JP5879122B2 - cap - Google Patents

Description

  The present invention relates to a cap.

 In general, containers that store liquid substances such as liquid detergents, liquid bleaches, liquid softeners, solvents, etc., and granular substances such as granular detergents, granular bleaches, and granular seasonings are screwed into the mouth of the container body. The cap is provided with a knurl made of ridges or ridges oriented in a direction substantially perpendicular to the rotation direction so that fingers do not slip when opening and closing. . Among these, knurls composed of a plurality of concave stripes have a problem that the influence on the appearance of the cap can be reduced and the design is excellent, but fingers are easily slipped. On the other hand, a knurl composed of multiple ridges is less slippery than a knurl composed of ridges, but if the pitch between the ridges does not fit the size of the fingers, the surface connecting the tops of the ridges (knurls) There is a problem that the fingers can easily slide on the surface. In particular, fingers wet with liquid material or water tend to slip on the knurl surface.

In order to solve such a problem, a cap has been proposed in which a small rib shorter than a vertical rib is formed between adjacent vertical ribs in parallel with the vertical rib (for example, Patent Document 1). The invention of Patent Document 1 combines a vertical rib and a small rib to prevent a finger from slipping when rotating the cap, thereby facilitating the opening and closing of the cap.
Further, a knurled cap has been proposed in which the knurled formed on the outer peripheral surface is composed of a plurality of divided knurled (for example, Patent Document 2). The invention of Patent Document 2 forms, as a plurality of divided knurls, a concavo-convex portion in which a concavo-convex member is continuously formed and a blank portion without a concavo-convex member, or a left rotational friction portion and a right rotational friction portion. By doing so, opening and closing work of the cap is facilitated.

JP 2001-354247 A Japanese Patent Laid-Open No. 2007-1603

However, in the inventions of Patent Documents 1 and 2, when the cap is screwed to the container body, too much force is applied, and it may be difficult to screw the cap screwed to the container body.
Accordingly, an object of the present invention is to provide a cap that can be prevented from being firmly screwed to the container body and can be easily screwed off from the container body.

The cap of the present invention has a covered cylindrical shape, and on the outer peripheral surface is formed a knurled portion in which a plurality of ridges extending in the axial direction are arranged around the axis, and a smooth portion where the ridges are not formed, A base end of the first surface in the rotational direction in which the most protruding ridge of the knurled portion in the rotational direction to be screwed is screwed in a cap that is screwed or unscrewed to the container body by rotating around the axis. A first slope angle formed between the slope and a tangent line of a first virtual circle centered on the axis and passing through the proximal end of the first surface is the maximum slope angle. It is smaller than the second inclination angle formed between the second surface in the rotational direction to be screwed off at the protruding ridge at the tip and the tangent line of the second virtual circle passing through the base end of the second surface with the axis as the center. It is characterized by.

  According to the cap of the present invention, a cylindrical shape with a lid is formed, and a knurled portion in which a plurality of ridges extending in the axial direction are arranged around the axis and a smooth portion on which the ridges are not formed are formed on the outer peripheral surface. In the cap screwed or unscrewed to the container body by rotating around the axis, the first surface in the rotational direction in which the ridge of the ridge of the knurled portion in the rotational direction to be screwed is screwed A slope inclined from the base end toward the reference plane is formed, and a first inclination angle formed by the slope and a tangent line of a first virtual circle that is centered on the axis and passes through the base end of the first face is Than the second inclination angle formed by the second surface in the rotational direction to be screwed off at the most advanced ridge of the second surface and the tangent line of the second virtual circle passing through the proximal end of the second surface with the axis as the center. Because it is small, it is not screwed to the container body with excessive force. Ri can be easily unscrewed.

It is a side view of the cap concerning a first embodiment of the present invention. It is a top view of the cap concerning a first embodiment of the present invention. (A) It is a schematic diagram which shows a part of cap concerning 1st embodiment of this invention. (B) It is a schematic diagram which shows a part of cap concerning 1st embodiment of this invention. (A) It is a schematic diagram which shows a part of cap concerning 2nd embodiment of this invention. (B) It is a schematic diagram which shows a part of cap concerning 2nd embodiment of this invention.

(First embodiment)
The cap concerning 1st embodiment of this invention is demonstrated with reference to FIGS. 1-3 below.
As shown in FIGS. 1 and 2, the cap 1 includes a top wall portion 2 having a true circular shape in plan view, and a cylindrical peripheral wall portion 4 suspended from the periphery of the top wall portion 2. It has been done.

