JP2012206761A - Cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap capable of enhancing sliding preventing function and reducing the pain to hands and fingers, while satisfactorily carrying out fitting with a zipper.SOLUTION: An operation part 10 having a shape different from that of a serration portion 9 is arranged in the lower part of the serration portion 9 arranged in the upper part of the outer peripheral surface of a cylindrical wall 8 of a cap body 1. The operation part 10 is constituted of a plurality of protruding stripes 12 lining in the peripheral direction of the outer peripheral surface and each extending in the vertical direction, top parts of the protruding stripes 12 extends substantially vertically, foot parts of a portion of or all of the protruding stripes 12 have shapes having parts coming closer to the top parts of the protruding stripes 12 in the lower part, in the cap.

Description

  The present invention relates to, for example, a cap that is fitted to a chuck of a capper and screwed to a container mouth.

  Conventionally, a serration (also known as knurling or knurl) portion that provides an anti-slip function during the opening operation (rotation operation) is provided over substantially the entire outer peripheral surface of the cylindrical wall of the cap body. The serration part has the following problems.

  That is, if the groove of the serration portion is too deep, there is a concern that the operator feels pain due to a large friction with the finger gripping the cap body for opening operation, and conversely, the groove of the serration portion is too shallow. And a sufficient anti-slip function is not demonstrated.

  Therefore, in order to give the cap both the anti-slip function and the gentleness to the finger of the operator, Patent Document 1 discloses a protrusion (projection) that forms a serration portion (nar). The technology of providing a non-uniform spacing in the direction is also disclosed in Patent Document 2, in which protrusions (projections) constituting serration portions (knals) have a circumferential interval of 0.95 mm to 1.15 mm. In addition, technologies for setting the height to 0.2 mm or more and 0.3 mm or less are disclosed.

JP 2008-44629 A JP 2008-44630 A

  However, in the technique described in Patent Document 1, the circumferential spacing of the protrusions of the serration portion is not uniform, which results in insufficient fitting (meshing) with the inner serration of the capper chuck, and further the container opening. This may cause a mounting failure of the cap to the part. In addition, this causes stress concentration due to the chuck on some protrusions, and if this causes a part of the serration part to be scraped off, the aesthetics of the cap may be impaired, or shavings may enter the container. May occur. Even in the technique described in Patent Document 2, the lowness of each protrusion on the serration portion causes a chucking failure.

  The present invention has been made in view of the above-described circumstances, and its purpose is to improve the anti-slip function and reduce pain on the fingers while enabling good fitting with the chuck. Is to provide.

  In order to achieve the above object, the cap according to the present invention is provided with an operation part having a shape different from that of the serration part below the serration part provided at the upper part of the outer peripheral surface of the cylindrical wall of the cap body. (Claim 1).

  In the cap, the operation portion is configured by a plurality of ridges arranged in the circumferential direction of the outer peripheral surface, each extending in the vertical direction, and the top portion of each ridge extends substantially vertically, and part or all of the projections. The ridge part of the strip may exhibit a shape having a portion closer to the top of the ridge toward the bottom (Claim 2).

  The said cap WHEREIN: The said operation part may exhibit the shape which interrupted in the up-down direction or the said circumferential direction the some protrusion which was arranged in the circumferential direction of the said outer peripheral surface, and each extended in an up-down direction. Item 3).

  In the cap, the operation portion is configured by a plurality of protrusions that are arranged in the circumferential direction of the outer peripheral surface and each extend in the vertical direction, and the number of vertical grooves that form the serration portion is different from the number of the protrusions. (Claim 4).

  In the cap, the operation portion may have a shape in which grooves opened only upward are connected in a circumferential direction of the outer peripheral surface (Claim 5).

  In the cap, the minimum outer diameter of the operation portion may be larger than the minimum outer diameter of the serration portion (Claim 6).

  In the invention according to each claim, it is possible to obtain a cap capable of improving the anti-slip function and reducing pain on the fingers while allowing good fitting with the chuck.

  That is, in the cap of the invention according to each claim, not only a poor fitting between the cap chuck and the cap body is surely avoided by the serration portion, but also an anti-slip function can be improved and pain to fingers can be reduced. The operation unit can have a shape.

  Moreover, in the invention according to claim 6, a cap excellent in releasability (ease of releasing from the mold) can be obtained.

