JPH09317271A - Coded lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically break an unlocking code line by associating dials with locking operation. SOLUTION: A driving shaft 91 is provided in parallel to an operating shaft 20, on which plural dials 50 are arranged, to be reciprocally and rotationally movable. Driven gears 53 are formed integrally with the dials 50, respectively. On the driving shaft 91, driving gears 92 are arranged to be rotationally movable and reciprocally movable on the driving shaft 91 so that they can be engaged with the driven gears 53 for the dials 50. A clutch mechanism 93 is intervened between the driving shaft 91 and the driving gear 92. A cutout is formed in teeth on the outer peripheries of the driven gears 53 to be disengaged from the driving gears 92 when the dials 50 are at proper angles to produce an initial code line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for use in a safe deposit box or a locker, and more particularly, the present invention allows an unlock code sequence to be arbitrarily set by a plurality of dials. Code locking device.

[0002]

2. Description of the Related Art Generally, a code lock device is attached to, for example, a door of a rental locker, an actuator responds to an unlocking operation and a locking operation, and a latching piece integrated with the actuator rotates forward and backward, It has a structure that engages with and disengages from the metal fittings on the rocker body side. As a conventional code lock device, a device in which only a code lock mechanism is incorporated (hereinafter referred to as a "first type"), and a device in which a cylinder lock mechanism is incorporated in the actuator in addition to the code lock mechanism (Hereinafter, referred to as “second type”), but any type is suitable for applications in which the user constantly changes because the unlock code string can be set arbitrarily and can be changed at any time.

At the time of locking, a desired unlocking code string is set by a dial operation, then the first type is used to grasp and rotate, and in the second type, an appropriate key is inserted into a keyhole. To rotate. As a result, the actuator is responsive to the engaging piece engaging the receiving fitting. Thereafter, if the unlock code string is appropriately broken by a dial operation, the code lock is in a locked state.

[0004] In unlocking, after the unlocking code string is aligned by dial operation, in the first type, a photographer is grasped and rotated in the opposite direction to the above, and in the second type, an appropriate operation is performed. The key is inserted into the keyhole and rotated in the opposite direction. As a result, the actuator is actuated to disengage the hooking piece from the receiving metal fitting, and the door of the rental locker or the like can be opened. After that, the unlocking code string is broken and returned to the locked state after performing the locking operation, or the unlocking code string is broken without performing the locking operation.

[0005]

However, if the user forgets to break the unlock code sequence during locking, the first type does not lock the code lock and does not function as a lock.
In the second type, when the key is removed, the cylinder lock is in a locked state, so that the cylinder lock functions as a lock.
Since the key is unlocked, the security effect is halved.

Therefore, the inventor has recently proposed a structure in which each dial is forcibly rotated in conjunction with the locking operation to automatically break the unlock code sequence and return to a predetermined initial code sequence. A code lock device was proposed (Japanese Patent Application No. 5-273).
61). In this code lock device, a dial forced return mechanism is formed on an operating shaft supporting a plurality of dials, and the dial forced return mechanism is made to respond to reciprocation and rotation of the operating shaft to break the unlock code sequence. Like that. According to this code lock device, the unlocking code sequence is automatically broken by the locking operation, so that the reliability of the code lock device is enhanced, and the dial forced return mechanism is configured on one operating shaft. There is an advantage that the code lock device can be downsized, but on the other hand, there is a problem that the load applied to the operating shaft increases.

The present invention provides a code lock device that breaks an unlock code sequence by automatically interlocking each dial with a locking operation in a manner different from the conventional one, and automatically returns to a predetermined initial code sequence. It is intended to enhance the reliability of the lock device.

Another object of the present invention is to provide:
An object of the present invention is to provide a code lock device in which a load applied to an operation shaft is reduced by providing a drive shaft in parallel with the operation shaft and forming a dial forcible return mechanism on the drive shaft.

Another object of the present invention is to provide a code lock device that can reliably return to a predetermined initial code sequence by devising the structure of a dial forcible return mechanism.

[0010]

According to the present invention, there is provided a code locking device comprising: a plurality of dials each having a plurality of codes; an operating shaft rotatably supporting each dial at a predetermined position;
An actuator responsive to an unlocking operation and a locking operation,
An unlock code sequence setting mechanism that can set the unlock code sequence by each dial, a lock mechanism that allows the actuator to operate when the unlock code sequence is aligned and restricts the actuator operation when the unlock code sequence is not aligned, and a locking operation And a forcible return mechanism for rotating each dial on the operating shaft to return to a predetermined initial code sequence. The dial forced return mechanism, a driven gear provided integrally with each dial,
A drive shaft provided so as to be capable of reciprocating and rotating in parallel with the operating shaft, and a reciprocating mechanism provided between the actuator and the drive shaft for reciprocating the drive shaft in response to operation of the actuator. A rotating mechanism provided between the actuator and the drive shaft for rotating the drive shaft in response to operation of the actuator, and corresponding to each dial on the drive shaft so as to mesh with a driven gear of each dial. And a clutch mechanism provided between the drive shaft and each drive gear, the clutch mechanism being configured to disengage the drive shaft and each drive gear by reciprocation of the drive shaft. A notch is formed on the tooth surface of each of the driven gears so that when each dial is at an angular position for generating the initial code sequence, the engagement with the drive gear is released.

[0011]

[Action] When the actuator responds to the locking operation,
Since the drive shaft operates and the clutch mechanism engages each drive gear with the drive shaft, rotation of the drive shaft is transmitted to each drive gear and further transmitted from each drive gear to the driven gear. As a result, each dial rotates, and the alignment of the unlock code sequence is automatically broken. When each dial is at an angular position for generating an initial code sequence, the notch provided in the driven gear disengages the driving gear and the driven gear, and the dial stops reliably without continuing to rotate. .

