JP6910060B2 - Cap that can be separated from the container mouth - Google Patents

Description

The present invention relates to a cap that can be easily separated from the container mouth at the time of separate collection.

Conventionally, many caps have been proposed that can be easily separated from the container mouth at the time of separate collection.
Therefore, Patent Document 1 describes a synthetic resin hinge cap in which the inner lid and the outer lid are integrally connected by a wide thin-walled rotating fulcrum hinge in the center and a three-point snap hinge composed of narrow elastic bands on both sides. In, a vertical weakening line passing through one side of the base of the wide thin-walled rotation fulcrum hinge is formed on the outer peripheral wall, and a continuous circumferential weakening line is formed along the inside of the base of the thin-walled rotation fulcrum hinge. A hinge cap formed on the fitting upper wall for easy separation and recovery is described.

Japanese Unexamined Patent Publication No. 2001-151258

However, in the cap according to Patent Document 1 described above, when the outer lid is grasped and pulled to the side opposite to the dispensing cylinder, stress is concentrated on the base of the wide thin-walled rotating fulcrum hinge, so that the vertical weakening line and the circumference are formed. A structure is adopted that tears from the vicinity of the connection with the directional weakening line, but with this structure, even if the outer lid is pulled, the vicinity of the connection between the vertical weakening line and the circumferential weakening line can be easily torn. There is a concern that the cap cannot be smoothly separated from the container mouth.

Further, in the cap according to Patent Document 1 described above, it is unintended if a force is applied to the cap from the outside when the cap is attached to the container and handled as a product or while the product is being transported. There is also a concern that the weakening line will be cut at the timing.

The present invention has been made in view of this point, and when the cap is separated from the container mouth, the cap can be easily separated, and the container suppresses the cutting of the weakened portion at an unintended timing. It is intended to provide a cap that is separable from the mouth.

(Aspect of the invention)
The aspects of the invention shown below exemplify the configurations of the present invention, and are described in terms of terms in order to facilitate understanding of the various configurations of the present invention. Each section does not limit the technical scope of the present invention, and while taking into consideration the best mode for carrying out the invention, some of the components of each section are replaced, deleted, or further others. Those to which the above-mentioned components are added are also included in the technical scope of the present invention.

(1) A cap that is separable from the container mouth and includes a cap body that is fitted to the container mouth and a lid that is connected to the cap body via a hinge. The cap body is the container. An inner cylinder having a top surface portion fitted to the mouth and an outer cylinder integrally connected to the inner cylinder at the upper end and arranged concentrically around the inner cylinder at intervals are provided. The hinge includes a main hinge portion and an elastic film portion connected to the main hinge portion, and the hinge weakening portion for separating the elastic film portion from the cap body and continuous from the hinge weakening portion. Then, in order to separate the outer cylinder from the inner cylinder in succession from the first vertical weakening portion for splitting the outer cylinder in the vertical direction and the first vertical weakening portion. It has a first circumferential weakening portion and a second vertical weakening portion for continuously cutting the inner cylinder in the vertical direction and dividing the inner cylinder from the first circumferential weakening portion. A cap that can be separated from the characteristic container mouth (corresponding to the invention of claim 1).
In the cap that can be separated from the container mouth described in item (1), the hinge weakened portion is easily cut by pulling the lid from the cap body outward in the radial direction and slightly counterclockwise. The elastic membrane portion of the hinge can be separated from the cap body. As a result, when the cap is separated from the container mouth, the initial cutting action on the plurality of weakened portions can be smoothly performed.
Subsequently, when the lid body is pulled from the cap body outward in the radial direction and slightly downward, the first longitudinal weakening portion is easily cut continuously from the hinge weakening portion. The outer cylinder can be cut in the vertical direction to divide the outer cylinder. Subsequently, when the lid is pulled counterclockwise, the weakening portion in the first circumferential direction is easily cut continuously from the weakening portion in the first vertical direction, and the outer cylinder is separated from the inner cylinder in a part range. Can be done. Subsequently, when the lid is pulled slightly upward, the second longitudinal weakening portion is easily cut continuously from the first circumferential weakening portion, the inner cylinder is torn in the vertical direction, and the inner cylinder is divided. Can be made to. As a result, the container mouth is exposed to the outside, the binding force of the cap body by the inner cylinder is weakened, and if the lid body is continuously pulled, the cap can be separated from the container mouth.

(2) A cap that is separable from the container mouth according to item (1), and is a second circumferential weakening portion for separating the inner cylinder from the top surface portion continuously from the second vertical weakening portion. A cap that can be separated from the container mouth (corresponding to the invention of claim 2).
In the cap that can be separated from the container mouth described in item (2), if the lid is pulled slightly counterclockwise after cutting the second vertical weakening portion, it will continue from the second vertical weakening portion. Therefore, the weakened portion in the second circumferential direction is easily cut, and the inner cylinder can be separated from the top surface portion in a part of the range, and the range exposed to the outside of the container mouth is increased, and as a result, the cap by the inner cylinder is increased. The binding force of the main body is further weakened, and the cap can be easily separated from the container mouth.

