JP2012214235A - Container cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container cap that can easily break a flat seal part without increasing an inclination angle of the lower edge of a breaking cylinder.SOLUTION: A container cap 1 includes an inner plug 3 provided with a cylinder part 31 and a cover part 33, a spout member 4 having a spout 41 and fitted onto the inner plug 3 to be depressable therefrom, and a spout cap 5 for closing the spout 41. A flat closing part 37 for sealing a flow path is breakably formed in the cylinder part 31, and a breaking cylinder 44 for breaking the flat closing part 37 along with the depression of the spout member 4 and opening the cylinder part 31 is formed in the spout member 4 communicating with the spout 41. The lower edge of the breaking cylinder 44 has a blade part 44a inclined obliquely and for breaking the flat closing part 37, and a non-blade part located at an uppermost end part, and also provided with a projecting blade part 44c formed to a part of the blade part 44a adjoined to the non-blade part and projecting downwardly.

Description

  The present invention relates to a cap used for a container for storing contents such as sauce and dressing.

  2. Description of the Related Art Conventionally, a container cap is provided with an inner stopper that closes the container mouth, a spout member that has a spout and is externally fitted so as to be able to descend onto the inner stopper, and a spout cap that closes the spout. It is known (see, for example, Patent Document 1).

  The inner plug is inserted into the container mouth to form a flow path for the contents, a shoulder projecting radially outward from the upper end edge of the cylindrical section, and a container hanging from the periphery of the shoulder It consists of a cover part that fits outside the mouth part. A strip-like portion that can be excised is formed on the upper surface of the shoulder portion, and a closing plate portion that closes the flow path is formed in the cylindrical portion so that it can be broken.

  The spout member includes a top plate portion having a spout, a cylindrical peripheral wall portion that hangs from the periphery of the top plate portion, an overhang portion that projects radially outward from the outer peripheral surface of the upper end portion of the peripheral wall portion, And a pair of wing pieces extending radially outward from the outer peripheral edge of the protruding portion. On the inner surface of the top plate portion, a broken cylinder for breaking the blocking plate portion and opening the cylindrical portion with the lowering of the spout member is formed in communication with the spout. The lower end edge of the broken cylinder is inclined obliquely and has a blade part that breaks the closing plate part.

  In addition, the protruding portion of the spout member abuts against the upper edge of the belt-shaped portion, thereby restricting the lowering of the spout member and preventing the breakable cylinder from inadvertently breaking the closing plate portion. When the contents stored in the container are taken out, after the band-shaped portion is cut from the shoulder portion, the spout member is pressed and lowered to break the clogging plate portion and open the plug.

JP 2006-341866 A

  The blocking plate portion is easily broken in proportion to an increase in the inclination angle of the lower end edge of the broken cylinder, and failure of the broken plate can be prevented. However, when the inclination angle of the lower end edge of the broken cylinder is increased, it is necessary to ensure a large downward stroke of the spout member until the breakage of the closing plate portion is completed, which increases the material cost of the container cap. In addition, an increase in size is inevitable.

  An object of this invention is to provide the cap for containers which can fracture | rupture a closing board part easily and reliably, without increasing the inclination angle of the lower end edge of a fracture | rupture cylinder in view of the above point.

  [1] In order to achieve the above object, according to the present invention, a cylindrical portion that forms a flow path of contents contained in a container and an outer periphery of the cylindrical portion are connected to each other via a shoulder portion and are externally fitted to a container mouth portion. An inner plug comprising a cover portion, a spout member that has a spout and is fitted to the inner plug so as to be able to descend, and a spout cap that closes the spout, and a cylindrical portion that closes the flow path A container in which a plate portion is formed so as to be ruptured, and a breakable cylinder for opening the cylindrical portion by breaking the closing plate portion as the spout member descends is formed on the spout member in communication with the spout In the cap for use, the lower end edge of the breakable cylinder is inclined obliquely and has a blade portion for breaking the closing plate part, and the uppermost end portion located at the uppermost position among the inclined lower end edges of the breakable cylinder Is formed with a non-blade portion for preventing breakage of the closing plate portion, and the blade portion adjacent to the non-blade portion. In part, characterized in that 突刃 portion projecting downward is formed.

