JP2018162659A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device capable of being further miniaturized than a conventional device, in which a code of a dial returns to a set code when a knob is turned during unlocking or locking.SOLUTION: A lock device comprises: an operation part for operating a stopper which engages with a receiver; a disk-shaped dial capable of being freely set with an arbitrary unlock code, which returns to a predetermined return code when the operation part is operated to a lock position or an unlock position; a wheel freely rotatable with the dial; and a drive part for regulating a rotation of the operation part according to the code of the dial, and returning the dial to the return code. The dial includes a protrusion on one lateral face, and the drive part comprises: a slide part which slides during locking or unlocking; a return operation part which moves in conjunction with the slide part, where a tip moves along one lateral face of the dial and comes in contact with the protrusion of the lateral face to return the dial to the return code; and a regulating part which moves in conjunction with a slide of the slide part, and regulates the rotation of the operation part according to the code of the dial.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lock device.

  There are lock devices that lock storage such as cabinets, storage wagons, and lockers. Further, as an example of a lock device, there is a technique in which a dial code becomes zero when a knob is turned during unlocking or locking (see, for example, Patent Document 1). The code-matching lock of Patent Document 1 includes an operation unit that performs an opening and closing operation, a plurality of dials (hereinafter referred to as dials) members that can set arbitrary passwords, and a follower that stores passwords set by the dial members. A storage member, a latch hub that is rotated by the operating portion having an inner cylinder, an outer cylinder, and an operating arm, a rotary shaft operating member that is rotated about a fixed axis by the latch hub, and a lateral direction by the rotary shaft operating member A zero return mechanism composed of a slide fitting that is moved to the dial, a dial rotation shaft that is fixed to the slide fitting, and a dial member that is inserted through the cylindrical rotation cam through the dial rotation shaft, and release the memory of the storage member And a release mechanism.

Japanese Patent No. 2821368

  The mechanical lock device increases the number of parts due to its multi-functionality, and as a result, tends to increase in size. When the lock device becomes large, the object to use the lock device is limited. In other words, by reducing the size of the lock device as compared with the prior art, it is possible to further widen the objects for which the lock device is used.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a technique relating to a lock device that can be made smaller than before and that returns the dial code to a specified code when the knob is turned during unlocking or locking. And

  In order to solve the above-described problem, the present invention is configured such that the tip of the return operating portion that moves in conjunction with the slide of the slide portion contacts the convex portion on one side surface of the dial to return the dial to the return code.

  More specifically, the lock device according to the present invention is configured to rotate between a locking position and an unlocking position and operate a stopper that engages with a holder, and an arbitrary unlocking code. A disc-shaped dial, wherein the dial returns to a predetermined return code when the operation unit is operated to a locked position or an unlocked position; a wheel that is rotatable together with the dial; and the dial according to a code of the dial A drive unit that restricts rotation of the operation unit and returns the dial to a return code. Further, the dial has a convex portion on one side surface, and the drive unit is slid at the time of locking or unlocking, and the tip is linked to the slide portion, and the tip is on one side surface of the dial. A return actuating portion that moves along the side surface and comes into contact with the convex portion of the side surface to return the dial to the return code, and interlocks with the slide of the slide portion, and rotates the operation portion according to the sign of the dial. And a regulating section that regulates movement.

  The unlocking device according to the present invention has a convex portion provided on one side surface of the dial, and the tip of the return operating portion moves along one side surface of the dial in conjunction with the slide portion during unlocking or locking. The dial returns to the return code by contacting the part. Thereby, the lock apparatus which concerns on this invention can be reduced in size compared with the past. Specifically, for example, a conventional code-matching lock (hereinafter referred to as a conventional lock device) as described in Patent Document 1 is a slide in which a zero return mechanism moves laterally in conjunction with an operation unit. A dial rotation shaft that is fixed to the metal fitting and slides together with the slide metal fitting, and a dial member that is inserted through the dial rotation shaft and has a cylindrical cam formed inside the cylindrical portion. In the conventional lock device, when the dial rotation shaft moves with respect to the dial member, the dial member rotates by the action of the cylindrical cam, and 0 is automatically displayed. Therefore, the conventional lock device requires a length for realizing the function of the cylindrical cam of the dial member in the axial direction as the cylindrical cam. Therefore, the conventional lock device must sufficiently secure the length in the direction in which the dial rotation shaft moves, in other words, the lateral length of the lock device. On the other hand, in the lock device according to the present invention, at the time of unlocking or locking, the tip of the return operation portion moves along one side surface of the dial and comes into contact with the convex portion provided on the side surface. Is restored to the return code. The return actuating portion may be positioned on the side of the dial and move within the dial diameter range. That is, the lock device according to the present invention can effectively restore the dial to the return code by effectively utilizing the space on the side of the dial (between the dials when there are a plurality of dials). The lock device of the present invention does not need to move the dial or the axis of the dial in the axial direction when returning the dial to the return code. Therefore, the axial length of the dial can be made shorter than before, and as a result, the lock device can be made smaller than before.

  Examples of the receptacle include receptacles for storage such as a cabinet, a storage wagon, and a locker. However, the receiver is not limited to these. The lock device according to the present invention can be used in various storages that require locking. The dial code can be composed of, for example, numbers from 0 to 9, but is not limited thereto. The code may be other numbers, characters, etc., as long as they can be identified. Although four dials can be arranged side by side, the number is not limited. The convex part on the side surface of the dial can have an uneven flat shape (for example, a shape like a lotus petal). The wheel can be arranged according to the number of dials. The unlock code can be arbitrarily set, in other words, changed at the time of use. On the other hand, the return code is set to a predetermined code, that is, any code at the time of manufacture. The drive unit includes each part (part) that contributes to the operation of locking and unlocking the lock device in addition to the slide unit, the return operation unit, and the regulating unit.

  Here, in the lock device according to the present invention, the dial has a gear on the other side surface, and the drive unit is interlocked with the slide unit and feels when the dial is rotated in contact with the gear. The resistance actuating part may be moved in conjunction with the slide part and separated from the gear when the dial returns to the return code.

  By bringing the gear of the dial and the resistance operation portion into contact with each other, it is possible to give the user a feel (click feeling) when the dial is rotated. The resistance actuating part can be arranged on the other side of the dial. For example, when there are a plurality of dials, a return operation unit and a resistance operation unit are arranged between the dials. The lock device according to the present invention can return the dial to the return code by effectively utilizing the space on the side of the dial (between the dials when there are a plurality of dials). It is possible to generate a feeling when the is rotated.

  In the lock device according to the present invention, when the operation unit is in the unlocked position, the drive unit releases the engagement between the dial and the wheel, and changes the position where the dial and the wheel mesh. It may further have a code setting unit for setting the unlock code. Thereby, an unlocking code can be changed.

  The lock device according to the present invention is a cylinder lock connected to the operation unit, and includes an inner cylinder having a keyhole and an outer cylinder to which the inner cylinder is attached, and an inner cylinder exchange key for the keyhole The inner cylinder may be further slidable with respect to the outer cylinder by the insertion of the inner cylinder, and an inner cylinder replacement type cylinder lock capable of extracting the inner cylinder from the outer cylinder may be further provided. Thereby, exchange of the inner cylinder (cylinder) rotatably fitted in the outer cylinder becomes possible.

  The lock device according to the present invention may further include an indicator that is connected to the operation unit and displays a locking state in conjunction with the rotation of the operation unit. Thereby, the user can grasp | ascertain the state of locking easily.

  Moreover, you may identify this invention as a storage provided with the lock apparatus mentioned above.

  ADVANTAGE OF THE INVENTION According to this invention, it can reduce in size rather than before and can provide the technique regarding the lock apparatus which the code | symbol of a dial returns to a regulation code | symbol when turning a knob at the time of unlocking or locking.

FIG. 1 is a perspective view of the front side of the dial lock according to the first embodiment. FIG. 2 is a rear view of the dial lock according to the first embodiment. FIG. 3 is a front perspective view of the dial lock according to the first embodiment with the housing and the front panel removed. FIG. 4 is a perspective view of the back side of the dial lock according to the first embodiment with the housing and the front panel removed. FIG. 5 is a front perspective view of the dial lock according to the first embodiment, in which the middle plate and the knob are further removed from the dial lock of FIG. 3. FIG. 6 is a perspective view of the back side of the dial lock according to the first embodiment with the stopper further removed from the dial lock of FIG. 5. FIG. 7A shows a perspective view of the front side of the housing. FIG. 7B is a front view showing the relationship between the housing and the slide plate or the like. FIG. 8 is a longitudinal sectional view showing the relationship between the housing and the wheel. FIG. 9 shows a perspective view of the back side of the front panel. FIG. 10 is a perspective view of one side surface of the dial according to the first embodiment. FIG. 11 is a perspective view of the other side surface of the dial according to the first embodiment. FIG. 12 is a perspective view of one side of the wheel according to the first embodiment. FIG. 13 is a perspective view of the other side surface side of the wheel according to the first embodiment. FIG. 14 is a perspective view of the slide plate according to the first embodiment. FIG. 15 is a perspective view of the boat according to the first embodiment. FIG. 16 is a perspective view of the holder according to the first embodiment. FIG. 17 is a perspective view of the number search plate according to the first embodiment. FIG. 18A is a perspective view (right side) of the arm according to the first embodiment. FIG. 18B is a perspective view (left side) of the arm according to the first embodiment. FIG. 19 is a perspective view of the dial spring according to the first embodiment. FIG. 20 is a perspective view of the connector according to the first embodiment. FIG. 21 is a perspective view of the comb according to the first embodiment. FIG. 22 is a perspective view of the upper side of the groove plate according to the first embodiment. FIG. 23 is a perspective view of the lower side of the groove plate according to the first embodiment. FIG. 24 is a bottom view of the groove plate according to the first embodiment. FIG. 25 is a perspective view of the back side of the middle plate according to the first embodiment. FIG. 26 is a perspective view of the front side of the bar according to the first embodiment. FIG. 27 is a perspective view of the L plate according to the first embodiment. FIG. 28 is a front perspective view of the drive shaft according to the first embodiment. FIG. 29 is a perspective view of the front side of the indicator according to the first embodiment. FIG. 30A is a front view showing the relationship between the cylinder and the indicator. FIG. 30B is a front view showing the relationship between the front panel, the cylinder, and the indicator in the locked state and the unlocked state. FIG. 31 is a perspective view of the indicator spring according to the first embodiment. FIG. 32 is a side view of the number search key according to the first embodiment. FIG. 33 shows the relationship between the inner cylinder replacement key and the cylinder according to the first embodiment. FIG. 34A is a perspective view showing a relationship between a knob, an arm, and a sleeve in a locked state. FIG. 34B is a perspective view showing the relationship between the cylinder and the sleeve. FIG. 35 is a perspective view showing the relationship among the wheel, slide plate, arm, and boat in the locked state. FIG. 36A is a perspective view showing a relationship among a sleeve, a connector, a groove plate, an L plate, a slide plate, and an arm in a locked state. FIG. 36B is a bottom cross-sectional view showing the relationship among the bar, the comb, the groove plate, and the dial spring in the locked state and the unlocked state. FIG. 36C is a perspective view showing the relationship between the holder, the comb, and the bar in the locked state. FIG. 37A is a cross-sectional view showing the relationship between the dial and the dial spring. FIG. 37B shows a state where the tip V-shaped convex portion of the protruding wall of the slide plate is fitted in the V-shaped groove portion of the wheel and a state where it is detached from the V-shaped groove. FIG. 38A is a cross-sectional view showing the relationship between the comb and the return part of the dial. FIG. 38B shows a state in which the tip V-shaped convex part of the protruding wall of the slide plate is not fitted into the V-shaped groove part of the wheel and is in contact with the side surface on the V-shaped groove part side. FIG. 39 is a cross-sectional view showing the relationship among the knob, cylinder, and drive shaft in the locked state. FIG. 40 is a longitudinal sectional view showing the relationship among the knob, the cylinder, and the drive shaft in the locked state. FIG. 41 is a front perspective view showing the relationship among the knob, dial, slide plate and the like in the unlocked state. FIG. 42 is a sectional view showing the relationship between the boat and the dial. FIG. 43 is a rear perspective view showing the relationship between the boat and the wheel. FIG. 44 is a rear perspective view showing the relationship between the boat, wheel, dial, and the like. FIG. 45 is a rear perspective view showing the relationship among the number search plate, wheel, dial, and the like. FIG. 46 shows a cross-sectional view of the cylinder. FIG. 47 is a cross-sectional view for explaining the relationship between the number search key and the cylinder. FIG. 48 is a cross-sectional view showing the relationship between the sleeve and the cylinder when the number search key is used. FIG. 49 is a cross-sectional view showing the relationship between the sleeve and the cylinder when the inner cylinder replacement key is used. FIG. 50 is a perspective view of the front side of the dial lock according to the second embodiment. FIG. 51 is a rear view of the dial lock according to the second embodiment. FIG. 52 is a perspective view of the front side of the middle plate according to the second embodiment. FIG. 53 is a perspective view of the front side of the indicator according to the second embodiment. FIG. 54 is a front perspective view showing the relationship between the middle plate and the indicator according to the second embodiment. FIG. 55 is a perspective view of the front side of the sleeve according to the second embodiment. FIG. 56 is a front perspective view showing the relationship between the indicator and the sleeve according to the second embodiment in the locked state. FIG. 57 is a front perspective view showing the relationship between the indicator and the sleeve according to the second embodiment in the unlocked state. FIG. 58 is a perspective view of the front side of the dial lock according to the third embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings. The following description is an example, and the present invention is not limited to the following contents.