(3) A cap that is separable from the container mouth according to item (2), wherein the lid has a body portion having a top surface portion and buckling suspended from the top surface portion inside the body portion. Equipped with a restraint
When the lid body is crowned on the cap body, the lower end surface of the buckling suppressing portion abuts on the cap body inside the first and second circumferential weakening portions in the radial direction. A cap that can be separated from the container mouth (corresponding to the invention of claim 3).
The cap that can be separated from the container opening described in item (3) has a large size on the cap from the outside when the cap is attached to the container opening and handled as a product or during transportation of the product, that is, during the distribution process. Even if a force is applied, the buckling suppressing portion can suppress the buckling of the lid. As a result, it is possible to suppress cutting of the weakened portions in the first and second circumferential directions at an unintended timing.

(4) A cap that can be separated from the container mouth according to item (3), and when the lid body is covered with the cap body, the lower end surface of the buckling suppressing portion becomes the end surface of the container mouth. A cap separable from the container mouth, which is arranged at opposite positions (corresponding to the invention of claim 4).
In the cap that can be separated from the container mouth described in item (4), the buckling suppression portion can be supported from below by the container mouth, and the buckling of the cap, and thus the first and second caps at unintended timings. It is possible to further suppress the cutting of the weakened portion in the circumferential direction.

(5) The ratio of the area where the lower end surface of the buckling suppressing portion and the end surface of the container mouth overlap with each other to the area of the end surface of the container mouth, which is a cap separable from the container mouth according to item (4). Is a cap that can be separated from the container mouth, which is characterized by being 1/2 or more.
In the cap described in item (5), which can be separated from the container mouth, the buckling suppression portion can be appropriately supported from below by the container mouth, and the buckling of the cap can be more appropriately performed than in the cap described in item (4). As a result, it is possible to further suppress the cutting of the weakened portions in the first and second circumferential directions at an unintended timing.

In the cap separable from the first container port according to the present invention, when the user separates the cap from the container port, the hinge weakening portion is first cut to cap the elastic film portion of the hinge. Since the cap is separated from the container mouth by separating from the main body and then cutting the first longitudinal weakening portion, the first circumferential weakening portion, and the second longitudinal weakening portion, the initial cutting action on a plurality of weakened portions can be performed. It can be done smoothly.
Further, in the cap separable from the second container mouth according to the present invention, since the lid body is provided with a buckling suppressing portion, buckling of the lid body is suppressed even if a large force is applied to the cap from the outside. As a result, it is possible to suppress the cutting of the weakened portion at an unintended timing.

FIG. 1 is a cross section of a state in which the cap according to the embodiment of the present invention is attached to the container mouth. FIG. 2 is a top view of the cap according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of the cap according to the embodiment of the present invention. FIG. 4 is a bottom view of the cap according to the embodiment of the present invention. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIG. 6 is an enlarged view of part B of FIG. FIG. 7 is a cross-sectional view taken along the line CC of FIG. FIG. 8 is a cross-sectional view taken along the line DD of FIG. FIG. 9 is an enlarged view of part E of FIG. FIG. 10 is an enlarged view of the F portion of FIG. FIG. 11 is an enlarged view of the G portion of FIG. FIG. 12 is a cross-sectional view taken along the line HH of FIG. FIG. 13 is a cross-sectional view taken along the line II of FIG. FIG. 14 is an enlarged view of part J of FIG. FIG. 15 is a cross-sectional view taken along the line KK of FIG. FIG. 16 is a plan view showing how the cap according to the embodiment of the present invention is separated from the container mouth. FIG. 17 is a plan view showing how the cap according to the embodiment of the present invention, which continues from FIG. 16, is separated from the container mouth.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS. 1 to 17.
The cap 1 according to the embodiment of the present invention is configured to be separable from the container opening 10. As shown in FIGS. 1 and 2, the cap 1 includes a cap body 2 fitted to a container mouth 10 of a container filled with contents, and a lid connected to the cap body 2 via a hinge 3. The body 4 and the cap body 2 are provided with a weakening portion 5 for easily separating the cap body 2 from the container opening 10. The cap 1 is integrally molded with a synthetic resin.

As shown in FIG. 1, the container port 10 has a large-diameter fitting port 12 formed at the upper end thereof. A tapered surface 13 whose diameter is gradually reduced upward is formed on the outer wall surface of the upper end of the large-diameter fitting port 12. A small-diameter fitting port 14 is formed below the large-diameter fitting port 12. The axial length of the large-diameter fitting port 12 and the axial length of the small-diameter fitting port 14 are substantially the same. Below the small-diameter fitting port 14, a large-diameter support port 15 having a diameter larger than that of the large-diameter fitting port 12 is formed.

