JP2024035033A - hinge cap - Google Patents

Abstract

To provide a hinge cap that facilitates elastic deformation when pressed when discharging a content liquid little by little, and that can reliably seal a nozzle part when closing a lid.SOLUTION: There is provided a hinge cap A that includes a cap body A1 that is attached to a container body D, and an upper lid A2 that is attached to the cap body A1 through a hinge part A3. The cap body A1 includes: a mounting part 5 attached to a mouth part 1 of the container body D; a cylindrical wall 7 formed on an upper part of the mounting part 5; a pressing part C1 closing an inside of an upper end of the cylindrical wall 7; and a nozzle part 8 that discharges a content liquid from the cylindrical wall 7 when pressurized by the pressing part C1. The upper lid A2 includes a sealing part 31 with an inner circumferential surface coming into close contact with a tip opening 8a of the nozzle part 8 when the lid is closed. The pressing part C1 and the sealing part 31 are integrally molded from an elastic resin C that can be elastically deformed.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a hinge cap, and particularly to a hinge cap capable of discharging a liquid contained therein little by little.

Conventionally, a container with a cap is attached to the mouth of a container body filled with a liquid such as chili oil, and the liquid can be discharged little by little by pressing the center top surface of the cap with a nozzle while the container body is tilted. However, there was a problem in that the pressing part of the cap that is pressed during discharge is difficult to elastically deform.

Therefore, the top wall of the spout stopper with a nozzle whose peripheral wall is fitted into the mouth of the container is connected to an inward flange attached to the upper end of the peripheral wall, and a short tube that extends forward from the nozzle and extends from the inner peripheral edge of the inward flange. The spiral elastic tube is formed of a cylindrical portion, a helical elastic tube with a small diameter at the top that stands up from the upper end of the short cylindrical portion, and a small crested cylinder that stands up from the upper end of the tube and closes the top surface of the cylindrical portion with a top plate. Heretofore, a hinge cap has been known in which the cylinder wall is successively thinned along the spiral direction of a spiral elastic cylinder from one end of the cylinder wall to the other end (see Patent Document 1). ).

Japanese Patent Application Publication No. 9-175557

However, in the hinge cap described in Patent Document 1, the helical elastic cylinder, which is the pressing part, is made of the same resin as the other parts of the cap, so when the content liquid is discharged, the helical elastic cylinder becomes elastic. There was a problem that it was difficult to deform.

The present invention aims to solve the above-mentioned problems, and has a hinge that facilitates elastic deformation when pressed when discharging the content liquid little by little, and that can reliably seal the nozzle part when the lid is closed. The purpose is to provide a cap.

In order to solve the above-mentioned problems, the present invention provides a hinge cap that includes a cap body that is attached to a container body and an upper lid that is attached to the cap body via a hinge part, the cap body comprising: A mounting part attached to the mouth of the container body, a cylindrical wall formed on the top of the mounting part, a pressing part that closes the inside of the upper end of the cylindrical wall, and when pressurized by the pressing part, the cylindrical wall The upper lid has a sealing part whose inner peripheral surface comes into close contact with the tip opening of the nozzle part when the lid is closed, and the pressing part and the sealing part are elastically deformable. Adopts a structure characterized by being integrally molded from elastic resin.

