Seal judgment

Abstract

The present invention provides a stamp in which the ink-absorbing cartridge can be replaced, but the stamp surface unit containing the cartridge will not detach due to unexpected force. [Solution] The stamp consists of a stamp surface unit 60 equipped with a printing body 90 having a stamp surface at its lower part, an ink-absorbing body 53 that supplies ink to the printing body 90, a cartridge 50 that holds the ink-absorbing body 53 and is housed in the stamp surface unit 60, and a main body 40 to which the stamp surface unit 60 can be attached. A reinforcing member 70 is provided to prevent deformation of the mounting portion 45 between the stamp surface unit 60 and the main body 40, thereby preventing the stamp surface unit 60, which houses the cartridge 55, from coming off due to unexpected force.

Description

Technical Field

[0001] The present invention relates to an inkpad that can replace an ink reservoir that supplies ink to an ink-imprinting body.

Background Art

[0002] Conventionally, an inkpad that supplies ink to an ink-imprinting body made of a porous material and enables stamping is known, and it is common to incorporate an ink reservoir that supplies ink to the ink-imprinting body. When replenishing ink to these, there is a method of directly dropping ink onto the ink-imprinting body, but it is difficult to know the appropriate amount of ink, and as a result of dropping too much ink, there are problems such as the print bleeding.

[0003] In order to solve such problems, in recent years, a method of replacing the ink reservoir has been used. When replacing, only the ink reservoir may be replaced, but since the part touched by the ink reservoir is contaminated with ink, an inkpad equipped with a cartridge that holds the ink reservoir and can replace the ink reservoir without direct contact by replacing the cartridge is known.

[0004] On the other hand, for a cartridge replacement type inkpad, since the cartridge is attached and detached from the main body of the inkpad during replacement, it is necessary to disassemble the inkpad to some extent. Therefore, a structure that allows the user to easily disassemble the inkpad is required, but if the disassembly is made too easy, the cartridge may come off the inkpad due to an unexpected force such as dropping, and if there is ink remaining in the ink reservoir, there is a risk of ink leakage.

[0005] In order to solve such problems, an inkpad has been invented as shown in Patent Document 1, in which a flexible locking claw piece is provided on the cartridge, and a bulging portion that restricts the movable region of the locking claw piece is provided when unlocking. However, the inkpad described in Patent Document 1 needs to leave a certain movable region for the locking claw piece for cartridge replacement, and there is still an insufficient point as a countermeasure to prevent disassembly due to unexpected force.

Prior Art Documents

[0006] [Patent Document 1] Utility Model Registration No. 3236353 Gazette [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] The objective of the present invention is to solve the above-mentioned problems of the conventional methods and to provide a stamp in which the cartridge can be replaced, but the stamp surface unit containing the cartridge does not come off due to unexpected force. [Means for solving the problem]

[0008] The present invention, made to solve the above problems, is a stamp comprising a stamp surface unit having a printing body having at least one stamp surface at its lower part, an ink-absorbing body that supplies ink to the printing body, a cartridge that holds the ink-absorbing body and is housed in the stamp surface unit, and a main body on which the stamp surface unit can be attached, characterized in that it is provided with a reinforcing member that prevents deformation of the portion of the stamp surface unit that is attached to the main body.

[0009] As described in claim 2, the stamp surface unit may have a recess consisting of a groove or hole on its side surface, and the main body may have a protrusion that fits into the recess.

[0010] Furthermore, as described in claim 3, the reinforcing member can be integrally formed with the main body.

[0011] Furthermore, as described in claim 4, the main body may have a window opening formed such that the upper end of the stamp surface unit is exposed when the stamp surface unit is attached. [Effects of the Invention]

[0012] The present invention includes a reinforcing member at the mounting portion between the stamp surface unit, which houses the cartridge, and the main body. This prevents the stamp surface unit from detaching from the main body even if unexpected force is applied, and avoids the risk of the cartridge deforming and the ink-absorbing material falling out.

