JP7422356B2 - cap - Google Patents

Description

The present invention relates to a cap that is attached to the mouth of a container.

BACKGROUND ART Conventionally, as a cap that is attached to the mouth of a container, a cap is known that includes a cap body that is attached to the mouth of the container, and a lid body that is connected to the cap body via a hinge. Among such caps, for example, Patent Document 1 discloses a cap that prevents the contents dripping and adhering to the cylindrical upper end surface of the cap body from scattering when a lid body is placed on the cap body. . This cap has a storage groove formed on the top surface of the cap body to accommodate the contents dripping from the discharge port, and by storing the contents in the storage groove, the contents can be stored when the lid body is placed on the cap body. It is constructed to prevent the scattering of.

Patent No. 3796668

However, in the invention described in Patent Document 1, when the lid body is placed on the cap body with the contents filling the storage groove, there is a risk that the contents accumulated in the storage groove may scatter.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a cap that can prevent the contents remaining on the periphery of the cap body from scattering when the lid is closed.

As a means for solving the above-mentioned problems, the present invention as set forth in claim 1 includes: a cap body attached to a container mouth; and a lid body hingedly connected to the cap body via a hinge. The cap body includes: a body portion that fits into the outer wall surface of the container mouth portion; a cylindrical main fitting wall portion that fits into the inner wall surface of the container mouth portion; a cylindrical guide portion having a discharge passage communicating with a container mouth portion, and the lid body is configured to abut against a cap body between the body portion and the cylindrical main fitting wall portion when being crowned. , a cylindrical descent regulating portion is provided vertically from the lower wall surface of the top surface portion of the lid body, and an outer peripheral upper edge portion of the body portion of the cap body excluding the joint portion with the hinge is connected to the body portion. The lid body is characterized in that it has a non-contact lower surface that does not come into contact with the inclined surface when the lid is crowned.

In the invention described in claim 1, the lower surface of the lid has a non-contact lower surface that does not contact the inclined surface when the lid is crowned, so that when the lid is crowned on the cap body, the cylindrical descent regulating portion It comes into contact with the cap body to stop the lid from descending, and the lower surface (non-contact lower surface) of the lid does not come into contact with the upper end surface of the cap body. This makes it difficult for the contents to scatter even if the contents are attached to the periphery of the cap body. In addition, by forming an inclined surface on the upper edge of the outer periphery of the body that slopes downward toward the outside in the radial direction of the body, even if the contents adhere to the upper end surface of the body, the contents will not be removed. Since the lid drips down along the slope, it is possible to suppress scattering that occurs when the lid body is placed on the cap body.
Furthermore, the lid body is provided with a cylindrical descent regulating portion that hangs down from the lower wall surface of the top surface portion of the lid body so as to abut the cap body between the body portion and the cylindrical main fitting wall portion. When the lid body is placed on the cap body, the tip of the cylindrical lowering regulating portion contacts the top surface of the cap body, so that the distance between the circumferential edges of the cap body and the lid body can be maintained, and the lid It is possible to regulate the closed position of the body and prevent the lid from buckling during capping or distribution.

In the invention described in claim 2, in the invention described in claim 1, when the lid body is placed on the cap body, a gap is formed between the non-contact lower surface and the sloped surface, and The size of the gap is 0.3 mm or more and 1.0 mm or less.

In the cap according to this item, when the lid body is placed on the cap body, a gap is formed between the non-contact lower surface and the inclined surface, so that the non-contact lower surface does not come into contact with the upper end surface of the cap body. Thereby, even if the contents are attached to the upper end surface of the cap body, the contents can be prevented from scattering.

In the invention described in claim 3, in the invention described in claim 1 or 2, the forming range of the inclined surface is formed in a range of a central angle of 250° or more about the central axis of the cap main body, and The non-contact lower surface is formed in a range having a central angle of 250° or more about the central axis of the lid.