As shown in FIGS. 1 to 4, the cap body 2 has a cylindrical inner cylinder 18 fitted to the container opening 10 and a cylindrical shape arranged concentrically around the inner cylinder 18 at intervals. The outer cylinder 19 and the cylindrical fitting portion 20 arranged concentrically inside the inner cylinder 18 and the cylindrical fitting portion 20 are concentrically arranged inside the tubular fitting portion 20. A cylindrical cylindrical discharge portion 21 to be arranged is provided. The upper end of the outer cylinder 19, the upper end of the inner cylinder 18, and the upper end of the tubular fitting portion 20 are integrally connected by the annular top surface portion 23. The annular top surface portion 23 extends in the horizontal direction. A tubular protrusion 24 is projected upward on the upper surface of the annular top surface 23 and inside the inner cylinder 18. An annular locking protrusion 25 is formed on the outer peripheral surface of the tubular protrusion 24. On the lower inner wall surface of the inner cylinder 18, a locking protrusion 26 for locking the large-diameter fitting port 12 of the container port 10 is formed. As can be seen from FIGS. 4 and 14, the locking protrusion 26 is formed in an annular shape except for a part of the range (the range in which the second vertical weakening portion 59 described later is formed).

An annular space 33 into which the container port 10 is fitted is formed between the inner cylinder 18 of the cap body 2 and the tubular fitting portion 20. On the lower surface of the annular top surface portion 23, a tubular sealing auxiliary portion 35 is vertically installed toward the annular space 33 between the inner cylinder 18 and the tubular fitting portion 20. The lower end of the tubular fitting portion 20 and the lower end of the tubular discharge portion 21 are integrally connected by the annular bottom surface portion 36. The annular bottom surface portion 36 extends in the horizontal direction. A discharge hole 30 is formed in the tubular discharge portion 21. The discharge hole 30 communicates with the container port 10. A circular closing plate-shaped portion 31 in a plan view is integrally connected to the lower inner wall surface of the tubular discharge portion 21 so as to close the discharge hole 30. A diamond-shaped plug portion 38 in a plan view is integrally connected to the closed plate-shaped portion 31 via an annular weakening portion 39. The annular weakening portion 39 forms an annular thin film portion 41 that can be easily cut by forming an annular V-shaped groove portion 40 on the lower surface of the closed plate-shaped portion 31 so as to correspond to the outer shape of the plug portion 38. It is composed of. A ring-shaped grip portion 42 is integrally connected to the plug portion 38. Then, when the user first discharges the contents, the grip portion 42 is pulled upward to cut the annular thin film portion 41 which is the annular weakening portion 39 around the plug portion 38, whereby the plug portion 38 is released. The discharge hole 30 is opened by separating from the closing plate-shaped portion 31, and the contents are discharged from the discharge hole 30.

The hinge 3 is integrally connected to the outer wall surface of the annular top surface portion 23 (outer cylinder 19) of the cap body 2. The cap body 2 is integrally connected to the lid 4 via a hinge 3. The hinge 3 includes a main hinge portion 45 and elastic film portions 46, 46 integrally connected to both sides of the main hinge portion 45. The main hinge portion 45 is formed in a substantially rectangular shape in a plan view. The main hinge portion 45 extends in the horizontal direction. On the upper surface of the main hinge portion 45, a groove portion 47 extending in a direction orthogonal to the arrangement direction is formed at a position substantially intermediate in the arrangement direction of the cap body 2 and the lid body 4. Each elastic film portion 46 is formed to be thinner than the main hinge portion 45. Each elastic film portion 46 has higher elasticity than the main hinge portion 45. As can be seen from FIG. 5, each elastic film portion 46, 46 is gradually inclined downward from the connection portion with the main hinge portion 45.

The lid 4 is concentrically arranged inside the body 50 to which the hinge 3 is connected, the substantially circular top surface 51 integrally connected to the outer periphery of the upper end of the body 50, and the inside of the body 50. Cylindrical tubular buckling suppressing portion 52 vertically suspended from the top surface portion 51 and cylindrical tubular buckling suppressing portion 52 arranged concentrically inside the tubular buckling suppressing portion 52 and vertically suspended from the top surface portion 51. A unit 53 and the like are provided. A locking projection 55 extending in an annular shape is formed on the lower inner wall surface of the body portion 50. The length of the tubular buckling suppressing portion 52 is formed to be slightly longer than the length of the tubular sealing portion 53. A plurality of reinforcing ribs 54 may be integrally formed in the annular space between the body portion 50 and the tubular buckling suppressing portion 52 at intervals along the circumferential direction. These reinforcing ribs 54 can increase the rigidity of the tubular buckling suppressing portion 52.

