Container provided with cap

Abstract

To provide a container provided with a cap that is capable of further easily removing the cap from a container body.SOLUTION: A container provided with a cap comprises a container body 10 and a cap. The container body 10 comprises a shoulder part 16 having a shape whose diameter is gradually reduced toward a neck part 12 side from a trunk part 11 side. The shoulder part 16 comprises a first tilting part 13 whose external wall face tilts at an angle θ1 with respect to a cylinder axis Ax10, and a second tilting part 15 whose external wall face tilts at an angle θ2 with respect to the cylinder axis Ax10. The angle θ2 is set to be larger than the angle θ1. An internal wall face of the shoulder part 16 tilts so as to be along the external wall face of the first tilting part 13. Thus, a stored object hardly remains at an inner side portion of the shoulder part 16. Accordingly, the container provided with the cap makes it possible to use up the object, thereby being environmentally excellent. Further, it is possible to detach the cap with a small force, and thus it is easy to be used for elderly and younger persons with weak grip strength, thereby being excellent.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a container with a cap, and particularly to a container with a twist cap type cap.

Background Art

[0002] As a container with a cap for containing eye drops or the like, a twist cap type may be adopted. A container with a twist cap type cap has an advantage that the attachment and detachment of the cap are easier than those of a container with a screw type cap.

[0003] The container with a cap disclosed in Patent Document 1 is configured by a combination of a cap provided with a locking arm on the inner peripheral surface and a container body provided with a locking projection. In a state where the cap is attached to the container body, the locking arm of the cap engages with the locking projection of the container body, and the cap is locked to the container body. The engagement state between the container body and the cap can be released by twisting the cap with respect to the container body. That is, by twisting the cap with respect to the container body, the lower end portion of the cap rides on the shoulder portion of the container body, and the engagement between the locking arm and the locking projection is released.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, for a container with a cap, it is required to make it easier to remove the cap from the container body.

[0006] The present invention has been made in view of the above-described demands, and an object thereof is to provide a container with a cap that can more easily remove the cap from the container body.

Means for Solving the Problems

[0007] A container with a cap according to one aspect of the present invention includes a container body capable of storing an object, and a cap detachably locked to the container body. The container body has a cylindrical body portion having a bottom wall and a peripheral wall rising from an outer peripheral edge of the bottom wall, and is connected to the other end of the body portion of the peripheral wall of the body portion on the side opposite to the bottom wall, and has a shape in which the diameter gradually decreases as it moves away from the body portion. A shoulder portion, one end of which is connected to an end of the shoulder portion on the side opposite to the other end of the body portion, and an object can be led out from an end on the side opposite to the connection portion with the shoulder portion. A mouth portion, and a locking portion provided on a part of the outer periphery and locking with the cap. A neck portion having the above. The cap has a cylindrical cap body having a ceiling wall and a peripheral wall hanging down from an outer peripheral edge of the ceiling wall, and is formed so as to extend along the peripheral wall of the cap body from the inner surface of the ceiling wall of the cap body, and is locked to the locking portion of the neck portion. A locking arm portion having a locked portion to be locked.

[0008] In the container with a cap according to this aspect, the container body is integrally formed such that the body portion, the shoulder portion, and the neck portion have a common cylindrical axis. And the shoulder portion of the container body is connected to the one end of the neck portion, and has a first inclined portion having an outer wall surface inclined at a predetermined first angle with respect to the cylindrical axis, and is connected to the other end of the body portion of the body portion, and has an outer wall surface inclined at a second angle larger than the first angle with respect to the cylindrical axis, and the end on the neck portion side is connected to the outer wall surface of the first inclined portion. A second inclined portion. The outer wall surface of the second inclined portion is formed so as to be a starting point when the locking state between the locking portion and the locked portion is released when the cap is twisted around the cylindrical axis with respect to the container body.

[0009] In the capped container according to the above aspect, the shoulder portion of the container body is formed to have a second inclined portion. The second inclined portion is connected to the other end of the body portion in the body portion, and the outer wall surface is formed to incline at a second angle greater than the first angle which is the inclination angle of the outer wall surface of the first inclined portion. For this reason, when trying to remove the cap attached to the capped container according to the above aspect from the container body by twisting the cap around the cylinder axis, the outer wall surface of the second inclined portion serves as the starting point (trigger) for releasing the locked state.

[0010] In the capped container according to the above aspect, compared with the case where the shoulder portion is formed only by an inclined portion whose outer wall surface inclines at a single angle as in the capped container according to the prior art, by forming the shoulder portion with a two-stage inclination in which the inclination angle of the outer wall surface becomes smaller from the body portion side toward the neck portion side, the cap can be easily removed from the container body with a small force (torque). The capped container according to the above aspect that can remove the cap with such a small force is particularly beneficial for those who have difficulty exerting strength in their hands, such as the elderly and the young, from the perspective of diversity.

