JP5984638B2 - Date stamp with lock - Google Patents

Description

  The present invention relates to a date stamp typified by a receipt stamp or a reception stamp, and more particularly to a date stamp provided with a lock for preventing a date from being changed.

  The date stamp to which the present invention is applied has a main body case composed of a main case in which a printing unit is accommodated and a cover cylinder covering the outer surface of the main case, and the outer surface of the main case is covered with a cover cylinder To use. When changing the date, the cover cylinder is slid to the open position above the main case, the adjustment dial on which the print belt is wound is exposed, and the print belt is rotated. In order to prevent the date from being changed illegally, the present applicant has previously proposed a date stamp with a lock that prevents the cover tube from being slid to the open position (Patent Document 1). There, a lock structure is constituted by a cylinder lock mounted on the cover cylinder, a lock body fixed to the operation shaft of the cylinder lock, a lock piece fixed to the upper end of the main case, and the like.

  According to the date stamp of Patent Document 1, the cover cylinder can be slid to the open position only when the cylinder lock is unlocked and the engagement state between the locking body and the lock piece is released. Therefore, by keeping the key of the cylinder lock by the person in charge of management, it is possible to prevent the date from being intentionally changed due to an unauthorized operation of the adjustment dial, and to improve the security of the date stamp. In addition, since the person in charge of management only has to manage the key for the cylinder lock, it is possible to greatly simplify the management effort compared to the replacement stamp that replaces the replacement piece and changes the date. Can be done. The replacement piece is never lost.

JP 2011-25440 A (paragraph number 0050, FIG. 12)

  The present inventor has studied a specific structure of the lock structure in order to realize the lock structure disclosed in Patent Document 1, but it is extremely difficult to incorporate the cylinder lock into the cover cylinder in the process. It was confirmed. This is because an adjustment screw for adjusting the height of the printing surface of the printing unit is screwed into the center of the upper end wall of the cover cylinder, and a space for arranging the cylinder lock cannot be secured. Furthermore, it is not allowed to omit the adjustment screw because it is necessary to adjust the height of the printing surface of the printing unit and the printing surface of the fixed printing body. Although it is not impossible to greatly change the structure of the date stamp to secure a space for placing the cylinder lock, the overall cost of the date stamp increases significantly.

  The lock structure disclosed in Patent Document 1 uses a ring-shaped space generated between the adjustment screw and the cover cylinder to arrange the cylinder lock in a lateral direction, and the idea is not mistaken and is an idea. . However, since a cylinder lock that is small enough to be arranged using a ring-shaped space is not commercially available, a lock structure cannot actually be configured. The only way to arrange a lock structure using a ring-shaped space is to prepare a special lock with a special structure or a dedicated cylinder lock that is downsized as a whole. Inevitably increases the overall cost of the date stamp.

  For example, if a lock section for accommodating the cylinder lock is integrally provided around the cover cylinder, the cylinder lock can be easily accommodated in the dedicated lock section. However, since the lock section protrudes around the cover cylinder, the impression of the appearance of the cover cylinder is impaired, and it is inevitable that the lock section gets in the way when the cover cylinder is held with one hand.

As a result of repeatedly examining the arrangement of the adjustment screw and the lock for adjusting the mark face height and the related structure, the present inventor has come up with the idea of reversing the arrangement of the adjustment screw and the lock. It came to propose.
It is an object of the present invention to provide a date stamp with a lock that can reliably prevent a date from being illegally changed by a sliding displacement operation of a cover cylinder to an open position and exhibit high security. .
The object of the present invention is to make it possible to arrange a lock structure and a height adjustment structure that adjusts the height of the stamp face without greatly changing the structure of the current date stamp. It is to provide a date stamp with a lock that can prevent the impression and usability of the product from being impaired.

  In the date stamp with lock according to the present invention, a printing unit 2 including a plurality of printing belts 24 and an adjustment dial 22 is accommodated in the main body case 1. The main body case 1 includes a main case 7 that accommodates the printing unit 2 and a cover cylinder 8 that covers the outer surface of the main case 7. The cover tube 8 is supported by the main case 7 so that the posture can be changed between a closed posture that covers the outer surface of the main case 7 and an open posture that opens the outer surface of the main case 7. In the state where the cover cylinder 8 is in the open posture and the adjustment dial 22 is exposed, the date of the printing unit 2 can be changed by operating the adjustment dial 22. A lock unit 32 having a lock structure that restricts the cover cylinder 8 from being operated to the open posture is disposed on the end wall of the cover cylinder 8. Furthermore, an adjustment body 54 having a height adjustment structure for adjusting the height of the printing surface of the printing unit 2 is arranged around the lock unit 32, and a part of the adjustment body 54 is exposed to the outer surface of the cover cylinder 8. To do.

  The lock structure includes a lock unit 32 fixed to the end wall of the cover cylinder 8, a lock body 34 fixed to the operation shaft 33 of the lock unit 32, and an engagement body 35 provided on the inner surface of the main case 7. The lock unit 32 is composed of a cylinder lock. In a state where the lock unit 32 is locked by the key 36, the lock body 34 is engaged with the engagement body 35, and the cover cylinder 8 is restricted from being switched to the open position.

  The height adjustment structure includes a circular adjustment ring 54, and an internal thread 58 is formed on the inner surface of the adjustment ring 54. The female screw 58 of the adjustment ring 54 is screwed into the male screw 41 provided on the peripheral surface of the shaft portion 40 of the lock unit 32, and the adjustment ring 54 is supported by the shaft portion 40 so as to be adjustable.