[0012]

1 shows the appearance of a code lock device according to an embodiment of the present invention, and FIGS. 2 and 3 show the internal structure of the code lock device. This code lock device is attached to, for example, a door of a locker for rent, and a locking piece 1 rotates forward and backward by a certain angle to be disengaged from a metal fitting 2 of the locker for rent.

In the following description, the state in which the hook 1 is engaged with the receiving fitting 2 is referred to as a "closed state", the state in which the closed state is locked is referred to as a "locked state", and the state in which the lock is released. Is referred to as an "unlocked state", a state in which the latch piece 1 is disengaged from the receiving bracket 2 is referred to as an "open state", and operations from the "open state" to the "locked state" are referred to as "locking operation" and "closed state". The operation from the operation through the “unlocked state” to the “open state” is referred to as “unlocked operation”. 1 to 3 show the appearance and internal structure of the code lock device in the “open state”.

The code lock device of the illustrated example is the first type code lock device in which only the code lock mechanism is incorporated. However, if the cylinder lock mechanism is incorporated in the actuator 10 described later, the second lock device becomes the second type. A code lock device of the type can be constructed.

In this code lock device, the upper surface opening of the box-shaped case 6 is closed by the front plate 3, and a circular opening 4 is provided near one end of the front plate 3, and from the center to the other end. , Four window holes 5 are respectively provided. An actuator 10 is incorporated in the box-shaped case 6 at the position of the opening 4, and a code lock mechanism is incorporated at the position of the four window holes 5. From the opening 4, an end plate 11 of an inner cylinder 12, which will be described later, protrudes above the front plate 3, and an image 110 for locking and unlocking operation is attached to the end plate 11. Note that FIG. 2 and FIGS. 4 to 7 to be described later are shown with the shooting 110 removed.

The shooting 110 has a keyhole 111 for inserting a master key. The master key is
It is used for emergency processing when the person who sets the unlock code string forgets the unlock code string. If a cylinder lock mechanism is incorporated in the actuator 10, the keyhole 1
Not only the master key, but also a key for unlocking the cylinder lock is inserted into the key 11.

Four dials 50 used for setting an unlock code string are arranged at the positions of the respective window holes 5. A dial operation plate 51 of each dial 50 is provided from each window hole 5. It protrudes above the front plate 3. Each window hole 5
Each of the rectangular holes 8 has a long hole 7 for projecting the dial operation plate 51 and a rectangular hole 8 continuous with the long hole 7.
The symbols shown on the respective dials 50 can be seen from.

The lock device of the illustrated example has a structure for locking and a structure for setting an unlock code string, and a predetermined initial code by breaking the unlock code string with the locking and unlocking operations. It includes a configuration for returning to a row (in the illustrated example, a code row in which four zeros are arranged).
0, the operating shaft 20, the rotating mechanism 30, the reciprocating mechanism 40, the four dials 50, the unlock code string setting mechanism 60, the lock mechanism 80, the dial forcible return mechanism 90, and the like will be sequentially described.

(1) Structure of the Actuator 10 The actuator 10 responds to the unlocking operation and the locking operation by the photographing 110. The inner cylinder 12 is rotatably supported in the bearing cylinder 14, and the inner cylinder 12 And bearing sleeve 14
An outer cylinder 13 is rotatably fitted on the outer periphery of the outer cylinder. Outer cylinder 1
The sleeve 15 is rotatably fitted at an upper position on the outer periphery of the sleeve 3, and a bevel gear 31 constituting the rotating mechanism 30 is fitted slightly below the center of the height.

Inside the inner cylinder 12, a first lock mechanism portion 16 which is operated by inserting a master key in an upper position and a second lock mechanism in which a known cylinder lock mechanism can be incorporated in a lower position is provided. The mechanism portion 17 is provided with a third lock mechanism portion 18 that constitutes a lock mechanism 80 described later at an intermediate position.

The first lock mechanism 16 is loaded with a plurality of disk tumblers. When the master key is not inserted, some of the disk tumblers are inserted into grooves provided on the inner peripheral surface of the outer cylinder 13. The inner cylinder 12 and the outer cylinder 13 are integrated so as to be engaged with each other. When the master key is inserted, a part of the disk tumbler is actuated to disengage the groove of the outer cylinder 13 and only the inner cylinder 12 can rotate independently. In addition,
Although a similar disk tumbler can be loaded in the second lock mechanism 17 to form a disk lock, the disk tumbler is not loaded in the second lock mechanism 17 of this embodiment. And therefore does not function as a lock.

A plurality of disk tumblers 81 are loaded in the third locking mechanism 18, and these disk tumblers 81 are retracted into the inner cylinder 12 in the unlocked state, while the bearing cylinder is spring-loaded in the locked state. Lock hole 19 provided in 14
And regulate the rotation of the inner cylinder 12. The disk tumbler 81 will be described in detail in the section of the lock mechanism 80.

(2) Structure of the Working Shaft 20 As shown in FIG. 8, the working shaft 20 has a hollow hole 21 opened in the base end face. The base end is supported by a bearing hole 24 of the support plate 23 so that the front end can reciprocate in a direction orthogonal to the actuator 10. The hollow hole 2
A compression spring 25 is incorporated in 1, and the operating shaft 20 is constantly urged toward the actuator 10 by the spring force. Four partition plates 26 are provided between the support plate 23 and the support shaft 22.
Are provided at regular intervals, and the operating shaft 20 passes through a circular hole 27 formed in each partition plate 26.

