JP2020169050A - Opening tool - Google Patents

Abstract

To make it easy to open a pull-top can.SOLUTION: An opening tool 1 of this invention is provided with a fitting member 10 and a lever member 20. The lever member 20 is provided with an operation part 23 an opening person operates and an opening protrusion part 24a formed to extend toward above a lid piece part of a pull-top can.SELECTED DRAWING: Figure 3

Description

The present invention relates to an opening device used when opening a pull-top can.

Conventionally, as disclosed in Patent Document 1, for example, pull-top cans having a pull-top type can lid are widely used for cans such as beverages. The pull top is provided with a can lid body having a lid piece surrounded by a part to be broken and a pull tab for applying a pressing force from above to the lid piece, and the pull tab is fixed to the can lid body. Has been done. By raising this pull tab, a pressing force from above is applied to the lid piece portion to break the lid piece portion along the planned break portion, and an opening is formed in the can lid main body.

A general pull tab can be raised by hooking a fingertip or nail on the ring part and pulling it up, but since the ring part and the can lid body are close to each other before opening, the ring part and the can lid body It is difficult to insert your fingertips or nails between them. Also, even if you can insert your fingertips or nails between the ring and the can lid body, a large amount of force is required to raise the pull tab, and for those with weak fingertips, opening the pull top is difficult. It was sometimes difficult.

Therefore, for example, an opening device and an opening assisting tool as disclosed in Patent Documents 2 to 4 have been devised. The instrument of Patent Document 2 has a rod-shaped handle rod and a thin-walled locking piece attached to the tip of the handle rod, and the handle is held while the locking piece is inserted into the ring portion of the pull tab. It is configured to raise a pull tab by pushing down on the base end side of the rod.

Further, the device of Patent Document 3 includes a leg placed near the center of the pull top, a locking arm protruding from the intermediate position of the leg and locking to the ring portion of the pull tab, and a pressing plate fixed to the upper end of the leg. By pushing down the pressing plate, the locking arm is swung upward with the lower end of the leg as a fulcrum, and the swing of the locking arm causes a pull tab.

Further, the instrument of Patent Document 4 has a main body member on which the palm is placed and a locking member fixed to the lower surface of the main body member, and the locking member is a pull tab ring portion and a can lid main body. It is configured to raise a pull tab by inserting it in between and swinging the main body member upward.

Japanese Unexamined Patent Publication No. 2004-91015 Registered Utility Model No. 3129831 Registered Utility Model No. 301214 Japanese Patent No. 5124061

By raising the pull tab by using a locking piece or the like that locks to the pull tab as in Patent Documents 2 to 4, it is not necessary to insert a fingertip or a claw between the ring portion and the can lid body. Further, if a force is applied to the pull tab through a member having a certain length such as the gripping rod of Patent Document 2, the pressing plate of Patent Document 3, and the main body member of Patent Document 4, the opening person can be opened by the principle of leverage. The power of is small.

However, in the case of Patent Document 2, it is necessary to insert the locking piece into the ring portion of the pull tab, and since the ring portion is small, the workability at the time of inserting is poor. Moreover, when pushing down the handle rod, the handle rod is not fixed to the can, so the handle rod must be pressed against the edge of the can and held so as not to slip from the edge. Workability is poor.

Further, also in the case of Patent Document 3, it is necessary to insert the locking arm into the ring portion of the pull tab, and when pushing down the pressing plate, the legs must be held so as not to slip from the upper surface of the can lid body. The workability is poor.

Further, in the case of Patent Document 4, it is necessary to insert the locking member between the ring portion of the pull tab and the can lid main body, but the gap between the ring portion and the can lid main body is small, so that workability is poor. Moreover, since the main body member is only held by hand and is not fixed to the can, the main body member must be held so as not to slip from the can, and workability is also poor in this respect. ..

The present invention has been made in view of the above points, and an object of the present invention is to make it easy to open a pull-top.

In order to achieve the above object, in the present invention, a lever member rotating around a horizontal axis is attached to a fitting member fitted to the upper part of the pull-top can, and a lid piece portion of the pull-top is placed on the tip side of the lever member. A protrusion for opening that abuts a part is formed.

The first invention is an opening device for opening a pull-top can in which a pull tab is fixed to a can lid body having a lid piece portion surrounded by a part to be broken, and a fitting member fitted to the upper portion of the pull-top can. A lever member rotatably attached around an axis extending horizontally with respect to the fitting member and operated by an opener is provided, and an opener is provided on the base end side of the lever member with respect to the shaft. An operation unit to be operated is provided, and the tip side of the lever member with respect to the shaft is formed so as to extend above the lid piece portion, and the tip side is opened so as to come into contact with a part of the lid piece portion. It is characterized in that the protrusion is formed so as to protrude downward.

