JP3959476B2 - Screw cap opener - Google Patents

Description

  The present invention relates to a screw stopper opening device made of an elastomer used for removing a screw stopper cap such as a PET bottle, a soft drink bottle, or a health drink bottle.

  This type of cap may be tightened in the closing direction to seal the contents. Further, in order to prevent unauthorized opening, the cap and the ring body are composed of a ring body connected to the opening edge of the lower end of the cap via a fin-shaped protrusion, and the cap is twisted in the opening direction. There is a type in which a fin-like protruding piece connecting the two is cut. In order to prevent unauthorized opening, it is a type of screw cap made of metal such as aluminum, and consists of a cap and a connecting strip connected to the opening edge of the lower end of the cap through a perforation, and the cap is opened in the direction of opening. There is a type in which the perforation connecting the cap and the connecting strip is cut by being twisted, and the connecting strip is removed together with the cap while extending spirally.

  In order to open these types of caps with bare hands, it is necessary to apply a certain level of force in the opening direction to the caps at the time of the first opening, which is difficult for a person with weak power. Further, in a metal screw cap composed of a cap and a connecting strip, there is a risk of damaging the hand with the connecting strip that is removed while extending in the opening edge of the cap or spirally because of the momentum at the first opening.

Therefore, as a means for solving these problems, Japanese Patent Application Laid-Open No. 2003-292093 discloses a cylindrical small-diameter portion made of a flexible high-friction material, and a cylindrical large-diameter portion integrally connected to the small-diameter portion. A cap opener (hereinafter referred to as instrument A) is disclosed and is publicly known. Japanese Patent Laid-Open No. 2002-166950 discloses a cap removal protection device (which is formed in a cylindrical shape capable of covering the entire outer periphery of a cap body provided at a bottle mouth and a portion extending over a ring body). Hereinafter, it is referred to as instrument B), and an example formed of a synthetic resin having appropriate adhesiveness and adhesiveness such as a polyolefin-based resin is disclosed and publicly known. These all use so-called elastomers rich in elasticity as materials, have good adhesion to the cap, and have a high frictional force, so that there is an advantage that the cap can be opened with a small force.
JP 2003-292093 A JP 2002-166950 A

  However, at the same time, these conventional techniques assume that the cap of a general substantially cylindrical wall screw cap is opened, and are made of an elastomer which is rich in elasticity and has good adhesion to the cap, and is used as a device. Since B is formed in a cylindrical or conical cylinder shape, when the cap is fitted into the instrument A or the instrument B, the cap is fitted in close contact with the instrument A or the instrument B. There is no air escape space in the space in the direction of insertion of the inner cap, and air accumulates in the interior to provide resistance for the cap insertion operation. Further, when the cap is taken out from the appliance A or B after the cap is opened, it is difficult to take out the cap because the cap is in close contact with the appliance A or B, and the cap is in close contact with the appliance A or B. Since it is taken out, the space after the cap is moved in the taking-out direction in the device A or the device B is in a vacuum state, which becomes a resistance of the cap removing operation.

  Furthermore, since the device A or the device B is formed in a shape that can completely cover the cap, the opening edge of the cap or a connecting strip that is detached while extending spirally does not damage the hand when the cap is opened. However, it is difficult to confirm the cap removal during the opening operation.

  Therefore, the present invention is intended for a screw cap opening device using an elastomer as a material, so that air does not accumulate inside when the cap is inserted before opening and does not become a resistance of the cap insertion work. The present invention provides a screw cap opening / closing device in which a vacuum state is formed inside when removing the cap and does not become a resistance of the cap removing operation, and the open state can be confirmed during the opening operation.