<First Embodiment>
<Configuration>
FIG. 1 shows a front view of a dial lock according to the first embodiment. FIG. 2 is a rear view of the dial lock according to the first embodiment. FIG. 3 is a front perspective view of the dial lock according to the first embodiment with the housing and the front panel removed. FIG. 4 is a perspective view of the back side of the dial lock according to the first embodiment with the housing and the front panel removed. FIG. 5 is a front perspective view of the dial lock according to the first embodiment, in which the middle plate and the knob are further removed from the dial lock of FIG. 3. FIG. 6 is a perspective view of the back side of the dial lock according to the first embodiment with the stopper further removed from the dial lock of FIG. 5. In the following description, as indicated by an arrow in FIG. 1, the front where the dial 4 is exposed is described as “front”, and the back is described as “rear”. Moreover, in description of each component (part), it demonstrates on the basis of the case where the state in which the component was incorporated was seen from the front.

  The dial lock A (an example of the lock device of the present invention) includes a housing 1, a front panel 2, a knob 3, a dial 4, a sleeve 5, a cylinder 6, a wheel 7, a slide plate 8, a boat 9, a holder 10, and a number search plate 11. , Arm 12, dial spring 13, connector 14, comb 15, groove plate 16, middle plate 17, bar 18, L plate 19, stopper 20, drive shaft 22, indicator 23, number search key 24 (see FIG. 32), An inner cylinder replacement key 25 (see FIG. 47) is provided.

  The housing 1 has a rectangular parallelepiped box shape that is open at the front and elongated in the left-right direction, and accommodates each part therein. FIG. 7A shows a perspective view of the front side of the housing. FIG. 7B is a front view showing the relationship between the housing and the slide plate or the like. FIG. 8 is a longitudinal sectional view showing the relationship between the housing and the wheel. As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 7A, FIG. 7B, FIG. 8, etc., the housing 1 includes a shaft portion 1a, a shaft portion 1b, a boat stopper 1c, a setting number confirmation button 1d, a switch housing portion 1e, It has a spring receiving portion 1f, a rising portion 1g, a cylinder 1h, a through hole 1j, and a rotation restricting projection 1k. The shaft portion 1a supports the arm 12 so as to be rotatable. The shaft portion 1 a is formed of a column that rises from the inside of the back surface of the housing 1 and extends to the back surface of the middle plate 17. The shaft portion 1b supports the L plate 19 so as to be rotatable. The shaft portion 1 b is configured by a cylindrical protrusion protruding from the inside of the back surface of the housing 1. The boat stopper 1c (see also FIG. 42) operates like a seesaw in cooperation with the setting number confirmation button 1d, and holds the boat 9 at the position where the boat 9 is slid (when the number is set). The boat stopper 1c is configured by a bar that extends rightward and has a free end. The setting number confirmation button 1d is connected to the base portion of the boat stopper 1c and operates like a seesaw in cooperation with the boat stopper 1c to release the holding of the boat stopper 1c and determine the setting number. The setting number confirmation button 1d is constituted by a bar having a free end extending in the left direction (the direction opposite to the boat stopper 1c). The switch accommodating portion 1e (see also FIG. 42) accommodates the number setting switch 91 and the boat spring 95 therein. The switch accommodating portion 1e (see also FIG. 42) is formed by a convex portion having a space inside that protrudes to the outside of the back surface of the housing 1. The left side of the switch accommodating portion 1e made of a convex portion is opened so that the number setting switch 91 can slide. The spring receiving portion 1f accommodates and supports the number search plate spring 114. The spring receiving portion 1f is formed of a semicircular recess formed in the back surface of the housing 1 and extending in the left-right direction (lateral direction) and a wall that slightly rises inward from the left end. The rising portion 1 g is connected to the boat 9 and supports the boat 9. The rising portion 1g is composed of four protrusions that are raised from the inner side of the back surface of the housing 1 at equal intervals in the left-right direction, and the tip of each protrusion is formed in a stepped shape. The cylinder 1h fixes the front panel 2. The cylinder 1h is constituted by three columnar protrusions raised from the inside of the back surface, and has screw holes for fixing the front panel 2 extending in the front-rear direction inside the protrusions. The drive shaft 22 to which the stopper 20 on the back outer side of the housing 1 is fixed penetrates the through hole 1j. The through hole 1j is a circular through hole. The rotation restricting protrusion 1k is in contact with a restricting protrusion receiving portion 56 formed of a notch formed at the end on the back side of the sleeve 5 to restrict the rotation of the sleeve 5 (see FIG. 36A). Consists of protrusions raised from the inside of the back.

  The front panel 2 is connected to the housing 1 and covers the open portion of the housing 1, in other words, the front face of the dial lock A. Here, further explanation will be made with reference to FIG. FIG. 9 shows a perspective view of the back side of the front panel. As shown in FIGS. 2 and 9, etc., the front panel 2 has an open / close display window 2a, a dial shaft fixing wall 2b, a circular recess 2d, a cylinder 2e, an indicator recess 2f, a dial display window 2g, and a knob opening 2h. . The open / close display window 2a displays two colors printed on the fan portion 232 (see FIGS. 3 and 5) of the indicator 23 according to the unlocked state and the locked state of the dial lock A. The open / close display window 2 a is configured by a circular through hole formed near the upper part of the knob 3. The dial display window 2g displays the dial 4. The dial display window 2g is formed of a rectangular opening that is long in the vertical direction (vertical direction), and is formed at four locations according to the number of dials 4. The dial shaft fixing wall 2b holds and fixes the dial shaft 212. The dial shaft fixing wall 2b is formed on both sides of the dial display window 2g, and is formed in five places in total. The dial shaft fixing wall 2 b is configured by a wall raised from the inside of the front panel 2. A U-shaped 2c made of a U-shaped concave portion for holding and fixing the dial shaft 212 is formed at the tip of the dial shaft fixing wall 2b. The circular concave portion 2 d is connected to the circular convex portion 173 of the middle plate 17. The circular recess 2d is formed of a circular recess formed on the back surface of the front panel 2, and is formed in a total of eight locations near the upper portion and the lower portion of the dial display window 2g. The column 2e is connected to the housing 1. The column 2 e is a column that rises from the back surface of the front panel 2 and extends to the end surface of the column 1 h of the housing 1. The cylinder 2e is formed at three positions corresponding to the cylinder 1h of the housing 1, and screw holes that are inserted through the screw holes formed in the cylinder 1h of the housing 1 are formed therein. The indicator recess 2 f suppresses excessive rotation of the indicator 23. The indicator recess 2 f is configured by a fan-shaped recess formed on the back surface of the front panel 2. At the center of the indicator recess 2f, an open / close display window 2a for displaying the indicator 23 is formed. The knob 3 is inserted through the opening 2h of the knob. The opening 2h of the knob is composed of a circular through hole.

  The knob 3 corresponds to the operation unit of the present invention, and rotates between the locking position and the unlocking position to operate the stopper 20 that engages with the receiving tool. The knob 3 is composed of a disc-shaped main body portion and a protruding portion projecting from the disc-shaped main body portion to the front side. A key insertion hole 31 for inserting the number search key 24 or the inner cylinder replacement key 25 is formed in the protruding portion of the knob 3. The knob 3 is detachably fitted into the cylinder 6.

  The cylinder 5 is detachably inserted into the sleeve 5. The sleeve 5 and the cylinder 6 rotate together unless the number search key 24 or the inner cylinder replacement key 25 is inserted into the cylinder 6. The sleeve 5 and the cylinder 6 will be described in detail in the operation description to be described later.

  The dial 4 can be set to an arbitrary unlocking code, and when the knob 3 is operated to the locking position or the unlocking position, the dial 4 returns to a predetermined return code. In the first embodiment, four dials 4 are provided, but the number of dials can be one or more. Here, further explanation will be given with reference to FIGS. FIG. 10 is a perspective view of one side (left side) of the dial according to the first embodiment. FIG. 11 is a perspective view of the other side surface (right side) of the dial according to the first embodiment. The dial 4 has a disk shape and is formed with a number portion 41 having numbers 0 to 9 printed on the outer peripheral surface thereof. The dial 4 has a through-hole 44 in the center and can be inserted through the dial shaft 212. Furthermore, a return portion 43 corresponding to the convex portion of the present invention is formed on one side surface (left side surface), and a gear portion 42 corresponding to the gear of the present invention is formed on the other side surface (right side surface). ing. The gear part 42 and the return part 43 are located on both sides of the numeral part 41. The return portion 43 abuts on an arm portion 154 (corresponding to a return operation portion of the present invention, see FIGS. 19 and 38) of the comb 15, which will be described later, and makes the dial 4 a return code “0 (zero)”. To return. The return portion 43 protrudes from the left side surface of the dial 4 and has a shape in which the base portion is circular and narrows toward the tip in a side view. In other words, in a side view, the return portion 43 has a shape like a lotus petal or a water drop, and has a biased shape in which the petal root 431 (base of the base) is located near the center of the dial 4. . Such a biased shape is a shape for returning the dial 4 to the return code “0 (zero)” in the shortest distance by the return portion 43 and the arm portion 154 of the comb 15 contacting each other. Further, in the outer peripheral surface of the return portion 43, a petal root 431 is formed with a recess for maintaining the state where the arm portion 154 of the comb 15 is brought into contact and returned to the return code. Note that the default return code can be changed by adjusting the orientation of the return portion 43 and the positional relationship between the number portion 41 during molding. In the first embodiment, the default return code is set to “0 (zero)”. Here, the arm portion 154 of the comb 15 extends from the top to the bottom, and when the dial 4 is returned to “0 (zero)” which is a return code, the tip comes into contact with the peripheral surface of the return portion 43. . Therefore, in the dial 4 of the first embodiment, when the petal root 431 is on the upper side, in other words, when the tip of the return part 43 is downward, the arm part 154 of the comb 15 is fitted in the recess of the petal root 431. The return code “0” is displayed on the front. The gear portion 42 engages with the gear portion 71 of the wheel 7. The gear portion 42 protrudes from the right side surface of the dial 4, and has an unevenness on the outer peripheral surface, and has a gear shape in a side view.

  The wheel 7 rotates together with the dial 4 when engaged with the dial 4. The engagement between the wheel 7 and the dial 4 can be released by a boat 9 described later. In the first embodiment, four wheels 7 are provided, but the number of wheels 7 can be one or more as in the case of the dial 4. Here, further explanation will be made with reference to FIGS. FIG. 12 is a perspective view of one side (left side) of the wheel according to the first embodiment. FIG. 13 is a perspective view of the other side surface (right side) of the wheel according to the first embodiment. The wheel 7 is also disk-shaped like the dial 4, and a gear portion 71 that engages with the gear portion 42 of the dial 4 is formed on the outer peripheral surface. A part of the outer peripheral surface of the wheel 7, in other words, one of the valleys of the gear portion 71, is formed with a substantially U-shaped notch 76. The substantially U-shaped notch 76 fits into the rising portion 1g of the housing 1 when the boat 9 slides. A cylindrical portion 74 protruding from one side surface of the wheel 7 is formed at the center of one side surface (left side) of the wheel 7. A shaft through hole 75 through which the wheel shaft 211 is inserted is formed in the cylindrical portion 74. Moreover, the square hole through-hole 73 which consists of a rectangular through-hole is formed in one side surface. The tip 112 of the prism 111 of the number search plate 11 is fitted into the square hole through-hole 73. Further, a V-shaped groove 72 is formed in the vicinity of the outer peripheral surface of the other side surface (right side surface). The gear portion 42 of the dial 4 and the gear portion 71 of the wheel 7 are engaged with each other so that the V-shaped groove portion 72 comes to a predetermined position when an unlocking code of the dial 4, for example, “1234” is displayed. When the V-shaped groove portion 72 moves to a predetermined position, the tip V-shaped convex portion 811 of the protruding wall 81 rising at an equal interval from the slide plate 8 is fitted into the V-shaped groove portion 72 of the wheel 7.

