JP2023108436A - Sealing cap of container - Google Patents

Abstract

To provide a sealing cap of a container openable by only pushing down an elevation member, and capable of preventing pushing-down of the elevation member, when necessary.SOLUTION: A sealing cap C seals a mouth cylindrical part 1 of a container body B, and comprises: a cap body D covering the mouth cylindrical part 1; an elastic sealing member E axially extending toward inside the mouth cylindrical part 1 from the cap body D and radially expanding to engage with the mouth cylindrical part 1; an elevation member F axially penetrating through the cap body D, axially extending the elastic sealing member E to disengage it from the mouth cylindrical part 1; and a lock member G slidably attached to the cap body D and preventing pushing-down of the elevation member F.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a container sealing cap, and more particularly to a sealing cap with a locking mechanism.

2. Description of the Related Art Various proposals have hitherto been made for sealing caps for storing contents in a container and sealing the contents to prevent the contents from leaking from the mouth of the container and to prevent air from entering the container from the mouth.

As an example of such a sealing cap, an inner cylinder made of a flexible synthetic resin material is used, in which an engagement stopper is protruded and a suitable number of loose fitting recesses are recessed in the inner peripheral wall at equal intervals. In addition to being integrally formed in the center of the main body, a flange accommodating portion is formed near the outer periphery of the upper surface of the inner cylinder, and a press flange is provided on the upper surface to engage and disengage the engagement stopper and the loose fitting recess. A rotating cylinder having a substantially open-ended cylindrical shape, in which a detachable press bulging portion is protruded from the outer periphery, is rotatably inserted into the inner cylinder, and the mouth of the container is placed below the inner cylinder. A safety cap that can be fitted and detached has been conventionally known (see, for example, Patent Document 1).

Also, in sealing closures, particularly for containers such as jars, bottles, cans, etc., which have a packing pressed against the inner wall of the container, the sealing pressure is automatically generated by elastic action and applied to the operating part against the spring action. Sealing plugs are also known from the prior art with a spring-elastic sealing part operatively connected to the operating part so as to be relieved by the applied pressure (see, for example, US Pat.

Japanese Utility Model Publication No. 55-5493 Japanese Patent Publication No. 54-14551

With the safety cap described in Patent Document 1, there is no risk that an infant or the like will remove it. However, there was a problem that it took a lot of time and effort.

In addition, in the sealing plug described in Patent Document 2, the sealing plug can be easily opened by simply pressing the operating part, but there is a problem that the sealing plug opens if the operating part is pressed carelessly. rice field.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, and to provide a sealing cap for a container that can be opened simply by pushing down an elevating member and that can prevent the elevating member from being pushed down as necessary. and

In order to solve the above problems, the present invention provides a sealing cap for a container, which seals the mouth portion of a container body, comprising: a cap body covering the mouth portion; and an elastic sealing member that extends in the axial direction and expands in the radial direction to engage with the mouth portion, and an elastic seal member that penetrates the cap body in the axial direction and extends in the axial direction when the cap body is pushed down to extend in the axial direction and engage with the mouth portion. and a locking member that is slidably mounted on the cap body and prevents the lifting member from being pushed down.

Further, as an embodiment of the container sealing cap, the elevating member includes a pressing portion provided by opening the upper surface of the cap body, a connecting portion connected to the pressing portion and connected to the tip portion of the elastic sealing member, and the pressing portion. an elastic biasing portion that biases the cap body upward; and an upper cover that holds a lock member attached to the main body cover. The lifting member has a restricting projection projecting in the radial direction, and the locking member is a dial portion rotatably mounted on the cap body. and a central hole formed in the center of the dial portion through which the elevating member penetrates, and a restricting concave portion formed radially from the central hole and into which the restricting convex piece can be fitted. Further, the cap body has a latch mechanism that holds the lowered state of the elevator member when the pressing portion of the elevator member is pushed down for the first time, and releases the lowered state of the elevator member when the pushing portion is pushed down again. to adopt.