A guide roller 28 is provided on the tip end surface of the operating shaft 20.
A bevel gear 32 constituting a rotating mechanism 30 is slidably and rotatably provided on the operating shaft 20 on the distal end of the operating shaft 20. On the peripheral surface of the operating shaft 20, four protrusions 82 constituting the lock mechanism 80 are provided integrally at predetermined intervals at an equal angular position.

(3) Structure of the Rotating Mechanism 30 The rotating mechanism 30 is used to rotate a drive shaft 91 of a dial forcible return mechanism 90 to be described later during a locking operation and an unlocking operation. Bevel gear 3 mounted on cylinder 13
1, a bevel gear 32 provided on the operating shaft 20,
And a spur gear 33 attached to the tip of the drive shaft 91. The bevel gears 31 and 32 mesh with each other, and the bevel gear 32 meshes with a spur gear 33, whereby the rotation of the actuator 10 is transmitted to the drive shaft 91 by these gear groups, and the drive shaft 91 rotates. . The drive shaft 91 moves from the “open state” to the “closed state” and from the “closed state” to the “open state” during the transition, respectively.
The configuration of the rotation mechanism 30, specifically, the pitch of the teeth of each of the gears 31 to 33 is determined so as to rotate.

As shown in FIG. 14, the bevel gear 31 has an inner groove 34 formed with an engagement groove 35 extending over a predetermined angle range θ, and the engagement groove 35 projects from the outer peripheral surface of the outer cylinder 13. The provided driving projection 36 is engaged. This engagement groove 35
An operation delay mechanism for delaying the operation start timing of the bevel gear 31 with the driving protrusion 36 is configured. When the outer cylinder 13 rotates during the locking operation and the unlocking operation, the driving protrusion 36 is initially engaged with the engagement groove 35. As a result, the bevel gear 31 does not immediately rotate integrally, but rotates integrally when the drive projection 36 reaches the end of the engagement groove 35. This operation delay mechanism is provided by the drive shaft 9 of the dial forcible return mechanism 90.
1 is firstly moved and then rotated continuously, the details of which will be described later.

(4) Structure of the reciprocating mechanism 40 The reciprocating mechanism 40 reciprocates the drive shaft 90 by a predetermined displacement at a predetermined timing in response to the operation of the actuator 10. It comprises a pressing roller 41 provided at a predetermined angular position on the lower outer peripheral surface, and a movable body 42 which is pushed by the pressing roller 41 and reciprocates in a direction along the drive shaft 91 when the outer cylinder 13 rotates.

The movable body 42 is provided with the actuator 1
0, a concave curved surface 43 on which the pressing roller 41 rolls.
Is formed on the upper surface of the end of the movable body 42, and a shaft support 44 for rotatably holding the distal end of the drive shaft 91.
Are integrally formed upward. The movable body 42 is supported at the distal ends of two support rods 45, 45 erected in parallel with the operating shaft 20. A stopper 47 attached to the base end of each support rod 45 and a box-shaped case 6 are provided. Compression springs 46, 46 for urging the respective support rods 45 in the direction of the actuator 10 are provided between the end walls. In addition, the stopper 47 is for restricting displacement of a row of the lock gears 52 described later.

The concave curved surface 43 of the movable body 42
The angle range is slightly smaller than the rotatable angle of 0 (120 degrees in this embodiment). When the pressing roller 41 is in the “open state” in FIG. 2 and the “closed state” in FIG. 5, the pressing roller 41 is separated from the concave curved surface 43 of the movable body 42, but changes from the “open state” in FIG. At the time of transition or transition from the “closed state” to the “open state” in FIGS. 6 and 7, the vehicle rides on the concave curved surface 43 of the movable body 42 and pushes the movable body 42 to displace the movable body 42 by a fixed amount. Slides on the concave curved surface 43 in the retracted state. At this time, the shaft support 44 integrated with the movable body 42
Is also displaced in the axial direction, and the drive shaft 91 held by the shaft support 44 is displaced similarly.

(5) Configuration of Dials 50 Each of the four dials 50 is rotatably provided at a position inside the respective partition plate 26 on the operating shaft 20 via a lock gear 52. Each dial 50 has a cylindrical wall 54.
A dial operating plate 51 is provided near one end of the cylindrical wall 53, and a driven gear 53 is further provided integrally therewith, and the outer peripheral surface of the cylindrical wall 53 is set to "0" at each equiangular position. To “9”. The driven gear 5
3 constitutes a forced dial return mechanism 90 together with the drive shaft 91 and four drive gears 92 rotatably provided on the drive shaft 91. For details of the forced dial return mechanism 90, It will be newly explained.

(6) Structure of unlock code string setting mechanism 60 The unlock code string setting mechanism 60 is a mechanism for freely setting and storing the unlock code string, and reciprocates the operating shaft 20. And a meshing mechanism for setting an engagement state between each dial 50 and each lock gear 52. Here, the unlock code sequence refers to a sequence of codes for setting the code lock to the "unlocked state" by the alignment among the sequences of the codes of the dials 50 appearing in the window holes 5 described above. In the following description, the code of each dial 50 forming the unlock code string may be simply referred to as “unlock code”.