  The slide plate 8 constitutes a part of the drive portion of the present invention, particularly the slide portion, and comes into contact with the wheel 7 to regulate the rotation of the knob 3 or the like. Here, further explanation will be made with reference to FIG. FIG. 14 is a perspective view of the slide plate according to the first embodiment. The slide plate 8 is made of a rectangular plate member, and includes a protruding wall 81, a first spring receiving portion 82, an arm pushing portion 83, and a protruding piece 84. Four protruding walls 81 are raised on one long side (rear side) of the slide plate 8 corresponding to the distance between the wheels 7. At the tip of the protruding wall 81, a V-shaped tip V-shaped convex portion 811 that is perpendicular to the protruding wall 81 is formed, and the tip V-shaped convex portion 811 has the V-shaped groove portion 72 of the wheel 7 at a predetermined position. When they are aligned, they fit into the V-shaped groove 72 of the wheel 7. The first spring receiving portion 82 is formed at a corner on one long side (back side) of the slide plate 8. The first spring receiving portion 82 protrudes rearward from the long side, and has a cylindrical protrusion protruding rightward that is passed through a slide plate spring 822 that urges the slide plate 8. The arm pushing portion 83 protrudes from the short side on the opposite side (left side) of the first spring receiving portion 82 and abuts on the arm 12. The arm pushing portion 83 is formed with a columnar shape 831 extending leftward from the arm pushing portion 83, and a second spring receiving portion 832 that is formed larger than the diameter of the columnar shape 831 is formed at the tip thereof. Yes. The protruding piece 84 contacts the L plate 19. The protruding piece 84 is formed so as to protrude from the vicinity of the protruding wall 81 on the arm pushing portion 83 side, out of one long side (the long side on the back side) of the slide plate 8.

  The boat 9 constitutes a part of the drive unit of the present invention, particularly the sign setting unit, and supports the wheel 7 and slides itself to release the engagement between the dial 4 and the wheel 7. Here, further explanation will be made with reference to FIG. FIG. 15 is a perspective view of the boat according to the first embodiment. As shown in FIGS. 4, 6, 15, 42, and the like, the boat 9 includes a number setting switch 91, a wheel fixing portion 92, a first corner recess 93, a second corner recess 94, and a boat spring 95. The number setting switch 91 is an operation switch for setting the unlocking code, and protrudes from the one end portion (left end portion) of the main body portion made of a rectangular plate long in the left-right direction to the back side at a right angle to the plate surface. It is composed of prisms. The wheel fixing portion 92 supports the wheel 7 via the wheel shaft 211. The wheel fixing portion 92 is composed of a triangular piece in a side view raised from the surface (front surface) opposite to the number setting switch 91. Four wheel fixing portions 92 are provided at equal intervals corresponding to the wheel 7, and through holes 92 a through which the wheel shafts 211 are inserted are formed at the respective tips. The first corner recess 93 and the second corner recess 94 hold the sliding boat 9 when the tip of the boat stopper 1c of the housing 1 enters. The first corner recess 93 and the second corner recess 94 are formed side by side on the same side as the number setting switch 91 (the back side) and on the opposite side (the right side). An inclined side 931 that is inclined is formed on the wall of the first corner recess 93 on the second corner recess 94 side. A wall surface 941 made of a vertical wall is formed on the wall of the first corner recess 93 of the second corner recess 94. The boat spring 95 (see FIG. 42) protrudes to the outside of the back surface of the housing 1 and is accommodated in the switch accommodating portion 1e formed of a convex portion having a space inside, and urges the boat 9 leftward.

  The holder 10 constitutes a part of the drive unit of the present invention, and stores the comb 15 and the bar 18 and holds them. Further, the holder 10 performs a guide or the like when the groove plate 16 slides in accordance with the rotation of the sleeve 5. Here, further explanation will be made with reference to FIG. FIG. 16 is a perspective view of the holder according to the first embodiment. The holder 10 is fixed to the housing 1 with screws, and includes a comb housing groove 101, a bar housing groove 102, a groove guide 103, and an arm portion 104. The comb housing groove 101 is a space formed between a plurality of arm portions 104 extending in a comb shape toward the front surface, and accommodates the arm portion 154 of the comb 15. The bar housing groove 102 is formed of a linear recess extending in the left-right direction and houses the bar 18. The groove guide 103 is composed of a vertical wall extending in the left-right direction, and functions as a guide when the groove plate 16 contacts the groove plate 16 and slides in accordance with the rotation of the sleeve 5. At the tip ends of the plurality of arm portions 104 extending in a comb shape, tip convex corner portions 104 a that engage with the concave corner portions 171 of the middle plate 17 are formed.

  The number search plate 11 constitutes a part of the drive unit of the present invention, and performs a number search in cooperation with other parts during the number search. Here, further explanation will be given with reference to FIG. FIG. 17 is a perspective view of the number search plate according to the first embodiment. The number search plate 11 includes a base 110, a prism 111, a tip 112, a branch 115, and a search operation unit 113. The prism 111 is formed of a prism that rises from one surface (front surface) of the base 110 made of an elongated plate extending in the left-right direction and extends toward the front. The tip 112 includes a protruding portion that protrudes to the left (knob 3 side) from the tip of the prism 111. The tip 112 enters and engages with the square hole through-hole 73 of the wheel 7 when searching for numbers. The branch part 115 extends downward from the lower part of the base part 110, bends, and finally extends to the left (knob 3 side). The search operation unit 113 includes a protruding portion that protrudes upward from the tip of the branch portion 115. The search operation unit 113 comes into contact with a search arm 224 extending from the drive shaft 22 during a number search.

  The arm 12 constitutes a part of the drive portion of the present invention, particularly the restriction portion, and rotates in conjunction with the slide plate 8 to restrict the rotation of the sleeve 5. Here, it will be further described with reference to FIGS. 18A and 18B. FIG. 18A is a perspective view (right side) of the arm according to the first embodiment. FIG. 18B is a perspective view (left side) of the arm according to the first embodiment. The arm 12 includes a main body 121, a long hole 122, and an arm 124. The main body 121 is configured by a cylinder extending in the front-rear direction, and the shaft 1 a protruding from the housing 1 is inserted therethrough. The long hole portion 122 includes a protruding portion that protrudes downward from the lower portion of the main body portion 121. When viewed from the right side, the elongated hole portion 122 is an oblong through-hole that is long in the vertical direction (see FIG. 18A). Further, when viewed from the left side, the elongated hole portion 122 is formed with a step 123 (see FIG. 18B) at which the second spring receiving portion 832 of the slide plate 8 is caught. Further, when viewed from the left side, the long hole portion 122 has a lower portion bulging outward, and has a daruma shape as a whole. The elongated hole portion 122 is inserted into the columnar shape 831 of the slide plate 8 and contacts the arm pushing portion 83. The arm portion 124 extends upward from the opposite side of the elongated hole portion 122, that is, from the upper portion of the main body portion 121, and is curved in accordance with the outer peripheral surface of the sleeve 5.

  The dial spring 13 constitutes a part of the driving portion of the present invention, particularly the resistance actuating portion, and generates a feeling (clicking feeling) when the dial 4 is rotated by contacting the gear portion 42 of the dial 4. Here, further explanation will be made with reference to FIG. FIG. 19 is a perspective view of the dial spring according to the first embodiment. The dial spring 13 includes a convex portion 131, a main body portion 132, an arm portion 133, and a claw portion 134. The dial spring 13 has a reverse S-shape when viewed from the side. The convex portion 131 is formed on one end side (rear side) of the main body portion 132 extending in the front-rear direction, and is accommodated in the dial spring control concave portion 183 of the bar 18. The main body part 132 is connected to the convex part 131 and has a C shape with the upper part opened, and the shaft part 151 of the comb 15 is inserted therethrough. The arm part 133 is connected to the main body part 132 and is slightly curved. The claw portion 134 hangs down from the front end portion of the arm portion 133 and is usually fitted in the trough portion 42 a of the gear portion 42 of the dial 4.

  The connector 14 constitutes a part of the drive unit of the present invention, and slides the groove plate 16 in conjunction with the rotation of the sleeve 5. Here, further explanation will be made with reference to FIG. FIG. 20 is a perspective view of the connector according to the first embodiment. FIG. 20 is a perspective view of the connector 14 as seen from the back side. The connector 14 includes a main body hole portion 141, a C-shaped portion 142, and a connector arm 143. The main body hole portion 141 is a through hole provided at the left end portion of the connector arm 143 extending in the left-right direction, and is connected to the connecting convex portion 52 of the sleeve 5. The C-shaped portion 142 is provided at the right end of the connector arm 143 and has a C-shape that opens downward. The C-shaped part 142 is connected to the groove connect 161 of the groove plate 16.

  The comb 15 constitutes a part of the drive portion of the present invention, particularly the return operation portion, and rotates in conjunction with the slide of the groove plate 16, and the arm portion 154 rotates along one side surface of the dial 4. Then, the dial 4 is brought into contact with the return portion 43 of the dial 4 to return the dial 4 to the return code. Here, further explanation will be made with reference to FIG. FIG. 21 is a perspective view of the comb according to the first embodiment. The comb 15 includes a shaft portion 151, a main body portion 152, a runner 153, and an arm portion 154. The shaft portion 151 is a shaft extending in the left-right direction, and is supported by the C-shaped main body portion 132 of the dial spring 13. The main body 152 is a cylinder having a larger diameter than the shaft 151 and is formed on both sides of each arm 154. The runner 153 includes a projecting portion that projects obliquely upward from the main body 152 toward the back side, and has a tip that is circular in a side view. The runner 153 is engaged with the wave rail 165 of the groove plate 16. The arm portion 154 extends from the main body portion 152 obliquely upward on the front side, and is further inclined so that the tip thereof faces obliquely upward on the front side. The arm portion 154 contacts the return portion 43 of the dial 4 when the dial 4 is returned to the return code.

  The groove plate 16 constitutes a part of the driving portion of the present invention, particularly the sliding portion, and slides when locked or unlocked. Here, further explanation will be made with reference to FIGS. FIG. 22 is a perspective view of the upper side of the groove plate according to the first embodiment. FIG. 23 is a perspective view of the lower side of the groove plate according to the first embodiment. FIG. 24 is a bottom view of the groove plate according to the first embodiment. The groove plate 16 includes a groove connect 161, a protruding portion 162, a first lift portion 163, a second lift portion 164, and a wave rail 165. The groove plate 16 is composed of a rectangular plate in plan view that extends in the left-right direction. The groove connect 161 is formed of a cylinder formed in an end portion (left end portion) on the knob 3 side and extending in the front-rear direction, and is fitted to the C-shaped portion 142 of the connector 14. The projecting portion 162 is configured by a projecting portion that projects slightly from the groove connect 161 side to the back side (rear) from the center of the long side on the back side. The protrusion 162 has a C-shape (as viewed from the back) with the top opened and is flat. The protrusion 162 abuts on the L plate 19 as the groove plate 16 slides. The 1st lift part 163 and the 2nd lift part 164 are comprised by the groove-shaped rail extended in the left-right direction. A first lift guide 181 of the bar 18 is engaged with the first lift portion 163, and a second lift guide 182 of the bar 18 is engaged with the second lift portion 164. The first lift part 163 is formed of a central low part (163b) and high parts (163a, 163c) on both sides so that the bar 18 can be moved up and down according to the slide of the groove plate 16, and the central low part and both side parts are formed. The high part is connected by a slope. The second lift part 164 has the same configuration as the first lift part 163, and the lower part (164 b) at the center is the higher part (164 a, 164 c) on both sides so that the bar 18 can be raised and lowered according to the slide of the groove plate 16. The lower part on both sides is connected by a slope. The wave rail 165 is configured by a wave-shaped rail formed on the lower surface of the groove plate 16. The wave rail 165 is located on the back side, and the mountain portions (165a, 165c) farthest from the wheel and the valley portions (165b) located on the front side and closest to the wheel are alternately arranged. . The runner 153 of the comb 15 is engaged with the wave rail 165.