The configuration of the present invention taken to solve this problem will be described with reference to the reference numerals used in the drawings showing the embodiment. The screw stopper opening device of the present invention is a cylindrical shape that is closely fitted to the screw stopper. A screw plug opening device in which a wall 1 and a ceiling portion 2 covering an opening at one end in the axial direction of the cylindrical wall 1 are integrally formed of elastomer as a material, and the axial direction of the cylindrical wall 1 A cut portion 3 having a size that is ¼ to ½ of the circumferential length and ¼ to ½ of the axial length is formed on the peripheral wall of the opening at the other end. The opening state can be confirmed from the cut part at the time of opening, and the remaining circumferential part that is not cut covers the ring body and the spiral strip connected to the opening edge of the lower end of the cap. The hole 4 is formed in the ceiling portion 2.

  According to the screw stopper opening device of the present invention, the cylindrical wall into which the screw stopper is inserted and the ceiling portion covering the opening at one end in the axial direction of the cylindrical wall are integrally formed using an elastomer as a material, and the ceiling Since the hole is formed in the part, when inserting the cap into the instrument before opening, even if the cap is fitted in close contact with the instrument, the air in the instrument does not pass through the hole in the ceiling. Since the air flows out to the outside, the cap can be smoothly inserted into the instrument without causing air to accumulate in the space in the cap insertion direction and causing resistance to movement in the cap insertion direction. Also, when removing the cap from the instrument after opening, even if the cap is removed while being in close contact with the instrument, air will flow in from the outside through the hole in the ceiling, so after moving the cap in the ejection direction The space in the chamber becomes a vacuum and does not become a resistance to movement in the cap removal direction, so that the cap can be removed smoothly, and if necessary, the cap can be removed by inserting a finger into the hole and pushing out the cap. it can.

  Also, the cylindrical wall into which the screw plug is fitted and the ceiling portion covering the opening at one end in the axial direction of the cylindrical wall are integrally formed of elastomer as a material, and the opening at the other end in the axial direction of the cylindrical wall is formed. Since the peripheral wall is formed with a cut portion having a size that is ¼ to ½ of the length in the circumferential direction and ¼ to ½ of the length in the axial direction. An opening peripheral wall having a size that is one-half to three-fourths of the circumferential length remaining without being cut while being able to check the open state from the portion that was cut when the plug was opened Since this part covers the ring body and the spiral strip connected to the opening edge of the cap and the opening edge of the lower end of the cap, the cap can be safely opened without damaging the finger.

  In carrying out the screw stopper opening device of the present invention, the cylindrical wall 1 is formed of a conical cylindrical wall 1a, a cylindrical wall 1b, an elliptical cylindrical wall, an elliptical conical cylindrical wall, a rectangular cylindrical wall, and a rectangular conical cylindrical shape. Various forms such as a wall, a polygonal cylindrical wall, and a polygonal pyramid-shaped wall are conceivable. The conical cylindrical wall 1a and the cylindrical wall 1b are preferable from the viewpoint that they can be opened with a smaller force. Of these, the cylindrical wall 1 is implemented as the cylindrical wall 1b, and more specifically, a conical cylindrical shape into which a screw plug is inserted. A screw plug opening device in which a wall 1a and a ceiling portion 2 that covers an opening on the small diameter side of the conical cylindrical wall 1a are integrally formed using an elastomer as a material, and the large diameter of the conical cylindrical wall 1a From the opening peripheral wall on the side, from one-quarter to one-half of the circumferential length, from one-fourth of the axial length When implemented as a configuration in which a cut portion 3 having a size of one half is formed and the hole 4 is formed in the ceiling portion 2, the cylindrical wall 1 is a conical cylindrical wall 1a, and is opened from the ceiling portion. Since the diameter of the circular cross section is gradually increased toward the portion, in addition to the above-described effects, the cap can be easily fitted into the instrument through the opening having a large diameter. Moreover, the diameter of the cap to be opened can be widened, that is, when the diameter of the cap to be opened is relatively small, the cap is closely attached to the small diameter portion of the device, and the cap is attached to the device. If the cap to be opened is relatively large in diameter, the cap is in close contact with the large diameter part of the instrument, and the cap is shallowly inserted into the instrument. Therefore, regardless of the diameter of the cap, the device can be easily opened with a small force by bringing the instrument into close contact with the cap. Of course, the cylindrical wall 1 may be implemented as a polygonal cylindrical wall, a polygonal cylindrical wall, or the like when a polygonal cap is used. For a general substantially cylindrical wall cap, the cylindrical wall 1 is an elliptical cylindrical wall, an elliptical conical cylindrical wall, a rectangular cylindrical wall, a rectangular conical cylindrical wall, a polygonal cylindrical wall, a polygonal shape. When implemented as a conical cylindrical wall or the like, a gap of a non-contact portion is formed between a general substantially cylindrical wall cap and an instrument, and the adhesion to the general substantially cylindrical wall cap is reduced, but the cap There is an advantage that the gap between the non-contact portions of the appliance can be used as an air circulation hole.

