JP4583497B1 - Portable cap opener - Google Patents

Abstract

[PROBLEMS] To provide a cap opener that can easily remove a cap of a plastic bottle even for a weak child, a woman, an elderly person, etc., and a person having a weak grip and arm strength and a person having a hand or finger disorder. The purpose of the present invention is to provide a cap opener that does not cause idling or slipping during use.
A ring-shaped cap opener in which knurls are formed on the outer peripheral surface by molding and three protrusions are arranged on the inner peripheral surface, the protrusions having a plurality of peaks and having a thickness. 10-20mm ring cap opener. In particular, a cap opener in which the distance between the peaks of the protrusions is 6 degrees and the peak of the peaks is inclined.
[Selection] Figure 1

Description

  The present invention describes a portable cap opener for removing a rotating cap attached to an opening of a beverage container such as a plastic bottle (also referred to as a cap remover, a cap opening / closing aid, etc., hereinafter referred to as “cap opener”). .).

  In general, a plastic bottle, which is one of beverage containers, includes a plastic bottle main body that contains a beverage and a rotary cap that closes an opening of the plastic bottle main body. In order to prevent the beverage from leaking at the commercial stage, this PET bottle is provided with a fixing ring attached to the opening side of the PET bottle body, and a rotary cap is fixed to the fixing ring. Has been.

  Therefore, it is very difficult to remove the rotating cap attached to the beverage container for a person with weak grip strength or arm strength, such as a weak child, a woman, an elderly person, or a person with a hand or finger disorder. There was a thing.

  Therefore, various cap openers have been proposed so that the cap of the plastic bottle can be easily removed. However, although there are descriptions about the protrusions and knurling of the cap opener, it cannot be said that the relationship between these and the slipperiness, in particular, idling and idling, has been studied in detail. The idling refers to a phenomenon in which when the cap opener is rotated, the protrusion on the inner peripheral surface does not grip the cap and only the opener rotates. The idle slip refers to a phenomenon in which when the cap opener is rotated, the protrusion on the inner peripheral surface rubs the surface of the cap and scratches it.

  For example, by providing an angle in the opening direction at the claw portion that contacts the cap of the plastic bottle, the claw is bent due to elasticity when the cap is opened, and the cap of the plastic bottle and the claw tip are more closely attached to prevent the claw from slipping. There is a cap opener configured as described above (for example, see Patent Document 1). In addition, a 3-4 mm thick acrylic resin plate and stainless steel plate are processed, a circular hole with an inner diameter corresponding to the outer diameter of the screw-type gap of the PET bottle is formed in the central portion of the plate, and several finger hooks are provided on the outer periphery. There is a cap opener formed (see, for example, Patent Document 2). However, these are merely slip prevention, and it cannot be said that a cap opener for preventing idling and idling is sufficiently described.

  In addition to metal plastics, rubber is also used as the material for the cap opener (see, for example, Patent Document 3). Is not fully described.

  Furthermore, a cap opener having a function of a pull tab opener for an aluminum can is known (see, for example, Patent Documents 4 and 5).

  However, these known cap openers have the following problems. The cap openers described in Patent Documents 1 and 2 are insufficient in thickness and cannot be said to be effective for people with weak grip. For example, in the case of a cap opener having a thickness of 3 to 4 mm, when it is rotated, it may cause idling and idling. In particular, when an idle slip occurs, the protruding portion of the cap opener damages the surface of the cap of the PET bottle, and the crest portion of the cap peels off, which makes it difficult to remove the cap. Moreover, since the cap opener of patent document 1 has a nail | claw on all the internal peripheral surfaces, there exists a possibility of being injured if a ring-shaped cap opener is grasped. Moreover, since the cap opener of patent document 2 processes a hard board, it cannot be said that the manufacture is easy, and also had a problem in processing.

  Furthermore, since the cap opener of Patent Document 3 is made of rubber, it is considered to have a lower hardness than the cap of a plastic bottle, and there is a problem in use. That is, since rubber and the like are slippery, it is difficult to remove the cap of the plastic bottle from the cap opener after use.

  Further, the cap opener disclosed in Patent Document 4 has a complicated configuration, and the manufacturing cost cannot be ignored.

