JP2022025934A - cap - Google Patents

Abstract

To provide a cap having a structure capable of reducing the number of components.SOLUTION: A cap 20 according to the preset invention comprises a cap body 30 attached to a mouth part 11 of a container body 10 where a content is stored and including a discharge hole 33 for discharging the content; and a slit valve 50 for closing the discharge hole 33 in an openable manner. The cap body 30 and the slit valve 50 are integrally molded. The cap body 30 comprises a cylindrical peripheral wall 31 extending in an upward/downward direction, and an annular top wall 32 spreading inward in a radial direction from above the peripheral wall 31. The slit valve 50 comprises a cylindrical part 52 extending in an upward/downward direction inside the discharge hole 33, and a valve part 51 spreading inward in a radial direction from a lower position than an upper end surface of the cylindrical part 52 on an inner peripheral surface of the cylindrical part 52. A gate mark 56 of the slit valve 50 is formed at the cylindrical part 52.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cap.

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

Japanese Unexamined Patent Publication No. 2002-347913

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

One aspect of the present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide a cap having a structure capable of reducing the number of parts.

In order to achieve the above object, the cap of one aspect of the present invention is attached to the mouth of the container body in which the contents are housed, and is provided with a discharge hole for discharging the contents. The cap body and the slit valve are integrally molded with a slit valve that closes the discharge hole so as to be openable, and the cap body has a tubular peripheral wall extending in the vertical direction and the slit valve. The slit valve has an annular top wall extending radially inward from the upper part of the peripheral wall, and the slit valve has a tubular portion extending in the vertical direction in the discharge hole and the tubular portion on the inner peripheral surface of the tubular portion. It has a valve portion extending radially inward from a position below the upper end surface of the tubular portion, and a gate mark of the slit valve is formed in the tubular portion.

According to the cap of one aspect of the present invention, the cap body and the slit valve are integrally molded. Therefore, it is not necessary to separately provide a member for fixing the slit valve to the cap body. As a result, the number of parts of the cap can be reduced.

Further, when integrally molding the cap body and the slit valve, a method of arranging a gate for resin injection in the valve portion of the slit valve may be adopted. However, when this molding method is adopted, a gate mark remains in a part of the valve portion having a wall thickness thinner than that of the tubular portion, and there is a possibility that the movement of the valve portion becomes unstable. In response to this problem, in the cap of one aspect of the present invention, since the gate mark of the slit valve is formed in the tubular portion, the wall thickness of the valve portion 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 enhanced.

In the cap of one aspect of the present invention, a peripheral 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 body is molded by primary molding, and the slit valve is integrally connected to the cap body by secondary molding. In this case, if the primary molding resin constituting the cap body is not solidified at the time of secondary molding, the secondary molding resin flows into the cap body side, and it is difficult to stably manufacture a desired cap. To solve this problem, according to the cap of one aspect of the present invention, since the peripheral groove is formed on the upper surface of the top wall of the cap body, the top wall of the portion where the peripheral groove is formed is thinned. That is, a lightening portion is formed on the upper surface side of the top wall. As a result, the resin of the primary molding is easily solidified at the portion where the top wall is thinned, and the flow of the resin of the secondary molding to the cap main body side can be suppressed. As a result, a desired cap can be stably manufactured.

In the cap of one aspect of the present invention, the slit valve further has an annular seal portion that contacts the upper end of the mouth portion, and on the lower surface of the top wall of the cap body, with the outer peripheral surface of the annular seal portion. 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. Further, since a gap is formed between the outer peripheral surface of the annular seal portion and the inner peripheral surface of the peripheral wall of the cap body on the lower surface of the top wall of the cap body, a gap is formed in this portion as compared with the case where the gap is not formed. The top wall will be thinned. That is, a lightening portion is formed on the lower surface side of the top wall. As a result, the resin of the primary molding is easily solidified at the portion where the void is formed, and the flow of the resin of the secondary molding to the cap main body side can be suppressed. As a result, a desired cap can be stably manufactured.

In the cap of one aspect of the present invention, the valve portion may be connected at an end portion below the upper end surface of the tubular portion.

According to this configuration, the position of the gate mark formed on the upper end surface of the tubular portion is farther from the valve portion than when the end portion of the valve portion is connected to the upper end portion of the tubular portion. The stability of the movement of the part 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 having excellent stability of movement of the valve portion of the slit valve.

It is a figure which shows the cap of one Embodiment of this invention, and is the vertical sectional view of the cap in a closed state. It is a plan view of the cap in the opened state as seen from the upper surface. It is a vertical sectional view along the line III-III of FIG.

