, the dial shaft 8 shown in FIG. 31 is moving in the direction of arrow D, and the protrusion 8b of the dial shaft 8 is out of the base gate 30b of the base frame 30a. During the transition from the unlocked state shown in FIG. 29 to the state shown in FIG. 31, only the first slide bar 5 is moving in the direction of arrow C, and the second rack 22 is not moving. The dial shaft 8 does not rotate but slides only in the direction of arrow D.

From the state shown in FIG. 31, when the first slide bar 5 is further moved in the direction of arrow C (locking direction),
The lower surface 5j of the sliding groove 5h of the first slide bar 5 presses the protruding portion 22a of the second rack 22 to press the second rack 22.
Is pushed up in the direction of arrow C, and the locked state shown in FIG. 32 is obtained. This locked state is the locked state shown in FIG. 11 in the dial shaft operation restricting mechanism 70 described above.
Therefore, in the locked state shown in FIG. 32, the dial shaft 8 is moving in the direction of the arrow F, and the protrusion 8b of the dial shaft 8 has the base gate 30 of the base frame 30a.
It is in b. At this time, dial 6 as described above.
All the code display rings 6a of “0” display “0”.

<Unlocking Operation of Transmission Mechanism> Next, the operation of the transmission mechanism 40, which has been locked by the above-mentioned operation, to the unlocked state will be described.

FIG. 33 shows an initial state in which the first slide bar 5 is moved in the unlocking direction (arrow G direction) in the transmission mechanism 40 in the locked state shown in FIG. The state shown in FIG. 33 is the protrusion 22 a of the second rack 22.
Is a state of being in contact with the upper surface 5k of the sliding groove 5h of the first slide bar 5. Therefore, from the locked state of FIG. 32 to FIG.
When the state is shifted to the state indicated by 3, only the first slide bar 5 is moving in the direction of the arrow G, and the second rack 22 is not moving and is in the same locked position. Therefore, when the locked state of FIG. 32 shifts to the state of FIG. 33, the dial shaft 8 does not rotate, but slides only in the axial direction (arrow D direction). Before the dial shaft 8 slides in the direction of arrow D, the protrusion 8b of the dial shaft 8 is housed in the base gate 30b of the base frame 30a, and the rotation of the dial shaft 8 is prohibited. Therefore, in the initial stage of the movement of the first slide bar 5 in the unlocking direction (the direction of arrow G), the movement of the second rack along with the movement of the first slide bar 5 is prohibited.

When the first slide bar 5 further moves in the direction of arrow G from the state shown in FIG. 33, the upper surface 5k of the sliding groove 5h of the first slide bar 5 becomes the protrusion 22a of the second rack. Abut and press the second rack 22 with arrow G
Push down in the direction. When the rotation operation of the key 32 in the unlocking direction is completed, the unlocked state shown in FIG. 29 is obtained.

As described above, by the transmission mechanism 40 of the code lock device of the present embodiment, the first slide bar 5 can be moved in a short distance in the axial direction (directions of arrows D and F) without rotating the dial shaft 8. ) To the dial shaft 8 when not sliding.
Is rotating once. In this way, since the moving distance of the first slide bar 5 of the code lock device in the present embodiment is shortened, the code lock device can be made compact.

Misoperation prevention mechanism In the code lock device of the above-mentioned embodiment, if the locker once turns the key 32 and then returns it halfway after setting the unlocking number, or the key 32 is turned. Cylinder lock 1
An erroneous operation prevention mechanism 80 is provided in order to prevent erroneous operation in which the inner cylinder 2 is rocked and the unlocking number is changed inappropriately.

The erroneous operation preventing mechanism 80 will be described below with reference to FIGS. 34 to 39. FIG. 34 is a diagram showing a main part of the erroneous operation prevention mechanism 80, and is a diagram showing a left side surface of the first slide bar 5. FIG. 35 is a rear view of the first slide bar 5 of FIG. 34 as viewed from the left. As shown in FIG. 35, the first slanted rack 5p and the second slanted rack 5q are provided on the back surface of the first slide bar 5 (on the back surface side of the code lock device).
Are juxtaposed. The racks of the first tilted rack 5p and the second tilted rack 5q are formed to have teeth that tilt in opposite directions. As shown in FIG. 34, the first inclined rack 5p is provided so as to be engageable with the first stopper 41 having the first claw 41a. Also,
The second inclined rack 5q is provided so as to be engageable with the second stopper 42 having the second claw 42a. The first stopper 41 and the second stopper 42 are constantly urged by the first spring 43 and the second spring 44 so as to press the first inclined rack 5p and the second inclined rack 5q, respectively. .

