JP2008190214A - Code lock device - Google Patents

Abstract

A code lock device capable of changing between a fixed code type and a free code type is provided. The code lock device includes a plurality of dials 4 and an operation shaft 3 reciprocally movable in an axial direction. The actuator 2, the reciprocating mechanism 6 that reciprocates the operating shaft 3 in response to the rotation of the cylindrical body 21 of the actuator 2, and the dial 4 that is provided on the operating shaft 3 and engaged with each dial 4. And a switching mechanism 8 for switching between the free code type and the fixed code type. The switching mechanism 8 includes a rotatable switching shaft 80, a drive cylinder 82 provided with a pressing member 87 that rotates eccentrically according to the rotation of the switching shaft 80, and the compression spring 36. The displacement along the axial direction of the operating shaft 3 according to the rotation is transmitted to the operating shaft 3 via the front bush 30 to set the operating shaft 3 in a state of being displaced in the forward movement direction or the backward movement direction.
[Selection] Figure 26

Description

  The present invention relates to a code lock device used for various lockers, cabinets, etc., and in particular, the present invention cancels the storage of the unlock code string for each unlocking operation, and the user releases the unlock code string each time, Select a free code type that can be set freely, and a fixed code type that retains the storage of the unlocked code string even if there is an unlocking operation and sets the unlocked code string fixedly The present invention relates to a code lock device that can be set and switched.

As a conventional code lock device, there is a free code type device in which a user can freely set an unlock code string when used (see, for example, Patent Document 1).
Here, the “unlocking code string” refers to a sequence of codes of each dial for unlocking the code lock device. For example, when the code lock device has four dials and the dial code is composed of numbers “0” to “9”, the unlock code string is a four-digit number. In the following description, the dial codes constituting the unlock code string are simply referred to as unlock codes.

This type of code lock device is interlocked with the shooting operation by locking the lock after the user sets and aligns the desired unlocked code string by dialing and then aligns it. The latch piece is engaged with the receiving metal fitting on the door side. After that, when the unlocking code string is appropriately broken by a dial operation, a locked state is obtained.
When unlocking, the unlock code strings set by dialing are aligned, and then the photographing or the key is grasped and rotated in the opposite direction. As a result, the latch piece comes off from the receiving metal fitting on the door side, and the door such as the locker can be opened.

  The above-mentioned free code type is used for applications where the user always changes, that is, for use by unspecified persons. On the other hand, some conventional code lock devices have a fixed code type in which an unlock code string is fixedly set for each device. For fixed code types, the unlock code string is set and stored in advance, and the user cannot change the unlock code string freely, so it is not suitable for applications where the user always changes. Used for human use.

JP 9-317271 A

  However, the code lock device that allows the above-mentioned free code type and fixed code type to be properly used by switching operation has not been commercialized so far, so manufacturers are preparing for ordering from users. There is a problem that the free code type and the fixed code type need to be separately manufactured and stocked, and inventory management becomes complicated. Moreover, in order to make the locker etc. in which the code lock device is incorporated correspond to the application, it is necessary to replace the code lock device once incorporated with another type, which is troublesome.

  The present invention has been made paying attention to the above-described problems, and can be changed between a free code type and a fixed code type with one device, and has a simple structure and a small lock as a whole. An object is to provide a code lock device.

  The code lock device according to the present invention includes a plurality of dials each having a plurality of symbols represented on a peripheral surface, an operation shaft reciprocally movable in an axial direction that rotatably supports each dial at a predetermined position, An actuator having a cylindrical body that rotates in response to a locking operation and a locking operation, and an operating shaft that is provided between the cylindrical body and the operating shaft and reciprocates the operating shaft in response to forward and reverse rotation of the cylindrical body. A reciprocating mechanism to be moved and a lock gear provided corresponding to the position of each dial on the operating shaft, and by disengaging all the lock gears to each dial by the forward movement of the operating shaft responding to the locking operation. A temporary storage mechanism for storing the lock code string and releasing the lock code string by releasing the engagement of all the lock gears and the dials by the backward movement of the operating shaft in response to the unlocking operation; The code is aligned to form the unlocked code string And a lock mechanism that restricts the operation of the actuator when it is not in an aligned state, and the temporary storage mechanism that releases the storage of the unlock code string for each unlocking operation. 1 storage method, and storing the unlocked code string without releasing the engagement between all the lock gears and each dial by holding the operating shaft displaced in the forward movement direction for the unlocking operation. A switching mechanism for switching between the second storage system to be held is further provided. The switching mechanism moves the operating shaft in response to an operation for setting the second storage method by a switching knob provided between the switching knob and the operating shaft provided between the switching knob and the operating shaft. And a drive mechanism for setting the operating shaft to a state in which the operating shaft is returned to the backward movement direction in response to an operation of setting the first storage method by the switching knob.

  In the code lock device having the above-described configuration, in the first storage method, each lock is turned to set an unlock code string when locking. In the unlocked state, the lock gears and the dials are not engaged with each other, so that the dials are independently rotated, and the user can perform an operation for setting an arbitrary unlock code string. When the unlocking code string is set and then the locking operation is performed, the cylindrical body of the actuator responds and rotates, and in conjunction with this, the operating shaft is displaced in the forward movement direction. The mesh and unlock code string are stored.

When unlocking, turn each dial to align the unlock code string. In the locked state, each lock gear and each dial are engaged with each other, so that each dial rotates together with the lock gear. When the dial codes are aligned with the unlock code string, the operation of the actuator is allowed, but if not, the operation of the actuator is restricted.
When the unlocking operation is performed after aligning the unlock code strings, the cylinder of the actuator responds and rotates, and the operating shaft is displaced in the return direction in conjunction with this, so that each lock gear and each dial And the unlocked code string is released from storage.