As an embodiment of the hinged cap, the cap body has an upright side wall that stands on the nozzle side of the upper end of the cylindrical wall, and the pressing part is inclined inward from the upper end of the cylindrical wall and is connected to the nozzle. The cap body has a structure characterized by having a sloped peripheral wall whose side is adjacent to the inner peripheral surface of the upright side wall, and a top wall that closes the upper end of the inner peripheral surface of the sloped peripheral wall, and the cap body has a nozzle part of the cylindrical wall. It has an inclined cylindrical wall whose side is higher than the opposite side to the nozzle part side, and a ring-shaped inclined surface formed on the inner periphery of the upper end of the inclined cylindrical wall, and the pressing part is located inside the inclined surface. a peripheral wall extending at an angle; a top wall extending horizontally from the nozzle side of the peripheral wall to a side opposite to the nozzle side; a side wall closing between the outer edge of the top wall and the inner edge of the peripheral wall; The pressing part has a structure characterized by having a stepped part formed between the top wall, the side wall, and the peripheral wall, and the thickness of the pressing part is such that the thickness of the top wall, side wall, and peripheral wall is such that the thickness of the top wall>the side wall part>the peripheral wall part. The top cover has a top wall, a sloped sidewall whose diameter is expanded downward from the periphery of the top wall, and a top cover that is vertically suspended from the bottom end of the sloped sidewall. The inclined side wall has an opening formed on the nozzle side, and an upper lid elastic part that circumferentially covers the outer peripheral surface and closes the opening. A configuration is adopted in which the inner circumferential surface of the upper lid elastic part serves as a sealing part, and a configuration is adopted in which the pressing part and the sealing part are integrally molded by two-color molding.

By adopting the above configuration, the hinge cap of the present invention allows the pressing part to easily deform elastically when pressed, and when the lid is closed, the nozzle part is reliably sealed by the sealing part of the top lid to prevent liquid leakage. can do.
Furthermore, the structure of the hinge cap can be easily and stably integrally molded by two-color molding.

It is a figure which shows the container equipped with the hinge cap which is Example 1 of this invention, (a) is a top view when the lid is opened, and (b) is a side sectional view when the lid is closed. 1 is a diagram showing a state of a hinge cap according to a first embodiment of the present invention when the lid is opened, in which (a) is a top view and (b) is a side sectional view; FIG. 1 is a diagram showing a closed state of a hinge cap according to a first embodiment of the present invention, in which (a) is a top view and (b) is a side sectional view; FIG. FIG. 2 is a side sectional view showing a state in which a container equipped with a hinge cap according to Example 1 of the present invention is used. It is a figure which shows the container equipped with the hinge cap which is Example 2 of this invention, (a) is a top view when the lid is opened, and (b) is a side sectional view when the lid is closed. It is a figure which shows the state when the lid of the hinge cap which is Example 2 of this invention is opened, (a) is a top view, (b) is a side view. 5(b) is an enlarged view of the main part of the cap body in FIG. 5(b), (a) is a view before the pressing part is pressed, and (b) is a view when the pressing part is pressed.

Next, examples of the hinge cap of the present invention will be described with reference to the drawings.
In the following description, the upper direction will be referred to as "upper" and the lower direction will be referred to as "lower" when viewed in FIG. 1(b).

(Example 1)
In FIG. 1, A is a hinge cap that is attached to the container body D, A1 is a cap body that is attached to the container body D, and A2 is an upper lid that is connected to the cap body A1 via a hinge part A3.
The main part of the hinge cap A is made of a normal basic resin B such as polypropylene or polyethylene that has a certain degree of rigidity and is difficult to deform, and the specific part is made of a flexible material such as an elastically deformable elastomer. It is made of elastic resin C.
The container main body D has an opening 1 at the top, and a male thread 2 is threaded onto the outer peripheral surface of the opening 1 in order to attach the cap main body A1.

Hinge cap A is made by engaging a core (second mold) with a cavity (first mold) that is formed with the lid open, and injecting basic resin B to form the entire hinge cap A. It is formed using a two-color molding technique (core back) in which the press part C1 and the upper lid elastic part C2 are integrally molded on a part of the cap body A1 and the upper lid A2 by core-backing the cap against the cavity, injecting an elastic resin C such as an elastomer be done.
Furthermore, the hinge cap A can be integrally molded not only by the two-color molding technique but also by insert molding, etc., and any molding method may be used as long as the basic resin B portion and the elastic resin C portion can be integrally molded.

