JP7422624B2 - cap - Google Patents

Description

The present invention relates to a cap.

For example, as shown in Patent Document 1 below, a cap including a cap body and a slit valve disposed in an opening of the cap body is conventionally known.

Japanese Patent Application Publication No. 2002-347813

The cap as described above is provided with a member for holding down the slit valve in order to fix the slit valve to the cap body. Therefore, there is a problem in that the number of parts of the cap increases, and the number of man-hours and manufacturing cost for manufacturing the cap increases.

One aspect of the present invention has been made to solve the above problems, and one of the objects is to provide a cap having a structure that can reduce the number of parts.

In order to achieve the above object, a cap according to one aspect of the present invention includes a cap body that is attached to the mouth of a container body in which contents are stored, and is provided with a discharge hole for discharging the contents; a slit valve that releasably closes the discharge hole, the cap body and the slit valve are integrally molded, and the cap body includes a cylindrical peripheral wall extending in the vertical direction; The slit valve has an annular top wall that extends radially inward from the upper part of the peripheral wall, and the slit valve includes a cylindrical portion extending vertically within the discharge hole, and a cylindrical portion extending in the vertical direction within the discharge hole; and a valve portion extending radially inward from a position below the upper end surface of the cylindrical portion, and a gate mark of the slit valve is formed in the cylindrical portion.

According to the cap of one aspect of the present invention, the cap body and the slit valve are integrally molded. Therefore, there is no need to separately provide a member for fixing the slit valve to the cap body. Thereby, the number of parts of the cap can be reduced.

Furthermore, when integrally molding the cap body and the slit valve, a method has been adopted in which a gate for resin injection is arranged in the valve portion of the slit valve. However, when this molding method is employed, gate marks remain in a portion of the valve portion, which is thinner than the cylindrical portion, and there is a risk that the movement of the valve portion may become unstable. To solve this problem, in the cap of one embodiment of the present invention, the gate marks of the slit valve are formed in the cylindrical part, so that the wall thickness of the valve part can be made constant. As a result, according to the cap of one aspect of the present invention, the stability of the movement of the valve portion can be increased.

In the cap of one aspect of the present invention, a circumferential groove extending in the circumferential direction may be formed on the upper surface of the top wall of the cap body.

When integrally molding the cap body and the slit valve, for example, two-color molding or insert molding is used. At this time, for example, the cap main body is formed by primary molding, and the slit valve is formed integrally with the cap main body by secondary molding. In this case, if the primary molded resin constituting the cap body is not solidified during secondary molding, the secondary molded resin will flow into the cap body side, making it difficult to stably manufacture a desired cap. To solve this problem, according to the cap of one aspect of the present invention, the circumferential groove is formed on the upper surface of the top wall of the cap body, so that the top wall is thinned in the portion where the circumferential groove is formed. In other words, a hollow portion is formed on the upper surface side of the ceiling wall. This makes it easier for the primary molded resin to solidify in the thinned portion of the top wall, and it is possible to suppress the secondary molded resin from flowing into the cap body side. As a result, a desired cap can be stably manufactured.

In one aspect of the cap of the present invention, the slit valve further includes an annular seal portion that contacts the upper end of the mouth portion, and an outer circumferential surface of the annular seal portion and a lower surface of the top wall of the cap body. A gap may be formed between the cap body and the inner peripheral surface of the peripheral wall.

According to this configuration, since the annular seal portion can seal between the upper end of the mouth portion and the cap, leakage of the contents from between the container body and the cap can be suppressed. In addition, since a gap is formed between the outer circumferential surface of the annular seal portion and the inner circumferential surface of the circumferential wall of the cap body on the lower surface of the top wall of the cap body, compared to the case where no gap was formed in this part. Therefore, the ceiling wall will be made thinner. In other words, a hollow portion is formed on the lower surface side of the ceiling wall. This makes it easier for the primary molded resin to solidify in the portion where the void is formed, and it is possible to suppress the secondary molded resin from flowing into the cap body side. As a result, a desired cap can be stably manufactured.

In the cap according to one aspect of the present invention, an end portion of the valve portion may be connected to a position below an upper end surface of the cylindrical portion.

According to this configuration, the position of the gate mark formed on the upper end surface of the cylindrical part is farther from the valve part than in the case where the end of the valve part is connected to the upper end of the cylindrical part. The stability of the movement of the parts can be further improved.