  In order to change to the second storage method, the switching knob is operated to cause the drive mechanism to respond and forcibly displace the operating shaft in the forward direction. When the operating shaft is displaced in the forward movement direction, each lock gear is engaged with each dial and engaged, and the unlock code string is stored. In this second storage system, the operation shaft is kept displaced in the forward movement direction, that is, the state where each dial and each lock gear are engaged with each other, so that even if there is an unlocking operation, the unlock code Column memory is preserved.

  Next, when changing from the second storage system to the first storage system using the switching knob, the drive mechanism returns the operating shaft to the backward movement direction in response to an operation by the switching knob. When the operating shaft is displaced in the backward movement direction, the lock gears are separated from the dials and disengaged from the dials, so that the first storage system in which the storage of the unlock code string is released is switched.

In a preferred embodiment of the present invention, the switching mechanism has a rotatable switching shaft whose one end is a switching knob capable of rotating operation, and a cam shaft that rotates eccentrically. A drive mechanism for obtaining a displacement along the axial direction of the operating shaft in response to the eccentric rotation of the cam shaft, and an axis of the operating shaft provided on the operating shaft and obtained by the driving mechanism And a bush for transmitting displacement along the direction to the operating shaft.
According to this embodiment, the cam shaft is eccentrically rotated in response to the rotation operation of the switching shaft, and the displacement along the axial direction of the operating shaft according to this eccentric rotation is transmitted to the operating shaft via the bush, Force the shaft to reciprocate.

In a preferred embodiment of the present invention, the reciprocating mechanism operates such that the concave-convex cam surface formed on the outer peripheral surface of the cylindrical body and one end of the operating shaft abut against the concave-convex cam surface of the cylindrical body. And a spring member that presses the shaft.
According to this embodiment, when one end of the operating shaft is fitted into the concave surface of the concave-convex cam surface of the cylindrical body, the operating shaft is displaced in the backward direction by the biasing force of the spring member, so that each lock gear and each dial A state of disengagement is formed. On the other hand, when one end of the operating shaft rides on the convex surface of the concave-convex cam surface of the cylindrical body, the operating shaft is displaced in the forward direction opposite to the above against the biasing force of the spring member, so that each lock gear is A state of being engaged with each dial is formed.

  According to the present invention, since it is configured to be able to switch between a free code type in which the unlock code string can be freely set and a fixed code type in which the unlock code string is fixedly set, the use or non-use of a specific person can be avoided. It can be used according to the purpose, such as use by a specific person, and the convenience is greatly improved. Further, since it is not necessary to separately manufacture and stock both types of code lock devices, inventory management is easy. Furthermore, since it is possible to switch between the free code type and the fixed code type by an operation using the switching knob, there is no possibility of causing a complicated structure and an increase in size.

  1 and 2 show the appearance of a code lock device according to an embodiment of the present invention. For example, the code lock device is attached to a door such as a rental locker. When locking and unlocking, the latching piece 1 shown in FIG. 1 rotates forward and backward within an angle range of 90 degrees, and is engaged with and disengaged from the receiving metal fitting 10 attached to the rocker body.

  In the following description, the state in which the latching piece 1 is engaged with the metal fitting 10 is referred to as “closed state”, the state in which this “closed state” is locked and held is “locked state”, and the state in which the lock is released The “unlocked state” and the state where the latching piece 1 is detached from the metal fitting 10 are referred to as “open state”. A manual operation from the “open state” to the “locked state” is referred to as “locking operation”, and a manual operation from the “closed state” to the “unlocked state” to “open state” is referred to as “unlock operation”.

  The code lock device of the illustrated example cancels the storage of the unlock code string for each unlocking operation, and allows the unlock code string to be freely set each time (first storage method (hereinafter, "Free code type") and a second storage system (hereinafter referred to as "fixed code type") that retains the memory of the unlocked code string even when there is an unlocking operation and fixes the unlocked code string. Can be switched.

In FIG. 1, reference numeral 11 denotes a front plate that closes the upper surface opening of the box-shaped case 12, a circular opening 13 near one end of the plate surface, and four window holes 14 from the center to the other end. Each is provided.
At the position of the opening 13 is an actuator 2 that responds to each operation of locking and unlocking by the photographing 20, and at the positions of the four window holes 14 are dial mechanisms for aligning the unlocking code strings. It has been incorporated. The photograph 20 projects from the opening 13 onto the front plate 11. In each window hole 14, dial operation surfaces 42 of the four dials 4 protrude on the front plate 11. On the dial operation surface 42, ten symbols 43 “0” to “9” are represented.

  In FIG. 2, reference numeral 80 denotes a switching shaft constituting the switching mechanism 8 for switching between a free code type and a fixed code type. One end of the switching shaft 80 constitutes a switching knob 88 that can be rotated, and this switching knob 88 is exposed from a small hole 18 provided on the back surface of the box-shaped case 12. An operation groove 81 is provided on the end face of the switching knob 88, and switching is performed in the above-described manner by inserting a screwdriver into the operation groove 81 and rotating forward and backward.

  3 to 16 show the internal structure of the box-shaped case 12 together with the movements of the constituent parts during the locking and unlocking operations. In the illustrated example of the code lock device, in order to be able to store the lock / unlock and the unlock code string, the actuator 2, the operating shaft 3, the four dials 4, the four lock gears 5, the unlock code string It includes main components such as a temporary storage mechanism 6, a reciprocating mechanism 7, a lock mechanism 9, and the like, and a switching mechanism 8 for enabling switching between the above-described free code type and fixed code type. As an additional configuration, an intermittent dial feeding mechanism 19 and the like are also provided.

3 to 16, FIGS. 3, 5, 7, 9, 11, 13, and 15 are cross-sectional views seen from the front plate 11 side showing the configuration of the code lock device, and FIGS. , 10, 12, 14, and 16 are cross-sectional views seen from the a direction of FIGS. 3, 5, 7, 9, 11, 13, and 15, respectively.
3 to 10 show the configuration in the “free code type” in which the unlock code string can be freely set, and FIGS. 11 to 16 show the “fixed code in which the unlock code string is fixedly set. Each type configuration is shown.