According to this configuration, the opening device is fixed to the pull-top can and stabilized by fitting the fitting member to the upper part of the pull-top can. After the fitting member is fitted to the upper part of the pull-top can, when the opening person operates the operation part of the lever member so that the tip side of the lever member moves downward, the lever member rotates about the axis and the tip The opening protrusion on the side abuts on a part of the lid piece of the pull top. When the opening person further applies force in the same direction in this state, the opening protrusion of the lever member strongly pushes a part of the lid piece portion, thereby breaking the planned break portion without using the pull tab. The lid piece is bent toward the inside of the can, and an opening is formed in the can lid body.

When operating the lever member, since the opening device is fixed to the pull-top can, the lever member is held in a stable state even when a force is applied by the opening person, and workability is improved. Further, since it is not necessary to insert the locking piece into the ring portion or the gap between the ring portion and the can lid main body as in the conventional example, workability is improved in this respect as well.

The second invention is characterized in that the opening protrusion of the lever member is arranged so as to correspond to one side of the lid piece in the width direction.

That is, the fact that the opening protrusion is arranged on one side of the lid piece in the width direction means that the lid is closer to the planned breakage portion. Therefore, when the lever member is operated, a portion close to the planned break portion is pushed by the opening protrusion, so that the planned break portion is easily broken and the opening is further facilitated.

A third aspect of the present invention is characterized in that, on the tip end side of the lever member, a blade portion for breaking a portion of the can lid body outside the planned fracture portion is provided.

According to this configuration, when the lever member is operated so that the tip end side of the lever member moves downward, the planned fracture portion is broken as described above, and the blade portion breaks the outer portion from the planned fracture portion. As a result, a wider range is opened than the portion surrounded by the planned fracture portion, so that the opening area of the can lid main body becomes large. Therefore, for example, when the beverage is contained in a pull-top can, the outflow amount of the beverage per unit time can be increased.

A fourth aspect of the invention is characterized in that the fitting member has an annular portion surrounding the upper portion of the pull-top can, and the shaft is provided outside the annular portion.

According to this configuration, since the annular portion of the fitting member is fitted so as to surround the upper part of the pull-top can, it becomes difficult for the fitting member to move in any direction in the radial direction of the pull-top can, and the can is opened. You will be able to securely fix the equipment.

In a fifth aspect of the invention, the tip end side of the lever member is formed so as to extend inward from the portion supported by the shaft, and the base end side of the lever member is the shaft. It is characterized in that it is formed so as to extend upward from a portion supported by the lever and then extend while curving until it is located above the tip side.

According to this configuration, when the opening device is fixed to the pull-top can, the operating portion of the lever member is separated from the fitting member upward. When the opening person pushes the operation part downward, the lever member rotates about the axis and the tip side of the lever member moves downward, the opening protrusion pushes a part of the lid piece part, and the part to be broken Breaks. That is, the pull-top can can be opened by a simple operation of pushing the operation portion of the lever member. Further, when the opening operation is performed by the opening person, a force acts downward on the opening device, so that the opening device can be securely fixed to the pull-top can.

A sixth aspect of the invention is characterized in that a pull tab fitting portion formed so that at least a part of the pull tab is fitted is provided inside the annular portion of the fitting member.

That is, since the relative positional relationship between the pull tab and the lid piece is specified for all pull top cans, the opening device can be pulled by fitting at least a part of the pull tab into the pull tab fitting portion of the fitting member. It can be positioned at a predetermined position. Thereby, the opening protrusion can be arranged so as to correspond to the lid piece portion.

According to the present invention, the opening device can be fixed to the pull-top can by fitting the fitting member to the upper part of the pull-top can, and by operating the lever member in this fixed state, the circumference of the lid piece is broken. Since the planned portion can be broken and the lid piece portion can be bent toward the inside of the can to open the pull top, the pull top can be easily opened.

It is a perspective view which shows the opening device which concerns on embodiment of this invention, and the pull-top can which is opened by an opening device. It is a top view of a pull-top can. It is an exploded perspective view of the opening device. It is a top view of the fitting member. It is a left side view of a fitting member. FIG. 5 is a sectional view taken along line VI-VI in FIG. It is a left side view of a lever member. It is a front view of a lever member. It is a top view of the lever member. FIG. 7 is a sectional view taken along line X-X in FIG. It is a perspective view which shows the state which the opening device is fixed to a pull-top can. It is a top view which shows the positional relationship between a lever member and a pull-top can when an opening device is fixed to a pull-top can. It is a figure corresponding to FIG. 11 when the lever member is pushed all the way. It is a top view of the pull-top can opened by the opening tool.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 shows an opening device 1 and a pull-top can 100 according to an embodiment of the present invention. First, the pull-top can 100 will be described. The pull-top can 100 is a stayion pull-tab type can containing a beverage such as beer or juice, and includes a can body 101 and a can lid main body 102. The upper portion of the can body 101 is a reduced diameter portion 101a formed so as to be located inward in the radial direction toward the upper end. The can lid main body 102 has a lid piece portion 102b surrounded by a planned breakage portion 102a. The planned break portion 102a is a portion that is fragilely configured as compared with other parts of the can lid main body 102, and the force required for breaking is set lower than that of other parts of the can lid main body 102. The lid piece portion 102b is integrally provided with the can lid main body 102.

