JP2015151134A - cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable suppression of excessive fastening at the time of closing a cap by impairing finger hook during closing.SOLUTION: A cap comprises a cylindrical measurement part 21 with a lid, and a cap-side screw cylindrical part 22 which is provided in the measurement part 21 and can be engaged with a mouth part by a rotating operation. A peripheral wall part 23 of the measurement part 21 comprises notch parts 27 provided to face each other across a cylindrical central axis of the measurement part 21. In both notch parts 27, an opening-side finger hook surface 28B and a closing-side finger hook surface 28A, which extend in parallel to each other, are formed on the opening side and the closing side in a cap circumferential direction E respectively. A length dimension of the closing-side finger hook surface 28A in the cap circumferential direction E is smaller than that of the opening-side finger hook surface 28B.

Description

  The present invention relates to a cap that is detachably attached to a mouth portion of a container body.

  Conventionally, as a cap, for example, a cap that is easily opened as described in Patent Document 1 is known. Also, in containers that store liquid products such as liquid detergents, liquid bleaches, liquid softeners, and solvents, and granular materials such as granular detergents, granular bleaches, and granular seasonings, a cap is screwed into the mouth of the container body. Attachable and detachable, and the mouth is opened and closed by attaching and detaching this cap. In the cap, a screwed tube portion is arranged on the outer periphery of the covered tube-shaped measuring portion, and the tube portion located above the screwed tube portion (outside the container) in the measuring portion is covered with the outer shell portion. Some have a double structure, and further, by providing a notch portion relative to the outer edge of the double structure, there are some that aim to improve finger grip during the opening operation and ease of opening.

JP 2008-30823 A

  However, with the conventional container cap shape, it is easy to exert torque not only when opening, but also when closing, so that there is a risk of excessive screwing after use. Therefore, there are cases where it is difficult to open the cap when it is used later, and there is room for improvement in that respect.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the cap which can suppress the overtightening at the time of closure by making the finger catch at the time of closure worse.

  In order to achieve the above object, in the cap according to the present invention, the cap is configured to be attachable to the mouth portion of the container main body, and is provided in the main body portion with a lidded cylindrical shape, A rotation engaging portion that can be engaged with the mouth portion by a rotation operation, and the peripheral wall portion of the main body portion has a notch portion that is provided facing the cylindrical central axis of the main body portion. In addition, both the cutout portions extend in parallel with each other, and a cap-opening side finger-closing surface and a plug-side finger-holding surface are formed on each of the cap-opening side and the plug-closing side in the circumferential direction of the cap. The side finger hooking surface is characterized in that a length dimension in the cap circumferential direction is smaller than that of the opening side finger hooking surface.

In the present invention, when the cap is turned to the closing side in the circumferential direction of the cap after the container is used, the finger is hooked on the closing side finger hooking surface of the peripheral wall portion. At this time, the stopper-side finger-hanging surface is smaller in length in the cap circumferential direction than the opening-side finger-holding surface, and the finger is slidable, so that the finger-holding can be reduced. Therefore, it is difficult to rotate the cap in the closing direction, and excessive torque input can be prevented when closing the cap. That is, excessive tightening of the cap can be suppressed, so that the cap can be easily opened in the next use.
On the other hand, when opening the cap by turning it to the opening side, a finger hangs on the opening side finger hooking surface of the peripheral wall portion. At this time, the opening-side finger-hanging surface has a larger length in the circumferential direction of the cap than the closing-side finger-holding surface. You can enter into the cap.

  In the cap of the present invention, the boundary surface between the capping side finger hook surface and the peripheral wall portion is a curved surface obtained by chamfering a ridge line between the plug closing side finger hook surface and the peripheral wall portion with a curvature radius of 7 mm or more. It is preferable that it is formed as.

  In this case, the boundary surface formed by chamfering the ridgeline between the stopper side finger hook surface and the peripheral wall portion is a curved surface having a radius of curvature of 7 mm or more, and the finger becomes more slippery when the cap is closed. Overtightening can be prevented more reliably.

  Moreover, in the cap of this invention, it is preferable that the boundary surface between the said stopper side finger hook surface and the said surrounding wall part has comprised the plane.

  According to the present invention, it is possible to reduce finger hooking at a flat boundary surface, and it is possible to prevent an excessive torque from being generated when closing.

  In the cap of the present invention, it is preferable that an angle formed between the boundary surface and the stopper-side finger hook surface is 30 degrees or more.