A screw portion 40 extending in the circumferential direction is formed near the top wall portion 2 on the inner surface of the peripheral wall portion 4. The cap 1 is rotated in the X1 direction around the axis O1 (hereinafter referred to as a screwing direction X1), so that the screw portion 40 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 around the axis O1 (hereinafter referred to as the screwing direction Y1).
Four knurled portions 10 are formed on the outer peripheral surface of the peripheral wall portion 4, and a smooth portion 30 in which the first convex stripes 12 and the second convex stripes 14 are not formed is formed between the knurled portions 10. ing.

FIG. 3A is a schematic diagram of the knurl part and its vicinity in plan view of the knurl part 10, and FIG. 3B is a partially enlarged view of FIG.
The knurled portion 10 is composed of seven first ridges 12 and six second ridges 14 extending in the direction of the axis O1 (that is, a direction orthogonal to the rotation direction of the cap 1), and in the screwing direction X1. Both ends are the first ridges 12, and the first ridges 12 and the second ridges 14 are alternately formed.
In the present embodiment, the first ridge 12 and the second ridge 14 are formed by engraving a plurality of ridges on the peripheral wall portion 4.

 The projecting end 12a of the first ridge 12 is located on the reference surface Q1 of the peripheral wall portion 4, and the projecting end 14a of the second ridge 14 is located inward of the reference surface Q1. That is, the first ridge 12 is higher than the second ridge 14. Thus, by alternately forming the first ridges 12 and the second ridges 14 having different heights, the cap 1 is rotated more in the screwing direction X1 or the screwing direction Y1. Fingers can be made difficult to slip.

The peripheral wall 4 has a surface (first surface) 13a in the screwing direction X1 of the first ridge 12 (hereinafter sometimes referred to as the most advanced ridge 13) located at the foremost end in the screwing direction X1. A flat slope 20 is formed from the base end (first base end) 13c toward the reference plane Q1, and the slope 20 is in contact with the reference plane Q1 at the boundary 22.
Thus, the inclined wall 20 and the smooth portion 30 are formed in the screwing direction X1 in order from the knurled portion 10 on the peripheral wall portion 4 of the cap 1 of the present embodiment.

The slope 20 has a first inclination angle θ1 formed between the slope 20 and the tangent line P1 of the virtual circle C1 centered on the axis O1 and passing through the first base end 13c. It is assumed to be smaller than the second inclination angle θ2 formed by the surface (second surface) 13b and the tangent line P2 of the virtual circle C1 passing through the base end (second base end) 13d of the second surface 13b. Yes. The tangent line P1 passes through the first base end 13c, and the tangent line P2 passes through the second base end 13d.
In the present embodiment, the first virtual circle and the second virtual circle are both virtual circles C1.

 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.

The height H1 of the cap 1 is appropriately determined in consideration of design properties and the like.
The outer diameter R1 of the cap 1 is appropriately determined in consideration of design properties and the like.

A formation range of an arbitrary knurled portion 10 and an inclined surface 20 adjacent thereto, that is, a line p1 connecting the rear end 11 of the screwing direction X1 and the axis O1 in the knurled portion 10, and a boundary 22 and the axis O1 are connected. The angle α1 formed with the line p2 is determined in consideration of the outer diameter R1 of the cap 1 and the like. For example, when the outer diameter R1 is 30 to 60 mm, the angle α1 is set to 30 to 60 °.
The formation range of the smooth portion 30, that is, the angle α2 formed by the line p2 and the line p1 sandwiching the smooth portion 30 is appropriately determined according to the formation range of the knurled portion 10 and the slope 20 adjacent thereto.

 Although the height T1 of the 1st protruding item | line 12, ie, the distance from the base end of the 1st protruding item | line 12, to the protruding end 12a is not specifically limited, For example, 0.2-1.5 mm is preferable. If it is less than 0.2 mm, when the cap 1 is rotated in the screwing direction X1 or the screwing direction Y1, fingers may not be easily caught on the knurled portion 10, and if it exceeds 1.5 mm, the fingers may feel pain. .

  The distance W1 between the first ridges 12, that is, the protrusions 12a of any first ridge 12, and the protrusions of any other first ridge 12 adjacent thereto via the second protrusion 14. Although the distance with 12a is not specifically limited, For example, 0.5-20 mm is preferable and 1-10 mm is more preferable. If it is in the said range, when rotating the cap 1 to the screwing direction X1 or the screwing direction Y1, a finger will become more difficult to slip.

  The second inclination angle θ2 of the most advanced ridge 13, that is, the inclination angle of the surface of the first ridge 12 in the screwing direction Y1 is appropriately determined in consideration of the outer diameter R1 of the cap 1, etc. It is more than 30 ° and less than 90 °.

