JP2000257314A - Code lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a code lock device in which smooth dialing can be operated and there is no fear that a series of unintended unlocking codes are set. SOLUTION: This code lock device is provided with a positioning mechanism which intermittently positions dials at an angular position where dial codes appear at apertures. The positioning mechanism includes a gear 101 in which valleys 103 and crests are alternalely formed at an angular pitch corresponding to the code arrangement angle of dials, and an elastic member 102 having a ratchet plate 106 with a tapered-off shape, engaging with the valleys 103 of the gear 101 or disengaging therefrom. The ratchet plate 106 of each elastic member 102 is provided with slope faces 106b, 106c making an obtuse angle with both sides of the tip of a convexed face. Each valley 103 of each gear 101 is provided with slope faces 103b, 103c having the same inclination angle with the slope faces 106b, 106c of the ratchet plate 106 with both sides of the valley 103a of the concaved face having the same curvature with the convexed face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code lock device for use in, for example, a locker or a safe. In particular,
The present invention relates to a code lock device capable of setting an arbitrary unlock code sequence by a plurality of dials.

[0002]

2. Description of the Related Art A code lock device of this kind is mounted on, for example, a door of a locker for rent, and a latch is opened / closed by opening / closing by a forward / reverse rotation of the locking device during a shooting operation during unlocking and locking. And is disengaged from the receiving fitting provided on the main body. This code lock device has a plurality of dials arranged on the front surface of the door. By manually operating these dials, the setting of the unlock code string at the time of locking, the alignment of the unlock code string at the time of unlocking,
Each is done. An unlock code sequence set at the time of locking is stored in a storage mechanism.

FIG. 24 shows the configuration of each dial 50 in a conventional code lock device. Illustrated dial 50
The dial operating plate 51 is provided at one end of a cylindrical wall 54, and the driven gear 53 is provided integrally with the other end. On the outer peripheral surface of the cylindrical wall 54, "0" to
The symbol “9” is shown. When the dial 50 is rotated, each code appears one by one in a window hole (not shown) in the front plate.

[0004] The driven gear 53 is engaged with a driving gear 94 constituting a dial forcible return mechanism (details will be described later). A support shaft 91 that supports the drive gear 94 includes:
Gear 101 constituting positioning mechanism 100 for each dial
Is attached. The positioning mechanism 100 is a mechanism for intermittently positioning the dial 50 at an angular position where the sign appears in the window hole, and the gear 101 and the U-shaped elastic member 102
It is composed of

[0005] The gear 101 is formed by alternately forming troughs 103 and peaks 104 at an angular pitch corresponding to the code arrangement angle of the dial 50. The elastic member 102 is supported by a support substrate (not shown), and engages with the tip of a pair of opposed spring plates 105, 105 to and from the valley 103 of the gear 101 by elastic deformation of the spring plate 105. Tapered claw plates 106, 106 are formed integrally with each other.

As shown in FIG. 25, each claw plate 106 has inclined surfaces 106b and 106c having an angle θ slightly smaller than 90 degrees with respect to the tip 106a of the convex curved surface. Gear 1
01 are formed on the inclined surfaces 106b of the claw plate 106,
The valley bottom 103a is larger than the convex curved surface of the tip 106a of the claw plate 106 in order to reduce the contact area between the valley 103 and the claw plate 106. It is formed on a concave curved surface with a curvature. When the claw plate 106 engages with the valley 103 of the gear 101, a gap is formed between the tip portion 106 a of the claw plate 106 and the valley bottom 103 a of the valley 103, and the inclined surfaces 106 b and 106 c of each claw plate 106. And the inclined surface 103b, 1 of the valley 103
03c makes surface contact with each other.

At the time of locking, after a desired unlocking code string is set by manually operating each dial operating plate 51 of the plurality of dials 50 and a shooting operation is performed, the latch is engaged with the receiving bracket of the main body. In this case, the set unlock code sequence is stored in the storage mechanism. At the time of unlocking, when the unlocking code string is aligned by manually operating the dial operation plates 51 of the plurality of dials 50, the locking mechanism is unlocked. It comes off from the bracket of the main body.

When each dial 50 is turned by manually operating the dial operation plate 51, the positioning mechanism 100 is rotated.
The spring plate 105 is elastically deformed so that the claw plates 106, 106 at the diagonal positions are sequentially engaged with the valleys 103 of the gear 101, and the dial 50 is intermittent at the angular position where the sign appears in the window hole. To be localized.

