JP2015140214A - cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress excessive closing in closing a stopper by making it hard to place fingers to turn in closing the stopper.SOLUTION: In a topped cylindrical cap 1 which can be screwed to a mouth part of a container body and has a protruding knurl 10 on an outer peripheral surface of a peripheral wall part 4, the knurl 10 which comprises a combination of adjacent mountains of two shapes of a high knurl part 11 and a low knurl part 12 that are different in a height of the mountain is alternately and continuously arranged in a rotational direction E about a cap axis. In the cap 1, the high knurl part 11 has a first inclined surface 11a where a finger is placed in a stopper closing direction X1 in the rotational direction E and a second inclined surface 11b where the finger is placed in a stopper opening direction Y1, and an inclined angle θ1 of the first inclined surface 11a is smaller than an inclined angle θ2 of the second inclined surface 11b.

Description

  The present invention relates to a cap.

  In general, a cap that is easy to open as described in Patent Document 1, for example, 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. The cap is detachably attached, and the mouth is opened and closed by attaching and detaching the cap. The cap screwed into the mouth of the container body is formed with a knurl (knurl) composed of ridges or ridges oriented substantially perpendicular to the rotation direction so that fingers do not slip when opening and closing. The frictional force between the fingertip and the cap is increased.

JP 2001-354247 A

However, the conventional cap shape of the container makes it easy to exert torque not only at the time of opening but also at the time of closing, so that there is a possibility that the container is excessively screwed at the time of closing 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.
Further, when the container is shipped from the factory, it is possible to manage the torque applied to the closure and prevent over-closure, but it is extremely difficult to manage the closing force of the user who purchased the product. In particular, when the knurling works effectively at the time of closing, there is a possibility that the frictional force is exerted to cause over-closing.

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

  In order to achieve the above-mentioned object, the cap according to the present invention is a cap with a top shape that is configured to be screwable to the mouth portion of the container body and has a protruding knurled outer peripheral surface. The knurls are arranged such that a combination of adjacent ridges having two ridges, a high knurl portion and a low knurl portion having different ridge heights, are alternately arranged in the rotation direction around the cap axis. The knurled portion has a first slope on which a finger is hooked when the plug is rotated in the rotation direction, and a second slope on which a finger is hooked when the cap is opened, and an inclination angle of the first slope is larger than that of the second slope. It is small.

In the present invention, when the cap is turned to the closing side in the rotation direction after the container is used, the finger is placed on the first inclined surface of the high knurl portion. At this time, since the inclination angle of the first inclined surface is smaller than that of the second inclined surface, if the cap is to be rotated strongly, the finger slips and the finger catching becomes worse. In other words, it becomes difficult to rotate the cap in the closing direction, it is possible to prevent excessive torque from being input, and it is possible to suppress excessive tightening of the cap, so that it can be easily used in the next use. Can be opened.
On the other hand, when opening the cap by turning it to the opening side, a finger hangs on the second slope of the high knurl portion. At this time, since the inclination angle of the second slope is larger and steeper than that of the first slope, the finger can be strongly applied, the cap can be turned strongly, and the torque necessary for opening can be input to the cap.
Thus, by changing the friction coefficient between the opening direction and the closing direction with respect to the knurling, it is possible to prevent the cap from being excessively closed and to easily open the cap.

  In the cap of the present invention, it is preferable that the pitch in the rotational direction of a set of knurl groups is 0.5 to 3 mm.

  By adopting such a shape, a plurality of high knurls will hang on the finger, the finger will fit on the outer peripheral surface of the cap, and the above-mentioned effects will be more reliably exhibited both at the time of closing and opening Can do.

  Moreover, in the cap of this invention, it is preferable that the inclination angle of the 1st slope of the said high knurl part is 1 to 45 degrees, and the inclination angle of the 2nd slope is 45 to 90 degrees.