  The middle plate 17 is provided inside the front panel 2 and accommodates the dial 4 and holds the sleeve 5. Here, further explanation will be made with reference to FIG. As shown in FIGS. 3, 25, etc., the middle plate 17 has a concave corner portion 171, a dial accommodating portion 172, a circular convex portion 173, a long hole 174, and a sleeve accommodating portion 175. A plurality of the recessed corner portions 171 are formed at the upper part on the back side of the middle plate 17. The convex corner portion 104 a of the arm portion 104 of the holder 10 is fitted into the concave corner portion 171. The dial accommodating portion 172 accommodates the set of dials 4 through which the dial shaft 212 is inserted. The dial accommodating portion 172 includes a portion recessed on the back side (rear) to accommodate the dial shaft 212 and a rectangular opening that is long in the vertical direction for accommodating the dial 4. The circular convex portion 173 is a circular convex portion protruding from the front side of the middle plate 17, and a plurality of circular convex portions 173 are formed on the upper and lower portions of the dial accommodating portion 172. The circular convex portion 173 is connected to a circular concave portion 2 d formed on the back surface of the front panel 2. The long hole 174 is a straight through hole formed in the upper part of the knob 3 and extending in the left-right direction. A circular through hole 174a is formed in the vicinity of the long hole 174 on the dial 4 side and on the extended line of the long hole 174. A folding portion at one end of the indicator spring 235 (see FIG. 31) is inserted and fixed in the through hole 174a. In the elongated hole 174, the folded portion at the other end of the indicator spring 235 is movably accommodated. The sleeve accommodating portion 175 has a cylindrical shape and accommodates the sleeve 5.

  The bar 18 constitutes a part of the drive unit of the present invention, is incorporated in the groove plate 16, and moves up and down during locking or unlocking. Here, further explanation will be made with reference to FIG. FIG. 26 is a perspective view of the front side of the bar according to the first embodiment. The bar 18 is made of a rod-like member having a quadrangular sectional view extending in the left-right direction, and includes a first elevating guide 181, a second elevating guide 182, and a dial spring control recess 183. The first elevating guide 181 includes a protruding portion that protrudes upward from the upper surface of the end portion of the bar 18 on the knob 3 side (left side). The second elevating guide 182 includes a protruding portion that protrudes upward from the upper surface of the bar 18 on the opposite side (right side) of the knob 3 slightly from the center. The first lifting guide 181 is accommodated in the first lift part 163 of the groove plate 16. The second lifting guide 182 is accommodated in the second lift part 164 of the groove plate 16. The first elevating guide 181 and the second elevating guide 182 are T-shaped in a side view, and the lower surface is formed in a semicircular shape in a front view so that the first elevating guide 181 and the second elevating guide 182 can easily move in the first lift portion 163 and the second lift portion 164. Yes. The dial spring control recess 183 is a recess formed in the front of the bar 18. The dial spring control recess 183 is formed at four locations, and the protrusion 131 of the dial spring 13 is accommodated in each of them.

  The L plate 19 constitutes a part of the drive unit of the present invention and is interposed between the groove plate 16 and the slide plate 8. Here, further explanation will be made with reference to FIG. FIG. 27 is a perspective view of the L plate according to the first embodiment. The L plate 19 is made of an L-shaped plate, and has a through-hole 191, a long side tip 192, and a short side tip 193. The through hole 191 is a circular through hole formed at a corner of the L plate 19, and the shaft portion 1 b protruding from the housing 1 is inserted therethrough. The long side tip 192 contacts the protruding piece 84 of the slide plate 8. The short side tip 193 abuts on the protrusion 162 of the groove plate 16.

  The stopper 20 is made of a rectangular plate, is fixed to the drive shaft 22, rotates in conjunction with the knob 3, and engages with the mating engagement portion 26 (see FIGS. 28 and 45).

  The drive shaft 22 engages with the cylinder 6 and rotates in conjunction with the knob 3. Here, further explanation will be made with reference to FIG. FIG. 28 is a front perspective view of the drive shaft according to the first embodiment. The drive shaft 22 includes a cross-shaped concave portion 221, a shaft portion 222, a table portion 223, and a search arm 224. The cross-shaped concave portion 221 is formed at the front end portion, and engages with a cross-shaped convex portion 62 provided on an end surface (end surface on the back side) opposite to the key insertion hole 61 of the cylinder 6. The shaft portion 222 passes through the housing 1 through the through hole 1j of the housing 1. A screw thread is formed on the shaft portion 222, and the stopper 20 can be fixed by a nut. The shaft portion 222 is formed so as to extend from the center of the table portion 223 having a flat surface to the back side. The table portion 223 is formed as a flat portion so that the stopper 20 can be stably held. The search arm 224 protrudes from the side of the drive shaft 22 and contacts the search operation unit 113 of the number search plate 11 when rotated to a certain angle.

  The indicator 23 displays the unlocked and locked state of the dial lock A. Here, FIG. 29, FIG. 30A, FIG. 30B, and FIG. FIG. 29 is a perspective view of the front side of the indicator according to the first embodiment. FIG. 30A is a front view showing the relationship between the cylinder and the indicator. FIG. 30B is a front view showing the relationship between the front panel, the cylinder, and the indicator in the locked state and the unlocked state. FIG. 31 is a perspective view of the indicator spring according to the first embodiment. The indicator 23 includes a main body portion 231, a fan portion 232, a notch portion 233, and an indicator spring 235. The main body 231 has a ring shape with a diameter slightly larger than the diameter of the outer periphery 53 of the sleeve 5. The fan part 232 is formed by a panel formed on the upper part of the main body part 231, and two colors for printing the unlocked and locked state of the dial lock A are printed. The notch 233 is formed so that the inner lower portion of the main body 231 is notched. In other words, the notch 233 is formed to be slightly larger than the outer diameter of the main body 231. The range of the notch 233 is indicated by the arrow 234 in FIG. The indicator spring 235 has a straight portion and folded portions formed at both ends of the straight portion. A folded portion at one end (right end) of the indicator spring 235 is fixed to the through hole 174 a of the middle plate 17. The folded portion at the other end (left end) of the indicator spring 235 is accommodated in the elongated hole 174 of the middle plate 17 so as to be movable.

  The number search key 24 is inserted into the hole 31 of the knob 3 when performing a number search. FIG. 32 is a side view of the number search key according to the first embodiment. The number search key 24 has a grip 242 and a peak 241 formed on the tip side.

  The inner cylinder replacement key 25 is inserted into the hole 31 of the knob 3 when the inner cylinder is replaced. FIG. 33 shows the relationship between the inner cylinder replacement key and the cylinder according to the first embodiment. The inner cylinder replacement key 25 has a grip 252, a mountain formed on the tip side, and a tip 251 that reaches the innermost part 65 of the tamper groove 64.

<Operation>
Next, while supplementing the configuration of “movement at unlocking”, “movement at locking”, “indicator movement”, “movement at number setting”, and “number search / inner cylinder replacement movement” explain.

<< Movement when unlocking >>
First, the movement when unlocking the dial lock A will be described. As shown in FIGS. 1 to 6 and the like, the dial lock A is in a locked state before unlocking (FIGS. 1 to 6 all show a locked state). The knob 3 is in the locked position, the indicator 23 displays red, and the dial 4 displays “0000”. Here, FIG. 34A is a perspective view showing the relationship between the knob, the arm, and the sleeve in the locked state. In the locked state, the distal end 125 of the arm portion 124 of the arm 12 is in a positional relationship in contact with the rotation restricting portion 51 protruding from the outer peripheral surface of the sleeve 5, and the sleeve 5 is restricted from rotating in the unlocking direction. As shown in FIG. 34B, the cylinder 6 is detachably inserted into the sleeve 5, and the sleeve 5 and the cylinder 6 are rotated together unless a number search key 24 and an inner cylinder replacement key 25 described later are inserted into the cylinder 6. Move. Since the knob 3 is detachably fitted in the cylinder 6, as a result, the user cannot rotate the knob 3 in the unlocking direction during locking.

  When unlocking the dial lock A, the user needs to align the dial 4 displayed as “0000” with the unlock code. For example, when the unlock code is “1234”, the dial 4 is rotated to display the unlock code. For example, as shown in FIGS. 3, 5, etc., in the locked state, the gear portion 42 of the dial 4 is engaged with the gear portion 71 of the wheel 7, so that when the user rotates the dial 4, the wheel 7 Both rotate. The gear portion 42 of the dial 4 and the gear portion 71 of the wheel 7 are fitted so that the V-shaped groove portion 72 of the wheel 7 comes to a predetermined position when the unlocking code “1234” of the dial 4 is displayed. The predetermined position is a position where the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 fits into the V-shaped groove portion 72 of the wheel 7, and all the V-shaped groove portions 72 of the four wheels 7 are below. It is in a state. Further, the tip V-shaped convex portion 811 of the protruding wall 81 rising at equal intervals from the slide plate 8 is in contact with the side surface on the V-shaped groove portion 72 side in the vertical direction from the center of the circle of the wheel 7 (see FIG. 7). .

  Here, FIG. 35 is a perspective view showing the relationship among the wheel, slide plate, arm, and boat in the locked state. When the V-shaped groove portion 72 of the wheel 7 is aligned at a predetermined position (when the V-shaped groove portion 72 of the wheel 7 is at the bottom), the tip V-shaped convex portion 811 of the protruding wall 81 rising from the slide plate 8 at equal intervals is formed. And fit into the V-shaped groove 72. Then, the slide plate 8 slides leftward. At this time, the slide plate 8 slides by a slide plate spring 822 between the housing 1 (not shown in FIG. 35) and the first spring receiving portion 82 of the slide plate 8. An arm pushing portion 83 is provided on the opposite side (left side) of the first spring receiving portion 82, and a columnar 831 protrudes from the arm pushing portion 83 (see FIG. 14). A second spring receiving portion 832 is provided at the tip of the columnar 831.

  When the slide plate 8 slides leftward, the arm pushing portion 83 pushes the long hole portion 122 of the arm 12. The arm 12 rotates around the shaft portion 1 a protruding from the housing 1 by the arm pushing portion 83 of the slide plate 8 pushing the elongated hole portion 122 of the arm 12 leftward. Thereby, the tip 125 of the arm portion 124 protruding in the direction opposite to the long hole portion 122 of the arm 12 moves in the right direction, in other words, a position where it contacts the rotation restricting portion 51 protruding from the outer peripheral surface of the sleeve 5. The relationship is displaced. As a result, the sleeve 5 can be rotated (right rotation) (see FIG. 34A).

  Here, FIG. 36A is a perspective view showing the relationship among the sleeve, the connector, the groove plate, the L plate, the slide plate, and the arm in the locked state. FIG. 36A is a rear perspective view. The sleeve 5 has a cylindrical shape with a through-hole, and a connecting convex portion 52 that fits the connector 14 is provided on the lower end side (rear side). The connecting projection 52 is also cylindrical, and is slightly smaller than the body hole 141 of the connector 14 and is inserted through the body hole 141 of the connector 14. Further, the connector 14 is provided with a C-shaped portion 142 (see FIG. 20), and this C-shaped portion 142 is fitted to a groove connect 161 (see FIGS. 22, 23, and 24) of the groove plate 16. Yes. The groove connect 161 has a slightly smaller diameter than the C-shape because it fits with the C-shaped portion 142 of the connector 14.

  Since the sleeve 5 can be rotated, when the user rotates the knob 3 in the unlocking direction, as described above, the cylinder 6 and the sleeve 5 in the fitted state are both rotated rightward. At this time, the position of the connecting convex portion 52 of the sleeve 5 is displaced so as to draw an arc in accordance with the rotation of the sleeve 5. Then, the connector 14 slides to the right as the main body hole 141 of the connector 14 is pushed by the connecting convex portion 52. Further, since the C-shaped portion 142 (see FIG. 20) of the connector 14 is fitted with the groove connect 161 (see FIGS. 22, 23, and 24) of the groove plate 16, the C-shaped portion 142 of the connector 14 The groove plate 16 slides to the right as it is pushed.

  The substantially U-shaped projecting portion 162 formed on the back side of the groove plate 16 abuts on the short-side tip portion 193 of the L plate 19 as the groove plate 16 slides in the right direction. When the protrusion 162 of the groove plate 16 abuts on the short side tip 193 of the L plate 19, the L plate 19 rotates so as to be pushed down by the protrusion 162 of the groove plate around the shaft 1 b protruding from the housing 1. As a result of this rotation, the tip 192 on the long side of the L plate 19 pushes the protruding piece 84 of the slide plate 8 in the direction opposite to the direction in which the urging force of the slide plate spring 822 acts, that is, in the right direction. The tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 in the fitted state is disengaged from the V-shaped groove portion 72 in the vertical direction from the center of the circle of the wheel 7.