  A fastening boss 16 for fixing the lock unit 32 to the end wall of the cover cylinder 8 is formed to bulge. An operation window 59 is opened in the peripheral wall of the fastening boss 16, and a part of the adjustment ring 54 is exposed to the outer surface of the fastening boss 16 through the operation window 59. An upper cap 17 detachably attached to the fastening boss 16 covers the upper surface of the lock unit 32 and the periphery of the operation window 59.

  The lock body 34 includes a main body portion 48 formed in a disk shape, and engagement claws 49 that are formed to protrude at a plurality of locations around the main body portion 48. Engaging bodies 35 that receive the engaging claws 49 are provided at a plurality of locations on the inner peripheral surface of the main case 7.

  The height adjustment structure includes an adjustment ring 54 disposed above the lock body 34 and a relay frame that is disposed between the lock body 34 and the frame 20 of the printing unit 2 and transmits the adjustment operation of the adjustment ring 54 to the frame 20. 55. On the upper surface of the relay frame 55, a plurality of passive pieces 63 that come into contact with the adjustment ring 54 protrude upward. A partial arc-shaped relief groove 50 corresponding to the passive piece 63 is formed in the main body 48 of the lock body 34. The passive piece 63 of the relay frame 55 protrudes upward from the main body 48 via the escape groove 50 and contacts the adjustment ring 54.

  The printing unit 2 is a main case 7, supported between the lower printing position and the upper date change position so as to be vertically displaceable, and a date change position by a spring 25 disposed between the printing unit 2 and the main case 7. It is pushed upward. An adjustment window 9 for exposing the adjustment dial 22 displaced to the date change position is opened in the middle of the cylindrical wall of the main case 7. A pair of regulating legs 65 are integrally provided on the relay frame 55. In a state where the lock unit 32 is unlocked and the printing unit 2 is displaced to the date change position, the regulation leg 65 is received by the upper opening edge of the adjustment window 9 so that the printing unit 2 passes the date change position and passes through the main case 7. Regulates exiting.

  The lock unit 32 constituted by a cylinder lock is fastened to the end wall of the fastening boss 16 by a first nut 44 screwed into the male screw 41 of the lock case 37. The lock body 34 is engaged with an operation shaft 33 provided integrally with the inner cylinder of the lock unit 32 so as not to be relatively rotatable, and is fixed by a second nut 45 screwed into the operation shaft 33.

  A fixed print body 3 including a stamp face holder 26 and a rubber print body 27 fixed to the lower surface thereof is detachably attached to the lower end of the main case 7. A date window 28 through which the printing belt 24 is put in and out of the fixed printing body 3 and a replacement window 29 from which the replacement mark 70 is attached and detached are opened. The replacement mark 70 includes a name printing body 71 and a holder 72 for mounting the name printing body 71 to the replacement window 29. The holder 72 is detachably attached to the replacement window 29 from the upper surface side of the fixed printing body 3.

  In the present invention, the cover cylinder 8 is operated to the open posture at the date stamp including the printing unit 2, the main case 7 that accommodates the unit 2, and the cover cylinder 8 that covers the outer surface of the main case 7. A lock unit 32 having a lock structure that restricts this is disposed on the end wall of the cover cylinder 8. Further, an adjustment body 54 having a height adjustment structure for the printing unit 2 is arranged around the lock unit 32 so that a part of the adjustment body 54 is exposed to the outer surface of the cover cylinder 8. In this way, when the lock unit 32 is arranged on the end wall of the cover cylinder 8 and the adjusting body 54 is arranged around the lock unit 32, the upper structure of the main body case 1 can be changed without having to greatly change the current date stamp structure. The height adjustment structure that adjusts the lock structure and the marking face height can be arranged in the main body case 1 without difficulty.

  Therefore, according to the date stamp of the present invention, it is possible to reliably prevent the date from being illegally changed by the sliding movement of the cover cylinder 8 to the open position while suppressing the increase in the overall cost, and high security. Can provide a date stamp with a lock that can function. Furthermore, since the lock structure and the height adjustment structure are accommodated in the main body case 1, it is possible to provide a date stamp with a lock that can prevent the appearance and usability from being impaired. Further, since a part of the adjustment body 54 is exposed on the outer surface of the cover cylinder 8, the height adjustment of the printing unit 2 can be easily performed as in the case of the conventional date stamp.

  When the lock structure is configured by the lock unit 32 provided on the cover tube 8 side, the lock body 34, the engagement body 35 provided on the inner surface of the main case 7, etc., the lock unit 32 can be simply locked or unlocked. With a simple operation, the lock body 34 and the engagement body 35 can be engaged and disengaged. Therefore, when the date is changed by operating the printing belt 24, the lock unit 32 is unlocked, the cover cylinder 8 is moved to the open position, and the adjustment dial 22 is exposed from the adjustment window 9. Often, date changes and adjustments can be made quickly and easily. In addition, by configuring the lock unit 32 with a cylinder lock, the overall weight is increased by the amount of the cylinder lock, so the impression when holding the date stamp with one hand is rich, and the conventional date stamp is added. In comparison, the user can be informed that the date stamp has a higher security function. Furthermore, by constituting the lock unit 32 with a commercially available cylinder lock, it is possible to prevent the overall cost of the lock structure from increasing.

  When the adjustment ring 54 for height adjustment is screwed into the shaft portion 40 of the lock unit 32 and the adjustment ring 54 is supported by the shaft portion 40 so as to be adjustable and movable, a structure for supporting the adjustment ring 54 so as to be adjustable and movable is separately provided. There is no need to provide it. Therefore, the height adjustment structure can be simplified and the cost can be reduced as much as the shaft portion 40 and the male screw 41 of the lock unit 32 are used. Further, since the adjustment ring 54 is screwed into the male screw 41 of the shaft portion 40 which is precisely formed by metal processing, the adjustment ring 54 screwed into the shaft portion 40 is prevented from rattling up and down, and the printing surface height of the printing unit 2 is increased. The height can be adjusted accurately. In particular, when the male screw 41 is formed of a fine screw, the vertical adjustment amount per rotation when the adjustment unit 54 is rotated to move the printing unit 2 can be reduced. Can be performed more precisely.