  In the present invention, the inclination angle of the first inclined surface of the high knurl portion where the finger is applied at the time of closing is a gentle inclination of 45 ° or less, and the inclination angle of the second inclined surface where the finger is applied at the time of opening is a steep inclination exceeding 45 °. Therefore, the above-described effects can be more reliably exhibited both at the time of closing and at the time of opening.

  Moreover, in the cap of this invention, it is preferable that the quantity of the said high knurl part is larger than the said low knurl part among one set of knurl groups.

  In this case, by increasing the number of high knurled parts, the coefficient of friction at the time of opening and closing can be increased, and it can be set to knurled with an appropriate coefficient of friction according to the size, shape, material, etc. of the cap. it can.

  In the cap of the present invention, it is preferable that the high knurl portion has a substantially triangular shape with a cross section orthogonal to the cap axial direction having a protruding end as a top.

  In this case, since the apex having an acute angle is formed in the high knurl portion, there is an advantage that the finger can be easily hooked on the apex both when opening and closing.

  According to the cap of the present invention, it is possible to make the finger slip easily with respect to the knurl at the time of closing, reduce the friction generated at the fingertip, and worsen the finger hooking, thereby suppressing the generation of excessive torque at the time of closing and tightening. It can be suppressed from becoming too much.

It is a perspective view of the cap by the 1st Embodiment of this invention. It is a top view of the cap shown in FIG. It is the elements on larger scale which show a part of knurl formed in the cap. It is the elements on larger scale which show a part of knurl formed in the cap by 2nd Embodiment, Comprising: It is a figure corresponding to FIG.

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

(First embodiment)
As shown in FIGS. 1 and 2, the cap 1 according to the present embodiment is screwed into a mouth portion located at the top of a container main body (not shown) that stores contents. The cap 1 includes a top wall portion 2 that is truly circular in plan view, and a cylindrical peripheral wall portion 4 that is suspended from the periphery of the top wall portion 2, and has a cylindrical shape as a whole. Here, the said container main body accommodates powders, such as liquid substances, such as a liquid detergent, a liquid bleach, a liquid softening agent, a solvent, and granular detergent, a granular bleach, a granular seasoning, as a content.
The material of the cap 1 is not particularly limited, and may be a resin such as polyethylene, polypropylene, or polyester, or a metal such as aluminum.

  A screw portion (not shown) extending in the circumferential direction is formed on the inner surface of the peripheral wall portion 4. The cap 1 is rotated in the X1 direction around the cap axis O1 (hereinafter referred to as the closing direction X1), so that the screw portion is screwed with a screw portion (not shown) formed in the mouth portion of the container body. It is screwed to the container body and is unscrewed from the container body by being rotated in the Y1 direction (hereinafter referred to as the opening direction Y1) around the cap axis O1.

  Here, the rotation direction E of the cap 1 refers to a direction around the cap axis O1, and a direction orthogonal to the cap axis O1 is referred to as a cap radial direction. Further, the top side of the cap 1 in the direction of the cap axis O1 is referred to as the upper side, and the open side is referred to as the lower side.

  As shown in FIG. 3, a knurl 10 is formed on the outer peripheral surface of the peripheral wall portion 4. The knurl 10 includes a pair of adjacent pairs each having two ridges of a high knurl portion 11 and a low knurl portion 12 having different ridge heights arranged alternately and continuously in the rotation direction E around the cap axis O1. Yes. Each of the high knurl portion 11 and the low knurl portion 12 extends in the direction of the cap axis O1, and a cross section perpendicular to the direction of the cap axis O1 has a substantially triangular shape with the projecting ends as apexes 11c and 12c. That is, the top part 11 c of the high knurl part 11 is located on the outer side in the radial direction than the top part 12 c of the low knurl part 12.