The weakening portion 5 is configured so that the user can easily cut the portion by pulling the lid body 4, and a plurality of weakening portions 56, 57, 58, 59, 60 described below are described. Consists of. The weakening portion 5 is provided on one elastic film portion 46 of the hinge 3, and a hinge weakening portion 56 (see FIG. 6) for separating the one elastic film portion 46 from the cap body 2 and the hinge weakening portion 56. Continuously from, the outer cylinder 19 including the annular top surface portion 23 of the cap body 2 is torn in the vertical direction, and the first vertical weakening portion 57 (see FIGS. 4 and 6) for dividing the outer cylinder 19 The first circumferential weakening portion 58 (see FIGS. 2 and 6) for separating the outer cylinder 19 from the inner cylinder 18 and the first circumferential weakening portion 58 continuously from the first longitudinal weakening portion 57. Continuously from the second vertical weakening unit 59 (see FIGS. 4 and 12) for cutting the inner cylinder 18 in the vertical direction and dividing the inner cylinder 18 and the second vertical weakening unit 59. The inner cylinder 18 of the cap body 2 is composed of a second circumferential weakening portion 60 (see FIGS. 2 and 11) for separating the inner cylinder 18 from the annular top surface portion 23.

As shown in FIGS. 6 and 7, the hinge weakening portion 56 has a cross section on the upper surface of one elastic film portion 46 of the hinge 3 over the entire contact portion with the outer cylinder 19 including the annular top surface portion 23 of the cap body 2. By forming the U-shaped groove portion 62, a hinge-side thin film portion 63 that can be easily cut is formed at the portion. Then, while pulling the lid 4 from the cap body 2 outward in the radial direction, by pulling it slightly counterclockwise in FIG. 2, the hinge weakening portion 56, that is, the hinge-side thin film portion 63 becomes the main hinge thereof. It is cut from one end away from the portion 45 toward the main hinge portion 45. As a result, one elastic film portion 46 of the hinge 3 can be separated from the cap body 2.

Further, as shown in FIG. 6, the first vertical weakening portion 57 is continuously provided from the other end of the hinge weakening portion 56 on the main hinge portion 45 side. As shown in FIGS. 6, 8 and 9, the annular top surface portion 23 on which the other end of the hinge weakening portion 56 on the main hinge portion 45 side is located has a top view triangle extending in the vertical direction from the upper surface of the annular top surface portion 23. The upper vertical hole portion 65 of the shape is provided. Further, in the range from the inner wall surface of the outer cylinder 19 to the annular top surface portion 23, the inner wall surface of the outer cylinder 19 extends in the vertical direction from the lower end surface thereof at the same position and substantially the same shape as the upper vertical hole portion 65. A V-shaped lower vertical groove portion 66 is formed in a bottom view, and is continuous from the lower vertical groove portion 66, and in the range of the annular top surface portion 23, has substantially the same shape as the lower vertical groove portion 66 in the vertical direction. A triangular lower vertical hole 66 extending in a downward view is formed. The upper vertical hole portion 65 and the lower vertical groove portion (hole portion) 66 are formed at positions where they overlap in a plan view.

As a result, the first vertical weakening portion 57 includes an easily cutable upper vertical thin film portion 67 provided in a range where the upper vertical hole portion 65 is formed on the outer peripheral portion of the annular top surface portion 23, and an outer cylinder. An annular thin film portion 68 in the lower longitudinal direction extending in the vertical direction to the extent in which the lower longitudinal groove portion (hole portion) 66 is formed at the peripheral wall portion and the outer peripheral portion of the annular top surface portion 23 of 2. The top surface portion 23 includes a lateral thin film portion 69 provided between the upper vertical hole portion 65 and the lower vertical hole portion 66 and easily cut. Then, after separating one elastic film portion 46 of the hinge 3 from the cap main body 2, the lid 4 is further pulled outward from the cap main body 2 in the radial direction slightly downward to weaken the first vertical weakening portion. 57, that is, the upper vertical thin film portion 67, the horizontal thin film portion 69, and the lower vertical thin film portion 68 are sequentially cut, and the outer cylinder 19 including the annular top surface portion 23 is torn in the vertical direction, and the outer cylinder is cut. 19 is divided.