  When the fastening boss 16 is provided on the end wall of the cover cylinder 8, the lock unit 32 is mounted on the end wall, and a part of the adjustment ring 54 is exposed from the operation window 59 opened in the peripheral wall, the adjustment ring 54 is directly attached to the fingertip. By rotating, the height can be adjusted easily. Further, since the upper cap 17 attached to and detached from the fastening boss 16 covers the upper surface of the lock unit 32 and the periphery of the operation window 59, it is possible to reliably prevent the adjustment ring 54 from being erroneously operated when the date stamp is imprinted. Furthermore, it is possible to eliminate the complicated appearance of the appearance of the date stamp.

  When the lock body 34 is constituted by the main body portion 48 and the engaging claws 49 formed at a plurality of locations around the main body portion 48, and further, the engagement bodies 35 are provided at a plurality of locations on the inner peripheral surface of the main case 7, With the pair of engaging claws 49 and the engaging body 35, the cover cylinder 8 can be held in a stable posture and immovable. For example, when the cover cylinder 8 is held immovable only by the pair of engagement claws 49 and the engagement body 35, the center axis of the cover cylinder 8 may be tilted with respect to the center axis of the main case 7, Such a tilting of the cover cylinder 8 can be eliminated, and the height of the printing unit 2 can be adjusted accurately.

  When the adjustment ring 54 and the relay frame 55 constitute a height adjustment structure, and the lock body 34 is disposed between the two 54 and 55, the lock body rotates when the lock unit 32 is locked and unlocked. There is a risk of causing operation interference between the relay frame 34 and the relay frame 55 that does not rotate. In order to avoid such operation interference, a plurality of passive pieces 63 project from the upper surface of the relay frame 55, and a partial arc-shaped escape groove 50 is formed in the main body 48 of the lock body 34. According to these date stamps, the lock unit 32, the adjustment ring 54, the lock body 34, and the relay frame 55 are arranged on the upper part of the main body case 1, and the operation interference between the lock body 34 and the relay frame 55 is skillfully avoided. Therefore, the date stamp with the lock can be made compact by avoiding an unnecessarily large size.

  When the pair of regulating legs 65 are provided on the relay frame 55 and the regulating unit 65 is received by the upper opening edge of the adjustment window 9 in a state where the printing unit 2 is displaced to the date changing position, the printing unit 2 is moved to the date changing position. It is possible to reliably regulate the exit from the main case 7 beyond the limit. Further, the number of parts can be reduced by integrally providing the regulation legs 65 using the relay frame 55, and the structure for assembling the regulation legs 65 to the frame 20 can be omitted. The overall cost of the mark can be reduced.

  When the lock unit 32 composed of a cylinder lock is fastened to the fastening boss 16 by the first nut 44 and the lock body 34 is fixed to the operation shaft 33 by the second nut 45, both the first and second cylinder lock accessories are provided. The lock unit 32 and the lock body 34 can be fixed by the nuts 44 and 45. Therefore, the first and second nuts 44 and 45, which are the accessory parts of the cylinder lock, can be used without waste, and it is possible to prevent an unnecessarily increase in the number of components of the lock structure.

  When the replacement mark 70 composed of the name print body 71 and the holder 72 is detachably attached to the replacement window 29 of the fixed print body 3 from the upper surface side, the fixed print body 3 is removed from the main case 7, The attachment / detachment operation of the replacement mark 70 with respect to the fixed printing body 3 can be performed easily and accurately. In a state where the fixed printing body 3 is removed from the main case 7, the entire upper surface of the fixed printing body 3 is opened, and the replacement window 29 and the structure of the peripheral portion thereof are clearly seen, This is because it can be detached. Further, the replacement mark 70 can be detached and attached without being obstructed by the print belt 24 facing the date window 28.

It is sectional drawing of the main body case upper part which shows the date stamp with a lock | rock. It is a vertical side view of the date stamp in use condition. It is a vertical front view of the date stamp in use condition. It is a front view of a date stamp in a state where a cover tube is opened. It is a disassembled perspective view of the date stamp with a lock | rock. It is the sectional view on the AA line in FIG. 1 which shows the state by which the lock | rock structure was locked. It is sectional drawing of the position equivalent to FIG. 6 which shows the state by which the lock structure was unlocked. It is a vertical side view of the upper part of the main body case showing a state where the lock structure is locked. It is a vertical side view of the upper part of the main body case showing a state where the lock structure is unlocked. It is a partially broken front view which shows a fixed printing body and a printing surface cap. It is the BB sectional drawing in FIG. It is a disassembled perspective view of a replacement mark and a fixed printing body. It is a top view of the replacement mark with which the fixed printing body was mounted | worn. It is CC sectional view taken on the line in FIG. It is an expanded view of the adjustment cylinder which shows the structure of an adjustment groove | channel. It is a longitudinal cross-sectional view of the stand which stands and holds a date stamp.

(Example) FIG. 1 thru | or FIG. 16 shows the Example of the date stamp with a lock | rock which concerns on this invention. In FIG. 2 and FIG. 3, the date stamp with a lock includes a main body case 1, a printing unit 2 accommodated in the main body case 1, a fixed printing body 3 disposed on the lower end surface of the main body case 1, and a fixed mark. It is composed of a marking cap 4 that covers the printing surface of the font 3. As shown in FIG. 10, the marking cap 4 includes a cap body 4 a in which an ink impregnation mat 5 is accommodated on the inner bottom, and a cap lid 4 b that covers the ink replenishing port 6 for the ink impregnation mat 5.

