JPH09104619A - Tablet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a readily producible tablet readily separable into four and certainly dividable into two parts. SOLUTION: The bottom 2 of a tablet 1 is separated into four zone faces a1 to a4 by two crossing dividing lines 7 and 8, angles θ1 to θ4 between mutually adjoining zone faces a1 and a2, a2 and a3, a3 and a4 and a4 and al with the dividing lines 7 and 8 as boundaries are all made smaller than 180 deg. so as to make the center of the bottom 2 low and the circumference high. In the tablet 1, height h1 at a position at which the dividing line 8 reaches the circumference of the bottom 2 is made higher than height h2 at a position at which the dividing line 8 reaches the circumference of the bottom 2 and plane parts 9 positioned to bestride the dividing line 7 is formed in the vicinity of the position at which the dividing line 7 reaches the circumference of the bottom 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tablet having a score line on the bottom surface for facilitating division.

[0002]

BACKGROUND OF THE INVENTION Medicinal tablets are sometimes required to be accurately and easily divided into two or more pieces according to patient consumption. For this reason, a dividing line for dividing is generally provided on the bottom surface of the tablet. Conventionally, regarding tablets provided with such score lines, for example, Jikken Sho 40
No. -3680 and Jitsukaihei 5-37924 are known.

In Japanese Utility Model Publication No. 40-3680, one dividing line which is orthogonal to each other is provided on one bottom face and the other bottom face of a cylindrical tablet, and each bottom face has a pair of slopes whose valleys are the dividing lines. Disclosed are tablets each formed with a face. The tablet disclosed in JP-B-40-3680 can be divided by placing it on a hard table such as a desk and pressing the center of the tablet from above with a finger. Also, the actual Kaihei 5-3
No. 7924 discloses a tablet in which cross-shaped dividing lines orthogonal to each other are provided on the bottom surface of a cylindrical tablet. The tablet disclosed in Japanese Utility Model Laid-Open No. 5-37924 can be divided into four halves by cutting along the cruciform dividing line.

[0004]

[Problems to be Solved by the Invention]
The tablet disclosed in No. 3680 has a dividing line separately provided on one bottom surface and the other bottom surface of the tablet. Therefore, in order to divide the tablet into four equal parts, the tablet is divided into two halves. , I had to turn the half piece over and press it. However, since the half of a small tablet that is originally divided into two is even smaller, it is considerably complicated to turn it over. Therefore, the tablet disclosed in Japanese Utility Model Publication No. 40-3680 was not easy to divide into four. In addition, this tablet is difficult to manufacture because the score line on one bottom face and the score line on the other bottom face must be exactly orthogonal to each other.

Further, since the bottom surface of the tablet disclosed in Japanese Utility Model Laid-Open No. 5-37924 is flat, it cannot be divided by pressing the tablet from above. Therefore, in order to divide the tablet, it is usually necessary to grasp the tablet with the fingertips of both hands and to break the tablet along the score line with force. Alternatively, actual Kaihei 5-3792
In order to break the tablet disclosed in No. 4 along the score line, a special tool such as a knife or a cutter was required.

The tablet disclosed in Japanese Utility Model Publication No. 40-3680 and the tablet disclosed in Japanese Utility Model Application Laid-Open No. 5-37924 are divided into four parts by a single operation depending on the force. However, it is not always easy to accurately divide into two, which is a problem especially when used by a sick person or an elderly person.

A first object of the present invention is to provide a tablet which is easy to manufacture and can be divided easily. A second object of the present invention is to provide a tablet that can be divided into two parts by one operation, and the half of the divided tablet can be easily divided into four parts.

[0008]

According to a first aspect of the present invention, there is provided a tablet having a pair of bottom surfaces and side surfaces surrounding the periphery of the bottom surfaces, one bottom surface of which intersects. In a tablet divided into four area planes by two score lines, by making the angle of folding between the area planes adjacent to each other with the score line as a boundary, the center of the one bottom surface There is provided a tablet characterized by a low and a high peripheral edge.