The displacement mechanism includes the actuator 10
The operation shaft 20 is reciprocated in response to the operation of
A predetermined angle (120 in this embodiment) is formed on the outer peripheral surface of the outer cylinder 13.
The first and second recesses 70A and 70B formed at an angle smaller than the angle, three openings 71 provided in the sleeve 15 at every 120 degrees, and provided on the upper end surface of the outer cylinder 13. It is constituted by a claw plate 73 which can be engaged and disengaged with a notch 72 formed at every 120 degrees on the upper end surface of the sleeve 15, and the compression spring 25 provided in the hollow hole 21 of the operating shaft 20.

In the "open state" shown in FIGS. 2 and 3, the first recess 70A of the outer cylinder 13 and one of the openings 71 of the sleeve 15 overlap each other, and Opposing position. The operating shaft 20 is pushed by the spring force of the compression spring 25, and the guide roller 28 is moved from the opening 71 of the sleeve 15 to the first recess 70 </ b> A of the outer cylinder 13.
To fit. In this fitted state, the operating shaft 20 is most displaced toward the actuator 10, and this position is hereinafter referred to as a "first displacement position".

FIG. 4 shows a state at the time of transition from the “open state” to the “closed state”. In this state, as a result of the outer cylinder 13 and the sleeve 15 being engaged by the claw plate 73 and rotating together, the guide roller 28 at the tip of the operating shaft 20 rides on the outer peripheral surface of the sleeve 15. In this state, the operating shaft 20 is most displaced in the opposite direction with respect to the actuator 10, and this position is hereinafter referred to as a "second displacement position".

In the "closed state" shown in FIG. 5, the opening 71 of the sleeve 15 is
8, the second recess 70B of the outer cylinder 13 is displaced from the opening 71 by a slight angle. The operating shaft 20 is pushed by the spring force of the compression spring 26, and the guide roller 28 fits into the opening 71 of the sleeve 15,
It hits the outer peripheral surface of the outer cylinder 13. In this state, the operating shaft 20 is located in the middle of the "first displacement position" and the "second displacement position". Hereinafter, this position is referred to as a “third displacement position”.

FIG. 6 shows a state when the state is slightly shifted from the “open state” to the “closed state”.
The state at the time of further shifting is shown.
When shifting from the “open state” to the “closed state”, the engagement between the outer cylinder 13 and the sleeve 15 by the claw plate 73 is released, and the outer cylinder 1
As a result of the rotation of only 3, the second concave portion 70B of the outer cylinder 13 and the opening portion 71 of the sleeve 15 overlap immediately after the start of the transition shown in FIG. 6, and are positioned to face the guide roller 28 at the tip of the operating shaft 20. At this time, the operating shaft 20 is pushed by the spring force of the compression spring 25, and the guide roller 28 is
5 is fitted into the first recess 70A of the outer cylinder 13 through the opening 71, and the operating shaft 20 moves to the above-mentioned "first displacement position".

During the transition from the “open state” to the “closed state” shown in FIG. 7, only the outer cylinder 13 further rotates,
The guide roller 28 at the leading end of the sleeve 15 has the opening 7 of the sleeve 15.
1 and rides on the outer peripheral surface of the outer cylinder 13. In this riding state, the operating shaft 20 is located in the middle between the “first displacement position” and the “second displacement position”, that is, in the “third displacement position”.

Next, the meshing mechanism, as shown in FIG.
One row of protrusions 61 provided on the inner peripheral surface of each dial 50
As shown in FIG. 16 and FIG.
And two protruding rows 64a and 64b provided on the outer peripheral surface of the main body 2. Protrusion rows 64a, 64 of each lock gear 52
A sliding groove 68 having a width slightly larger than the width of the row of protrusions 61 of the dial 50 is formed between b.

In the protruding row 61 of each dial 50, a number (10) of fitting grooves 63 corresponding to the number of codes are formed between the adjacent protruding pieces 62,62. Each protruding row 64a, 64b of each lock gear 52 is formed by arranging a predetermined number (five in this example) of fitting protrusions 65 that can be fitted into any of the fitting grooves 63. The angular position of the engagement between the protruding row 61 and the corresponding protruding rows 64a, 64b of the lock gear 52, that is, the dial 50 with respect to the lock gear 52
There are a number of fitting angle positions corresponding to the number of codes. Therefore, the unlock code can be set in ten ways according to the fitting angle positions of the two.

The operation of the above-described meshing mechanism includes, in addition to the above-described displacement mechanism, a compression spring 66 provided between the lock gear 52 closest to the actuator 10 and the operating shaft 20;
A stopper ring 67 provided on the operating shaft 20 corresponding to each lock gear 52, and a stopper 47 provided opposite the lock gear 52 farthest from the actuator 10.
Controlled by and. The compression spring 66 urges the row of lock gears 52 in a direction opposite to the actuator 10.
Each stopper ring 67 sets a transition restriction position of each lock gear 52 on the operating shaft 20. Stopper 4
7 sets the row of the lock gears 52 and the shift control position of the operating shaft 20.

FIGS. 8 to 11 show how the dials 50 and the lock gears 52 are engaged with each other. FIG. 8 shows an unlocked state, FIG. 9 shows a locking operation, FIG. 10 shows a locked state, and FIG. Are the states during the unlocking operation. At the time of unlocking in FIG.
0 is in the “first displacement position”, and each lock gear 52 is in a state of contacting the stopper ring 67. In this state, the row 61 of the dials 50 is not meshed with any row 64a, 64b of the lock gear 52,
The connection between each dial 50 and the lock gear 52 is cut off. Therefore, each dial 50 can rotate independently,
Any unlocking code can be set.

