Seal judgment

Abstract

To provide a stamp that suppresses misalignment of printed characters. [Solution] The stamp 1 has a stamp surface 31 on the bottom side of the housing 10, and comprises a printing body 30 with a stamp surface 31 and a retainer 20 that supports the printing body 30, wherein the retainer 20 is configured to have a support portion 22 that supports the stamp surface 31 from the bottom side and a protrusion 22a that protrudes from the support portion 22 and fits onto the stamp surface 31.

Description

Technical Field

[0001] The present invention relates to seals.

Background Art

[0002] Conventionally, a seal in which ink is supplied to a printing body made of a porous body to enable stamping is known and is used in various fields. In such a seal, it is common for the printing body to be fixed to the seal body by a support member such as a retainer.

[0003] Patent Document 1 describes a seal in which a columnar printing body having printing on its lower surface is inserted and attached from below into a cylindrical storage portion. The seal described in Patent Document 1 is provided with a support member (receiver 40) that supports the lower surface of the printing body to prevent it from falling off. Also, Patent Document 1 describes that by engaging an engaging portion formed on the outer peripheral surface of the printing body with a locking portion formed on the inner wall of the storage portion, rotation of the printing body during stamping is suppressed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described in Patent Document 1, in conventional seals, measures are taken to prevent the printing body from falling off and rotating during normal use. However, when the inventor conducted a drop impact test on the seal, in the conventional configuration, events such as the printing body shifting due to the impact of the drop and the printing surface being distorted, or a part of the printing body coming off the support member occurred. In particular, when the seal fell with the printing surface facing sideways, the above events were likely to occur, and it was found that conventional seals were insufficient in countermeasures against impacts from the side direction.

[0006] Furthermore, it was found that, particularly when the printing element 91 is relatively thin relative to the area of ​​the stamp surface 92, as shown in Figure 6, problems are likely to occur where a part of the printing element 91 protrudes from the retainer 93 or the stamp surface 92 becomes distorted when the stamp is subjected to external force.

[0007] The objective of the present invention is to solve the above-mentioned conventional problems and to provide a stamp in which misalignment of the printed characters is suppressed. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a stamp having a stamp surface on the bottom side of the housing, comprising a printing body with a stamp surface and a retainer that supports the printing body, wherein the retainer comprises a support portion that supports the stamp surface from the bottom side and a protrusion that protrudes from the support portion and fits into the stamp surface.

[0009] Furthermore, it is preferable that the protrusion fits snugly against the stamp surface without any gaps.

[0010] Furthermore, it is preferable that the protrusions are fitted perpendicularly to the stamp surface.

[0011] Furthermore, it is preferable that the stamp surface includes a recess into which the convex portion of the retainer fits. [Effects of the Invention]

[0012] This invention makes it possible to provide a stamp in which misalignment of the printed characters is suppressed. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of the stamp of the embodiment, seen from the bottom side. [Figure 2] This is an exploded perspective view of the stamp of the embodiment. [Figure 3] This is a cross-sectional view of the seal of the embodiment, with a portion of it cut away. [Figure 4]This is an exploded perspective view of the retainer, print body, and print surface unit body of the embodiment. [Figure 5] This diagram schematically shows the mating state between the retainer and the print body of the embodiment. [Figure 6] This diagram shows a situation where the printed characters are misaligned in a conventional stamp. [Modes for carrying out the invention]

[0014] The following describes embodiments for carrying out the invention. As shown in Figure 1, the stamp 1 of the embodiment is a stamp having a stamp surface 31 on the bottom side (lower side in the figure) of the housing 10. The stamp 1 of the illustrated example is suitably used as a stamp for stamp rallies or a commemorative stamp. In this specification, as shown in Figure 1, the side having the stamp surface 31 (the side that comes into contact with the object to be stamped) is referred to as the lower side of the stamp 1, and the side opposite to the lower side is referred to as the upper side of the stamp 1.

[0015] The housing 10 of the embodiment is a hollow member having a substantially cubic appearance, as shown in Figures 1 and 2. The housing 10 of the embodiment is made of synthetic resin, but is not limited to this. Inside the housing 10 of the embodiment, a stamp surface unit U (details to be described later), including a stamp body 30 with a stamp surface 31, is housed so as to be slidable vertically relative to the housing 10.