(1) Configuration of Actuator 2 The actuator 2 responds to an unlocking operation and a locking operation, and a cylindrical body 21 is rotatably supported in one space A partitioned by a support plate 15. The photographing body 20 is attached to the upper end of the tubular body 21. When the photographing body 20 is photographed and rotated in either the forward or reverse direction, the tubular body 21 rotates integrally.

In this embodiment, an inner cylinder 21a and an outer cylinder 21b constitute a cylindrical body 21, and a cylinder lock mechanism composed of a plurality of disc tumblers is incorporated between the inner cylinder 21a and the outer cylinder 21b. Yes. The disc tumbler is for restricting the rotation of the inner cylinder 21a with respect to the outer cylinder 21b. When the master key is not inserted into the inner cylinder 21a from the key hole 29 provided in the photographing 20, the disc tumbler Is interposed between the inner cylinder 21a and the outer cylinder 21b, and the inner cylinder 21a and the outer cylinder 21b are engaged. In a state where the master key is inserted, all the disk tumblers are retracted into the inner cylinder 21a, whereby the inner cylinder 21a and the outer cylinder 21b are disengaged, and the inner cylinder 21a can be rotated in the outer cylinder 21b. It becomes a state.
According to this embodiment, when the unlock code string is forgotten, if the master key is inserted into the inner cylinder 21a, the inner cylinder 21a and the outer cylinder 21b are disconnected, and only the inner cylinder 21a is rotated. It can be operated, and unlocking operation becomes possible by this.
In addition, the cylinder lock of such a structure is already well-known, and detailed description about a lock mechanism is abbreviate | omitted here.

The retaining piece 1 is attached to an inner cylinder 21 a constituting the cylindrical body 21 via an attachment shaft 22. When the cylindrical body 21 is rotated by the operation of the photographing 20, the latching piece 1 is rotated forward and backward integrally with the cylindrical body 21 by an angle range of 90 degrees.
On the outer peripheral surface of the outer cylinder 21 b constituting the cylindrical body 21, a concave surface 23 facing the direction of the operating shaft 3 when the cylindrical body 21 is in the “open state” angular position, and the cylindrical body 21 is “open”. There are provided two engaging portions 25 and 26 that face the direction of a restricting piece 92 of the lock plate 90 described later when in the "state" or "closed state" angular position. The concave surface 23 is formed in such a size that a later-described front bush 30 attached to the tip of the operating shaft 3 can be fitted together, and constitutes a concave-convex cam surface having the outer peripheral surface of the outer cylinder 21b as the convex surface 24. The uneven cam surface constitutes a reciprocating mechanism 7 described later, and the engaging portions 25 and 26 constitute a lock mechanism 9 described later.

(2) Configuration of Actuation Shaft 3 The actuation shaft 3 is provided horizontally in a direction orthogonal to the actuator 2, and a front bush 30 is fitted to the tip of the actuation shaft 3. The front bush 30 is supported by a bearing hole (not shown) formed in the support plate 15, and the base end portion of the operating shaft 3 is supported by the bearing 16. The operating shaft 3 can reciprocate in a horizontal direction perpendicular to the actuator 2.
Five ring-shaped partition plates 31 to 35 are integrally mounted on the shaft circumferential surface of the operating shaft 3 at regular intervals, and an intermediate bush 54 made of synthetic resin is fitted between adjacent partition plates. ing. A compression spring 36 is provided between the partition plate 35 near the base end portion of the operating shaft 3 and the bearing 16, and the operating shaft 3 is always biased toward the actuator 2 by the spring pressure. The compression spring 36 constitutes a reciprocating mechanism 7 described later.

As shown in FIGS. 17 and 18, the front bush 30 is a cylindrical member made of synthetic resin with a rear surface open. A partition plate 31 integral with the operating shaft 3 is formed on the rear surface of the front bush 30. A concave groove 37 having a shape and size suitable for the outer shape is formed. The front bush 30 has a support hole 38 penetrating in the length direction, and the tip of the operating shaft 3 is fitted in the support hole 38.
In the figure, reference numeral 39 denotes a contact surface that is pressed by the pressing member 87 that constitutes the switching mechanism 8, and the details will be described later, but the pressing member 87 presses the contact surface 39 to push the front bush 30 against the actuator 2. Force move in the opposite direction.

(3) Configuration of Dial 4 and Lock Gear 5 Each of the four dials 4 is rotatably supported at a predetermined equidistant position on the operating shaft 3 via the lock gear 5. As shown in FIGS. 19 to 21, each dial 4 is represented by a reference numeral 43 of “0” to “9” for each equiangular position of the outer peripheral surface of the dial body 40, thereby forming a dial operation surface 42. . A boss portion 44 constituting the intermittent dial feeding mechanism 19 is integrally provided on the side surface of the dial body 40.

A number (ten) of valleys 45 corresponding to the number of codes are formed on the outer peripheral edge of the boss portion 44, together with the U-shaped spring member 17 provided corresponding to the boss portion 44 of each dial 4. An intermittent dial feeding mechanism 19 is configured. The intermittent dial feeding mechanism 19 intermittently feeds the dial 4 by the arrangement angle of the code in response to the rotation operation of each dial 4 to sequentially localize the codes “0” to “9” to the window holes 14 of the front plate 11. It is something to be made.
Each spring member 17 has a proximal end fixed at an appropriate position, and a pair of pressing portions 17A and 17B are formed at the distal end. The pressing portions 17A and 17B are respectively pressed against the outer peripheral edge of the boss portion 44, and the free rotation of the dial 4 is restricted. When the dial 4 is turned by manually operating the dial operation surface 42 of the dial 4, the pressing portions 17 </ b> A and 17 </ b> B of the spring member 17 are sequentially engaged with the valley portions 45 of the boss portion 44, whereby the dial 4 is predetermined. , And the signs “0” to “9” appear sequentially in the window holes 14 of the front plate 11.