  In this case, the angle formed by the boundary surface and the closing side finger hooking surface is 30 degrees or more, and the finger becomes more slippery at the time of closing, so that excessive tightening of the cap can be prevented more reliably.

  In the cap of the present invention, it is preferable that a width dimension of a lower portion of the stopper side finger hook surface is 70% or less before chamfering for providing the boundary surface.

  In this case, since the stopper-side finger hooking surface becomes small, the finger becomes more slippery at the time of closing, so that it is possible to more surely prevent the cap from being tightened excessively.

  According to the cap of the present invention, the peripheral surface of the peripheral wall portion has a smooth shape, and the finger hooking at the time of closing is worsened, thereby suppressing the generation of excessive torque at the time of closing and suppressing excessive tightening. Can do.

It is sectional drawing which follows the axis line of the cap periphery of the container with a measurement cap by embodiment of this invention. It is a perspective view of the measurement cap of the container with a measurement cap shown in FIG. It is the top view which looked at the measurement cap from the axial direction. It is the side view which looked at the peripheral wall part side of the measurement cap from the radial direction. It is the side view which looked at the notch part side of a measurement cap from radial direction. It is a side view which shows the 1st modification of a measurement cap, Comprising: It is a figure equivalent to FIG. It is a side view which shows the 2nd modification of a measurement cap, Comprising: It is a figure equivalent to FIG. It is a side view which shows the 3rd modification of a measurement cap, Comprising: It is a figure equivalent to FIG.

  Hereinafter, embodiments of a cap according to the present invention will be described with reference to the drawings.

  FIG. 1 is a vertical cross-sectional view of the top of a container (container) 1 with a measuring cap in an upright state. The container 1 with a measuring cap includes a container main body 2 that stores the contents, and a measuring cap (cap) 20 that is detachably attached to the mouth 3 located at the top of the container main body 2. The container body 2 stores liquid substances such as liquid detergents, liquid bleaches, liquid softeners, and solvents, and granular substances such as granular detergents, granular bleaches, and granular seasonings as contents. The mouth 3 of the container body 2 is composed of an inner mouth 5 of the hollow bottle body 4 and a nozzle cap 6 attached to the inner mouth 5.

  The bottle body 4 is integrally formed by blow molding using, for example, an olefin synthetic resin such as polyethylene, and the nozzle cap 6 is integrally formed by injection molding using, for example, an olefin synthetic resin such as polypropylene. The measuring cap 20 is integrally formed by injection molding using an olefin synthetic resin such as polypropylene.

  The inner opening 5 has a cylindrical shape along the vertical direction, and opens the inner space K1 of the bottle body 4 upward in the upright state. A nozzle cap 6 having a substantially bottomed cylindrical shape is attached to the inner opening 5 from above, and a measuring cap 20 having a substantially covered cylindrical shape is attached to the nozzle cap 6 from above. The inner port portion 5, the nozzle cap 6 and the measuring cap 20 share a central axis C1 (hereinafter simply referred to as an axis C1) along the upright vertical direction. Hereinafter, a direction along the axis C1 is referred to as a cap axial direction, a direction orthogonal to the axis C1 is referred to as a cap radial direction, and a circumferential direction around the axis C1 is referred to as a cap circumferential direction. Moreover, the open side of the inner mouth part 5 in the cap axial direction is referred to as the bottle upper side, and the bottle inner side of the inner mouth part 5 is referred to as the bottle lower side.

  The nozzle cap 6 includes a main body-side threaded tube portion 7 that is screwed into the inner opening 5 by relative rotation in the cap circumferential direction, and an end portion on the bottle upper side of the main body-side threaded tube portion 7 on the inner side in the cap radial direction. An annular main body side flange portion 8 that extends, a bottomed cylindrical insertion portion 9 that bulges downward from the inner periphery of the main body side flange portion 8 and enters the inner mouth portion 5, and a lower portion of the insertion portion 9 below the bottle. A flange 10 extending in a U-shaped cross section from the one inclined surface of the convex V-shaped bottom wall portion 9a to the upper side of the bottle, and a cylinder standing up from the intermediate portion in the cap radial direction of the main body side flange portion 8 above the bottle And a cylindrical main body side seal lip portion 12 that hangs downward from the intermediate portion in the cap radial direction of the main body side flange portion 8 and is in close contact with the inner periphery of the inner port portion 5. In the figure, reference numeral S1 denotes a gap between the cylindrical peripheral wall portion 9b and the bottom surface of the flange portion 10 in the insertion portion 9, and reference numeral 13 denotes a bottle body formed from one inclined surface of the bottom wall portion 9a to the lowermost end portion. The opening part which opens 4 internal space K1 is shown, respectively.