According to a second aspect of the present invention, there is provided the tablet according to the first aspect, wherein a slope is formed at a corner portion of the peripheral edge of the bottom surface.

Further, according to claim 3, in the tablet according to claim 1 or 2, one of the two score lines has a height at a position where it reaches the peripheral edge of the bottom surface, and the other score line has a height. There is provided a flat part formed to be higher than the height of the position that reaches the peripheral edge of the bottom surface and in the vicinity of the position where the one dividing line reaches the peripheral edge of the bottom surface.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged perspective view of a tablet 1 according to an embodiment of the present invention. FIG. 2 is an enlarged plan view of the tablet 1. FIG. 3 is an enlarged side view of the tablet 1. FIG. 4 is a cross-sectional view taken along the line AA in FIG.

The tablet 1 has a pair of bottom surfaces 2 and 3 and side surfaces 4 that vertically surround the peripheral edges of the bottom surfaces 2 and 3. Figure 1
4, the tablet 1 is enlarged in each case, but in reality, the diameter of the tablet 1 is usually several mm to several tens of mm, and the height of the tablet 1 is several mm. Usually there is. Further, although the illustrated tablet 1 has a substantially cylindrical shape, it may have a prismatic shape or an elliptic cylindrical shape. Slopes 5 and 6 for preventing the tablet 1 from chipping are formed at the corners of the peripheral edges of the upper and lower bottom surfaces 2 and 3.

On one bottom surface 2 (upper bottom surface 2 in FIGS. 1 to 4), two dividing lines 7 and 8 formed of a V-shaped groove or a U-shaped groove are provided. These secant lines 7 and 8 are orthogonal to each other at the center of the bottom surface 2, and the bottom face 2 is
It is divided by 8 into four area planes a1, a2, a3, a4. These area surfaces a1, a2, a3, a4 are
Both are inclined so as to gradually increase from the center of the bottom surface 2 toward the peripheral edge, and the angle θ1 at which the area surface a1 and the area surface a2 are folded with the dividing line 8 as a boundary and the area surface a2 with the dividing line 7 as a boundary. The angle θ2 of the area surface a3, the angle θ3 of the area surface a3 and the area surface a4 with the dividing line 8 as the boundary, and the angle θ4 of the area surface a4 and the area surface a1 with the dividing line 7 as the boundary Is also less than 180 °. As a result, the bottom surface 2 is formed so that the center is low and the peripheral edge is high as a whole. In the illustrated example, the area surfaces a1, a2, a3, and a4 are all flat surfaces, but may be curved surfaces.

Unlike the bottom surface 2, the other bottom surface 3 (bottom bottom surface 3 in FIGS. 1 to 4) is substantially flat or has a suitable curved surface, and is not provided with secant lines. However, various information such as the weight, the company name, and the type of the tablet 1 may be written or stamped on the bottom surface 3.

As will be understood from FIGS. 3 and 4, in this embodiment, the bottom surface 2 of the tablet 1 has a height h1 at a position where the score line 7 reaches the peripheral edge of the bottom surface 2, and the score line 8 has a bottom surface 2. It is configured to be higher than the height h2 of the position reaching the peripheral edge. In addition, in the vicinity of the position where the dividing line 7 reaches the peripheral edge of the bottom surface 2, the flat surface portion 9 located across the dividing line 7 is provided.
Are formed.

Next, the usage state of the tablet 1 according to this embodiment will be described. First, when dividing tablet 1 into two,
Hard base 10 such as a desk with one bottom surface 2 of tablet 1 facing downward
Place tablet 1 on top. As described above, the bottom surface 2 of the tablet 1 has a height h at the position where the score line 7 reaches the peripheral edge of the bottom surface 2.
1 is configured to be higher than the height h2 of the position where the dividing line 8 reaches the peripheral edge of the bottom surface 2, and thus when the tablet 1 is placed on the table 10 with the bottom surface 2 facing downward as described above. Is
Only the flat surface portion 9 located across the dividing line 7 is in contact with the upper surface of the table 10. Then, in this state, the center of the other bottom surface 3 of the tablet 1 is pressed from above with the finger 11 as shown in FIG. Then, since the folding angle θ1 between the area surface a1 and the area surface a2 and the folding angle θ3 between the area surface a3 and the area surface a4 are both less than 180 °,
At the bottom of the groove of the dividing line 8 provided on the bottom surface 2, stress concentration that pushes and expands the groove occurs. As a result, the tablet 1 is smoothly divided along the dividing line 8, and it becomes possible to easily obtain the two halves 1 ′ of the tablet 1.