[0011] In addition, in the above aspect, the bottom wall of the container body is not limited to a flat plate shape. For example, a bottom wall having a curved surface on the outer surface and the inner surface may be used. And in this case, there may not be a clear boundary between the bottom wall and the peripheral wall.

[0012] Also, the ceiling wall of the cap is not similarly limited to a flat plate shape. Also in this case, there may not be a clear boundary between the ceiling wall and the peripheral wall.

[0013] In the capped container according to the above aspect, the first angle may be set within a range of 15% to 85% with respect to the second angle.

[0014] In the capped container according to the above aspect, since the first angle is set within the range of 15% to 85% with respect to the second angle, when removing the cap, the cap opening edge can be smoothly transferred from the outer wall surface of the second inclined portion to the outer wall surface of the first inclined portion. Therefore, in the capped container according to the above aspect, the operating feeling felt by the user when removing the cap from the container body can be made smooth. Specifically, when the user tries to remove the cap, by simply twisting the cap slightly with a small force around the cylinder axis, the cap opening edge slides up the first inclined portion. For this reason, the user can feel that the cap is automatically removed from the container body and can experience a smooth operating feeling.

[0015] In the capped container according to the above aspect, the first angle may be set within the range of 15° to 55°.

[0016] In the capped container according to the above aspect, since the inclination angle (first angle) of the outer wall surface in the first inclined portion is set within the range of 15° to 55°, the cap opening edge transferred from the outer wall surface of the second inclined portion can be smoothly moved to the side opposite to the body portion.

[0017] Also, in the capped container according to the above aspect, since the first angle is set within the range of 15° to 55°, it is advantageous for accurately aligning the cylinder axis of the cap with respect to the cylinder axis of the container body when attaching the cap to the container body. That is, by making the inclination angle (first angle) of the outer wall surface in the first inclined portion a gentle angle within the range of 15° to 55° rather than the shoulder of the capped container according to the prior art, the cap can be guided (guided in a direction intersecting with respect to the cylinder axis of the container body) so that the cylinder axis of the cap aligns with the cylinder axis of the container body.

[0018] In the capped container according to the above aspect, the inner wall surface of the shoulder portion may be formed along the outer wall surface of the first inclined portion.

[0019] In the capped container according to the above aspect, since the inner wall surface of the shoulder portion follows the outer wall surface of the first inclined portion and the first angle is set to 55° or less, the inner wall surface of the shoulder portion is also formed with an inclination angle of 55° or less. Therefore, when the object stored is led out from the mouth portion of the neck portion through the nozzle portion, it is difficult to remain on the inner wall surface of the shoulder portion. Therefore, in the capped container according to the above aspect, the object can be led out and partitioned, and it is excellent in terms of the environment.

[0020] In the capped container according to the above aspect, in the direction along the cylinder axis, the height dimension of the second inclined portion may be set within the range of 0.5 mm to 2 mm.

[0021] In the capped container according to the above aspect, since the height dimension of the second inclined portion is set within the range of 0.5 mm to 2 mm, when the cap is twisted around the cylinder axis in an attempt to remove the attached cap from the container body, the outer wall surface of the second inclined portion becomes the starting point (trigger) for releasing the locked state.

[0022] In the capped container according to the above aspect, in the direction along the cylinder axis, the height dimension of the second inclined portion may be set within the range of 5% to 50% with respect to the height dimension of the shoulder portion.

[0023] In the capped container according to the above aspect, since the height dimension of the second inclined portion is set within the range of 5% to 50% with respect to the height dimension of the shoulder portion, the second inclined portion is provided as a trigger for moving the cap in a direction away from the body portion, and the cap opening edge can be immediately guided to the outer wall surface of the first inclined portion. Therefore, in the capped container according to the above aspect, it is possible to remove the cap from the container body more simply (with a small torsional torque) than in the past.

[0024] In the capped container according to the above aspect, the body may have an annular wall between the peripheral wall of the body and the other end of the body, the annular wall intersecting with the direction along the cylindrical axis, the annular wall facing the cap opening edge of the cap when the cap is attached. In the capped container according to the above aspect, when the shoulder is viewed from the neck side in the direction along the cylindrical axis, the first inclined portion may have an elliptical shape or a rounded diamond shape, and a part of the end portion on the body side may be arranged with a gap between it and the annular wall, and the second inclined portion may be formed to close the gap between the part of the end portion of the first inclined portion and the annular wall.