[0009]

In the case of the positioning mechanism 100 having the above-described structure, the inclined surface 1 of each valley 103 of the gear 101 is not limited.
03b, 103c and the inclined surfaces 106b, 10 of the claw plate 106
6c, but the valley bottom 103a of the valley 103 does not make surface contact with the tip 106a of the claw plate 106, so that the contact area between the claw plate 106 and the valley 103 is reduced. Therefore, the dial 50 can be operated with a small force, and the dial operation can be performed smoothly. On the other hand, the inclined surface 1 of each valley 103
Since 03b and 103c form an acute angle, the claw plate 106 is unlikely to fit into the valley 103, and the dial 50 may be localized in an incompletely fitted state. As a result, at the time of locking, when setting the unlock code string, an unlock code string different from the unlock code string intended by the operator may be set,
At the time of unlocking, even if the unlocking code sequence is aligned, the lock mechanism does not become unlocked, which causes a trouble.

The present invention has been made in view of the above problem, and a smooth dial operation is possible by devising such that the fitting of the claw plate and the trough of the gear in the positioning mechanism is performed securely. It is an object of the present invention to provide a code lock device which has a possibility of setting an unintended unlock code sequence.

[0011]

According to the present invention, there are provided a plurality of dials in which a plurality of codes are arranged at equal angular positions and which can be operated externally, and each code of the dial is externally changed with the rotation of the dial. A code locking device comprising: a code display window that appears one by one so as to be visible; and a positioning mechanism for each dial that intermittently positions the dial at an angular position where the code appears in the code display window. Includes a gear in which valleys and ridges are alternately formed at an angular pitch corresponding to the code arrangement angle of the dial, and an elastic member having a tapered claw plate engaging and disengaging from the valley of the gear. The claw plate of each elastic member has an inclined surface that forms an obtuse angle with the distal end of the convex curved surface interposed therebetween. Each valley of each gear is provided with an inclined surface having the same inclination angle as the inclined surface of the claw plate with a valley bottom of a concave curved surface having the same curvature as the convex curved surface interposed therebetween.

[0012]

The convex curved surface at the tip of the claw plate and the concave curved surface at the bottom of each valley of the gear have the same curvature, and the inclined surface sandwiching the leading end of the claw plate and the valley bottom of each valley of the gear. Since the inclined surface sandwiching the groove has the same inclination angle, the claw plate and the valley are completely in surface contact, the contact area is increased, and the fitting is performed in a stable state. On the other hand, since the inclination angle of the inclined surface is set to an obtuse angle, the dial rotates with a small force, and the dial operation can be performed smoothly. Since the claw plate is easily fitted into the valley, the dial is not localized in an incompletely fitted state.

[0013]

1 and 2 show the appearance of a code lock device according to an embodiment of the present invention. FIG. 3 and FIG.
The internal structure of this code lock device is shown. This code lock device,
For example, it is attached to the door of a rental locker,
Rotates forward and backward by 90 degrees, and is disengaged from the receiving fitting 2 attached to the main body of the rental locker.

In the following description, the latch 1 is the receiving bracket 2
The closed state, the locked state of this closed state is the locked state, the unlocked state is the unlocked state, and the latch 1 comes off the receiving fitting 2. The opened state is called an “open state”. In addition, the operation from the “open state” to the “locked state” through the “closed state” is referred to as “locking operation”,
The operation from the “closed state” to the “opened state” via the “unlocked state” is referred to as “unlocking operation”. 1 to 4 show the “open state”.
2 shows the appearance and internal structure of the code lock device shown in FIG.
FIGS. 5 and 6 show the internal structure in the “closed state”.
7 to 10 show the internal structure when an operation tool described later is operated, respectively.

In the illustrated code lock device, the upper surface opening of the box-shaped case 9 is closed by the front plate 3. A circular opening 4 is provided near one end of the front plate 3, four window holes 5 are provided from the center to the other end, and a rectangular opening 6 is provided below the opening 5.
Are provided respectively. Inside the box-shaped case 9, an operation drive unit 10 is provided at the position of the circular opening 4, a sign lock mechanism is provided at the positions of the four window holes 5, and an operation tool 30 is provided at the position of the rectangular opening 6. And the operation control mechanism 40 are respectively incorporated. From the circular opening 4, the end plate 11 of the inner cylinder 12 constituting the operation drive unit 10 projects onto the front plate 3. A picture 110 for locking and unlocking operation is attached to the end plate 11. This shooting 110 is rotated in an angle range of 90 degrees. In addition, FIG. 3, FIG. 5, FIG.
9 and FIG. 9 are shown with the shooting 110 removed.

The shooting 110 is provided with a keyhole 111 for inserting a master key. The master key 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 operation drive unit 10, not only the master key but also a key for unlocking the cylinder lock is inserted into the key hole 111.

At the position of each window 5, four dials 50 used for setting an unlock code string are arranged. Each window hole 5
From above, the dial operation plate 51 of each dial 50 projects above the front plate 3. Each window hole 5 has a dial operation plate 5
1 has a long hole 7 protruding therefrom, and a rectangular hole 8 continuous with the long hole 7. From each rectangular hole 8, one code (a number from “0” to “9”) appearing on each dial 50 appears.