[0016] A handle 11, which serves as an operating grip, is mounted on the upper part of the housing 10 so as to be slidable vertically relative to the housing 10. In this embodiment, the handle 11 is always biased upward by a spring S shown in Figure 3. A stamp surface unit U is also connected to the handle 11, and when the operator pushes down the handle 11 against the biasing force of the spring S, the stamp surface unit U lowers and makes a stamp.

[0017] (Stamp surface unit) As shown in Figure 2, the stamp surface unit U of the embodiment comprises a retainer 20, a printing element 30, a stamp surface unit body 40, a storage element 50, and a stamp surface unit lid 60.

[0018] The printing unit U of the embodiment has a structure in which a printing body 30 made of a porous body and a storage body 50 arranged above it are held in a printing unit main body 40 which is a case body. As shown in FIG. 2, the printing unit main body 40 of the embodiment is a rectangular frame-shaped case having openings at the top and bottom.

[0019] As the storage body 50, various known materials capable of holding ink inside can be used. The storage body 50 of the embodiment is housed inside the printing unit main body 40 in a state of being fitted into a storage body cartridge 51 made of synthetic resin (see FIG. 3).

[0020] A printing unit lid portion 60 is fitted on the upper surface of the printing unit main body 40 in which the storage body 50 is housed. The printing unit lid portion 60 in the example shown in FIG. 2 includes a substantially cylindrical shaft portion 61 that protrudes upward from the upper surface. An attachment portion 62 that engages with a receiving portion (not shown) of the handle 11 is formed at the upper end of the shaft portion 61.

[0021] A retainer attachment portion 41 is provided on the outer peripheral surface of the printing unit main body 40 of the embodiment (see FIG. 2). The retainer attachment portion 41 of the embodiment is a plurality of protrusions that protrude outward from the outer peripheral surface of the printing unit main body 40 and engage with a retainer 20 described later.

[0022] A regulating portion 42 is formed on the inner peripheral surface of the printing unit main body 40 of the embodiment. The regulating portion 42 of the embodiment is a portion that protrudes in the diameter-reducing direction from the inner peripheral surface of the unit main body 40. The regulating portion 42 in the illustrated example is provided over the circumferential direction at the lower end side of the inner peripheral surface of the printing unit main body 40. The regulating portion 42 of the embodiment abuts on the upper surface of the printing body 30 described later and regulates the vertical movement of the printing body 30 (see FIG. 3).

[0023] (Printing body) The printing body 30 of the embodiment is a porous body equipped with a printing surface 31. The printing body 30 of the embodiment is a porous rubber stamp material having countless continuous pores, but is not limited to this, and various known materials can be used. As shown in Figures 2 to 4, the printing body 3 of the embodiment has an overall appearance of a roughly flat plate with a roughly rectangular shape when viewed from the bottom, and is equipped with a printing surface 31 on the bottom side. The printing body 3 in the illustrated example is formed with dimensions of approximately 30 mm x 30 mm in length x width and a thickness of approximately 5 mm when viewed from the bottom. The shape and dimensions of the printing body 3 are not limited to this, and for example, it may be roughly circular when viewed from the bottom.

[0024] The stamp surface 31 of the embodiment includes a printing portion 31a and a non-printing portion 31b surrounding the printing portion 31a. As shown in Figure 4, the printing portion 31a of the embodiment is formed as a downward convex portion approximately in the center of the stamp surface 31. In the illustrated example, the printing portion 31a is approximately rectangular in shape when viewed from the bottom and has a recessed groove in the shape of the letter "A" approximately in the center. The printing portion 31a of the embodiment is a porous material from which ink supplied from the storage body 50 can seep out, and when stamped on an object to be stamped, such as paper, a rectangular impression is formed with the letter "A" in white in the center. The shape of the printing portion 31a is not limited to this and may be a convex portion shaped like a letter or design.

[0025] The non-printable portion 31b is the portion of the stamp surface 31 other than the printable portion 31a. The non-printable portion 31b is provided at the end of the stamp surface 31. In the example shown in Figure 4, the non-printable portion 31b is the region from the printable portion 31a to the outer edge E of the stamp surface 31, and has a rectangular frame shape when viewed from below. In this embodiment, the non-printable portion 31b is a horizontal surface perpendicular to the side surface of the printing body 30.