Further, as shown in FIGS. 2 and 6, a first circumferential weakening portion 58 is provided continuously from the upper end of the first vertical weakening portion 57. As shown in FIG. 10, the first circumferential weakening portion 58 has a first circumferential groove portion 72 having a V-shaped cross section on the upper surface of the annular top surface portion 23 between the inner cylinder 18 and the outer cylinder 19 of the cap body 2. By forming a predetermined circumferential range, the first circumferential thin film portion 73 that can be easily cut is formed on the peripheral wall portion of the annular top surface portion 23 in this range. In the present embodiment, the first circumferential weakening portion 58 (first circumferential thin film portion 73) is formed in a range of approximately 60 ° in the counterclockwise direction from the first longitudinal weakening portion 57 in FIG. As shown in FIGS. 2 and 11, one end of the first circumferential weakening portion 58, that is, the first circumferential groove portion 72, which is separated from the hinge 3, is bent toward the radial center of the cap body 4. ing. Then, the outer cylinder 19 including the annular top surface portion 23 is torn in the vertical direction to divide the outer cylinder 19, and then the lid 4 is pulled outward in the radial direction from the cap body 2 while being slightly counterclockwise in FIG. When pulled in the circumferential direction, the range in which the weakening portion 58 in the first circumferential direction is formed, that is, the thin film portion 73 in the first circumferential direction is cut, and the outer cylinder 19 is separated from the inner cylinder 18 in this range.

As shown in FIG. 11, a second longitudinal weakening portion 59 is provided continuously from the end portion of the first circumferential weakening portion 58 toward the radial center of the cap body 4. As shown in FIGS. 11 to 14, on the outer wall surface of the inner cylinder 18 that coincides with the end portion of the first circumferential weakening portion 58 toward the radial center, from the lower end surface of the inner cylinder 18 in the vertical direction in the shape of a bottom view trapezoid. A vertical groove portion 75 extending to the surface is provided. As a result, the second vertical weakening portion 59 is an easily cutable vertical thin film portion 76 provided in a range where the vertical groove portion 75 is formed on the peripheral wall portion of the inner cylinder 18, and the vertical groove portion 75. A lateral thin film portion 77 that can be easily cut is provided between the upper end of the portion and the bottom portion of the portion of the first circumferential groove portion 72 that is configured of the first circumferential weakening portion 58 toward the radial center. It is composed of. As can be seen from FIG. 14, in order to form the vertically cuttable thin film portion 76, the locking protrusion portion provided on the inner wall surface of the inner cylinder 18 is provided in the range where the longitudinal groove portion 75 is formed. 26 is divided.

Then, the weakening portion 58 in the first circumferential direction (thin film portion 73 in the first circumferential direction) is cut, the outer cylinder 19 is separated from the inner cylinder 18 within a predetermined range, and then the lid 4 is radially outward from the cap body 2. When the second vertical weakening portion 59, that is, the vertical thin film portion 76 and the horizontal thin film portion 77 are sequentially cut, and the inner cylinder 18 is torn in the vertical direction. The inner cylinder 18 is divided, and the container opening 10 is exposed from the portion. As shown in FIG. 11, the second circumferential weakening portion 60 is provided continuously from the end (upper end of the second longitudinal weakening portion 59) of the cap body 4 of the first circumferential weakening portion 58 toward the radial center. Be done.

As shown in FIGS. 2, 11 and 15, the second circumferential weakening portion 60 is one end (cap body 4) of the first circumferential groove 73 having a V-shape in cross section constituting the first circumferential weakening portion 58. It is formed continuously from the end toward the radial center of. The second circumferential weakening portion 60 forms a second circumferential groove 79 having a V-shaped cross section on the upper surface of the annular top surface portion 23 along the upper end of the inner cylinder 18 in a predetermined circumferential direction. A second circumferential thin film portion 80 that can be easily cut is formed between the bottom portion of the second circumferential groove portion 79 and the upper inner wall surface of the inner cylinder 18. The second circumferential groove portion 79 is formed along the outer periphery of the base portion of the tubular protrusion portion 24 provided on the annular top surface portion 23 of the cap body 2. In the present embodiment, the second circumferential weakening portion 60 is substantially counterclockwise in FIG. 2 from the end portion (second longitudinal weakening portion 59) toward the radial center of the first circumferential weakening portion 58. It is formed in the range of 90 °. Then, the second vertical weakening portion 59 is cut, the inner cylinder 18 is cut in the vertical direction to divide the inner cylinder 18, and then the lid 4 is pulled outward in the radial direction from the cap body 2 while being further pulled outward. When pulled in the counterclockwise direction in FIG. 2, the range in which the second circumferential weakening portion 60 is formed, that is, the second circumferential thin film portion 80 is cut, and the inner cylinder 18 is removed from the annular top surface portion 23 in this range. Be separated.