[0025] In the capped container of the above embodiment, a second inclined portion is provided around a portion of the periphery of the first inclined portion (a portion of the periphery of the first inclined portion when viewed from above), so that the cap can be easily removed with a minimal configuration compared to when the second inclined portion is provided around the entire periphery of the first inclined portion.

[0026] In the capped container according to the above aspect, the height dimension of the shoulder portion in the direction along the cylindrical axis may be set within a range of 7% to 38% of the height dimension of the body portion.

[0027] In the capped container according to the above embodiment, the height of the shoulder is within a range of 7% to 38% of the height of the body, making the ratio of the height of the shoulder to the height of the body relatively large. Therefore, in the capped container according to the above embodiment, when a user removes the cap and attempts to dispense the contained object from the mouth of the neck through the nozzle, the user can visually confirm the area to be dispensed while preventing the area from being blocked by the body.

[0028] When using the capped container according to the above aspect as a container for accommodating eye drops, when a user attempts to instill the eye drops, it is difficult for the body portion to enter the field of view, making it easy to instill the eye drops. Further, in the capped container according to the above aspect, since the ratio of the height dimension of the shoulder portion to the height dimension of the body portion is within the above range, the distance between the eye and the body portion during eye instillation can be made relatively large. For this reason, it becomes easier to focus on the location where the user attempts to dispense the eye drops, and it becomes easier to easily instill the eye drops onto the eye.

Advantages of the Invention

[0029] In the capped container according to the above aspect, it is possible to remove the cap from the container body more simply.

Brief Description of the Drawings

[0030]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are illustrative of the present invention, and the present invention is not limited to the following embodiments except for its essential configuration.

[0032] 1. Overall Configuration of the Capped Container 1 The overall configuration of the capped container 1 according to an embodiment of the present invention will be described with reference to FIG. 1.

[0033] As shown in FIG. 1, the capped container 1 includes a container body 10 and a cap 20. The capped container 1 is a capped container of the twist cap type. In the capped container 1 according to the present embodiment, eye drops, which are an example of the object, are accommodated inside.

[0034] The container body 10 has a body portion 11, a neck portion 12, and a shoulder portion 16 integrally formed using a resin material (for example, polypropylene, polyethylene, polyethylene terephthalate, etc.). The container body 10 also has a nozzle portion 17 attached to the upper part of the neck portion 12 in the Z direction. The nozzle portion 17 is formed of a material different from that of the body portion 11, the neck portion 12, and the shoulder portion 16.

[0035] The body portion 11 is integrally formed of a bottom wall 11c and a peripheral wall 11b rising upward in the Z direction from the outer peripheral edge of the bottom wall 11c. The body portion 11 has an inner space for accommodating eye drops. The shoulder portion 16 has a shape in which the lower end portion in the Z direction is connected to the upper end portion in the Z direction (the other end portion of the body portion) of the peripheral wall 11b of the body portion 11 and the diameter gradually decreases from the body portion 11 toward the neck portion 12.

[0036] The shoulder portion 16 has a first inclined portion 13, a convex portion 14, and a second inclined portion 15. The first inclined portion 13, the convex portion 14, and the second inclined portion 15 of the shoulder portion 16 will be described later. The body portion 11 has an annular wall portion (outer edge portion) 11a intersecting (substantially orthogonal) in the Z direction between the upper end portion in the Z direction of the peripheral wall 11b and the portion where the lower end portion in the Z direction of the shoulder portion 16 is connected.

[0037] The head portion 12 has a cylindrical shape and is connected to the other end (the end on the upper side in the Z direction) at the shoulder portion 16. As described above, the nozzle portion 17 is attached to the upper mouth portion in the Z direction of the head portion 12. By the nozzle portion 17 attached to the head portion 12, even when the container body 10 is laid on its side, the eye drops contained therein are not discharged unless the user applies a pressing force to the peripheral wall 11b of the body portion 11.

[0038] Further, the head portion 12 has a locking convex portion (locking portion) 12a that protrudes radially outward in the middle portion in the Z direction. The locking convex portion 12a is a portion that engages with the locking concave portion of the cap 20 described later and has a ring shape.

[0039] The body portion 11 has a vertically long shape in which the width dimension W1 in the X direction is smaller than the height dimension L1 in the Z direction. Also, in FIG. 1, although not shown, the depth dimension of the body portion 11 in the direction orthogonal to the paper surface of FIG. 1 is even smaller than the width dimension W1, and the body portion 11 has a flat shape.