According to one aspect of the present invention, it is possible to reduce the number of parts and provide a cap with excellent stability in the movement of the valve portion of the slit valve.

FIG. 2 is a diagram showing a cap according to an embodiment of the present invention, and is a longitudinal cross-sectional view of the cap in a closed state. FIG. 6 is a plan view of the cap in an open state, viewed from above. FIG. 3 is a longitudinal cross-sectional view taken along line III-III in FIG. 2;

Hereinafter, a cap according to an embodiment of the present invention will be described with reference to the drawings.
Note that the scope of the present invention is not limited to the following embodiments, and can be arbitrarily modified within the scope of the technical idea of the present invention.

As shown in FIG. 1, the cap 20 of this embodiment is provided in the discharge container 1. The discharge container 1 includes a bottomed cylindrical container body 10 in which contents are accommodated, and a cap 20 attached to the opening 11 of the container body 10.

In this embodiment, the central axes of the container body 10 and the cap 20 are arranged on a common axis. Hereinafter, this common axis will be referred to as a cap axis O, and the direction along the cap axis O will be referred to as an up-down direction. Further, the side on which the cap 20 is located with respect to the container body 10 is referred to as the upper side or upper side, and the opposite side is referred to as the lower side or lower side. Further, in a plan view seen from above, the direction intersecting the cap axis O is called the radial direction, and the direction going around the cap axis O is called the circumferential direction.

The container body 10 is, for example, a squeeze bottle, and at least the body of the container body 10 is capable of squeeze deformation (elastic deformation) in the radial direction. The contents accommodated in the container body 10 are, for example, liquids such as fragrances, fruit juices, and concentrated liquids, although they are not particularly limited.

The mouth portion 11 of the container body 10 has a cylindrical shape extending in the vertical direction and is open upward. In the state before use of the discharge container 1, the upper opening of the mouth portion 11 is closed by the sheet member 12. Thereby, in the state before use of the discharge container 1, the inside of the container main body 10 is sealed. The sheet member 12 is made of, for example, a seal made of aluminum, and is attached to the upper end of the mouth portion 11 . A male screw portion 11a is formed on the outer peripheral surface of the mouth portion 11.

The cap 20 includes a cylindrical cap body 30 that is attached to the mouth 11 of the container body 10, a lid body 40 that is connected to the cap body 30 via a hinge 60, and a cap body 30 that is connected to the cap body 30 via a hinge 60. A slit valve 50 provided at the slit valve 50 is provided.

The cap body 30 is provided with a discharge hole 33 through which the contents are discharged. The lid body 40 is rotatably provided around a hinge 60 and around an axis extending in a direction orthogonal to the up-down direction with respect to the cap body 30. FIG. 1 shows a state in which the lid body 40 is closed, a so-called closed lid state. In the closed state, the lid body 40 covers the discharge hole 33 from above and closes the upper end opening of the discharge hole 33. By rotating the lid 40 upward around the hinge 60 from the state shown in FIG. 1, the lid 40 can be opened as shown in FIG. In addition, in the following description of the relative positional relationship of each part, the closed state will be described unless otherwise specified.

The cap body 30 has a cylindrical peripheral wall 31 disposed coaxially with the cap axis O, and a top wall 32 that extends radially inward from the upper end of the peripheral wall 31.

A female screw portion 31b is formed on the inner peripheral surface of the peripheral wall 31 and engages with a male screw portion 11a formed on the outer peripheral surface of the mouth portion 11. Thereby, the cap body 30 is attached to the opening 11 of the container body 10 in a screwed state. The cap body 30 may be attached to the opening 11 of the container body 10 in an undercut-fitting manner, in addition to being screwed on as described above.

The top wall 32 has an annular shape disposed coaxially with the cap axis O. The top wall 32 is arranged above the mouth 11 of the container body 10. The top wall 32 includes an outer annular portion 32a that protrudes radially inward from the upper end of the peripheral wall 31, and an inner annular portion 32b that extends radially inward and obliquely upward from the radially inner end of the outer annular portion 32a. have.