[0013] As described in claim 3, if the reinforcing member is integrally formed with the main body, the effort required during disassembly and assembly can be reduced. Also, as described in claim 4, if a window hole is formed in the main body that exposes the upper end of the stamp surface unit, the stamp surface unit can be removed by pushing the cartridge out through the window hole, even if the fitting strength of the mounting part is high. [Brief explanation of the drawing]

[0014] [Figure 1] This is a front view of the stamp of the embodiment and its cross-sectional view AA. [Figure 2] This is a side view of the stamp of the embodiment and a cross-sectional view of its BB. [Figure 3] This is an exploded perspective view of the stamp of the embodiment. [Figure 4] This is an exploded perspective view of the stamp of the embodiment. [Figure 5] This is an exploded perspective view of the stamp of the embodiment. [Figure 6] These are the front view, top view, rear view, side view, and cross-sectional view of the main unit. [Figure 7] This is a front view with a portion of the holder cut out. [Figure 8] This is an enlarged cross-sectional view of the main part. [Figure 9] These are front view, top view, rear view, and side view of the detachable reinforcing member. [Figure 10] This is a cross-sectional view showing the stamped state. [Modes for carrying out the invention]

[0015] (Overall structure) Preferred embodiments of the present invention are described below. FIG. 1 is a front view of the seal of the embodiment and its cross-sectional view taken along line A-A, FIG. 2 is a side view of the seal of the embodiment and its cross-sectional view taken along line B-B. FIGS. 3, FIG. 4, and FIG. 5 are exploded perspective views thereof.

[0016] In FIGS. 1 and 2, reference numeral 10 denotes a slider having a rectangular cylindrical outer wall 11. At the center of the upper surface of the slider 10, a cylindrical portion 12 protrudes upward higher than the upper end of the cylindrical outer wall 11. An annular groove 13 is formed around the lower part of the cylindrical portion 12 at a position lower than the upper end of the cylindrical outer wall 11, and the cylindrical wall 14 on the outer periphery of the annular groove 13 reaches the upper end of the cylindrical outer wall 11.

[0017] Reference numeral 20 denotes a holder positioned above the slider 10. As shown in FIG. 2, the holder 20 includes a tapered outer wall 21 that gently expands downward and a central cylindrical portion 22 formed at the center thereof. As shown in FIG. 7, vertically long cutouts 28 are formed on both sides of the central cylindrical portion 22.

[0018] The upper part of the holder 20 is largely expanded and its upper end surface is an inclined seal surface display label holding surface 23. Further, a lens 24 is mounted above it so that the seal surface display label 25 placed on the seal surface display label holding surface 23 can be enlarged and visually recognized from above. The seal surface display label 25 displays the figure or character of the seal surface to be stamped by this seal.

[0019] As shown in FIG. 2, the holder 20 is vertically movable with respect to the slider 10 in a state where its central cylindrical portion 22 is inserted into the cylindrical portion 12 of the slider 10 and its tapered outer wall 21 is inserted into the annular groove 13 of the slider 10. A holder spring 26 that elastically urges the holder 20 upward is disposed inside the annular groove 13 of the slider 10. The lower end of the holder spring 26 abuts against the bottom of the annular groove 13 of the slider 10, and the upper end of the holder spring 26 abuts against the inner lower surface of the holder 20. The holder spring 26 holds the holder 20 in the upper position shown in FIGS. 1 and 2 when no external force is applied. A protrusion 27 is formed at the inner upper end of the central cylindrical portion 22.

[0020] This stamp is equipped with a cap 16, and under normal circumstances, the lower end of the slider 10 can be placed inside the cap 16 to hold it upright as shown in Figures 1 and 2.

[0021] (Main structure) As shown in Figures 3 and 4, the main body 40, cartridge 50, and stamp surface unit 60 are housed inside the rectangular cylindrical outer wall 11 of the slider 10. These components move together as a single unit during stamping, allowing them to move up and down inside the cylindrical outer wall 11 of the slider 10. The stamp surface unit 60 is rectangular in shape, and a stamp body 90, held by a stamp body retainer 80, is incorporated below it. The stamp body retainer 80 is rectangular in shape and holds the four sides of the stamp body 90. The stamp body 90 is made of a porous material, and its lower surface is the stamp surface 91.

[0022] As shown in Figures 3 and 5, positioning protrusions 81 are provided at the four corners of the upper part of the print body retainer 80, and protruding pieces 83 with horizontally elongated engagement holes 82 are provided at the upper parts of two opposing sides. These positioning protrusions 81 and protruding pieces 83 are in close contact with the outer surface 61 of the rectangular frame-shaped print surface unit 60. The print body retainer 80, which holds the print body 90, is mounted below the print surface unit 60 by fitting the elastic protruding pieces 62 formed on the opposing outer surface 61 of the print surface unit 60 into the engagement holes 82 formed on the protruding pieces 83 of the print body retainer 80.