The push button 31 of the operation tool 30 projects from the rectangular opening 6 onto the front plate 3. This push button 31
During the locking operation, is pressed to store the set unlock code sequence and then to perform the locking operation. Further, after the unlocking operation is completed, the push button 31 breaks down the unlocking code sequence and a predetermined initial code sequence (in the illustrated example, a code sequence in which four zeros are arranged).
Also used when returning to.

The lock device of the illustrated example has a structure for locking and a structure for setting and storing an unlock code sequence.
It includes a configuration for breaking the unlock code sequence and returning to the initial code sequence. Hereinafter, the operation drive unit 10, the operation shaft 20, the four dials 50, the storage mechanism 60, the lock mechanism 80, and the operation tool 3
0, operation control mechanism 40, dial forced drive mechanism 9
0, and each configuration of the positioning mechanism 100 of each dial 50 will be sequentially described.

(1) Configuration of the Operation Driving Unit 10 The operation driving unit 10 includes an inner cylinder 12 that rotates integrally with the unlocking operation and the locking operation by the shooting 110, and an outer cylinder fitted on the outer periphery of the inner cylinder 12. 13 and an outer cylinder ring 15. Although not shown, a lock mechanism that operates by inserting a master key is incorporated in the inner cylinder 12. This locking mechanism has a plurality of disk tumblers. In a state where the master key is not inserted, a part of the disk tumbler is engaged with a groove provided on the inner peripheral surface of the outer cylinder 13, so that the inner cylinder 12 and the outer cylinder 13 are integrated. When the master key is inserted, some of the disk tumblers are actuated, and the engagement with the groove of the outer cylinder 13 is released, so that only the inner cylinder 12 can rotate independently.

An engagement groove 16 is formed in the inner hole of the outer cylinder ring 15 over a predetermined angle range smaller than 90 degrees. A drive projection 14 projecting from the outer peripheral surface of the outer cylinder 13 is engaged with the engagement groove 16. The engagement groove 16 and the drive projection 1
4 constitutes an active mechanism 41 of the operation control mechanism 40 described later. At the time of locking operation, the inner cylinder 1
When the outer cylinder 2 and the outer cylinder 13 rotate, the driving projections 14
Slides in the engagement groove 16, so that the outer cylinder ring 15 does not rotate integrally. When the drive projection 14 reaches the end of the engagement groove 16, the inner cylinder 12, the outer cylinder 13, and the outer cylinder ring 15 are integrally rotated by the remaining rotation angle range of the shooting 110.

(2) Structure of the Operating Shaft 20 The operating shaft 20 has a hemispherical tip surface 21 which abuts on the outer peripheral surface of the outer cylinder 13. A cam surface 19 having troughs 18A and 18B at both ends and a peak 18C in the middle is formed on the outer periphery of the outer cylinder 13 where the tip end surface 21 abuts. Operating shaft 2
A support shaft 22 protrudes from the base end surface of the “0”. The support shaft 22 is supported by a bearing 23 provided on a support plate 27 on the rear side. The distal end portion of the operating shaft 20 is supported by a bearing hole 24 formed in a front support plate 25. The operation shaft 20 can reciprocate in a direction orthogonal to the operation drive unit 10. A compression spring 26 is mounted on the support shaft 22, and the operating shaft 20 is constantly urged toward the operation drive unit 10 by the spring force. On the peripheral surface of the operating shaft 20, four protrusions 82 constituting the lock mechanism 80 are integrally provided at the same angular position at regular intervals.

(3) Configuration of Dials 50 Each of the four dials 50 is rotatably provided on the operating shaft 20 via a lock gear 52. As shown in FIGS. 3 and 17, each dial 50 has a dial operation plate 51 at one end of a cylindrical wall 54 and a driven gear 53 at the other end.
Are provided integrally. The driven gear 53
Constitutes a dial compulsory driving mechanism 90 described later. On the outer peripheral surface of the cylindrical wall 53, reference numerals "0" to "9" are shown for each equiangular position.

(4) Configuration of Storage Mechanism 60 The storage mechanism 60 is a mechanism for freely setting and storing an unlock code sequence, and includes a displacement mechanism for reciprocating each lock gear 52 and each dial 50. And a meshing mechanism for setting a state of engagement with each lock gear 52. Here, the unlock code sequence refers to a sequence of codes that set the code lock to the “unlocked state” when the dials are aligned, among the sequence of codes of the dials 50 appearing in the window holes 5. In the following description, the code of each dial 50 constituting the unlock code sequence may be simply referred to as “unlock code”.