  The main body case 1 includes a main case 7 that accommodates the printing unit 2 and a cover cylinder 8 that covers the outer surface of the main case 7. The main case 7 is formed of a bottomed cylindrical plastic molded product, and a pair of adjustment windows 9 for exposing the adjustment dial 22 of the printing unit 2 are opened in the middle of the cylinder wall. A flat guide portion 10 for opening and closing the cover tube 8 and a guide rib 11 having a T-shaped cross section are integrally formed on the outer surface of the tube wall (see FIG. 6). On the bottom wall of the main case 7, an exit / exit 12 for taking the print belt 24 in and out of the fixed print body 3 is opened.

  As shown in FIG. 5, the cover cylinder 8 is formed of a bottomed cylindrical plastic molded product that opens downward, and slide grooves 14 that are guided by the guide rib 11 on the left and right sides of the cylinder wall are formed upward from the lower end of the cylinder. The lock claw 15 is formed on both sides of the lower end of the slide groove 14. A fastening boss 16 bulges on the upper end wall of the cover cylinder 8, and an upper cap 17 is detachably attached to the fastening boss 16.

  The cover cylinder 8 is externally fitted to the main case 7, and the slide groove 14 is slid and guided by the guide ribs 11, so that the cover cylinder 8 is closed and covers the outer surface of the main case 7, and the adjustment window 9 of the main case 7. The posture can be changed to an open posture that opens the outer surface of the. 2 and 3 show the state in which the cover cylinder 8 is in the closed position, and FIG. 4 shows the state in which the cover cylinder 8 is in the open position. When the cover cylinder 8 is in the open position, the adjustment dial 22 of the printing unit 2 can be exposed from the adjustment window 9, and the date of the printing unit 2 can be changed by rotating the printing belt 24 in this state. .

  In FIG. 2, the printing unit 2 includes a gate-shaped frame 20, a dial shaft 21 supported by its opposing wall, six adjustment dials 22 supported by the dial shaft 21, and a bridge 23 attached to the lower end of the frame 20. And five endless print belts 24 wound around the adjustment dial 22 and the bridge 23. The print belt 24 is provided with character blocks for printing two-digit year numbers, month numbers, and day numbers at regular intervals. Only the print belt 24 for printing month numbers is a single print belt. It consists of

  The printing unit 2 is accommodated in the main case 7 and can move up and down between a lower printing position and an upper date change position, and is a compression coil spring 25 arranged between the main case 7 and the frame 20. It is pushed upward toward the date change position. At the date change position, the entire printing unit 2 is pushed up by the spring 25, and the adjustment dial 22 faces the adjustment window 9. In a state where the printing unit 2 is displaced to the date change position, a later-described restricting leg 65 is received by the upper opening edge of the adjustment window 9, and the printing unit 2 is prevented from coming out of the main case 7 beyond the date change position. It is regulated (see Fig. 9).

  The fixed print body 3 is composed of a stamp face holder 26 and a rubber print body 27 adhered and fixed to the mark face holder 26. As shown in FIG. A date window 28 is opened. Further, a replacement window 29 for attaching / detaching the replacement mark 70 is opened adjacent to the rear side of the date window 28. A mounting claw 30 that protrudes upward is integrally provided on the left and right sides of the peripheral edge of the marking surface holder 26. The mounting claw 30 is inserted into and engaged with the mounting hole 31 of the main case 7 from below, so that the fixed printing body 3 is fixed. Can be integrated with the main case 7 (see FIGS. 11 and 12). By assembling the cover cylinder 8 to the main case 7 in this state, the outer surface of the mounting claw 30 is covered with the cover cylinder 8. The meaning will be described later. A print surface for printing characters such as receipt, receipt, and receipt / receipt is formed in a region in front of the date window 28 of the stamp surface of the rubber print body 27. In addition, a printing surface for printing characters such as a company name and a department name is formed in the area behind the date window 28. Further, the name of the stamper and the employee number are indicated by a replacement mark 70 attached to the replacement window 29. Etc. can be printed.

  In order to prevent the date when the cover cylinder 8 is illegally opened and the date is intentionally changed, a lock structure is provided between the cover cylinder 8 and the main case 7 so that the date of the printing unit 2 is not authorized. Preventing changes. Further, a height adjustment structure is provided between the cover cylinder 8 and the frame 20 so that the printing surface height of the printing unit 2 can be adjusted.

  In FIG. 1, the lock structure includes a lock unit 32 fixed to the end wall of the fastening boss 16, a lock body 34 fixed to the operation shaft 33 of the lock unit 32, and an engagement groove ( Engaging body) 35. Reference numeral 36 is a key for locking or unlocking the lock unit 32. The lock unit 32 includes a commercially available cylinder lock such as a disk tumbler type, a pin tumbler type, or a magnet tumbler type, and is configured by incorporating an outer cylinder, an inner cylinder, a tumbler, and the like inside the lock case 37.

  The lock case 37 is integrally provided with a flange 37 a that is received by a lock seat 38 provided in the center of the fastening boss 16 and a shaft portion 40 that is inserted into and engaged with an attachment hole 39 formed in the lock seat 38. Yes. The shaft portion 40 is formed in a drum-shaped cross section in which the opposing peripheral surface is formed flat, and a male screw 41 is formed on the circular arc peripheral surface. Therefore, as shown in FIGS. 1 and 3, a small gap is formed between the shaft portion 40 and the adjustment ring 54 on the flat shaft portion peripheral surface. A key hole 42 is opened at the upper end of the inner cylinder, an operation shaft 33 having a drum-shaped cross section is integrally formed on the lower side of the inner cylinder, and a male screw 43 is formed on the peripheral surface thereof. The shaft portion 40 of the lock case 37 is inserted into and engaged with the mounting hole 39 of the lock receiving seat 38 from above, and the first nut 44 having a large diameter is screwed into the male screw 41 on the peripheral surface, whereby the lock unit 32 is locked. 38. The keyhole 42 in this state is exposed on the upper end surface of the lock case 37.