The outer annular portion 32a has an annular shape disposed coaxially with the cap axis O. The upper surface of the outer annular portion 32a is located above the upper end of the peripheral wall 31. A circumferential groove 32m extending in the circumferential direction is formed on the upper surface of the outer annular portion 32a. In this embodiment, the circumferential groove 32m is formed in an annular shape coaxially with the cap axis O. As a result, the wall thickness of the outer annular portion 32a at the portion where the circumferential groove 32m is formed is thinner than when the circumferential groove 32m is not formed. In other words, a portion of the outer annular portion 32a is thinned by forming the hollowed out portion on the upper surface of the outer annular portion 32a. Note that the circumferential groove 32m does not necessarily have to be continuously formed in an annular shape, and may be formed in plurality, for example, in a form that is interrupted in the circumferential direction.

Further, an annular projection 32d that projects upward is formed on the radially outer peripheral edge of the upper surface of the outer annular portion 32a. An engagement protrusion 32t that protrudes radially outward is formed on the outer peripheral surface of the annular protrusion 32d.

The inner annular portion 32b has an annular shape disposed coaxially with the cap axis O. The inner annular portion 32b extends diagonally upward in the radial direction from the radially inner end of the outer annular portion 32a. The inner annular portion 32b has an annular inner peripheral surface 32g facing radially inward. The inner circumferential surface 32g is a tapered surface located radially inward from the bottom toward the top.

A convex portion 32h that projects downward is formed on the lower surface of the outer annular portion 32a. The convex portion 32h has, for example, an annular shape disposed coaxially with the cap axis O. Note that a plurality of convex portions 32h may be arranged, for example, at intervals along the circumferential direction.

The above-mentioned discharge hole 33 is provided in the ceiling wall 32. The inner side of the annular top wall 32 forms a discharge hole 33, and the discharge hole 33 passes through the top wall 32 in the vertical direction. In this embodiment, the inner circumferential edge of the discharge hole 33 is formed by the inner circumferential edge of the upper end of the inner annular portion 32b.

The lid body 40 includes a disk-shaped top wall 41 that covers the upper side of the cap body 30, a peripheral wall 42 that extends downward from the outer peripheral edge of the top wall 41, and a peripheral wall 42 that extends downward from the top wall 41 on the inside of the peripheral wall 42 in the radial direction. It has a closed cylinder part 43 and a knob part 44 that projects radially outward from the top wall 41.

The top wall 41 has a concave portion 41b recessed downward on the radially inner side of the closed cylinder portion 43. The upper and lower surfaces of the recess 41b are formed into curved shapes. The recessed portion 41b is in contact with a valve portion 51 of a slit valve 50, which will be described later. Note that the recess 41b may not be formed.

The peripheral wall 42 is arranged coaxially with the cap axis O and has a cylindrical shape that opens downward. The peripheral wall 42 is fitted onto the outer annular portion 32a of the cap body 30. The lower end portion of the peripheral wall 42 is disposed to face above the peripheral wall 31 of the cap body 30 with a slight gap therebetween. An engagement protrusion 42t that engages with the engagement protrusion 32t of the annular protrusion 32d from below is formed on the inner peripheral surface of the lower end of the peripheral wall 42. By mutually engaging the engagement protrusion 32t and the engagement protrusion 42t, unintentional opening of the lid body 40 in the closed state can be suppressed. A lower end portion of the peripheral wall 42 is connected to the peripheral wall 31 of the cap body 30 via a hinge 60.

The closed cylinder portion 43 is arranged coaxially with the cap axis O and has a cylindrical shape that opens downward. The lower end of the closed cylinder portion 43 is located above the lower end of the peripheral wall 42 . The closing cylinder part 43 is fitted onto the upper part of the cylinder part 52 of the slit valve 50, thereby closing the discharge hole 33. The knob 44 is disposed on the opposite side of the hinge 60 across the cap axis O in the radial direction.

In this embodiment, the cap body 30, the lid body 40, and the hinge 60 are integrally molded from the same material. The cap body 30, the lid body 40, and the hinge 60 are made of a hard resin material such as polypropylene.

The slit valve 50 is arranged radially inside the top wall 32 of the cap body, that is, inside the discharge hole 33. The slit valve 50 releasably closes the discharge hole 33 through the slit 51s. The material constituting the slit valve 50 is softer than the material constituting the cap body 30. The slit valve 50 is made of a soft resin material such as polyethylene or elastomer. This allows the slit valve 50 to be elastically deformed.