  The cap opener of Patent Document 5 has three gripping projections on the inner peripheral surface for gripping the cap. The gripping projection is a polygonal columnar body provided in a direction perpendicular to the inner periphery of the opening, preferably a columnar body having a triangular cross section. However, since the cap is held at the tip of the triangle at three points, it is not possible to completely prevent idling and idling. Further, since this cap opener also serves as a pull tab opener, in order to lighten the main body, the thickness of the cap opener portion must be reduced, and there is no sufficient cap gripping force. Further, this cap opener has a problem that its gripping force is reduced due to wear of the tip end portion of the protrusion due to use, causing idle rotation and idling, and its opening performance is reduced.

JP 2003-3000597 A JP 2009-126517 A Japanese Patent No. 4183144 JP 2002-37387 A JP 2001-158500 A

  As a result of earnestly examining the problems of the prior art as described above, the inventor of the present invention is not sufficiently thick in the conventional cap opener, and sufficiently solves the drawbacks of idling and slipping when rotating manually. I thought it was not. In particular, if the main body is made of hard plastic or metal and unevenness, soft plastic, or rubber is attached to the outer peripheral surface, it will not be a fundamental solution for slip prevention such as idling (see Patent Document 1). Furthermore, if a hard plastic or metal plate is processed, it is impossible to achieve the purpose of use of the cap opener with sufficient thickness and prevention of slipping (Patent Documents 1 and 2). Further, the cap opener is preferably harder than the cap material (see Patent Documents 2 and 3). Furthermore, it is desirable to use a lightweight cap with a good gripping force dedicated to the cap opener (patent documents 4 and 5).

  SUMMARY OF THE INVENTION An object of the present invention is to provide a cap opener that does not cause idling or slipping during use, in order to solve the above problems.

  As a result of intensive studies to solve the problems of the prior art as described above, the present inventors have found that the thickness of the cap opener, the shape and arrangement of the protrusions formed on the inner peripheral surface of the cap opener in contact with the cap, the cap opener The knowledge that the said subject can be solved by improving the shape of the knurling of an outer peripheral surface was acquired. Furthermore, it was found that a cap opener having the above-mentioned shape and arrangement can be easily manufactured by first manufacturing a mold and then integrally manufacturing the material by pouring and extruding the material, thereby completing the present invention. Specifically, the following cap opener is provided by the present invention.

[1] A ring-shaped cap opener in which knurls are formed on the outer peripheral surface by molding, and three protrusions are disposed on the inner peripheral surface.
A ring-shaped cap opener having a plurality of peaks and a thickness of 10 to 20 mm.

[2] The cap opener according to [1], wherein a distance between the peaks of the protrusions is 6 degrees and a peak of the peaks is inclined.

  The above problem can be solved by using the cap opener of the present invention. The cap opener according to the present invention firmly holds the cap with three protrusions formed of a plurality of peaks. Since each protrusion has a plurality of peaks, it has six or more contact points with the cap, so that the problem of preventing idling and idling is improved without idling and idling during use. Moreover, since the cap opener of the present invention has a thickness of 10 to 20 mm and firmly holds the cap, it is idle during use and no slipping occurs. In addition, the arrangement of the knurls on the outer peripheral surface makes it easy to hold and grip, so the cap of the PET bottle can be easily and reliably removed.

  Specifically, when the cap opener of the present invention is used for the cap of the PET bottle, the cap of the PET bottle is securely fixed by the projection of the cap opener, so that the grip strength of children, women, elderly people, etc. who are weak The cap of the PET bottle can be easily and reliably removed even for a person with weak arm strength or a person with a hand or finger disorder. Further, since the cap opener of the present invention has a ring shape and a smooth surface portion is formed on the inner peripheral surface, there is no risk of injury when the opener is gripped. Furthermore, weight reduction can be achieved by making the shape of the opener into a ring shape.

It is a perspective view which shows one Embodiment of the cap opener of this invention. FIG. It is the top view and bottom view which show one Embodiment of the cap opener of this invention. It is the side view and sectional drawing which show one Embodiment of the cap opener of this invention. It is one Embodiment of the cap opener of this invention, Comprising: It is the schematic which shows that the projection part and the cap of a PET bottle are contacting. It is one Embodiment of the cap opener of this invention, Comprising: It is a figure which shows arrangement | positioning of a projection part, the space | interval of a mountain, and a shape. It is a figure which shows one Embodiment which is one embodiment of the cap opener of this invention, and takes a relief part at the time of manufacture with a metal mold | die.

  Hereinafter, the form for implementing the cap opener of this invention is demonstrated concretely with drawing. However, the present invention broadly includes a cap opener as long as the invention specific matters are provided, and is not limited to the following embodiments.