  As shown in FIG. 5, the lock body 34 is a metal body that is integrally provided with a main body 48 formed in a disc shape and engagement claws 49 that are formed to protrude at two opposite locations around the main body 48. It consists of parts, and the partial groove | channel-shaped relief groove 50 is formed in two places of the plate | board surface of the main-body part 48. As shown in FIG. Further, a connecting hole 51 that fits outside the operation shaft 33 is formed in a drum shape at the center of the main body 48. After the coupling hole 51 is fitted on the operation shaft 33 together with the washer, the lock body 34 is fixed to the operation shaft 33 by screwing the small-diameter second nut 45 into the male screw 43. Therefore, when the key 36 is inserted into the key hole 42 and the inner cylinder is rotated, the lock body 34 rotates along with the operation shaft 33.

  The engaging groove 35 is formed in two concave portions on the inner surface of the upper cylindrical wall of the main case 7. When the lock unit 32 is locked with the key 36, as shown in FIG. The claw 49 engages with the engagement groove 35 to prevent the cover cylinder 8 from being moved from the closed position to the open position. Further, in the state where the lock unit 32 is unlocked with the key 36, as shown in FIG. 7, the engagement claw 49 of the lock body 34 is separated from the engagement groove 35. It will be in a state where it can move upward. By opening the cover cylinder 8 in this state, the printing unit 2 is pushed up to the date changing position by the spring 25, and the lower part of the printing belt 24 is pulled out from the date window 28 and the exit / exit port 12. The printing belt 24 can be rotated. Note that the lower end of the cover cylinder 8 at the above-mentioned closed position (open restriction position) is received by a flange wall provided at the lower part of the main case 7.

  The height adjustment structure includes an adjustment ring (adjustment body) 54 and a relay body 55 that transmits the adjustment operation of the adjustment ring 54 to the frame 20 of the printing unit 2. The adjustment ring 54 is disposed above the lock body 34, and the relay body 55 is disposed between the lock body 34 and the frame 20 of the printing unit 2. In FIG. 5, the adjustment ring 54 is made of a plastic product having a circular ring shape, and a group of non-slip ribs 56 is formed on the entire peripheral surface. A recess 57 for receiving the first nut 44 is formed on the inner surface of the adjustment ring 54, and a female screw 58 is formed on the inner surface of the ring below the recess 57. In order to rotate the adjustment ring 54, a pair of operation windows 59 are opened on the left and right of the peripheral wall of the fastening boss 16. The height adjustment of the printing unit 2 can be easily performed by gripping the anti-slip rib 56 exposed from the operation window 59 with a fingertip and rotating the adjustment ring 54.

  The adjustment ring 54 is supported by the shaft portion 40 of the lock case 37 so that it can be adjusted up and down by screwing the female screw 58 into the male screw 41 of the lock case 37 (see FIG. 8). As described above, when the adjustment ring 54 is supported by the shaft portion 40 so as to be movable up and down using the male screw 41 provided on the shaft portion 40 of the lock case 37, it is not necessary to separately provide a screwing counterpart of the adjustment ring 54. Therefore, it is possible to prevent the height adjustment structure from becoming complicated. Further, since the male screw 41 formed on the shaft portion 40 is a fine screw, the vertical adjustment amount per rotation when the adjustment unit 54 is rotated to move the printing unit 2 can be reduced. Furthermore, since the adjustment ring 54 is screwed into the male screw 41 that is precisely formed by metal processing, the adjustment ring 54 screwed into the shaft portion 40 can be prevented from rattling up and down, and the overall marking surface height of the printing unit 2 can be reduced. Adjustment can be made precisely. In addition, since the lock unit 32 and the adjustment ring 54 are arranged concentrically, a lock structure and a height adjustment structure are provided on the upper inner surface of the cover cylinder 8 in a state in which the space occupied by the both 32 and 54 is eliminated. Centralized arrangement is possible.

  In FIG. 5, the relay frame 55 includes a center joint seat 61 formed in a quadrilateral shape, a crescent-shaped passive seat 62 projecting in front of and behind the joint seat 61, and a pair of front and rear projecting on the upper surface of the passive seat 62. It consists of a plastic molded product integrally provided with the passive piece 63. At the four corners of the lower surface of the joint seat 61, joint legs 64 that engage with the upper wall 20a of the frame 20 of the printing unit 2 protrude downward. Further, on the front lower surface of the front passive portion 62 and on the rear lower surface of the rear passive portion 62, the regulation legs 65 project downward, respectively. The passive piece 63 has a semicircular cross section.

  The junction frame 64 of the relay frame 55 is engaged with the lower surface side of the upper wall 20a, and the junction seat 61 is connected and fixed to the upper wall 20a of the frame 20 of the printing unit 2 in advance. Further, the lock unit 32, the lock body 34, and the adjustment ring 54 are assembled in advance to the cover cylinder 8, and the lock unit 32 is unlocked with the key 36 before the cover cylinder 8 is assembled to the main case 7. After the printing unit 2 with the relay frame 55 assembled is assembled with the spring 25 in the main case 7, the cover cylinder 8 is assembled with the main case 7, and the passive piece 63 engages with the relief groove 50. Thus, the regulation leg 65 of the relay frame 55 is engaged with the adjustment window 9. In this assembled state, the passive piece 63 protrudes upward from the main body 48 via the escape groove 50 and contacts the lower surface of the adjustment ring 54 (see FIG. 8). The lock body 34 can rotate relative to the relay frame 55 within the clearance groove 50. Therefore, when the lock body 34 is rotated by the key 36, the passive piece 63 that does not rotate and the main body 48 that rotates. Can be prevented from interfering with each other.