[0026] In the stamp surface 31 of this embodiment, the printing portion 31a is formed to be approximately 25 mm x 25 mm in size, and the width of the non-printing portion 31b is approximately 2 mm. The non-printing portion 31b may be configured to have a different bubble diameter from that of the printing portion 31a.

[0027] Furthermore, the printing body 30 in this embodiment is a porous material in which the bubble diameter and hardness differ between the printing portion 31a and the rest of the body. The hardness of the printing portion 31a in this embodiment is approximately 30° to 40°, while the hardness of the rest of the body is approximately 5° to 20°. As a result, the printing body 30 as a whole is more flexible and easily deformable compared to a typical address and name stamp.

[0028] The non-printable portion 31b may have a recess 32 into which the protrusion 22a of the retainer 20, described later, is fitted. In the example shown in Figure 4, the non-printable portion 31b is provided with a rectangular frame-shaped recess 32 in bottom view, formed along the outer edge E of the printing surface 31. In this embodiment, the recess 32 is a groove surrounding the printing portion 31a, but the shape of the recess 32 is not limited to this, and may be, for example, a plurality of discontinuous depressions or holes.

[0029] (Retainer) The printing element 30 of the embodiment is supported by a retainer 20 and attached to the lower side of the stamp surface unit body 40. The retainer 20 in the example shown in Figures 2 to 4 is a rectangular frame-shaped synthetic resin member with openings at the top and bottom. The bottom surface of the retainer 20 of the embodiment has an opening 21 that exposes the printing part 31a to the outside and a support part 22 that supports the stamp surface 31 from the bottom side, and the overall appearance is frame-like when viewed from the bottom (see Figure 4).

[0030] In this embodiment, the opening area of ​​the opening 21 is slightly larger than the printing portion 31a and smaller than the area of ​​the printing surface 31. As a result, as shown in Figure 3, when the printing body 30 is placed inside the retainer 20 with the printing surface 31 facing downwards, the non-printing portion 31b rests on the support portion 22, and the printing portion 31a is exposed to the outside through the opening 21.

[0031] As shown in Figures 3 to 5, the support portion 22 of the embodiment is a horizontal frame-shaped portion perpendicular to the side surface of the retainer 20. The support portion 22 of the embodiment is provided with a projection 22a that fits onto the stamp surface 31. In the example shown in Figures 3 to 5, the edge of the support portion 22 rises vertically upward to form the projection 22a. In this example, the projection 22a is formed around the entire circumference along the opening 21 and is substantially rectangular in plan view. The shape of the projection 22a is not limited to this and may be, for example, a plurality of discontinuous protrusions. Also, the projection 22a may protrude from the upper surface of the support portion 22 rather than the edge of the support portion 22 (for example, it may be located to the left of the projection 22a shown in Figure 5).

[0032] The height dimension of the protrusion 22a in this embodiment is approximately 1.00 mm. The height dimension of the protrusion 22a is not limited to this, but if the protrusion 22a is too small, the stamp surface 31 may not be able to be sufficiently fixed. It is preferable that the height of the protrusion 22a is approximately 0.75 mm to 3.00 mm.

[0033] The protrusion 22a fits onto the stamp surface 31 of the printing body 30. This ensures that the end of the stamp surface 31 is securely fixed to the retainer 20, resulting in a stamp 1 in which the printing body 30 is less likely to shift even when external force is applied.

[0034] Furthermore, according to this embodiment, the entire non-printable portion 31b, which is the edge of the stamp surface 31, is firmly fixed to the upper surface of the support portion 22. This suppresses the deflection of the stamp surface 31 in the opening 21, and effectively prevents the phenomenon of a part of the non-printable portion 31b escaping from the opening 21 (see Figure 6), even if the stamp body 30 is relatively thin and soft.

[0035] In the examples shown in Figures 3 and 5, the protrusion 22a fits into the recess 32 formed in the non-printable portion 31b of the stamp surface 31. In this embodiment, the outer diameter of the protrusion 22a is formed to be slightly larger than the inner diameter of the recess 32, so that the protrusion 22a is press-fitted into the recess 32. Since the printing body 30 in this embodiment is made of flexible porous rubber, the protrusion 22a fits snugly into the stamp surface 31 without any gaps. With this configuration, the printing body 30 can be securely fixed by the retainer 20.