First stopper 41 and second stopper 42
A switching lever 39 is disposed between the levers, and a lever 39a is disposed on the switching lever 39 so as to project along the side surface of the first slide bar 5. This lever 3
9a is a first protrusion 5m or a second protrusion 5 projecting from the side surface of the first slide bar 5 at the final stage of the movement operation of the first slide bar 5 in the locking direction or the unlocking direction.
It is arranged so as to come into contact with n.

As shown in the rear view of FIG. 35, a first recess 39b and a second recess 39c are formed in the switching lever 39 at positions adjacent to each other, and the first recess 39b and the second recess 39b are formed.
One engaging ball 45 (FIG. 35) is alternately engaged with the recess 39c of the. This locking ball 45
Is always biased by a locking spring 46 so as to engage with the first recess 39b or the second recess 39c. Therefore, the switching lever 39 is configured to be locked at two positions where the locking ball 45 is engaged with the first recess 39b or the second recess 39c.

FIG. 36 is an enlarged view showing a main part of the erroneous operation preventing mechanism 80. As shown in FIG. 36, the first stopper 41 is formed with a first notch portion 41b that engages with a first end portion 39d formed at the lower end of the switching lever 39, and The second stopper 42 is formed with a second notch portion 42b with which a second end portion 39e formed at the upper end of the switching lever 39 is engaged. As shown in FIG. 36, the first claw 41a of the first stopper 41 engages with the first inclined rack 5p to move the first slide bar 5 only in one direction of the arrow C (locking direction). It is movable, and the movement of the first slide bar 5 in the arrow G direction (unlocking direction) is surely prohibited. On the other hand, the second claw 42a of the second stopper 42 is connected to the second inclined rack 5q.
When engaged with, the first slide bar 5 can move only in the arrow G direction, and the movement in the arrow C direction is prohibited.

<Locking operation of erroneous operation prevention mechanism> FIG.
Shows the state in which the first slide bar 5 is moving in the locking direction (arrow C direction). At this time, the first stopper 41 is not engaged with the first end portion 39d of the switching lever 39, and thus is in contact with and engaged with the first inclined rack 5p. On the other hand, the second stopper 42 is locked by the second end 39e of the switching lever 39, and is not abutted on the second inclined rack 5q.

FIG. 38 shows a state where the first slide bar 5 is further moved in the locking direction (direction of arrow C) from the state shown in FIG.
As shown in FIG. 38, the first claw 4 of the first stopper 41
1a rides on the first pedestal 5r of the first slit bar 5. At this time, the lever 39a of the switching lever 39 is in contact with the first protrusion 5m of the first slide bar 5, and the lever 39a is pressed in the direction of arrow C by the first protrusion 5m. Therefore, the second end 39e of the switching lever 39 has the second cutout portion 42b of the second stopper 42.
Is out of. On the other hand, the first end 39d of the switching lever 39 is engaged with the first cutout portion 41b of the first stopper 41. Therefore, the second stopper 42 is
The slanted rack 5q of FIG.
The stopper 41 is locked by the switching lever 39 at a position where it does not come into contact with the first inclined rack 5p.

<Unlocking operation of erroneous operation preventing mechanism> FIG.
From the locked state shown in (1), the unlocking number is displayed on the dial shaft operation restricting mechanism 70, etc., and the key 32 is rotated to move the first slide bar 5 in the unlocking direction (arrow G direction). Move to. FIG. 39 shows that the first slide bar 5 is moving in the unlocking direction. In FIG. 39, since the second stopper 42 is engaged with the second inclined rack 5q, the movement of the first stopper 5 in the locking direction (arrow C direction) is prohibited, and the unlocking direction ( It is movable only in the direction of arrow G). Figure 3
When the first slide bar 5 is further moved in the direction of arrow G from the state shown in FIG. 9, the unlocked state shown in FIG. 34 is obtained. As shown in FIG. 30, in the unlocked state, the second
The stopper 42 rides on the second pedestal 5s of the first stopper 5, and the lever 39a of the switching lever 39 is in contact with the second protrusion 5n of the first slide bar 5. Therefore, the second stopper 42 is locked by the switching lever 39, and the first stopper 41 abuts and engages with the first inclined rack 5p.