In the cap according to this item, the slope is formed in a range with a center angle of 250° or more centered on the central axis of the cap body, so that the contents can be dripped over a wider range. The amount of content remaining on the upper end surface of the main body can be further reduced. Furthermore, by forming the non-contact lower surface in a range with a central angle of 250° or more around the central axis of the lid, when the lid is placed on the cap body, the lid 5 Since the lower surface of the body does not come into contact with the upper surface of the annular horizontal wall, scattering of the contents can be more reliably prevented.

According to the cap of the present invention, it is possible to provide a cap that can prevent contents remaining on the periphery of the cap body from scattering when the lid body is closed.

FIG. 2 is a schematic front view of a container with a cap attached to the container opening according to the first embodiment of the present invention. FIG. 2 is a schematic side view of the cap and container shown in FIG. 1, in which (a) is a diagram with the lid of the cap in a closed state, and (b) is a diagram with the lid of the cap in an open state. 2 is a cross-sectional view taken along line AA shown in FIG. 1. FIG. 4 is a partially enlarged view of portion C shown in FIG. 3. FIG. The main cap body and lid body of the cap body shown in FIG. 3 are shown, (a) being a plan view and (b) being a bottom view. The inner stopper of the cap body shown in FIG. 3 is shown, with (a) being a plan view and (b) being a bottom view. The check valve of the cap body shown in FIG. 3 is shown, with (a) being a plan view and (b) being a bottom view. FIG. 7 is a schematic cross-sectional view of a container with a cap attached to the opening of the container according to a second embodiment of the present invention.

Hereinafter, the structure of the cap according to the first embodiment of the present invention will be explained in detail based on FIGS. 1 to 7.
The cap 1A according to the first embodiment of the present invention has a check valve inside, and is attached to the container opening 3 of the container 2 by plugging. The cap 1A is generally composed of a cap body 4 having a discharge hole 25 for the contents, and a lid body 5 connected to the cap body 4 via a hinge 6.

First, the container 2 covered with the cap 1A will be explained with reference to FIGS. 1 to 3.
The container 2 has, for example, a body portion 7 that is easily deformed and restored, and the inside thereof is filled with liquid contents. Examples of the contents include liquid contents that tend to drip, such as soy sauce, ponzu sauce, sauce, and olive oil. The container 2 is of a type in which the contents are discharged by applying internal pressure, such as by squeezing the body 7. The container opening 3 is formed into a substantially cylindrical shape. Note that the container 2 includes a double container (including a so-called peelable container) consisting of an outer container and an inner container. The inner container has the flexibility to shrink and deform as the content decreases as the content is filled inside the inner container. In order to maintain the reduced volume shape of the inner container, outside air is drawn between the outer container and the inner container.

As shown in FIG. 3, the container 2 includes a body 7 and a container mouth 3 formed continuously from the body 7. The container opening 3 is formed into a narrow cylindrical shape as a whole, and is formed continuously from the bottomed cylindrical body 7. The container opening 3 is configured with a plurality of openings (steps) having different outer diameters that are continuous along the axial direction. Specifically, the container mouth 3 includes a large-diameter mouth 60 arranged at the upper end and extending in the axial direction, and a large-diameter mouth 60 arranged below the large-diameter mouth 60, whose outer diameter is smaller than the large-diameter mouth 60 and which extends in the axial direction. It has a small diameter opening 61 that extends in the direction, and a maximum diameter opening 62 that is disposed below the small diameter opening 61, has a larger outer diameter than the large diameter opening 60, and extends in the axial direction. Further, the large-diameter opening 60 and the small-diameter opening 61 located at the upper end are connected by a reduced-diameter opening 63 that continues from the large-diameter opening 60 and gradually decreases in diameter downward. The small diameter opening 61 and the largest diameter opening 62 are connected by an enlarged diameter opening 64 that continues from the small diameter opening 61 and gradually expands in diameter downward. A support opening 65 that extends in the axial direction and has a smaller diameter than the maximum diameter opening 62 and a larger diameter than the large diameter opening 60 is continuously formed below the maximum diameter opening 62 . A concave opening 66 having approximately the same diameter as the small diameter opening 61 is formed between the support opening 65 and the body 7 . In addition, when plugging the cap 1A into the container mouth 3, the outer peripheral portion of the concave mouth 66 is gripped by a cappering machine (not shown).