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

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

In the present embodiment, the central axes of the container body 10 and the cap 20 are arranged on a common axis. Hereinafter, this common axis is referred to as a cap axis O, and the direction along the cap axis O is referred to as a vertical direction. Further, the side on which the cap 20 is located with respect to the container body 10 is referred to as an upper side or an upper side, and the opposite side is referred to as a lower side or a lower side. Further, in a plan view seen from above, the direction that intersects the cap axis O is referred to as a radial direction, and the direction that orbits around the cap axis O is referred to as a circumferential direction.

The container body 10 is, for example, a squeeze bottle, and at least the body of the container body 10 can be squeeze-deformed (elastically deformed) in the radial direction. The content contained in the container body 10 is not particularly limited, but is, for example, a liquid such as a fragrance, fruit juice, or a concentrated liquid.

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 opening above the mouth portion 11 is closed by the sheet member 12. As a result, the inside of the container body 10 is sealed in the state before use of the discharge container 1. The sheet member 12 is made of, for example, an aluminum seal and is attached to the upper end portion 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 ridged tubular cap body 30 attached to the mouth portion 11 of the container body 10, a ridged tubular lid 40 connected to the cap body 30 via a hinge 60, and a cap body 30. The slit valve 50 provided in the above is provided.

The cap body 30 is provided with a discharge hole 33 for discharging the contents. The lid 40 is rotatably provided around an axis extending in a direction orthogonal to the vertical direction with respect to the cap body 30 with the hinge 60 as the center. FIG. 1 shows a state in which the lid 40 is closed, that is, a so-called closed state. The lid 40 covers the discharge hole 33 from above in a closed state, and closes the upper end opening of the discharge hole 33. As shown in FIG. 3, the lid 40 can be opened by rotating the lid 40 upward from the state shown in FIG. 1 around the hinge 60. In the following description of the relative positional relationship of each part, the closed state will be described unless otherwise specified.

The cap main body 30 has a cylindrical peripheral wall 31 arranged coaxially with the cap shaft O, and a top wall 32 extending radially inward from the upper end portion of the peripheral wall 31.

On the inner peripheral surface of the peripheral wall 31, a female screw portion 31b that meshes with the male screw portion 11a formed on the outer peripheral surface of the mouth portion 11 is formed. As a result, the cap body 30 is attached in a state of being screwed to the mouth portion 11 of the container body 10. In addition to the above screwing, the cap body 30 may be mounted in a state of being undercut fitted to the mouth portion 11 of the container body 10.

The top wall 32 has an annular shape arranged coaxially with the cap shaft O. The top wall 32 is arranged above the mouth portion 11 of the container body 10. The top wall 32 includes an outer annulus portion 32a projecting radially inward from the upper end portion of the peripheral wall 31, and an inner annulus portion 32b extending radially inward and diagonally upward from the radial inner end portion of the outer annulus portion 32a. have.

The outer annular portion 32a has an annular shape arranged coaxially with the cap shaft O. The upper surface of the outer annulus portion 32a is located above the upper end portion of the peripheral wall 31. A peripheral groove 32m extending in the circumferential direction is formed on the upper surface of the outer annulus portion 32a. In the present embodiment, the peripheral groove 32m is formed in an annular shape coaxially with the cap shaft O. As a result, the wall thickness of the outer annulus portion 32a of the portion where the peripheral groove 32m is formed is thinner than that when the peripheral groove 32m is not formed. In other words, a part of the outer annulus portion 32a is thinned due to the formation of the lightening portion on the upper surface of the outer annulus portion 32a. It should be noted that the peripheral groove 32m does not necessarily have to be continuously formed in an annular shape, and for example, a plurality of peripheral grooves may be formed in a form interrupted in the circumferential direction.

Further, an annular projection 32d projecting upward is formed on the radial outer peripheral edge portion on the upper surface of the outer annular portion 32a. On the outer peripheral surface of the annular protrusion 32d, an engagement protrusion 32t that protrudes outward in the radial direction is formed.

The inner annular portion 32b has an annular shape arranged coaxially with the cap shaft O. The inner annulus portion 32b extends diagonally upward from the radial inner end portion of the outer annulus portion 32a. The inner annular portion 32b has an annular inner peripheral surface 32g facing inward in the radial direction. The inner peripheral surface 32g is a tapered surface located inward in the radial direction from the lower side to the upper side.

A convex portion 32h projecting downward is formed on the lower surface of the outer annulus portion 32a. The convex portion 32h has, for example, an annular shape arranged coaxially with the cap shaft O. In addition, a plurality of convex portions 32h may be arranged at intervals along the circumferential direction, for example.