  The sleeve 5 continues to rotate, and the groove plate 16 continues to slide in the right direction. FIG. 36B is a bottom cross-sectional view showing the relationship among the bar, the comb, the groove plate, and the dial spring in the locked state and the unlocked state. When the groove plate 16 slides in the right direction, the first lift guide 181 of the bar 18 incorporated in the first lift portion 163 and the second lift portion 164 of the groove plate moves to 163c (right side of the first lift portion 163). The second elevating guide 182 moves from 164c (high right part) to 164b (low central part) of the second lift part 164 from 163b (low central part) to 163b (low central part). As a result, the bar 18 is lowered, and the position of the dial spring control recess 183 (see FIG. 26) of the bar 18 is displaced downward.

  FIG. 36C is a perspective view showing the relationship between the holder, the comb, and the bar in the locked state. FIG. 36C shows a perspective view from above. A main body 132 of the dial spring 13 has a C-shape (see FIG. 19), and a shaft 151 of the comb 15 is inserted through the center of the C-shaped main body 132. The comb 15 is housed in the comb housing groove 101 of the holder 10, and the displacement of the shaft portion 151 of the comb 15 is suppressed. The holder 10 also accommodates the bar 18 and has the bar accommodating groove 102 so that the bar 18 can operate correctly during the vertical movement. The holder 10 also serves as a guide when the groove plate 16 slides in accordance with the rotation of the sleeve 5 and has a groove guide 103 (see FIG. 41). Since the holder 10 is screwed and fixed to the housing 1 (not shown in FIG. 36C), there is no deviation of the holder 10 itself, and the respective accommodated members can operate accurately and smoothly. When the bar 18 is lowered downward and the position of the dial spring control recess 183 (see FIG. 26) is displaced downward, the projection 131 (see FIG. 19) of the dial spring 13 accommodated in the dial spring control recess 183 is lowered. When pressed, the dial spring 13 rotates around the shaft portion 151 of the comb 15.

  Here, the arm part 133 extends from the C-shaped main body part 132 to the rotated dial spring 13, and a claw part 134 is provided at the tip thereof. The claw part 134 is fitted in the valley part 42 a of the gear part 42 of the normal dial 4. Here, FIG. 37A is a cross-sectional view showing the relationship between the dial and the dial spring. FIG. 37B shows a state where the tip V-shaped convex portion of the protruding wall of the slide plate is fitted in the V-shaped groove portion of the wheel and a state where it is detached from the V-shaped groove. Usually, when the claw part 134 is fitted into the trough part 42a of the gear part 42 of the dial 4, a feeling (click feeling) when the dial 4 is rotated is born. The dial spring 13 is rotated so that the claw portion 134 is separated from the valley portion 42 a of the gear portion 42 of the dial 4. As a result, the dial 4 is in a free state B with no touch (click feeling) in rotation. In the free state B, the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 is disengaged from the V-shaped groove portion 72 of the wheel 7 (see FIG. 37B), and from the trough portion 42a of the gear portion 42 of the dial 4. The state in which the claw part 134 of the dial spring 13 is separated is indicated.

  The sleeve 5 continues to rotate, and when the free state B is reached, the comb 15 is seen to move almost simultaneously. Specifically, the runner 153 of the comb 15 is engaged with the wave rail 165 of the groove plate 16 (see FIG. 36B). Therefore, when the groove plate 16 slides in the right direction, the runner 153 of the comb 15 moves along the wave rail 165 along the wave rail 165 of the groove plate 16. As a result, the comb 15 rotates around the shaft portion 151 and the main body portion 152 of the comb 15 and the arm portion 154 approaches the return portion 43 of the dial 4 (see FIG. 38A).

  When the comb 15 rotates, the arm portion 154 comes into contact with the return portion 43 of the dial 4 and pushes the side surface of the return portion 43. The return part 43 has a biased shape such as a lotus petal or a water droplet. This deviation is for returning the dial 4 at the shortest distance when returning to the return code. The shortest distance is, for example, the number “5” positioned directly behind “0” of the dial 4. The numbers next to “5”, ie, “4” and “6” to rotate to “0”, “4” is the direction in which the number is negative, “6” is the direction in which the number is positive, and so on. This is a distance that is rotated and efficiently returned to “0”. By the way, “5” rotates in the same direction as “6”. When the arm portion 154 of the comb 15 is pushed down until it reaches the root 431 of the return portion 43, the dial 4 returns to “0”.

  Thereafter, as the sleeve 5 rotates, the groove plate 16 slides in the right direction so that the wave rail 165 of the groove plate 16 is traced by the runner 153 of the comb 15 and the wave rail 165 by the reverse movement to that described above. Move along. The arm portion 154 of the comb 15 rotates in a direction away from the return portion 43 of the dial 4. Briefly describing a series of movements of the runner 153, the runner 153 on the knob 3 side (left side) starts from 165c of the wave rail 165 and reaches 165a through 165b (see FIG. 36B). Although the other runner 153 has a different start position such that the wave rail 165 has a start position 165c, the wave rail 165 has no change in the movement of the peaks, valleys, and peaks of the 165c, 165b, and 165c.

  When the arm portion 154 of the comb 15 is completely separated from the return portion 43 of the dial 4 and returns to the original position, the contact between the substantially U-shaped protruding portion 162 of the groove plate 16 and the L plate 19 is released substantially simultaneously. Then, the L plate 19 rotates around the shaft portion 1 b protruding from the housing 1. This rotational force is due to the urging of the slide plate spring 822, and is generated when the projecting piece 84 of the slide plate 8 pushes the long side tip 192 of the L-shaped plate.

  When the contact between the substantially U-shaped protrusion 162 of the groove plate 16 and the L plate 19 is released and the L plate 19 rotates, the slide plate 8 slides leftward, but the dial 4 has a return code. Since it has returned to a certain “0”, the V-shaped groove portion 72 of the wheel 7 is not aligned at a predetermined position. That is, the V-shaped groove 72 of the wheel 7 does not come down. Therefore, the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 does not fit into the V-shaped groove portion 72 and is in contact with the side surface of the wheel 7 on the V-shaped groove portion 72 side (see FIG. 38B). reference). FIG. 38B shows a state in which the tip V-shaped convex part of the protruding wall of the slide plate is not fitted into the V-shaped groove part of the wheel and is in contact with the side surface on the V-shaped groove part side.

  Further, when the arm portion 154 of the comb 15 is completely separated and returned to the original position, the first lift guide 181 of the bar 18 incorporated in the first lift portion 163 and the second lift portion 164 of the groove plate 16. The second lift guide 182 extends from 164b (center lower portion) to 164a (lower center portion) of the first lift portion 163 of the groove plate 16 from 163b (lower center portion) to 163a (left upper portion). Respectively (refer to FIG. 36B). Then, the bar 18 is lifted upward again, and the position of the dial spring control recess 183 (see FIG. 26) of the bar 18 is displaced upward. Along with this, the convex portion 131 of the dial spring 13 accommodated in the dial spring control concave portion 183 is pulled upward, and the claw portion 134 of the dial spring 13 centered on the shaft portion 151 of the comb 15 again becomes the gear portion 42 of the dial 4. The claw part 134 of the dial spring 13 fits in the trough part 42a of the gear part 42 of the dial 4 (see FIG. 37A).

  When the knob 3 is rotated to the unlocked position by the user, the connector 14, the comb 15, the dial spring 13, the groove plate 16, the slide plate 8, the bar 18, and the L plate are internally attached to the cylinder 6 and the sleeve 5. A series of 19 movements are completed and unlocked in an internal mechanism.

  Here, FIG. 39 is a cross-sectional view showing the relationship among the knob, the cylinder, and the drive shaft in the locked state. FIG. 40 is a longitudinal sectional view showing the relationship among the knob, the cylinder, and the drive shaft in the locked state. FIG. 41 is a front perspective view showing the relationship among the knob, dial, slide plate and the like in the unlocked state. A cross-shaped convex portion 62 provided on an end surface (end surface on the back side) opposite to the key insertion hole 61 of the cylinder 6 is engaged with a cross-shaped concave portion 221 of the drive shaft 22. The cross-shaped convex part 62 and the cross-shaped concave part 221 need only be engaged, and the shape may be, for example, a circle and is not limited to a cross. The drive shaft 22 is provided with a shaft portion 222 that penetrates the housing 1. The shaft portion 222 is formed with a screw thread, functions as a bolt, and can receive a nut. In addition, a table portion 223 is provided at the root of the shaft portion 222, and the table portion 223 also penetrates the housing 1. The stopper 20 is installed on the flat surface of the table portion 223, and the stopper 20 is fixed to the drive shaft by fitting a nut on the shaft portion 222 described above. Although the nut is used in the first embodiment, it may be screwed. When the user rotates the knob 3, both the drive shaft 22 engaged with the cylinder 6 and the stopper 20 fixed to the drive shaft 22 rotate in the same direction. The stopper 20 is disengaged from the mating engagement portion 26 of the casing, and is unlocked from an external mechanism.

<< Movement during locking >>
Next, the movement at the time of locking the dial lock A will be described. In locking, the dial lock A is in the unlocked state, and the dial 4 is displayed as “0000” as described above. The user can lock the dial 3 by rotating the knob 3 in the locking direction without operating the dial 4. The movement at the time of unlocking is as described above, and the movement at the time of locking is the reverse of the movement at the time of unlocking. Therefore, the movement during unlocking will be briefly described below.

  Supplementing the movement of the bar 18 and the comb 15, the first lifting guide 181 of the bar 18 moves from 163 a to 163 c of the first lift portion 163 of the groove plate 16, and the second lifting guide 182 The portion 164 moves from 164a to 164c. Further, the runner 153 of the comb 15 moves from 165a to 165c of the wave rail 165 of the groove plate 16 (see FIG. 36B).

  When unlocking, since the unlocking code is not displayed, the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 does not fit into the V-shaped groove portion 72 of the wheel 7 and the V-shaped groove portion 72 side. (See FIG. 38B). That is, the slide plate 8 is in a position slid in the right direction. Further, in addition to the sliding of the slide plate 8 in the right direction, the arm 12 rotates counterclockwise around the shaft portion 1a protruding from the housing 1 by the urging of the arm spring 126 (see FIG. 35).

  Such rotation of the arm 12 is reverse to the rotation at the time of unlocking. In other words, the arm 12 rotates in a direction in contact with the rotation restricting portion 51 (see FIG. 34A) protruding from the outer peripheral surface of the sleeve 5. There is a position where the rotation restricting portion 51 protruding from the outer peripheral surface and the arm portion 124 of the arm 12 come into contact with each other before becoming the locking position for completely restricting the rotation in the process in which the sleeve 5 rotates to the locking position. At this time, the arm 12 can easily get over the rotation restricting portion 51 due to the oblique side 51 a provided in the rotation restricting portion 51. The arm 12 rotates again in a direction to come into contact with the rotation restricting portion 51 by the urging of the arm spring 126 (see FIG. 43), and comes into contact with the rotation restricting portion 51 that has reached its locking position and its rotation is restricted. .