At the time of the locking operation shown in FIG. 9, the operating shaft 20 is in the "second displacement position", and the row of the lock gears 52 is in contact with the stopper 47. In this state, the protruding row 61 of each dial 50 is connected to one protruding row 6 of each lock gear 52.
4a, and the unlock code string is stored. At this time, the respective dials 50 and the respective lock gears 52 are integrally rotated by the operation of a forcible dial return mechanism 90 described later.

At the time of locking shown in FIG.
Displaced position ", and the row of lock gears 52
7. In this state, each dial 5
0 is the other row 64 of the lock gears 52.
The unlock code string is stored in mesh with b. Therefore, each dial 50 and each lock gear 52 are in a state where they can rotate integrally, and the unlock code can be aligned by the dial operation for unlocking.

In the unlocking operation shown in FIG. 11, the operating shaft 20 is at the “third displacement position”, and the row of the lock gears 52 is separated from the stopper 47, that is, the row of the lock gears 52 is moved by the spring force of the compression spring 66. It is in an energized state.
In this state, the protruding row 61 of each dial 50 is located in the sliding groove 68 of each lock gear 52, and any protruding row 64
a and 64b are not engaged with each other, and each dial 50 and each lock gear 52 are disconnected. Therefore, each dial 50 is in a state where it can rotate independently, and each dial 50 rotates by the operation of a dial forcible return mechanism 90 described later.

(7) Configuration of Lock Mechanism 80 When all the codes of the dials 50 appearing in the window holes 5 are unlock codes (when an unlock code string is generated), the lock mechanism 80 When the code of any of the dials 50 appearing in each window hole 5 is not an unlock code (when the unlock code string is broken), the operation of the actuator 10 is restricted.

The lock mechanism 80 of this embodiment includes a plurality of disk tumblers 81 (see FIGS. 2 to 7) mounted as the third lock mechanism 18 in the inner cylinder 12 of the actuator 10 and a bearing cylinder of the actuator 10. Operating shaft 20 on 14
A lock hole 19 (see FIGS. 2 to 7) opened in the direction of FIG.
), Four protrusions 82 (see FIGS. 8 to 11) protruding from the shaft peripheral surface of the operating shaft 20, and respective protrusions provided in the length direction of the inner peripheral surface of each lock gear 52. The protrusion engaging groove 84 engaging and disengaging from the child 82 (see FIGS. 8 to 11, 16, and 17).
And engagement projections 85 (see FIGS. 8 to 11 and 16) protruding at predetermined angular positions on the outer peripheral surface of each lock gear 52, and provided at predetermined angular positions in the circular holes 27 of each partition plate 26. It comprises a rectangular notch 86 (see FIGS. 8 to 11) which engages with and disengages from the engaging projection 85.

When the disc tumbler 81 is in the "closed state" in FIG. 5, the disc tumbler 81 projects into the lock hole 19 by a spring force and engages with the bearing cylinder 14, whereby the inner cylinder 12 and the outer cylinder 13 rotate integrally. And the operating piece 83 is pushed out in the direction of the operating shaft 20, and the tip end of the operating piece 83 is projected into the second recess 70 </ b> B of the outer cylinder 13. An enlarged portion 19 is provided at a portion of the lock hole 19 where the
a is formed and is in the “closed state” in FIG. 5, the inner cylinder 1
When 2 and the outer cylinder 13 are integrally rotated by a slight angle, the second recess 70B of the outer cylinder 13 is aligned with the opening 71 of the sleeve 15 (see FIG. 6). In this state, if the unlock code strings are aligned, the operating shaft 20 is displaced in the direction of the actuator 10, the guide roller 28 at the distal end retracts the operating piece 83 into the lock hole 19, and the disk tumbler. 81 is pushed out from the lock hole 19 to release the locked state.

Each of the projections 82 of the operating shaft 20 is engaged in the projection engagement groove 84 of each lock gear 52 when the “open state” in FIG. 8 is in effect, thereby restricting the rotation of each lock gear 52.
At this time, since each dial 50 is disconnected from the lock gear 52, the unlock code can be set by rotating each dial 50.

At the time of transition from the “open state” to the “closed state” in FIG. 9, each of the projections 82 of the operating shaft 20 escapes from the projection engaging groove 84 of each of the lock gears 52, and each of the lock gears 52 is Is rotatable with respect to. At this time, each dial 50 is in a state of being engaged with the lock gear 52, and each dial 50 and each lock gear 52 are integrally rotated by the operation of the dial forcible return mechanism 90.

Also in the "closed state" of FIG.
Each of the protrusions 82 escapes from the protrusion engagement groove 84 of each lock gear 52, and each lock gear 52 is in a rotatable state with respect to the operating shaft 20. At this time, each dial 50 is
It is in a state related to 2. In this state, the protrusion 82 and the protrusion engagement groove 84 of the dial 50 whose unlocking code is broken are misaligned, and the movement of the operating shaft 20 in the direction of the actuator 10 is prevented. The dial 50
Are matched, the positions of the protrusion 82 and the protrusion engagement groove 84 match, and the movement of the operating shaft 20 in the direction of the actuator 10 is allowed.

At the time of transition from the “closed state” to the “opened state” in FIG.
And the rotation of each lock gear 52 is restricted. At this time, each dial 50 is in a state of being disengaged from each lock gear 52, and each dial 50 is independently rotated by the action of the dial forcible return mechanism 90.