It is a half sectional view showing roughly the composition of the cap concerning one embodiment of the present invention. (A) is a front view schematically showing the configuration of the cap, (B) is an explanatory view showing a part of a cross-sectional view taken along line XX and a part of a cross-sectional view taken along line YY in (A). It is. (A) is a front view which shows schematically the structure of the 1st modification of the operation part in the said embodiment, (B) is the sectional view on the AA line of (A). (A) is a front view schematically showing a configuration of a second modification of the operation unit, (B) is a sectional view taken along line BB of (A), and (C) is a line CC of (A). It is sectional drawing. (A) is a half sectional view schematically showing the configuration of the third modification of the operation section, (B) is a sectional view taken along the line DD of (A), and (C) is an enlarged view of the E section of (B). FIG. (A) is the half sectional view which shows schematically the structure of the 4th modification of the said operation part, (B) is the FF sectional view taken on the line of (A). (A) is the one side sectional view which shows the structure of the 5th modification of the said operation part roughly, (B) is the GG sectional view taken on the line of (A).

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

  As shown in FIG. 1, a cap according to an embodiment of the present invention has an annular band 3 connected to a lower end of a cap body 1 screwed into a container opening (not shown) via a plurality of bridges 2. Pilfer proof cap. That is, in order to prevent the band 3 from being detached from the container mouth when the cap main body 1 is removed (screwed) from the container mouth, the inner side of the band 3 is engaged with the annular protrusion of the container mouth. A matching flap 4 is provided. Therefore, the bridge 2 that connects the cap body 1 that is detached from the container mouth and the band 3 that is not detached when the container is opened is broken. In FIG. 1, reference numeral 5 denotes a slit, which is provided so as to avoid the bridge 2 at the boundary portion between the cap body 1 and the band 3.

  The cap according to the present embodiment is a so-called two-piece cap provided with a packing 6 that is inserted into the cap main body 1 and seals the container mouth. That is, the cap body 1 and the band 3 are integrally molded products made of synthetic resin, and the packing 6 is a synthetic resin member molded separately from the cap body 1.

  The cap body 1 has a substantially cylindrical tubular wall 8 that hangs down from the top wall 7 having a substantially circular shape in plan view. A serration portion 9 is formed at the upper portion of the outer peripheral surface of the tubular wall 8. Below that, an operation unit 10 having a shape different from that of the serration portion 9 is provided.

  The serration portion 9 is formed in the circumferential direction at the upper portion of the outer peripheral surface of the cylindrical wall 8 so as to have a shape suitable for fitting with a chuck of a capper for screwing and attaching the cap of the present embodiment to the container mouth portion. These are formed by a plurality of vertical grooves 11 each extending in the vertical direction, and are provided over the entire circumference of the outer peripheral surface of the cylindrical wall 8. Further, the serration portion 9 of the present embodiment is provided in a region from the upper end to the lower side of about 5 mm (preferably slightly over 5 mm) on the outer peripheral surface of the cylindrical wall 8.

  As shown in FIG. 1 and FIGS. 2 (A) and 2 (B), the operation unit 10 is constituted by a plurality of protrusions 12 that are arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 and each extend in the vertical direction. The top of the strip 12 (the portion located on the outermost side in the radial direction of the cylindrical wall 8) 12a extends substantially vertically, and the flange portion (the portion located on the innermost side in the radial direction of the cylindrical wall 8) 12b. Has a shape that approaches the top portion 12a toward the lower side (a groove formed between two adjacent protrusions 12 becomes shallower). As shown in FIG. 2B, since the protrusion 12 has a mountain shape in cross section, the lower part of the flange 12b is closer to the top 12a, and between the flanges 12b of the two adjacent protrusions 12 is lower. The distance gets longer.

  In addition, a tapered surface 13 that extends downward is formed below the operation portion 10 on the outer peripheral surface of the cylindrical wall 8, and the top portion 12 a of the ridge 12 extends vertically to a position connected to the tapered surface 13. That is, no gap is formed between the lower end of the ridge 12 and the tapered surface 13.

  In such a cap, the serration portion 9 not only reliably avoids a poor fitting between the cap chuck and the cap body 1, but also the flange 12b of the ridge 12 constituting the operation portion 10 is formed on the top portion 12a toward the lower side. As a result, the protruding amount of the protrusion 12 becomes smaller as it goes downward, so that a person who rotates the cap body 1 at the time of opening or closing can obtain an anti-slip function on the outer peripheral surface of the cylindrical wall 8. In this way, it is possible to appropriately select and grasp a portion where there is no or little pain on the finger, and thus it is possible to improve the anti-slip function and reduce pain on the finger.