<< About the indicator >>
The dial lock A is provided with an indicator 23 for displaying the unlocked / locked state so that the unlocked / locked state can be easily distinguished. The indicator 23 rotates in conjunction with the rotation of the cylinder 6 and displays the unlocked / locked state. This will be described in more detail below. As shown in FIG. 29, the main body portion 231 of the indicator 23 is provided with a notch portion 233 at the lower portion, and the notch portion 233 has a diameter that is one size larger than portions other than the notch portion 233. ing. The diameter of the notch 233 is slightly larger than the rotation protrusion 63 of the cylinder 6. As shown in FIGS. 30A and 30B, the notch 233 allows the rotation protrusion 63 of the cylinder 6 to rotate and contacts the rotation protrusion 63 of the cylinder 6 to rotate the indicator 23. 30A and 30B, the first side surface 631 (right side) of the rotating projection 63 of the cylinder 6 is in contact with the notched side surface 233b (right side) of the notched portion 233 of the indicator 23 in the locked state. ing. At that time, the red of the fan portion 232 indicating the locked state is displayed on the display window 2a of the front panel 2. When the knob 3 is rotated in the unlocking direction (clockwise), the cylinder 6 and the sleeve 5 rotate together (see FIG. 34B). The first side surface 631 (right side) of the rotating projection 63 of the cylinder 6 is separated from the notched side surface 233b (right side) of the notched portion 233 of the indicator 23, and the second side surface 632 (left side) of the rotating projection 63 of the cylinder 6 is The notch side 233a (left side) of the notch 233 of the indicator 23 is approached. In the first embodiment, the notch angle 234 of the notch 233 is about 72 degrees, and when the cylinder 6 is rotated 72 degrees clockwise from the locked state, the second side surface 632 (the left side of the rotation protrusion 63 of the cylinder 6 is left). ) Is in contact with the notched side surface 233a (left side) of the notched portion 233 of the indicator 23. Further, when the cylinder 6 is rotated by the clockwise rotation of the knob 3, the indicator 23 has a notch side 233 a (left side) of the notch 233 on a second side 632 (left side) of the rotation protrusion 63 of the cylinder 6. When pressed, it rotates clockwise. That is, the rotation protrusion 63 of the cylinder 6 rotates beyond the notch angle 234 of the notch 233 of the indicator 23. Here, the rotation of the sleeve 5 is restricted by the rotation restriction receiving portion 56 (see FIG. 44) of the sleeve 5 and the rotation restriction protrusion 1k (see FIG. 7A) of the housing 1 being in contact with each other. In the first embodiment, the rotation restriction receiving portion 56 is cut away so that the rotation angle of the sleeve 5 is about 90 degrees. Therefore, when the knob 3 in other words, the cylinder 6 and the sleeve 5 are rotated 90 degrees clockwise, the end portion 56a of the rotation restricting receiving portion 56 and the rotation restricting projection 1k of the housing 1 are in contact with each other, and the rotation is restricted and unlocked. It becomes. In the unlocked state, as shown in the lower diagram of FIG. 30B, the blue of the fan portion 232 indicating the unlocked state is displayed on the display window 2a of the front panel 2. When shifting from the unlocked state to the locked state, when the knob 3 is rotated 72 degrees in the locking direction (counterclockwise), the first side surface 631 (right side) of the rotating protrusion 63 of the cylinder 6 is notched in the indicator 23. It contacts the notch side surface 233b (right side) of 233. Further, when the cylinder 6 is rotated by rotating the knob 3 counterclockwise, the indicator 23 has a notch side 233b (right side) of the notch 233 on a first side surface 631 (right side) of the rotation projection 63 of the cylinder 6. Rotates when pressed. When the rotation of the sleeve 5 is restricted by contact between the end 56b (see FIG. 44) of the rotation restriction receiving portion 56 of the sleeve 5 and the rotation restriction protrusion 1k (see FIG. 7A) of the housing 1, the locked state It becomes. At that time, the red of the fan portion 232 indicating the locked state is displayed on the display window 2a of the front panel 2. In addition, red and blue of the fan part 232 are examples, and the color of the fan part 232 is not limited to these.

  Here, as shown in FIG. 9, on the back side of the front panel 2, an indicator recess for receiving the fan portion 232 of the indicator 23 and guiding the rotation of the fan portion 232 of the indicator 23 when the indicator 23 rotates. 2f is provided. The indicator recess 2f is configured by a curved strip-shaped recess. The indicator recess 2f is formed longer on the right side than on the left side with respect to the display window 2a for the following reason. As described above, the rotation protrusion 63 of the cylinder 6 rotates beyond the notch angle 234 of the notch 233 of the indicator 23. Then, when the knob 3 is rotated 90 degrees clockwise from the unlocked position, that is, when the knob 3 is rotated from the locked state, the rotation of the sleeve 5 that rotates together with the cylinder 6 is restricted, so that the rotation of the cylinder 6 is also restricted. At that time, the blue of the fan 232 indicating the unlocked state is displayed on the display window 2a of the front panel 2. However, when performing a number search, insertion of the number search key 24 eliminates interference between the inner wall 57 of the sleeve 5 and the side surface 273 of the tamper 27 (see FIGS. 47 and 48). Therefore, the cylinder 6 can be rotated independently (number search will be described later), and the rotation protrusion 63 of the cylinder 6 further rotates beyond the unlocking position of the knob 3. The indicator 23 further rotates clockwise because the notched side surface 233a (left side) of the notched portion 233 is pushed by the second side surface 632 (left side) of the rotating projection 63 of the cylinder 6. In order to allow such rotation when searching for numbers, the indicator recess 2f is formed so that the right side is longer than the left side with respect to the display window 2a. In addition, when the rotation protrusion 63 of the cylinder 6 further rotates beyond the unlocking position of the knob 3, the fan portion 232 of the indicator 23 passes through the display window 2a of the front panel 2. Therefore, the color of the fan portion 232 indicating the locked state or the unlocked state is not displayed on the display window 2a of the front panel 2. About the relationship between the rotation protrusion 63 and the notch angle 234, it may be an angle different from 1st Embodiment, and is not limited to this description.

  Most of the outer periphery 53 of the sleeve 5 is held and fixed in the sleeve accommodating portion 175 of the middle plate 17. The indicator 23 is positioned so that the main body 231 is fitted to the outer periphery 53 of the sleeve 5, but at the same time is sandwiched between the middle plate 17 and the knob 3. Thereby, the indicator 23 can always keep a certain distance from the open / close display window 2a of the front panel 2. The middle plate 17 has a long hole 174 that passes through the middle plate 17, and a substantially circular through hole 174 a is formed on the dial 4 side of the long hole 174. An indicator spring 235 is attached to the elongated hole 174 and the through hole 174a. The indicator spring 235 is a thin wire-like member and is bent at both ends in a substantially U shape. Further, the diameter of the indicator spring 235 is slightly smaller than the diameter of the through hole 174a of the middle plate 17, and is inserted into the through hole 174a, so that the positioning is simple. The end of the indicator spring 235 opposite to the through hole 174a is inserted because the diameter of the indicator spring 235 is slightly smaller than the width of the elongated hole 174 of the middle plate 17, but the middle plate 17 is inserted in a substantially circular shape. There is no such thing as positioning like the hole 174a.

  The indicator spring 235 protrudes forward from the front surface of the middle plate 17 at a position substantially in the middle of the long hole 174 of the middle plate 17. As a result, the indicator 23 and the indicator spring 235 slightly interfere with each other. As a result, a load can be applied to the indicator 23, and the indicator 23 can be prevented from rotating accidentally. The middle plate 17 is fixed in a state where the concave corners 171 arranged at a predetermined interval on the back surface and the convex corners 104a of the arms 104 of the holder 10 are fitted together. The middle plate 17 accommodates the dial 4. The dial 4 has a through hole 44 at the center, and the dial shaft 212 can be inserted therethrough. The dial accommodating portion 172 of the middle plate 17 can accommodate a set of dials 4 through which the dial shaft 212 is inserted (in the embodiment, the number of dials 4 is four, but the number of dials 4 is not limited). The dial shaft fixing wall 2b rises from the front panel 2 and the tip 2c is U-shaped.

  The tip 2c has a role of holding and fixing the dial shaft 212 when the front panel 2 is assembled. The tip 2c has a slightly larger diameter than the radius of the dial shaft 212. Further, when the front panel 2 is assembled, the circular convex portions 173 of the middle plate 17 are fitted into the circular concave portions 2d arranged at equal intervals on the front panel 2, and the middle plate 17 is a holder on the front panel 2 on the front side and on the rear side. 10 and the fitting position are determined. Incidentally, the front panel 2 is designed such that a columnar 2e rising from three places comes into contact with the column 1h of the housing 1 and the end surfaces. Each cylinder has a donut shape with a hollow inside, and the housing 1 and the front panel 2 are fixed by screwing. In the dial 4, the dial shaft 212 is held and fixed by a U-shaped 2 c formed of a U-shaped recess formed at the tip of the dial shaft fixing wall 2 b of the front panel 2. As a result, the up / down / left / right movement of the dial 4 is restricted.

<< Operation when setting number >>
The dial lock A according to the first embodiment allows the user to set (change) an arbitrary number (corresponding to the unlocking code of the present invention, hereinafter also referred to as a setting number) before use. The setting number is not changed until the next number setting. The number can be set only when the dial lock A is unlocked and the set number is displayed. For example, when the setting number is “1234”, the dial 4 is rotated to display “1234” and the knob 3 is rotated in the unlocking direction. In this case, the dial 4 returns to “0000”. Therefore, the setting number can be changed by displaying the setting number “1234” again, confirming that the position of the stopper 20 is unlocked, and then sliding the number setting switch 91 on the back. .

  Here, FIG. 42 is a sectional view showing the relationship between the boat and the dial. FIG. 43 is a rear perspective view showing the relationship between the boat and the wheel. FIG. 44 is a rear perspective view showing the relationship between the boat, wheel, dial, and the like. FIG. 45 is a rear perspective view showing the relationship among the number search plate, wheel, dial, and the like. As shown in the above drawings and FIG. 4, the number setting switch 91 is provided on the back surface of the boat 9 and slides in the left-right direction together with the boat 9. On the opposite side (right side) of the number setting switch 91, a first corner recess 93 and a second corner recess 94 are separated by a thin wall. The first corner recess 93 is provided with an inclined side 931 that is partially inclined. Before the number setting switch 91 is slid rightward (leftward when viewed from the back side), the tip of the boat stopper 1c of the housing 1 enters the first corner recess 93. When the number setting switch 91 is slid in the right direction (leftward when viewed from the back side), the boat stopper 1c gets over the inclined side 931 of the first corner recess 93 and enters the second corner recess 94. When the boat stopper 1c that has entered the second corner recess 94 comes into contact with the wall surface 941 of the second corner recess 94, the boat 9 is held in the slid position.

  Here, when the number setting switch 91 is slid in the right direction (left direction when viewed from the back side), the entire boat 9 is slid in the right direction. The wheel 7 is fixed to the boat 9 via a wheel fixing portion 92. That is, when the number setting switch 91 is slid rightward (leftward when viewed from the back side), the wheel 7 is also slid rightward. On the other hand, the wheel 7 is engaged with the dial 4, and the position where the setting number “1234” is displayed corresponds to a predetermined position of the square hole through hole 73 of the wheel 7.

  The predetermined position of the square hole through hole 73 of the wheel 7 is a position where the square hole through hole 73 of the wheel 7 slid rightward is engaged with the tip 112 of the prism 111 of the number search plate 11 (see FIG. 45). reference). In other words, the predetermined position of the square hole through-hole 73 of the wheel 7 is a position where the square hole through-hole 73 of the wheel 7 is on the top. Therefore, when changing the setting number, it is necessary to display the setting number “1234”. In addition, when the square hole through-hole 73 of the wheel 7 is in a predetermined position, the V-shaped groove 72 is always in a predetermined position (down). Further, the notched portion 76 of the wheel 7 cut out in a substantially U-shape is also in a predetermined position (rear). The substantially U-shaped notch 76 is fitted with a rising portion 1 g that rises from the housing 1. Thereby, the erroneous rotation of the wheel 7 is prevented.

  In addition, the slide plate 8 slides to the right as it is pulled by the wheel 7 and the wheel 7 along with the slide of the boat 9. At this time, the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 slides rightward while maintaining the state of being fitted in the V-shaped groove portion 72 of the wheel 7. The slide plate 8 after the slide is the same as the unlocked state “0000”. That is, the arm 12 is moved to the housing 1 by the bias of the arm spring 126 assembled between the second spring receiving portion 832 at the tip of the columnar 831 extending from the arm pushing portion 83 and the elongated hole portion 122 of the arm 12. It is going to rotate centering on the axial part 1a which protruded from (refer FIG. 35). If the knob 3 is accidentally rotated at this time, there is a possibility that a malfunction may occur in which the internal mechanism is locked although the number is not correctly set. Therefore, in order to prevent such a problem, when the boat 9 slides, the arm portion 96 pulls the rib 127 (see FIG. 18B) of the arm 12, and the tip 125 of the arm portion 124 of the arm 12 and the rotation restricting portion 51 of the sleeve 5. And a position where they do not contact each other (see FIG. 44). The engagement between the dial 4 and the wheel 7 is released by sliding the boat 9.

  When the user rotates the dial 4 to display a new setting number, for example, “5678” and presses the setting number confirmation button 1d on the back side, the boat stopper 1c on the opposite side is lifted up like a seesaw. Then, the contact between the boat stopper 1c and the wall surface 941 of the second corner recess 94 is released, and the boat 9 returns to the position before sliding by the urging of the boat spring 95. In other words, the boat 9 slides to the left. The boat spring 95 is located between the number setting switch 91 that is a prism and the switch accommodating portion 1e of the housing 1, and always urges the boat. When the boat 9 returns to the position before sliding, the gear portion 42 of the dial 4 and the gear portion 71 of the wheel 7 are engaged again. At this time, the engagement between the tip 112 of the prism 111 of the number search plate 11 and the square hole through-hole 73 of the wheel 7 is released. On the other hand, the slide plate 8 slides to the left while the tip V-shaped convex portion 811 of the protruding wall 81 of the slide plate 8 is fitted in the V-shaped groove portion 72 of the wheel 7 by the bias of the slide plate spring 822. The number setting is completed by a series of these movements. When the unlock code and the return code are the same number, the function of returning the dial 4 does not work. Therefore, when the unlock code and the return code are the same number, locking cannot be performed. However, the stopper 20 can be operated by opening and closing the knob 3.