The displacement mechanism is a mechanism for simultaneously reciprocating the respective lock gears 52 by operating the operation control mechanism 40 in response to the operation of the operating tool 30, and is formed on the outer peripheral surface of the outer cylinder ring 15. Concave portion 70A and convex portion 70
B, a front bush 61 slidably fitted on the distal end of the operating shaft 20, and each lock gear 52 is connected to the rear bush 6.
Compression spring 6 for urging in the direction of operation drive unit 10 via
3 is included. In the front bush 61, the opened leading edge abuts on the outer peripheral surface of the outer cylinder ring 15, and the trailing edge abuts on the leading lock gear 52. A front end surface 21 of the operating shaft 20 protrudes from a front end opening of the front bush 61.

In the "open state" shown in FIGS. 3 and 4, one of the valleys 18A of the outer cylinder 13 and the outer cylinder ring 15
The concave portion 70 </ b> A is positioned in the direction of the operating shaft 20. Each lock gear 52 and the front bush 61 are pushed by the spring force of the compression spring 63 and displaced toward the distal end of the operating shaft 20, and the distal edge of the front bush 61 fits into the recess 70 </ b> A of the outer cylinder ring 15 and abuts. . In this state, each lock gear 5
2 is the most displaced toward the operation drive unit 10. Hereinafter, this state is referred to as a “first displacement state”.

FIGS. 5 and 6 show the state when the state is shifted from the "open state" to the "closed state". In this state, the other valley portion 18B of the outer cylinder 13 and the outer cylinder ring 15
The concave portion 70 </ b> A is positioned in the direction of the operating shaft 20. Therefore, the leading edge of the front bush 61 remains fitted into the recess 70A of the outer cylinder ring 15, and each lock gear 5
Reference numeral 2 maintains the "first displacement state" which is the most displaced toward the operation drive unit 10. Even if the unlock code sequence is set in this state, the same "first displacement state" is maintained, and illustration is omitted here.

FIGS. 7 and 8 show the push button 3 of the operating tool 30.
FIGS. 9 and 10 show the initial state in which the push button 1 is pressed, and the state in which the operating tool 30 is pushed deeply. In these states, the outer ring 15
Are located in the direction of the operating shaft 20,
The front edge of the front bush 61 rides on the projection 70B. As a result, the front bush 61 and each lock gear 5
2 is pushed against the spring force of the compression spring 63 and the operating shaft 20
To the proximal end of Hereinafter, this state is referred to as a “second displacement state”.

Next, as shown in FIG. 17, the engagement mechanism includes ten recesses 64 formed on the inner peripheral surface of the cylindrical wall 54 of each dial 50, as shown in FIGS. 18 and 19. And ten protruding members 65 protruding from the outer peripheral surface of each lock gear 52. A recess 64 in each dial 50;
Since the corresponding engagement angle position of the lock gear 52 with the projection 65, that is, the fitting angle position of the dial 50 with respect to the lock gear 52, is equal to the number of codes, the unlocking code depends on the fitting angle position of both. And 10 settings are possible.

In both the "open state" of FIGS. 3 and 4 and the "closed state" of FIGS. 5 and 6, the operating shaft 20 is in the "first displacement state". The notch 64 is not engaged with the projection 65 of each lock gear 52, and the connection between each dial 50 and the lock gear 52 is cut off. Therefore, each dial 50 can be independently rotated both in the “open state” and in the “closed state”, and an arbitrary unlock code can be set.

When the operating tool 30 shown in FIGS. 7 to 10 is pushed, the operating shaft 20 is in the "second displacement state", and the recess 64 of each dial 50 engages with the projection 65 of each lock gear 52 to release the lock. A lock code string is stored.

(5) Configuration of Lock Mechanism 80 When all the codes of the dials 50 appearing in the respective window holes 5 are unlock codes (when an unlock code sequence is generated), the lock mechanism 80 is operated and driven. The operation of the part 10 is allowed,
When the code of any one of the dials 50 appearing in (1) is not an unlock code (when the unlock code string is broken), the operation driving unit 1
0 is regulated.

The lock mechanism 80 of this embodiment has four protrusions 82 projecting from the peripheral surface of the operating shaft 20 and a protrusion provided on the inner peripheral surface at one end of each lock gear 52 in the axial direction. Child engaging groove 81 and a peripheral groove 83 provided on the inner peripheral surface at the other end of each lock gear 52 and the inner peripheral surface at the rear end of the front bush 61.
And the cam surface 19 formed on the outer peripheral surface of the outer cylinder 13.

Each of the protrusions 82 of the operating shaft 20 is engaged with the lock gear 52 in the "open state" of FIGS. 3 and 4 and in the "closed state" of FIGS. The lock gear 52 is engaged in the groove 81 and regulates the rotation of each lock gear 52. At this time, since each dial 50 is disconnected from the lock gear 52, each dial 50 can be rotated to set and change the unlock code.