  In addition, such a cap does not have a part that needs to be forcibly removed from the mold after molding (a part that squeezes downward or shrinks down), so that it can be releasable (ease of releasing from the mold). ).

  Here, the flange portion 12b of each protrusion 12 of the above embodiment is inclined so as to approach the top portion 12a downward from the upper end to the lower end, but, for example, around the outer peripheral surface of the cylindrical wall 8 In some or all of the plurality of ridges 12 arranged in such a manner, from the upper end of the ridge 12 to the intermediate position (position higher than the lower end), the flange portion 12b approaches the top portion 12a as it goes downward, and from the intermediate position to the lower end The flange portion 12b may extend substantially vertically until it reaches the bottom, and the flange portion 12b is configured such that a portion closer to the top portion 12a and a portion extending substantially vertically are arranged alternately and vertically in the lower part. May be.

  Further, a plurality of ridges 12 arranged so as to make a round on the outer peripheral surface of the cylindrical wall 8 are appropriately provided with ridges (not shown) in which the flange portion 12b extends substantially vertically from the upper end to the lower end (for example, in the circumferential direction). May be mixed (every few or every few).

  In the above embodiment, the vertical width of the operation portion 10 is larger than the vertical width of the serration portion 9, and the vertical width of the operation portion 10 is preferably equal to or greater than the vertical width of the serration portion 9. The vertical width of the portion 10 may be smaller than the vertical width of the serration portion 9.

  In addition, this invention is not limited to said embodiment at all, Of course, it can change and implement variously in the range which does not deviate from the summary of this invention. For example, the following modifications can be given.

  The cap of the above embodiment is a so-called two-piece cap provided with the packing 6, but the present invention is not limited to this. For example, the cap is not provided with the packing 6 and the inner ring is provided on the lower surface of the top wall portion 7. Application is also possible.

  Moreover, although the cap of the said embodiment is a product made from a synthetic resin, this invention is applicable also to a metal cap.

  You may make it provide fine unevenness | corrugation in the whole or a part of outer surface of the operation part 10 or the serration part 9. FIG.

  The operation unit 10 can be variously modified, and typical modifications thereof will be described below with reference to FIGS.

  3 (A) and 3 (B), the plurality of protrusions 14 arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 and extending in the vertical direction are intermittently intermittently (intermittently). It has an extended shape. In this case, since it is necessary to forcibly remove from the mold after molding, it is desirable to provide a so-called R on the lower surface side of the protrusion 14 to improve the releasability.

  In the example shown in FIGS. 3 (A) and 3 (B), the ridges 14 are provided with three regions 15 arranged in the vertical direction on the outer circumferential surface of the cylindrical wall 8, but there are two regions 15. The number may be four or more. The regions 15 may be provided at equal intervals in the vertical direction or may be provided at non-uniform intervals. Further, each region 15 in the illustrated example extends so as to be located on a plane orthogonal to the axis of the cylindrical wall 8, but a part or all of the plurality of regions 15 is relative to the axis of the cylindrical wall 8. The region 15 may extend in a zigzag shape or a sine wave shape, and the region 15 may be spirally wound along the outer peripheral surface of the cylindrical wall 8. It may extend so that. Further, all the protrusions 14 in the illustrated example have the same size and the same shape, but the sizes and shapes may be irregular.

  4A to 4C includes a plurality of protrusions 16 that are arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 and extend in the vertical direction, and constitute a serration portion 9. The number of the grooves 11 (the protrusions 9a) and the number of the protrusions 16 constituting the operation unit 10 are different. That is, in the illustrated example, one of the three protrusions 9a of the serration portion 9 arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 extends downward to form the protrusion 16. Therefore, the number of the ridges 16 is one third of the number of the longitudinal grooves 11 (ridges 9a). In addition, it is desirable to attach a so-called R to the lower surface side of the protrusion 9a where the protrusion 16 is not provided below to improve the releasability.

  In the example shown in FIGS. 4A to 4C, the number of the ridges 16 is one third of the number of the longitudinal grooves 11 (ridges 9a). The protrusions 16 may be provided at non-uniform intervals without being provided at equal intervals in the circumferential direction of the outer peripheral surface of the cylindrical wall 8. Further, the width of the ridge 16 may be larger or smaller than the width of the ridge 9a. When the width of the ridge 16 is smaller than the width of the ridge 9a, the number of the ridges 16 is set to the vertical groove 11 (projection). It can also be greater than the number in 9a).

