JP6537174B2 - Hinged cap - Google Patents

Description

  The present invention relates to a hinged cap.

  A hinged cap is known as a cap for a tube container for containing a dentifrice or the like, and a bottle container for containing a cosmetic or the like. As a specific example of the hinge-type cap, the lower end of the cylindrical outer cylinder wall is fixed to the upper end of the container body by a drive-type fitting, provided to close the upper end of the outer cylinder wall, and the central portion There is a cap provided with an upper lid portion for closing the spout through a hinge portion on an upper plate portion in which a spout for pouring out contents is formed.

  A container provided with such a hinged cap is excellent in usability because it is easy to open the upper lid with one hand. In the case of the hinge type cap, since it becomes difficult to push out the content as the remaining amount of the content decreases, screw fitting etc. is adopted so that it can be removed from the container main body and used. Will be used without removing it from the container body for a long time. As a result, it is considered that mold is generated in the cap or a part of the container main body covered by the cap due to the influence of humidity and temperature conditions and water infiltration. On the other hand, if the cap is of the drive-in type (type in which the cap can not be removed), although there is a possibility of the occurrence of mold, it is considered that it does not notice because it is not removed until the end.

  In order to prevent such mold generation, the composition which considered the drainage in a cap is indicated (for example, patent documents 1-3).

Japanese Patent Application Laid-Open No. 10-258853 Japanese Patent Application Publication No. 2004-250079 Japanese Patent Application Publication No. 08-11903

  However, in the configurations of Patent Documents 1 to 3, it is not assumed that the user selects the unsealing method according to preference each time of use. That is, since it is not assumed that the cap itself is removed from the container body and used, once the cap is removed from the body container, it is impossible to set it again.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hinged cap that can prevent mold from being generated and can be easily attached to and detached from the container body.

  The hinged cap according to one aspect of the present invention is a hinged cap that is detachably attached to the upper end of the container body containing the contents, and the cap body and the lid are coupled via the hinge portion. The cap body has an upper plate portion having a spout formed at the center, an inner cylindrical wall projecting downward from the upper plate portion, and an outer cylinder projecting downward from the outer side of the inner cylindrical wall of the upper plate portion. A wall, and an inner peripheral surface of the inner cylindrical wall is formed with an engaging portion that engages with the container body when the hinged cap is attached to the container body, and the upper plate portion Are formed with a plurality of through holes communicating with the inside of the outer cylinder wall, and the plurality of through holes are formed in the upper plate portion in a direction intersecting the direction in which the hinge portion is disposed with respect to the center. Are disposed on the outer cylinder wall side of both sides The features.

  In the hinged cap according to one aspect of the present invention, the plurality of through holes may be formed into an elongated hole shape along the shape of the outer cylinder wall viewed from the axial direction.

  In the hinged cap according to one aspect of the present invention, the lid has a ground contact surface and an outer wall projecting downward from the ground contact surface, and the outer wall has the hinge relative to the center. The air holes may be provided on both sides of the hinge portion in the direction intersecting with the direction in which is disposed.

  In the hinged cap according to one aspect of the present invention, the air hole may be provided on the side of the cap body opposite to the contact surface.

  According to the hinged cap of the present invention, it is possible to provide a hinged cap which can prevent mold generation and easily attach and detach the cap to the container body.

The figure which shows the mode which mounted | worn the hinge-type cap in 1st Embodiment with the container main body. The figure which shows an example of a hinge type cap. The figure which opened the cover part in the cap of FIG. The perspective view of a cap. The figure which opened the cover part in the cap of FIG. Sectional drawing which shows the structure of a cap main body. The figure which shows the structure of the back side of a cap.

  Hereinafter, an example of the hinged cap according to the present invention will be described in detail with reference to the drawings. In the drawings, in order to make each component easy to see, the scale of dimensions may be shown differently depending on the component.

First Embodiment
FIG. 1 is a view showing a state in which the hinge-type cap in the first embodiment is attached to a container main body. FIG. 2 is a view showing an example of a hinged cap, the container body is shown in a side view, and the cap is shown in a cross-sectional view. FIG. 3 is an open view of the lid of the cap of FIG. 2 with the container body shown in a side view and the cap shown in cross section. FIG. 4 is a perspective view of the cap. FIG. 5 is a view of the cap of FIG. 4 with the lid opened. FIG. 6 is a cross-sectional view showing the configuration of the cap body. FIG. 7 is a view showing the configuration of the back side of the cap.