Next, the structure of the cap 1A will be explained with reference to FIGS. 3 to 7.
The cap 1A consists of a cap body 4 and a lid body 5. Immediately after squeezing the body 7 of the container 2 to apply internal pressure to the container 2 in the open state, and discharging an appropriate amount of contents (the internal pressure is When the cap 1A is released), the inside of the container 2 is sealed by the check valve 12 without the user manually operating the cap 1A.

Referring to FIG. 3, the cap body 4 is generally arranged above a cylindrical main cap body 11 that is plugged into the container mouth 3 and an annular wall 10 (see below) of the main cap body 11. , the check valve 12 whose valve portion 36 separates from or seats on the annular valve seat 26 around the discharge hole 25 to open and close the discharge hole 25, and the cylindrical main fitting wall portion 19 of the main cap body 11 (see below). The inner plug 13 is fitted with the upper part, is disposed above the check valve 12, communicates with the discharge hole 25, and has a discharge passage 41 for discharging the contents from the discharge hole 25.

The main cap body 11 is molded from synthetic resin such as polypropylene, and includes a body 18 , a cylindrical main fitting wall 19 arranged concentrically inside the body 18 , and a cylindrical main fitting wall 19 . An annular wall portion 10 that integrally extends obliquely upward toward the radial center from the inner wall surface of the body and has a discharge hole 25 in the radial center portion, the upper end of the body portion 18 and the upper end of the cylindrical main fitting wall portion 19. and a cylindrical sub-fitting concentrically extending between the body 18 and the cylindrical main fitting wall 19 on the lower surface of the annular horizontal wall 20. It is composed of a joint wall 32. The outer circumferential surface of the cylindrical main fitting wall 19 and the inner circumferential surface of the small diameter opening 61 of the container mouth 3 abut to maintain a seal. The body 18 has a side opposite to the joint with the hinge 6 so that the user's fingers can easily hook onto the grip 54 of the lid 5 when the lid 5 is placed on the cap body 4. A tongue-shaped recess 27 is formed in the outer wall surface of the housing (see FIG. 1). The concave portion 27 has a forming range, that is, a center angle θ2 centered on the central axis C1 of the cap body 4 of approximately 90° (see FIG. 5). An inclined surface 30 is formed on the upper edge of the outer periphery of the body 18 at a portion excluding the joint with the hinge 6 (i.e., on the opposite side of the hinge 6). . The inclination angle θ1 of the inclined surface 30 is approximately 30° (see FIG. 4), and the forming range of the inclined surface 30, that is, the central angle θ3 centered on the central axis C1 of the cap body 4 is approximately 250° or more (see FIG. 4). In one embodiment, it is approximately 300° (see Figure 5). Note that the center angle θ2 of the recess 27 may be 60° to 180°. The inclination angle θ1 and center angle θ3 of the inclined surface 30 may be changed as appropriate in consideration of the viscosity, surface tension, etc. of the contents. A protruding locking portion 21 is formed on the lower inner wall surface of the body portion 18 and engages with the maximum diameter opening portion 62 of the container mouth portion 3 . An annular space 22 into which the container opening 3 is fitted is formed between the cylindrical main fitting wall 19 and the body 18 .

On the lower inner wall surface of the cylindrical main fitting wall section 19, an annular wall section 10 integrally extends diagonally upward toward the radial center from the entire circumferential area thereof. The annular wall portion 10 has a truncated conical shape. A space 24 with an open upper part is formed by the annular wall part 10 and the inner wall surface of the cylindrical main fitting wall part 19 (see FIG. 3). A substantially circular discharge hole 25 is opened in the radial center of the annular wall portion 10 . The discharge port 25 communicates with the inside of the container mouth 3. An annular valve seat 26 is formed around the discharge hole 25 . The annular valve seat 26 is formed into an inverted conical surface 28 .