The slit valve 50 includes a cylindrical portion 52 that extends in the vertical direction within the discharge hole 33, a valve portion 51 that extends radially inward from the inner circumferential surface of the cylindrical portion 52, and radially outward from the outer circumferential surface of the cylindrical portion 52. It has an annular seal portion 53 that spreads out.

The cylindrical portion 52 is disposed coaxially with the cap axis O, and has a generally tapered cylindrical shape in which the inner diameter and outer diameter become smaller from the bottom toward the top. As a result, the inner circumferential surface of the cylindrical portion 52 forms an inclined surface 52a that is inclined with respect to the vertical direction. That is, the inclined surface 52a is a tapered surface located radially inward from the bottom toward the top. In this embodiment, substantially the entire inner circumferential surface of the cylindrical portion 52 is an inclined surface 52a.

A protrusion 52b that protrudes inward in the radial direction is formed at the center of the inner peripheral surface of the cylindrical portion 52 in the vertical direction. The protrusion 52b has an annular shape disposed coaxially with the cap axis O. The inner peripheral surface of the protrusion 52b is a cylindrical surface perpendicular to the radial direction. The lower surface of the protrusion 52b is an annular surface perpendicular to the vertical direction. The thickness of the portion of the cylindrical portion 52 located above the protrusion 52b is thinner than the thickness of the portion of the cylindrical portion 52 located below the protrusion 52b. Note that the thickness of the portion of the cylindrical portion 52 located above the protrusion 52b may be thicker than the thickness of the portion located below the protrusion 52b. It may be the same thickness as the part where it is located.

The outer circumferential surface of the portion of the cylindrical portion 52 below the protruding portion 52b is connected to the inner circumferential surface 32g of the inner annular portion 32b of the cap body 30. Thereby, the outer circumferential surface of the cylindrical portion 52 is connected to the inner circumferential edge of the discharge hole 33. A portion of the cylindrical portion 52 above the protruding portion 52b extends above the inner annular portion 32b of the cap body 30.

The valve portion 51 is formed to extend radially inward from a position below the upper end surface of the cylindrical portion on the inner circumferential surface of the cylindrical portion 52 . The valve portion 51 is a thin film-like portion that closes the upper opening of the cylindrical portion 52 . As shown in FIG. 2, the valve portion 51 has a circular shape disposed coaxially with the cap axis O in plan view. As shown in FIG. 1, the valve portion 51 is slightly curved in a downwardly convex direction. The valve portion 51 is arranged at approximately the same height as the lower end of the closing cylinder portion 43 of the lid body 40 in the vertical direction.

A slit 51s that vertically penetrates the valve part 51 is formed in the valve part 51, and by opening and closing the slit 51s, communication between the inside of the container body 10 and the outside of the discharge container 1 through the discharge hole 33 is established. and can be switched on and off. Thereby, the valve portion 51 of the slit valve 50 is able to open and close the discharge hole 33. As shown in FIG. 2, the shape of the slit 51s is, for example, a cross shape centered on the cap axis O in plan view. Note that the shape of the slit 51s is not particularly limited, and may be a radial shape extending in the radial direction from the cap axis O in a plan view, or a shape extending in a straight line in a plan view.

The annular seal portion 53 projects radially outward from the lower end of the cylindrical portion 52 . The annular seal portion 53 has an annular shape disposed coaxially with the cap axis O. The outer circumferential surface 53c of the annular seal portion 53 does not contact the inner circumferential surface 31c of the circumferential wall 31 of the cap body 30, and is spaced radially inward from the inner circumferential surface 31c of the circumferential wall 31. That is, on the lower surface of the top wall 32 of the cap body 30, a gap K is formed between the outer circumferential surface 53c of the annular seal portion 53 and the inner circumferential surface 31c of the peripheral wall 31.

In this embodiment, the gap K is formed in an annular shape coaxially with the cap axis O. As a result, the wall thickness of the top wall 32 (outer annular portion 32a) in the portion where the gap K is formed is different from the outer circumferential surface 53c of the annular seal portion 53 and the inner circumferential surface 31c of the circumferential wall 31 without the gap K being formed. It is thinner than when they are in contact with each other. In other words, a hollowed out portion is formed on the lower surface of the top wall 32 (outer annular portion 32a). Note that the voids K do not necessarily have to be formed continuously in an annular shape, and may be formed in plurality, for example, in a form interrupted in the circumferential direction.

