JP5227401B2 - One-piece attachment cap that can be opened with one push - Google Patents

Description

  The present invention relates to an attachment cap that is attached to a container that contains a liquid or the like, and more particularly, to an attachment cap that can be opened with a single push.

  It is very convenient if the liquid or the like in the container can be smoothly taken out from the container containing the liquid by one-handed operation. Various cap mechanisms that can open the lid with such a one push have been proposed.

  For example, in US Pat. No. 5,730,310, particularly in FIG. 30, the pressing operation portion 5 is formed on the side surface of the case 11, and the pressing operation portion 5 is pushed in from the lateral direction so that the lid portion 12 is folded. A lid opening mechanism that rotates around the curve 21 is disclosed. According to this mechanism, as shown in FIG. 31, it is understood that the lid 12 rotates with the support 24 as a fulcrum. As the lid portion 12 rotates, the folding line 21 enters a space formed between the pressing operation portion 5 and the support portion 24. That is, the lid portion 12 is rotated by the lever action with the support portion 24 as a fulcrum.

  As another example, as shown in FIG. 1A, an attachment cap 12 is attached to the paper pack 11 in order to take out juice or the like stored in the paper pack 11. In order to open the attachment cap 12, as shown in FIG. 1B, first, the paper pack 11 is held with one hand, and the lid body 13 of the attachment cap 12 is pulled up with the other hand, whereby the cap base 14 The extraction port 15 is opened, and the juice or the like as the contents can be poured into the glass from the extraction port 15.

  In the above-described embodiment described in US Pat. No. 5,730,310, the pressing operation unit 5 is pressed by a finger, so that the pressing operation unit 5 has a certain wide area in order to improve operability. You need to be. This is a limitation that the thickness of the case 11 cannot be made too thin. In order to increase the volume of the case 11, it is preferable that the space formed between the pressing operation unit 5 and the support unit 24 is small. However, if the space is reduced, the lever ratio (the ratio of the distance from the fulcrum to the point where the force is applied divided by the distance from the fulcrum to the point of action (corresponding to the length of the lid 12)) is reduced. As 12 becomes larger, the result is that a stronger pressing force is required.

  Also, the attachment cap 12 shown in FIG. 1A requires the use of both hands to open, leaving inconvenience. Furthermore, when taking out the liquid, air tends to flow backward from the extraction port 15 into the paper pack 11, so that there is an inconvenience that the liquid cannot be taken out smoothly.

  The present invention has been invented in order to solve the above-described problems, and provides an attachment cap that can smoothly take out a container such as a liquid from a container. That is, the present invention provides a cap mechanism that can open the lid with a single push, and can open the lid with a small force, and further provides a thin attachment cap.

  Therefore, the attachment cap according to the present invention includes a cap base, a hinge part connected to the cap base, and a lid connected to the hinge part. The cap base has an extraction port for taking out the contents. The hinge portion includes a pressing operation portion that is rotatably connected to one end of the cap base, and a correction arm portion that is formed in parallel with the pressing operation portion with a gap. The lid body has a stopper portion that is pivotably connected to the other end of the pressing operation portion and the correction arm portion and seals the extraction port. In the attachment cap having such a configuration, the cap base forms a receiving area capable of receiving the pressing operation portion on the upper surface which is the surface opposite to the mounting surface, and the bottom surface of the receiving area is the correction arm portion. Is formed lower than the surface abutting on the upper surface, and when the pushing operation unit is pushed out into the receiving area in a state where the plug portion seals the extraction port, the lid body rotates to open the plug portion from the extraction port.

  Further, the attachment cap according to the present invention includes a vent hole separately from the extraction port provided in the cap base in addition to the above-described configuration, and the lid body has a plug portion and a vent hole that fit into the extraction port and the vent hole. Each has a stopper.

  According to the present invention, since the operation region of the pressing operation unit can be formed in a shallow region, it is possible to provide a thin attachment cap capable of opening the lid with a single push. Moreover, since the pressing operation part can be pushed from the upper part of the attachment cap, a relatively large force can be applied to the pressing operation part. Thereby, it is possible to sufficiently rotate the lid. Furthermore, since the attachment cap according to the present invention has a vent hole, the contents in the container can be taken out smoothly.