When the operating tool 30 is pushed, at the beginning of the pushing operation shown in FIGS. 7 and 8, each of the projections 82 of the operating shaft 20 escapes from the projection engaging groove 81 of each of the lock gears 52.
In the circumferential groove 83 of the adjacent lock gear 52 and the front bush 6
Each lock gear 52 is rotatable with respect to the operating shaft 20 because the lock gear 52 enters the one circumferential groove 83. At this time, each dial 50 is in a state of being engaged with the lock gear 52, and the unlock code is stored. 9 and 10 in which the operating tool 30 is pushed deeply, each dial 50 and each lock gear 52
Are rotated together with each other, so that each protrusion 82 and each lock gear 5
The two protrusion engaging grooves 81 are displaced, and a locked state is generated. If the user attempts to rotate the shooting 110 in the open state in this misaligned state, the displacement of the operating shaft 20 in the proximal direction is restricted by the misalignment between the projection 82 and the projection engaging groove 81, and the operation is not performed. The tip surface 21 of the shaft 20 is the valley 1 of the cam surface 19 of the outer cylinder 13.
8B, the outer cylinder 1 is integrated with the inner cylinder 12.
3 cannot rotate, and the operation of the shooting 110 is impossible.

(6) Operation Tool 30 and Operation Control Mechanism 40
As shown in FIGS. 11 and 12, the operation tool 30 has a push button 31 on the upper surface, and a first operation piece 32 having a tapered lower surface at one end of the lower surface, and a second end portion of the lower surface at the other end. , And four second operation pieces 33 are protruded from each other. First operation piece 32
Acts on the operation control mechanism 40, and the second operation piece 33 acts on the dial compulsory driving mechanism 90.

The operation control mechanism 40 includes an operation plate 42 that reciprocates in accordance with the forward / reverse rotation of the operation drive unit 10 and the vertical movement of the operation tool 30, the outer cylinder 13 and the outer cylinder ring 15 of the operation drive unit 10. And an active mechanism 41 incorporated between them. The operation plate 42 has a rack gear 44 that meshes with a pinion gear 43 formed on the outer peripheral surface of the outer cylinder ring 15 of the operation drive unit 10, and an elongated hole-shaped opening 45 formed on the plate surface. A roller 46 is rotatably supported at the center of the length of the opening 45.

In the "open state" of FIGS. 3 and 4, the roller 46 is at a position displaced from below the first operation piece 32 of the operating tool 30, so that even if the operating tool 30 is pushed down. The first operation piece 32 passes through the opening 45 and is in an idle-pressed state. In the “closed state” of FIGS. 5 and 6, since the roller 46 is located directly below the first operation piece 32 of the operation tool 30, when the operation tool 30 is pressed down,
The first operation piece 32 abuts against the roller 46 and pushes it to move the operation plate 42 as shown in FIG.

The active mechanism 41 is for activating the operation of the operation tool 30 on the operation plate 42.
A drive projection 14 protruding from an outer peripheral surface of an outer cylinder 13 of the operation drive unit 10 and an engagement groove 1 formed in an inner hole of the outer cylinder ring 15.
6, a pinion gear 43 formed on the outer peripheral surface of the outer cylinder ring 15, and a rack gear 44 provided on the operation plate 42. Outer cylinder 13 becomes inner cylinder 1 by locking operation of shooting 110
When the outer cylinder ring 15 is integrally rotated by a predetermined angle with a time delay, the operation plate 42 is moved by the engagement of the pinion gear 43 of the outer cylinder ring 15 and the rack gear 44 of the operation plate 42. Displaced by a fixed amount, the roller 46 of the operation plate 42 is located immediately below the first operation piece 32 of the operation tool 30. As a result, the subsequent operation of the operation tool 30 is activated.

When the operating tool 30 is pressed in this activated state, the first operating piece 32 is pressed by the roller 4 of the operating plate 42.
6, and the operation plate 42 is displaced. When the operation plate 42 is displaced, the rack gear 44 and the pinion gear 43
The outer cylinder ring 15 is rotated by the engagement with the outer ring 15, and the projection 70 </ b> B on the outer peripheral surface of the outer cylinder ring 15 is rotated in the direction of the operating shaft 20 to push up the front bush 61, and The operation of storing the lock code string is performed.

(8) Configuration of the Dial Compulsory Driving Mechanism 90 The dial compulsory driving mechanism 90, when the operation tool 30 is operated at the time of the locking operation, stores each unlock code string after the operation of storing the set unlock code string. By forcibly rotating 50 to a predetermined angular position, the operation is returned to the initial code sequence in which zeros are aligned in the four window holes 5, thereby breaking the alignment of the unlock code sequence. . When the operating tool 30 is operated after the unlocking operation is completed, each dial 50 is rotated to a predetermined angular position to break the unlocked code string in the aligned state, and the four window holes 5 are opened. The operation returns to the initial code string in which zeros are arranged. In this embodiment, each dial 50 is set at an angular position such that zero appears in the window 5 of each dial 50.
Is forcibly rotated, but is not limited to this.
A configuration in which another predetermined code appears in each window hole 5 may be used.