  The lock gears 5 are in contact with adjacent lock gears 5 at the inner positions of the partition plates 31 to 35 on the operating shaft 3 and are rotatably supported via the intermediate bushes 54. On the inner peripheral surface of the dial main body 40 of each dial 4, a groove row 41 is formed in which a number (10) of fitting grooves 46 corresponding to the number of codes are arranged at equal angular intervals (FIG. 19). ). On the other hand, on the outer peripheral surface of the front end portion of each lock gear 5, the number of fitting protrusions 51 that can be fitted into the fitting grooves 46 of the dial 4 is arranged around the number of equal numbers (10) at equal angular intervals. A protrusion row 50 is formed (FIGS. 22 to 25).

  When the lock gear 5 moves toward the dial 4 and each fitting protrusion 51 of the lock gear 5 and each fitting groove 46 of the dial 4 are engaged with each other, the dial 4 and the lock gear 5 are coupled to rotate integrally. It becomes possible. On the other hand, when the lock gear 5 is separated from the dial 4 and the engagement protrusions 51 of the lock gear 5 and the engagement grooves 46 of the dial 4 are disengaged, the dial 4 is disengaged from the lock gear 5. It becomes possible to turn alone.

  Further, a recess 52 is formed on the outer peripheral surface of the rear end portion of each lock gear 5 (FIGS. 23 and 25), and this recess 52 constitutes a lock mechanism 8 described later. The recess 52 is formed in such a size that a leading end 91a of a detection piece 91 constituting a lock mechanism 9 described later is fitted, and each lock gear 5 is in a state in which the lock gear 5 is disengaged from the dial 4 ( In a state in which the unlocking code string can be set, the recess 52 is always localized at the same rotation angle position.

(4) Configuration of Unlocking Code String Temporary Storage Mechanism 6 The unlocking code string temporary storage mechanism 6 is a mechanism for freely setting and storing the unlocking code string. The temporary storage mechanism 6 temporarily stores an unlocked code string by meshing each dial 4 and each lock gear 5 at any one of the fitting angle positions via the meshing portion described above.
The engagement angle position of the dial 4 with respect to the lock gear 5, that is, the engagement angle position between the protrusion row 50 of the lock gear 5 and the groove row 41 of the dial body 40 exists as many as the number of codes. Ten unlock codes can be stored according to the meshing angle position.

  The unlocking code string temporary storage mechanism 6 in this embodiment is formed on the groove array 41 formed on the inner peripheral surface of the dial body 40 of each dial 4 and on the outer peripheral surface of the front end portion of each lock gear 5. The state in which the protrusion row 50 and the unlocking code row can be set, that is, the state where the engagement between the lock gear 5 and the dial 4 is disconnected, and the state where the unlocking code row is stored, ie, the lock gear 5 and the dial And a reciprocating mechanism 7 for forming a state in which 4 is engaged.

  The reciprocating mechanism 7 is a mechanism that reciprocally moves all the lock gears 5 at the same time by reciprocating the operating shaft 3 by a predetermined displacement amount at a predetermined timing in response to the operation of the actuator 2. The concavo-convex cam surface formed on the outer peripheral surface of the outer cylinder 21 b of the cylindrical body 21, the front bush 30 fitted to the distal end portion of the operating shaft 3, and a compression spring that biases the operating shaft 3 toward the actuator 2. 36. The front bush 30 is in contact with the outer peripheral surface of the outer cylinder 21 b of the cylindrical body 21 by the urging force of the compression spring 36, and the rear end thereof is in contact with the leading lock gear 5. Each lock gear 5 is arranged at an inner position of each partition plate 31 to 35 of the operation shaft 3, and a ring groove 53 (FIG. 23, FIG. 24) formed on the rear end surface of each lock gear 5 has the operation shaft 3. Each of the partition plates 32 to 35 is fitted.

  In the “open state” of the “free code type” shown in FIGS. 3 and 4, the concave surface 23 of the outer cylinder 21 b is positioned corresponding to the direction of the operating shaft 3. The operating shaft 3 is pushed by the spring force of the compression spring 36, and the front end of the front bush 30 is fitted into the concave surface 23 of the outer cylinder 21b. In this fitted state, the operating shaft 3 is displaced toward the actuator 2 side. When the operating shaft 3 is displaced toward the actuator 2, the lock gears 5 are simultaneously displaced toward the actuator 2 when the rear ends thereof are pushed by the partition plates 32 to 35 of the operating shaft 3.

  FIG. 5 and FIG. 6 show a state when the “free code type” transitions from the “open state” to the “closed state”. In this state, the front end portion of the front bush 30 rides on the convex surface 24 of the outer peripheral surface of the outer cylinder 21b. In this state, the operating shaft 3 is pushed against the spring force of the compression spring 36 via the front bush 30 and is displaced in the opposite direction with respect to the actuator 2. In addition, the leading lock gear 5 is pushed by the rear end portion of the front bush 30, and the other lock gears 5 connected thereto are also pushed, so that all the lock gears 5 are simultaneously displaced in the opposite direction with respect to the actuator 2. .

  When the “free code type” shown in FIGS. 7 and 8 is in the “closed state”, the front bush 30 remains on the convex surface 24 of the outer cylinder 21b, and each lock gear 5 is an actuator. 2 is kept displaced in the opposite direction.

Next, the operation for setting and temporarily storing the unlock code string will be described.
In the “open state” of the “free code type” (shown in FIGS. 3 and 4), each lock gear 5 is in a state of being displaced toward the actuator 2 side. The engagement protrusions 51 of the lock gears 5 are not engaged with each other, and the engagement between the dials 4 and the lock gears 5 is cut off. Thereby, each dial 4 at the time of "open state" is in the state which can be rotated independently, and can set arbitrary unlocking codes.

When the camera 20 is turned to shift from the “open state” to the “closed state” (shown in FIGS. 5 and 6), each lock gear 5 is in a state of being displaced to the opposite side of the actuator 2, and each dial Since the four fitting grooves 46 and the fitting protrusions 51 of the respective lock gears 5 are engaged with each other and engaged with each other, the set unlocking code string is stored.
Also in the “closed state” (shown in FIGS. 7 and 8), each lock gear 5 is held in a state of being displaced to the opposite side of the actuator 2, and the fitting groove 46 of each dial 4 is formed in each lock gear 5. The state where it is engaged with the fitting protrusion 51 and the unlock code string is stored is maintained.