  The hinged cap 3 of the present embodiment is detachably attached to the end portion of the container main body 101 that accommodates the contents. The container, in which the hinged cap 3 is attached to the container body 101, is placed upside down with the hinged cap 3 directed downward as shown in FIG. 1 in a normal use state.

(Container body)
The container main body 101 is not particularly limited as long as it can contain contents such as dentifrice, paste wasabi, paste glass, cosmetic cream, etc. For example, a tube, a bottle, a pouch, a metal can, a bottle, etc. It can be mentioned.

  As shown in FIGS. 2 and 3, the container body 101 includes a body portion 102 for containing contents, and a shoulder portion 103 formed at the upper end of the body portion 102 and inclined so as to gradually narrow upward. And a cylindrical neck portion 104 which is provided on the upper end of the shoulder portion 103 and which is open at the upper end. The cross-sectional shape of the trunk portion 102 is not particularly limited, and can be arbitrarily selected, for example, circular, polygonal, elliptical, star-shaped, or the like. Here, "cross-section" means a cross-section when cut in a direction perpendicular to the longitudinal direction of the body.

  On the outer peripheral surface of the neck portion 104, a first engagement portion (engagement portion) 106 formed of an annular ridge protruding radially outward over the entire circumference of the neck portion 104 is provided. The longitudinal cross-sectional shape of the first engaging portion 106 is a triangular shape in this example, but is not limited to a triangular shape, and may be semicircular, rectangular or the like.

[Hinge type cap]
As shown in FIGS. 2 and 3, the hinged cap (hereinafter simply referred to as “cap 3”) of the present embodiment is formed by connecting the cap body 2 and the lid 26 via the hinge portion 24.

  The cap body 2 protrudes downward from the outer plate 20, the inner cylindrical wall 22 projecting downward from the upper plate 20, and the periphery of the upper plate 20, that is, the outer cylindrical wall 22 of the upper plate 20. And an outer cylinder wall 18.

The upper plate portion 20 has a shape in which a part of a circle is linearly hung in a plan view (FIG. 4), and a spout 20 a (FIG. 5) is formed in a central portion. The lid portion 26 is adapted to open and close the spout 20 a freely.
The inner cylindrical wall 22 is suspended from the upper plate portion 20 so as to surround the spout 20 a inside the outer cylindrical wall 18.

The outer cylinder wall 18 is suspended from the outer edge of the upper plate portion 20 outside the inner cylinder wall 22.
The outer cylinder wall 18 is a notched circle in which the side of the hinge portion 24 in a circular shape in plan view is cut in a curved shape. The front and side portions of the outer cylindrical wall 18 gradually expand in diameter downward.

  The back side portion of the outer cylinder wall 18 of the cap 3 is vertically suspended from the back side portion of the upper plate portion 20 with respect to the upper plate portion 20. Thus, the outer diameter of the rear wall 18b of the outer cylinder wall 18 does not change in the vertical direction. Thereby, the cap 3 can be manufactured at lower cost without using a special mold.

  The bottom view shape of the lower end of the outer cylinder wall 18 is a broken circle in which the side of the circular hinge portion 24 is cut in a curved shape. The lower end of the rear wall 18b of the outer cylinder wall 18 vertically suspended from the cut-out side 20c (FIG. 5) of the upper plate portion 20 follows the shape of the shoulder portion 103 of the container main body 101 toward the lid 26 side. It has a concave arc shape.

  As shown in FIG. 5, the outer cylinder wall 18 is pressed inward in the radial direction to a portion of the outer cylinder wall 18 opposed in the direction (Y direction) intersecting the opening / closing direction (X direction) of the hinge portion 24. Pressed position display portions 19 and 19 are provided to indicate the position.

  The pressed position display portions 19 are respectively provided on both sides in a direction (Y direction) intersecting the opening / closing direction (X direction) of the hinge portion 24 in the outer cylindrical wall 18. When the pressing position indicators 19, 19 are pressed toward the inside of the outer cylindrical wall 18, the lower end 18a of the outer cylindrical wall 18 sticks up on the surface of the shoulder portion 103 of the container main body 101, and the cap 3 (the outer cylindrical wall 18 Is released, and the engagement between the second engagement portion (engagement portion) 28 on the cap 3 side and the first engagement portion 106 on the container body 101 side is released.