Fig. 5 shows a state in which a conventional attachment cap is attached to a paper pack with the lid closed. The figure for demonstrating operation which opens the lid | cover of the conventional attachment cap is shown. The figure for demonstrating schematically the operation | movement which opens the cover of the attachment cap which concerns on one Example of this invention is shown. The perspective view which shows the attachment cap of the closed state which concerns on one Example of this invention is shown. The perspective view for demonstrating the lid opening operation | movement of the attachment cap which concerns on one Example of this invention is shown. The perspective view which shows the state which the attachment cap based on one Example of this invention opened completely is shown. It is a top view at the time of shaping | molding of the attachment cap which concerns on one Example of this invention. The side view at the time of shaping | molding of the attachment cap which concerns on one Example of this invention is shown. The bottom view at the time of shaping | molding of the attachment cap which concerns on one Example of this invention is shown. 4A is a cross-sectional view of the attachment cap according to an embodiment of the present invention, taken along line AA in FIG. 4A. The top view of the closed state of the attachment cap concerning one example of the present invention is shown. The side view of the closed state of the attachment cap concerning one example of the present invention is shown. The bottom view of the closed state of the attachment cap concerning one example of the present invention is shown. FIG. 6B is a cross-sectional view of the attachment cap according to one embodiment of the present invention, taken along line BB in FIG. 6A. Sectional drawing of the attachment cap for demonstrating the state which the cover body closed is shown. Sectional drawing of the attachment cap for demonstrating the state which the cover body advanced and the hook removed is shown. Sectional drawing of the attachment cap for demonstrating the state which a cover body rotates is shown. Sectional drawing for demonstrating the state which the cover body opened completely is shown. Sectional drawing for demonstrating the holding | maintenance state of the cover body in the state in which the cover body stood completely is shown. FIG. 6B is a cross-sectional view taken along the line CC of FIG. 6A of the attachment cap according to one embodiment of the present invention. The top view at the time of shaping | molding of the attachment cap which concerns on the other Example of this invention is shown. FIG. 12 shows a DD cross-sectional view of FIG. 11 of an attachment cap according to another embodiment of the present invention. The top view of the closed state of the attachment cap which concerns on the other Example of this invention is shown. FIG. 13 is a cross-sectional view of the attachment cap according to another embodiment of the present invention taken along line EE of FIG. 12. The side view of the closed state of the attachment cap concerning other examples of the present invention is shown.

Explanation of symbols

21 Container 22, 31, 44 Lid 23, 33, 48 Press operation part 25, 37, 45, 101 Extraction port 26, 49 Vent 30, 30, 100 Attachment cap 32, 42 Cap base 36, 46 Cylindrical wall 39,57 Vent plug part 43 Hinge part 50 Correction arm part 52, 53, 54, 55 Bending part 56, 102 Plug part 58 Receiving area

  As an embodiment according to the present invention, an attachment cap attached to a paper pack will be described with reference to the drawings. The attachment cap can be manufactured by injection molding using polypropylene, but may be formed integrally with the container. The attachment cap will be described below on the assumption that it is attached to a paper pack, but it may be attached to a pack other than paper, for example, a synthetic resin pack. Furthermore, it should be noted that the attachment cap shown in the drawings is simplified in detail for ease of explanation, and its dimensions are different from the actual attachment cap. In the following description, the description will be made on the assumption that it is attached to a container containing a liquid or the like, but the attachment cap according to the present invention can also be attached to a container containing powder or granular materials. There may be one attachment cap extraction port or a plurality of extraction ports. The same reference numbers are used for convenience in the same parts throughout the drawings.

  FIG. 2 is a perspective view for schematically explaining an operation of opening the lid 22 in a state in which the attachment cap 20 according to the present invention is attached to the paper pack 21. When the pressing operation portion 23 of the attachment cap 20 is pushed down in the state where the lid body 22 is closed, the lid body 22 rotates in the direction of the arrow 24. As a result, the extraction port 25 is opened and the vent hole 26 is also opened. Since the vent hole 26 is opened, the liquid in the paper pack 21 can be smoothly taken out from the extraction port 25.

