JP3880093B2 - tablet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tablet in which a dividing line for facilitating division is provided on the bottom surface.
[0002]
[Prior art]
Pharmaceutical tablets are sometimes required to be divided into two or more pieces accurately and easily according to the patient's consumption. For this reason, it is common practice to provide a dividing line for division on the bottom of the tablet. Conventionally, for example, Japanese Utility Model Publication No. 40-3680 and Japanese Utility Model Application Laid-Open No. 5-37924 are known as tablets with such a dividing line.
[0003]
In Japanese Utility Model Publication No. 40-3680, one bottom line and one bottom line of a cylindrical tablet are provided one by one, and each bottom surface is formed by a pair of inclined surfaces with the dividing line as a trough. A formed tablet is disclosed. The tablet disclosed in Japanese Utility Model Publication No. 40-3680 can be divided by simply placing the tablet on a hard table such as a desk and pressing the center of the tablet with a finger from above. Japanese Utility Model Laid-Open No. 5-37924 discloses a tablet in which cross-sections perpendicular 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 equal parts by cutting along a cross-shaped score line.
[0004]
[Problems to be solved by the invention]
However, in the tablet disclosed in Japanese Utility Model Publication No. 40-3680, the dividing line is provided separately on one bottom surface and the other bottom surface of the tablet, so that the tablet is divided into two equal parts. It was necessary to turn the half piece over and then press it. However, since the half of a small tablet originally divided into two is even smaller, the work of turning it over is considerably complicated. For this reason, the tablet disclosed in Japanese Utility Model Publication No. 40-3680 was not easily divided into four equal parts. In addition, this tablet is difficult to manufacture because the secant on one bottom surface and the secant on the other bottom surface must be accurately orthogonal.
[0005]
The tablet disclosed in Japanese Utility Model Publication No. 5-37924 cannot be divided by pressing the tablet from above because the bottom surface itself is formed into a flat surface. Therefore, in order to divide the tablet, it is usually necessary to hold the tablet with the fingertips of both hands and break the tablet along the dividing line with force. Alternatively, special tools such as knives and cutters have been required to divide the tablets disclosed in Japanese Utility Model Publication No. 5-37924 along the score line.
[0006]
And, the tablets disclosed in Japanese Utility Model Publication No. 40-3680 and the tablets disclosed in Japanese Utility Model Laid-Open No. 5-37924 may be divided into four by a single operation, depending on the force. It is not always easy to bisect correctly, and it has been a problem especially when used by sick and elderly people.
[0007]
A first object of the present invention is to provide a tablet that is easy to manufacture and can be easily divided. The second object of the present invention is to provide a tablet that can be divided into two parts by a single operation, and that the half of the divided tablet can be easily divided into four parts.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, according to the present invention, a tablet having a pair of bottom surfaces and side surfaces surrounding the periphery of the bottom surfaces, the four bottom surfaces intersect each other by two dividing lines intersecting one bottom surface. In each of the divided tablets, by making the angle between the area surfaces adjacent to each other at the dividing line less than 180 °, the center of the one bottom surface is lowered and the peripheral edge is raised, and the two A tablet is provided wherein the height of the position where one of the secant lines reaches the peripheral edge of the bottom surface is higher than the height of the position where the other score line reaches the peripheral edge of the bottom surface .
[0009]
Note that, in a tablet having a pair of bottom surfaces and side surfaces surrounding the peripheral edges of the bottom surfaces, and divided into four region surfaces by two dividing lines where one bottom surface intersects, with the dividing line as a boundary By making the angle between the adjacent surface areas adjacent to each other less than 180 °, the center of the one bottom surface is lowered and the peripheral edge is raised, and one of the two dividing lines is the side surface of the tablet. There is provided a tablet characterized in that the angle that decreases from the center toward the center is greater than the angle at which the other secant line decreases from the side of the tablet toward the center.
In this case, it is preferable that the inclination of the one dividing line is 8 ° or more from the side surface of the tablet toward the center, and the inclination of the other dividing line is 4 ° or more from the side surface of the tablet toward the center.
[0010]
In the vicinity of the position where the one dividing line reaches the peripheral edge of the bottom surface, a flat surface portion is formed across the one dividing line .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described 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. 4 is a cross-sectional view taken along the line AA in FIG.
[0012]
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. 1 to 4, the tablet 1 is enlarged, but actually, the diameter of the tablet 1 is usually about several mm to several tens of mm, and the height of the tablet 1 is several Usually, it is about mm. The illustrated tablet 1 has a substantially cylindrical shape, but may have a prismatic shape, an elliptical column shape, or the like. Slopes 5 and 6 for preventing the tablet 1 from being chipped are formed at the corners of the periphery of the upper and lower bottom surfaces 2 and 3.