The discharge hole 33 described above is provided on the top wall 32. The inside of the annular top wall 32 forms a discharge hole 33, and the discharge hole 33 penetrates the top wall 32 in the vertical direction. In the present embodiment, the inner peripheral edge portion of the discharge hole 33 is composed of the inner peripheral edge portion of the upper end of the inner annular portion 32b.

The lid 40 has a disk-shaped top wall 41 that covers the upper part 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 radial inside of the peripheral wall 42. It has a closed cylinder portion 43 and a knob portion 44 that protrudes radially outward from the top wall 41.

The top wall 41 is formed with a recess 41b that is recessed downward on the radial inside of the closing cylinder portion 43. The upper surface and the lower surface of the recess 41b are formed in a curved shape. The recess 41b is in contact with the valve portion 51 of the slit valve 50, which will be described later. The recess 41b may not be formed.

The peripheral wall 42 is arranged coaxially with the cap shaft O and has a cylindrical shape that opens downward. The peripheral wall 42 is externally fitted to the outer annulus portion 32a of the cap body 30. The lower end of the peripheral wall 42 is arranged above the peripheral wall 31 of the cap body 30 so as to face each other with a slight gap. On the inner peripheral surface at the lower end of the peripheral wall 42, an engaging projection 42t that engages with the engaging projection 32t of the annular projection 32d from below is formed. By engaging the engaging protrusion 32t and the engaging protrusion 42t with each other, it is possible to prevent the lid 40 in the closed state from unintentionally opening. The lower end of the peripheral wall 42 is connected to the peripheral wall 31 of the cap body 30 via a hinge 60.

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

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

The slit valve 50 is arranged inside the top wall 32 of the cap body in the radial direction, that is, in the discharge hole 33. The slit valve 50 closes the discharge hole 33 so as to be openable through the slit 51s. The material constituting the slit valve 50 is a softer material than the material constituting the cap body 30. The slit valve 50 is made of a soft resin material such as polyethylene or elastomer. As a result, the slit valve 50 can be elastically deformed.

The slit valve 50 has a tubular portion 52 extending in the vertical direction in the discharge hole 33, a valve portion 51 extending radially inward from the inner peripheral surface of the tubular portion 52, and a radial outer side from the outer peripheral surface of the tubular portion 52. It has an annular seal portion 53 that extends to the surface.

The tubular portion 52 has a substantially tapered tubular shape, which is arranged coaxially with the cap shaft O and whose inner diameter and outer diameter decrease from the lower side to the upper side. As a result, the inner peripheral surface of the tubular portion 52 is an inclined surface 52a that is inclined in the vertical direction. That is, the inclined surface 52a is a tapered surface located inward in the radial direction from the lower side to the upper side. In the present embodiment, substantially the entire inner peripheral surface of the tubular portion 52 is an inclined surface 52a.

A protruding portion 52b protruding inward in the radial direction is formed at the central portion in the vertical direction on the inner peripheral surface of the tubular portion 52. The protrusion 52b has an annular shape arranged coaxially with the cap shaft O. The inner peripheral surface of the protrusion 52b is a cylindrical surface orthogonal to the radial direction. The lower surface of the protrusion 52b is an annular surface orthogonal to the vertical direction. The thickness of the portion of the tubular portion 52 located above the protruding portion 52b is thinner than the thickness of the portion of the tubular portion 52 located below the protruding portion 52b. The thickness of the portion of the tubular portion 52 located above the protruding portion 52b may be thicker than the thickness of the portion located below the protruding portion 52b, or may be lower than the protruding portion 52b. It may be the same as the thickness of the located portion.

The outer peripheral surface of the portion below the protruding portion 52b of the tubular portion 52 is connected to the inner peripheral surface 32g of the inner annular portion 32b in the cap body 30. As a result, the outer peripheral surface of the tubular portion 52 is connected to the inner peripheral edge portion of the discharge hole 33. The portion of the tubular portion 52 above the protruding portion 52b extends upward from the inner annular portion 32b of the cap body 30.

The valve portion 51 is formed so as to extend radially inward from a position below the upper end surface of the tubular portion on the inner peripheral surface of the tubular portion 52. The valve portion 51 is a thin film-shaped portion that closes the opening above the tubular portion 52. As shown in FIG. 2, the valve portion 51 has a circular shape arranged coaxially with the cap shaft O in a 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 substantially the same height as the lower end of the closing cylinder portion 43 of the lid 40 in the vertical direction.