  Next, after turning each dial 4 to align the code of each dial 4 with the unlock code string, when the unlocking operation is performed, the cylindrical body 21 rotates and the concave surface 23 on the outer peripheral surface of the outer cylinder 21b becomes. It corresponds to the direction of the operating shaft 3. As a result, the front end portion of the front bush 30 is fitted into the concave surface 23 of the outer cylinder 21 b, and the operating shaft 3 is pushed by the spring force of the compression spring 36 and displaced toward the actuator 2, causing the lock gear 5 and each dial 4 to move. The mesh is released and the unlocked code string is released from storage.

(5) Configuration of switching mechanism 8 The switching mechanism 8 has a “free code type” in which the storage of the unlocking code string is released for each unlocking operation described above, and the storage of the unlocking code string even if there is an unlocking operation. This is for switching to the “fixed code type” in which is held.
As a configuration for realizing such a switching operation, in this embodiment, as shown in FIG. 26, a rotatable switching shaft 80 operated manually, the front bush 30 and the operating shaft 3 are provided. And a drive cylinder 82 for reciprocating displacement.
One end of the switching shaft 80 constitutes a switching knob 88 that can be rotated, and a driving cylinder 82 is placed on the other end of the switching shaft 80, and the switching shaft 80 and the driving cylinder 82 are connected to each other. A coil spring 83 is provided between them.

  The coil spring 83 is a compression spring that is smaller than the inner diameter of the drive cylinder 82. The coil spring 83 urges the switching shaft 80 in a direction away from the drive cylinder 82, and is configured to be able to push the switching shaft 80 toward the drive cylinder 82 against the urging force of the coil spring 83. Has been.

As shown in FIGS. 27 to 29, the switching knob 88 is configured such that an operation groove 81 is provided on the end surface 80 </ b> A of the switching shaft 80, and the operation groove 81 is the back surface of the box-shaped case 12 by the biasing force of the coil spring 83. It is exposed from a small hole 18 (shown in FIG. 2) provided in the. By inserting a driver or the like into the operation groove 81 and pushing the switching knob 88, the switching shaft 80 can be rotated 180 degrees in the forward and reverse directions.
In the figure, 84 is a protrusion for preventing rotation, and in normal times, this protrusion 84 is associated with engaging recesses 18A and 18B (shown in FIG. 2) provided at the opening edge of the small hole 18. By combining, rotation of the switching shaft 80 is prevented.
The switching shaft 80 has a configuration in which a pair of convex walls 85A and 85B protrude from an end face 80B on the opposite side of the switching knob 88, and the coil spring 83 is fitted between the convex walls 85A and 85B.

  As shown in FIGS. 30 to 32, the drive cylinder 82 has a cylindrical outer shape, has a bottom surface 82 </ b> A that faces the switching shaft 80, and has a shape that matches the outer shape of the convex walls 85 </ b> A and 85 </ b> B of the switching shaft 80. The convex wall insertion grooves 86, 86 are formed over substantially the entire length. When the convex walls 85A and 85B are engaged with the convex wall insertion grooves 86 and 86, the switching shaft 80 and the drive cylinder 82 are coupled to each other, thereby enabling integral rotation.

  A columnar pressing member 87 that protrudes eccentrically in response to forward and reverse rotation of the drive cylinder 82 is projected from the upper surface 82 </ b> B of the drive cylinder 82. The peripheral surface of the pressing member 87 is in contact with the contact surface 39 of the front bush 30 and constitutes a driving mechanism that reciprocally displaces the operating shaft 3 in the axial direction in cooperation with the compression spring 36. . When the pressing member 87 is set to “free code type”, as shown in FIGS. 4, 6, 8, and 10, the center position thereof is the most from the center line of the drive cylinder 82 to the actuator 2 side. It is in a displaced position. Further, when the drive cylinder 82 is rotated 180 degrees by the rotation operation of the switching shaft 80 and is set to the “fixed code type”, the actuator 2 is eccentrically rotated as shown in FIGS. It is in the position most displaced to the opposite side.

Next, the “fixed code type” in which the storage of the unlocked code string is retained even if there is an unlocking operation from the “free code type” in which the memory of the unlocked code string is released for each unlocking operation as described above The operation for switching to will be described.
First, in the “free code type”, in the “open state”, as shown in FIG. 4 and FIG. 26 (1), the pressing member 87 of the drive cylinder 82 is displaced to the actuator 2 side. A pressing member 87 is in contact with the contact surface 39. In this state, the dials 4 and the lock gears 5 are not meshed with each other and are not engaged, and each dial 4 can be set with an arbitrary unlocking code.

  When the switching shaft 80 and the driving cylinder 82 are integrally rotated by 180 degrees with the switching shaft 80 being pushed toward the driving cylinder 82 (shown in FIG. 26 (2)), the pressing member 87 is moved to the front bush 30. The front bushing 30 is pushed to forcibly move the front bush 30 in the opposite direction with respect to the actuator 2 (shown in FIG. 26 (3)). When the front bush 30 moves, the operating shaft 3 is displaced against the spring force of the compression spring 36, and the leading lock gear 5 is pushed by the rear end portion of the front bush 30 and another lock gear connected thereto. When 5 is also pressed, all the lock gears 5 are simultaneously displaced in the opposite direction with respect to the actuator 2. As a result, each lock gear 5 is engaged with each dial 4 and engaged, and an unlock code string is stored (shown in FIGS. 11 and 12). Thereafter, the front bush 30 and the operating shaft 3 are not displaced toward the actuator 2 side, and the state in which each dial 4 and each lock gear 5 are engaged with each other is maintained. “Fixed code type” is set (shown in FIG. 26 (4)).