Further, the upper surface of the annular seal portion 53 is connected to the lower surface of the outer annular portion 32a of the cap body 30. A convex portion 32h formed on the lower surface of the outer annular portion 32a is embedded in the annular seal portion 53.

A seal convex portion 54 is formed on the lower surface of the annular seal portion 53 so as to protrude downward and come into contact with the upper end portion of the mouth portion 11 . In this embodiment, the seal convex portion 54 has an annular shape disposed coaxially with the cap axis O. The radial position of the seal convex portion 54 is the same as the radial position of the convex portion 32h formed on the lower surface of the outer annular portion 32a. The annular seal portion 53 contacts the upper end portion of the mouth portion 11 of the container body 10 when the cap 20 is attached to the container body 10 . When the discharge container 1 is not in use, the annular seal portion 53 contacts the upper end portion of the mouth portion 11 via the sheet member 12. In a state where the annular seal portion 53 is in contact with the upper end portion of the mouth portion 11, the seal convex portion 54 is compressively elastically deformed in the vertical direction.

The cap body 30 and the slit valve 50 are integrally molded. The cap body 30 and the slit valve 50 are integrally molded by a molding method such as two-color molding or insert molding. Specifically, in this embodiment, a member in which the cap body 30 and the lid body 40 are connected via the hinge 60 is formed by primary molding. Thereafter, the slit valve 50 is integrally connected to the cap body 30 by secondary molding. Thus, in this embodiment, the entire cap 20 is integrally molded.

In this embodiment, a gate for resin injection is arranged on the upper end surface of the cylindrical portion 52 of the slit valve 50 during secondary molding. As a result, gate marks 56 are formed on the upper end surface of the cylindrical portion 52. As shown in FIG. 2, the gate mark 56 is arranged on the opposite side of the hinge 60 with respect to the cap axis O in plan view. Note that the position of the gate mark 56 does not necessarily have to be on the opposite side of the hinge 60 with respect to the cap axis O in a plan view, and may be located at any other position as long as it is on the upper end surface of the cylindrical portion 52. Further, in the present embodiment, the gate marks 56 are formed on the upper end surface of the cylindrical portion 52, but the gate marks 56 are not limited to the upper end surface. It may be formed at a position other than the above.

Further, during primary molding, a gate for resin injection is placed on the lower surface of the recess 41b of the top wall 41 of the lid 40. As a result, gate marks 46 are formed on the lower surface of the recess 41b of the top wall 41. As shown in FIG. 2, primary molding is performed with the lid 40 open, but the gate mark 46 is arranged on the opposite side of the hinge 60 with respect to the cap axis O in plan view. In this way, it is desirable that the gate position during primary molding and the gate position during secondary molding be set as far apart as possible. This facilitates integral molding.

Hereinafter, a method of using the discharge container 1 having the above structure will be explained.
When taking out the contents from the dispensing container 1, the user rotates the lid 40 around the hinge 60 to open it, and then, with the dispensing container 1 upside down, moves the body of the container body 10 inward in the radial direction. Press and squeeze to transform. This reduces the internal volume of the container body 10 and applies pressure to the contents. The slit 51s of the valve portion 51 opens upon receiving the pressure of the contents, and the contents are discharged from the slit 51s. In addition, when the sheet member 12 is provided at the mouth part 11 of the container main body 10, the user peels off the sheet member 12 before using the discharge container 1.

According to the cap 20 of this embodiment, the cap body 30 and the slit valve 50 are integrally molded. Therefore, there is no need to separately provide a member for fixing the slit valve 50 to the cap body 30. Thereby, the number of parts of the cap 20 can be reduced. As described above, according to the present embodiment, the number of parts of the cap 20 can be reduced, so the number of manufacturing steps and manufacturing cost of the cap 20 can be reduced.

Furthermore, in conventional caps, a gate for resin injection may be disposed in the valve portion of the slit valve during secondary molding when integrally molding the cap body and the slit valve. However, in this case, gate marks remain in a portion of the valve portion, which is thinner in wall thickness than the cylindrical portion of the slit valve, so that the movement of the valve portion may become unstable.