  A first screw thread 5a is provided on the outer periphery of the inner opening 5 in a spiral shape, and a second screw thread 7a for screwing the first screw thread 5a is formed in a spiral shape on the inner periphery of the main body side threaded tube portion 7. Is projected. A third screw thread 11a is provided on the outer periphery of the outer opening 11 in a spiral manner, and a fourth screw thread 11a is screwed into the inner periphery of a cap-side threaded tube portion 22 (to be described later) of the measuring cap 20. The screw thread 22a protrudes in a spiral shape.

  As shown in FIGS. 1 and 2, the measuring cap 20 includes a covered cylindrical measuring portion (main body portion) 21 that enters the insertion portion 9 so as to receive the heel portion 10 from above the bottle, and a cap of the measuring portion 21. A cylindrical cap-side threaded tube portion (rotating engagement portion) 22 that is provided apart from the outer periphery of the axial intermediate portion, and a cap-side threaded extension that extends downward from the outer peripheral edge of the top portion 21a of the measuring portion 21. Extending inward in the cap radial direction from the peripheral wall portion 23 (main body portion) covering the outer periphery of the tube portion 21b of the measuring portion 21 above the tube portion 22 and the end portion of the cap-side screwed tube portion 22 on the bottle upper side. The cap side flange portion 24 connected to the intermediate portion in the cap axial direction of the measuring portion 21 or the lower end edge portion of the peripheral wall portion 23, and hangs downward from the inner side of the cap side flange portion 24 in the cap radial direction to the bottom of the bottle. Cylindrical key close to the inner circumference Tsu and a flop side seal lip 25. Reference sign S <b> 2 in the drawing indicates a gap between the cylindrical portion 21 b of the measuring portion 21 and the peripheral wall portion 23.

  The top portion 21a of the measuring portion 21 has a convex dome shape above the bottle, and extends from the outer peripheral edge portion of the top portion 21a so that the peripheral wall portion 23 is curved downward in the bottle. The top part 21a and the peripheral wall part 23 form a continuous spherical outer surface, and form a rounded appearance on the top of the cap. In the cross section parallel to the axis C1 (vertical cross section, see FIG. 1), the angle formed by the top portion 21a and the cylinder portion 21b in the measuring portion 21 is an obtuse angle, and the liquid residue of the liquid content in the measuring portion 21 is suppressed. . On the outer surface of the top portion 21a, for example, five grounding convex portions 26 are formed that serve as legs when the measuring cap 20 is placed with the open end 21c of the measuring portion 21 facing upward. The grounding convex part 26 should just be at least three so that the measurement cap 20 can be mounted stably. The open end 21c of the measuring unit 21 is curved outward in the cap radial direction, and suppresses the wraparound to the outer surface of the cylindrical unit 21b when the liquid content in the measuring unit 21 is poured out.

  As shown in FIGS. 3 and 4, the peripheral wall portion 23 has, for example, cutout portions 27 cut out along two cut surfaces 27 a and 27 b parallel to the cap axis direction at two locations facing each other in the cap radial direction. Have. In other words, the peripheral wall portion 23 is provided at two locations opposite to each other in the cap radial direction on the bottle upper side of the measuring portion 21 so as to be separated from each other in the cap circumferential direction.

  Both the cut surfaces 27 a and 27 b are parallel to each other, and the distance between the both cut surfaces 27 a and 27 b is smaller than the outer diameter of the measuring portion 21. In both the notch portions 27, a part of the cylindrical portion 21b of the measuring portion 21 on the bottle upper side is arranged as an exposed portion 21d. An opening side finger hooking surface 28B and a closing side finger hooking surface 28A along the cut surfaces 27a and 27b are formed on both sides of the exposed portion 21d in the circumferential direction of the cap. The cap internal space does not open to the outer surface of the cap on the bottle upper side of the open side 22d on the bottle lower side of the cap-side threaded cylinder portion 22. The measuring cap 20 is configured to be transparent or translucent, and in both exposed portions 21d, a measuring scale marked by marking or printing on the inner peripheral surface of the cylindrical portion 21b can be seen from the outside of the cap. The measuring cap 20 only needs to be configured so that at least both exposed portions 21d are transparent or translucent.