[0023] A cartridge 50 is housed inside the rectangular frame-shaped stamp unit 60. As shown in Figure 5, the cartridge 50 is also rectangular frame-shaped and has a top surface 51, in which through holes 52 are formed. In this embodiment, four rectangular through holes 52 are formed, but the number and shape of the through holes 52 are not limited to this. An ink-impregnated ink-storage body 53 is held in the space formed below the top surface 51. As shown in Figures 1 and 2, the lower surface of the ink-storage body 53 is in close contact with the upper surface of the printing body 90 and supplies ink to the printing body 90. As shown in Figure 5, multiple ribs 56 are provided protruding from the inner surface of the peripheral wall of the cartridge 50, allowing the ink-storage body 53 to be pressed into place.

[0024] As shown in Figure 5, a projection 54 is provided on the upper side of the cartridge 50. Although the lower side is hidden in Figure 5, the projection 54 is provided on two opposing sides. In addition, elongated recesses 55 are formed on the upper ends of the other two opposing sides of the cartridge 50. On the other hand, elongated slit-shaped recesses 63 are formed on the two opposing outer surfaces 61 of the stamp surface unit 60, and elongated recesses 64 are formed on the upper ends of the other two opposing sides. The cartridge 50 is housed inside the stamp surface unit 60 with its projection 54 fitted into the elongated recesses 64 of the stamp surface unit 60.

[0025] In this way, the stamp surface unit 60 is fitted with a print body retainer 80 that holds the print body 90 and a cartridge 50 that holds the ink absorber 53, and this stamp surface unit 60 is then attached to the bottom surface of the main body 40.

[0026] (Attachment structure to the main unit) Figure 6 shows the shape of the main body 40. The main body 40 has a cylindrical projection 42 at the top center of a rectangular top plate 41, which is inserted into the central cylindrical portion 22 of the holder 20. A deep slit 43 is formed at the top of this cylindrical projection 42 to provide flexibility, and a pair of wedge pieces 44 are provided protruding from the top of the cylindrical projection 42. As shown in Figure 2, the main body 40 is attached to the bottom of the holder 20 by inserting the cylindrical projection 42 into the central cylindrical portion 22 of the holder 20 and engaging the wedge pieces 44 at their upper ends with a vertically elongated notch 28 formed in the central cylindrical portion 22 of the holder 20. Figure 7 shows the vertically elongated notch 28 formed in the central cylindrical portion 22 of the holder 20.

[0027] As described above, the wedge piece 44 of the cylindrical projection 42 of the main body 40 is engaged with the inside of the elongated notch 28 formed in the central cylindrical portion 22 of the holder 20, so that the main body 40 does not detach from the holder 20 and fall during use. As shown in Figure 2, a stamping spring 29 is provided between the upper end of the cylindrical projection 42 of the main body 40 and the holder 20, and under normal circumstances the main body 40 is held in the position shown in Figure 2, that is, in the position where the wedge piece 44 is in contact with the lower end of the elongated notch 28 formed in the central cylindrical portion 22.

[0028] As shown in Figure 6, mounting portions 45 for attaching the stamp surface unit 60 are formed on two opposing sides of the main body 40. The mounting portions 45 are formed on the outer wall 46 surrounding the top plate 41, and as shown in Figure 8, the lower end is an inwardly facing hook-shaped protrusion 47, and both sides of it are cut out as shown in Figure 6 to give the mounting portions 45 flexibility.

[0029] As shown in Figure 8, the stamp surface unit 60 is inserted below the top plate 41 of the main body 40, and the protrusion 47 of the mounting portion 45 of the main body 40 is fitted into the horizontally elongated slit-shaped recess 63 of the stamp surface unit 60. In this way, the stamp surface unit 60 is mounted below the top plate 41 of the main body 40. However, if left as is, the stamp surface unit 60 may come off the main body 40 when subjected to unexpected force. Therefore, in this invention, a reinforcing member 70 is formed on the lower surface of the top plate 41 of the main body 40 to prevent deformation of the mounting portion 45. As shown in Figures 5 and 6, the reinforcing member 70 in this embodiment is a T-shaped projection formed on the lower surface of the top plate 41, and its tip is located close to the inner surface of the horizontally elongated slit-shaped recess 63 of the stamp surface unit 60. This prevents deformation of the mounting portion 45 even when subjected to unexpected force, and prevents the stamp surface unit 60 from falling off.