By adopting the above configuration, the sealing cap for a container of the present invention can be opened by pushing down the elevating member so that the elastic sealing member extends in the axial direction and disengages from the mouth tube portion of the container body. In addition, it is possible to prevent the lifting member from being pushed down simply by sliding the lock member relative to the cap body.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional perspective view which shows the closed state of the beverage container which is an Example of this invention. 1 is an exploded perspective view showing a sealing cap that is an embodiment of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the main-body cover and inner plug part of the sealing cap which is an Example of this invention, (a) is the perspective view seen from the upper surface, (b) is the perspective view seen from the lower surface. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the upper cover of the sealing cap which is an Example of this invention, (a) is the perspective view seen from the upper surface, (b) is the perspective view seen from the lower surface. FIG. 4 is a half-sectional view showing an elastic sealing member of a sealing cap that is an embodiment of the present invention; It is a figure which shows the press part of the sealing cap which is an Example of this invention, (a) is the perspective view seen from the upper surface, (b) is the perspective view seen from the lower surface. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the connection part of the sealing cap which is an Example of this invention, (a) is the perspective view seen from the upper surface, (b) is the perspective view seen from the lower surface. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the raising/lowering member of the sealing cap which is an Example of this invention, (a) is a longitudinal cross-sectional perspective view seen from the upper surface, (b) is a longitudinal cross-sectional perspective view seen from the lower surface. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the locking member of the sealing cap which is an Example of this invention, (a) is the perspective view seen from the upper surface, (b) is the perspective view seen from the lower surface. 1 is a longitudinal cross-sectional perspective view showing a released state of a beverage container that is an embodiment of the present invention; FIG. FIG. 2 is a diagram showing a sealed state of a beverage container that is an embodiment of the present invention, where (a) is a cross-sectional view taken along line X1-X1 in (b), and (b) is a side cross-sectional view. FIG. 2A is a cross-sectional view taken along line X2-X2 in FIG. 1B, and FIG. 1B is a side cross-sectional view.

The sealing cap for a container according to the invention will now be described with reference to the drawings of an embodiment embodied as a sealing cap for a beverage container.
In the following description, referring to FIG. 1, the vertical direction is defined as "axial direction" or "vertical direction", and the horizontal direction is defined as "radial direction".

In FIG. 1, A is a sealed container for storing contents such as beverages, B is a container body for taking in and out the contents from the mouth part 1, and C is a sealing cap for closing the mouth part 1 of the container body B.

As shown in FIG. 1, the container body B has a bottle shape as a whole, comprising a cylindrical neck portion 1 with an open top, a shoulder portion 2 gradually increasing in diameter from the lower end of the neck portion 1, and a It has a trunk portion 3 that hangs down from the lower end of the portion 2 and a bottom portion 4 that seals the lower end of the trunk portion 3 .
Further, the mouth tube portion 1 includes an upper end surface 5 formed at the upper end, an inclined surface 6 inclined inwardly from the upper end surface 5, a locking surface 7 having an enlarged diameter from the lower end of the inclined surface 6, and an upper and an outer peripheral surface 8 that hangs down from the end surface 5 toward the outer peripheral side.

As shown in FIGS. 1 and 2, the sealing cap C includes a cap body D that covers the mouth tube portion 1 of the container body B, and an axial direction extending from the cap body D toward the mouth tube portion 1. The elastic sealing member E expands in the direction to engage with the locking surface 7 of the mouthpiece 1, and penetrates the cap main body D in the axial direction. A lifting member F for releasing engagement with the locking surface 7 of the portion 1 and a locking member G slidably mounted on the cap body D are provided.

As shown in FIGS. 1 to 4, the cap main body D includes a main body cover D1 that covers the upper portion and the outer peripheral surface 8 of the mouth tube portion 1 of the container body B, and is inserted inside the mouth tube portion 1 from the main body cover D1. It has an inner plug portion D2 and an upper cover D3 that rotatably holds a lock member G attached to the main body cover D1.

As shown in FIGS. 1 to 3, the main body cover D1 includes a ring-shaped base wall portion 10 that covers the upper portion of the mouthpiece portion 1, and a base wall portion 10 that hangs down from the outer edge of the base wall portion 10. and a guide stepped portion 12 recessed in the upper end surface of the outer cylindrical portion 11 .
The base wall portion 10 is formed with four locking holes 13 and two contact grooves 14 for mounting the upper cover D3.

The inner plug portion D2 includes a cylindrical peripheral wall portion 15 hanging down from the inner edge of the base wall portion 10, a bottom wall portion 16 sealing the lower end of the peripheral wall portion 15, and concentric with the peripheral wall portion 15 from the bottom wall portion 16. and an inner cylindrical portion 17 that is erected.