  In FIG. 3, symbol W denotes the width of the exposed portion 21d when viewed from the direction orthogonal to the cut surfaces 27a and 27b, and symbol F denotes the width of the peripheral wall portion 23 when viewed from the direction along the cut surfaces 27a and 27b. Show. The width W of the exposed portion 21d is preferably at least 2 mm in consideration of visibility, draft angle during molding, and the like.

  Referring to FIG. 5, a line L1 in the figure indicates a tangent line that is in contact with the upper corner of the cap screwed cylinder part and the outer surface of the peripheral wall part 23, and a line R1 in the figure passes through a contact point T1 between the tangential line L1 and the peripheral wall part 23. A virtual circle along the circumferential direction of the cap is shown (see FIGS. 2 and 3). Both notches 27 cut out the virtual circle R1, and suppress rolling when the cap is placed on a plane along the tangent L1. Knurls or ribs for preventing slipping may be formed on the outer surface of the measuring cap 20, but it is desirable that at least the outer surfaces of both exposed portions 21d be smooth in order to make the measuring scale easy to see.

Further, as shown in FIG. 3, the notch portions 27 extend in parallel to each other, and the above-described opening side finger hooks are respectively provided on the opening side and the closing side in the cap circumferential direction E of the peripheral wall portion 23. The surface 28B and the closing side finger hooking surface 28A are formed, and the closing side finger hooking surface 28A is formed to have a smaller length dimension in the cap circumferential direction E than the opening side finger hanging surface 28B.
The boundary surface 29 between the capping side finger hook surface 28A and the peripheral wall portion 23 forms a curved surface in which the ridge line between the capping side finger hook surface 28A and the peripheral wall portion 23 is chamfered with a curvature radius of R7 mm or more. .

Next, the operation of the measuring cap 20 configured as described above will be described.
As shown in FIG. 2, in the present embodiment, when the measuring cap 20 is turned to the closing side in the cap circumferential direction E after the container is used, the finger is hooked on the closing side finger hooking surface 28 </ b> A of the peripheral wall portion 23. . At this time, the length of the stopper side finger hook surface 28A in the cap circumferential direction E is smaller than that of the plug side finger hook surface 28B, and the finger is slippery, so that the finger hook can be reduced. Therefore, it becomes difficult to rotate the measuring cap 20 in the closing direction, and excessive torque input can be prevented when closing the cap. That is, excessive tightening of the measuring cap 20 can be suppressed, so that the cap can be easily opened in the next use.

  On the other hand, when the metering cap 20 is turned to the opening side to open, the finger is put on the opening side finger hooking surface 28B of the peripheral wall portion 23. At this time, the opening side finger hooking surface 28B is larger in length in the cap circumferential direction E than the closing side finger hooking surface 28A, and the finger is less slippery than the case of closing the cap, so that the finger can be hooked and is necessary for opening. Torque can be input to the metering cap 20.

  And in this Embodiment, since the boundary surface 29 made by chamfering a ridgeline becomes a curved surface of R7 mm or more, since a finger becomes slippery more easily at the time of closing, overtightening can be prevented more reliably. .

  In addition, the magnitude | size of the curved surface of the boundary surface 29 between 28 A of plug closure side finger hook surfaces and the surrounding wall part 23 can be set suitably. For example, like the measuring cap 20A according to the first modification shown in FIG. 6, the boundary surface 29A formed by chamfering the ridge line between the capping side finger hooking surface 28A and the peripheral wall portion 23 is tightened at the time of capping. It is more preferable to set it as the curved surface which chamfered R10mm at the point to suppress. In this case, the boundary surface 29A becomes a curved surface of R7 mm or more, preferably R10 mm or more, and the finger becomes more slippery at the time of closing, so that overtightening can be prevented more reliably.

  As described above, in the cap according to the present embodiment, the peripheral surface of the peripheral wall portion 23 has a smooth shape and the finger hooking at the time of closing is worsened, so that excessive torque generation at the time of closing is suppressed and tightening is excessive. There is an effect that can be suppressed.

  As mentioned above, although embodiment of the cap concerning this invention was described, this invention is not limited to above-described embodiment, In the range which does not deviate from the meaning, it can change suitably.