  When the shape of the outer cylinder wall 18 in a plan view is as described above, it is preferable to provide the pressing position display portions 19 and 19 in portions of the outer cylinder wall 18 opposed in the Y direction as in the present embodiment. .

  When the plan view shape of the outer cylindrical wall 18 is a broken circle in which the side of the hinge portion 24 is missing, pressing the opposing portion in the Y direction of the outer cylindrical wall 18 faces in the X direction of the outer cylindrical wall 18 The outer cylindrical wall 18 is more likely to ascend the shoulder portion 103 of the container main body 101 than when the portion is pressed. Therefore, by providing the pressed position display portions 19, 19 and urging the pressed position display portions 19, 19, the cap 3 can be easily removed from the container main body 101.

  The pressed position display portions 19, 19 in this example are formed of a plurality of ridges extending in the vertical direction and projecting outward from the outer surface of the outer cylindrical wall 18. The aspect of the pressing position display parts 19 and 19 is not limited to the aspect which consists of a plurality of convex lines, and may be formed by printing or the like. The front view shape of the pressing position display parts 19 and 19 is substantially rectangular in this example. The front view shape of the pressing position display portions 19 may be a semicircular shape or the like.

  In the outer cylindrical wall 18, the lower end 18 a comes in contact with the shoulder portion 103 when the pressing position display portions 19, 19 are pressed inward in the radial direction with the cap 3 attached to the container body 101. There is. Then, when the pressing position indicators 19, 19 on the outer cylinder wall 18 are pressed inward in the radial direction, the lower end 18a of the outer cylinder wall 18 contacts the shoulder 103, and the lower end 18a of the outer cylinder wall 18 is the shoulder 103 By raising the cap 3, the cap 3 is pushed up and removed from the container main body 101.

  In a state in which the pressing position display portions 19 of the outer cylindrical wall 18 are not pressed inward in the radial direction, the lower end 18 a of the outer cylindrical wall 18 has the shoulder portion 103 with the cap 3 attached to the container body 101. It is preferable to be spaced apart from the shoulder 103 so that it does not contact the shoulder 103 even if it is bent upward. Thus, by narrowing the upper end portion of the body portion 102 of the container main body 101 when the remaining amount of the content is small, the cap 3 is unexpectedly removed even if the shoulder portion 103 is curved upward. Can be suppressed.

  The distance between the lower end 18a of the outer cylinder wall 18 and the shoulder portion 103 in the state where the pressed position display portions 19, 19 of the outer cylinder wall 18 are not pressed inward in the radial direction is outside when the outer cylinder wall 18 is pressed. The cylindrical wall 18 can be appropriately set within a range in which the shoulder portion 103 is lifted, and is determined by the balance between the fitting force of the first engaging portion 106 and the second engaging portion 28 described later. This distance can be, for example, 0 to 2.0 mm.

The plan view shape of the upper plate portion 20 is a shape in which the side of the hinge portion 24 in a circle is linearly broken.
As described above, in the cap 3, the hinge portion 24 is an outer edge of the upper end of the trunk portion 102 of the container main body 101 in plan view by making the shape of the upper plate portion 20 in plan view of the upper plate portion 20 I try to fit inside more than. Thereby, it is possible to suppress that the hinge portion 24 is caught and difficult to handle at the time of use, storage, transport and the like.

  In addition, by adopting such a shape in which the side of the hinge portion 24 is missing in the upper plate portion 20, it is not necessary to change the size of the filling facility of the contents, and the filling of the contents becomes easy. Further, while the hinge portion 24 is housed inside the outer edge of the upper end of the trunk portion 102 in plan view, the radius of the front surface portion and the side surface portion of the outer cylinder wall 18 is large until it becomes equal to the radius of the upper end portion of the trunk portion 102 can do. Thereby, when the opposing portion in the outer cylinder wall 18 is pressed inward in the radial direction, the outer cylinder wall 18 lifts the shoulder portion 103 and the cap 3 is easily pushed up sufficiently, so that the cap 3 is a container It becomes easy to remove from the main body 101.

  Further, in a plan view, a portion of the upper plate portion 20 opposite to the hinge portion 24 has a shape in which a part of a circle is cut in a convex curved shape toward the outer side in the radial direction by a recess 32 described later. ing. Thus, the planar view shape of the whole upper board part 20 of this example is a substantially elliptical shape long to a Y direction.