A plurality of mounting projections 18 (eight locations in the embodiment) for mounting the elastic seal member E are formed along the circumference of the outer peripheral surface of the peripheral wall portion 15 .
The bottom wall portion 16 is formed with a pair of connecting wall through-holes 19 through which the connecting wall 51 of the elevating member F (to be described later) penetrates.

As shown in FIGS. 1, 2 and 4, the upper cover D3 includes an outer peripheral wall 20 having the same diameter as the outer periphery of the outer cylindrical portion 11 of the main body cover D1, and extending inward from the upper end of the outer peripheral wall 20. an inner peripheral wall 22 that hangs down from the inner edge of the top wall 21 toward the contact groove 14 of the base wall portion 10 of the main body cover D1 so that the elevating member F can move up and down; a plurality of engaging legs 23 (four in the embodiment) provided vertically from the top wall 21 between the inner peripheral wall 22 and having engaging hooks 24 that engage with the locking holes 13 of the base wall 10; It is configured.

As shown in FIG. 4, the ceiling wall 21 has a click pin 25 that abuts on a click spring 67, which will be described later. A notch portion 26 is formed, and a housing recess 27 is formed on the back surface of the top wall 21 continuously from the notch portion 26 .

As shown in FIGS. 1, 2 and 5, the elastic seal member E includes a ring-shaped flange portion 30 formed on the upper portion, and an elastic seal member E suspended from the inner edge of the flange portion 30. a tubular mounting portion 31 attached to the lower end of the tubular mounting portion 31, a bent tubular portion 32 extending vertically from the lower end of the tubular mounting portion 31 and having an intermediate portion expanding in the radial direction, a lower wall portion 33 sealing the lower end of the bent tubular portion 32; It has
The elastic sealing member E is, for example, a thermosetting elastomer. It is also a resin-based elastomer made of urethane, silicone, or the like.

A contact ring 34 is formed on the outer peripheral side of the lower surface of the flange portion 30 to contact the upper end surface 5 of the mouth tube portion 1, and the attachment tube portion 31 has a plurality of attachment rings into which the attachment protrusions 18 of the inner plug portion D2 are fitted. Concave portions 35 (eight locations in the embodiment) are formed on the inner peripheral surface, and a seal portion 36 is formed at the lower end of the outer periphery to contact the inclined surface 6 of the mouth tube portion 1. A fitting recess 37 that fits with the lifting member F is formed inside.

As shown in FIGS. 1 and 8, the lifting member F has an upper pressing portion F1 that is pushed down by the user and a lower connecting portion F2 that extends the elastic sealing member E in the axial direction. are intervening and connected to

As shown in FIGS. 1 and 6, the pressing portion F1 includes a pressing plate 40 that is pressed down along the inner periphery of the inner peripheral wall 22 of the upper cover D3, an elevating cylinder 41 that hangs down from the lower surface of the pressing plate 40, and an elevating mechanism. A pair of regulating protrusions 42 projecting radially from the outer periphery of the cylinder 41 , a spring receiving cylinder 43 hanging down from the lower surface of the pressing plate 40 inside the elevating cylinder 41 , and a spring receiving cylinder 43 hanging down from the center of the pressing plate 40 . , a latch insertion arm 44 having a wedge 45 at its distal end for engaging the latch mechanism 70 .

The elevating cylinder 41 has engaging windows 46 opened at two locations, engaging surfaces 47 formed at the lower ends of the engaging windows 46, thick surfaces 48 formed on both side surfaces of the engaging windows 46, It has
The pressing portion F1 is pushed upward from the cap main body D by a compression coil spring 49 which is an elastic biasing portion mounted between the outer circumference of the spring receiving tube 43 and the outer circumference of the inner cylindrical portion 17 of the inner plug portion D2. are being forced. The compression coil spring 49 abuts against the lower surface of the pressing plate 40 and the upper surface of the bottom wall portion 16 and biases the pressing plate 40 and the fitting wall 50 in a direction to separate them. In some cases, the portion where the compression coil spring 49 contacts the pressing plate 40 or the bottom wall portion 16 is omitted.

As shown in FIGS. 1, 7, and 8, the connecting portion F2 includes a fitting wall 50 that fits into a fitting recess 37 formed in the lower wall portion 33 of the elastic seal member E, and a fitting wall 50 that extends from the fitting wall 50. A pair of standing connection walls 51, an engagement claw 52 formed at the center of the upper end of the connection wall 51 and engaged with an engagement surface 47 formed in the engagement window 46 of the pressing portion F1, and an engagement claw. A contact surface 53 formed on both sides of the connecting wall 52 and contacting the thick surface 48 of the engagement window 46, and a dividing groove formed in the axial direction between the engaging claw 52 and the contact surface 53 of the connecting wall 51. 54 and .