The high knurl portion 11 has a first slope 11a on which a finger is hooked when the plug is rotated in the closing direction X1, and a second slope 11b on which the finger is hooked when the stopper is rotated in the opening direction. The inclination angle θ1 of 11a is formed smaller than the inclination angle θ2 of the second inclined surface 11b. For example, it is preferable that the inclination angle θ1 of the first slope 11a of the high knurl portion 11 is 1 to 45 ° and the inclination angle θ2 of the second slope 11b is 45 to 90 °.
The low knurled portion 12 gradually increases from the proximal end toward the plugging direction of the rotational direction E, and gradually decreases from the proximal end to the radially outer side in the radial direction. A fourth inclined surface 12b that is inclined toward the outside of the first inclined surface, and an inclination angle θ3 of the third inclined surface 12a is formed larger than an inclination angle θ4 of the fourth inclined surface 12b.

  The pitch P in the rotation direction E of a set of knurl groups 10A composed of one high knurl portion 11 and one low knurl portion 12 is different from the outer peripheral surface of the peripheral wall portion 4 on the first slope 11a of the high knurl portion 11. The distance in the circumferential direction from the intersecting portion (base end 11d) to the intersecting portion (base end 12d) with the outer peripheral surface of the peripheral wall portion 4 on the fourth inclined surface 12b of the low knurled portion 12 is referred to. The pitch P of the knurl group 10A is preferably, for example, 0.5 to 3 mm. That is, the interval between the high knurl portions 11 and 11 adjacent to each other in the rotation direction E is formed to a dimension that does not allow a finger to enter, and is set to a dimension that the finger does not hang on the low knurl portion 12 regardless of its shape. Has been. When the pitch P is less than 0.4 mm, the high knurl portion 11 that hits the finger due to the interval being too small may cause excessive pain on the finger, and if the pitch P exceeds 3 mm, the cap 1 may be removed. There is a possibility that a finger is not easily caught on the high knurl portion 11 when it is grasped.

Note that the height difference between the high knurl portion 11 and the low knurl portion 12 is not particularly limited as long as the top portion 12c of the low knurl portion 12 is lower than the top portion 11c of the high knurl portion 11, but it is not limited. It is preferable that the difference in height is larger in consideration of the degree of finger engagement when plugging.
In the present embodiment, the high knurl portion 11 and the low knurl portion 12 are formed by engraving a plurality of concave stripes on the peripheral wall portion 4.

Next, the usage method and operation of the cap 1 of the present embodiment will be described based on the drawings.
As shown in FIGS. 1 to 3, in this embodiment, when the container 1 is used and the cap 1 is gripped and turned in the closing direction X <b> 1 in the rotation direction E, the low knurl portion 12 is positioned on both sides in the rotation direction. Is lower than the high knurl portion 11 adjacent to the finger, and the finger fits into the low knurl portion 12 between the high knurl portions 11, 11, and the finger extends from the first slope 11 a of the high knurl portion 11 to the top portion 11 c. Is caught.
At this time, since the inclination angle θ1 of the first inclined surface 11a is 45 ° or less and is smaller than the steep inclination exceeding 45 ° of the inclination angle θ2 of the second inclined surface 11b, the knurl 10 comes into contact with the tightening force. The finger that slides gradually slides on the first slope 11a, and the finger hooking becomes worse. Therefore, it becomes difficult to rotate the cap 1 in the closing direction X1, and it is possible to prevent an excessive torque from being input when closing the cap. That is, it is possible to suppress over-tightening of the cap 1, and when the container is used next time, it can be easily opened.

On the other hand, when the cap 1 is turned to the opening side, the finger is strongly applied to the second inclined surface 11b of the high knurl portion 11 formed with a steep slope. Thus, the finger does not slip and the finger is sufficiently hooked, and the torque necessary for opening can be input to the cap 1, and the cap 1 can be easily rotated in the opening direction Y1.
Thus, by changing the friction coefficient between the closing direction X1 and the opening direction Y1 with respect to the knurl 10, it is possible to prevent the cap 1 from being excessively closed and to easily open the cap 1.

  Further, in the present embodiment, a plurality of high knurl portions 11 are hooked on the finger by forming a shape in which the pitch P in the rotation direction E of the pair of knurl groups 10A is 0.5 to 3 mm, and the cap A finger fits on the outer peripheral surface of 1, and the above-described effects can be more reliably exhibited both at the time of closing and at the time of opening.