[0013]
One bottom surface 2 (upper bottom surface 2 in FIGS. 1 to 4) is provided with two dividing lines 7 and 8 formed of V-shaped grooves or U-shaped grooves. The dividing lines 7 and 8 are orthogonal to each other at the center of the bottom surface 2, and the bottom surface 2 is divided into four region surfaces a 1, a 2, a 3 and a 4 by the dividing lines 7 and 8. These area surfaces a1, a2, a3, and a4 are all inclined so as to gradually increase from the center of the bottom surface 2 toward the peripheral edge, and the angle between the area surface a1 and the area surface a2 with the dividing line 8 as a boundary. The angle θ2 between the area plane a2 and the area plane a3 with θ1, the dividing line 7 as the boundary, the angle θ3 between the area plane a3 and the area plane a4 with respect to the dividing line 8, and the area plane a4 with the dividing line 7 as the boundary And the angle θ4 between the area planes a1 is less than 180 °. Thereby, the bottom surface 2 is formed so that the center is low overall and the peripheral edge is high. In the illustrated example, the area surfaces a1, a2, a3, and a4 are all flat surfaces, but may be curved surfaces.
[0014]
Unlike the bottom surface 2, the other bottom surface 3 (the bottom surface 3 in FIGS. 1 to 4) is substantially formed as a flat surface or an appropriate curved surface, and is not provided with a secant. However, various information such as the weight, company name, type, and the like of the tablet 1 may be written or stamped on the bottom surface 3.
[0015]
As understood from FIGS. 3 and 4, in this embodiment, the bottom surface 2 of the tablet 1 has a height h <b> 1 where the dividing line 7 reaches the periphery of the bottom surface 2, and the dividing line 8 reaches the periphery of the bottom surface 2. It is configured to be higher than the position height h2. Further, in the vicinity of the position where the dividing line 7 reaches the peripheral edge of the bottom surface 2, a plane portion 9 is formed that is located across the dividing line 7.
[0016]
Next, the use state of the tablet 1 according to this embodiment will be described. First, when the tablet 1 is divided into two, the tablet 1 is placed on a hard table 10 such as a desk with one bottom surface 2 of the tablet 1 facing downward. As described above, the bottom surface 2 of the tablet 1 is such that the height h1 at the position where the dividing line 7 reaches the periphery of the bottom surface 2 is higher than the height h2 at the position where the dividing line 8 reaches the periphery of the bottom surface 2. Therefore, when the tablet 1 is placed on the table 10 with the bottom surface 2 facing down, only the flat surface portion 9 located across the secant 7 is in contact with the upper surface of the table 10. It will be in the state. And in this state, as shown in FIG. 5, the center of the other bottom face 3 of the tablet 1 is pressed with the finger | toe 11 from the top. Then, since the angle θ1 between the area plane a1 and the area plane a2 and the angle θ3 between the area plane a3 and the area plane a4 are both less than 180 °, the groove of the secant 8 provided on the bottom surface 2 Stress concentration is generated at the bottom of the ridge so as to push and expand the groove. Thereby, the tablet 1 is divided | segmented smoothly along the secant 8, and it becomes possible to obtain the two half pieces 1 'of the tablet 1 easily.
[0017]
On the other hand, FIG. 6 is a side view of the tablet 1 in a direction different from FIG. 5 by 90 °. As shown in FIG. 6, when the tablet 1 is divided into two, even if the other bottom surface 3 of the tablet 1 is pressed from above, the plane portion 9 located across the dividing line 7 is Since it abuts, 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 secant line 8, and there is almost no fear that the tablet is divided into four by one pressing operation.
[0018]
Next, when the tablet 1 is divided into four parts, the half 1 'obtained by dividing the tablet 1 into two parts as described above is further pressed from above with the finger 11 as shown in FIG. Then, the angle θ4 between the area plane a1 and the area plane a4 (or the angle θ2 between the area plane a2 and the area plane a3) is less than 180 °, so that the secant 7 provided on the bottom surface 2 A stress concentration is generated at the bottom of the groove so as to push and expand the groove. Thereby, the half piece 1 'of the tablet 1 can be smoothly divided along the dividing line 7, and a small piece 1 "obtained by dividing the tablet 1 into four parts as shown in FIG. 8 can be easily obtained.
[0019]
【Example】
Next, the tablet concerning this invention was actually manufactured and the performance was investigated. The results of the examples will be described below.