  The operation unit 10 shown in FIGS. 5A to 5C intermittently has a plurality of protrusions 17 arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 and extending in the vertical direction in the circumferential direction (intermittent). (Extended). That is, in the illustrated example, the operation unit 10 is configured by arranging regions 18 formed by a set of a plurality of protrusions 17 at equal intervals in the circumferential direction. As shown in FIG. Then, the protrusion amount of the protrusion 17 at the center (the protrusion amount to the radially outer side of the cylindrical wall 8) is the largest, and the protrusion amount is smaller as the protrusion 17 is farther from the center. Further, in the illustrated example, on the outer peripheral surface of the cylindrical wall 8, the minimum outer diameter of the operation unit 10 is made larger than the minimum outer diameter of the serration portion 9, thereby improving the releasability.

  In addition, the shape and size of each protrusion 17 and each area | region 18, the space | interval between the area | regions 18 adjacent to the circumferential direction of the cylindrical wall 8, etc. can be changed suitably.

  The operation unit 10 shown in FIGS. 6A and 6B has a shape in which grooves 19 (U-shaped grooves in the illustrated example) opened only upward are connected in the circumferential direction of the outer peripheral surface of the cylindrical wall 8. Present. Also in this illustrated example, on the outer peripheral surface of the cylindrical wall 8, the minimum outer diameter of the operation portion 10 is made larger than the minimum outer diameter of the serration portion 9 to improve the releasability. In addition, although the shape of the groove | channel 19 can be changed suitably, for example, although the groove | channel 19 is arrange | positioned at equal intervals in the circumferential direction of the cylindrical wall 8 in the example of illustration, you may provide dispersion | variation in an interval.

  The operation unit 10 shown in FIGS. 7A and 7B is composed of a plurality of protrusions 20 that are arranged in the circumferential direction of the outer peripheral surface of the cylindrical wall 8 and each extend in the vertical direction, and the number of the protrusions 20 is serrated. 4 (A) to (A) in that the number of ridges 11 is less than the number of longitudinal grooves 11 (ridges 9a) constituting the portion 9, and the number of ridges is different from the number of ridges 9a of the serration portion 9. This is the same as the operation unit 10 shown in FIG. 7A and 7B, a plurality of protrusions 20 of the operation unit 10 are arranged in a wavy shape in the circumferential direction of the outer peripheral surface of the cylindrical wall 8, and the width of each protrusion 20 is It is larger than the ridge 9a. Also in the example shown in FIGS. 7A and 7B, the minimum outer diameter of the operation portion 10 is made larger than the minimum outer diameter of the serration portion 9 on the outer peripheral surface of the cylindrical wall 8, so We are trying to improve.

  Needless to say, the modifications described in the embodiment and after the description may be combined as appropriate.

1 Cap body 8 Tubular wall 9 Serration part 10 Operation part

Claims (6)

  The cap which provided the operation part which exhibits the shape different from this serration part under the serration part provided in the upper part of the outer peripheral surface of the cylindrical wall of a cap main body.   The operation portion is configured by a plurality of protrusions arranged in the circumferential direction of the outer peripheral surface, each extending in the vertical direction, and the top portion of each protrusion extends substantially vertically, and a part or all of the flange portions of the protrusion The cap according to claim 1, which has a shape having a portion closer to the top of the protrusion toward the bottom.   The said operation part is a cap of Claim 1 or 2 which exhibits the shape which interrupted in the up-down direction or the said circumferential direction the some protrusion which was arranged in the circumferential direction of the said outer peripheral surface, and each extended in an up-down direction.   The operation portion is constituted by a plurality of ridges arranged in the circumferential direction of the outer peripheral surface, each extending in the vertical direction, and the number of longitudinal grooves constituting the serration portion is different from the number of ridges. Item 4. The cap according to any one of Items 1 to 3.   The said operation part is a cap of Claim 1 which exhibits the shape which continued the groove | channel open | released only upwards in the circumferential direction of the said outer peripheral surface.   The cap according to any one of claims 1 to 5, wherein a minimum outer diameter of the operation portion is larger than a minimum outer diameter of the serration portion.

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