  As described above, when the lock structure and the height adjustment structure are collectively arranged on the upper surface of the cover cylinder 8, the upper end surface of the lock unit 32 and the keyhole 42 are exposed on the upper surface of the fastening boss 16. Further, the anti-slip rib 56 and the operation window 59 of the adjustment ring 54 are exposed at two locations on the peripheral surface of the fastening boss 16, and the impression of the appearance of the date stamp is impaired. The upper cap 17 is provided in order to eliminate such problems in appearance and prevent foreign matter from entering the keyhole 42, and the cap 17 is detachably attached to the fastening boss 16. In order to maintain the mounting state of the upper cap 17, ribs that engage with each other are provided on the lower portion of the peripheral wall of the fastening boss 16 and the lower portion of the inner surface of the upper cap 17.

  The details of the replacement mark 70 are shown in FIGS. The replacement mark 70 includes a name printing body 71 for printing the name and employee number of the stamper, a holder 72 for mounting the name printing body 71 on the replacement window 29, and the name printing body 71 and the holder 72. It consists of a height adjustment mechanism or the like provided between them. In FIG. 12, the name printing body 71 includes a plastic printing board 73 and a rubber printing body 74 that is bonded and fixed to the lower surface of the printing board 73. Screw bosses 75 are formed on the upper surface of the printing stand 73, and positioning ribs 76 that also serve as rotation stoppers are formed on the left and right side surfaces.

  The holder 72 is made of a portal-shaped plastic molded product integrally provided with a horizontally-long rectangular receiving wall 78 and four engaging legs 79 provided downward on the left and right sides of the receiving wall 78. A screw insertion hole 80 is formed in the center in a vertically penetrating manner. On both the left and right sides of the screw insertion hole 80, reference ribs 81 having a triangular cross section constituting the height adjusting mechanism are provided, and stoppers 82 are provided on the left and right of the front edge of the receiving wall 78.

  The height adjusting mechanism includes a reference rib 81, an adjustment cylinder 85 supported by the reference rib 81, a compression coil spring 86 disposed between the holder 72 and the printing stand 73, and the adjustment cylinder 85. It comprises a group of adjustment grooves 87 formed at the lower end of the cylindrical wall. On the peripheral surface of the adjusting cylinder 85, a regulating piece 88 that is received by the previous stopper 82 is formed in a protruding manner. As shown in the development view of FIG. 15, each adjustment groove 87 is formed by cutting the lower end of the cylinder wall of the adjustment cylinder 85 into an inverted V shape so that each groove 87 continuously forms a groove row in the circumferential direction. It is formed. Twelve adjustment grooves 87 are formed at positions facing the cylinder wall of the adjustment cylinder 85, and the vertical height positions of the adjacent adjustment grooves 87 differ by 0.2 mm.

  The fastening screw 89 in a state of being inserted into the adjustment cylinder 85 is inserted into the screw insertion hole 80 of the receiving wall 78, and the screw shaft is screwed into the screw boss 75 of the printing stand 73. Are integrated. In this assembled state, as shown in FIG. 14, the lower surface of the operating head of the fastening screw 89 is supported by the upper end wall of the adjustment cylinder 85, and the pair of adjustment grooves 87 are received by the pair of reference ribs 81. Yes. The name printing body 71 is biased to move downward by a spring 86 and is suspended and supported by a holder 72 via an adjustment cylinder 85 and a fastening screw 89.

  Positioning grooves 90 for receiving positioning ribs 76 are formed on the left and right sides of the replacement window 29, and four engagement holes 91 for engaging the engagement legs 79 are adjacent to the replacement window 29. It is formed. The replacement mark 70 is attached to and detached from the replacement window 29 from the upper surface side of the fixed print body 3 in a state where the fixed print body 3 is removed from the main case 7 and replaced. Specifically, after the fixed printing body 3 is removed from the main case 7, the engagement leg 79 of the replacement mark 70 attached to the replacement window 29 is elastically deformed in a direction approaching the left and right center to engage the engagement hole 91. And the replacement mark 70 is removed from the replacement window 29. Next, the name printed body 71 of the new replacement mark 70 is fitted into the replacement window 29 in a state where the positioning rib 76 and the positioning groove 90 are engaged, and the engagement leg 79 is further inserted into the engagement hole 91. The engaging claw is engaged with the step on the lower surface side of the engaging hole 91.

  When the height of the new replacement mark 70 that has been replaced is adjusted, first, the surface of the name print body 71 is printed with the ink printed on the print surfaces of the fixed print body 3 and the rubber print body 74. Check the marking status. In most cases, since the rubber printing body 27 of the fixed printing body 3 and the rubber printing body 74 of the name printing body 71 are different in production time, the printed character of the name printing body 71 is faint. , Often blurring. In any case, it is possible to determine whether the name print body 71 is adjusted to the direction in which the blur is corrected or the direction in which the blur is corrected is adjusted with respect to the print surface of the fixed print body 3 by trying the seal. it can.