[0040] The height dimension L2 obtained by adding the shoulder portion 16 and the head portion 12 in the Z direction is set lower than the height dimension L1 of the body portion 11. Also, the height dimension L3 of the shoulder portion 16 in the Z direction is set within a range of 7% to 38% with respect to the height dimension L1 of the body portion 11. In the present embodiment, as an example, (L3 / L1) = 22% is set.

[0041] 2. Configuration of the cap 20 and mounting form of the cap 20 on the container body 10 The configuration of the cap 20 and the mounting form of the cap 20 on the container body 10 will be described with reference to FIGS. 2 and 3.

[0042] As shown in FIGS. 2 and 3, the cap 20 has a cap body 21, a locking arm portion 22, and a plug convex portion 23, which are integrally formed using a resin material (for example, polypropylene, polyethylene, polyethylene terephthalate, etc.). Also, as shown in FIG. 3, the cap 20 also has ribs 24 and 25 that are integrally formed with the cap body 21 and the like.

[0043] The cap body 21 is integrally formed with a plate-like ceiling wall 21b and a peripheral wall 21a provided so as to hang downward in the Z direction from the outer peripheral edge of the ceiling wall 21b. Two locking arm portions 22 are provided so as to face each other in the X direction (along the peripheral wall 21a). Each locking arm portion 22 is formed so as to extend along the Z direction from the inner surface 21d of the ceiling wall toward the inner space 21c of the cap body 21. Each locking arm portion 22 has a locking concave portion (locked portion) 22a that engages with a locking convex portion 12a provided on the neck portion 12 of the container body 10. By the engagement between the locking convex portion 12a of the neck portion 12 and the locking concave portion 22a of the locking arm portion 22, the cap 20 attached to the container body 10 cannot be removed until a twisting operation is performed by the user.

[0044] The plug convex portion 23 is formed with a circular outer edge in a bottom view from the Z direction as shown in FIG. 3. The plug convex portion 23 is arranged in the region between the two locking arm portions 22. The plug convex portion 23 is formed so as to extend along the Z direction from the inner surface 21d of the ceiling wall toward the inner space 21c of the cap body 21. The height of the plug convex portion 23 in the Z direction is lower than that of the locking arm portion 22. As shown in FIG. 2, a part of the plug convex portion 23 is inserted into the nozzle portion 17 in a state where the cap 20 is attached to the container body 10. Thereby, the nozzle portion 17 is closed.

[0045] As shown in FIG. 2, in a state where the cap 20 is attached to the container body 10, the lower end portion (cap opening edge) 21e of the cap body 21 abuts on or is close to the outer edge portion 11a of the body portion 11.

[0046] As shown in FIG. 3, the ribs 24 and 25 are connected to each of the two locking arm portions 22 and are also connected to the inner surface 21d of the ceiling wall. The rib 24 is formed so as to extend outward in the X direction from each locking arm portion 22. The rib 25 is formed so as to extend outward in both Y directions from each locking arm portion 22.

[0047] 3. Detailed Configuration of the Shoulder Portion 16 in the Container Body 10 The detailed configuration of the shoulder portion 16 in the container body 10 will be described with reference to FIGS. 4 and 5.

[0048] As shown in FIG. 4, in the first inclined portion 13 of the shoulder portion 16, the upper end portion in the Z direction is connected to the neck portion 12, and the lower end portion in the Z direction is connected to the body portion 11. The first inclined portion 13 has a shape in which the diameter gradually decreases from the body portion 11 side in the Z direction lower side toward the neck portion 12 side in the Z direction upper side. When the cylindrical axis of the container body 10 is represented by Ax10, the outer wall surface of the first inclined portion 13 forms an angle θ1 with respect to the cylindrical axis Ax10. The angle θ1 corresponds to the "first angle".

[0049] As shown in FIG. 5, when the first inclined portion 13 is viewed from above in the Z direction, the first inclined portion 13 has an oval shape or a rounded rhombus shape. And a part of the lower end portion of the first inclined portion 13 on the body portion 11 side is arranged at a position separated from the outer edge portion 11a in the body portion 11.

[0050] Subsequently, as shown in FIG. 5, in the present embodiment, four second inclined portions 15 are provided. That is, each second inclined portion 15 is provided at a position where the lower end portion of the first inclined portion and the outer edge portion 11a of the body portion 11 are separated, and is formed so as to close the space between a part of the lower end portion of the first inclined portion 13 and the outer edge portion 11a of the body portion 11.

[0051] As shown in FIG. 4, the second inclined portion 15 is provided only in a portion close to the body portion 11 in the Z direction lower side. Specifically, the height dimension L4 of the second inclined portion 15 in the Z direction is set within a range of 5% to 50% with respect to the height dimension L3 of the shoulder portion 16. In the present embodiment, as an example, (L4 / L3) = 16% is set.