<< Number search / Inner cylinder exchange >>
Next, a description will be given of a function for searching for a number when unlocking becomes impossible because the user forgets the set number. FIG. 46 shows a cross-sectional view of the cylinder. FIG. 47 is a cross-sectional view illustrating the relationship between the number search key 24 and the cylinder. FIG. 48 is a cross-sectional view showing the relationship between the sleeve and the cylinder when the number search key is used.

  By inserting the dedicated number search key 24 into the key insertion hole 31 of the knob 3, the number search key 24 is inserted into the key insertion hole 61 of the cylinder 6 through the knob 3. Then, the number retrieval key 24 is accommodated inside the cylinder 6 because the mountain receiving portion 271 of the tamper 27 incorporated in the tumbler groove 64 of the cylinder 6 matches the mountain 241 of the number retrieval key 24. In a state where the number search key 24 is not inserted, the tamper 27 is lifted by the spring 272, and the side surface 273 of the lifted tamper 27 is in contact with and interferes with the inner wall of the sleeve 5. Single rotation is regulated. By inserting the number retrieval key 24, the interference between the inner wall of the sleeve 5 and the side surface 273 of the tamper 27 is eliminated, and the cylinder 6 can be rotated.

  When performing a number search, after inserting the number search key 24, the number search key 24 is rotated in the unlocking direction. When the knob 3 is moved beyond the unlocking position and further rotated, the cross-shaped convex portion 62 provided on the end surface of the cylinder 6 opposite to the key insertion hole 61 is engaged with the cross-shaped concave portion 221 of the drive shaft 22. As a result, the drive shaft 22 (see FIG. 28) further rotates. A search arm 224 extends from the drive shaft 22. When the search arm 224 rotates to a certain angle, the search arm 224 contacts the search operation unit 113 of the number search plate 11, and further rotates to slide the number search plate 11 to the left. (See FIG. 45). When the number search plate 11 slides to the left, the tip 112 of the prism 111 of the number search plate 11 engages with the square hole through hole 73 of the wheel 7.

  For example, when the correct setting number is “5678” and the displayed number is “1234”, the number search key 24 is inserted and rotated to the unlocked position. Then, the stopper 20 engaged with the cylinder 6 also rotates to the unlocked position, and the engagement with the mating engagement portion 26 of the housing is released. Thus, the number search key 24 also has an emergency unlocking function. At this stage, the contents stored in the housing can be taken out. By further rotating, the tip 112 of the prism 111 of the number search plate 11 is brought into a position where it engages with the square hole through hole 73 of the wheel 7. At this time, when the dial 4 is rotated from the bottom to the top and the correct setting number, for example, the left end “5” is displayed, the tip 112 of the prism 111 enters the square hole through-hole 73 of the wheel 7 and engages. Then, the rotation of the dial 4 stops. Similarly, “678” is displayed, the number search key 24 is returned to the locking position, and the number search key 24 is pulled out. When the displayed “5678” is stored and the knob 3 is rotated to the unlocked position by the user and unlocked, the number search is completed. The number search plate 11 is always applied with the urging force of the number search plate spring 114 in the right direction. Therefore, when the number search is completed, the number search plate 11 slides to the right and returns to the original position.

  Next, the function of replacing the cylinder 6 using the inner cylinder replacement key 25 will be described. Here, FIG. 49 is a cross-sectional view showing the relationship between the sleeve and the cylinder when the inner cylinder replacement key is used. The inner cylinder replacement can be performed in the locked state, that is, when the knob 3 is in the locked position. In a state other than the locked state, it is necessary to rotate the cylinder 6 counterclockwise after inserting the inner cylinder replacement key 25 to enter the locked state. Inserting the inner cylinder replacement key 25 into the key insertion hole 31 of the knob 3 eliminates the interference with the sleeve 5 and enables the cylinder 6 to rotate as in the case where the number search key 24 is inserted (see also FIG. 33). ). The tip 251 of the inner cylinder replacement key 25 pulls down the stopper tamper 28 incorporated in the innermost portion 65 of the tamper groove 64 viewed from the key insertion hole 61 of the cylinder 6. As a result, in the stopper tamper 28, the upper part 282 protrudes from the cylinder 6 instead of the lower part 281 being accommodated in the cylinder 6. The upper part 282 of the stopper tamper 28 is formed to be narrower than the lower part 281 of the stopper tamper 28. A stopper receiving portion 54 is formed on the sleeve 5. When the inner cylinder replacement key 25 is not inserted, the lower portion 281 of the stopper tamper 28 protruding from the cylinder 6 contacts the stopper receiving portion 54 of the sleeve 5. The cylinder 6 is held so as not to come out of the sleeve 5. The stopper receiving portion 54 of the sleeve 5 is partially cut out. The notch 55 is set to be slightly wider than the upper portion 282 of the stopper tamper 28 but is narrower than the lower portion 281. That is, when the inner cylinder replacement key 25 is inserted, the upper part 282 of the stopper tamper 28 protrudes from the cylinder 6 instead of the lower part 281 being accommodated in the cylinder 6. The rotatable cylinder 6 can be pulled out from the sleeve 5 when it is rotated to a position that matches the notch 55 provided in the upper portion 282 of the stopper tamper 28 and the stopper receiving portion 54 of the sleeve 5.

<Effect>
The dial lock A according to the first embodiment is configured so that the comb 15 that engages the groove plate 16 follows the wave rail 165 of the groove plate 16 in conjunction with the slide of the groove plate 16 at the time of unlocking or locking. Move. As a result, the comb 15 rotates about the shaft portion 151 and the main body portion 152 and can move along the side surface of the dial 4. As a result, when the comb 15 is unlocked or locked, the arm portion 154 approaches and comes into contact with the return portion 43 provided on the left side surface of the dial 4, and the dial 4 is returned to the return code (in the first embodiment, “ 0000 "). The dial lock A according to the first embodiment has a comb 15 for finally returning the dial 4 to the return code by devising the configuration, shape, and relative positional relationship of each part including the groove plate 16. The space between the dial 4 and the dial 4 can be effectively utilized and moved to restore the dial 4 to the return code. Therefore, the dial lock A according to the first embodiment does not need to move the dial or the axis of the dial in the axial direction when returning the dial to the return code as in the prior art. Therefore, the dial lock A according to the first embodiment can reduce the length of the dial 4 in the axial direction, in other words, the length in the left-right direction, as compared with the conventional one. it can.

  In the dial lock A according to the first embodiment, the bar 18 incorporated in the groove plate 16 moves in the vertical direction in conjunction with the slide of the groove plate 16 at the time of unlocking or locking. In addition, the dial 18 is brought into contact with the bar 18 so that when the dial 4 is rotated, the dial spring 13 is brought into contact with the gear portion 42 of the dial 4 to generate a click feeling. The dial spring 13 is also connected to a shaft portion 151 of a comb 15 that returns the dial 4 to a return code. As a result, the dial lock A according to the first embodiment generates a click feeling when the dial 4 is rotated, and when the dial 4 is returned to the return code, the dial lock A may be in a free state without the click feeling. it can. And the dial spring 13 can also implement | achieve the function which shifts to a free state, and the function to generate | occur | produce a click feeling effectively using the space between the dial 4 similarly to the comb 15. FIG.

  Moreover, the dial lock A which concerns on 1st Embodiment can discriminate | determine the unlocked state of the dial lock A, and the state of locking easily by providing the indicator 23. FIG. In addition, the dial lock A according to the first embodiment includes a boat 9 having a number setting switch 91, a number search plate 11 and the like, so that a user can use any number (referred to as an unlocking code or a setting number) before use. Can be set (changed). Furthermore, the dial lock A according to the first embodiment can search for the set number in addition to the emergency unlocking by using the number search key 24. Further, the dial lock A according to the first embodiment can replace the cylinder 6 by using the inner cylinder replacement key 25. The dial lock A according to the first embodiment devised the configuration, shape, and relative positional relationship of each component including the groove plate 16, thereby realizing the various functions described above while being small.

Second Embodiment
FIG. 50 is a perspective view of the front side of the dial lock according to the second embodiment. Unlike the dial lock A according to the first embodiment, the dial lock A according to the second embodiment has a configuration that is long in the vertical direction. Hereinafter, the dial lock A according to the second embodiment will be described focusing on differences from the dial lock A according to the first embodiment. About the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is omitted.

  The dial lock A according to the second embodiment is configured to be long in the vertical direction, and the dial lock A according to the first embodiment is rotated clockwise by 90 degrees for configurations other than the differences from the first embodiment. It is a configuration. In the front panel 2, the knob 3 and the dial 4 are arranged side by side in the vertical direction, and an open / close display window 2 a is provided in the upper part of the front panel 2. FIG. 50 shows the unlocked state. In the unlocked state, the stopper 20 points upward and the engagement with the receiving tool is released. Although illustration is omitted, in the locked state, the stopper 20 points in the left direction and engages with the receiving tool. Also in the first embodiment, the stopper 20 points upward in the unlocked state, and the stopper 20 points leftward in the locked state. Although the direction indicated by the stopper 20 is the same, the dial lock A according to the second embodiment is configured by rotating the dial lock A according to the first embodiment 90 degrees clockwise, so that the stopper 20 is fixed. The drive shaft 22 is changed. The stopper 20 is fixed to the shaft portion 222 of the drive shaft 22 by tightening a nut (see FIGS. 28 and 34A). The drive shaft 22 according to the second embodiment has a configuration in which the direction of the shaft portion 222 with respect to the cross-shaped recess 221 is rotated about 90 degrees to the right so that the same stopper 20 as in the first embodiment can be fixed. It has become. Here, FIG. 51 shows a rear view of the dial lock according to the second embodiment. FIG. 51 shows a locked state. A stopper 20 is placed on the plane of the table portion 223 (see FIG. 28), and the stopper 20 is fixed to the drive shaft 22 by fitting a nut to the shaft portion 222. Further, in the dial lock A according to the second embodiment, the stopper 20 is provided with a stopper protrusion 21 protruding from the main body of the stopper 20. A stopper receiver 1i is provided on the rear outer side of the housing 1 so as to be in contact with the protrusion 21 of the stopper and maintain the stopper 20 pointing in the left direction (horizontal state) in the locked state. In addition, about the stopper 20, you may change the direction of the notch fixed to the axial part 222 of the drive shaft 22. FIG.

  Further, the dial lock A according to the second embodiment is different from the first embodiment in the shapes of the indicator 23, the middle plate 17, and the sleeve 5. FIG. 52 is a perspective view of the front side of the middle plate according to the second embodiment. In the dial lock A according to the second embodiment, the indicator spring 235 (see FIG. 31) is unnecessary, and the middle plate 17 has a long hole 174 in the middle plate 17 according to the first embodiment, and a circular shape. The through hole 174a (see FIGS. 3 and 25) is not provided. Further, a middle portion of the opening on the front side of the sleeve accommodating portion 175 except the upper portion, in other words, the left, lower, and right portions, is cut out slightly larger than the inner diameter of the sleeve accommodating portion 175. A plate notch 176 is formed. The middle plate notch 176 accommodates an indicator rotation support portion 237 and an integrated indicator spring 236 described later.