The valve portion 51 is formed with a slit 51s that penetrates the valve portion 51 in the vertical direction, and the inside of the container body 10 and the outside of the discharge container 1 communicate with each other through the discharge hole 33 by opening and closing the slit 51s. And can be switched off. As a result, the valve portion 51 of the slit valve 50 is closed so that the discharge hole 33 can be opened. As shown in FIG. 2, the shape of the slit 51s is, for example, a cross shape centered on the cap axis O in a plan view. 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 linear shape extending in a straight line in a plan view.

The annular seal portion 53 projects radially outward from the lower end portion of the tubular portion 52. The annular seal portion 53 has an annular shape arranged coaxially with the cap shaft O. The outer peripheral surface 53c of the annular seal portion 53 does not abut on the inner peripheral surface 31c of the peripheral wall 31 of the cap body 30, and is arranged at a position radially inward from the inner peripheral surface 31c of the peripheral 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 peripheral surface 53c of the annular seal portion 53 and the inner peripheral surface 31c of the peripheral wall 31.

In the present embodiment, the gap K is formed in an annular shape coaxially with the cap shaft O. As a result, the wall thickness of the top wall 32 (outer ring portion 32a) of the portion where the gap K is formed becomes the outer peripheral surface 53c of the annular seal portion 53 and the inner peripheral surface 31c of the peripheral wall 31 without forming the gap K. Is thinner than when it is in contact. In other words, a lightening portion is formed on the lower surface of the top wall 32 (outer ring portion 32a). It should be noted that the voids K do not necessarily have to be continuously formed in an annular shape, and may be formed in a plurality of gaps, 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.

On the lower surface of the annular seal portion 53, a seal convex portion 54 that projects downward and comes into contact with the upper end portion of the mouth portion 11 is formed. In the present embodiment, the seal convex portion 54 has an annular shape arranged coaxially with the cap shaft 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 comes into contact with the upper end portion of the mouth portion 11 of the container body 10 in a state where the cap 20 is attached to the container body 10. When the discharge container 1 is not in use, the annular seal portion 53 comes into contact with 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 in a state of being 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 the present embodiment, the member in which the cap body 30 and the lid 40 are connected via the hinge 60 is formed by the primary molding. Then, by secondary molding, the slit valve 50 is molded in a state of being integrally connected to the cap body 30. As described above, in the present embodiment, the entire cap 20 is integrally molded.

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

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

Hereinafter, a method of using the discharge container 1 having the above configuration will be described.
When taking out the contents from the discharge container 1, the user rotates the lid 40 around the hinge 60 to open the lid 40, and then inverts the discharge container 1 and inward the body of the container body 10 in the radial direction. Press to deform the squeeze. As a result, the internal volume of the container body 10 is reduced and pressure is applied to the contents. Upon receiving the pressure of the contents, the slit 51s of the valve portion 51 opens, and the contents are discharged from the slit 51s. When the sheet member 12 is provided at the mouth portion 11 of the container body 10, the user peels off the sheet member 12 before using the discharge container 1.

According to the cap 20 of the present embodiment, the cap body 30 and the slit valve 50 are integrally molded. Therefore, it is not necessary to separately provide a member for fixing the slit valve 50 to the cap body 30. As a result, 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 that the man-hours for manufacturing the cap 20 and the manufacturing cost can be reduced.

Further, in the conventional cap, a gate for resin injection may be arranged at the valve portion of the slit valve at the time of secondary molding when the cap body and the slit valve are integrally molded. However, in this case, since the gate mark remains in a part of the valve portion having a wall thickness thinner than that of the tubular portion of the slit valve, the movement of the valve portion may become unstable.

To solve this problem, according to the cap 20 of the present embodiment, since the gate mark 56 of the slit valve 50 is formed on the upper end surface of the tubular portion 52, the wall thickness of the valve portion 51 can be made constant. .. This makes it possible to improve the stability of the movement of the valve portion 51. In particular, in the case of the present embodiment, since the end portion of the valve portion 51 is connected to a position lower than the upper end portion on the inner peripheral surface of the tubular portion 52, the gate mark 56 formed on the upper end surface of the tubular portion 52. The position of is farther from the valve portion 51 than when the end portion of the valve portion 51 is connected to the upper end of the tubular portion 52. Thereby, the stability of the movement of the valve portion 51 can be further improved.

Further, in the conventional cap, if the primary molding resin constituting the cap body is not yet solidified at the time of secondary molding, the secondary molding resin may flow into the cap body side. Specifically, assuming that 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 is formed on the top wall of the cap body. There is a problem that it is difficult to stably manufacture a desired cap due to the inflow of resin from the resin. In particular, in the cap 20 of the present embodiment, since the gate at the time of secondary molding is arranged in the tubular portion 52, the resin flows faster from the gate position of the tubular portion 52, and the above problem becomes remarkable. There is a risk.