To solve this problem, according to the cap 20 of the present embodiment, the gate mark 56 of the slit valve 50 is formed on the upper end surface of the cylindrical part 52, so that the wall thickness of the valve part 51 can be made constant. . Thereby, the stability of the movement of the valve portion 51 can be improved. Particularly in the case of this embodiment, since the end of the valve portion 51 is connected to a position lower than the upper end on the inner peripheral surface of the cylindrical portion 52, the gate mark 56 formed on the upper end surface of the cylindrical portion 52 is located farther from the valve portion 51 than when the end of the valve portion 51 is connected to the upper end of the cylindrical portion 52. Thereby, the stability of the movement of the valve portion 51 can be further improved.

Furthermore, in conventional caps, if the primary molded resin constituting the cap body had not yet solidified during secondary molding, there was a risk that the secondary molded resin would flow into the cap body side. Specifically, if the primary molding resin has not solidified at the end of the slit valve on the downstream side in the flow direction of the secondary molding resin through the gate, the end of the slit valve will touch the top wall of the cap body. There was a problem in that the resin flowed in from the cap, making it difficult to stably manufacture the desired cap. In particular, in the cap 20 of this embodiment, since the gate during secondary molding is arranged in the cylindrical part 52, the flow of resin from the gate position of the cylindrical part 52 becomes faster, and the above problem becomes noticeable. There is a risk.

In contrast, in the cap 20 of the present embodiment, a circumferential groove 32m is formed on the upper surface of the outer annular portion 32a that constitutes the top wall 32 of the cap body 30, and an annular seal portion 53 is formed on the lower surface of the top wall 32. A gap K is formed between the outer peripheral surface 53c and the inner peripheral surface 31c of the peripheral wall 31. In this embodiment, the gap K is formed in an annular shape coaxially with the cap axis O. In this way, since the hollowed out portions are formed on both the upper and lower surfaces of the ceiling wall 32, the wall thickness of this portion is thinner than when the circumferential groove 32m and the gap K are not formed. There is. Therefore, the primary molded resin constituting the top wall 32 is likely to solidify, and even if the gate during secondary molding is arranged on the upper end surface of the cylindrical part 52 and the flow of resin becomes faster, the secondary molded resin This can prevent the liquid from flowing into the cap body 30 side. As a result, a desired cap can be stably manufactured.

Further, according to the present embodiment, the slit valve 50 has an annular seal portion 53 that contacts the upper end portion of the mouth portion 11 of the container body 10, and the slit valve 50 has a material that is softer than the material forming the cap body 30. made of material. Therefore, the annular seal portion 53 can be made relatively soft, and the annular seal portion 53 can be easily brought into close contact with the upper end portion of the mouth portion 11. Thereby, the annular seal portion 53 can suitably seal between the upper end portion of the mouth portion 11 and the cap 20, and leakage of contents from between the container body 10 and the cap 20 can be suppressed. .

Particularly, as in this embodiment, when the sheet member 12 is attached to the upper end of the mouth 11 of the container body 10 when not in use, when the sheet member 12 is peeled off, the sheet member 12 is not attached. The upper end of the opening 11 is likely to become dirty due to some remaining adhesive. Therefore, it tends to be difficult to seal between the upper end portion of the mouth portion 11 and the cap 20. However, by forming the annular seal part 53 from a relatively soft material, the annular seal part 53 can easily bite into the upper end of the dirty mouth part 11. Therefore, even if the upper end of the mouth portion 11 becomes dirty after peeling off the sheet member 12, the space between the container body 10 and the cap 20 can be suitably sealed.

As described above, according to the present embodiment, since the slit valve 50 can suitably seal between the container body 10 and the cap 20, it is not necessary to separately provide a sealing member for sealing between the container body 10 and the cap 20. do not have. Therefore, the number of parts of the cap 20 can be further reduced.

Further, according to the present embodiment, a seal convex portion 54 that contacts the upper end portion of the mouth portion 11 is formed on the lower surface of the annular seal portion 53 . Therefore, the seal convex portion 54 comes into contact with the upper end portion of the mouth portion 11 and is compressively and elastically deformed, so that the annular seal portion 53 can be more suitably brought into close contact with the upper end portion of the mouth portion 11 . Therefore, the sealing performance between the container body 10 and the cap 20 can be further improved.