As shown in FIGS. 1 to 3, the cap body A1 includes an outer circumferential cylindrical wall 5 as a mounting portion that is attached to the outer periphery of the mouth portion 1 of the container body D, and an outer circumferential cylindrical wall 5 that extends inward from the upper inner edge of the outer circumferential cylindrical wall 5. A ring-shaped upper wall 6 is provided, and the upper end surface of the mouth portion 1 is in close contact with the lower surface of the ring-shaped upper wall 6; As shown in FIG. 2(a), a nozzle portion 8 extends by forming an opening 7a at a position of 90 degrees from the hinge portion A3 side of the cylindrical wall 7 on either the left or right side (on the right side in the figure) when viewed from above. and an upright side wall 9 which is inclined inward and stands upright on the nozzle part 8 side at the upper end of the cylindrical wall 7 and is made of basic resin B, which closes the inside of the upper end of the cylindrical wall 7 and which also stands upright. A truncated conical pressing portion C1 connected to the inner peripheral surface of the side wall 9 is made of an elastic resin C.

A female thread 10 is threaded onto the inner peripheral surface of the outer circumferential cylinder wall 5 and is threaded onto the outer periphery of the upper wall 6 to maintain the closed lid of the upper lid A2. A lid engaging portion 11 is provided.
The nozzle part 8 extends diagonally upward at an angle θ with respect to the horizontal direction due to the slanted cylindrical wall 7, and the tip opening 8a is formed in a trumpet shape for easy liquid drainage. There is.

The pressing portion C1 extends inward from the upper end of the cylindrical wall 7 and closes the inclined peripheral wall 15 adjacent to the inner peripheral surface of the upright side wall 9 on the nozzle portion 8 side and the inner peripheral upper end of the inclined peripheral wall 15. It is formed into a truncated cone shape from the top wall 16.

As shown in FIGS. 1 to 3, the upper lid A2 includes a disk-shaped top wall 20, a circumferential sloped sidewall 21 whose diameter is expanded downward from the periphery of the top wall 20, and a lower end of the sloped sidewall 21. A side circumferential wall 22 is formed of basic resin B, and an opening 23 is formed in the inclined side wall 21 on the side facing the tip opening 8a of the nozzle part 8 when the lid is closed. An upper lid elastic portion C2 is formed of elastic resin C and covers the outer circumferential surface portion of 21 and closes the opening 23.

The side peripheral wall 22 is provided with a hinge part A3 at a predetermined position on the lower end of the outer periphery, a knob part 24 on the opposite side of the hinge part A3 for hanging a finger, etc. At the same time, an engaging part 25 is provided which fits into the lid engaging part 11 of the cap body A1 to maintain the lid closed, and the inner peripheral side of the inclined side wall 21 where the opening 23 is located includes the engaging part 25. A notch 26 is cut out along the circumferential surface from top to bottom.

The upper lid elastic portion C2 forms a circumferential sloped outer peripheral wall 30 that covers the outer peripheral surface of the sloped side wall 21, and the inner peripheral surface appearing within the opening 23 of the sloped outer peripheral wall 30 is connected to the nozzle portion 8 when the lid is closed. The seal portion 31 is in close contact with and seals the tip opening 8a.

Next, the usage mode and effects of this embodiment will be explained.
The hinge cap A of this embodiment is integrally molded by two-color molding with the basic resin B and the elastic resin C, with the cap body A1 and the upper lid A2 opened via the hinge part A3.

When the hinge cap A of this embodiment is molded using the two-color molding technique (core back), the upper lid A2 is formed into a circumferential inclined outer peripheral wall 30 in which the upper lid elastic portion C2 covers the outer peripheral surface of the inclined side wall 21. Therefore, when the core is core-backed to the cavity and filled with elastic resin C, the elastic resin C can be smoothly and stably filled from the opening 23 side, and two-color molding technology (core-back ) is a simple and convenient mold structure.