  FIG. 1 shows an embodiment of the cap opener of the present invention. The cap opener body 1 includes an outer peripheral surface 2 and an inner peripheral surface 4. A projection 5 is formed on the inner peripheral surface 4. The inner peripheral surface other than the protrusions is a smooth surface. The protruding portion is composed of a plurality of peaks 11. A groove 3 is formed in the cap opener body 1. By forming the groove 3, the thickness of the cap opener main body 1 is ensured, and at the same time, the weight is reduced. A hole 6 is formed in the cap opener body 1. Arrow 13 is the direction of rotation.

  Knurls are formed on the outer peripheral surface 2. It is particularly preferable that the knurling has a twill shape. A cap opener having a twill-shaped knurl exhibits an excellent effect of being difficult to rotate freely. The knurled cap opener can be integrally and simultaneously formed on the outer peripheral surface 2 by extruding the melt with a mold. Moreover, since the main body 1 has a thickness of 10 to 20 mm, the cap opener according to the present invention does not slip.

  FIG. 2 is a plan view of an embodiment of the cap opener of the present invention. 2, (a) is a plan view seen from the use side (side grasped by hand). (B) is the top view (bottom view) seen from the cap insertion side. The groove 3 is provided on the cap insertion opening side. Arrow 13 is the direction of rotation.

  FIG. 3 is a side view and a sectional view of an embodiment of the cap opener of the present invention. The protrusion 5 has the same thickness as the main body 1, and the peak 11 at the top of the peak has an inclination from the opening 8 toward the opening (cap insertion opening) 7. For this reason, the cap opener of this invention has the advantage that it is easy to hold | grip the cap of a PET bottle, and idle rotation and an idling do not occur.

  The cap opener of the present invention has a ring shape, and the thickness is preferably 10 to 20 mm. The thickness is particularly preferably 13 to 17 mm. Moreover, it is preferable that the diameter (outer diameter) of the outer peripheral surface 2 is 50-70 mm, It is preferable that it is especially 56-64 mm, and it is most preferable that it is 60 mm. Moreover, it is preferable that the diameter (inside diameter) of the internal peripheral surface 4 is 31-37 mm, and it is especially preferable that it is 32-36 mm. It is preferable that the inner peripheral surface 4 is also inclined from the opening 8 toward the opening (cap insertion opening) 7 like the mountain 11.

  FIG. 4 is a diagram showing a usage pattern of the cap opener. 4A is a cross-sectional view of the cap opener main body 1 attached to the cap 9 of the plastic bottle, and FIG. 4B is a plan view of the cap opener main body 1 attached to the cap 9 of the plastic bottle. The cap opener according to the present invention has a thickness of 10 to 20 mm, and the chamfer 11 of the inner peripheral surface 4 and the protruding portion 5 is inclined, so that the PET bottle can be easily inserted. Arrow 13 is the direction of rotation.

  FIG. 5 is an enlarged view of the plan view. The cap opener body 1 of the present invention has three protrusions 5 formed on the inner peripheral surface 4 thereof. The arrangement of the protrusions 5 can be arbitrarily created, but is preferably 120 degrees apart. The protrusion 5 is composed of a plurality of protruding peaks 11. Arrow 13 is the direction of rotation.

  The mountain 11 has a triangular prism shape with a triangular cross section. Preferably, the cross section is a right-angled isosceles triangular saw-shaped column. The mountain 11 has an angle. The summit portion of the mountain 11 is R0.1 to 0.3, preferably R0.2. For this reason, compared with the conventional one, there is no injury during use. Moreover, it can prevent that the peak part of the peak 11 wears. The number of the mountains 11 is 6 to 12, preferably 8 to 10. It is preferable that the distance K between the peaks is 6 degrees.

  The distance L from the center of the cap opener of the opening 7 to the top of the mountain 11 is preferably 15.0 to 15.4 mm, particularly preferably 15.05 to 15.25 mm. The distance L from the center of the cap opener of the opening 8 to the peak of the mountain 11 is preferably 14.3 to 14.8 mm, and particularly preferably 14.40 to 14.06 mm. The difference in the distance L between the opening 7 and the opening 8 is preferably 0.5 to 1.5 mm, and particularly preferably 0.6 to 1.1 mm. The mountain 11 is provided with an inclination from the opening 8 to the opening 7.