 The height T2 of the second protrusion 14, that is, the distance from the base end of the second protrusion 14 to the protrusion 14a can be determined according to T1, for example, T2 / T1 = 0.2 or more and less than 1. preferable. If it is less than 0.2, the height difference is too large, and there is a risk of feeling pain in the fingers.

 The first inclination angle θ1 of the inclined surface 20 only needs to be smaller than the second inclination angle θ2, and is appropriately determined in consideration of the outer diameter R1 of the cap 1 and the like. For example, when the outer diameter R1 of the cap 1 is 30 to 60 mm, the first inclination angle θ1 is preferably 0 to 30 °, more preferably 0 to 15 °, and 0 ° (that is, the slope 20 is tangential). More preferably). If it is above the above lower limit value, it is possible to more reliably prevent the cap 1 from being overtightened when rotating in the screwing direction X1, and if it is below the above upper limit value, when the cap 1 is rotated in the screwing direction Y1. A finger is more easily hooked on the most advanced ridge 13, and the cap 1 can be screwed off from the container body more easily.

 The width w1 of the inclined surface 20, that is, the distance from the first base end 13c to the boundary 22 between the inclined surface 20 and the reference surface Q1, is appropriately determined in consideration of the outer diameter R1 of the cap 1, and the outer diameter R1 is 30. If it is -60 mm, 2-6 mm is preferable, for example. If it is above the lower limit value, it is possible to prevent excessive tightening when the cap 1 is rotated in the screwing direction X1, and if it is equal to or less than the upper limit value, it is the most advanced convexity when the cap 1 is rotated in the screwing direction Y1. It becomes easy to put a finger on the strip 13, and the cap 1 can be easily screwed off from the container body.

The usage method of the cap 1 of this embodiment is demonstrated.
A finger is brought into contact with the knurled portion 10 formed on the peripheral wall portion 4, and the cap 1 is gripped and rotated in the screwing direction X1 to be screwed to the container body. Here, if the cap 1 is to be screwed more firmly to the container body, the finger is gradually brought into contact with the sliding inclined surface 20 toward the screwing direction X1 on the surface of the knurled portion 10. The slope 20 has a first inclination angle θ 1 smaller than the second inclination angle of the most advanced ridge 13, so that fingers can easily slide on the slope 20. For this reason, when trying to screw the cap 1 with an excessive force, the finger slides on the slope 20 and the force to rotate the cap 1 in the screwing direction X1 is lost. As a result, the cap 1 can be prevented from being screwed into the container body excessively.
When the cap 1 is screwed off from the container body, a finger is brought into contact with the knurled portion 10 and the cap 1 is rotated in the screwing direction Y1. At this time, since the inclined surface 20 is formed adjacent to the most advanced ridge 13, the finger is easily brought into contact with the first surface 13 a of the most advanced ridge 13, and the finger is strong against the most advanced ridge 13. The cap 1 can be easily rotated in the screwing direction Y1.

 As described above, according to the present embodiment, the slope toward the reference plane is formed from the first base end of the most advanced ridge, and the first inclination angle of the slope is the second inclination angle of the most advanced ridge. Therefore, the cap is not screwed to the container body with an excessive force and can be easily screwed off from the container body.

(Second embodiment)
A second embodiment of the present invention will be described below 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.
4A is a schematic diagram of the knurled portion 110 and its vicinity in a plan view of the cap 100, and FIG. 4B is a partially enlarged view of FIG. 4A.

  Like the cap 1 of the first embodiment, the cap 100 of the present embodiment has seven first ridges 112 and six second ridges 114 extending in the axial direction on the outer peripheral surface of the peripheral wall portion 104. Four knurled portions 110 are formed, and between the knurled portions 110, the smooth portions 30 in which the first convex stripes 112 and the second convex stripes 114 are not formed are formed.

The knurled portion 110 has both ends in the screwing direction X1 as first ridges 112, and the first ridges 112 and the second ridges 114 are alternately formed.
The 1st protruding item | line 112 and the 2nd protruding item | line 114 are formed so that the outer surface of the surrounding wall part 104 may be used as the reference plane Q2, and it protrudes from the reference plane Q2.

 The base end of the first ridge 112 and the base end of the second ridge 114, that is, the bottom 111a of the recess 111 formed between the first ridge 112 and the second ridge 114, It is located on the reference plane Q2 of the peripheral wall portion 104 (ie, the surface of the peripheral wall portion 104). The height of the second ridge 114 is set lower than the height of the first ridge 112.

  A base end (first end) of a surface (first surface) 113a in the screwing direction X1 of the first ridge 112 (hereinafter sometimes referred to as the most advanced ridge 113) located at the foremost end in the screwing direction X1. The base end 113c is located inward of the reference plane Q2. A flat slope 120 extending from the first base end 113c toward the reference plane Q2 is formed on the peripheral wall portion 104, and the slope 120 is in contact with the reference plane Q2 at the boundary 122. That is, the inclined surface 120 is formed by a groove formed adjacent to the most advanced ridge 113.