After the hinge cap A is formed, it is bent using the hinge portion A3 as a fulcrum, and the upper lid A2 is rotated in the closing direction relative to the cap body A1 to close the lid.
When the lid is closed, as shown in FIGS. 1 and 3, the upper lid A2 covers the upper part of the outer cylindrical wall 5 of the cap body A1, and the engaging part 25 provided on the inner periphery of the side peripheral wall 22 of the upper lid A2 It fits into the lid engaging portion 11 on the outer periphery of the upper wall 6 of the cap body A1 to maintain the closed lid state.
When the lid is closed, the seal portion 31 on the inner peripheral surface of the inclined outer peripheral wall 30 of the upper lid elastic portion C2 in the opening 23 of the inclined side wall 21 of the upper lid A2 is in close contact with the tip opening 8a of the nozzle portion 8 of the cap body A1. It deforms elastically and seals the nozzle part 8.

The hinge cap A in the closed state is attached by screwing the outer cylindrical wall 5 of the cap body A1 to the opening 1 of the container body D filled with the liquid content.
In this embodiment, the male screw 2 screwed into the mouth 1 of the container main body D and the female screw 10 screwed into the outer cylindrical wall 5 of the cap main body A1 are screwed together. A protrusion may be provided on the outer periphery of the container 1, an engaging portion that fits into the protrusion may be provided on the inner periphery of the outer cylindrical wall 5, and the hinge cap A may be attached to the container body D by plugging.

In the container to which the hinge cap A of this embodiment is attached, when the lid is closed, the tip opening 8a of the nozzle portion 8 of the cap body A1 is connected to the seal portion 31 on the inner peripheral surface of the inclined outer peripheral wall 30 of the upper lid elastic portion C2 of the upper lid A2. The elasticity of the upper lid elastic part C2 increases the adhesion force and seals the container, so even if the container is tipped over, the liquid content will not leak out from the tip opening 8a of the nozzle part 8 and contaminate the outside.
In addition, since the upper lid elastic part C2 made of elastic resin C is covered with the inclined side wall 21 of the upper lid A2, even if the container is dropped, the upper lid elastic part C2 absorbs the impact, and the side peripheral wall 22 is attached to the cap body A1. On the other hand, it is possible to maintain the closed state of the upper cover A2 and maintain the seal by the seal portion 31 without causing the upper cover A2 to shift laterally.

When using the container to which the hinge cap A of this embodiment is attached, when you put your finger on the knob 24 of the top lid A2 and lift it up, the engaging part 25 of the top lid A2 and the lid engaging part 11 of the cap body A1 fit together. The upper lid A2 is opened by rotating about the hinge portion A3.
When the lid is opened, the close contact between the seal portion 31 on the inner peripheral surface of the inclined outer peripheral wall 30 of the upper lid A2 and the tip opening 8a of the nozzle portion 8 of the cap body A1 is released, and the nozzle portion 8 is opened.

As shown in FIG. 4, the container body D equipped with the hinge cap A tilts the nozzle portion 8 of the cap body A1 downward to move the liquid content from the container body D to the inside of the cap body A1.
Then, even if the liquid content that has moved into the cap body A1 flows into the nozzle part 8 through the opening 7a of the cylindrical wall 7, it will not flow out from the tip opening 8a of the nozzle part 8 as it is. .

Next, when the pressing portion C1 of the cap body A1 is pressed from the outside toward the inside, the inside of the container is pressurized, and the liquid content is forced out from within the nozzle portion 8 and discharged from the tip opening 8a.
When pressing the pressing part C1, the upright side wall 9 formed of the basic resin B on the nozzle part 8 side does not deform with respect to the deforming pressing part C1, so the inclined peripheral wall 15 of the part adjacent to the upright side wall 9 also deforms. Since it does not deform, it serves as a fulcrum, and the pressing portion C1 can be easily pushed toward the upright side wall 9 from the side opposite to the upright side wall 9, and the deformation direction is stabilized.