[0036] Furthermore, the protrusion 22a of the embodiment fits perpendicularly to the stamp surface 31. As a result, in the stamp 1 of the embodiment, lateral displacement of the stamp surface 31 is easily restricted even when an impact is applied from the side.

[0037] Alternatively, instead of providing a recess 22a on the stamp surface 31, the tip of the protrusion 22a may be made pointed, and the protrusion 22a may be inserted into the stamp surface 31 for fitting.

[0038] In this way, by using a fixing structure in which the protrusion 22a is fitted into the stamp surface 31, the printing body 30 can be securely fixed, and the printing body 30 can be easily replaced, for example, due to wear of the stamp surface 31 or a change in design.

[0039] The retainer 20, which houses the printing element 30 inside, is attached to the stamp surface unit body 40 from below. As shown in Figures 2 and 4, the side surface of the retainer 20 in this embodiment is provided with an engaging portion 23 that engages with the retainer mounting portion 41 of the stamp surface unit body 40, and the retainer 20 is fixed to the stamp surface unit body 40 by engaging the two.

[0040] In this embodiment, the printing element 30 is positioned and fixed to the retainer 20 before being attached to the printing surface unit body 40. This makes it possible to suppress misalignment of the printing surface 31 during assembly, even if the printing element 30 is thin and flexible.

[0041] In this embodiment, when the printing body 30 and retainer 20 are attached to the printing unit body 40, as shown in Figure 3, the lower surface of the restricting portion 42 on the inner circumferential surface of the printing unit body 40 comes into contact with the upper surface of the printing body 30. As a result, the non-printing portion 31b of the printing body 30 is sandwiched between the upper restricting portion 42 and the lower support portion 22, restricting the vertical movement of the printing body 30. This configuration is preferable because it further suppresses displacement of the printing body 30.

[0042] The completed stamp unit U is inserted into the housing 10 from below, and the shaft portion 61 of the stamp unit lid portion 60 is fitted and fixed to the handle 11. This completes the assembly of the stamp unit U in the stamp 1. In the stamp 1 of this embodiment, if the housing 10 is held with the bottom surface facing sideways or upward, and the handle 11 is pressed against the biasing force of the spring S, at least a part of the retainer 20 can be exposed from the housing 10. If the retainer 20 is pulled out firmly in this state, the retainer 20 can be removed from the stamp unit body 40, making it easy to perform maintenance such as replacing the print body 30, replacing the ink storage body 50, or refilling the ink.

[0043] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments and can be made into various forms. For example, the present invention is not limited to the stamp 1 equipped with a stamp surface unit U, but may have a structure in which a support member such as a retainer that supports the printed body 30 is directly attached to the stamp body. Also, the present invention is not limited to a self-inking stamp equipped with an absorbent material, but may have a structure in which ink is applied to the stamp surface using an ink pad or stamp pad. [Explanation of Symbols]

[0044] 1 seal 10 cabinets 11 Handle 20 retainers 21 Opening 22 Support part 22a Convex part 23 Engaging part 30 fonts 31 Seal face 31a Print section 31b Non-printing area 32 Convex part E outer edge 40 Stamp surface unit body 41 Retainer mounting section 42 Regulatory Department 50 storage bodies 51 Storage cartridge 60 Stamp surface unit lid 61 Shaft 62 Mounting part

Claims

1. A stamp having a stamp surface on the bottom side of the casing, A typeface with a stamp surface, The system includes a retainer that supports the aforementioned printing element, The aforementioned retainer is, A support portion that supports the aforementioned stamp surface from the bottom side, A stamp comprising a support portion and a protrusion that fits into the stamp surface.

2. The stamp according to claim 1, wherein the protrusion fits snugly onto the stamp surface.

3. The stamp according to claim 1 or 2, wherein the protrusion is fitted perpendicularly to the stamp surface.

4. The stamp according to claim 1 or 2, wherein the stamp surface comprises a recess into which the convex portion of the retainer fits.

Images