  FIG. 6 shows another embodiment of the cap opener of the present invention. The cap opener body 1 includes an outer peripheral surface 2 and an inner peripheral surface 4. A projection 5 is formed on the inner peripheral surface 4. The protrusion 5 is composed of a plurality of peaks 11. A groove 3 is formed in the cap opener body 1. In this example, the outer circumferential surface is formed with a twill-shaped knurl, but a part of the knurl is not formed.

  Next, the operation of the cap opener of the present invention will be described. When the cap 9 of the plastic bottle is inserted into the opening (cap insertion opening) 7 of the cap opener, the crest 11 of the protrusion 5 of the cap opener and the cap 9 are fixed in contact with each other. By rotating the cap opener, the rotating ring is cut by rotating the cap 9 that closes the opening of the plastic bottle main body 10.

  Hereinafter, an example of the method for producing the cap opener of the present invention will be described.

  In the present invention, a mold corresponding to a desired cap opener is first manufactured. As the method, a known mold manufacturing method can be used. The cap opener of the present invention is integrally manufactured by extrusion molding from a mold. In this production, a known extrusion molding method using a mold can be used. First, the cap opener of the present invention can be manufactured by molding a mold and pouring the molten material into the mold.

  For example, the molten material is poured into a mold, cooled, and driven out from the mold to take out a desired cap opener. By using a mold, an integrated cap opener can be easily produced. As the molten material, for example, a zinc alloy, an aluminum alloy, or a magnesium alloy can be used.

In order to confirm the effects of the present invention, the following tests were conducted.
The cap opener of the present invention was produced by the production method described above. The molten material was a zinc alloy having a thickness of 15 mm, an outer diameter of 60 mm, and an inner diameter of 33 mm. The protrusions 5 on the inner peripheral surface were set at 120 ° intervals at three locations. The peaks 11 constituting the protrusion 5 were formed in a sawtooth shape having ten right-angled isosceles triangles. The interval between the peaks of the mountain 11 was 6 degrees. R11 is attached to the mountain 11 and the point of the mountain top is removed. The distance from the center of the cap opener to the top of the mountain 11 was 14.4 mm at the opening 8 and 15.2 mm at the opening 7. On the outer peripheral surface 2, a twill knurled was formed. Sample 1 was made with this size. Only the thickness was 10 mm, and the others were made with the same dimensions as Sample 2. Only the thickness was 20 mm, and the others were made with the same dimensions as Sample 3. On the other hand, for comparison, only the thickness was 3 mm, and the others were made with the same dimensions as Sample 4. Only the thickness was 5 mm, and the others were made with the same dimensions as Sample 5. Samples 1 to 3 are the present invention (examples), and samples 4 and 5 are comparative examples.

  The cap opener was tested using a commercially available plastic bottle cap. As shown in FIG. 4, the test was performed three times by inserting a cap of a PET bottle into each of samples 1 to 5. Sample 1, Sample 2, and Sample 3 were free from idling and slipping, and the cap could be removed. In sample 4 (comparative example), idling and idling occurred, and the cap could not be removed. In Sample 5 (Comparative Example), idling and idling occurred, but the cap could be removed. The thing of thickness 10-20mm was excellent, and the effect of this invention was confirmed. In Samples 1, 2, and 3, the actual contact length between the crest 11 and the cap was 8 mm in Sample 2. On the other hand, in Sample 5, it was 4 mm.

  The cap opener according to the present invention can easily and reliably remove the cap of a plastic bottle even for a weak child such as a child, a woman, or an elderly person, or a person who has a weak hand or finger strength, or a person with a hand or finger disorder. It can be used as a portable cap opener.

1: main body, 2: outer peripheral surface, 3: groove, 4: inner peripheral surface, 5: protrusion, 6 holes, 7: opening (cap insertion opening), 8: opening, 9: cap of PET bottle, 10 : Plastic bottle body, 11: Mountain, 12: Escape part, 13: Direction of rotation

Claims (2)

Zinc alloy, aluminum alloy, any of the magnesium alloy used as the molten material, by molding, knurling is formed on an outer peripheral surface, the inner circumferential surface at three positions of the protrusions arranged ring-shaped cap opener Because
The protruding portion has a plurality of mountain crest of the mountain toward the opening in the cap insertion opening is inclined, a spacing 6 degrees and their crests, the mountain cross section perpendicular A ring-shaped cap opener with an isosceles triangular saw shape and a thickness of 10 to 20 mm with a rounded top . 2. The cap opener according to claim 1, wherein R of the peak portion of the protrusion portion is 0.1 to 0.3 .

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