  The hole 4 formed in the ceiling part 2 can be implemented in various shapes such as a circle, a rectangle, a polygon, etc., but the shape of the peripheral wall of the part of the cylindrical wall 1 where the ceiling part 2 is formed is used. It is preferable to carry out with the size which can hold | maintain, and it is more preferable to form in the size which can insert a finger | toe further.

  The cut portion 3 formed on the opening peripheral wall of the cylindrical wall 1 has a size that is 1/4 to 1/2 of the circumferential length and 1/4 to 2 minutes of the axial length. In the range of 1, the shape can be implemented in any shape, but after making the size of the entire device according to the cap to be used, the open state can be confirmed from the cut portion 3, and If there is a ring body or spiral strip connected to the opening edge of the cap or the opening edge of the lower end of the cap at the remaining portion of the peripheral wall of the opening, the effect is that it can be safely covered and covered Can be carried out in such a size and shape that can be obtained.

  The material is made of an elastomer that is rich in elasticity and has excellent adhesion to the cap and high friction, and can be implemented using styrene, polyester, olefin, or the like.

  Embodiments of the present invention will be described below together with illustrated examples. 1 and 2 are views showing a first embodiment of the present invention. FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a perspective view showing a use state.

  The screw stopper opening device of the first embodiment uses a lavalon which is one of styrene-based thermoplastic elastomers exhibiting the most excellent rubber elasticity / flexibility among various elastomers, and a cone as an example of the cylindrical wall 1. The cylindrical wall 1a and the circular flat plate-like ceiling portion 2 are integrally formed.

  The conical cylindrical wall 1a has a configuration in which the small diameter side is covered with a circular flat plate-like ceiling portion 2, the large diameter side is an opening, and the diameter of the circular section is from the side where the ceiling portion 2 is formed toward the opening. The inner diameter of the smallest diameter portion on the ceiling 2 side is 26 mm, and the inner diameter of the largest diameter portion on the opening side is 30 mm. And the size of about 1/2 of the length in the circumferential direction and about 1/2 of the length in the axial direction (13 mm from the lower end of the 30 mm in the axial direction as seen in the front view of FIG. 2). In FIG. 2, the cut portion 3 is formed in a rectangular shape in front view.

  As described above, the ceiling portion 2 is formed in a circular flat plate shape, covers the small diameter side of the conical cylindrical wall 1a, and is formed with a circular hole 4 concentric with the circular shape of the ceiling portion 2.

  The screw stopper opening device of this example has an axial length of 30 mm, an outer diameter on the small diameter side of the upper end is 30 mm, an outer diameter on the large diameter side of the lower end is 34 mm, a thickness of 2 mm, and the diameter of the hole 4 is As described above, the inner diameter on the small diameter side of the upper end is 26 mm and the inner diameter on the large diameter side is 30 mm. However, these can be implemented by appropriately changing according to the cap to be used.