When the pressure of the pressing part C1 is released, the pressurization inside the container is stopped, and the discharge of the content liquid is also stopped.
By repeatedly pressing and releasing the pressing portion C1, the liquid content can be discharged drop by drop.
When the pressure of the pressing part C1 is released, the inside of the container becomes negative pressure due to the restoration of the pressing part C1, and the content liquid is sucked inward from the opening 7a of the cylindrical wall 7 and the inside of the nozzle part 8. The content liquid adhering to the cylindrical wall 7 is also sucked into the nozzle part 8, and when the pressing part C1 is restored and the negative pressure is released, the content liquid is drawn into the opening 7a of the cylindrical wall 7 and the nozzle part 8 again. Since it flows in and is sealed, the liquid inside will not drip outside.
Further, the inclined peripheral wall 15 of the portion of the pressing portion C1 adjacent to the undeformed upright side wall 9 serves as a fulcrum and restores the deformed pressing portion C1 to the side opposite to the upright side wall 9, so that the elastic deformation is stabilized.

In the hinge cap A of this embodiment, the pressing part C1 is made of elastic resin C that can be elastically deformed, so compared to the conventional case where the same resin is made thin and deformed by pressing. It is easily deformed, the pressing force can be weakened, the pressing force can be stabilized, and the restoring force is also stable, so it will not return to its original state after being pressed.

In the hinge cap A of this embodiment, a specific part is made of an elastic resin C that can be elastically deformed, and the remaining main part is made of a basic resin B. Since both resins can be integrally molded, after being molded with separate resins, There is no need to assemble it, and it does not come off after assembly, so productivity is good, and when pressing the pressing part C1 of the integrally molded elastic resin C, the feeling of use and the stability of elastic deformation are good.

(Example 2)
Next, a second embodiment in which the configuration of the cap main body A1 of the first embodiment is changed will be described with reference to the drawings.
Hereinafter, the same components as in the first embodiment will be given the same reference numerals, and the changed parts in the cap body A1 will be given new reference numerals, and the explanation will focus on the differences.

In FIG. 5, Aa is a hinge cap attached to the container body D, Aa1 is a cap body attached to the container body D, and A2 is an upper lid connected to the cap body Aa1 via a hinge part A3.

As shown in FIGS. 5 and 6, the cap body Aa1 includes an outer circumferential cylindrical wall 5 as an attachment part attached to the outer periphery of the mouth part 1 of the container body D, a ring-shaped upper wall 6, and a ring-shaped upper wall 6. The inner cylinder 35 is suspended from the inner edge, and the inner cylinder 35 is inclined inward from the inner edge of the upper wall 6, and when viewed from above, the highest position is at 90° to either the left or right (the right side in the figure) from the hinge portion A3 side. An inclined cylindrical wall 36 formed with a cylindrical wall so that the top end 36b is the lowest and the bottom upper end 36c is the lowest on the opposite side (left side in the figure), and on the top end 36b side of the slanted cylindrical wall 36, A nozzle part 8 extending through an opening 36a is connected to the inner periphery of the upper end of the inclined cylindrical wall 36, and a ring-shaped inclined surface is formed such that the nozzle part 8 side is higher and the opposite side to the nozzle part 8 is a lower inclined surface. The wall 37 is made of basic resin B, and the truncated cone-shaped pressing portion Ca1 is made of elastic resin C so as to close the inside of the inclined upper wall 37.

As shown in FIGS. 6 and 7(a), the pressing portion Ca1 has a peripheral wall portion 40 that extends inwardly so that the nozzle portion 8 side of the inclined upper wall 37 is higher and the side opposite to the nozzle portion 8 is lower. and a top wall 41 which extends horizontally with the nozzle part 8 side of the peripheral wall 40 as a continuous part 41a and is formed in a disc shape with a diameter smaller than the inner diameter of the peripheral wall 40; and a cylindrical side wall portion 42 that is arranged in a slanted manner so as to close the space between the inner edge of the cylinder and the inner edge of the cylinder.
In this embodiment, the upper surface of the ceiling wall 41 is formed to be higher than the upper end of the tip opening 8a of the nozzle section 8.

Here, since the inclination of the side wall 42 with respect to the horizontal plane is set to be steeper than the inclination of the peripheral wall 40 with respect to the horizontal plane, the lower end of the side wall 42 on the opposite side to the nozzle part 8 and the upper end of the peripheral wall 40 A stepped portion 43 is formed in between.
Further, in this embodiment, the top wall 41, the side wall portion 42, and the peripheral wall portion 40 are formed such that the wall thicknesses of the top wall 41>side wall portion 42>peripheral wall portion 40 are satisfied.