As shown in FIGS. 1 and 2, a ring-shaped spacer ring 56 is inserted between the peripheral wall portion 15 of the inner plug portion D2 and the inner cylindrical portion 17 in order to smoothly move the connecting portion F2 up and down. The ring 56 is formed with a pair of through portions 57 through which the connecting wall 51 of the connecting portion F2 penetrates.

As shown in FIGS. 1, 2 and 9, the lock member G includes a dial portion 60 formed with a guide surface 61 which slides on the guide step portion 12 on the upper surface of the base wall portion 10 of the main body cover D1, and a dial portion 60. A central hole 62 formed in the center of the upper cover D3 through which the elevating member F penetrates; It has an engaging leg through hole 64 through which the engaging leg 23 penetrates, a spring accommodating portion 65 that accommodates the click spring 67 , and a knurl 66 that is engraved on a part of the side peripheral surface of the dial portion 60 .

Next, the mode of use and effects of this embodiment will be described with reference to the drawings.
As shown in FIG. 2, the sealing cap C includes, from above along the axial direction, an upper cover D3, a pressing portion F1 of a lifting member F, a locking member G, a compression coil spring 49, a spacer ring 56, a cap main body D, and a lifting member. The connecting portion F2 of the member F and the elastic sealing member E are assembled in this order.

In order to attach the sealing cap C assembled as described above to the mouth tube portion 1 of the container body B, as shown in FIG. It is necessary to reduce the outer diameter of the bending tube portion 32 .
For this purpose, a finger is put on the knurl 66 formed on the dial portion 60 of the lock member G, and the lock member G is rotated counterclockwise (20° in this embodiment) from the state shown in FIG. 11(a). ), the click spring 67 in the spring accommodating portion 65 is elastically deformed with respect to the click pin 25 of the upper cover D3, and the engaging leg through-hole 64 is moved from one end side to the other end side of the engaging leg 23 of the upper cover D3. , and the rotation of the lock member G stops.

Then, as shown in FIG. 12(a), the dial portion 60 of the lock member G is pressed by the rotation position of the restricting concave portion 63 matching the position of the restricting convex piece 42 of the pressing portion F1 of the lifting member F. It becomes possible to push down the portion F1.
In this state, when the pressing plate 40 of the pressing portion F1 is pressed down against the compression coil spring 49, the connection portion F2 connected to the pressing portion F1 is lowered, thereby causing the pressure plate 40 to move downward as shown in FIGS. 10 and 12(b). Then, the bending tubular portion 32 of the elastic sealing member E is stretched.

At this time, the wedge portion 45 of the latch insertion arm 44 of the pressing portion F1 engages with the latch mechanism 70 to maintain the pressed state of the pressing portion F1. can be inserted into the mouth tube portion 1 of the container body B, as shown in FIG.

In order to close the mouth portion 1 of the container body B with the sealing cap C, the pressing plate 40 of the pressing portion F1 is pushed down again, and the engagement between the latch mechanism 70 and the wedge portion 45 of the latch insertion arm 44 is released. As a result, the pressing plate 40 of the pressing portion F1 is lifted by the elastic force of the compression coil spring 49, and as shown in FIGS. It is in close contact with the locking surface 7 of the portion 1 . That is, the elastic seal member E bends in the radial direction to form the bent tubular portion 32 when the pressing plate 40 rises and contracts in the axial direction. The bent tubular portion 32 of the elastic seal member E expanded in the radial direction is brought into close contact with the locking surface 7 of the mouth tube portion 1, so that the inside of the container body B can be sealed. In addition, the bent tubular portion 32 is brought into close contact with the engagement surface 7 expanded from the lower end of the inclined surface 6 from below, so that the sealing cap C can be prevented from slipping out of the container body B. As shown in FIG.

In order to lock the pressing plate 40 of the pressing portion F1 from this state so that it cannot be pushed down, the dial portion 60 of the locking member G is rotated clockwise from the state shown in FIG. The inner click spring 67 is elastically deformed with respect to the click pin 25 of the upper cover D3, and the engaging leg through-hole 64 returns from the other end side to the one end side of the engaging leg 23 of the upper cover D3. Rotation stops.