In order to realize the above-mentioned zero return operation,
As shown in FIG. 14, two support shafts 91 and 92 are provided in parallel with the operation shaft 20, and the cam plates 93 rotate at positions corresponding to the respective dials 50 on the first support shaft 91. Freely deployed. Each cam plate 93 is formed by alternately arranging convex cam surfaces 93a and concave cam surfaces 93b every 90 degrees. A drive gear 94 is formed integrally with each cam plate 93, and each drive gear 94 is engaged with the driven gear 53 of each dial 50. The driving gear 94 and the driven gear 53
The gear ratio is set to 2: 1 so that the dial 50 makes one rotation while the cam plate 93 makes a half rotation.

On the second support shaft 91, a pressing member 95 having a shape as shown in FIG.
The pressing member 95 has four pressing pieces 96, and the pressing members 95 are positioned so that each pressing piece 96 corresponds to each cam plate 93. Each pressing piece 96 presses the cam plate 93 to forcibly rotate the dial 50 to an angular position where it becomes zero. The operating tool 30 and the pressing member 9 are arranged such that the four second operating pieces 33 of the operating tool 30 correspond to the respective pressing pieces 96.
5 is set. Note that the pressing member 95 is
Each pressing piece 96 is normally urged away from the cam plate 93 by a spring (not shown).

FIG. 14 shows the state of the dial forcing drive mechanism 90 in the "open state" of FIGS. 3 and 4, that is, when zero appears in the window hole 5. FIG. In this "open state"
The concave cam surface 93 b of the cam plate 93 faces the pressing piece 96 of the pressing member 95. FIG. 15 shows a state of the dial forcing drive mechanism 90 when an unlock code string is set, for example, when “5” appears in the window hole 5. In this state, the convex cam surface 93a of the cam plate 93 is
6.

When the operation tool 30 is pushed deeply,
As shown by the dashed line in FIG. 2, the second operating piece 33 pushes and tilts the pressing piece 96 of the pressing member 95.
Abuts against the convex cam surface 93a of the cam plate 93. As a result, each cam plate 93 rotates to a position where the concave cam surface 93b faces the pressing piece 96 as shown in FIG. Since the driven gear 53 of the dial 50 meshes with the drive gear 94 of the cam plate 93, the dial 50 rotates with the rotation of the cam plate 93, and at the angular position where zero appears in the window hole 5 of the dial 50. The rotation of the dial 50 stops.
14 to 16 do not show the positioning mechanism 100 described below.

(9) Configuration of Positioning Mechanism 100 The positioning mechanism 100 is provided for each dial, and when operating each dial 50, a window is provided so that each code appears in the window hole 5 one by one. The dial 50 is positioned intermittently at the angular position where the sign appears in the hole 5. FIG.
1 includes a gear 101 mounted on the support shaft 91 integrally with the drive gear 94, and a U-shaped elastic member 102 for intermittently operating the dial 50 in connection with the gear 101. It is composed of The four elastic members 102 for each dial are supported by a support substrate 109 shown in FIG.

The gear 101 has 20 valleys 1 at an angular pitch corresponding to the angle (36 degrees) at which the 10 codes of the dial 50 are arranged (36 degrees).
03 and 20 ridges 104 are formed alternately. Of the 20 valleys 103, two specific valleys 103 at diagonal positions are set to have a greater depth than the other valleys 103 so as to engage deeply with the claw plate 106 of the elastic member 102. I have. When the claw plate 106 is engaged with the valley 103, zero appears in the window hole 5.

The elastic member 102 is formed of a synthetic resin material, and a pair of spring plates 1 opposed to both ends of the support piece 107.
05 and 105 are integrally formed, and each spring plate 10
5, a pair of engaging pieces 108, 108
05 in the opposite direction.

The four elastic members 102 of each dial are supported by engaging a pair of engagement pieces 108, 108 with engagement holes 109a to 109d formed in the support substrate 109. Each spring plate 105, 1 of each elastic member 102
At the tip of 05, tapered claw plates 106, 106 which are sequentially engaged and disengaged from the respective valleys 103 of the gear 101 by elastic deformation and restoring force of the spring plate 105 are integrally formed inward.

As shown in FIG. 22, each of the claw plates 106 has an inclined surface 106 which forms an obtuse angle with the tip 106a of the convex curved surface interposed therebetween.
b, 106c. The inclined surfaces 106b and 106c
Is set in an angle range larger than 90 degrees and smaller than 110 degrees.

