JPS5830696Y2 - stamp - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stamp having a printed body made of a porous stamp material.

In recent years, porous foams containing liquid ink have been developed and are becoming increasingly widely used.

The above-mentioned porous foam is usually made of an elastic rubber material with low hardness, and is either simply fixed to the stamp body, or is fixed to the stamp body and has a sliding body around its outer periphery to buffer the pressure applied to the printing surface. there were.

With the above-mentioned stamps, when stamping, the density of the stamp may become uneven or the thickness of the stamped characters may become uneven due to various factors such as how the stamper applies force, stamping time, stamping speed, and how the stamp is stamped. There was a problem that the pod areas (sizes) were different.

In addition, it has been proposed to use two springs to buffer the force when a seal is stamped with excessive force, but there is a problem that the stamp smudges if the stamping time is long.

This invention is based on the individuality of the stamper, condition, method of stamping, etc.
To provide a seal in which the quality and dignity of the seal impression are not affected and the quality and dignity of the seal impression are stable, and to eliminate the above-mentioned drawbacks.

The present invention is characterized in that the combination of the aperture arm member and the coil spring allows printing to be performed under almost the same conditions.

Hereinafter, embodiments of the present invention will be described based on the drawings.

In FIGS. 1 and 2, 1 is a seal.

Reference numeral 2 denotes a print body holding frame, which is composed of a cylindrical small diameter part 3 and a large diameter part 4. A porous printing material 5 having open cells is held at the lower end of the large diameter part 4, and the peripheral edge is held by a holding metal fitting 6. It is held down and fixed.

Reference numeral 7 denotes a porous ink storage material having open cells, and the printed body holding frame 2 is placed so that its lower end surface is in contact with the upper end surface of the printed material 5.
It's decorated inside.

Therefore, the pores of the printing material 5 communicate with the pores of the ink storage material 7.

An engagement member 8 is partially screwed onto the upper end of the printed body holding frame 2 (small diameter portion 3), and is composed of a cylindrical threaded portion 9 and a strip-shaped engagement piece 10.

The lower half of the threaded portion 9 is screwed into the small diameter portion 3, and the upper half has approximately the same diameter as the large diameter portion 4, and a fixing plate 11 having an outer diameter slightly smaller than the inner diameter of an outer cylinder 12, which will be described later, is screwed onto the upper half. .

12 is a cylindrical outer cylinder, and an annular protrusion 1 is provided approximately on the inner circumference of the outer cylinder.
3 is provided in a protruding manner, and a circumferential protrusion 14 is provided in a protruding manner on the upper outer periphery thereof.

The annular protrusion 13 is slidably engaged in the circumferential recess 15 formed by the printed body holding frame 2 and the fixing plate 11 in the axial direction.

A lower coil spring 16 is interposed between the annular protrusion 13 and the fixed plate 11 (inside the circumferential recess 15), and constantly urges the outer cylinder 12 downward.

Reference numeral 17 denotes a cylindrical gripping body, and an upper body 18 and a lower body 19 are screwed together.

The upper body 18 is formed in a double structure of a cylindrical outer wall body 20 and an inner wall body 21, and axial guide grooves 22 and 22 are opposed to each other on the inner periphery of the inner wall body 21 and extend from the lower end portion 36 to a predetermined height. It is located on the side.

Reference numeral 23 denotes a cylindrical sliding body that is slidably inserted into the inner wall body 21, and has a coaxial small-diameter protrusion 24 at the upper end, and a substantially central groove 25 extending upward from the lower end surface. are formed, forming two protrusions 26 and 26.

Reference numeral 27 denotes a fork-shaped aperture arm member, which is located within the slot 25 of the sliding body 23, and has a base 28 fixed to the sliding body 23 by a fixed shaft 29, and an arm 30 that is connected to the base 28 and extends downward. , 30 extend outward toward the bottom and protrude from the outer periphery of the sliding body 23.

Both ends of the fixed shaft 29 are hemispherical, protrude slightly from the sliding body 23, and engage with guide grooves 22, 22 of the inner wall body 21.

In addition, when the slider 23 moves upward, the outer surfaces 35, 35 of the arms 30, 30 are restricted by the lower end surface of the inner wall 21, and the arms 30, 30 are housed in the slot 25. , when sliding downward the arm 30.3
0 protrudes from the split groove 25, which has a spring characteristic.

Reference numeral 31 denotes an upper coil spring, which is housed within the inner wall body 21.

The lower body 19 has a flange-like locking portion 32 projecting inward at its lower end, and is configured to engage with the circumferential protrusion 14 of the outer cylinder 12.