  The closing plate portion is broken from one end portion corresponding to the lowermost end portion of the lower end edge of the broken tube as the broken tube is lowered. However, in the case where the conventional cutting edge portion is not provided, as the breakage of the closing plate portion approaches the other end portion, the closing plate portion gradually inclines, and the pressing force of the breaking cylinder is released to one end side, Further, the elongation occurs without breaking the other end portion of the closing plate portion. For this reason, in the conventional one, it is considered that the other end portion of the closing plate portion cannot be properly broken unless the inclination angle of the broken cylinder is increased.

  In the present invention, since the other end portion is broken relatively early by the protruding blade portion, the breakage is inhibited before the closing plate portion is tilted to such an extent that the pressing force of the broken cylinder escapes to the one end portion side. The other end portion can be broken before the other end portion is stretched and deformed, and the closing plate portion can be easily broken without increasing the inclination angle as in the prior art.

  [2] In the present invention, it is preferable that the tip of the protruding blade portion is positioned above the lowest end portion located at the lowest position among the lower end edges of the broken cylinder. If the tip of the protruding blade part breaks the closing plate part earlier than the bottom end part of the breaking cylinder, it becomes easy to apply a pressing force to the other end part of the closing board part, and the bottom end of the inclined bottom edge of the breaking cylinder is inclined. The corresponding one end portion of the closing plate portion is difficult to break, and the opening may be insufficient. By comprising as mentioned above, the obstruction board part can be opened more reliably.

  [3] In the present invention, it is preferable to form a protruding piece protruding downward on the non-blade portion. When the contents are taken out by tilting the container after opening, it is necessary to hold the cylindrical part again so that it is pushed by the contents and is not closed by the closing plate part. Although it is conceivable to hold the blocking plate portion on the outer peripheral surface of the broken cylinder, it is necessary to increase the descending stroke of the spout member so that the blocking plate portion is pressed on the outer peripheral surface of the broken tube. In this case, when configured as described above, when the blocking plate portion is cut leaving the other end portion, the projecting piece presses the blocking plate portion, so that the further downward stroke of the spout member can be reduced. .

  [4] When the projecting piece is provided, the tip of the projecting blade part is preferably positioned below the projecting piece. Thereby, since the protruding blade portion breaks the blocking plate portion before the protruding piece comes into contact with the closing plate portion, the blocking plate portion can be easily broken.

Sectional drawing which shows the cap for containers of embodiment of this invention. Explanatory drawing which shows the state which removed the spout cap of this embodiment. Sectional drawing which showed FIG. 2 of this embodiment from the spout side (above). Explanatory drawing which shows the open state of this embodiment. Explanatory drawing which shows the lower end edge of the fracture | rupture cylinder of this embodiment.

  An embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view showing a container cap according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a state in which a spout cap is removed, and FIG. 3 is an explanatory view showing FIG. 2 from the spout side (upper side). FIG. 4 is a cross-sectional view showing the opened state, and FIG. 5 is an explanatory view showing the lower end edge of the broken cylinder.

  As shown in FIG. 1, the container cap 1 according to the embodiment of the present invention includes an inner plug 3 formed of a soft synthetic resin that is externally fitted to the mouth portion 21 of the container 2, and a spout 41. It comprises a spout member 4 that is externally fitted to the stopper 3 and is molded of a synthetic resin harder than the inner stopper 3, and a spout cap 5 that is molded of a hard synthetic resin that closes the spout 41. The spout cap 5 is screwed to the container mouth portion 21.

  The inner plug 3 includes a cylindrical portion 31 that forms a flow path for contents (not shown), a shoulder portion 32 that protrudes radially outward from the outer periphery of the cylindrical portion 31, and a container port that hangs down from the periphery of the shoulder portion 32. The cover portion 33 is fitted on the portion 21. An annular strip 34 is connected to the upper surface of the shoulder 32 via a resectable score 34a. As shown in FIGS. 2 and 3, a score 34b that can be broken in the vertical direction is formed at one location on the outer peripheral surface of the band-shaped portion 34, and a tab 35 is formed in the vicinity of the score 34b. Yes.

  As shown in FIG. 1, an annular groove portion 36 is formed on the upper surface of the shoulder portion 32 so as to be adjacent to the outer periphery of the inner cylinder portion 31. On the inner surface of the cylindrical portion 31, a blocking plate portion 37 is formed via a breakable score 37a, thereby blocking the flow path of the cylindrical portion 31. On the outer peripheral surface of the cylindrical portion 31, annular fitting grooves 31a and 31b are formed at two locations with a predetermined interval in the vertical direction.