  In addition, in the present embodiment, since the apex portion 11c forming an acute angle is formed in the high knurl portion 11, there is an advantage that a finger can be easily hooked to the apex portion 11c at the time of opening and closing.

  As described above, in the cap according to the present embodiment, excessive torque is generated at the time of closing by making the finger easy to slide with respect to the knurl 10 at the time of closing, reducing the friction generated at the fingertip, and worsening the finger hooking. It is possible to suppress excessive tightening.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences from the first embodiment are mainly described.
As shown in FIG. 4, the cap 1 </ b> A according to the present embodiment has two high knurl portions 11 in the set of knurl groups 10 </ b> B and more than the low knurl portions 12. That is, the knurl group 10 </ b> B is composed of three peaks of a pair of a high knurl portion 11 and a low knurl portion 12 that are connected in the rotation direction E to form one pitch P.
Here, as a set of knurls, the ratio between the high knurl part 11 and the low knurl part 12 is not limited to 2: 1 as in the second embodiment, but is 4: 1, for example. Although there may be, it is preferable to set it as 2: 1 to 4: 1.

  In this case, the coefficient of friction at the time of opening and closing can be increased by increasing the quantity of the high knurl portion 11, and the knurling having an appropriate friction coefficient can be set according to the size, shape, material, etc. of the cap. Can do.

  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, the knurl 10 is formed on the entire circumference of the peripheral wall portion 4 of the cap 1, 1 </ b> A. However, the knurl 10 is not limited to the entire circumference, and may be a partial range of the circumferential surface. It doesn't matter.
Further, the peripheral wall portion 4 on which the knurl 10 is formed is not limited to a circular shape in plan view, and may be a polygonal shape, an elliptical shape, or the like. Furthermore, although the knurl 10 is formed in the peripheral wall part 4 in this Embodiment, it is not limited to this, You may form in the outer peripheral surface of the top wall part 2 in the example of this Embodiment.

  In the present embodiment, the high knurl portion 11 is formed in a substantially triangular shape, but is not limited thereto. For example, a flat portion may be formed on the top portion 11c, or the top portion c may have a shape rounded in an arc shape. In short, as the high knurled portion 11, it is only necessary to form the first inclined surface 11a and the second inclined surface 11b having a larger inclination angle than the first inclined surface 11a.

  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.

DESCRIPTION OF SYMBOLS 1, 1A Cap 2 Top wall part 4 Peripheral wall part 10 Knurling 10A, 10B Knurled group 11 High knurl part 11a 1st slope 11b 2nd slope 12 Low knurl part 12a 3rd slope 12b 4th slope E Rotation direction O1 Cap axis P pitch X1 Closing direction Y1 Opening direction θ1-θ4 Inclination angle

Claims (5)

It is configured to be screwable to the mouth portion of the container body, and is a cap with a top cylindrical shape in which a protruding knurl is formed on the outer peripheral surface,
The knurls are arranged in succession alternately in a rotational direction around the cap axis, with a combination of two adjacent ridges having two ridges, a high knurl portion and a low knurl portion having different ridge heights,
The high knurl portion includes a first slope on which a finger is hooked when the cap is rotated in the rotation direction, and a second slope on which a finger is hooked when the cap is opened,
The cap characterized in that an inclination angle of the first slope is smaller than that of the second slope.   2. The cap according to claim 1, wherein a pitch in the rotation direction of one set of knurl groups is 0.5 to 3 mm.   The cap according to claim 1 or 2, wherein an inclination angle of the first slope of the high knurl portion is 1 to 45 °, and an inclination angle of the second slope is 45 to 90 °.   The cap according to any one of claims 1 to 3, wherein the number of the high knurl portions in the set of knurl groups is larger than that of the low knurl portions.   5. The cap according to claim 1, wherein the high knurl portion has a substantially triangular cross section orthogonal to the cap axial direction with a protruding end as a top.

Images