Note that with the grip body 17 attached to the outer cylinder 12,
The sum of the lengths of the upper coil spring 31 and the aperture arm member 27 is normally set to be slightly shorter than the distance between the inner upper surface of the upper body 18 (grip body 17) and the fixed plate 11.

Reference numeral 33 denotes a stepped engagement portion formed at the tips of the arms 30, 30, which temporarily engages with the upper end portion of the outer cylinder 12 during stamping.

34 is the upper end of the outer cylinder 12.

Note that in order to ensure instantaneous printing, the upper coil spring 31 has a larger elastic force than the lower coil spring 16.

Next, the operation at the time of stamping the above-mentioned seal will be explained.

First, when the grip body 17 is gripped and the tip of the outer cylinder 12 is pressed against an object such as paper, the outer cylinder 12 moves upward against the elastic force of the lower coil spring 16. In this case, Since the elastic force of the upper coil spring 31 that presses the fixed plate 11 via the sliding body 23 (projections 26, 26) is greater than the elastic force of the lower coil spring 16, the fixed plate 1
The printed body holding frame 2 fixed at 1 does not move.

Therefore, the upper end portion 34 of the outer cylinder 12 is connected to the aperture arm member 27.
(See FIG. 3).

If the compression is continued further, the outer cylinder 12 will resist the elastic force of the upper coil spring 16 and will cause the aperture arm member 27 and therefore the sliding body 23 to slide upward.

When the sliding body 23 rises to a certain extent, the outer surface 35.3 of the arm 30.30 in the aperture arm member 27
5 is regulated by the lower end surface of the inner wall body 21 and the arm 30.3'
l rotates radially inward and enters into the split groove 25.

That is, the aperture arm member 27 is shortened in the radial direction.

(See Figure 4). This rotation releases the engagement between the engagement portion 33.33 of the arm 30.30 and the upper end portion 34 of the outer cylinder 12.

Then, due to the elastic force of the upper coil spring 31, the sliding body 23 is caused to slide downward together with the aperture arm member 27, and the protruding piece 26 of the sliding body 23 engages with the fixed plate. 11 Therefore, the printed body holding frame 2 is moved downward.

Therefore, at this moment, the equilibrium state is broken and the print body holding frame 2 moves downward with respect to the outer cylinder 12, so the print material 5
Printing is performed with the printing surface 37 protruding from the tip of the outer cylinder 12.

Immediately after printing, the tip of the outer cylinder 12 protrudes beyond the printing surface 37 of the printing material 5 due to the elastic force of the lower coil spring 16.

In this way, printing is performed instantaneously, and the printing material 5 is protected by the outer cylinder 12.

When the tip of the outer tube 12 is separated from the object, it returns to its original state (see FIGS. 1 and 2) by the action of the upper and lower coil springs 16.31.

As described above, the present invention is configured so that printing can be performed instantaneously and stably, so that a stable impression can always be obtained.

Therefore, the spring pressure, printed body (porous foam)
If the material, hardness, etc. of the seal are properly set in advance, it has an excellent practical effect in that a stamp of stable quality can be obtained regardless of the pressing method.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a cross-sectional front view of the stamp, FIG. 2 is a cross-sectional side view of the stamp, and FIGS. 3 and 4 are diagrams showing the state of the stamp during the stamping operation. It is a figure similar to figure 1. 1...Seal stamp, 2...Printed body holding frame, 5
...Printing material, 7...Ink storage material, 1
1...Fixing plate, 12...Outer cylinder, 16.
... lower coil spring, 17 ... gripping body, 20 ... outer wall body, 21 ... inner wall body, 23 ... ... sliding body, 27...Aperture arm member, 30...Arm, 31...
Upper coil spring, 37...Printed surface.

Claims (1)

[Scope of utility model registration request] An outer cylinder is slidably fitted in the axial direction to a print body holding frame with a porous print body attached to the lower end thereof, and an outer cylinder having an outer diameter slightly larger than the inner diameter of the outer cylinder is attached to the upper end of the print body holding frame. A small fixing plate is attached, and a lower coil spring is interposed between the outer cylinder and the fixing plate, and the lower coil spring causes the outer cylinder to protrude downward with respect to the print body holding frame. While being constantly energized, a gripping body is slidably fitted on the outside of the outer cylinder, a sliding body having an aperture arm member is disposed within the gripping body so as to be movable up and down, and the aperture arm member has a radius The arm is extendable and retractable in the direction, and the tip of the arm engages with the upper end of the outer cylinder, and an upper coil spring is interposed between the upper end of the sliding body and the gripping cylinder, and the gripping cylinder An inner wall body is disposed inside the aperture arm member for radially shortening the aperture arm member to position the arm tip of the aperture arm member on the fixing plate during stamping, and the elastic force of the upper coil spring is applied to the lower coil spring. A seal characterized by being larger than a spring.