An annular protrusion 17 that protrudes upward is formed on the outer peripheral portion of the upper surface of the annular horizontal wall 20 . An annular fitting recess 23 that extends annularly along the circumferential direction is formed on the upper inner wall surface of the cylindrical main fitting wall 19 . The annular protrusion 17 is formed with a projection locking part 31 that extends annularly along the circumferential direction on the outer wall surface thereof.

As shown in FIGS. 3 and 7, the check valve 12 is molded from a material such as polyethylene elastomer, which has higher elasticity than the synthetic resin from which the main cap body 11 is molded. A cylindrical support part 34 that comes into contact with the inner wall surface of the wall part 19 , a plurality of elastic pieces 35 that integrally extend from the inner wall surface of the cylindrical support part 34 toward the center in the radial direction, and a tip end of each elastic piece 35 . It is composed of a valve part 36 that is integrally connected and opens and closes the discharge hole 25, and a plurality of communication holes 37 that are provided between each elastic piece 35 and through which the contents from the discharge hole 25 flow.

Each elastic piece 35 extends from the upper inner wall surface of the cylindrical support portion 34 toward the radial center and diagonally downward in a slightly curved manner. In the first embodiment, the elastic pieces 35 are formed at four locations at a pitch of 90° in the circumferential direction, and the communication holes 37 are formed at four locations at a pitch of 90° between the elastic pieces 35 (see FIG. 7). Further, the tip end of each elastic piece 35 is integrally connected to the upper edge of the outer circumference of the valve part 36. The valve portion 36 has a dome shape, and more specifically, has a circular shape in plan view and is composed of an upwardly convex curved wall portion. The outer periphery of the valve portion 36 is formed into an inverted conical surface 29 so as to sit on the annular valve seat 26 (inverted conical surface 28) (see FIG. 3).

As shown in FIGS. 3 and 6, the inner plug 13 is molded from a thermoplastic resin such as polyethylene, and is fitted into the upper part of the main cap body 11 so as to be disposed above the check valve 12. The inner plug 13 includes a disk-shaped horizontal wall portion 43, a cylindrical support portion 40 formed on the lower surface of the outer periphery and fitted into the cylindrical main fitting wall portion 19 of the main cap body 11, and a cylindrical support portion 43. A cylindrical guide part 42 is formed on a horizontal wall part 43 inside the part 40 and has a discharge passage 41 therein. The horizontal wall portion 43 is formed with an annular collar portion 43 a that projects from the outer peripheral surface of the cylindrical support portion 40 in the radial direction. The cylindrical support portion 40 is arranged above the cylindrical support portion 34 that constitutes the check valve 12 . An annular protruding portion 44 extending in the circumferential direction is formed on the outer wall surface of the cylindrical support portion 40 and engages with the annular fitting recess 23 of the cap body 4 to maintain sealing. The thickness of the peripheral wall of the cylindrical support part 40 of the inner stopper 13 and the thickness of the peripheral wall of the cylindrical support part 34 of the check valve 12 are configured to be substantially the same. The cylindrical guide portion 42 is erected from the center of the upper surface of the horizontal wall portion 43 in the radial direction.

As shown in FIGS. 3 and 5, the lid body 5 is molded from a synthetic resin such as polypropylene, and is integrally connected to the body portion 18 of the main cap body 11 via a hinge 6. The lid body 5 includes a cylindrical body part 50 that is connected to the outer wall surface of the body part 18 of the main cap body 11 via a hinge 6, and a top that is integrally connected to the entire circumferential area of the upper end of the body part 50. It is composed of a surface portion 51 and a cylindrical descent regulating portion 55 that is vertically provided from the lower surface of the top surface portion 51 and arranged concentrically inside the body portion 50 .