Next, the engagement projections 85 of each lock gear 52 will be described. In the "open state" of FIG. 8, all the engagement projections 85 are engaged with the cutouts 86 at the positions of the partition plates 26. In other states, it escapes from the notch 86 and is located outside the partition plate 26. Then, in the “closed state” of FIG. 10, regarding the dial 50 in which the unlock code is broken, the engagement protrusion 85 and the notch 86 are displaced,
The movement of each lock gear 52 in the direction of the actuator 10 is prevented. Regarding the dial 50 at the angular position where the unlock code appears in the window hole 5, the positions of the engagement protrusion 85 and the notch 86 match, and the actuator 10 of the lock gear 52
Movement in the direction to is allowed.

(8) Configuration of the forced dial return mechanism 90 The forced dial return mechanism 90 of this embodiment sets the unlock code string, and then shifts from the "open state" to the "closed state". The unlock code sequence was broken, each dial 50 was rotated to a predetermined angular position, and the operation was returned to the initial code sequence in which zeros were aligned in the four window holes 5, and the unlock code sequence was further aligned. Thereafter, when shifting from the "closed state" to the "opened state", similarly, the unlocked code string in the aligned state is broken, and each dial 50 is rotated to a predetermined angular position, and the four window holes 5 are formed. Is returned to the initial code sequence in which zeros are arranged. In this embodiment, in any case, each dial 50 is forcibly rotated to an angular position where zero appears in the window hole 5 of each dial 50. However, the present invention is not limited to this. A configuration in which the assigned code appears in each window hole 5 may be employed.

In this embodiment, a drive shaft 91 is provided so as to be reciprocable and rotatable in parallel with the operating shaft 20 in order to realize the above-mentioned forced return operation of the dial. 53 are integrally formed, and on the drive shaft 91, at positions corresponding to the respective dials 50,
A drive gear 92 is provided so as to freely rotate and slide on a drive shaft 91 so as to mesh with the driven gear 53 of each dial 50. Further, a clutch mechanism 93 is interposed between the drive shaft 91 and each drive gear 92,
The drive shaft 91, the drive gear 92, the driven gear 53, and the clutch mechanism 93, the rotary mechanism 30 and the reciprocating mechanism 40 constitute a dial forcible return mechanism 90.

The drive shaft 91 has a distal end rotatably held by the shaft support 44 of the reciprocating mechanism 40 and a base end freely rotatable by a bearing 94 provided on an end wall of the box-shaped case 6. And it is supported reciprocally. Each of the drive gears 92 integrally has a boss 95 on the side of the actuator 10, and a plurality (10 in this embodiment) of the clutch mechanism 93 is provided on an end surface of the boss 95.
Cut grooves 96 are formed at regular intervals.

On the tooth surface on the outer periphery of each of the driven gears 53,
As shown in FIGS. 12 and 13, a notch 97 is formed so that when the dial 50 is at an angular position for generating an initial code sequence, the dial 50 is disengaged from the corresponding drive gear 92. FIG. 12 shows a state in which the driving gear 92 and the driven gear 53 are in mesh with each other. The rotational force of the driving gear 92 is transmitted to the driven gear 53, and the dial 50 rotates integrally. In this meshing state, the notch 97 of the driven gear 53 is out of the meshing position with the driving gear 92, and a sign other than zero appears in the window hole 5. FIG. 13 shows the driving gear 9.
2 and the driven gear 53 are disengaged, the rotational force of the drive gear 92 is not transmitted to the driven gear 53, and the dial 50 does not rotate integrally. In this state, the notch 97 of the driven gear 53 is located at a position facing the drive gear 92, and a sign of zero appears in the window 5. As described above, the tooth surface on the outer periphery of each driven gear 53 is partially cut away only at a portion that should mesh with the drive gear 92 when zero appears in the window hole 5. Therefore, when a sign other than zero appears in the window hole 5, the drive gear 92 and the driven gear 53 mesh with each other, and the rotational force is transmitted from the drive gear 92 to the driven gear 53.

The clutch mechanism 93 turns on and off the transmission of the torque of the drive shaft 91 to each dial 50 by disengaging the drive shaft 91 and each drive gear 92 by reciprocating the drive shaft 91. It is for. In this embodiment, at a position corresponding to each drive gear 92 of the drive shaft 91, a mounting groove 98 having a predetermined length is penetrated and opened, and a plurality of cutting grooves provided on each drive gear 92 in each mounting groove 98. An engaging piece 99 which engages and disengages with the insertion groove 96 is attached.

The engaging piece 99 is a molded synthetic resin having flexibility, and has fixed ends 100 and free ends 10 on both sides.
1 are connected in an N-shape by a connecting portion 102. The fixed end 100 is fixed to a groove end of the mounting groove 98 on the side of the actuator 10, and the free end 101 is engaged with the groove end on the opposite side of the mounting groove 98 in a released state. Due to this and the restoring operation, the free end 101 slides back and forth in the axial direction inside the mounting groove 98.
Both ends of the free end portion 101 protrude from the peripheral surface of the drive shaft 91, and the protruding portions at both ends are engaged with and disengaged from two cut grooves 96 at any diagonal positions of the drive gear 92.

The "open state" of FIG. 2 and the "closed state" of FIG.
Although the free end portion 101 of the engagement piece 99 is not engaged with the cut groove 96 of the drive gear 92, when the shift from the “open state” to the “closed state” in FIG. "Closed state" in FIG.
In the transition from the state to the “open state”, the free end portion 101 of the engagement piece 99 is engaged with one of the cut grooves 96 of the drive gear 92. In the “open state” and the “closed state”, the engagement pieces 99
The free end 101 of the engaging piece 99 engages with the cut groove 96 of the drive gear 92 with the movement of the drive shaft 91 when the free end 101 of the drive gear 92 faces the cut groove 96 of the drive gear 92. .
The free end 101 of the engagement piece 99 is inserted into the cut groove 9 of the drive gear 92.
6, the free end 1 of the engagement piece 99 is not positioned.
01 once abuts against the end face of the boss 95 of the drive gear 92,
When the drive shaft 91 rotates slightly, the restoring force of the connecting portion 102 in the bent state causes the free end 10
1 is engaged with the cut groove 96 of the drive gear 92.