As described above, by providing the erroneous operation preventing mechanism 80 in the code lock device of the present embodiment, the inner cylinder 2 of the cylinder lock 1 interlocking with the first slide bar 5 can rotate only in one direction. The locker is prohibited from making a mistaken operation such as turning the key 32 once and then returning it in the middle, or swinging the inner cylinder 2 of the cylinder lock 1 with the key 32. The code lock device is capable of locking.

In the code lock device of this embodiment, the cylinder lock 1 has a known emergency unlocking mechanism so that the locker can open the door or the like if he forgets the unlocking number. It is provided. That is, by inserting the master key into the cylinder lock 1, the inner cylinder of the cylinder lock 1 and the lock bar 33 (FIG. 3) for locking the door and the like are not interlocked with each other, and the lock bar 33 is rotated by rotating the master key. It is an emergency unlocking mechanism that can rotate only the door to unlock the door.

FIG. 40 is a front external view showing another embodiment of the code lock device of the present invention. In the embodiment described above, the inner cylinder of the cylinder lock was rotated by the key operation, but in the embodiment shown in FIG. 40, the handle 47 interlocked with the inner cylinder of the cylinder lock.
Is provided to lock and unlock the code lock device, and other internal mechanisms are the same as those in the above-described embodiment. However, the handle 47 is also provided with a key hole 47a for a master key for using the master key as an emergency unlocking means. By using the code locking device of this embodiment, the locker does not need to carry the key, and the code locking device is easier for the locker to handle.

[0061]

As described above, according to the code lock device of the present invention, any unlocking number can be easily set by the dial operation by the locker, and unauthorized use by a third party is surely prohibited. Locking accurately, accurately and surely
There is an effect that a compact code lock device that can be unlocked and does not require a power supply can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing the inside of a code lock device according to an embodiment of the present invention.

FIG. 2 is a front view showing the outer shape of the code lock device of FIG.

3 is a side view of the code lock device of FIG. 2. FIG.

FIG. 4 is an enlarged view of an essential part showing a part of the code lock device of FIG. 1 in cross section.

5 is a diagram showing the relationship between the dial shown in FIG. 4 and a first slide bar.

6 is a diagram showing the relationship between the dial shaft and the base frame shown in FIG.

FIG. 7 is a diagram showing a relationship between the dial shown in FIG. 4 and a zero stopper.

8 is a diagram showing the relationship between the dial shown in FIG. 4 and a zero stopper.

9 is an operation explanatory view of a dial shaft operation restricting mechanism in the code lock device shown in FIG.

10 is an operation explanatory view of a dial shaft operation restricting mechanism in the code lock device shown in FIG.

11 is an operation explanatory view of a dial shaft operation restricting mechanism in the code lock device shown in FIG.

12 is an operation explanatory view of a dial shaft operation restricting mechanism in the code lock device shown in FIG.

13 is an operation explanatory view of the memory mechanism in the code lock device shown in FIG.

14 is a front view of a set gear in the memory mechanism of FIG.

FIG. 15 is a side view of the set gear of FIG. 14 as viewed from its axial direction.

16 is a front view of a memory gear in the memory mechanism of FIG.

FIG. 17 is a side view of the memory gear of FIG. 16 seen from its axial direction.

FIG. 18 is a view showing a relationship between a memory gear and an arm of the memory mechanism shown in FIG.

19 is a cross-sectional view of the first slide bar of FIG. 13 taken along line XX.

20 is a sectional view of the first slide bar of FIG. 19 taken along line YY.

21 is an operation explanatory view of the memory mechanism in the code lock device shown in FIG. 1. FIG.

22 is an operation explanatory view of the memory mechanism in the code lock device shown in FIG. 1. FIG.

23 is an explanatory view of the operation of the memory mechanism in the code lock device shown in FIG. 1. FIG.

FIG. 24 is an operation explanatory view of the first slide bar and the arm of the memory mechanism of FIG.

FIG. 25 is an operation explanatory view of the first slide bar and the arm of the memory mechanism of FIG.

26 is an operation explanatory view of the first slide bar and the arm of the memory mechanism of FIG.