  In the central portion on the inner side of the inner cylindrical wall 22 in the upper plate portion 20, a spout 20a having a circular shape in a plan view is formed. The diameter of the spout 20a is smaller than the diameter of the upper end opening 104b in the neck portion 104 of the container body 101, as shown in FIGS.

  As shown in FIGS. 5 and 6, in the direction (Y direction) intersecting the direction (X direction) in which the hinge portion 24 is arranged with respect to the center in the upper plate portion 20, a pair of water drainage holes Holes 25, 25 are formed. The pair of drainage holes 25 is an outer cylinder wall on both sides of the inner cylinder wall 22 in a direction (Y direction) intersecting the opening / closing direction (X direction) of the hinge portion 24 in plan view in the upper plate portion 20. They are respectively formed at positions 18 and communicate with the inside of the outer cylinder wall 18.

  By the formation of the drainage holes 25, even if water gets into the inside of the outer cylinder wall 18 on the shoulder portion 103, it is easy to dry, so that the mold of the shoulder portion 103 is hard to grow. In addition, the drainage holes 25, 25 are formed at the above-described position in the upper plate portion 20, that is, at a position separated from the pouring port 20a, so that the contents taken out from the pouring cylindrical portion 23 described later at the time of use Filling of the drain holes 25, 25 is suppressed.

  The plan view shape of the drainage holes 25 is an elongated hole shape in this example. The plan view shape of the drainage holes 25, 25 is not limited to the elongated hole shape, but it is preferable that the longitudinal direction is curved along the outer shape of the outer cylindrical wall 18.

  The above effect can also be obtained by setting the bending rigidity of the upper plate portion 20 higher than the bending rigidity of the outer cylindrical wall 18. The embodiment in which the bending rigidity of the upper plate portion 20 is made higher than the bending rigidity of the outer cylinder wall 18 is not particularly limited, and the embodiment in which the thickness of the upper plate portion 20 is thicker than the thickness of the outer cylinder wall 18, the outer cylinder wall 18 The aspect which forms the upper board part 20 with the material from which a bending rigidity becomes high rather than the material which forms, the aspect which provides a rib in the upper board part 20, and is reinforced is mentioned. Among them, an aspect in which the thickness of the upper plate portion 20 is thicker than the thickness of the outer cylinder wall 18 is preferable in terms of easy production.

  The inner cylinder wall 22 is provided so as to extend downward from the inner side of the outer cylinder wall 18 in the upper plate portion 20. The inner cylinder wall 22 is cylindrical. The inner diameter of the inner cylindrical wall 22 is substantially equal to the outer diameter of the neck portion 104 of the container main body 101, and the neck portion 104 of the container main body 101 is fitted into the inner cylindrical wall 22.

Preferably, the inner cylinder wall 22 is formed with one or more notch grooves 22b extending upward from the lower end of the inner cylinder wall 22 in the circumferential direction, as shown in FIG. The notch groove 22b is an elongated slit-like gap.
In addition, a second engaging portion that engages with the first engaging portion 106 on the container main body 101 side when the cap 3 is attached to the container main body 101 at a portion near the lower end in the inner peripheral surface 22 a of the inner cylindrical wall 22 28 are provided. The second engaging portion 28 is an annular ridge extending in the circumferential direction of the inner circumferential surface 22 a and extending radially inward.

  Since the inner cylinder wall 22 is easily bent by the notch groove 22 b provided in the inner cylinder wall 22, the neck portion 104 of the container body 101 is fitted into the inner cylinder wall 22, and the first engagement of the container body 101 is achieved. It becomes easy to engage the engagement portion 106 and the second engagement portion 28 on the cap 3 side described later. The number of notch grooves 22 b formed in the inner cylinder wall 22 is not particularly limited, and may be one or more. In the present embodiment, a plurality of cutout grooves 22 b are provided at predetermined intervals in the circumferential direction of the inner cylindrical wall 22.

  The inner cylinder wall 22 has flexibility, and when the neck portion 104 is fitted inside the inner cylinder wall 22 of the cap 3 and the cap 3 is attached to the container main body 101, The two engaging portions 28 are engaged. Specifically, the second engagement portion 28 is caught on the lower side of the first engagement portion 106 to form an engagement structure. As a result, the cap 3 attached to the container body 101 is restricted from moving upward, and the cap 3 is prevented from coming off unexpectedly.