On the other hand, FIG. 6 is a side view of the tablet 1 in a direction different from that of FIG. 5 by 90 °. As shown in FIG. 6, when the tablet 1 is divided into two parts, even if the other bottom surface 3 of the tablet 1 is pressed from above, the flat surface portion 9 located across the dividing line 7 becomes the surface of the base 10. Since they abut, the stress concentration as described above does not occur at the groove bottom of the secant 7. Therefore,
When the tablet 1 is divided into two, the tablet 1 is always divided into two along the dividing line 8, and there is almost no fear that the tablet 1 is divided into four by one pressing operation.

Next, when the tablet 1 is divided into four, the half piece 1'obtained by dividing the tablet 1 into two as described above is further pressed with a finger 11 from above as shown in FIG. . Then, the angle θ at which the area surface a1 and the area surface a4 are folded
4 (or the angle θ between the area surface a2 and the area surface a3)
Since 2) is less than 180 °, a stress concentration that pushes the groove is generated at the bottom of the groove of the secant 7 provided on the bottom surface 2. This gives the tablet 1 half 1 '
Can be smoothly divided along the secant line 7, and it becomes possible to easily obtain a small piece 1 ″ obtained by dividing the tablet 1 into four as shown in FIG.

[0019]

EXAMPLE Next, a tablet according to the present invention was actually produced,
The performance was examined. The results of the examples will be described below.

(Example 1) The tablet had a diameter of 9 mm, and slopes inclined by 32 ° with respect to the bottom surface were formed at the peripheral corners of the upper and lower bottom surfaces within a height range of 0.36 mm. One bottom surface was formed so that the center was low and the peripheral edge was high as a whole. In addition, two secant lines orthogonal to each other at the center were provided in a cross shape on the bottom surface. The width of each of the two secant lines is 0.2
V-shaped groove having a base angle of 60 mm and a base angle of 60 mm. Of these two score lines, the height at the position where one score line reaches the peripheral edge of the bottom surface is 0.42 mm higher than the height at the position where the other score line reaches the peripheral edge of the bottom surface. In addition, a flat portion extending over the score line was formed in the vicinity of the position where one score line reaches the peripheral edge of the bottom surface. The range of the plane portion was 1 mm at the maximum from the side surface. In addition, the inclination of the secant was such that one secant was 8 ° and the other secant was 4 ° toward the center from the side surface of the tablet. When the tablet according to Example 1 was actually manufactured under the above conditions and the performance was examined, the tablet could be easily divided into two. Further, the tablet was easily divided into four by pressing the obtained half pieces with a finger.