The lower surface of the body portion 50 has a stepped shape. Specifically, as shown in FIG. 2(b), the lower surface of the body 50 comes into contact with the upper surface of the annular horizontal wall 20 of the main cap body 11 when the lid 5 is placed on the cap body 4. It includes a first lower surface 57, a second lower surface 56 (non-contact lower surface) that does not contact the upper surface of the annular horizontal wall portion 20 of the main cap body 11, and a stepped portion 58 that connects the first lower surface 57 and the second lower surface 56. . In the first embodiment, the step height dimension B from the first lower surface 57 to the second lower surface 56 (that is, the height dimension of the step portion 58, see FIG. 2(b)) is 0.3 mm or more and 1.0 mm or less. (In the first embodiment, the step height dimension B is 0.5 mm). Here, by fitting the lid body 5 onto the cap body 4, a gap D (see FIG. 4) is formed between the lid body 5 and the inclined surface 30 of the body portion 18. In the first embodiment, the dimension of the gap D between the base of the inclined surface 30 is set to 0.3 mm or more and 1.0 mm or less (in the first embodiment, the dimension of the gap D is set to 0.5 mm or less). be). The first lower surface 57 is provided on the lower surface of the side connected to the hinge 6. The second lower surface 56 is provided on the lower surface of the trunk 50 facing the inclined surface 30 of the trunk 18 . The formation range of the second lower surface 56, that is, the central angle θ4 centered on the central axis C2 of the lid body 5 is approximately 250° or more (in the first embodiment, the central angle θ4 is approximately 300° ( (See Figure 5)). A cylindrical stopper part 52 that fits tightly inside the upper end of the cylindrical guide part 42 of the inner stopper 13 constituting the cap body 4 is vertically provided in the radially central part of the top surface part 51 . The cylindrical plug part 52 extends so as to penetrate the horizontal wall part 43 of the inner plug 13 (see FIG. 3). An annular cylindrical descent restriction portion 55 is vertically provided on the lower surface of the top surface portion 51 near the body portion 50 so as to be located between the body portion 18 and the cylindrical main fitting wall portion 19. A protruding locking portion 53 that extends annularly in the circumferential direction is formed on the lower inner wall surface of the body portion 50 . A grip portion 54 that is gripped by a user is formed on the outer circumferential wall surface of the body portion 50 on the side opposite to the hinge 6 side so as to cover the recess 27 of the body portion 18 (see FIG. 1). Note that the center angle θ4 of the second lower surface 56, the step height dimension B, and the dimension of the gap D may be changed as appropriate in consideration of the viscosity, surface tension, etc. of the contents.

Next, the operation of the cap 1A according to the first embodiment will be explained.
When discharging the contents, first, the lid 5 is opened to expose the inner stopper 13 of the cap body 4 to the outside.
Next, with the container 1 tilted in the discharge position so that the discharge passage 41 of the inner stopper 13 faces downward, when the body 7 of the container 2 is squeezed to apply internal pressure to the container 2, the internal pressure of the container 2 is acts on the entire lower wall surface of the valve portion 36 of the check valve 12, each elastic piece 35 of the check valve 12 is elastically deformed to bend, and the outer peripheral portion of the valve portion 36 (the inverted conical surface 29 ) is removed from the annular valve seat 26 (inverted conical surface 28) around the discharge hole 25 of the annular wall portion 10. As a result, the discharge hole 25 of the annular wall portion 10 is opened, and an appropriate amount of contents is allowed to flow from the inside of the container mouth portion 3 through the discharge hole 25, each communication hole 37 of the check valve 12, and the discharge passage 41 of the inner stopper 13. Discharged to the outside.

Thereafter, when the squeezing of the body 7 of the container 2 is stopped, the internal pressure in the container 2 is released, so each elastic piece 35 of the check valve 12 is restored and the outer peripheral part of the valve part 36 (inverted conical The shaped surface 29) is seated on the annular valve seat 26 (inverted conical surface 28) around the discharge hole 25 of the annular wall portion 10, and the discharge hole 25 of the annular wall portion 10 is closed by the valve portion 36. This brings the inside of the container 2 into a sealed state.