  Next, in the “open state” of the “fixed code type” shown in FIGS. 11, 12, and 26 (4), when the switching shaft 80 and the drive cylinder 82 are integrally rotated 180 degrees, the pressing member 87 is moved. It is displaced in the direction of the actuator 2. As a result, the front bush 30 is released from the pressing force of the pressing member 87, so that the operating shaft 3 is pushed together with the front bush 30 by the spring force of the compression spring 36 and displaced toward the actuator 2. When the operating shaft 3 is displaced toward the actuator 2, the lock gears 5 are simultaneously displaced toward the actuator 2 when their rear ends are pushed by the partition plates 32 to 35 of the operating shaft 3, and the respective dials 4. Since the engagement with each dial 4 is disengaged away from the remote control, the storage of the unlocked code string is released and the “free code type” is set.

(6) Configuration of the lock mechanism 9 When all the symbols 43 of the dials 4 appearing in the respective window holes 14 are unlocked codes (when the unlocked code strings are aligned), each of the lock mechanisms 9 can be locked and unlocked. The rotation of the actuator 2 is allowed in accordance with the operation, and when the code 43 of any dial 4 is not the unlock code (when the unlock code string is broken), the rotation of the actuator 2 is restricted.
The lock mechanism 9 of this embodiment includes a recess 52 formed on the outer peripheral surface of each lock gear 5, a lock plate 90 having the shape shown in FIG. 33, and two outer peripheral surfaces of the outer cylinder 21 b of the cylindrical body 21 of the actuator 2. It is comprised with the engaging parts 25 and 26 formed in the location.

  The lock plate 90 includes four detection pieces 91 for detecting whether or not all the dials 4 are in the rotation angle positions where the unlocking codes appear in the window holes 14, and all the dials are detected by these detection pieces 91. When it is not detected that 4 is at the angular position where the unlocking code appears in the window hole 14, that is, when the unlocking code string is not aligned, the rotation of the actuator 2 associated with each operation of locking and unlocking is restricted. The regulation piece 92 to be included is included.

  Each detection piece 91 is provided on a rotation shaft 93 parallel to the operation shaft 3 so as to correspond to each lock gear 5. The recess 52 of each lock gear 5 is always positioned at the same rotational angle position when the lock gear 5 is disengaged away from the dial 4, so that the dial 4 and the lock gear 5 are engaged and engaged. Even in a state where the unlocking code set by this appears in the window hole 14, it is located at the same rotation angle position. Therefore, when all the dials 4 are in the rotation angle position where the unlocking code appears in the window hole 14, the leading end portions 91 a of all the detection pieces 91 are fitted in the recesses 52 of the lock gears 5 as shown in FIG. 34. The rotation shaft 93 is rotated in the direction indicated by the arrow p, that is, the unlocked code string is detected.

  On the other hand, when one of the dials 4 is at a rotation angle position where a code other than the unlocking code appears in the window hole 14, as shown in FIG. 35, the detection piece 91 is placed in the recess 52 of the lock gear 5 that meshes with the dial 4. The front end portion 91a is not fitted and rides on the outer peripheral surface of the lock gear 5. As a result, the lock gear 5 of the other dial 4 also rides on the outer peripheral surface without the tip 91a of the detection piece 91 being fitted into the recess 52, so that the rotation shaft 93 is rotated in the direction indicated by the arrow q, that is, The unlocked code string is not detected.

  Both ends of the rotating shaft 93 are supported so as to freely rotate. One end of the rotating shaft 93 protrudes into the space A in which the actuator 2 is mounted, and a restricting piece 92 is provided at the protruding end. ing. A mechanism for restricting the rotation of the actuator 2 is formed by the restricting piece 92 and the engaging portions 25 and 26 formed at two locations of the outer cylinder 21 b of the actuator 2. The restricting piece 92 is engaged with or disengaged from any one of the engaging portions 25 and 26 by forward and reverse rotation of the rotation shaft 93.

  As shown in FIGS. 33 to 35, the restricting piece 92 has engagement peak portions 94A and 94B and an engagement valley portion 94C at one end thereof. On the other hand, the engagement portions 25 and 26 on the outer peripheral surface of the outer cylinder 21b are located at positions corresponding to the engagement mountain portions 94A and 94B and the engagement valley portion 94C, and the valley portions 25A, 25B, 26A and 26B, and the mountain portions 25C, 26C is formed (shown in FIGS. 4, 34, and 35), and the engagement peak portions 94A and 94B and the engagement valley portion 94C of the restriction piece 92 are the valley portions 25A of any of the engagement portions 25 and 26. , 25B, 26A, 26B and mountain portions 25C, 26C, the rotation of the actuator 2 is restricted.

  When the "free code type" is in the "closed state" and when the "fixed code type" is in the "open state" or "closed state", the state where the four unlock codes are arranged (the state where the unlock code strings are aligned) ), The recesses 52 of the respective lock gears 5 are all positioned at the same angular position, and the leading ends 91a of all the detection pieces 91 are fitted into the corresponding recesses 52 of the lock gear 5, so that the rotating shaft 93 is The restricting piece 92 is not engaged with any of the engaging portions 25 and 26 (see FIGS. 7, 11, and 13). Thereby, the operation restriction of the actuator 2 is released, and a locking operation and an unlocking operation are possible.

  On the other hand, if the four unlocking codes are not lined up (the state where the unlocking code strings are not aligned), the leading end 91a of any detection piece 91 is not fitted into the recess 67 of the lock gear 5, Since it rides on the outer peripheral surface of the lock gear 5, the rotation shaft 93 is in a state of being rotationally displaced in the opposite direction to the above, and the restricting piece 68 is engaged with any of the engaging portions 25 and 26 (see FIG. 9 and FIG. 9). FIG. 15). Thereby, the operation of the actuator 2 is restricted, and the locking operation and the unlocking operation become difficult.