(Second Embodiment) FIG. 9 is an enlarged plan view of the tablet 1 according to the second embodiment. FIG. 10 is an enlarged side view of the tablet 1. FIG. 11 is a cross-sectional view taken along the line BB in FIG. As shown in the figure, the diameter of the tablet 1 is 9 mm, and the nominal depth (nominal dept
h) is 0.36 mm, and punch depth is 0.
Slopes 5 each inclined by 32 ° with respect to the bottom surface were formed in the range of 32 mm. One bottom surface 2 is formed so that the center is low and the periphery is high as a whole. Also, this bottom surface 2
Further, two secant lines 7 and 8 orthogonal to each other in the center were provided in a cross shape. Each of these dividing lines 7 and 8 is a substantially V-shaped groove having a width of 0.48 mm and a base angle of 60 °. However, the deepest part of the substantially V-shaped groove is not formed with an acute angle, and the radius of curvature is 0.1 mm.
Formed on the curved surface. Of these score lines 7 and 8, the height of the position where one score line 7 reaches the peripheral edge of the bottom surface 2 is the other score line 8.
Is 0.57 mm higher than the height at which the bottom reaches the periphery of the bottom surface 2.
Configured to be higher. In the vicinity of the position where one of the score lines 7 reaches the peripheral edge of the bottom surface 2, a flat surface portion 9 straddling the score line 7 is formed. The maximum width of the flat portion 9 was set to 1 mm. The inclination of one secant line 7 is preferably 8 ° or more from the side surface 4 of the tablet 1 toward the center, but in Example 2 it was 12 °. The inclination of the secant line 8 on the other side is preferably 4 ° or more from the side surface 4 of the tablet 1 toward the center, but in this Example 2, it was 5 °. As described above,
The bottom surface 2 was formed so as to gradually lower from the side surface 4 of the tablet 1 toward the center. When the tablet 1 according to Example 2 was actually manufactured under the above conditions and the performance was examined, the tablet 1 could be easily divided into two. Also,
By further pressing the obtained half-piece with a finger, the tablet 1 could finally be easily divided into four.

[0022]

According to the first aspect of the present invention, since the two score lines are provided only on the bottom surface of one side, after pressing the tablet with a finger to divide the tablet into two parts, the half of the tablet is not turned over and further Pressing with a finger allows the tablet to be divided into four parts. Therefore, a tablet that can be easily divided into two or four parts is provided. Further, for example, when punching a tablet, it is sufficient to provide a score line only on one bottom surface of the tablet, and therefore, the manufacturing is easy.

According to the second aspect, it becomes possible to prevent the tablet from being chipped at the peripheral corner portion of the bottom surface, which is the most easily damaged portion.

According to the third aspect, when the tablet is divided into two, stress concentration occurs only on one secant line and stress concentration does not occur on the other secant line. Therefore, the tablet should be always along one secant line. It becomes possible to divide into two. Therefore, there is almost no risk of accidentally dividing the tablet into four parts by one pressing operation.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a tablet according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a tablet.

FIG. 3 is an enlarged side view of a tablet.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a front view showing a state where a tablet is divided into two.

FIG. 6 is a side view of the tablet in a direction different from that of FIG. 5 by 90 °.

FIG. 7 is a perspective view showing a state in which a tablet is divided into four parts.

FIG. 8 is a perspective view of a small piece obtained by dividing a tablet into four parts.

FIG. 9 is an enlarged plan view of the tablet according to the second embodiment.

FIG. 10 is an enlarged side view of the tablet according to the second embodiment.

11 is a cross-sectional view taken along the line BB in FIG.

[Explanation of symbols]

 1 tablet 2, 3 bottom surface 4 side surface 5, 6 slope surface 7, 8 secant line 9 flat surface part a1, a2, a3, a4 area surface θ1 to θ4 angle of folding between area surfaces h1 at a position where one secant line reaches the peripheral edge of the bottom surface Height h2 Height of the position where the other secant reaches the peripheral edge of the bottom surface

Claims (3)

[Claims] 1. A tablet having a pair of bottom faces and side faces surrounding the periphery of the bottom faces, wherein the tablet is divided into four area faces by two secant lines where one bottom face intersects. A tablet characterized in that the center of one of the bottom faces is made low and the peripheral edge is made high by setting the angle of fold of each of the area faces adjacent to each other at the boundary as less than 180 °. 2. The tablet according to claim 1, wherein an inclined surface is formed at a corner portion of the peripheral edge of the bottom surface. 3. The height of the position where one of the two score lines reaches the peripheral edge of the bottom surface is made higher than the height of the position where the other score line reaches the peripheral edge of the bottom surface, and The tablet according to claim 1 or 2, wherein a flat surface portion that extends over the one dividing line is formed in the vicinity of the position where the dividing line reaches the peripheral edge of the bottom surface.