FIG. 27 is an operation explanatory view of the first slide bar and the arm of the memory mechanism of FIG. 13.

28 is an operation explanatory view of the memory mechanism in the code lock device shown in FIG. 1. FIG.

29 is an operation explanatory diagram illustrating a transmission mechanism in the code lock device illustrated in FIG. 1. FIG.

30 is a side view of the transmission mechanism of FIG. 25.

31 is an operation explanatory diagram illustrating a transmission mechanism in the code lock device illustrated in FIG. 1. FIG.

32 is an operation explanatory diagram illustrating a transmission mechanism in the code lock device illustrated in FIG. 1. FIG.

33 is an operation explanatory view illustrating a transmission mechanism in the code lock device shown in FIG. 1. FIG.

34 is an operation explanatory view illustrating an erroneous operation prevention mechanism in the code lock device shown in FIG.

35 is a rear view of the first slide bar and the like shown in FIG.

36 is an operation explanatory view showing a main part of the erroneous operation prevention mechanism of FIG. 34.

37 is an operation explanatory view illustrating an erroneous operation prevention mechanism in the code lock device shown in FIG. 1. FIG.

38 is an operation explanatory diagram illustrating an erroneous operation prevention mechanism in the code lock device illustrated in FIG. 1. FIG.

39 is an operation explanatory view illustrating an erroneous operation prevention mechanism in the code lock device shown in FIG. 1. FIG.

FIG. 40 is a front view showing another embodiment of the code lock device of the present invention.

[Explanation of symbols]

 1 Cylinder Lock 5 1st Slide Bar 6 Dial 7 Dial Gear 10 Zero Stopper 17 Memory Gear 40 Transmission Mechanism 50 Memory Mechanism 70 Dial Shaft Operation Restriction Mechanism 90 Locking Mechanism

Claims (5)

[Claims] 1. A locking part having a locking mechanism for locking a door, a first slide bar part which reciprocally slides in a locking direction or an unlocking direction by the operation of the locking part, and a sliding motion of the first slide bar part. There is at least one dial pivotally supported by a dial shaft which is substantially orthogonal to the direction and is in constant contact with the first slide bar portion, and a plurality of types of codes are printed on the outer periphery of the dial. A dial part that displays one type of code to the outside, a dial shaft operation restriction part that displays a predetermined type of code of the dial part when locking and unlocking, and when the dial part is unlocking When displaying a predetermined one type of code, prohibiting the operation of the locking part,
A zero stopper portion that enables the locking portion to operate by rotating at least one dial; a transmission portion that rotates the dial shaft at least once by one-way sliding movement of the first slide bar portion; A memory unit that has a memory gear that interlocks with a dial unit, and stores the unlocking number displayed by the dial by the sliding operation of the first slide bar unit in the locking direction. A memory unit that enables sliding movement of the first slide bar unit in the unlocking direction when a lock number is displayed on the dial, and a locking direction or an unlocking direction of the first slide bar unit.
In the reciprocating sliding motion, the
A code lock device, comprising: an erroneous operation prevention mechanism that prohibits a sliding operation . 2. The locking unit has a lock mechanism for locking the door and a cylinder lock having an inner cylinder that interlocks with the lock mechanism, and the first slide bar unit reciprocates by the rotating operation of the inner cylinder. The code lock device according to claim 1, wherein the code lock device is configured to slide. 3. An inner peripheral gear tooth, wherein the memory portion is disposed between a memory gear and a set gear shaft that axially supports the memory gear and can mesh with the memory gear tooth formed on the memory gear. And a second slide bar that slides for a predetermined distance in the same direction as the sliding direction of the first slide bar portion, with the shaft end of the set gear shaft always abutting and engaging with each other. The code lock device according to item 1. 4. A dial notch portion engaging with a dial cam provided on a zero stopper when the dial portion displays one predetermined code, and at least one dial is pivoted to rotate the dial cam. 3. The code lock device according to claim 2 , wherein the engagement between the dial cam and the toothless portion is disengaged, and the inner cylinder of the cylinder lock is rotatable. 5. The memory unit has an arm that engages with a recess of a memory cam formed on the memory gear, and when the memory gear has a mechanically stored unlocking number, the arm is the memory cam. 4. The code lock device according to claim 3 , wherein the code lock device is configured to engage with the recess of the first slide bar to enable the sliding motion of the first slide bar in the unlocking direction.