Next, the usage mode and effects of this embodiment will be explained.
Similar to the first embodiment, the hinge cap Aa of this embodiment is made of basic resin B and elastic resin C by two-color molding with the cap body Aa1 and the upper lid A2 opened via the hinge part A3. integrally formed.

After the hinge cap Aa is formed, it is bent using the hinge portion A3 as a fulcrum, and the upper lid A2 is rotated in the closing direction relative to the cap body Aa1 to close the lid.
When the lid is closed, the upper lid A2 covers the upper part of the cap body Aa1 from the outer circumferential cylinder wall 5 to maintain the closed state.
Further, due to the upper lid elastic portion C2 of the upper lid A2, the seal portion 31 on the inner peripheral surface of the inclined outer peripheral wall 30 of the upper lid elastic portion C2 is brought into close contact with the tip opening 8a of the nozzle portion 8 of the cap main body Aa1, and is elastically deformed. The upper lid elastic portion C2 is sealed to prevent the contents from leaking outside, and the upper lid elastic portion C2 is covered with the inclined side wall 21 of the upper lid A2, so even if the container is dropped, the upper lid elastic portion C2 will not be damaged. The shock is absorbed and the closed state of the upper cover A2 is maintained.

When using a container equipped with the hinge cap Aa of this embodiment, first open the top lid A2, open the nozzle part 8 of the cap body Aa1, and then tilt the nozzle part 8 of the cap body Aa1 downward. Next, when the pressing part Ca1 of the cap body Aa1 is pressed from the outside toward the inside, the inside of the container is pressurized, and the liquid content is forced out from inside the nozzle part 8 and discharged from the tip opening 8a.

When pressing the pressing part Ca1, if you put your finger on the top surface of the top wall 41 and push it in, the wall thickness of the peripheral wall part 40 is thinner than that of the top wall 41 and the side wall part 42, so the peripheral wall part 40 will be smaller than the other parts. Transform first.
Then, as shown in FIG. 7(b), before the top wall 41 deforms the continuous portion 41a side with the peripheral wall 40, the side wall 42 has a larger slope than the peripheral wall 40, so the side wall The stepped portion 43 formed between the lower end of the portion 42 and the upper end of the peripheral wall portion 40 bends the side opposite to the nozzle portion 8, so that the top wall 41 is bent opposite to the nozzle portion 8 with the continuous portion 41a as a fulcrum. The side is pushed in.

Therefore, the ceiling wall 41 is pushed in using the continuous portion 41a side as a fulcrum due to the bending of the stepped portion 43, thereby stabilizing the deformation direction, and moving the peripheral wall portion 40, then the side wall portion 42, and finally the side wall portion 42. , and the top wall 41, the order of deformation can be controlled based on the ease of deformation depending on the wall thickness, so that the pressing portion Ca1 can control elastic deformation when pressed.

Next, when the pressure of the pressing part Ca1 is released, the pressurization inside the container is stopped, and the discharge of the content liquid is also stopped.
By repeating the pressing and releasing of the pressing part Ca1, the content liquid can be discharged drop by drop.
When the pressure of the pressing part Ca1 is released, the inside of the container becomes negative pressure due to the restoration of the pressing part Ca1, and the liquid content is sucked inward from the opening 36a of the inclined cylindrical wall 36 and the inside of the nozzle part 8.

In this embodiment, the pressing portion Ca1 also controls recovery from elastic deformation in the opposite order of the ease of elastic deformation due to the difference in wall thickness of the top wall 41, side wall portion 42, and peripheral wall portion 40. Therefore, the pressing portion Ca1 is stably restored from the elastic deformation caused by the pressing.
Furthermore, since the top surface of the top wall 41 is higher than the top end of the tip opening 8a of the nozzle section 8, there is a risk that your fingers will touch the nozzle section 8 when you hang your fingers on the top surface of the top wall 41 and push in. do not have.