  In the “open state” of the “free code type”, the lock gear 5 is disengaged away from the dial 4 and the recesses 52 of all the lock gears 5 are always located at the same predetermined angular position. Therefore, the leading end portions 91a of all the detection pieces 91 are fitted in the corresponding recesses 52 of the lock gear 5, and the restricting pieces 92 are not engaged with the engaging portions 25, and the operation restriction of the actuator 2 is released. (See FIG. 3).

  Next, a series of operations at the time of locking operation and unlocking operation will be described in detail with reference to FIGS.

  First, the operation during the locking operation in the “free code type” will be described. When the code lock device is in the “open state” shown in FIG. 3 and FIG. Is fitted in the concave surface 23 of the outer cylinder 21b and is displaced toward the actuator 2 side. In this state, each dial 4 on the operating shaft 3 is in a freely rotating state in which the engagement with each lock gear 5 is broken, and the unlocking code can be freely set.

  In this state, the recesses 52 of all the lock gears 5 are at the same determined angular position, and the tip end portions 91a of all the detection pieces 91 of the lock mechanism 9 are engaged with the recesses 52. In a state of rotating in a predetermined direction, the restriction piece 92 and the engaging portion 25 are disengaged, and the code lock device is set to a state in which a locking operation is possible.

  When each dial 4 is rotated to set an arbitrary unlocked code string (for example, “1111”) and then the shooting 20 is rotated, the cylindrical body 21 of the actuator 2 is rotated, and the front portion As a result of the bush 30 climbing on the convex surface 24 of the outer peripheral surface of the outer cylinder 21b of the cylindrical body 21 and the operating shaft 3 moving in the opposite direction with respect to the actuator 2, each lock gear 5 is engaged with each dial 4 and unlocked code. A column is stored (see FIGS. 7 and 8). At this stage, each lock gear 5 and each dial 4 are in a state where they can rotate together.

  Thereafter, when the unlocking code string is appropriately broken by the turning operation of each dial 4, the engagement between the distal end portions 91 a of all the detection pieces 91 of the lock mechanism 9 and the recesses 52 is released, and the turning shaft 93 is set to a predetermined position. Therefore, the restricting piece 92 is engaged with the engaging portion 26 (see FIG. 9), and the rotation of the actuator 2 accompanying the unlocking operation is restricted, and the locked state is obtained.

  Next, the operation during the unlocking operation will be described. First, when the respective dials 4 are rotated to align the unlocking code strings (“1111”), the recesses 52 of all the lock gears 5 are determined. Since they come at the same angular position, the leading end portions 91a of all the detection pieces 91 of the lock mechanism 9 are engaged with the concave portion 52, and the engagement between the regulating piece 93 and the engaging portion 26 as the rotation shaft 93 rotates. Since the mismatch occurs (see FIG. 7) and the rotation of the actuator 2 accompanying the unlocking operation is allowed, the code lock device is set in a state where the unlocking operation is possible.

  Next, when the photographing 20 is rotated in the opposite direction, the cylindrical body 21 of the actuator 2 rotates, and the front bush 30 is fitted into the concave surface 23 of the outer cylinder 21b of the cylindrical body 21. As a result of the operating shaft 3 moving toward the actuator 2 by the spring force of the compression spring 36, the lock gears 5 and the dials 4 are disengaged, and the unlocked code string is not stored (see FIGS. 3 and 4). ). At this time, each dial 4 is in a state where it can be rotated independently, that is, in a state where an unlocking code can be set.

In a state where the unlocking code can be set as described above, a screwdriver or the like is engaged in the operation groove 81 of the switching knob 88, and the switching shaft 80 is pushed in 180 degrees (the protrusion 84 for preventing rotation in FIG. When it rotates together (from “free” to “fixed”), it switches to “fixed code type”.
In this “fixed code type”, the pressing member 87 of the drive cylinder 82 is displaced in the opposite direction with respect to the actuator 2, and the contact surface 39 of the front bush 30 is pressed to force the operating shaft 3 in the opposite direction with respect to the actuator 2. Move (see FIG. 12). As a result of the operating shaft 3 moving in the opposite direction with respect to the actuator 2, all the lock gears 5 are simultaneously displaced in the opposite direction with respect to the actuator 2 and engaged with and engaged with the dials 4, and the unlocked code string is stored. The Thereafter, even if an unlocking operation is performed, the operation shaft 3 does not reciprocate and the state in which each dial 4 and each lock gear 5 are engaged with each other is maintained, so that the storage of the unlock code string is maintained.

  Next, the operation at the time of the locking operation in the “fixed code type” will be described. When the code lock device is in the “open state” shown in FIG. 11 and FIG. 12, the dial operation surface 42 of each dial 4 is rotated to align all the unlocked code strings. Since the recesses 52 of the lock gear 5 are at the same determined angular position, the leading ends 91a of all the detection pieces 91 of the lock mechanism 9 are engaged with the recesses 52, and the rotation of the rotation shaft 93 causes the restriction pieces 93 and The engagement with the engagement groove 25 is released (see FIG. 11). Thereby, since the rotation of the actuator 2 accompanying the locking operation is allowed, the code lock device is set in a state where the locking operation is possible.

  Next, after the photographing 20 is rotated, when the unlocking code string is appropriately broken by the rotating operation of each dial 4, the lock gear 5 corresponding to the distal end portions 91 a of all the detection pieces 91 of the lock mechanism 9 is operated. Since the engagement with the recess 52 is released, the rotation shaft 93 rotates in a predetermined direction, the restriction piece 92 engages with the engagement portion 26 (see FIG. 15), and the rotation of the actuator 2 accompanying the unlocking operation is performed. The movement is restricted, and it becomes locked.

  Next, the operation during the unlocking operation will be described. When the code lock device is in the “locked state” shown in FIGS. 15 and 16, the dial operation surface 42 of each dial 4 is rotated and unlocked. When the lock code strings are aligned, the concave portions 52 of all the lock gears 5 come to the same predetermined angular position, so that the leading ends 91a of all the detection pieces 91 of the lock mechanism 9 are engaged with the corresponding concave portions 52 of the lock gear 5. Then, the rotation shaft 93 is rotated to disengage the restricting piece 93 from the engaging portion 26 (see FIG. 13), and the actuator 2 is allowed to rotate with the unlocking operation. Is set in a state where unlocking operation is possible.