  FIG. 53 is a perspective view of the front side of the indicator according to the second embodiment. The indicator 23 includes a main body portion 231, a fan portion 232, an indicator rotation support portion 237, and an integrated indicator spring 236. The main body portion 231 has a semicircular shape having a diameter slightly larger than the diameter of the outer periphery 53 of the sleeve 5 and is provided with a step. The fan portion 232 is formed by a panel formed on the upper portion of the main body portion 231, and is printed with a red circle for distinguishing the unlocked and locked state of the dial lock A. The red circle of the fan part 232 only needs to be able to determine the unlocked and locked state, and the shape and color are not limited thereto. The indicator rotation support portion 237 has a semicircular shape continuous to the main body portion 231, is formed to be slightly larger than the outer diameter of the main body portion 231, and is accommodated in the notch 176 of the middle plate. The main body portion 231 and the indicator rotation support portion 237 form a ring. Further, the indicator rotation support portion 237 is connected to the back surface of the main body portion 231 having a ring shape having a step, and is positioned one step rearward from the main body portion 231. The integrated indicator spring 236 is formed such that a part (lower left side) of the indicator rotation support portion 237 is cut away. The integrated indicator spring 236 includes a spring receiver 2361 that is continuous with the indicator rotation support portion 237, a C-shaped spring 2362 that is continuous with the spring receiver 2361, and a spring protrusion 2363 provided on the C-shaped spring 2362. A space 2364 is formed between the spring receiver 2361 and the C-shaped spring 2362. The spring protrusion 2363 protrudes further outward than the outer surface of the indicator rotation support portion 237 and is stronger than the inner surface of the middle plate notch 176 and the indicator rotation support portion 237 when housed in the notch 176 of the middle plate. Contact. The C-shaped spring 2362 functions as a spring by being flexible, and suppresses the rotation of the indicator 23. The integrated indicator spring 236 replaces the indicator spring 235 and can prevent the indicator 23 from rotating accidentally. Here, FIG. 54 is a front perspective view showing the relationship between the middle plate and the indicator according to the second embodiment. The middle plate cutout 176 is cut out in a wider range than the area where the integrated indicator spring 236 and the indicator rotation support portion 237 are formed so that the indicator 23 can rotate and display the unlocked and locked state. ing.

  FIG. 55 is a perspective view of the front side of the sleeve according to the second embodiment. In the sleeve 5 according to the second embodiment, since the indicator 23 according to the second embodiment is formed thicker than the indicator 23 according to the first embodiment, the depth of the step 58 on the front side is the first embodiment. The sleeve 5 is formed deeper than the step 58 of the sleeve 5. In the dial lock A according to the first embodiment, the indicator 23 is rotated by the cylinder 6. However, in the dial lock A according to the second embodiment, the indicator 23 is mainly rotated by the sleeve 5. Specifically, the indicator 23 is rotated by the sleeve 5 and the cylinder 6 at the time of locking, and the indicator 23 is rotated by the sleeve 5 at the time of unlocking. Therefore, in the second embodiment, the step 58 of the sleeve 5 is formed deeper than in the first embodiment.

FIG. 56 is a front perspective view showing the relationship between the indicator and the sleeve according to the second embodiment in the locked state. FIG. 57 is a front perspective view showing the relationship between the indicator and the sleeve according to the second embodiment in the unlocked state.
The indicator 23 allows rotation of the rotation protrusion 63 of the cylinder 6 and contacts with the rotation protrusion 63 of the cylinder 6 in portions other than the main body 231, in other words, the indicator rotation support portion 237 and the integrated indicator spring 236. The indicator 23 is rotated.

  In the locked state, as shown in FIG. 56, the first side surface 631 (right side) of the rotating projection 63 of the cylinder 6 is in contact with the main body side surface 231 a (right side) of the main body portion 231 of the indicator 23. At that time, the red of the fan portion 232 indicating the locked state is displayed on the display window 2a of the front panel 2. At the time of unlocking, when the knob 3 (not shown in FIGS. 56 and 57) is rotated in the unlocking direction (clockwise), the tamper 27 in the cylinder 6 comes into contact with the inner wall in the sleeve 5 (see FIG. 48). Reference), the cylinder 6 and the sleeve 5 rotate together. The first side surface 631 (right side) of the rotation projection 63 of the cylinder 6 is separated from the main body side surface 231a (right side) of the main body portion 231 of the indicator 23, and the second side surface 632 (left side) of the rotation projection 63 of the cylinder 6 is the indicator. The main body portion side surface 231b (left side) of the 23 main body portions 231 approaches.

  In 2nd Embodiment, the angle of the area | region which accept | permits rotation of the rotation protrusion 63 of the cylinder 6 at the time of unlocking is about 90 degree | times. When the cylinder 6 is rotated about 90 degrees clockwise from the locked state during unlocking, the light blue of the fan portion 232 indicating the unlocked state is displayed on the display window 2a of the front panel 2. In the second embodiment, the second side surface 632 (left side) of the rotating protrusion 63 of the cylinder 6 does not contact the main body side surface 231b (left side) of the main body portion 231 of the indicator 23 when unlocking. The angle of the portion other than the main body portion 231 (the indicator rotation support portion 237 and the integrated indicator spring 236) of the indicator 23 is set at the time of unlocking so that the rotation protrusion of the cylinder 6 can be rotated about 110 degrees during the number search. It is designed to be larger than 90 degrees that is the angle of the region that allows the rotation of the rotation projection 63 of the cylinder 6. The sleeve 5 is restricted from rotating when the rotation restriction receiving portion 56 (see FIG. 44) of the sleeve 5 and the rotation restriction protrusion 1k (see FIG. 7A) of the housing 1 are in contact with each other. Also in the second embodiment, the rotation restriction receiving portion 56 is notched so that the rotation angle of the sleeve 5 is about 90 degrees. Therefore, when the knob 3 in other words, the cylinder 6 and the sleeve 5 are rotated 90 degrees clockwise, the end portion 56a of the rotation restricting receiving portion 56 and the rotation restricting projection 1k of the housing 1 are in contact with each other, and the rotation is restricted and unlocked. It becomes. In the unlocked state, the light blue of the fan portion 232 indicating the unlocked state is displayed on the display window 2a of the front panel 2. The light blue color of the fan 232 is not limited to this as long as the unlocked and locked states can be determined. When shifting from the unlocked state to the locked state, when the knob 3 is rotated in the locking direction (counterclockwise), the tamper 27 in the cylinder 6 contacts the inner wall in the sleeve 5 (see FIG. 48). The cylinder 6 and the sleeve 5 rotate together, and the first side surface 631 (right side) of the rotation protrusion 63 of the cylinder 6 contacts the main body side surface 231 a (right side) of the main body portion 231 of the indicator 23.

  Furthermore, when the cylinder 6 is rotated by rotating the knob 3 counterclockwise, the indicator 23 is such that the main body side surface 231a (right side) of the main body portion 231 of the indicator 23 is the first side surface 631 (right side) of the rotation protrusion 63 of the cylinder 6. ) To rotate when pressed. When the rotation of the sleeve 5 is restricted by contact between the end 56b (see FIG. 44) of the rotation restriction receiving portion 56 of the sleeve 5 and the rotation restriction protrusion 1k (see FIG. 7A) of the housing 1, the locked state It becomes. At that time, the red of the fan portion 232 indicating the locked state is displayed on the display window 2a of the front panel 2.

  Similar to the dial lock A according to the first embodiment, the dial lock A according to the second embodiment moves the dial or the axis of the dial in the axial direction when the dial is returned to the return code as in the prior art. There is no need. Therefore, the dial lock A according to the second embodiment can make the length of the dial 4 in the axial direction, in other words, the length in the left-right direction shorter than before, and as a result, it can be made smaller than before. it can. Further, the dial lock A according to the second embodiment, like the dial lock A according to the first embodiment, generates a click feeling when the dial 4 is rotated, and when the dial 4 is returned to the return code. It can be in a free state with no click feeling. And the dial spring 13 can also implement | achieve the function which shifts to a free state, and the function to generate | occur | produce a click feeling effectively using the space between the dial 4 similarly to the comb 15. FIG. Moreover, the dial lock A which concerns on 1st Embodiment can discriminate | determine the unlocked state of the dial lock A, and the state of locking easily by providing the indicator 23. FIG. Further, the dial lock A according to the second embodiment, like the dial lock A according to the first embodiment, includes a boat 9 having a number setting switch 91, etc. (Referred to as lock code or setting number) can be set (changed). In addition, the dial lock A according to the second embodiment includes a number search plate 11 and, like the dial lock A according to the first embodiment, can be emergency unlocked by using the number search key 24, and the set number can be set. You can search. Moreover, the dial lock A which concerns on 2nd Embodiment can exchange the cylinder 6 by using the inner cylinder exchange key 25 similarly to the dial lock A which concerns on 1st Embodiment. The dial lock A according to the second embodiment, like the dial lock A according to the first embodiment, is devised in terms of the configuration, shape, and relative positional relationship of each component including the groove plate 16, while being small in size. The various functions described above are realized.

  Furthermore, the dial lock A according to the second embodiment is provided with the integrated indicator spring 236, so that the indicator spring 235 in the dial lock A according to the first embodiment is unnecessary and has a simpler configuration. Further, the dial lock A according to the second embodiment does not require the indicator spring 235 to be attached to the long hole 174 and the through hole 174a of the middle plate 17, so that it can be easily assembled.

<Third Embodiment>
FIG. 58 is a perspective view of the front side of the dial lock according to the third embodiment. Unlike the dial lock A according to the first embodiment, the dial lock A according to the third embodiment has a configuration that is long in the vertical direction, and a handle 1 j is provided on the right side of the dial 4.

  As mentioned above, although embodiment of this invention was described, the lock device which concerns on this invention is not restricted to these, In the range which does not deviate from the summary of this invention, it can change variously, Moreover, these are combined as much as possible. Can do. For example, the dial lock A according to the first embodiment may have a vertically long configuration like the dial lock A according to the second embodiment or the third embodiment, depending on the application. Moreover, the dial lock A which concerns on 1st Embodiment, 2nd Embodiment, and 3rd Embodiment is good also as a structure which replaced the position of the knob 3 and the dial 4, and reversed right and left and up and down. Further, the stopper 20 may slide instead of rotating. Further, the stopper 20 according to the second embodiment has the same configuration as the stopper 20 according to the first embodiment, and the dial lock A according to the second embodiment does not have the stopper protrusion 21 or the stopper receiver 1i. A simpler configuration may be used. Further, the dial lock A according to the first embodiment and the third embodiment may be configured to have a stopper projection 21 and a stopper receiver 1i as in the second embodiment. The dial lock A according to the first to third embodiments is a so-called dial lock that can be replaced by an inner cylinder, but may be a dial lock that does not require an inner cylinder replacement and may have a simpler configuration. In addition, the dial lock A according to the first to third embodiments is provided with the indicator 23, but may have a simpler configuration without the indicator. The dial lock A according to the first embodiment or the third embodiment may be configured such that the integrated indicator spring 236 of the dial lock A according to the second embodiment is used and the indicator spring 235 is not used.

A ... Dial lock, 1 ... Housing, 2 ... Front panel, 3 ... Knob, 4 ... Dial, 5 ... Sleeve, 6 ... Cylinder, 7 ... Wheel, 8 ... Slide plate, 9 ... Boat, 10 ... Holder, 11 ... Number search plate, 12 ... Arm, 13 ... Dial spring, 14 ... Connector, 15 ... Comb , 16 ... Groove plate, 17 ... Middle plate, 18 ... Bar, 19 ... L plate, 20 ... Stopper, 22 ... Drive shaft, 23 ... Indicator, 24 ... ..Search key, 25 ... Inner cylinder replacement key

Claims (5)

An operation unit that rotates between a locking position and an unlocking position, and operates a stopper that engages with the holder;
A disc-shaped dial that can be set to an arbitrary unlocking code, the dial returning to a default return code when the operation unit is operated to a locked position or an unlocked position,
A wheel rotatable with the dial;
A drive unit that restricts the rotation of the operation unit according to a code of the dial and returns the dial to a return code,
The dial has a convex portion on one side surface,
The drive unit includes a slide unit that slides at the time of locking or unlocking, and a tip that moves along one side surface of the dial in conjunction with the slide unit, and abuts on a convex portion of the side surface to contact the dial. A lock actuating device, comprising: a return actuating part for returning the operating part to a return code; and a restricting part that interlocks with the slide of the slide part and restricts the rotation of the operating part according to the sign of the dial. The dial has a gear on the other side;
The drive unit further includes a resistance actuating unit that interlocks with the slide unit and generates a feel when the dial is rotated in contact with the gear,
2. The lock device according to claim 1, wherein the resistance actuating portion moves in conjunction with the slide portion and separates from the gear when the dial returns to a return code.   The drive unit, when the operation unit is in the unlocked position, releases the engagement between the dial and the wheel, and changes the position where the dial and the wheel mesh to set the unlocking code. The lock device according to claim 1, further comprising:   A cylinder lock connected to the operation unit, comprising: an inner cylinder having a key hole; and an outer cylinder to which the inner cylinder is attached, wherein the inner cylinder with respect to the outer cylinder is inserted by inserting an inner cylinder replacement key into the key hole. The lock device according to any one of claims 1 to 3, further comprising an inner cylinder replaceable cylinder lock that allows sliding of the inner cylinder and allows the inner cylinder to be extracted from the outer cylinder. 5. The lock device according to claim 1, further comprising an indicator that is connected to the operation unit and displays a lock state in conjunction with rotation of the operation unit.