[0052] In addition, the height dimension L4 of the second inclined portion 15 is set within a range of 0.5 mm to 2 mm.

[0053] The outer wall surface of the second inclined portion 15 forms an angle θ2 with respect to the cylinder axis Ax10. The angle θ2 corresponds to the "second angle". The angle θ1 is set within a range of 15% to 85% with respect to the angle θ2. In this embodiment, as an example, the angle θ1 is 30°, the angle θ2 is 70°, and (θ1 / θ2) = 43% is set. As shown in part A of FIG. 4, the lower end portion of the second inclined portion 15 is provided with a corner R having a minute (for example, 0.5 mm) curvature radius.

[0054] Also, in this embodiment, as an example, the angle θ1 is set to 30° as described above. However, the angle θ1 can be set within a range greater than 0° and less than or equal to 55° (more specifically, within a range of 15° or more and 55° or less). Also, although the angle θ2 is set to 70° as an example, it can be set within a range of 55° to 80°.

[0055] The shoulder portion 16 also has a convex portion 14 having a convex arc shape between the second inclined portions 15. The convex portion 14 is also formed such that its height in the Z direction is substantially equal to that of the second inclined portion 15.

[0056] 4. Shape of the inner wall surface 16b of the shoulder portion 16 The shape of the inner wall surface 16b of the shoulder portion 16 will be described with reference to FIG. 6. FIG. 6(a) is a cross-sectional view showing the shape of the inner wall surface 16b of the shoulder portion 16 in the container body 10 of this embodiment, and FIG. 6(b) is a cross-sectional view showing the shape of the inner wall surface 96b of the shoulder portion 96 in the container body 90 of the comparative example.

[0057] As shown in FIG. 6(a), in the container body 10 of this embodiment, the inner wall surface 16b of the shoulder portion 16 has an inclination along the outer wall surface of the first inclined portion 13 and is composed of an inclined surface that forms an angle θ3 with respect to the cylinder axis Ax10. In this embodiment, the relationship θ3≒θ1 is satisfied.

[0058] As shown in FIG. 6(b), also in the container body 90 of the comparative example, the inner wall surface 96b of the shoulder portion 96 has an inclination along the inclined outer wall surface 93 and is composed of an inclined surface that forms an angle θ93 with respect to the cylinder axis Ax90.

[0059] As shown in FIGS. 6(a) and 6(b), the angle θ3 formed by the inner wall surface 16b of the shoulder portion 16 in the present embodiment with the cylinder axis Ax10 is smaller than the angle θ93 formed by the inner wall surface 96b of the shoulder portion 96 in the comparative example with the cylinder axis Ax90. Therefore, in the container body 10 of the present embodiment, when attempting to lead out the eye drops (object) accommodated in the inner space 13a to the outside, it is difficult to remain on the inner wall surface 16b of the shoulder portion 16. On the other hand, in the container body 90 of the comparative example, since the angle θ93 formed by the inner wall surface 96b with respect to the cylinder axis Ax90 is larger than that of the present embodiment, when attempting to lead out the eye drops to the outside, it is likely to remain on the inner wall surface of the shoulder portion 96. That is, in the present embodiment, by making the inclination of the inner wall surface 16b of the shoulder portion 16 steeper than that of the comparative example, the eye drops flowing along the inner wall surface 16b can be smoothly sent to the neck portion 12.

[0060] 5. Effects In the capped container 1 according to the present embodiment, the shoulder portion 16 of the container body 10 is formed to have the second inclined portion 15. The second inclined portion 15 is connected to the opening edge on the upper side in the Z direction in the body portion 11, and is formed such that the outer wall surface inclines at an inclination angle θ2 that is larger than the inclination angle θ1 of the outer wall surface of the first inclined portion 13. For this reason, when attempting to remove the cap 20 attached to the capped container 1 from the container body 10 by twisting the cap 20 around the cylinder axis Ax10, the lower end portion 21e of the cap body 21 slides on the outer wall surface of the second inclined portion 15, and thus the cap 20 is slightly lifted in the direction of separating from the body portion 11 (toward the upper side in the Z direction). Then, the lower end portion 21e of the cap body 21 is further lifted in the direction of separating from the body portion 11 (toward the upper side in the Z direction) along the outer wall surface of the first inclined portion 13. In the capped container 1, as described above, the engagement between the locking convex portion 12a of the neck portion 12 and the locking concave portion 22a of the locking arm portion 22 in the cap 20 is released, and the cap 20 is detached from the container body 10.