  3A, 3B, and 3C are perspective views for schematically explaining the operation of the attachment cap 30 in the first embodiment according to the present invention. FIG. 3A is a diagram illustrating a state in which the lid 31 of the attachment cap 30 is closed. In this state, the lid 31 is folded on the cap base 32, the extraction port is closed by the lid 31, and the vent hole is also closed by the vent plug portion as will be described later.

  As shown in FIG. 3B, when the pressing operation unit 33 is pushed down in the direction of the arrow 34, the lid 31 rotates in the direction of the arrow 35, the lid 31 is detached from the cylindrical wall 36, and the extraction port 37 is opened. It is plugged. At the same time, the vent 38 is opened from the vent plug portion 39. When the pressing operation unit 33 is completely pushed down, the lid body 31 stands substantially perpendicular to the cap base 32 as shown in FIG. 3C. When the lid body 31 rises, the lid body 31 is temporarily fixed by being positioned on the rising portion 40 of the cap base 32 (described later), and the liquid in the container can be smoothly taken out from the extraction port 37.

  Next, the structure of the attachment cap according to the present invention will be described. 4A, FIG. 4B, and FIG. 4C respectively show a plan view, a side view, and a bottom view of the attachment cap 41 according to an embodiment of the present invention during molding. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4A. Hereinafter, the structure of the attachment cap 41 will be described with reference to these drawings.

  The attachment cap 41 includes a cap base 42, a hinge portion 43, and a lid 44, and is integrally molded using a synthetic resin such as polypropylene. As shown in FIG. 4A, the cap base 42 is provided with an extraction port 45 at approximately the center and a cylindrical wall 46 around the extraction port 45. The cylindrical wall 46 is preferably formed into a shape that allows the contents in the container to be easily taken out. The cap base 42 further includes a receiving region 47 at a position adjacent to the hinge portion 43, and this region forms a region lower than the surroundings. As will be described later, the receiving region 47 forms a space for receiving the pressing operation portion 48 when the pressing operation portion 48 is pushed down. A vent hole 49 is formed between the cylindrical wall 46 and the receiving area 47. The vent hole 49 only needs to allow air to pass through when the liquid or the like inside the container is taken out. Therefore, the vent hole 49 may have a small diameter and may be formed at any position of the cap base 42.

  The hinge portion 43 includes a pressing operation portion 48 and a correction arm portion 50 formed on both sides of the pressing operation portion 48 in parallel with the pressing operation portion 48, and is formed between the cap base 42 and the lid body 44. A gap 51 is provided between the pressing operation unit 48 and the correction arm unit 50, and the pressing operation unit 48 and the correction arm unit 50 form a hinge mechanism. The hinge part 43 is provided with a first bent part 52 and a second bent part 53 between the cap base 42 and the hinge part 43, and the hinge part 43 includes the first and second bent parts. 52 and 53 can be rotated as axes.

  The lid 44 is formed so as to be connected to the hinge portion 43, and is coupled to the pressing operation portion 48 via the third bent portion 54 and to the correction arm portion 50 via the fourth bent portion 55. Is done. A plug portion 56 formed at substantially the center of the lid 44 is formed so as to fit into the extraction port 45 provided in the cap base 42 and seal the extraction port 45. Further, a projecting vent plug portion 57 is provided between the pressing operation portion 48 and the plug portion 56. The lid 44 rotates around the third bent portion 54 and the fourth bent portion 55 as axes.

  6A, 6B, and 6C are a plan view, a side view, and a bottom view, respectively, of the attachment cap 41 according to an embodiment of the present invention when the attachment cap 41 is closed. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 6A. The attachment cap 41 shown in FIG. 6A rotates the hinge portion 43 of the attachment cap 41 in FIG. 4A around the first and second bent portions 52 and 53 as the axis, and the plug portion 56 of the lid body 44 and the passage cap. A state in which the pore plug portion 57 is fitted to the extraction port 45 and the vent hole 49 is shown. In FIG. 7, a receiving area 58 is formed between the pressing operation portion 48 and the cap base 42, and when the pressing operation portion 48 is pushed down, the pressing operation portion 48 moves into the receiving area 58 as will be described later. .