Next, as shown in FIG. 1, the hinge 3 is bent around the groove 47 (see FIGS. 2 and 3) provided in the main hinge portion 45, and the lid 4 is covered from above the cap body 2. When covered, the locking protrusion 55 provided on the body 50 of the lid 4 is fitted so as to get over the locking protrusion 25 provided on the tubular protrusion 24 of the cap body 2, and the lid 4 is covered. The lower end surface of the body portion 50 of the cap body 2 comes into contact with the annular top surface portion 23 outside the tubular protrusion portion 24 of the cap body 2. Then, the tubular sealing portion 53 of the lid body 4 is tightly fitted inside the upper end of the tubular discharge portion 21 (discharge hole 30) of the cap body 2. Further, the lower end surface of the tubular buckling suppressing portion 52 provided on the top surface portion 51 of the lid body 4 comes into contact with the upper surface of the annular top surface portion 23 of the cap body 2. Further, the tubular protrusion 24 of the cap body 2 is arranged so as to be in contact with and sandwiched between the body 50 of the lid 4 and the tubular buckling suppressing portion 52.

In this state, at the position where the lower end surface of the tubular buckling suppressing portion 52 of the lid 4 comes into contact with the annular top surface portion 23 of the cap body 2, the lower end outer wall surface of the tubular buckling suppressing portion 52 is the tubular protrusion portion 24. At a position facing the end surface of the container opening 10 and facing the inner wall surface of the base portion of the first and second peripheral weakening portions 58 and 60 provided on the cap body 2, the first and second weakening portions 58 and 60 are radially inside. The position is close to the weakened portions 58 and 60 in the second circumferential direction. The ratio of the area where the tubular buckling suppressing portion 52 of the lid 4 and the end face of the container mouth 10 overlap to the area of the end face of the container mouth 10 is set to 1/2 or more. As a result, the tubular buckling suppressing portion 52 can be appropriately supported from below by the container opening 10, and the buckling of the cap 1 and, by extension, the first and second circumferential weakening portions 58 and 60 at unintended timings can be supported. It is possible to suppress the cutting of.

Further, as in the present embodiment, when the lid 4 is put on the cap body 2, the lower end outer wall surface of the tubular buckling suppressing portion 52 may be brought into contact with the base inner wall surface of the tubular protrusion 24. In this case, the tubular buckling suppressing portion 52 facilitates positioning of the lid 4 with respect to the cap body 2, and more specifically, the lid 4 can be arranged concentrically with respect to the cap body 2. Moreover, this makes it possible to improve the sealing property between the locking protrusion 25 in the tubular protrusion 24 of the cap body 2 and the lower inner wall surface of the body 50 of the lid 4.

From the viewpoint of suppressing the buckling of the lid body 4, the tubular buckling suppressing portion 52 faces the end surface of the container opening 10 in a direction as far as possible from the body portion 50 of the lid body 4 toward the radial center. It is better to form it at the position where it is. On the other hand, by bringing the tubular buckling suppressing portion 52 closer to the body portion 50 of the lid 4 while considering other effects, the rigidity around the body portion 5 is improved, and an external force is applied to the cap 1. The influence of the addition on the weakening portions 58 and 60 in the first and second circumferential directions may be reduced.

When the lid 4 is crowned by the cap body 2, the hinge 3 is bent around the groove 47, so that the hinge weakening portion 56, that is, the U-shaped groove 62, which is a configuration of the weakening portion 5, is externally provided. It will not be exposed. Further, when the lid 4 is covered with the cap body 2, the first circumferential groove 72 as the first circumferential weakening portion 58 for separating the outer cylinder 19 from the inner cylinder 18 and the inner cylinder 18 are annularly topped. The second circumferential groove portion 79 as the second circumferential weakening portion 60 for separating from the surface portion 23 is not exposed to the outside because the body portion 50 of the lid 4 covers the groove portion 79. Further, the upper vertical hole portion 65, which is the configuration of the first vertical weakening portion 57, is also not exposed to the outside because the body portion 50 of the lid 4 covers the upper vertical hole portion 65.

After that, when the cap 1 is attached to the container opening 10, the container opening 10 is fitted into the annular space 33 between the inner cylinder 18 of the cap body 2 and the tubular fitting portion 20. Then, the large-diameter fitting port 12 of the container port 10 is inserted into the annular space 33 so as to get over the locking protrusion 26 provided on the inner wall surface of the inner cylinder 18 of the cap body 2. Then, the outer wall surface of the large-diameter fitting port 12 of the container port 10 is fitted to the inner wall surface above the locking projecting portion 26 of the inner cylinder 18, and the inside of the locking projecting portion 26 of the inner cylinder 18 is fitted. The wall surface fits into the outer wall surface of the small diameter fitting port 14 of the container port 10. At this time, the inner wall surface of the lower end of the tubular sealing auxiliary portion 35 provided on the cap body 2 is brought into close contact with the tapered surface 13 provided on the outer wall surface of the upper end of the large-diameter fitting opening portion 12 of the container opening 10, and the inside of the container opening 10 is provided. The airtightness of the is improved.