  Next, the height of the printing surface of the name printing body 71 is adjusted by rotating the adjustment cylinder 85 left or right to change the adjustment groove 87 supported by the reference rib 81. For example, when correcting the fading, the adjustment cylinder 85 is rotated in the clockwise direction in FIG. 13 and the adjustment groove 87 having a large groove depth is supported by the reference rib 81, thereby printing the name printing body 71. Lower the surface. That is, when the printing surface of the fixed printing body 3 is used as a reference, the printing surface of the name printing body 71 is moved to the side protruding from the printing surface of the fixed printing body 3. Further, when correcting the blur, the adjustment cylinder 85 is rotated in the counterclockwise direction, and the adjustment groove 87 having a small groove depth is supported by the reference rib 81, so that the printing surface of the name printing body 71 is changed. increase. That is, when the printing surface of the fixed printing body 3 is used as a reference, the printing surface of the name printing body 71 is moved to the side of retreating from the printing surface of the fixed printing body 3.

  In this embodiment, 12 pairs of 6 adjustment grooves 87 are provided, so that the total adjustment amount is 1.2 mm, and the height of the name printing body 71 can be adjusted within the range. Again, the seal is tried and the adjustment result is confirmed, and adjustment is performed until the state of characters printed on the name printing body 71 becomes a desired state. When performing height adjustment, when the adjustment groove 87 positioned at the start and end of the groove row is supported by the reference rib 81, that is, when the adjustment cylinder 85 is at the adjustment limit position, the adjustment cylinder 85 rotates beyond the adjustment limit. In order to prevent the operation, the regulating piece 88 is received by the stopper 82.

  As the groove depth of the adjustment groove 87 increases, the upward movement amount when the adjustment cylinder 85 gets over the reference rib 81 in opposition to the urging force of the spring 86 increases, and the operation resistance increases correspondingly. It becomes difficult to operate. In such a case, if the adjustment cylinder 85 is rotated while the fastening screw 89 of the replacement mark 70 is loosened and the urging force of the spring 86 is reduced, the adjustment cylinder 85 can be easily rotated. After the adjustment cylinder 85 is rotated, the fastening screw 89 is screwed again to fix the name printing body 71 to the fastening screw 89.

  As for the date stamp, the person in charge of management stores the key 36 in a predetermined place, and manages the usage status of the date stamp. At the start of work, after removing the upper cap 17, the key 36 is inserted into the keyhole 42 to unlock the lock unit 32, the cover cylinder 8 is opened, and the adjustment dial 22 faces the adjustment window 9. In this state, the adjustment dial 22 corresponding to the print belt 24 for printing the date and number is operated to select the character block suitable for the date to be used. When the date adjustment is completed, the lock unit 32 is locked in a state where the cover cylinder 8 is in the closed position, the opening movement of the cover cylinder 8 is prevented, and the person in charge of stamping with the upper cap 17 attached to the fastening boss 16 Pass the date stamp to. A series of date changing operations may be performed by the manager in charge, or may be performed by the person in charge of stamping in a situation where the manager in charge is present.

  According to the date stamp configured as described above, the cover cylinder 8 cannot be opened unless the lock unit 32 is unlocked with the regular key 36. It is possible to reliably prevent a non-user from changing the date stamp. In addition, since the date can be changed simply by feeding the print belt 24, the date can be changed more easily and with less labor compared to the conventional replacement seal. Furthermore, since the person in charge of management only needs to manage the key 36, it is possible to greatly save the management effort compared to the replacement stamp that required to manage the replacement frame. There is no risk of losing or damaging the print element. In the state where the cover tube 8 is in the closed position, the outer surface of the mounting claw 30 of the stamp surface holder 26 is covered with the cover tube 8. For this reason, it is not possible to remove the fixed print body 3 from the main case 7 by disengaging the attachment claw 30. Therefore, it is possible to prevent the date from being illegally changed by directly rotating the print belt 24 while the fixed print body 3 is detached from the main case 7. Incidentally, when the fixing claw 30 can be removed from the main case 7 by disengaging the attachment claw 30, the exit / exit 12 having an opening area larger than the date window 28 is exposed, and therefore the print belt 24 is removed. It is possible to change the date by directly rotating.

  When the date stamping frequency of the above configuration is high, the date stamp can be accommodated in the stand shown in FIG. The stand is an upper stand body 95 provided with a storage cylinder 94 for putting the date stamp in and out, a lower stand base 96 that supports the stand body 95, and a stand that is positioned directly below the storage cylinder 94. A mat holder 97 provided on the base 96 is used. The mat holder 97 is formed in a dish shape, and the ink storage mat 98 is accommodated therein. The date stamp in the non-use state is housed inside the housing cylinder 94 and is held in an upright position. Further, the printing surface of the fixed printing body 3 and the replacement stamp 70 contacts the upper surface of the ink storage mat 98. doing. Accordingly, the date stamp can be continuously stamped simply by taking it out of the storage cylinder 94, and the stamp cap 4 can be omitted in such a usage form.

  Other than the above embodiment, the upper cap 17 does not need to be attached to and detached from the fastening boss 16 and can be attached to and detached from the cover cylinder 8 provided with the engagement structure. The adjustment ring 54 is preferably supported by the shaft portion 40 so as to be adjustable and movable using the male screw 41. However, if necessary, the adjustment ring 54 is screwed into the inner surface of the fastening boss 16 and supported by the fastening boss 16 so as to be adjustable and movable. be able to. The adjusting body 54 does not need to be formed in a ring shape, and can be configured in a plate shape, a cylindrical shape, or the like. The lock unit 32 can be directly assembled to the upper end wall of the cover cylinder 8 from which the fastening boss 16 is omitted. The regulation leg 65 does not need to be formed integrally with the relay frame 55, and may be simply fixed to the frame 20 of the printing unit 2.