Each trough 103 of the gear 101 is provided with a claw plate 1.
06 is provided with a valley bottom 103a of a concave curved surface having the same curvature as the convex curved surface of the front end portion 106a, and inclined surfaces 103b and 103c having the same inclination angles as the inclined surfaces 106b and 106c of the claw plate 106 are formed with the valley bottom 103a interposed therebetween. Consisting of When the claw plate 106 engages with the valley 103 of the gear 101, the tip portion 106a of the claw plate 106 and the valley bottom 103a of the valley 103 come into surface contact with each other. Also, the inclined surface 106b of each claw plate 106,
The surface 106c and the inclined surfaces 103b and 103c of the valley 103 are also in surface contact with each other.

The elastic member 102 is not limited to the leaf spring type as in the above embodiment, but may be a spring spring. Further, it goes without saying that the operation tool 30, the operation control mechanism 40, and the dial forcible driving mechanism 90 are not limited to those in the above-described embodiment. For example, the operating tool 30 is not limited to the push button type as in this embodiment, but may be a lever type.

Next, a series of operations at the time of the locking operation and at the time of the unlocking operation of the code locking device having the above-described configuration will be described in detail. 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.
, And each lock gear 52 is in the “first displacement state” where it is most displaced toward the operation drive unit 10. In this state, since each dial 50 is in a freely rotatable state in which the engagement with each lock gear 52 is cut off, that is, in a state in which the recessed portion 64 of each dial 50 and the projection 65 of each lock gear 52 are disengaged, The unlock code can be freely set.

In each dial 50, the convex curved surface of the distal end portion 106 a of each claw plate 106 of the elastic member 102 and the concave curved surface of the valley bottom 103 a of each valley 103 of the gear 101 have the same curvature. Inclined surface 1 sandwiching the front end portion 106a
Since 06b and 106c and the inclined surfaces 103b and 103c sandwiching the valley bottom 103a of each valley 103 of the gear 101 have the same inclination angle, the contact area between the claw plate 106 and the valley 103 is large, and the claw plate 106 and the valley 103 are large. The portion 103 is fitted in a stable state.

When the dial 50 is rotated in this state, the inclined surface 106 sandwiching the tip portion 106a of the claw plate 106 is formed.
Since the angles of b and 106c are set to be obtuse, the operation of the dial 50 can be performed smoothly with a small force.
Further, when the claw plate 106 gets over the crest 104 of the gear 101, the claw plate 106 is easily fitted into the valley 103, and the dial 50 is not localized in an incompletely fitted state.

Now, the dial operation plate 5 of each dial 50
After setting the unlock code string to an arbitrary unlock code string by rotating the shooting 110, the shooting 110 is rotated to the “closed state” position in FIG.
First, the inner cylinder 12 and the outer cylinder 13 rotate integrally, and after the outer cylinder ring 15 rotates by a predetermined angle, the outer cylinder ring 15 delays and rotates integrally by the remaining predetermined angle. The operation plate 42 of the operation control mechanism 40 is displaced by a predetermined amount by the rotation of the outer cylinder ring 15, and the roller 46 of the operation plate 42 is located directly below the first operation piece 32 of the operation tool 30. As a result, thereafter, the operation of the operation tool 30 on the storage mechanism 60 is activated. In addition,
As described above, the locking operation may be performed by rotating the shooting 110 after the operation of setting the unlock code string, or by rotating the shooting 110 first and then unlocking the shooting code. A column setting operation may be performed.

Next, when the push button 31 of the operating tool 30 is pressed,
The first operation piece 32 pushes the roller 46 of the operation plate 42 to displace the operation plate 42. This displacement causes the outer ring 15
Rotate, and the convex portion 70B of the outer cylinder ring 15 pushes the front bush 61, so that each lock gear 52 shifts to the “second displacement state” in which the lock gear 52 is displaced toward the base end side of the operating shaft 20 (FIG. 7 and FIG. 7). (FIG. 8). In this state, each dial 50 is engaged with each lock gear 52, that is, the recess 64 of each dial 50 is engaged with the projection 65 of each lock gear 52, and the set unlock code string is It is stored. Further, in this state, the operating shaft 20 and each of the lock gears 52 are disconnected from each other by the protrusion 82 coming out of the protrusion engaging groove 81.

Further, when the push button 31 of the operating tool 30 is pressed deeply, the four second operating pieces 33 press the respective pressing pieces 96 of the pressing member 95, and the respective pressing pieces 96 push the respective cam plates 93 into a concave shape. The cam surface 93b is rotated to a position facing the pressing piece 96. The dial 50 is rotated in accordance with the rotation of the cam plate 93, and the rotation of each dial 50 is stopped at an angular position where zero appears in the window 5 of each dial 50. In this state,
Each of the protrusions 82 and the protrusion engaging groove 81 of each of the lock gears 52 are displaced from each other, and are in a locked state. Also at this time, since the angles of the inclined surfaces 106b and 106c sandwiching the tip 106a of the claw plate 106 are set to be obtuse, the claw plate 106 and the valley 103 of the gear 106 are easily disengaged. The push button operation can be performed with a small pressing force.