  8A, FIG. 8B, FIG. 8C, and FIG. 8D show that the lid 44 rotates and the extraction port 45 is completely opened from the state in which the attachment cap 41 attached on the container 80 such as a paper pack is closed. It is sectional drawing for demonstrating the operation | movement until it plugs. FIG. 8A shows a state in which the plug portion 56 of the attachment cap 41 is fitted to the extraction port 45 and plugged. In this state, as shown in FIG. 8B, when a pressing force is applied to the pressing operation portion 48 in the direction of the arrow 81, the bent portion 53 slightly moves in the direction of the arrow 82, and the pressing operation portion 48 Sinks to the receiving area 58. As a result, the plug portion 56 and the vent hole plug portion 57 move upward from the extraction port 45 and the vent hole 49, respectively, and the lid body 44 slightly moves forward in the direction of the arrow 83, and the engagement of the hook portion 84 is released. Is done.

  If the pressing force is further applied to the pressing operation unit 48 in a state where the engagement of the hook portion 84 is released, the pressing operation unit 48 further sinks to the receiving area 88 as shown in FIG. 8C. However, the forward movement of the lid body 44 is prevented by the presence of the correction arm portion 50, and the lid body 44 rotates about the bent portion 54 in the direction indicated by the arrow 85 instead of the forward movement. When the pressing operation unit 48 is further pressed down, the lid body 44 further rotates, and the lid body 44 reaches a substantially upright state as shown in FIG. 8D. In this state, the lid body 44 is placed on the rising portion 40, and the standing state is maintained.

  FIG. 9 is a cross-sectional view for explaining a holding state of the lid body 44 in a state where the pressing operation portion 48 is pushed into the receiving area 58 and the lid body 44 is completely upright. When the pressing operation portion 48 is pushed into the receiving area 58, the pressing operation portion 48 is prevented from moving in the lateral direction by the rising portion 40, while the lid body 44 is rotated by the pulling force of the correction arm portion 50, Eventually it reaches a fully upright state. When the pressing operation portion 48 is pushed down to the receiving area 58 by the pressing operation, the end portion 59 on the pressing operation portion 58 side of the bent portion 54 comes into contact with the wedge-shaped rising side surface 60 from the bottom portion 47, and on the lid body 44 side. The end 61 is located on the upper surface of the rising portion 40 of the cap base 32. In this state, the lid body 44 is restricted from moving in the lateral direction and the upward direction, and maintains a standing state on the upper surface of the rising portion 40 of the cap base 32. As a result, in a state where the pressing operation portion 48 is pressed against the rising portion 40, the lid body 44 connected to the pressing operation portion 48 maintains an upright state.

  FIG. 10 shows a cross-sectional view taken along the line CC in FIG. 6A. When the attachment cap 41 is closed, the correction arm portion 50 that is parallel to the pressing operation portion 48 is positioned on the shelf portion 62 formed on the cap base 32. As shown in the figure, the angle 63 of the correction arm 50 that contacts the cap base 32 is formed as an acute angle that is slightly smaller than 90 degrees. By forming the correction arm portion 50 in this way (in a wedge shape), the correction arm portion 50 is lifted from the shelf portion 62 when the lid body 44 is rotated in a state where the pressing operation portion 48 is pressed into the receiving area 58. Can be prevented, and the lid 44 can be rotated more smoothly.

  As described above, the attachment cap according to the first embodiment can open the extraction port by simply pressing the pressing operation portion of the attachment cap with one touch, and can easily pour the contents in the paper pack. Can be put out. In addition, since the receiving area where the pressing operation unit is pushed down can be formed shallowly, the thickness of the attachment cap can be reduced, and even if it is attached to the upper part of the paper pack, it does not become bulky. Furthermore, since the cylindrical wall is provided around the extraction port, the contents in the paper pack can be smoothly guided in a specific direction by designing the cylindrical wall into a desired shape.