In the hinge cap of the present invention, the pressing part of the cap body and the sealing part of the top lid are made of elastic resin, so that the pressing part can easily be elastically deformed when pressed, and the nozzle part can be reliably sealed when the lid is closed. Since it can prevent liquid leakage, it is suitable as a cap for containers that require a hygienic usage environment, and for containers filled with liquid foods such as chili oil, which discharge the contents in small quantities, and liquid medicines such as mouthwash. be.

A, Aa Hinge cap A1, Aa1 Cap body A2 Upper lid A3 Hinge part B Basic resin C Elastic resin C1, Ca1 Pressing part C2 Upper lid elastic part D Container body θ Angle 1 Mouth part 2 Male thread 5 Outer cylinder wall (installation part)
6 Upper wall 7 Cylindrical wall 7a, 36a Opening 8 Nozzle portion 8a Tip opening 9 Upright side wall 10 Female thread 11 Lid engaging portion 15 Inclined peripheral wall 16, 41 Top wall 20 Top wall 21 Inclined side wall 22 Side peripheral wall 23 Opening
24 Knob portion 25 Engagement portion 26 Notch portion 30 Inclined outer peripheral wall 31 Seal portion
35 Inner cylinder 36 Inclined cylindrical wall 36b Top end 36c Bottom upper end 37 Inclined upper wall (inclined surface)
40 Peripheral wall portion 41a Continuous portion 42 Side wall portion 43 Step portion

Claims (7)

A hinged cap comprising a cap body attached to a container body and an upper lid attached to the cap body via a hinge part,
The cap body includes a mounting part that is attached to the mouth of the container body, a cylindrical wall formed on the top of the mounting part, a pressing part that closes the inside of the upper end of the cylindrical wall, and a part that presses when the pressing part applies pressure. , a nozzle portion for discharging the content liquid from the cylindrical wall,
The upper lid has a seal portion whose inner circumferential surface comes into close contact with the tip opening of the nozzle portion when the lid is closed;
A hinge cap characterized in that the pressing part and the sealing part are integrally molded from an elastic resin that can be elastically deformed. The cap body has an upright side wall that stands on the nozzle side at the upper end of the cylindrical wall,
The pressing part is characterized by having an inclined peripheral wall which is inclined inward from the upper end of the cylindrical wall and whose nozzle part side is adjacent to the inner peripheral surface of the upright side wall, and a ceiling wall which closes the inner peripheral upper end of the inclined peripheral wall. The hinge cap according to claim 1. The cap body has an inclined cylindrical wall in which the nozzle side of the cylindrical wall is higher than the side opposite to the nozzle part, and a ring-shaped inclined surface formed on the inner periphery of the upper end of the inclined cylindrical wall,
The pressing part includes a peripheral wall part that extends inwardly from the inclined surface, a top wall that extends horizontally from the nozzle part side of the peripheral wall part to a side opposite to the nozzle part side, and an outer edge of the top wall and an inner edge of the peripheral wall part. 2. The hinge cap according to claim 1, further comprising a side wall portion that closes a space between the two and a stepped portion formed between the side wall portion and the peripheral wall portion. 4. The hinge cap according to claim 3, wherein the pressing portion is formed such that the thickness of the top wall, side wall, and peripheral wall is such that the thickness of the top wall>the side wall>the peripheral wall. The upper lid has a top wall, a sloped sidewall whose diameter expands downward from the periphery of the top wall, and a side peripheral wall that hangs down from the lower end of the sloped sidewall,
The inclined side wall has an opening formed on the nozzle part side, and an upper lid elastic part that circumferentially covers the outer peripheral surface part and closes the opening,
The hinge cap according to any one of claims 1 to 4, wherein the inner circumferential surface of the upper lid elastic portion inside the opening serves as a sealing portion. The hinge cap according to any one of claims 1 to 4, wherein the pressing part and the sealing part are integrally molded by two-color molding. The hinge cap according to claim 5, wherein the pressing part and the sealing part are integrally molded by two-color molding.

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