Next, the operation during the unlocking operation will be described.
When the code lock device is in the locked state, each dial 50 is in a state of being engaged with each of the lock gears 52, and each of the lock gears 52 is in a state of being disengaged with the operating shaft 20, and the set unlock code sequence is aligned. It is possible to do.

When the dial operation plate 51 of each dial 50 is rotated to align the unlock code strings, each lock gear 5
The position of the second protrusion engaging groove 84 and the position of the corresponding protrusion 82 on the operating shaft 20 match, and an unlocked state is generated. Next, when the photographing 110 is rotated, first, the inner cylinder 12 and the outer cylinder 13 are integrally rotated, and later, the outer cylinder ring 15 is integrally rotated, and the “open state” shown in FIGS. 3 and 4. Return to. In this “open state”, when the operating tool 30 is pressed, the dials 50 can be returned to zero by the action of the dial forcing drive mechanism 90 with a small pressing force.

[0061]

As described above, the present invention provides a gear in which valleys and ridges are alternately formed at an angular pitch according to the dial arrangement angle, and a tapered claw engaging and disengaging from the valley of the gear. An elastic member having a plate constitutes a positioning mechanism for each dial, and the claw plate of each elastic member has an inclined surface that forms an obtuse angle with respect to the tip of the convex curved surface, and each valley of each gear has Since the inclined surface having the same inclination angle as the inclined surface of the claw plate is formed across the valley bottom of the concave curved surface having the same curvature as the convex curved surface, smooth dial operation can be performed with a small force, and moreover, incomplete. Since the dial is not localized in the fitted state, there is no possibility that an unintended unlock code string is set.

[Brief description of the drawings]

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

FIG. 2 is a side view showing the appearance of the code lock device according to the present invention.

FIG. 3 is a horizontal cross-sectional view showing an internal structure of the code lock device in an “open state”.

FIG. 4 is a vertical sectional view showing an internal structure of the code lock device in an “open state”.

FIG. 5 is a horizontal sectional view showing the internal structure of the code lock device in a “closed state”.

FIG. 6 is a vertical sectional view showing the internal structure of the code lock device in a “closed state”.

FIG. 7 is a horizontal sectional view when an operating tool showing the internal structure of the code lock device is operated.

FIG. 8 is a vertical cross-sectional view when operating the operating tool showing the internal structure of the code lock device.

FIG. 9 is a horizontal sectional view when the operating tool showing the internal structure of the code lock device is operated deeply.

FIG. 10 is a vertical sectional view when the operating tool showing the internal structure of the code lock device is operated deeply.

FIG. 11 is a sectional view showing a configuration of an operating tool and an operation plate.

FIG. 12 is a plan view showing a configuration of an operation tool and an operation plate.

FIG. 13 is a sectional view showing the operation of the operation tool and the operation plate.

FIG. 14 is a side view showing a configuration of a dial forced driving mechanism.

FIG. 15 is a side view showing the operation of the dial forced driving mechanism.

FIG. 16 is a side view showing the operation of the dial forcing drive mechanism.

FIG. 17 is a side view of the dial.

FIG. 18 is a side view of the lock gear.

FIG. 19 is a sectional view of a lock gear.

FIG. 20 is a plan view illustrating a configuration of a pressing member.

FIG. 21 is a side view showing a configuration of a positioning mechanism.

FIG. 22 is an explanatory diagram showing a fitting state between a trough of a gear and a claw plate.

FIG. 23 is a plan view showing a supporting substrate.

FIG. 24 is a side view showing a configuration of a conventional positioning mechanism.

FIG. 25 is an explanatory diagram showing a fitted state of the trough of the gear and the claw plate.

[Explanation of symbols]

 5 Window Hole 50 Dial 100 Positioning Mechanism 101 Gear 102 Elastic Member 103 Valley 103a Valley Bottom 103b, 103c Inclined Surface 104 Crest 106 Claw Plate 106a Tip 106b, 106c Inclined Surface

Claims (1)

[Claims] An externally operable dial in which a plurality of codes are arranged at equal angular positions, and each code of the dial appears one by one so as to be visible from the outside as the dial is rotated. In a sign lock device having a window and a positioning mechanism for each dial that intermittently positions the dial at an angular position where a code appears in the window, the positioning mechanism for each dial has an angular pitch corresponding to the dial code arrangement angle of the dial. And a resilient member having a tapered claw plate engaged and disengaged from the trough of the gear, and the claw plate of each elastic member has a convex curved surface. The valley of each gear has an inclined surface having the same inclination angle as the inclined surface of the claw plate with the valley bottom of the concave curved surface having the same curvature as the convex curved surface interposed therebetween. Sign locking device provided.