Next, when the hinge 6 is bent and the lid 5 is placed over the cap body 4 from above, the protrusion locking portion 53 provided on the body 50 of the lid 5 will move downward and cover the cap body 4. The cylindrical plug part 52 provided on the top surface part 51 of the lid body 5 engages with the protrusion locking part 31 provided on the annular horizontal wall part 20 of the main cap body 11, and the cylindrical plug part 52 provided on the top surface part 51 of the lid body 5 The inner stopper 13 is tightly fitted inside the upper end of the cylindrical guide portion 42 . At this time, even if the contents adhere to the outer peripheral edge of the annular horizontal wall 20 of the cap body 4, the second lower surface 56 of the lid body 5 does not come into contact with the outer peripheral edge of the main cap body 11, so that the contents do not scattering is prevented. Moreover, since the contents drip down along the inclined surface 30 of the body section 18, it becomes difficult for the contents to adhere to the outer peripheral edge of the annular horizontal wall section 20.

By covering the cap body 4 with the lid body 5, foreign matter is prevented from entering the cap body 4 (between the inner stopper 13, the check valve 12, and the annular wall portion 10), and the container 1 can be double sealed. Furthermore, since the inside of the cap body 4 is sealed by the lid body 5, even if some contents remain in the space 24 above the annular wall portion 10, the contents are difficult to oxidize.

According to the cap 1A of the first embodiment having the above configuration, the following effects can be obtained.
When the main cap body 11 is covered with the lid body 5, even if the contents are attached to the outer peripheral edge of the annular horizontal wall part 20 of the cap body 4, the cylindrical lowering regulating part 55 is attached to the annular horizontal wall part 20. At the abutting position, the protrusion locking portion 53 and the protrusion locking portion 31 engage with each other, so that the lower end surface (second lower surface 56) of the lid body 5 comes into contact with the outer peripheral edge of the annular horizontal wall portion 20. This prevents the contents from scattering.

Further, even if the contents adhere to the outer peripheral edge of the annular horizontal wall portion 20, the contents drip down due to the inclined surface 30 of the body portion 18. This makes it difficult for the contents to remain on the outer peripheral edge of the annular horizontal wall 20, and even if the contents remain, the amount of the contents attached to the outer peripheral edge of the annular horizontal wall 20 is small, forming a gap D. By doing so, it is possible to suppress the contents from scattering which occurs when the main cap body 11 is covered with the lid body 5.

Furthermore, when the lid body 5 is put on, even if a gap is created between the main cap body 11 and the lid body 5 at the periphery, the cylindrical descent regulating portion 55 is in contact with the annular horizontal wall portion 20, so that the contents can be It is possible to maintain a gap D that prevents the particles from scattering. Furthermore, since the contact position between the cylindrical descent regulating portion 55 and the annular horizontal wall portion 20 is located approximately above the large-diameter mouth portion 60 of the container mouth portion 3 of the container 2 (see FIGS. 3 and 4). ), the lid body 5 (cylindrical descent regulating portion 55) can receive a crowning impact that occurs when the lid body 5 is crowned.

Since the center angle θ3 of the inclined surface 30 of the body portion 18 is 250° or more, the contents can be dropped over a wider range, and the amount of the contents remaining attached to the upper end surface of the cap body 4 can be further reduced. be able to. Furthermore, by setting the center angle θ4 of the second lower surface 56 to 250° or more, when the lid 5 is placed on the cap body 4, the lower surface of the body 50 of the lid 5 forms an annular horizontal wall within that range. Since it does not come into contact with the upper surface of the container 20, scattering of the contents can be more reliably prevented.

Next, a cap 1B according to a second embodiment of the present invention will be described with reference to FIG. 8. In addition, in the following description, with respect to the cap 1A of the said 1st Embodiment, the same reference numerals are used for the same part, and only a different part is demonstrated in detail.