  The spout member 4 includes a top plate portion 42 and a cylindrical peripheral wall portion 43 that hangs down from the periphery of the top plate portion 42. A spout 41 is formed on the outer surface of the top plate portion 42. Further, a broken cylinder 44 communicating with the spout 41 is formed on the inner surface of the top plate portion 42 and is inserted into the cylindrical portion 31.

  The lower end edge of the breaking cylinder 44 is inclined obliquely, and a blade portion 44a sharpened at an acute angle is formed to break the score 37a of the closing plate portion 37. A non-blade portion having no blade portion 44a is formed at the uppermost end portion of the inclined lower end edge of the fracture cylinder 44, and a projecting piece 44b extending downward is formed on the non-blade portion.

  The blade portion 44a is formed with a pair of protruding blade portions 44c that are positioned adjacent to the protruding piece 44b (see FIG. 5).

  On the inner peripheral surface of the lower end portion of the peripheral wall portion 43, an annular protrusion 43a that protrudes inward in the radial direction and fits into the fitting groove 31a of the cylindrical portion 31 is formed. A projecting portion 45 projecting radially outward is formed on the outer peripheral surface of the upper end portion of the peripheral wall portion 43, and is in contact with the upper end edge of the belt-like portion 34. Thereby, the descent | fall of the spout member 4 is controlled. As shown in FIGS. 2 and 3, a pair of blade pieces 46, 46 projecting radially outward is formed on the outer peripheral surface of the projecting portion 45.

  When opening the container cap 1 of the present embodiment, first, the band-shaped portion 34 is excised from the shoulder portion 32 while holding the tab 35 and breaking the tensile scores 34b, 34a in the circumferential direction. The lowering restriction of the spout member 4 by 34 is released. Then, the spout member 4 is pressed and lowered through the blade pieces 46, 46, the fitting between the protrusion 43 a and the fitting groove 31 a is released, and the score 37 a is broken by the breaking cylinder 44.

  Since the lower end edge of the breaking cylinder 44 is inclined, the score 37a is gradually broken by the blade portion 44a from the lowermost end portion of the lower end edge toward the uppermost end portion. Since the blade portion 44 a is not formed at the uppermost end portion of the lower end edge of the fracture cylinder 44, a part of the closing plate portion 37 remains connected to the cylindrical portion 31. And since the protruding piece 44b presses down the closing plate part 37, when the container 2 is tilted and the contents are taken out, the closing plate part 37 can be prevented from being closed again by the contents being pushed by the contents. When the blocking plate portion 37 is broken and opened by the broken cylinder 44, the protrusion 43a of the peripheral wall portion 43 is fitted with the fitting groove 31b of the cylindrical portion 31.

  As shown in FIG. 4, the lower portion of the peripheral wall portion 43 of the spout member 4 enters the annular groove portion 36, and therefore, a cylinder that protrudes above the shoulder portion 32 as compared with the case where the annular groove portion 36 is not formed. The protrusion amount of the part 31 can be shortened, and the vertical length of the container cap 1 can be shortened. In particular, when the lower end edge of the breaking cylinder 44 is inclined as in the embodiment, the breaking cylinder 44 breaks down the score 37 a and pushes down the closing plate portion 37. This is advantageous because the amount of movement is further increased.

  Note that the spout member 4 may be pressed and lowered through the spout cap 5. Since the spout cap 5 is screwed to the container mouth portion 21, the spout member 4 can be easily lowered with a small force while rotating the spout cap 5. In this case, the spout cap 5 may be screwed to the container mouth portion 21 with a clearance so that the spout cap 5 can move at least downward by the amount of downward movement of the spout member 4.

  According to the container cap 1 of the present embodiment, the closing plate portion 37 can be easily broken without increasing the inclination angle of the lower end edge of the breaking cylinder 31. This is because in the case where the conventional cutting edge portion is not provided, the score is broken from one end portion of the closing plate portion corresponding to the lowermost end portion of the lower end edge of the breaking tube as the breaking tube descends. As the rupture approaches the other end portion corresponding to the uppermost end portion of the lower end edge of the broken tube (the portion corresponding to the peripheral portion of the projecting piece 44b), the closing plate portion gradually inclines, and the pressing force of the broken tube is reduced. Because it escapes to one end side and the score of the other end portion is stretched without breaking, the other end portion of the closing plate portion is appropriately broken unless the inclination angle of the lower end edge of the broken tube is increased. It seems that it is impossible.

  In the container cap 1 of the present embodiment, the other end portion is broken earlier than the conventional one by the protruding blade portion 44c, so that the inclination angle of the lower end edge of the broken cylinder 31 is not increased compared to the conventional case. It is considered that the closing plate portion 37 can be easily broken.