Next, the action of separating the cap 1 from the container opening 10 at the time of separate collection will be described with reference to FIGS. 16 and 17.
First, referring to FIG. 16, after using all the contents, the lid 4 is opened.
Next, the lid body 4 is gripped, and the lid body 4 is pulled outward in the radial direction from the cap body 2 while being pulled slightly counterclockwise in FIG. Then, the hinge weakening portion 56, that is, the hinge-side thin film portion 63 (see FIG. 7) starts cutting from one end (outermost end) away from the main hinge portion 45 toward the main hinge portion 45, and the hinge is hinged. One of the elastic film portions 46 of 3 is separated from the cap body 2.
Further, when the lid 4 is pulled outward from the cap body 2 in the radial direction and continuously pulled downward, the hinge weakening portion 56 is continuously weakened in the first vertical direction from the other end on the main hinge portion 45 side. The portion 57, that is, the upper vertical thin film portion 67, the horizontal thin film portion 69, and the lower vertical thin film portion 68 (see FIG. 8) are sequentially cut, and the outer cylinder 19 including the annular top surface portion 23 is cut in the vertical direction. Then, the outer cylinder 19 is divided.

After the outer cylinder 19 is divided, when the outer cylinder 19 is pulled away from the inner cylinder 18 together with the lid 4 in a slightly counterclockwise direction in FIG. 16, the outer cylinder 19 is continuously pulled from the first vertical weakening portion 57. It is cut along the range in which the weakening portion 58 in the one-circumferential direction is formed, that is, the range in which the thin film portion 73 in the first circumferential direction (see FIG. 10) is formed. Within this range, the outer cylinder 19 is separated from the inner cylinder 18.
Further, referring to FIG. 17, when the lid body 4 is pulled outward from the cap body 2 in the radial direction together with the outer cylinder 19 and pulled slightly upward, the end of the weakening portion 58 in the first circumferential direction (cap body 4). The second vertical weakening portion 59, that is, the vertical thin film portion 76 and the horizontal thin film portion 77 (see FIG. 12) are sequentially cut, and the inner cylinder 18 is vertically formed. The inner cylinder 18 is divided in the direction, and the container opening 10 is exposed from the portion. As a result, the binding force of the inner cylinder 18 of the cap body 2 to the container mouth 10 is weakened.

Finally, when the lid 4 is pulled outward in the radial direction from the cap body 2 and pulled slightly counterclockwise in FIG. 17, the second circumference is continued from the second vertical weakening portion 59. It is cut along the range where the direction weakening portion 60 is formed, that is, the range where the second circumferential thin film portion 80 (see also FIG. 15) is formed, and the inner cylinder 18 is separated from the annular top surface portion 23 in this range. Is done. As a result, the inner cylinder 18 is separated from the annular top surface portion 23 over approximately 90 ° in the counterclockwise direction from the second vertical weakening portion 59, and the exposed range of the container opening 10 is increased. The binding force of the inner cylinder 18 on the container opening 10 is further weakened, and finally, when the lid 4 or the entire cap 1 is pulled so as to be pushed up from below, the cap 1 is completely separated from the container opening 10.

As described above, the cap 1 according to the embodiment of the present invention includes a weakening portion 5 for easily separating the cap main body 2 from the container opening 10, and the weakening portion 5 is each of the hinges 3. Since one of the elastic film portions 46, 46 has a hinge weakening portion 56 for separating the elastic film portion 46 from the cap body 2, when the cap 1 is separated from the container opening 10, the lid body 4 is first separated. By pulling from the cap body 2 outward in the radial direction and slightly counterclockwise, the hinge weakening portion 56, that is, the hinge-side thin film portion 63 is easily cut, and one elastic film of the hinge 3 is easily cut. The portion 46 can be separated from the cap body 2. As a result, when the cap 1 is separated from the container mouth 10, the initial cutting action on the weakened portion 5 can be smoothly performed.

Further, in the cap 1 according to the embodiment of the present invention, when the cap 1 is separated from the container opening 10, the hinge weakening portion 56 is followed by the first vertical weakening portion 57 (upper vertical thin film portion 67, Lower vertical thin film portion 68 and horizontal thin film portion 69), first circumferential weakening portion 58 (first circumferential thin film portion 73), second longitudinal weakening portion 59 (longitudinal thin film portion 76 and horizontal thin film portion). By sequentially cutting the weakening portion 60 in the second circumferential direction (thin film portion 80 in the second circumferential direction), the cap 1 can be easily separated from the container opening 10. In particular, since the first vertical weakening portion 57 for dividing the outer cylinder 19 is formed continuously from the hinge weakening portion 56, the pulling force of the lid 4 when the hinge weakening portion 56 completes cutting is formed. Can be smoothly transmitted from the hinge weakening portion 56 to the first vertical weakening portion 57, and the first vertical weakening portion 57 can be smoothly cut.