[0061] In addition, in the capped container 1, compared with the case where the shoulder is formed only by an inclined portion whose outer wall surface inclines at a single angle like the conventional capped container, by forming the shoulder 16 with a two-stage inclination in which the inclination angle of the outer wall surface becomes smaller from the body portion 11 side toward the neck portion 12 side, the cap 20 can be easily removed from the container body 10 with a small force (torque).

[0062] Moreover, in the capped container 1 according to the present embodiment, since the inclination angle θ1 is set within the range of 15% to 85% with respect to the inclination angle θ2, when removing the cap 20, the lower end portion 21e of the cap body 21 can be smoothly transferred from the outer wall surface of the second inclined portion 15 to the outer wall surface of the first inclined portion 13. Therefore, in the capped container 1, the operating feeling felt by the user when removing the cap 20 from the container body 10 can be made smooth. Specifically, when the user tries to remove the cap 20, by slightly twisting the cap 20 with a small force around the cylinder axis Ax10, the lower end portion 21e of the cap body 21 slides up on the first inclined portion 13. For this reason, the user can feel that the cap 20 is automatically removed from the container body 10 and can experience a smooth operating feeling.

[0063] Also, when the user tries to remove the cap 20 from the container body 10, when the lower end portion 21e of the cap body 21 slides up on the first inclined portion 13 when the cap 20 is twisted around the cylinder axis Ax10, a sound of "click" is emitted at the timing when the lower end portion 21e transfers from the first inclined portion 13 to the second inclined portion 15. For this reason, the user can feel a click feeling by hearing this "click" sound, and thereby can confirm that the cap 20 has been removed from the container body 10.

[0064] Moreover, in the capped container 1 according to the present embodiment, since the ratio of the inclination angle θ1 to the inclination angle θ2 is set within the more desirable range of 15° to 55°, the lower end portion 21e of the cap body 21 transferred from the outer wall surface of the second inclined portion 15 can be smoothly moved upward in the Z direction.

[0065] Further, in the capped container 1, since the inclination angle θ1 is set within the range of 15° to 55°, it is advantageous for accurately aligning the cylinder axis of the cap 20 with respect to the cylinder axis Ax10 of the container body 10 when attaching the cap 20 to the container body 10. That is, by making the inclination angle θ1 of the outer wall surface in the first inclined portion 13 looser within the range of 15° to 55° than the shoulder portion of the capped container according to the prior art, the cap 20 can be guided (guided in a direction intersecting the cylinder axis Ax10 of the container body 10) so that the cylinder axis of the cap 20 aligns with the cylinder axis Ax10 of the container body 10.

[0066] Also, in the capped container 1 according to the present embodiment, since the height dimension of the second inclined portion 15 is set within the range of 0.5 mm to 2 mm, when the attached cap 20 is twisted around the cylinder axis in an attempt to remove the cap 20 from the container body 10, the outer wall surface of the second inclined portion 15 serves as the starting point (trigger) for releasing the locked state.

[0067] Also, in the capped container 1 according to the present embodiment, since the height dimension L4 of the second inclined portion 15 is set within the range of 5% to 50% with respect to the height dimension L3 of the shoulder portion 16, when moving the cap in a direction away from the body portion, the second inclined portion 15 can be used as a trigger to immediately guide the lower end portion 21e of the cap body 21 to the outer wall surface of the first inclined portion 13. Therefore, in the capped container 1, it is possible to remove the cap 20 from the container body 10 more simply (with a small twisting torque) than before.

[0068] Also, in the capped container 1 according to the present embodiment, as shown in FIG. 5, since four second inclined portions 15 are provided in a part of the periphery of the first inclined portion 13 (a part of the periphery of the first inclined portion 13 in a top view from the upper side in the Z direction), it is possible to simply remove the cap 20 with a minimum necessary configuration compared to the case where the second inclined portion 15 is provided so as to surround the entire periphery of the first inclined portion 13.

[0069] In addition, in the capped container 1 according to the present embodiment, the height dimension L3 of the shoulder portion 16 in the container body 10 is within the range of 7% to 38% with respect to the height dimension L1 of the body portion 11, and the ratio of the height dimension of the shoulder portion 16 to the height dimension of the body portion 11 is made relatively large. Therefore, in the capped container 1, when a user tries to remove the cap 20 and derive the accommodated object (eye drops) from the mouth portion of the nozzle portion 17, it is possible to visually confirm while suppressing the portion to be derived from being blocked by the body portion.

[0070] In addition, in the capped container 1 according to the present embodiment, the inner wall surface 16b of the shoulder portion 16 is formed with an inclination angle θ3 so as to follow the outer wall surface of the first inclined portion 13, and the inclination angle θ3 is also set to 55° or less in the same manner as the inclination angle θ1. Therefore, when the accommodated eye drops are derived from the mouth portion of the neck portion 12 through the nozzle portion 17, it is difficult to remain on the inner wall surface 16b of the shoulder portion 16. Therefore, in the capped container 1, the eye drops can be derived and partitioned, which is excellent in terms of the environment.