[0020]
Example 1
The diameter of the tablet was 9 mm, and slopes inclined by 32 ° with respect to the bottom surface were formed in the peripheral corners of the upper and lower bottom surfaces within a range of 0.36 mm in height. One bottom surface was formed such that the center was low overall and the peripheral edge was high. In addition, two bottom lines perpendicular to the center were provided in a cross shape on the bottom surface. Each of the two secant lines is a V-shaped groove having a width of 0.2 mm and a base angle of 60 °. The height of the position where one of the two dividing lines reaches the peripheral edge of the bottom surface is configured to be 0.42 mm higher than the height of the position where the other dividing line reaches the peripheral edge of the bottom surface. Moreover, the plane part straddling a secant was formed in the vicinity of the position where one secant reaches the periphery of the bottom face. The range of the flat part was set to 1 mm at the maximum from the side surface. In addition, the slope of the secant was gradually lowered from the side of the tablet toward the center at an angle of 8 ° on one secant and 4 ° on the other secant. When the tablet concerning Example 1 was actually manufactured on the above conditions and the performance was investigated, the tablet was easily divided into two. Moreover, the tablet could be easily divided into four by further pressing the obtained half piece with a finger.
[0021]
(Example 2)
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. 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, the peripheral corners of the upper and lower bottom surfaces 2 and 3 are within a range of 0.36 mm in nominal depth and 0.32 mm in punch depth. Slopes 5 inclined by 32 ° with respect to the bottom surface were formed. One bottom surface 2 was formed so that the center was low overall and the peripheral edge was high. In addition, two bottom lines 7 and 8 which are orthogonal to each other at the center are provided on the bottom surface 2 in a cross shape. These dividing lines 7 and 8 are substantially V-shaped grooves each having a width of 0.48 mm and a base angle of 60 °. However, the deepest portion of the substantially V-shaped groove was not formed at an acute angle, but was formed into a curved surface having a curvature radius of 0.1 mm. Among these dividing lines 7, 8, the height of the position where one of the dividing lines 7 reaches the periphery of the bottom surface 2 is configured to be 0.57 mm higher than the height of the position where the other dividing line 8 reaches the periphery of the bottom surface 2. . In the vicinity of the position where one of the dividing lines 7 reaches the peripheral edge of the bottom surface 2, a plane portion 9 is formed across the dividing line 7. The range of the flat portion 9 was set such that the maximum width was 1 mm. On the other hand, the slope of one of the secant lines 7 is preferably 8 ° or more from the side surface 4 of the tablet 1 toward the center, but in this Example 2, it was set to 12 °. The inclination of the other secant 8 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 become lower from the side surface 4 of the tablet 1 toward the center as a whole. When the tablet 1 according to Example 2 was actually produced under the above conditions and the performance was examined, the tablet 1 could be easily divided into two. Moreover, the tablet 1 was finally able to be divided into four easily by further pressing the obtained half piece with a finger.
[0022]
【The invention's effect】
Since the two secant lines are provided only on one bottom surface, press the tablet with your finger to divide it into two parts, and then press the part with your finger as it is, without turning the tablet half upside down. Is possible. Accordingly, a tablet that can be easily divided into two or four is provided. In addition, for example, when punching a tablet, it is sufficient to provide a secant on only one bottom surface of the tablet, so that the production is easy.
[0023]
It is possible to prevent the tablet from being chipped at the peripheral corner of the bottom surface, which is the most easily damaged part.
[0024]
When the tablet is divided into two, stress concentration occurs only on one dividing line and stress concentration does not occur on the other dividing line. Therefore, it is possible to divide the tablet into two along one dividing line. Therefore, there is almost no worry that the tablet is erroneously divided into four by a single 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. 2;
FIG. 5 is a front view showing a state where the tablet is divided into two parts.
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.
9 is an enlarged plan view of a tablet according to Example 2. FIG.
FIG. 10 is an enlarged side view of a tablet according to Example 2.
11 is a cross-sectional view taken along line BB in FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tablet 2, 3 Bottom surface 4 Side surface 5, 6 Slope 7, 8 Split line 9 Plane | planar part a1, a2, a3, a4 Area surface (theta) 1- (theta) 4 The angle h1 which area surfaces fold with each other The position where one dividing line reaches the periphery of a bottom face Height h2 Height at which the other secant line reaches the bottom edge

Claims (1)

In a tablet having a pair of bottom surfaces and side surfaces surrounding the periphery of the bottom surfaces, and divided into four region surfaces by two dividing lines where one bottom surface intersects,
By lowering the angle between the adjacent surface areas adjacent to each other with the dividing line being less than 180 °, the center of the one bottom surface is lowered and the peripheral edge is raised,
The height of the position where one of the two dividing lines reaches the periphery of the bottom surface is made higher than the height of the position where the other dividing line reaches the periphery of the bottom surface ,
A tablet comprising a planar portion located across the one dividing line in the vicinity of the position where the one dividing line reaches the peripheral edge of the bottom surface.

Images