In implementing the code lock device of the present invention, in addition to the above-described mechanism, a mechanism for intermittently operating each dial 50 to cause each code to appear and localize in the window 5 sequentially, and an unlock code sequence. A mechanism for preventing the rotation of the actuator 10 when the initial code string is aligned in order to order the rotation operation to be performed after the setting or alignment operation, and a return operation in the reverse direction during the operation of the unlocking or locking operation. Are incorporated to prevent malfunction and damage of each part of the mechanism. However, since these mechanisms are not related to the gist of the present invention, the description is omitted here. Needless to say, the dial forcible return mechanism 90, which is a feature of the present invention, is not limited to the configuration of the above-described embodiment. In particular, the clutch mechanism 93 can adopt various configurations. is there.

Next, a series of operations during the locking operation and the unlocking operation of the code lock device having the above-described configuration will be described in detail, centering on the forced dial return mechanism 90 which is a feature of the present invention. First, the operation at the time of the locking operation will be described. When the code locking device is in the “open state” shown in FIGS. 1 to 3 and FIG. 71 and the first concave portion 70 </ b> A of the outer cylinder 13, and is at the “first displacement position” where it is most displaced toward the actuator 10. In this state, each dial 50 is in a freely rotatable state in which it is disengaged from each lock gear 52, that is, a state in which the protruding row 61 of each dial 50 is disengaged from the protruding rows 64 a and 64 b of each lock gear 52. The unlock code can be set freely.

Now, the dial operation plate 51 of each dial 50
After rotating to set any unlock code sequence, take 1
When the operating shaft 10 is rotated, as shown in FIG. 4, the operating shaft 20 is displaced in the direction opposite to the actuator 10 as a result of the guide roller 28 at the tip of the operating shaft 20 riding on the outer peripheral surface of the sleeve 15, as shown in FIG. The second displacement position ". As a result, the protrusion row 61 of each dial 50 and each lock gear 52
One of the protrusion rows 64a is engaged, and the set unlock code is stored and held. In this state, the operating shaft 20 and each lock gear 52 are disconnected from each other by the protrusion 82 coming out of the protrusion engagement groove 84, and the engagement protrusion 85 of the lock gear 52 is formed by the notch 86 of the partition plate 26. I have escaped more.

On the other hand, when the actuator 10 is turned by the turning operation of the shooting 110, the reciprocating mechanism 40
The pressing roller 41 presses the movable body 42, and the shaft support 44 moves the drive shaft 91 of the dial forcible return mechanism 90.
The shift of the drive shaft 91 activates the clutch mechanism 93 to engage the drive shaft 91 with each drive gear 92.

The bevel gear 31 of the rotating mechanism 30 is moved to the actuator 10 slightly after the start of the operation of the reciprocating mechanism 40.
The rotation of the bevel gear 31 is transmitted to the bevel gear 32, and the rotation of the bevel gear 32 is transmitted to the spur gear 33. As a result, the drive shaft 91 and each drive gear 9
2 rotate integrally, and further the rotation of each drive gear 92 is transmitted to the driven gear 53 of each dial 50, whereby each dial 50 rotates and the unlock code sequence is broken. Each dial 50 up to the position where zero appears in each window hole 5
Is rotated, the notch 97 of the driven gear 53 reaches the position facing the drive gear 92, and the drive gear 92 and the driven gear 5
3 is disengaged. As a result, the rotation of the drive gear 92 is not transmitted to the driven gear 53, and the dial 50 immediately stops rotating.

When the “closed state” of FIG. 5 is reached, the disk tumbler 81 of the lock mechanism 80
And pushes the operating piece 83 toward the outer cylinder 13. On the other hand, the operating shaft 20 moves to the “third displacement position” shown in FIG. 10 when the guide roller 26 at the tip fits into the opening 71 of the sleeve 15. As a result, any of the lock gears 52
Is engaged with the peripheral edge of the circular hole 27 of the partition plate 26, and a locked state is generated. At this time, the protruding row 61 of each dial 50 and the protruding row 64b of each lock gear 52 are engaged with each other.

Next, the operation at the time of the unlocking operation will be described. When the code lock device is in the "closed state" of FIGS. 5 and 10, each dial 50 is in a state of being engaged with each lock gear 52 and each lock gear 52 is locked. Reference numeral 52 denotes a state in which the connection with the operating shaft 20 is cut off, and the set unlock code sequence can be aligned.

Now, the dial operation plate 51 of each dial 50
Is rotated to align the unlock code strings, the position of the convex engaging groove 84 of each lock gear 52 matches the position of the corresponding convex 82 on the operating shaft 20, and each lock gear 52
And the position of the notch 86 of each partition plate 26 matches.

Next, when the photographing 110 is slightly rotated, as shown in FIG.
And the opening 71 of the sleeve 15 overlaps, and the guide roller 28 at the tip of the operating shaft 20 is
5 is fitted into the first recess 70A of the outer cylinder 13 through the opening 71, and the operating shaft 20 is moved to the "first displacement position". As a result, the guide roller 28 retracts the operating piece 83 into the lock hole 19 and pushes the disc tumbler 81 out of the lock hole 19 to release the locked state.