[0030] In this embodiment, as shown in the lower left of Figures 5 and 6, three small ribs 74 are provided protruding from the outside of the surface corresponding to the horizontal bar of the T-shape of the reinforcing member 70. If these ribs 74 were absent, the pressing force of the reinforcing member 70 would become too strong, making it difficult to remove the stamp surface unit 60. However, by providing these ribs 74, the pressing force on the stamp surface unit 60 can be adjusted. Furthermore, since the force is distributed across each rib 74, the pressing force can be made more stable than if the ribs were used individually. In Figure 5, the ribs 74 are formed on the outer surface of the reinforcing member 70, but as shown in the right half of the lower left of Figure 6, the same effect can be obtained by providing the ribs 74 protruding from the inner surface of the main body 40 facing the reinforcing member 70.

[0031] Furthermore, if the reinforcing member 70 prevents the stamp surface unit 60 from being removed from the main body 40, then the cartridge 50 cannot be replaced. Therefore, as shown in Figures 3 and 8, a window hole 48 is formed in the top plate 41 of the main body 40 so that the upper end of the mounted stamp surface unit 60 is exposed. By providing this window hole 48, deformation of the mounting part 45 during cartridge replacement is permitted, and the stamp surface unit 60 can be separated from the main body 40 by forcibly pushing the hook-shaped protrusion 47 outward.

[0032] In the embodiment described above, a T-shaped reinforcing member 70 is integrally formed on the lower surface of the top plate 41 of the main body 40. However, as shown in Figure 9, a separate reinforcing member 71 can also be used, which is molded separately. This separate reinforcing member 71 has an insertion projection 72 for the top plate 41 of the main body 40 in the center and T-shaped arms 73 on both sides. The function of this separate reinforcing member 71 is the same as that of the reinforcing member 70, and it prevents the stamping unit 60 from falling off the mounting part 45 even when subjected to unexpected force. Using such a separate reinforcing member 71 has the advantage of simplifying the mold structure for molding the main body 40, although the number of parts increases. The ribs 74 described above can also be provided on this separate reinforcing member 71.

[0033] In the above embodiment, a reinforcing member 70 is provided on the main body 40 side to prevent deformation of the mounting portion 45 of the stamp surface unit 60 with the main body 40. However, this reinforcing member 70 can also be provided on the stamp surface unit 60 side which houses the cartridge 50. In that case, for example, a reinforcing member 70 that rises upward can be formed at the end of the top surface 51 of the cartridge 50.

[0034] As shown in Figures 5 and 6, the lower surface of the top plate 41 of the main body 40 has protrusions 49 that correspond to the through holes 52 formed in the top surface 51 of the cartridge 50. These protrusions 49 penetrate the through holes 52 formed in the top surface 51 of the cartridge 50 and press against the upper surface of the ink-absorbing body 53 when stamping. This supplies ink to the printing body 90 and also applies pressure to the printing body 90, resulting in a clear imprint. In this embodiment, if there are multiple through holes 52 in the cartridge 50 and multiple protrusions 49 in the main body 40, making them correspond to each other makes it easier to determine the orientation in which to install the cartridge 50 into the main body 40.

[0035] (How to use) The method of using the stamp configured in this way is described below. Normally, the stamp is placed upright on a desk with the lower end of the slider 10 resting inside the cap 16, as shown in Figures 1 and 2. Even in this state, the ink absorber 53 held in the cartridge 50 is in close contact with the upper surface of the printing body 90 and supplies ink to the printing body 90. The user checks the stamp surface display label 25 through the lens 24, selects the stamp with the design they want to imprint, and removes the cap 16. However, in this state, the printing surface 91 of the printing body 90 is slightly higher than the lower end of the slider 10, so even if the stamp is placed on the paper, no imprinting will occur.