  In addition, it is conceivable to hold the closing plate portion on the outer peripheral surface of the broken cylinder without providing the projecting piece 44b of the present embodiment. It is necessary to increase the descending stroke of the member. If the protruding piece 44b is provided as in this embodiment, the protruding piece 44b presses the closing plate portion 37 when the closing plate portion 37 is cut leaving a portion corresponding to the protruding piece 44b which is a non-blade portion. The downward stroke of the spout member 4 can be further reduced.

  Further, in the present embodiment, the tip of the projecting blade portion 44 c is positioned above the lowermost end portion of the lower end edge of the broken cylinder 31 that is positioned at the lowest position. When the tip of the projecting blade part is positioned below the lowermost part of the breaking cylinder, the projecting blade part will break the closing plate part first, and it becomes easier to apply a pressing force to the other end part of the closing plate part, It may be difficult to break the score of the closing plate portion corresponding to the lowermost end portion of the broken cylinder, and the opening of the closing plate portion may be insufficient. If comprised like this embodiment, the obstruction board part 37 can be opened more reliably.

  Further, the protruding blade portion 44c of the present embodiment is configured such that the tip thereof is positioned below the protruding piece 44b. Thereby, since the protruding blade portion 44c breaks the closing plate portion 37 before the protruding piece 44b contacts the closing plate portion 37, the closing plate portion 37 can be easily broken.

  In the container cap 1 of the embodiment, the spout member 4 having the peripheral wall portion 43 has been described. However, the present invention is not limited to this, and the spout member 4 may not have the peripheral wall portion 43. In this case, for example, an annular ridge projecting radially inward is formed on the inner peripheral surface of the upper end portion of the cylindrical portion 31, and the outer periphery of the fracture cylinder 44 is annular at two locations with a predetermined interval in the vertical direction. A fitting groove is formed, and an overhanging portion 45 projecting radially outward is formed on the outer peripheral edge of the top plate portion 42. When the upper end edge of the belt-like portion 34 abuts the overhanging portion 45 from below and restricts the lowering of the spout member 4, the protrusion of the cylindrical portion 31 and the fitting groove below the broken tube 44 are formed. When the restriction is released and the spout member 4 is lowered and the closing plate portion 37 is broken and opened, the protrusion of the cylindrical portion 31 and the fitting groove above the broken tube 44 are fitted. What is necessary is just to comprise so that it may match.

DESCRIPTION OF SYMBOLS 1 ... Container cap, 21 ... Container mouth part, 3 ... Inner plug, 31 ... Cylindrical part, 32 ... Shoulder part, 33 ... Cover part, 34 ... Band-shaped part, 36 ... Annular groove part, 37 ... Closure board part, 4 ... Outlet member, 41 ... Outlet, 42 ... Top plate part, 43 ... Peripheral wall part, 44 ... Broken tube, 44a ... Blade part, 44b ... Projection piece, 44c ... Projection blade part, 45 ... Overhang part, 5 ... Note Outlet cap.

Claims (4)

An inner plug comprising a cylindrical portion that forms a flow path for the contents contained in the container, a cover portion that is continuously connected to the outer periphery of the cylindrical portion via a shoulder portion, and is fitted around the container mouth portion, and a spout A spout member that fits in the inner plug so as to be able to descend and a spout cap that closes the spout are formed, and a blocking plate portion that closes the flow path is formed in the cylindrical portion so as to be breakable. In the cap for a container formed by rupturing the closing plate part and opening the cylindrical part as the spout member descends, the container cap is formed in communication with the spout.
The lower end edge of the breaking cylinder is inclined obliquely and has a blade part for breaking the closing plate part,
Of the inclined lower end edge of the broken cylinder, the uppermost end portion located at the uppermost portion is formed with a non-blade portion for preventing the closure plate portion from being broken,
A cap for a container, wherein a protruding blade portion protruding downward is formed in a portion of the blade portion adjacent to the non-blade portion. The container cap according to claim 1, wherein
The container cap, wherein the tip of the protruding blade portion is located above a lowermost portion located at the lowermost position among the inclined lower edge of the broken cylinder. The container cap according to claim 1 or 2,
A cap for a container, characterized in that a protruding piece protruding downward is formed on the non-blade portion. The container cap according to claim 3,
The container cap, wherein a tip of the protruding blade portion is positioned below the protruding piece.

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