Further, in the cap 1 according to the embodiment of the present invention, the lid 4 includes a tubular buckling suppressing portion 52 vertically hung from the top surface portion 51 inside the body portion 50, and the lid body 4 is attached to the cap body 2. The lower end surface of the tubular buckling suppressing portion 52 is located on the inner side in the radial direction of the first and second circumferential weakening portions 58 and 60 of the weakening portion 5, and the annular top surface portion of the cap body 2 is formed. It is configured to abut on 23. As a result, even if a large force is applied to the cap 1 from the outside when the cap 1 is attached to the container opening 10 and handled as a product, or while the product is being transported, the tubular buckling suppressing portion 52 provides the tubular buckling suppressing portion 52. , Buckling of the lid 4 can be suppressed. As a result, it is possible to suppress cutting of the weakened portion 5, specifically, the weakened portions 58 and 60 in the first and second circumferential directions at an unintended timing.

Furthermore, in the cap 1 according to the embodiment of the present invention, when the lid body 4 is crowned on the cap body 2, the lower end surface of the tubular buckling suppressing portion 52 is positioned at a position facing the end surface of the container opening 10. Be placed. As a result, the tubular buckling suppressing portion 52 can be supported from below by the container opening 10, and the buckling of the cap 1 and the weakening portion 5 at an unintended timing, specifically, the weakening in the first and second circumferential directions. It is possible to suppress the cutting of the portions 58 and 60.

In short, in the cap 1 according to the embodiment of the present invention, when the cap 1 is attached (plugged) to the container opening 10 or in the distribution process, particularly when a load or an impact is applied to the top surface of the lid 4. At a position where the lower end surface of the tubular buckling suppressing portion 52 is radially inside the first and second circumferential weakening portions 58 and 60 and faces the end surface of the container opening 10, the annular ceiling of the cap body 2 By abutting on the surface portion 23, the load and impact applied from the lower end of the body portion 50 of the lid 4 to the first and second circumferential weakening portions 58 and 60 are alleviated, and as a result, the first and second circumferential weakening portions are weakened. Cutting of parts 58 and 60 can be suppressed.

In order to easily separate the cap 1 from the container opening 10 at the time of separate collection or the like, it is necessary to make the strength of the weakened portion 5 provided in the cap 1 as weak as possible. On the other hand, when the cap 1 is attached to the container opening 10, or due to a load or impact during distribution, the weakened portion 5 is likely to break. Therefore, by providing the tubular buckling suppressing portion 52 at a position facing the end surface of the container mouth 10 inside the weakening portion 5 (particularly, the weakening portions 58 and 60 in the first and second circumferential directions), the weakening portion 5 Can be made as weak as possible.

1 cap, 2 cap body, 3 hinges, 4 lids, 5 weakened parts, 10 container mouths, 18 inner cylinders, 19 outer cylinders, 23 annular top surface (top surface), 45 main hinges, 46 elastic membranes, 50 Body part, 51 Top surface part, 52 Cylindrical buckling suppression part (buckling suppression part), 56 Hinge weakening part, 57 1st vertical weakening part, 58 1st circumferential weakening part, 59 2nd vertical weakening part, 60 Second peripheral direction weakening part

Claims (4)

A cap that is separable from the container mouth and includes a cap body that is fitted to the container mouth and a lid that is connected to the cap body via a hinge.
The cap body is integrally connected to the inner cylinder having a top surface portion fitted to the container mouth at the upper end, and is arranged concentrically around the inner cylinder at intervals. With an outer cylinder,
The hinge includes a main hinge portion and an elastic film portion connected to the main hinge portion.
A hinge weakening portion for separating the elastic film portion from the cap body,
Continuously from the hinge weakening portion, a first vertical weakening portion for vertically cutting the outer cylinder and dividing the outer cylinder, and a first vertical weakening portion.
Continuously from the first longitudinal weakening portion, a first circumferential weakening portion for separating the outer cylinder from the inner cylinder, and
Continuously from the first circumferential weakening portion, a second vertical weakening portion for vertically cutting the inner cylinder and dividing the inner cylinder, and
A cap that is separable from the container mouth, characterized by having. A cap that can be separated from the container mouth according to claim 1.
A cap separable from the container mouth, which is continuous from the second vertical weakening portion and has a second circumferential weakening portion for separating the inner cylinder from the top surface portion. A cap that can be separated from the container mouth according to claim 2.
The lid body includes a body portion having a top surface portion and a buckling suppressing portion vertically hung from the top surface portion inside the body portion.
When the lid body is crowned on the cap body, the lower end surface of the buckling suppressing portion abuts on the cap body inside the first and second circumferential weakening portions in the radial direction. A cap that can be separated from the container mouth. A cap that can be separated from the container mouth according to claim 3.
A cap that can be separated from the container mouth, characterized in that when the lid body is crowned on the cap body, the lower end surface of the buckling suppressing portion is arranged at a position facing the end surface of the container mouth.

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