[0071] As described above, in the capped container 1 according to the present embodiment, it is possible to remove the cap 20 from the container body 10 more easily. In the present embodiment, since a corner R is provided at the lower end portion of the second inclined portion 15, when the cap 20 is twisted, a force in the Z direction for separating the cap 20 from the container body 10 is applied from the start of twisting. This is more advantageous for easily removing the cap 20 from the container body 10.

[0072] 6. Confirmation experiment Hereinafter, the results of the experiment conducted to confirm the above effects will be described. In this confirmation experiment, the container body was fixed to a torque meter (models: 3TME20CN2, 3TME100CN2, manufactured by Tokyu Corporation), the cap was gripped and twisted, and the torque measured when the cap was opened was measured, and the peak value was evaluated as the torque value.

[0073] (1) Ratio of the inclination angle θ1 and the inclination angle θ2 Regarding the relationship between the ratio of the inclination angle θ1 and the inclination angle θ2 and the torque, as shown in the following table, four types of examples (Examples 1 to 4) and one type of comparative example (Comparative Example 1) were used for evaluation.

[0074]

Table 1

[0075] As shown in Table 1 above, for "Comparative Example 1", no second inclined portion was provided on the shoulder portion, and it was configured with one inclined portion (single-stage taper). In this case, the measured torque value was "75.0 cN·m".

[0076] On the other hand, in "Example 1" to "Example 4", a second inclined portion 15 was provided on the shoulder 16 to form a two-stage taper. The measured torque values of "Example 1" to "Example 4" were "6.1 cN·m", "9.0 cN·m", "11.0 cN·m", and "41.0 cN·m", which were lower than the measured torque value of "Comparative Example 1".

[0077] Also, for "Example 4", the inclination angle θ1 was set to "50°" close to "55°", and θ1 / θ2 was set to "83.0%" close to "85%". Therefore, it is considered that "Example 4" had a larger measured torque value of "41.0 cN·m" than "Example 1" to "Example 3". Since the inclination angle θ2 was set to 60°, in "Example 4", the value of θ1 / θ2 became "83.0%" close to "85%". In "Example 4", the measured torque value was "41.0 cN·m", which was smaller than that of "Comparative Example 1".

[0078] On the one hand, in "Example 1" to "Example 3", the value of θ1 / θ2 was set to "43.0%", "50.0%", and "19.0%" within the range of "15% to 85%". Also, in "Example 1" to "Example 3", the inclination angle θ1 was set to "30°", "30°", and "15°" within the range of "15° to 55°". For this reason, the measured torque values were "6.1 cN·m" for "Example 1", "9.0 cN·m" for "Example 2", and "11.0 cN·m" for "Example 3", all of which were significantly lower than those of "Example 4". In particular, in "Example 1" where the value of θ1 / θ2 was "43.0%" within the range of "30% to 45%", a very low torque value of "6.1 cN·m" was measured.

[0079] From the above results, by providing the shoulder portion 16 having the first inclined portion 13 and the second inclined portion 15, the torque value when opening the cap 20 can be made small. Also, by setting the ratio of θ1 / θ2 within the range of "15% to 85%", the torque value can be significantly suppressed to a low level. Furthermore, setting the inclination angle θ1 within the range of "15° to 55°" is also effective in suppressing the torque value to a low level.

[0080] (2) Ratio of the height dimension L3 of the shoulder portion 16 to the height dimension L4 of the second inclined portion 15 Regarding the relationship between the ratio of the height dimension L3 of the shoulder portion 16 to the height dimension of the second inclined portion 15 and the torque, four types of examples (Examples 5 to 8) were evaluated as shown in the following table.

[0081]

Table 2

[0082] As shown in Table 2 above, for "Example 5" to "Example 8" as well, since the shoulder portion 16 is configured with a two-stage taper, the measured torque value is suppressed lower than that of "Comparative Example 1" shown in Table 1 above. In particular, in "Example 5" to "Example 7" where the value of L4 / L3 is within the range of "5% to 50%", a much lower torque value was measured than in "Example 8" where the value of L4 / L3 exceeds "50%" and is "63.0%".

[0083] Here, when looking at the measured torque values of "Example 5" to "Example 8", "Example 6" is approximately 1 / 3 of "Example 8", and "Example 5" and "Example 7" are approximately 1 / 2 of "Example 6".