On the other hand, in the cap 20 of the present embodiment, a peripheral groove 32m is formed on the upper surface of the outer annular portion 32a constituting the top wall 32 of the cap body 30, and further, the 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 of the above and the inner peripheral surface 31c of the peripheral wall 31. In the present embodiment, the gap K is formed in an annular shape coaxially with the cap shaft O. As described above, since the lightening portion is formed on both the upper surface and the lower surface of the top wall 32, the wall thickness of this portion becomes thinner than that in the case where the peripheral groove 32 m and the gap K are not formed. There is. Therefore, the primary molding resin constituting the top wall 32 is easily solidified, and the gate at the time of secondary molding is arranged on the upper end surface of the tubular portion 52, and even if the resin flow is fast, the secondary molding resin is formed. Can be suppressed 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 is softer than the material forming the cap body 30. It is made of material. Therefore, the annular seal portion 53 can be made relatively soft, and the annular seal portion 53 can be suitably 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 the leakage of the contents from between the container body 10 and the cap 20 can be suppressed. ..

In particular, when the sheet member 12 is attached to the upper end of the mouth portion 11 of the container body 10 when not in use as in the present embodiment, when the sheet member 12 is peeled off, the sheet member 12 is attached. The upper end portion of the mouth portion 11 is liable to become dirty due to the remaining part of the 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 portion 53 with a relatively soft material, the annular seal portion 53 can be easily bitten into the upper end portion of the dirty mouth portion 11. Therefore, even when the sheet member 12 is peeled off and the upper end portion of the mouth portion 11 becomes dirty, 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 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 compressed and elastically deformed, so that the annular seal portion 53 can be more preferably brought into close contact with the upper end portion of the mouth portion 11. Therefore, the sealing property 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 tubular portion 52 extending in the vertical direction in the discharge hole 33 and having an outer peripheral surface connected to an inner peripheral edge portion of the discharge hole 33. Therefore, when the discharge container 1 is inverted and the contents are discharged from the discharge hole 33 through the slit 51s, the contents flow into the inside of the tubular portion 52. Here, according to the present embodiment, the inner peripheral surface of the tubular portion 52 is provided with an inclined surface 52a that is inclined in the vertical direction. Therefore, after using the discharge container 1, when the discharge container 1 is returned to the upright state, the contents remaining in the tubular portion 52 can be easily guided into the container main body 10 along the inclined surface 52a. This makes it easy to collect the contents from the inside of the tubular portion 52 into the container main body 10.

The technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the peripheral groove 32m is formed on the upper surface of the top wall 32 of the cap body 30, and the gap K is formed on the lower surface of the top wall 32, so that the upper surface and the lower surface of the top wall 32 of the cap body 30 are formed. A lightening portion was formed on both sides. Instead of this configuration, this kind of lightening portion may be formed only on either the upper surface or the lower surface of the top wall 32 of the cap body 30. Further, if the flow of the secondary molded resin into the cap body side is not particularly problematic, this kind of lightening portion may not be formed.

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

Further, the seal convex portions 54 do not have to be annular, and may have a configuration in which a plurality of the 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 peripheral surface of the tubular portion 52 of the slit valve 50.

Further, the valve portion 51 of the slit valve 50 may be formed with a recess that is recessed downward. As a result, each portion of the valve portion divided into four in the circumferential direction by the slit can be easily elastically deformed in the vertical direction. Further, the top wall 32 of the cap body 30 may be formed with a cylindrical portion extending upward from the upper end of the inner annular portion 32b, and the cylindrical portion and the closing cylinder portion 43 of the lid 40 are fitted to each other. May be.

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

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

Claims (4)

A cap body that is attached to the mouth of the container body that houses the contents and is provided with a discharge hole for discharging the contents.
A slit valve that closes the discharge hole so that it can be opened,
Equipped with
The cap body and the slit valve are integrally molded.
The cap body has a cylindrical peripheral wall extending in the vertical direction and an annular top wall extending radially inward from the upper portion of the peripheral wall.
The slit valve has a tubular portion extending in the vertical direction in the discharge hole and a valve portion extending radially inward from the inner peripheral surface of the tubular portion.
A cap in which the gate mark of the slit valve is formed in the cylindrical portion. 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 slit valve further has an annular seal that contacts the upper end of the mouth.
The first or second aspect of the present invention, wherein a gap is formed between the outer peripheral surface of the annular seal portion and the inner peripheral surface of the peripheral wall of the cap body on the lower surface of the top wall of the cap body. cap. The cap according to any one of claims 1 to 3, wherein the valve portion is connected at a position lower than the upper end surface of the tubular portion.

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