  When the photographing 20 is turned in the opposite direction, the latching piece 1 is disengaged from the metal fitting 10 and is in an “open state”, but the front bush 30 and the operating shaft 3 move to the actuator 2 side. Since the engagement between the lock gears 5 and the dials 4 is maintained, the unlock code string is kept stored even when the unlocking operation is performed (see FIGS. 11 and 12). .

  According to the code lock device having the above-described configuration, the “free code type” code lock device that can freely set the unlock code sequence is switched to the “fixed code type” in which the unlock code sequence is fixedly set. Since it can be used, it can be used according to the purpose, such as the use of a specific person or the use of an unspecified person, and the convenience is greatly improved. Further, since it is not necessary to separately manufacture and stock both types of code lock devices, inventory management is easy. Further, since the “free code type” and the “fixed code type” can be switched by the turning operation of the switching shaft 80, there is no possibility that the internal structure becomes complicated and large.

It is a top view which shows the external appearance of the code | symbol locking device which is an Example of this invention. It is a bottom view of the Example of FIG. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of the open state of a free code type. It is the longitudinal cross-sectional view seen from the a direction of FIG. 3 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of a free code type locking operation. It is the longitudinal cross-sectional view seen from the a direction of FIG. 5 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of a closed state of a free code type. It is the longitudinal cross-sectional view seen from the a direction of FIG. 7 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of a free code type locking state. It is the longitudinal cross-sectional view seen from the a direction of FIG. 9 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of the open state of a fixed code type. It is the longitudinal cross-sectional view seen from the a direction of FIG. 11 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of a closed state of a fixed code type. It is the longitudinal cross-sectional view seen from the a direction of FIG. 13 which shows the internal structure of a code lock apparatus. It is sectional drawing seen from the plane which shows the internal structure of a code lock apparatus in the state at the time of the locking state of a fixed code type. It is the longitudinal cross-sectional view seen from the a direction of FIG. 15 which shows the internal structure of a code lock apparatus. It is a longitudinal cross-sectional view which shows the structure of a front part bush. It is sectional drawing which follows the AA line of FIG. It is one side view of a dial. It is the other side view of a dial. It is a front view of a dial. It is one side view of a lock gear. It is the other side view of a lock gear. It is a front view of a lock gear. It is sectional drawing of the lock gear which follows the BB line of FIG. It is explanatory drawing which shows operation | movement of a switching mechanism. It is a top view which shows the structure of a switching shaft. It is a side view which shows the structure of a switching shaft. It is a bottom view which shows the structure of a switching shaft. It is a top view which shows the structure of a drive cylinder. It is a side view which shows the structure of a drive cylinder. It is a bottom view which shows the structure of a drive cylinder. It is a front view of a lock plate. It is explanatory drawing which shows operation | movement of a locking mechanism. It is explanatory drawing which shows operation | movement of a locking mechanism.

Explanation of symbols

2 Actuator 3 Actuating shaft 4 Dial 5 Lock gear 6 Reciprocating mechanism 7 Unlocked code string temporary storage mechanism 8 Switching mechanism 9 Lock mechanism 21 Cylindrical body 21a Inner cylinder 21b Outer cylinder 23 Concave surface 24 Convex surface 30 Front bush 36 Compression spring 39 Contact surface 80 Switching shaft 81 Operation groove 82 Drive cylinder 87 Pressing member 88 Switching knob 90 Lock plate

Claims (3)

Responding to unlocking and locking operations, a plurality of dials with a plurality of symbols on the peripheral surface, an operating shaft that can reciprocate in the axial direction that supports each dial rotatably at a predetermined position An actuator having a cylindrical body that rotates and a reciprocating mechanism that is provided between the cylindrical body and the operating shaft and reciprocally moves the operating shaft in response to forward and reverse rotation of the cylindrical body; A lock gear is provided corresponding to the position of each dial on the operating shaft, and all the lock gears are engaged with each dial by the forward movement of the operating shaft in response to the locking operation, and the unlock code string is stored and unlocked. A temporary storage mechanism that releases the engagement of all lock gears and each dial by releasing the operation shaft in response to a lock operation to release the storage of the unlock code string, and the codes of each dial constitute the unlock code string Actuator operation when aligned In the code lock device that includes a locking mechanism for restricting the operation of the actuator when not in acceptable alignment,
A first storage method by the temporary storage mechanism for releasing the storage of the unlock code string for each unlocking operation, and holding the operating shaft displaced in the forward movement direction with respect to the unlocking operation; A switching mechanism that switches between the second storage system that retains the memory of the unlocked code string without disengaging all the lock gears and the respective dials;
The switching mechanism moves the operating shaft in response to an operation for setting the second storage method by a switching knob provided between the switching knob and the operating shaft provided between the switching knob and the operating shaft. A code lock comprising: a drive mechanism which is set in a state displaced in the moving direction and which sets the operating shaft in a return direction in response to an operation set in the first storage method by the switching knob. apparatus.   The switching mechanism has a rotatable switching shaft whose one end is a switching knob capable of rotating operation and a cam shaft that rotates eccentrically in response to forward and reverse rotation of the switching shaft. A drive mechanism that obtains a displacement along the axial direction of the operating shaft according to the eccentric rotation of the cam shaft, and a displacement along the axial direction of the operating shaft that is provided on the operating shaft and obtained by the drive mechanism is transmitted to the operating shaft. A code lock device according to claim 1, comprising a bush.   The reciprocating mechanism includes a concavo-convex cam surface formed on the outer peripheral surface of the cylindrical body, and a spring member that presses the operating shaft so that one end of the operating shaft is in contact with the concavo-convex cam surface of the cylindrical body. The code lock device according to claim 1 comprising:

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