[0084] From the above results, as described above, by providing the shoulder portion 16 having the first inclined portion 13 and the second inclined portion 15, the torque value when opening the cap 20 can be made small. Also, by setting the ratio of L4 / L3 within the range of "10% to 50%", the torque value can be significantly suppressed to a low level. Furthermore, by setting the value of L4 / L3 within the range of "5% to 15%", the torque value can be suppressed to be lower than "10 cN·m".

[0085] [Modification Example] In the capped container 1 according to the above embodiment, the body portion 11 having the flat bottom wall 11c is adopted, but in the present invention, the bottom wall of the body portion is not limited to the flat shape. For example, a bottom wall having a curved surface on both the outer surface and the inner surface may be used. And in this case, there may not be a clear boundary between the bottom wall and the peripheral wall.

[0086] Also, regarding the cap 20, a configuration having the flat ceiling wall 21b is adopted, but in the present invention, the ceiling wall of the cap is not limited to the flat shape. Also in this case, there may not be a clear boundary between the ceiling wall and the peripheral wall.

[0087] The capped container 1 according to the above embodiment is, as an example, configured to accommodate eye drops as an object, but the present invention does not limit the object to be accommodated. For example, cosmetics, chemicals, etc. may be used as the object.

Explanation of Reference Numerals

[0088] 1 Capped container 10 Container body 11 Body portion 12 Neck portion 12a Locking convex portion (locking portion) 13 First inclined part 14 Convex part 15 Second inclined part 16 Shoulder part 20 Cap 21 Cap body 21c Lower end part (cap opening edge) 22 Locking arm part 22a Locking recess (locked part)

Claims

1. A container body capable of storing an object, A cap detachably locked to the container body, and comprising The container body has a cylindrical body portion having a bottom wall and a peripheral wall rising from the outer peripheral edge of the bottom wall, A shoulder portion connected to the other end of the body portion of the body portion on the side opposite to the bottom wall, and having a shape gradually decreasing in diameter as it moves away from the body portion, One end is connected to the end of the shoulder portion opposite to the other end of the body portion, and an opening portion through which the object can be led out is provided at the end opposite to the connection portion with the shoulder portion, and a locking portion for locking with the cap is provided on a part of the outer periphery, and a cylindrical neck portion having having The cap has a cylindrical cap body having a ceiling wall and a peripheral wall hanging down from the outer peripheral edge of the ceiling wall, A locking arm portion formed to extend along the peripheral wall of the cap body from the inner surface of the ceiling wall of the cap body and having a locked portion for locking with the locking portion of the neck portion, having The container body is integrally formed such that the body portion, the shoulder portion, and the neck portion have a common cylindrical axis, The shoulder portion of the container body is connected to the one end of the neck portion and has a first inclined portion having an outer wall surface inclined at a predetermined first angle with respect to the cylindrical axis, It is connected to the other end of the body portion of the body portion and has an outer wall surface inclined at a second angle larger than the first angle with respect to the cylindrical axis, and a second inclined portion having an end on the neck portion side connected to the outer wall surface of the first inclined portion, having The outer wall surface of the second inclined portion is formed so as to be a starting point when the locking state between the locking portion and the locked portion is released when the cap is twisted around the cylindrical axis with respect to the container body. A container with a cap.

2. The first angle is set within a range of 15% to 85% with respect to the second angle. The capped container according to claim 1.

3. The first angle is set within a range of 15° to 55°. The capped container according to claim 1 or claim 2.

4. The inner wall surface at the shoulder is formed to follow the outer wall surface of the first inclined portion. The capped container according to claim 3.

5. In the direction along the cylinder axis, the height dimension of the second inclined portion is set within a range of 0.5 mm to 2 mm. The capped container according to claim 1 or claim 2.

6. In the direction along the cylinder axis, the height dimension of the second inclined portion is set within a range of 5% to 50% with respect to the height dimension of the shoulder. The capped container according to claim 1 or claim 2.

7. The body portion is an annular wall portion that intersects the direction along the cylinder axis between the peripheral wall of the body portion and the other end of the body portion, and has the annular wall portion that the cap opening edge in the cap faces when the cap is attached. When viewing the shoulder from above from the neck side in the direction along the cylinder axis, The first inclined portion has an oval shape or a rounded rhombus shape, and a part of the end portion on the body portion side is arranged at a distance from the annular wall portion. The second inclined portion is formed so as to close the space between a part of the end portion in the first inclined portion and the annular wall portion. The capped container according to claim 1 or claim 2.

8. In the direction along the cylinder axis, the height dimension of the shoulder is set within a range of 7% to 38% with respect to the height dimension of the body portion. The capped container according to claim 1 or claim 2.

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