  In a state where the cap 3 is attached to the container main body 101, when the opposed pressing position display portions 19, 19 of the outer cylindrical wall 18 are pressed inward in the radial direction, the outer cylindrical wall 18 lifts the shoulder portion 103, When the engagement state of the second engagement portion 28 with the one engagement portion 106 is released, the cap 3 is pushed up and removed from the container main body 101.

  The longitudinal cross-sectional shape of the second engaging portion 28 is a triangular shape in this example, but is not limited to a triangular shape, and may be semicircular, rectangular or the like.

  Inside the inner cylinder wall 22 on the lower surface of the upper plate portion 20, a cylindrical sleeve 21 suspended from the peripheral edge of the spout 20a is provided. In a state in which the cap 3 is attached to the neck portion 104 of the container main body 101, the sleeve 21 functions as an inner ring which is liquid-tightly inserted inside the upper end opening 104b of the neck portion 104. Thereby, in a state where the cap 3 is attached to the container main body 101, leakage of the contents from the neck portion 104 to the shoulder portion 103 below the upper plate portion 20 is suppressed.

  On the inner side of the inner cylindrical wall 22 on the upper surface of the upper plate portion 20, a cylindrical spout cylinder portion 23 protruding upward from the peripheral edge of the spout 20a is provided. The content accommodated in the container main body 101 is poured out of the spout cylinder portion 23 from the neck portion 104 through the sleeve 21 and the spout 20 a.

  The hinge portion 24 is a three-point hinge, and includes a central hinge 24A having an L-shaped cross section provided centrally on the back side of the cap, and a pair of thin hinges 24B and 24B provided on both sides of the central hinge 24A. Have. The central hinge 24A is formed such that the lower portion is connected to the back wall 18b of the outer cylinder wall 18, and the upper portion is connected to the lid 26. The thin hinges 24B, 24B are formed to project rearward from the back wall 18b.

  In addition, the hinge mechanism of the hinge part 24 is not limited to 3 point type, For example, 1 point type, 2 point type, butterfly type, snap hinge type, spring fitting type etc. are employable.

  At a central portion of the lid 26, an annular protrusion 30 hanging from the lower surface of the lid 26 is provided. In a state in which the cap 3 is attached to the container main body 101, the tip end of the pouring-out tube portion 23 protruding upward from the upper plate portion 20 is fitted into the annular protrusion 30. That is, the lid portion 26 is configured to open and close the pouring barrel portion 23 communicating with the spout 20 a by a so-called outer ring method. Thereby, leakage of the contents is suppressed in the state in which the lid 26 is closed.

  In the container of the present invention, an inner ring system may be adopted, and an inner boss system may be adopted.

  A recess 32 recessed inward in the radial direction is formed on the front surface portion of the lid 26 and the outer cylinder wall 18 opposite to the hinge 24, and the tip of the lid 26 on the front side is a finger hook 34 It is assumed. Thereby, the lid 26 can be easily opened by putting a finger on the finger hook 34. The front surface of the lid portion 26 is a surface directed downward when the container is used, and is a portion to be a ground surface 26a in contact with a mounting surface such as a wash basin.

  The recess 32 is formed so as to be recessed radially inward as it extends upward from the lower end 18 a of the outer cylinder wall 18 and to be recessed radially inward as it extends downward from the upper end of the lid 26. The shape and size of the recess 32 are not particularly limited, and can be appropriately set according to the size of the cap 3 and the like.

  As shown in FIG. 7, in this example, both sides of the hinge portion 24 in the direction (X direction) intersecting the direction (X direction) in which the hinge portion 24 is disposed at the center on the back surface portion of the lid 26. The air holes 27, 27 are respectively formed in the. As a result, the gap between the shoulder 103 and the lower end 18 a of the outer cylindrical wall 18 forms the inside of the outer cylindrical wall 18 on the shoulder 103, the drainage holes 25 and 25 formed in the upper plate 20, and the lid 26. There is a passage of air leading to the air holes 27, 27 which have been made. Therefore, the rate of drying when water enters the inside of the outer cylinder wall 18 on the shoulder portion 103 becomes faster, and therefore, the mold of the shoulder portion 103 becomes harder to grow.