  A plurality of engaging claws 49 and engaging grooves 35 are preferably provided in that they can be fixedly held in a closed position in a stable state, but at least one engaging claw is sufficient. Further, the engaging body 35 does not need to have a groove structure, and can be formed by a rib, a protrusion, or a stepped portion that receives the upper surface of the engaging claw 49. In the above embodiment, the height adjustment structure for the replacement mark can be adjusted step by step using the reference rib 81 and the adjustment groove 87 as adjustment elements, but this is not necessary, and the nut and bolt are adjusted. The element can be adjusted steplessly.

DESCRIPTION OF SYMBOLS 1 Main body case 2 Printing unit 7 Main case 8 Cover cylinder 32 Lock unit 33 Operation shaft 34 Lock body 35 Engagement body (engagement groove)
36 Key 37 Lock case 40 Shaft 41 Male thread 54 Adjustment body (Adjustment ring)
58 Female thread 59 Operation window

Claims (9)

A printing unit (2) including a plurality of printing belts (24) and an adjustment dial (22) is accommodated in the main body case (1),
The main body case (1) includes a main case (7) that accommodates the printing unit (2) and a cover cylinder (8) that covers the outer surface of the main case (7).
The cover cylinder (8) is supported by the main case (7) so that the posture can be changed between a closed posture that covers the outer surface of the main case (7) and an open posture that opens the outer surface of the main case (7).
A date mark that allows the date of the printing unit (2) to be changed by operating the adjustment dial (22) in a state in which the cover cylinder (8) is opened and the adjustment dial (22) is exposed.
A lock unit (32) having a lock structure that restricts the cover cylinder (8) from being operated in an open position is disposed on the end wall of the cover cylinder (8), and adjusts the marking face height of the printing unit (2). An adjustment body (54) having a height adjustment structure is disposed around the lock unit (32), and a part of the adjustment body (54) is exposed on the outer surface of the cover cylinder (8). Date stamp with. The lock structure includes a lock unit (32) fixed to the end wall of the cover cylinder (8), a lock body (34) fixed to the operation shaft (33) of the lock unit (32), and a main case (7). An engagement body (35) provided on the inner surface of
The lock unit (32) consists of a cylinder lock,
In a state where the lock unit (32) is locked with the key (36), the lock body (34) is engaged with the engagement body (35) and the cover cylinder (8) is controlled to be switched to the open position. The date stamp with a lock according to claim 1. The height adjustment structure includes a circular adjustment ring (54), and an internal thread (58) is formed on the inner surface of the adjustment ring (54).
The female screw (58) of the adjustment ring (54) is screwed into the male screw (41) provided in the shaft part (40) of the lock case (37) of the lock unit (32), and the adjustment ring (54) is screwed into the shaft part (40). The date stamp with a lock according to claim 1 or 2, which is supported so as to be adjustable. A fastening boss (16) for fixing the lock unit (32) is bulged on the end wall of the cover tube (8),
An operation window (59) is opened in the peripheral wall of the fastening boss (16), and a part of the adjustment ring (54) is exposed to the outer surface of the fastening boss (16) through the operation window (59).
The upper cap (17) detachably attached to the fastening boss (16) covers the upper surface of the lock unit (32) and the periphery of the operation window (59). The date stamp with the described lock. The lock body (34) includes a main body portion (48) formed in a disk shape, and engagement claws (49) formed in a projecting manner at a plurality of locations around the main body portion (48).
The date stamp with a lock | rock as described in any one of Claim 2 to 4 with which the engaging body (35) which receives an engaging nail | claw (49) is provided in the several places of the internal peripheral surface of the main case (7). A height adjustment structure is arranged between the adjustment ring (54) disposed above the lock body (34) and between the lock body (34) and the frame (20) of the printing unit (2), so that the adjustment ring ( 54) and a relay frame (55) for transmitting the adjusting operation to the frame (20).
On the upper surface of the relay frame (55), a plurality of passive pieces (63) that come into contact with the adjustment ring (54) protrude upward.
A partial arc-shaped relief groove (50) corresponding to the passive piece (63) is formed in the main body (48) of the lock body (34),
The passive piece (63) of the relay frame (55) protrudes above the main body (48) through the escape groove (50) and contacts the adjustment ring (54). The date stamp with the lock described in one. The printing unit (2) is supported by the main case (7) so as to be vertically displaceable between the lower printing position and the upper date change position, and between the printing unit (2) and the main case (7). It is pushed up and biased toward the date change position by the arranged spring (25),
An adjustment window (9) for exposing the adjustment dial (22) displaced to the date change position is opened in the middle of the cylindrical wall of the main case (7),
A pair of regulating legs (65) are integrally provided on the relay frame (55),
In a state where the lock unit (32) is unlocked and the print unit (2) is displaced to the date change position, the restriction leg (65) is received by the upper opening edge of the adjustment window (9), and the print unit (2 The date stamp with the lock according to claim 6, which restricts the main case (7) from exiting beyond the date change position. A lock unit (32) composed of a cylinder lock is fastened to the end wall of the fastening boss (16) with a first nut (44) screwed into a male screw (41) of the lock case (37),
The lock body (34) is engaged with the operation shaft (33) provided integrally with the inner cylinder of the lock unit (32) so as not to rotate relative thereto, and is fixed by the second nut (45) screwed into the operation shaft (33). The date stamp with a lock | rock as described in any one of Claim 4 to 7. A fixed printing body (3) having a marking face holder (26) and a rubber printing body (27) fixed to its lower surface is detachably attached to the lower end of the main case (7),
A date window (28) through which the printing belt (24) is put in and out of the fixed printing body (3) and a replacement window (29) to which the replacement mark (70) is attached and detached are opened.
The replacement mark (70) includes a name printed body (71) and a holder (72) for mounting the name printed body (71) to the replacement window (29).
The date stamp for locking according to any one of claims 1 to 8, wherein the holder (72) is detachably attached to the replacement window (29) from the upper surface side of the fixed printing body (3).

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