 The slope 120 has a first inclination angle θ3 formed by the slope 120 and the tangent line P3 of the first virtual circle C2 that is centered on the axis of the cap 100 and passes through the first base end 113c. It is smaller than the second inclination angle θ4 formed by the surface (second surface) 113b in the screwing direction Y1 and the tangent line P4 of the reference surface Q2 at the base end (second base end) 113d of the second surface 113b. It is supposed to be. In the present embodiment, the second virtual circle is a line drawn by the reference plane Q2. The tangent line P3 passes through the first base end 113c, and the tangent line P4 passes through the second base end 113d.

 The formation range of the arbitrary knurl part 110 and the slope 120 adjacent thereto is the same as the formation range of the knurl part 10 and the slope 20 adjacent thereto in the first embodiment.

The height of the first ridge 112, that is, the distance from the reference surface Q2 to the protruding end 112a of the first ridge 112 is the same as the height of the first ridge 12 in the first embodiment.
The interval between the first ridges 112 is the same as the interval between the first ridges 12 in the first embodiment.
The height of the second ridge 114, that is, the distance from the reference plane Q2 to the protruding end 114a of the second ridge 114 is the same as the height of the second ridge 14 in the first embodiment.

  The second inclination angle θ4 of the most advanced ridge 113 is the same as the second inclination angle θ2 in the first embodiment.

The first inclination angle θ3 of the slope 120 is the same as the first inclination angle θ1 in the first embodiment.
The width w2 of the slope 120 is the same as the width w1 of the slope 20 in the first embodiment.

(Other embodiments)
The present invention is not limited to the above-described embodiment.
In the first and second embodiments, four knurl portions are formed. However, in the present invention, only a smooth portion may be formed, and there may be one knurl portion, or five or more. It may be.

 In 1st and 2nd embodiment, although the knurled part is comprised with the 1st protruding item | line and the 2nd protruding item | line lower than a 1st protruding item | line, this invention is not limited to this, A knurling All the parts may be composed of ridges having the same height, or may be composed of three or more kinds of ridges having different heights.

 In the first and second embodiments, one knurled portion is composed of a total of 13 ridges including seven first ridges and six second ridges. Without limitation, the number of ridges constituting one knurl portion may be determined as appropriate in consideration of the outer diameter of the cap, etc., or may be 12 or less, or 14 or more. Good.

 In the first and second embodiments, the cap has a true circular shape in plan view, but the present invention is not limited to this, and the shape of the cap may be an elliptical shape in plan view or a polygon in plan view. Among these, the cap is preferably a circular shape in plan view or a polygon that is an octagon or more in plan view, and more preferably a true circular shape in plan view. As the cap approaches a true circular shape in plan view, the effect of forming a slope becomes more prominent.

 In the first and second embodiments, the inclined surface is a flat surface, but the present invention is not limited to this, and the inclined surface may be a concave surface or a convex surface as long as the effects of the present invention are not impaired. It may be said.

DESCRIPTION OF SYMBOLS 1,100 Cap 10,110 Knurled part 12,112 First protruding line 13,113 Most advanced protruding line 13a, 113a First surface 13b, 113b Second surface 13c, 113c First base end 13d, 113d First Second base end 14, 114 Second convex line 20, 120 Slope 30 Smooth part θ1, θ3 First inclination angle θ2, θ4 Second inclination angle Q1, Q2 Reference plane C1, C2 Virtual circles P1, P2, P3 , P4 Tangent

Claims (2)

It is a covered cylinder, and on the outer peripheral surface, a knurled portion in which a plurality of ridges extending in the axial direction are arranged around the axis and a smooth portion where the ridges are not formed are formed and rotated around the axis. In the cap screwed or unscrewed to the container body by
From the proximal end of the first side in the rotational direction to be screwed leading edge of the convex of the knurled portion in the rotational direction to be screwed, slope leading to the reference surface is formed,
The reference plane is a virtual circle centered on an axis and passing through the boundary between the slope and the smooth portion,
The base end of the first surface is located inward of the reference surface,
The first inclination angle formed by the slope and the tangent line of the first virtual circle centered on the axis and passing through the base end of the first surface is the rotational direction to be screwed off in the most advanced ridge. A cap characterized by being smaller than a second inclination angle formed by the second surface and a tangent line of a second virtual circle passing through the base end of the second surface with the axis as a center. 2. The cap according to claim 1, wherein the first inclination angle is smaller than an inclination angle formed between the first surface and a tangent of a virtual circle passing through a base end of the first surface.

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