  Further, the air holes 27, 27 are provided on the side of the cap main body 2 on the opposite side to the ground contact surface 26 a in the outer wall 26 b of the lid 26. As a result, when the container is placed upside down, the air holes 27, 27 are positioned at a position higher than the ground contact surface 26a of the lid 26, so the container is collected on the placement surface on which the container is placed upside down. Water can be prevented from entering the inside of the lid 26 through the air holes 27, 27.

  The front view shape of the air holes 27, 27 is rectangular in this example. In addition, the planar view shape of the air holes 27 and 27 is not limited to a rectangle, and may be circular, triangular, or the like.

  The material of the cap 3 is not particularly limited as long as it is a material generally used for the cap, and examples thereof include PP, PE, PA, PET, PS, metals, composite materials of these, and the like.

  According to the hinge-type cap 3 of the present embodiment, even when water infiltrates from the gap between the container body 101 and the cap 3, the water draining holes 25 provided in the upper plate portion 20 of the cap body 2 can be used. It is possible to drain water from the cap body 2 to the lid 26 side via the same. In addition, the air holes 27, 27 provided on the back side of the cap 3 can accelerate the drying of the water discharged into the lid 26. For this reason, even when the cap 3 is used without being removed from the container main body 101 for a long time, it is possible to prevent the generation of mold due to the influence of humidity, temperature conditions and water intrusion.

  Further, by providing the long water drain holes 25 25 on the outer cylinder wall 18 side of the upper plate portion 20 of the cap body 2, the contents in the container body 101 can be made to the cap 3 side at the end of use. When trying to push it out, the entire cap 3 is likely to be deformed outward by the deformation of the shoulder portion 103, and the cap 3 is unexpectedly removed by absorbing the push-up of the cap 3 due to the deformation of the shoulder portion 103. It is possible to suppress the

  Furthermore, when the water draining holes 25, 25 of the cap main body 2 are in the form of elongated holes, when the pressed position display portions 19, 19 on the outer cylindrical wall 18 are pressed inward in the radial direction, the pressed position display portion 19, The deformation of the outer cylinder wall 18 when pressing 19 is less likely to be transmitted to the upper plate portion 20. Thereby, when removing the cap 3 from the container main body 101, it can eliminate that the cover part 26 remove | deviates unexpectedly. As a result, it is not necessary to make the plate thickness unnecessarily thick in order to prevent the deformation of the upper plate portion 20.

  In addition, it is not restricted to the structure of the said embodiment, A change is suitably possible.

  Although the preferred embodiments according to the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is apparent that those skilled in the art can conceive of various modifications or alterations within the scope of the technical idea described in the claims, and the technical scope of the present invention is also natural for them. It is understood to belong to

  DESCRIPTION OF SYMBOLS 1 ... container, 2 ... cap main body, 3 ... cap, 3 ... hinged cap, 18 ... outer cylinder wall, 20 ... upper plate part, 20a ... pouring outlet, 22 ... inner cylinder wall, 22a ... inner peripheral surface, 24 ... Hinge part, 25: drainage hole (through hole), 26: lid part, 26a: contact surface, 26b: outer wall part, 27: air hole, 28: second engagement part (engagement part), 101: container body , 106 ... first engagement portion (engagement portion)

Claims (2)

A hinged cap removably attached to the upper end of a container body for containing contents, comprising:
The cap body and the lid are connected via a hinge,
The cap body has an upper plate portion having a spout formed at the center, an inner cylindrical wall projecting downward from the upper plate portion, and an outer cylinder projecting downward from the outer side of the inner cylindrical wall of the upper plate portion. With a wall,
The inner peripheral surface of the inner cylindrical wall is formed with an engaging portion that engages with the container body when the hinged cap is attached to the container body.
The upper plate portion is formed with a plurality of through holes communicating with the inside of the outer cylinder wall,
The plurality of through holes are respectively disposed on the outer cylinder wall side on both sides of the upper plate portion in a direction intersecting the direction in which the hinge portion is disposed with respect to the center ,
The lid includes a ground contact surface and an outer wall projecting downward from the ground contact surface,
In the outer wall portion, air holes are respectively provided on both sides of the hinge portion in a direction intersecting the direction in which the hinge portion is disposed with respect to the center,
The said air hole is provided in the said cap main body side on the opposite side to the said ground-contact plane, The hinge-type cap characterized by the above-mentioned .   The hinged cap according to claim 1, wherein the plurality of through holes are formed in an elongated hole shape along the shape of the outer cylinder wall viewed from the axial direction.