[0036] Next, the user grasps the top of the holder 20 and pushes it down against the slider 10. As shown in Figure 10, the holder 20 descends while compressing the holder spring 26 and the stamping spring 29, and the lower end of the tapered outer wall 21 of the holder 20 comes into contact with the bottom surface of the annular groove 13 of the slider 10. In this state, the main body 40 is springed downward by the stamping spring 29, and the printing body 90 is pressed against the paper surface to make an impression. By adding a stamping spring 29 in addition to the holder spring 26 in this way, it is possible to release the force applied after the printing surface 91 comes into contact with the paper surface, and a clear impression can be obtained. Furthermore, damage to the printing body retainer 80 can also be prevented.

[0037] During stamping, multiple protrusions 49 formed on the underside of the top plate 41 press against the upper surface of the ink-absorbing body 53. This supplies ink to the printing body 90 and applies pressure to the entire printing body 90, resulting in a clear imprint. After that, when the downward pressure on the holder 10 is stopped and the holder 10 is released, the holder 10 rises to the initial position shown in Figures 1 and 2 by the holder spring 26 and the stamping spring 29.

[0038] In this way, there is a possibility that the user may accidentally drop the stamp while repeatedly making impressions. With conventional stamps, the stamp surface unit 60 containing the cartridge 50 could detach from the stamp when subjected to a fall or other unexpected force. However, the stamp of the present invention is equipped with a reinforcing member 70 that prevents deformation of the mounting part 45, which is used to attach the stamp surface unit 60 containing the cartridge 50 to the main body 40. Therefore, even if an unexpected force is applied, the stamp surface unit 60 is prevented from detaching from the main body 40.

[0039] Furthermore, if the ink in the ink-absorbing body 53 decreases as a result of repeated stamping, the holder 20 can be firmly pressed to expose the stamp surface unit 60 from the lower end of the slider 10, and the stamp surface unit 60 can be separated from the main body 40 by pinching the side walls 61 of the stamp surface unit 60 with your fingertips and pulling it firmly downwards. Then the cartridge 50 can be removed from the stamp surface unit 60 and replaced with a new cartridge without getting your hands dirty.

[0040] In the embodiment described above, the main body 40 is structured in such a way that it cannot be easily separated from the holder 10. However, the main body 40 can also be structured in such a way that it can be separated from the holder 10. In that case, the stamp surface unit 60 can be easily separated from the main body 40 by pushing it out through the window hole 48 formed in the top plate 41 of the main body 40.

[0041] As described above, the stamp of the present invention allows for the replacement of the cartridge 50, and moreover, prevents the stamp surface unit 60 from detaching from the main body 40 even if unexpected force is applied. [Explanation of Symbols]

[0042] 10 Sliders 11. Cylindrical outer wall 12 Cylindrical section 13 Annular groove 14 Cylindrical wall 16 caps 20 holders 21 Tapered exterior wall 22 Central cylindrical section 23. Stamp surface display label holding surface 24 lenses 25 Stamp surface display label 26 Holder Spring 27 Protrusion 29 Stamping spring 40 Main unit 41 Top plate 42 Cylindrical projections 43 slits 44 wedge pieces 45 Mounting part 46 Exterior Wall 47 hooks 48 Window holes 49 Convex part 50 cartridges 52 Ceiling surface 52 Through hole 53 Ink absorber 54 Projection piece 55 Elongated recess 56 Ribs 60 stamp surface units 61 External surface 62 Elastic projection 63 slits 64 Elongated recess 70 Reinforcement member 71 Separable reinforcing member 72 Insertion projection 73 T-shaped arms 74 Ribs 80 Printer font retainer 81 Positioning protrusions 82 Horizontally elongated engagement holes 83 Projection piece 90 Printing Fonts 91 Seal face

Claims

1. A stamp comprising a stamp surface unit having a printing body having at least one stamp surface at its lower part, an ink-absorbing body for supplying ink to the printing body, a cartridge for holding the ink-absorbing body and housed in the stamp surface unit, and a main body on which the stamp surface unit can be attached, wherein the stamp is further characterized by comprising a reinforcing member for preventing deformation of the portion of the stamp surface unit that is attached to the main body.

2. The stamp according to claim 1, characterized in that the stamp surface unit has a recess consisting of a groove or hole on its side surface, and the main body has a protrusion that fits into the recess.

3. The stamp according to claim 1 or 2, characterized in that the reinforcing member is integrally formed with the main body.

4. The stamp according to claim 1 or 2, characterized in that the main body has a window hole formed so that the upper end of the stamp unit is exposed when the stamp unit is attached.

Images