  As shown in FIG. 4, the method of use shows an example of opening the cap P of the plastic bottle B as an example. From the large-diameter side opening portion of the screw-plug opening device to the small-diameter side ceiling portion 2, the cap P is inserted until a moderately tight tightening force is applied to the outer peripheral side surface of the cap P. While grasping the conical cylindrical wall 1a and confirming the opening state from the cut portion 3, it is twisted in the opening direction to open the plug. Regarding the method of opening the cap, the cap P is inserted into the screw plug opening device, and the screw plug opening device is twisted in the opening direction to completely open the cap P, then the finger is put into the hole 4 and the cap P is screwed. The cap P may be dropped and removed from the stopper, or the cap P is twisted in the opening direction from the state in which the cap P is fitted into the screw stopper, and the state where the cap P is firmly tightened is released. While screwed into B, lift the screw cap opener up, put your finger into the hole 4 and press the cap P to remove the screw cap opener, then open the cap P by hand Twist to complete opening, or other methods may be used. In any case, the cap P in a tightly closed state can be easily released with a small force without damaging the hand to be in the open state.

  FIGS. 5 to 7 are views showing the screw stopper opening device of the second embodiment of the present application. The cylindrical wall 1 described in the first embodiment is a cylindrical wall 1b, and the shaft of the cylindrical wall 1b is shown in FIGS. It is set as the structure which covers the opening part of the end of a direction with the ceiling part 2 of circular flat form. Then, the cut portion 3 is formed in an inverted V-shape when viewed from the front in FIG. 6, whose maximum width is one half of the circumferential length and one half of the axial length. The hole 4 formed in the ceiling part 2 is implemented as a regular hexagonal shape. About another structure and usage, it is the same as that of the screw stopper opening instrument in the said 1st Example.

  Although the embodiment considered to be a representative example of the present invention has been described above, the screw cap opening device of the present invention is not limited to the above-described embodiment. In view of the size of the cap to be used, it may be carried out in an appropriate size, and within the range having the above-mentioned constituent requirements referred to in the present invention, achieving the object referred to in the present invention, and having the effects referred to in the present invention. It can be implemented with appropriate modifications.

  The screw plug opening device of the present invention is a screw plug opening device made of an elastomer, and is capable of easily and safely removing a tightly tightened cap with a small force. It is scheduled to be marketed as an instrument that can provide an effect not easily found in conventional screw stoppers made of elastomer, which is easy to insert and remove the cap from the stopper.

The perspective view of 1st Example. The front view of 1st Example. The side view of 1st Example. The perspective view which shows the use condition of 1st Example. The perspective view of 2nd Example. The front view of 2nd Example. The side view of 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical wall 1a Conical cylindrical wall 1b Cylindrical wall 2 Ceiling part 3 Cut part 4 Hole P Cap B Plastic bottle

Claims (2)

A screw formed by integrally forming a cylindrical wall (1) to be fitted in close contact with a screw plug and a ceiling (2) covering an opening at one end of the cylindrical wall (1) in the axial direction. It is a plug opening device, and is provided with an opening peripheral wall at the other end in the axial direction of the cylindrical wall (1). A cut part (3) with a size of 1/2 to 1/2 is formed, the open state can be confirmed from the cut part at the time of opening, and the remaining circumferential part without being cut A screw cap opening, characterized in that the ring body and the spiral strip connected to the opening edge of the lower end of the cap are covered, and a hole (4) is formed in the ceiling portion (2). Instruments. A screw formed by integrally forming a conical cylindrical wall (1a) to be fitted in close contact with a screw plug and a ceiling (2) covering an opening on the small diameter side of the conical cylindrical wall (1a) using an elastomer as a raw material A plug-opening device, which is formed on the opening peripheral wall on the large-diameter side of the conical cylindrical wall (1a) by a quarter to a half of the circumferential length and a quarter of the axial length. The cut part (3) of the size of 1 to 1/2 is formed, and the open state can be confirmed from the cut part at the time of opening, and the remaining circumferential part is not cut. A screw cap opening and closing device characterized in that the ring body and the spiral strip connected to the opening edge of the lower end of the cap are covered, and a hole (4) is formed in the ceiling portion (2). .

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