The cap 1B according to the second embodiment differs from the cap 1A according to the first embodiment in the structure of a part of the lid body 5 and the main cap body 11, and also includes a check valve 12 and an inner stopper 13. The other structures are the same.
Specifically, as shown in FIG. 8, the cylindrical lowering regulating portion 55 of the lid 5 is positioned closer to the trunk 50 when the lid 5 is crowned, and the cylindrical main fitting wall 19 is connected to the trunk 18. It is provided vertically from the lower surface of the top surface portion 51 so as to be located between the top surface portion 51 and the top surface portion 51 .
The main cap body 11 includes a body portion 18 , an annular horizontal wall portion 71 , and a cylindrical main fitting that extends vertically from the lower surface of the annular horizontal wall portion 71 and is arranged concentrically inside a cylindrical sub-fitting wall 32 . It is composed of a joint wall portion 19. The annular horizontal wall portion 71 has a cylindrical guide portion 73 having an internal discharge passage 75 erected approximately at the center thereof. The outer circumferential wall surface of the cylindrical main fitting wall portion 19 at its tip is rounded.
Note that by shifting the positions of the cylindrical guide portion 73 having the discharge passage 75 and the cylindrical stopper portion 52 provided substantially in the center in a direction away from the hinge 6, it becomes easier to discharge to the target location.

According to the cap 1B according to the second embodiment of the present invention, when the main cap body 11 is covered with the lid body 5, even if the contents adhere to the outer peripheral edge of the annular horizontal wall portion 20 of the cap body 4, , the protrusion locking part 53 and the protrusion locking part 31 engage with each other at the position where the cylindrical descent regulating part 55 abuts against the annular horizontal wall part 20, so that the lower end surface of the lid body 5 (the second lower surface 56) is not in contact with the outer peripheral edge of the annular horizontal wall portion 20. Thereby, the same effects as the cap 1A according to the first embodiment described above can be achieved.

In the caps 1A and 1B according to the first and second embodiments, the body portion 18 of the main cap body 11 is formed with an inclined surface 30 at the upper edge of its outer periphery, but it may be a curved surface. .

In the caps 1A and 1B according to the first and second embodiments, the cap body 4 is attached to the container opening 3 of the container 2 by plugging, but the inner surface of the body 18 of the main cap body 11 is A screw may be provided, and a male thread may be provided on the outer circumferential surface of the container opening 3, and the cap body 4 (main cap body 11) and the container 2 may be fitted together by screw fitting.

1A, 1B...Cap, 2...Container, 3...Container opening, 4...Cap body, 5...Lid, 6...Hinge, 18...Body part, 19...Cylindrical main fitting wall part, 31...Protrusion member Stop part, 30... Inclined surface, 41... Discharge passage, 42, 73... Cylindrical guide part, 51... Top surface part, 53... Projection locking part, 55... Cylindrical descent regulating part, 56... Second lower surface (non contact bottom surface)

Claims (3)

A cap comprising a cap body attached to a container opening and a lid hinged to the cap body via a hinge,
The cap body is
a body part that fits into the outer wall surface of the container mouth part;
a cylindrical main fitting wall portion that fits into the inner wall surface of the container mouth portion;
a cylindrical guide portion having a discharge passage communicating with the container mouth portion, and the lid body is configured to abut against a cap body between the body portion and the cylindrical main fitting wall portion when being crowned. , having a cylindrical descent regulating part hanging down from the lower wall surface of the top surface part of the lid body;
The outer peripheral upper edge of the body of the cap main body, excluding the joint portion with the hinge, is an inclined surface that slopes downward and outward in the radial direction of the body,
The cap is characterized in that the lid body includes a non-contact lower surface that does not come into contact with the inclined surface when the cap is worn. When the lid body is placed on the cap body, a gap is formed between the non-contact lower surface and the sloped surface, and the size of the gap is 0.3 mm or more and 1.0 mm or less. The cap according to claim 1. The formation range of the slope is formed within a range of a central angle of 250° or more around the central axis of the cap body, and the formation range of the non-contact lower surface is formed within a central angle of 250° or more around the central axis of the lid body. The cap according to claim 1 or 2, wherein the cap is formed in a range of 250° or more.

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