Further, according to the present embodiment, the slit valve 50 has a cylindrical portion 52 that extends in the vertical direction within the discharge hole 33 and whose outer peripheral surface is connected to the inner peripheral edge of the discharge hole 33 . Therefore, when the discharge container 1 is turned upside down and the contents are discharged from the discharge hole 33 through the slit 51s, the contents flow into the inside of the cylindrical portion 52. According to this embodiment, the inner peripheral surface of the cylindrical portion 52 is provided with an inclined surface 52a that is inclined with respect to the vertical direction. Therefore, when the dispensing container 1 is returned to an upright state after being used, the contents remaining in the cylindrical portion 52 are easily guided into the container main body 10 along the inclined surface 52a. This makes it easy to recover the contents from inside the cylindrical portion 52 into the container body 10.

Note that the technical scope of the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the circumferential groove 32m is formed on the top surface of the top wall 32 of the cap body 30, and the gap K is formed on the bottom surface of the top wall 32, so that the top and bottom surfaces of the top wall 32 of the cap body 30 are formed. A hollowed out portion was formed on both sides. Instead of this configuration, this type of hollowed out portion may be formed only on either the upper surface or the lower surface of the top wall 32 of the cap main body 30. Moreover, if the flow of the secondary molded resin into the cap body side does not pose a particular problem, this type of hollowed out portion may not be formed.

Further, as long as the cap body 30 and the slit valve 50 are integrally molded, other parts of the cap 20 may be molded separately from the cap body 30 and the slit valve 50. For example, in the embodiment described above, the lid body 40 may be formed separately from the cap body 30 and the slit valve 50, and may be rotatably attached to the cap body 30. In this way, the lid body 40 may be detachably attached to the cap body 30.

Further, the seal convex portion 54 does not need to be annular, and may be configured such that a plurality of seal convex portions 54 are arranged at intervals in the circumferential direction. Alternatively, the seal convex portion 54 may not be formed on the lower surface of the annular seal portion 53. Further, the inclined surface 52a may not be provided on the inner circumferential surface of the cylindrical portion 52 of the slit valve 50.

Furthermore, a downwardly recessed portion may be formed in the valve portion 51 of the slit valve 50. Thereby, each portion of the valve portion, which is divided into four parts in the circumferential direction by the slit, can be easily elastically deformed in the vertical direction. Further, a cylindrical portion extending upward from the upper end of the inner annular portion 32b may be formed on the top wall 32 of the cap body 30, and this cylindrical portion and the closed cylinder portion 43 of the lid body 40 fit together. It may be.

In addition, the specific configurations such as the shape, arrangement, number, and constituent materials of each component constituting the cap 20 of the above embodiment are not limited to those of the above embodiment, and can be changed as appropriate.

10 Container main body 11 Mouth part 20 Cap 30 Cap main body 31 Peripheral wall 31c Inner peripheral surface (of the peripheral wall) 32 Top wall 32m Circumferential groove 33 Discharge hole 50 Slit valve 51 Valve part 52 Cylindrical part 53 Annular seal part 53c (of the annular seal part) ) Outer peripheral surface 56 Gate mark K Gap

Claims (3)

a cap body that is attached to the mouth of a container body in which contents are accommodated and is provided with a discharge hole for discharging the contents;
a slit valve that releasably closes the discharge hole;
Equipped with
The cap body and the slit valve are integrally molded,
The cap body has a cylindrical peripheral wall that extends in the vertical direction, and an annular top wall that extends radially inward from the top of the peripheral wall,
The slit valve has a cylindrical part that extends in the vertical direction within the discharge hole, and a valve part that extends radially inward from the inner peripheral surface of the cylindrical part,
Gate marks of the slit valve are formed in the cylindrical part ,
The slit valve further includes an annular seal portion that contacts the upper end of the mouth portion,
The cap, wherein a gap is formed on a lower surface of the top wall of the cap body between an outer circumferential surface of the annular seal portion and an inner circumferential surface of the circumferential wall of the cap body . The cap according to claim 1, wherein a circumferential groove extending in the circumferential direction is formed on the upper surface of the top wall of the cap body. The cap according to claim 1 or 2 , wherein the valve portion has an end connected to a position below an upper end surface of the cylindrical portion.

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