Then, as shown in FIG. 11(a), the dial portion 60 of the lock member G shifts the rotation position of the restricting concave portion 63 from the position of the restricting convex piece 42 of the pressing portion F1 of the lifting member F. F1 cannot be pushed down, and the sealing cap C cannot be removed from the mouth tube portion 1 of the container body B.

As described above, the sealing cap C of the present embodiment is used for the sealed container A containing contents such as beverages, but is limited to the container body B having the mouth tube portion 1 with a circular cross-sectional shape. However, it is also possible to use a container body having a mouth portion with an elliptical or substantially quadrilateral cross-sectional shape. Instead of the portion 60, a sliding portion that is slidably attached to the cap body may prevent the lifting member from being pushed down.

The sealing cap of the container of the present invention can be opened by extending the elastic sealing member in the axial direction and disengaging it from the mouth tube portion of the container body simply by pushing down the lifting member. The locking member can be prevented from being pushed down simply by sliding the locking member relative to the cap body, and is particularly suitable as a sealing cap for beverage containers such as water bottles.

A sealed container B container main body C sealed cap D cap main body D1 main body cover D2 middle plug part D3 upper cover E elastic seal member F elevation member F1 pressing part F2 connecting part G lock member 1 mouth part 2 shoulder part 3 body part 4 bottom part 5 upper end surface 6 inclined surface 7 locking surface 8 outer peripheral surface 10 base wall portion 11 outer cylindrical portion 12 guide step portion 13 locking hole 14 contact groove 15 peripheral wall portion 16 bottom wall portion 17 inner cylindrical portion 18 mounting protrusion 19 connection Wall through hole 20 Outer wall 21 Ceiling wall 22 Inner wall 23 Engagement leg 24 Engagement hook 25 Click pin 26 Notch 27 Accommodating recess 30 Flange 31 Mounting cylinder 32 Bent cylinder 33 Bottom wall 34 Contact ring 35 Mounting recess 36 Seal portion 37 Fitting concave portion 40 Pressing plate 41 Elevating cylinder 42 Regulating convex piece 43 Spring receiving cylinder 44 Latch insertion arm 45 Wedge portion 46 Engaging window 47 Engaging surface 48 Thick surface 49 Compression coil spring (elastic biasing portion)
50 Fitting wall 51 Connecting wall 52 Engaging claw 53 Contact surface 54 Divided groove 56 Spacer ring 57 Penetrating part 60 Dial part 61 Guide surface 62 Central hole 63 Regulating recess 64 Engaging leg through-hole 65 Spring accommodating part 66 Knurl 67 Click spring 70 latch mechanism

Claims (6)

A sealing cap that seals the mouthpiece of the container body,
a cap body that covers the mouthpiece;
an elastic seal member axially extending from the cap body into the mouthpiece and expanding radially to engage with the mouthpiece;
an elevating member that penetrates the cap body in the axial direction and extends the elastic sealing member in the axial direction when pushed down to disengage the cap body from engagement with the mouthpiece;
a locking member that is slidably mounted on the cap body and prevents the lifting member from being pushed down;
A sealing cap for a container, comprising: The elevating member includes a pressing portion provided by opening the upper surface of the cap body, a connecting portion connected to the pressing portion and connected to the tip portion of the elastic sealing member, and an elastic biasing portion that biases the pressing portion upward from the cap body. 2. The container sealing cap of claim 1, comprising: a portion; The cap body includes a main body cover that covers the upper portion and the outer peripheral surface of the mouthpiece, an inner plug that extends from the main body cover into the mouthpiece, and an upper cover that holds a locking member attached to the body cover. 3. A container sealing cap according to claim 1 or 2, characterized in that it comprises a sealing cap. 4. The container sealing cap according to any one of claims 1 to 3, wherein the upper pressing portion and the lower connecting portion of the elevating member are connected to each other with a locking member interposed therebetween. The elevating member has a regulating convex piece that protrudes in the radial direction,
The lock member includes a dial portion that is rotatably attached to the cap main body, a central hole portion that is formed in the center of the dial portion and through which the elevating member penetrates, and a regulating convex piece formed radially from the central hole portion. The sealing cap for a container according to any one of claims 1 to 4, characterized by having a regulating recess into which the container can be fitted. The cap body has a latch mechanism for holding the lowered state of the lifting member when the pressing portion of the lifting member is pressed down for the first time, and releasing the lowered state of the lifting member when the pressing portion is pressed down again. A sealing cap for a container according to any one of 2 to 5.

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