  FIG. 11 shows a plan view of the second embodiment of the attachment cap 100 according to the present invention when it is molded. Moreover, FIG. 12 shows DD sectional drawing of FIG. The attachment cap 100 of the second embodiment has the same structure as the attachment cap 41 of the first embodiment except for the shapes of the extraction port 101 and the plug portion 102. The shape of the extraction port 101 does not have a cylindrical wall as in the first embodiment, and is formed so as to fit closely with the stopper 102 and to be sealed.

  FIG. 13: shows the top view of the state which the attachment cap 100 of 2nd Example based on this invention was folded. FIG. 14 is a cross-sectional view taken along line EE in FIG. As can be understood from the cross-sectional view of FIG. 14 and the side view of FIG. 15, the attachment cap of the second embodiment does not include a cylindrical wall around the extraction port 101, so the thickness of the attachment cap 100 is reduced. It can be formed thinner than the attachment cap 41 of the first embodiment.

  By attaching the attachment cap according to the present invention to a container for containing drinking water, juice or the like, the stored item can be poured out with one touch. In addition, since an attachment cap having a small thickness can be formed, it is convenient for storage, transportation, and use of a container to which the attachment cap is attached. Furthermore, the attachment cap according to the present invention can also be used for a container for storing powder and granular materials, and can be formed to have a plurality of extraction ports, all of which are related to the present invention. It is understood that it is included in the claims.

Claims (7)

In an integrally formed attachment cap attached to the container for taking out the contents in the container and capable of opening and closing the lid by a one-push operation.
A cap base having an extraction port for taking out the contents, wherein a mounting surface of the cap base is attached to the container;
A hinge part comprising a pressing operation part rotatably connected to one end of the cap base and a correction arm part formed in parallel with the pressing operation part with a gap;
A lid body rotatably connected to the other end of the pressing operation portion and the correction arm portion and having a plug portion for sealing the extraction port;
Here, the cap base forms a receiving area capable of receiving the pressing operation portion on an upper surface which is a surface opposite to the mounting surface of the cap base, and the bottom surface of the receiving area includes the correction arm portion. When the pressing operation unit is pushed out into the receiving area in a state where the plug unit seals the extraction port, the lid body is rotated and the plug unit is extracted. Open from the mouth ,
The correction arm part is formed in parallel with a gap on both sides of the pressing operation part,
In the cap base, a shelf is formed at a position higher than the bottom of the receiving area along the left and right side surfaces in the longitudinal direction of the cap base in the receiving area.
The outer surface of the portion of the straightening arm that is in contact with the cap base has an acute upright slightly smaller than 90 degrees,
The side surface of the shelf portion is inclined at substantially the same angle as the outer surface of the correction arm portion,
An integrally formed attachment cap characterized in that, during a pressing operation, the straightening arm portion is always close to the shelf portion to prevent lifting . The integrally formed attachment cap according to claim 1, further comprising a cylindrical wall around the extraction port. The integrally formed attachment cap according to claim 1, wherein the stopper has a protrusion that fits into the extraction port. The integrally formed attachment cap according to claim 1, further comprising a hook portion for fixing the lid body to the cap base body in a temporarily closed state . The integrally formed attachment cap according to claim 1, wherein the attachment cap is integrally formed of a synthetic resin. A vent hole for venting the air in the container was formed in the cap base, and a vent plug portion for closing the vent hole when the lid body was fully closed was formed in the lid body. The integrally formed attachment cap according to claim 1. The cap base is formed with a rising portion at a position higher than the bottom surface of the receiving area along the side surface on the extraction port side in the orthogonal direction of the cap base in the receiving area,
The side surface on the extraction port side is a wedge-shaped rising side surface that comes into contact with the end of the pressing operation portion in a state where the cap base is open,
When the pressing operation part is pushed down into the receiving area by a pressing operation,
While the end on the pressing operation portion side in the bent portion formed between the pressing operation portion and the lid body is in contact with the rising side surface ,
The end of the bent portion side of the bent portion is positioned on the upper surface of the rising portion of the cap base, so that the lid is maintained upright on the upper surface of the cap base. The integrally formed attachment cap according to claim 1.

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