When the shooting 110 is further rotated, FIG.
As shown in the figure, the guide roller 28 at the tip of the operating shaft 20 rides on the outer peripheral surface of the outer cylinder 13, and as a result, the operating shaft 20
Is shifted to the "third displacement position" shown in FIG. 11, and the lock gears 52 and the dials 50 are disconnected from each other, that is, the protrusions 61 are located in the sliding grooves 64.
In this state, the operating shaft 20 and each lock gear 52 are in a state in which the projection 82 is engaged with the projection engagement groove 84 and is engaged.
Reference numeral 5 denotes a state in which the engagement with the peripheral edge of the circular hole 27 of the partition plate 26 has been released.

On the other hand, when the actuator 10 is rotated by the rotation operation of the photographing 110, the pressing roller 41 of the reciprocating mechanism 40 presses the movable body 42 and the shaft support 44 is forced to return to the dial forcibly by the same manner as described above. The 90 drive shaft 91 is shifted. The shift of the drive shaft 91 activates the clutch mechanism 93 to engage the drive shaft 91 with each drive gear 92.

The bevel gear 31 of the rotating mechanism 30 is moved to the actuator 10 a little later than the start of the operation of the reciprocating mechanism 40.
The rotation of the bevel gear 31 is transmitted to the bevel gear 32, and the rotation of the bevel gear 32 is transmitted to the spur gear 33. As a result, the drive shaft 91 and each drive gear 9
2 rotate integrally, and further the rotation of each drive gear 92 is transmitted to the driven gear 53 of each dial 50, whereby each dial 50 rotates and the unlock code sequence is broken. Each dial 50 up to the position where zero appears in each window hole 5
Is rotated, the notch 97 of the driven gear 53 reaches the position facing the drive gear 92, and the drive gear 92 and the driven gear 5
3 is disengaged. As a result, the rotation of the drive gear 92 is not transmitted to the driven gear 53, and the dial 50 immediately stops rotating.

[0072]

As described above, according to the present invention, the unlocking code string is destroyed by the forced rotation of each dial by the locking operation after the setting of the unlocking code string, and the restoring operation to the predetermined initial code string is performed. By doing so, the reliability of the code lock device can be greatly improved. In addition, since the drive shaft is provided in parallel with the operation shaft and the dial forcible return mechanism is formed on the drive shaft, the load on the operation shaft can be reduced, and a smooth locking and unlocking operation can be realized. Furthermore, a notch is formed in the tooth surface of the driven gear constituting the dial forced return mechanism, so that when the dial is at an angular position that generates an initial code sequence, the driven gear and the drive gear are disengaged from each other. Each dial can be reliably returned to a predetermined initial code sequence.

[Brief description of drawings]

FIG. 1 is a plan view showing the appearance of a code lock device according to the present invention.

FIG. 2 is a partially broken plan view showing the internal structure of the code lock device.

FIG. 3 is a partially cutaway front view showing the internal structure of the code lock device.

FIG. 4 is a partially broken plan view showing the operation of the code lock device.

FIG. 5 is a partially broken plan view showing the operation of the code lock device.

FIG. 6 is a partially cutaway plan view showing the operation of the code lock device.

FIG. 7 is a partially broken plan view showing the operation of the code lock device.

FIG. 8 is a sectional view of a main part showing an internal structure of the code lock device.

FIG. 9 is a sectional view of a main part showing the operation of the code lock device.

FIG. 10 is a sectional view of a main part showing the operation of the code lock device.

FIG. 11 is a sectional view of a main part showing the operation of the code lock device.

FIG. 12 is a side view showing a meshing state between a driving gear and a driven gear.

FIG. 13 is a side view showing a meshing state between a driving gear and a driven gear.

FIG. 14 is a plan view showing a bevel gear of the rotating mechanism.

FIG. 15 is a side view of the dial.

FIG. 16 is a sectional view of a lock gear.

FIG. 17 is a side view of the lock gear.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Actuator 20 Operating shaft 30 Rotating mechanism 40 Reciprocating mechanism 50 Dial 53 Follower gear 60 Unlocking code string setting mechanism 80 Lock mechanism 90 Dial forced return mechanism 91 Drive shaft 92 Drive gear 93 Clutch mechanism 97 Notch

Claims (1)

[Claims] 1. A plurality of dials each having a plurality of codes, an operating shaft that rotatably supports each dial at a predetermined position, an actuator that responds to unlocking and locking operations, and each dial. An unlocking code string setting mechanism that can set an unlocking code string, a lock mechanism that permits the operation of the actuator when the unlocking code string is aligned, and regulates the operation of the actuator when the unlocking code string is not aligned, A dial forcible return mechanism for rotating the dial on the operating shaft to return to a predetermined initial code sequence, wherein the forcible dial return mechanism is provided with a driven gear integrally provided with each dial; A drive shaft provided to be able to reciprocate and rotate in parallel with the operation shaft; and a drive shaft provided between the actuator and the drive shaft, wherein the drive shaft is reciprocated in response to operation of the actuator. A reciprocating mechanism, a rotating mechanism provided between the actuator and the drive shaft, for rotating the drive shaft in response to the operation of the actuator, and a rotating mechanism on the drive shaft so as to mesh with a driven gear of each dial. A drive gear rotatably disposed at a position corresponding to each dial; and a drive gear provided between the drive shaft and each drive gear, for reciprocating the drive shaft and each drive gear by reciprocating the drive shaft. A notch is formed on the tooth surface of each of the driven gears so that when each dial is at an angular position for generating the initial code sequence, the gear is disengaged from the drive gear. Sign lock device.