For example, in the present embodiment and the first modification, the boundary surface 29 between the capping side finger hook surface 28A and the peripheral wall portion 23 is a curved surface, but is not limited to a curved surface. 7 may be a boundary surface 29B formed from a flat surface like a measuring cap 20B according to the second modification shown in FIG. The boundary surface 29B has an angle of 30 degrees with the capping side finger hooking surface 28A. In the case of a flat surface as described above, finger hooking at the flat boundary surface 29B can be reduced, and an excessive torque can be prevented from being generated when closing.
In particular, when the angle between the boundary surface 29B and the plug-side finger hooking surface 28A is 30 degrees or more, preferably 50 degrees or more, the fingers are more slippery when closing, thereby preventing over-tightening more reliably. Can do.
In addition, the width dimension D1 of the lower portion of the stopper-side finger hook surface 28A of the notch 27 is 70% or less of the width dimension D0 before chamfering that provides the boundary surface 29B (corresponding to the width dimension of the stopper-side finger hook surface 28B). It has become.

  Moreover, it is more preferable to set it as 40% or less like the measuring cap 20C by the 3rd modification shown in FIG. Also in this case, the width dimension D1 of the lower part of the stopper side finger hook surface 28A of the notch 27 is 70, which is a width dimension D0 before chamfering to provide the boundary surface 29C (corresponding to the width dimension of the stopper side finger hook surface 28B). % Or less.

  Here, in the measuring cap 20 according to the above-described embodiment and the measuring caps 20A to 20C according to the first to third modifications, a container is set on the torque meter, and the operation of closing the measuring cap is performed. Compared. The criteria for stopping the application of the capping force by the finger were “when the finger felt pain” and “when the finger slipped against the measuring cap”.

As a result, in the measuring cap 20 according to the embodiment shown in FIG. 2, the boundary surface 29 is a curved surface of R7 mm, and the torque value is 90 to 130 cN · m. In the measuring cap 20A according to the first modification shown in FIG. 6, the boundary surface 29A is a curved surface of R10 mm, and the torque value is 80 to 110 cN · m. Further, in the measuring cap 20B according to the second modification shown in FIG. 7, the angle between the boundary surface 29B and the capping side finger hooking surface 28A is 30 degrees and the chamfer is 70%, and the torque value is 95 to 125 cN · m. became. Further, in the measuring cap 20C according to the third modified example shown in FIG. 8, the angle formed by the boundary surface 29C and the capping side finger hooking surface 28A is 50 degrees and the chamfer is 40%, and the torque value is 60 to 90 cN · m. It became. And as a comparative example, in the case of the measuring cap which does not have a boundary surface, the torque value became 150-180 cN * m.
As the evaluation of usability, when it is excellent, good, defective in order from the highest, the measuring cap 20A of the first modified example and the measuring cap 20C of the third modified example have excellent usability evaluation, It can be determined that the measuring cap 20 of the embodiment and the measuring cap 20B of the second modified example are good and the measuring cap of the comparative example is bad.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1 Container with measuring cap (container)
2 Container body 3 Mouth 20, 20A, 20B, 20C Measuring cap (cap)
21 Weighing unit (main unit)
21a Top part 21b Cylinder part 22 Cap side screwing cylinder part (rotating engagement part)
23 Perimeter wall (main body)
27 Notch 28A Closure side finger hook surface 28B Open side finger hook surface 29, 29A, 29B, 29C Boundary surface D0, D1 Width dimension

Claims (5)

A cap configured to be attachable to the mouth of the container body,
A covered cylindrical body,
A rotation engagement portion provided in the main body portion and engageable with the mouth portion by a rotation operation;
With
The peripheral wall portion of the main body portion has a notch portion that is provided facing the cylindrical central axis of the main body portion,
Both the notches extend in parallel with each other, and are respectively provided with an opening side finger hanging surface and a closing side finger hanging surface on the opening side and the closing side in the circumferential direction of the cap,
The cap side finger hooking surface is smaller in length than the opening side finger hooking surface in the circumferential direction of the cap.   The boundary surface between the capping side finger-hanging surface and the peripheral wall portion is formed as a curved surface in which a ridge line between the capping-side finger hooking surface and the peripheral wall portion is chamfered with a curvature radius of 7 mm or more. The cap according to claim 1.   The cap according to claim 1, wherein a boundary surface between the stopper-side finger hooking surface and the peripheral wall portion is a flat surface.   The cap according to claim 3, wherein an angle between the boundary surface and the stopper-side finger hook surface is 30 degrees or more.   5. The cap according to claim 3, wherein a width dimension of a lower portion of the stopper side finger hooking surface is 70% or less before chamfering for providing the boundary surface.

Images