Further, a pull tab 103 is fixed to the can lid main body 102 by a rivet 104 or the like. The longitudinal direction of the pull tab 103 is set as shown in FIG. 2, and the intermediate portion in the longitudinal direction thereof is fixed to the can lid main body 102 by the rivet 104. One end of the pull tab 103 is positioned directly above the lid piece 102b. Further, a ring portion 103a is provided on the side of the pull tab 103 opposite to the lid piece portion 102b side. The ring portion 103a and the can lid main body 102 are in close proximity to each other. By pulling the ring portion 103a of the pull tab 103 upward, the pull tab 103 is generated, and as a result, a pressing force from above acts on the lid piece portion 102b to break the planned break portion 102a, and one of the lid piece portions 102b. The portion is bent toward the inside of the can body 101 in a state where the portion is connected to the can lid main body 102. When the lid piece portion 102b is bent toward the inside of the can body 101, the trace of the lid piece portion 102b of the can lid main body 102 is opened and the pull-top can 100 is opened.

(Overall configuration of opening device 1)
The opening device 1 is a device for opening the pull-top can 100, and is configured to be able to open the pull-top can 100 as shown in FIG. 14 without using the pull tab 103. Reference numeral 105 in FIG. 14 indicates an opening formed in the can lid main body 102.

As shown in FIG. 3, the opening device 1 includes a fitting member 10 that fits on the upper part of the pull-top can 100, a lever member 20 that is operated by the opening person, and a shaft that connects the lever member 20 to the fitting member 10. It has 30 and. The fitting member 10 and the lever member 20 may be made of metal or resin. When it is made of metal, for example, stainless steel or the like can be used. Further, the shaft 30 may also be made of metal or resin.

As shown in each figure, the front side and the back side of the opening device 1 are defined. Further, the side to the left when viewed from the front side of the opening device 1 is defined as the left, and the side to the right is defined as the right. This is defined only for convenience of explanation, and does not limit the direction in which the opening device 1 is used or the direction in which it is manufactured. Which direction may be the front side. Further, the back side may be the rear side and the front side may be the front side. Moreover, the depth direction and the front-back direction are the same.

(Structure of fitting member 10)
As shown in FIGS. 3 and 4, the fitting member 10 has an annular portion 11 surrounding the upper part of the pull-top can 100 and a pull tab fitting portion 12 provided inside the annular portion 11. Is integrally molded. The annular portion 11 is formed so as to substantially match the outer shape of the upper portion of the pull-top can 100, and has a plate shape having a predetermined length in the vertical direction. The upper part of the pull-top can 100 is fitted inside the annular portion 11 in a state of being inserted. As a result, the fitting member 10 is less likely to move relative to any direction in the radial direction of the pull-top can 100. With the pull-top can 100 fitted to the annular portion 11, the vertical dimension of the annular portion 11 is set so that the lower end portion of the annular portion 11 reaches the reduced diameter portion 101a of the can body 101.

The pull tab fitting portion 12 is composed of a plate-shaped portion extending inward of the annular portion 11 from an intermediate portion in the vertical direction on the inner peripheral surface of the annular portion 11. When the upper portion of the pull-top can 100 is inserted inside the annular portion 11, the upper portion of the pull-top can 100 comes into contact with the lower surface of the pull tab fitting portion 12. As a result, the relative positions of the fitting member 10 and the pull-top can 100 in the vertical direction are determined. Therefore, the pull tab fitting portion 12 also functions as a stopper for the pull top can 100.

The pull tab fitting portion 12 is not provided on the inner side portion inside the annular portion 11, but is provided only on the front side portion. Therefore, the inner portion of the annular portion 11 is open in the vertical direction. Further, the pull tab fitting portion 12 is formed with a notch portion 12a having a shape corresponding to the outer shape of the pull tab 103. As shown in FIG. 4, the notch portion 12a is open toward the back side, and is continuously formed from this open portion to the front side portion of the pull tab fitting portion 12. The width direction dimension (horizontal dimension) of the notch portion 12a is set shorter than the front-rear direction dimension (depth direction dimension) of the notch portion 12a. The width direction dimension of the notch portion 12a is set to be slightly longer than the left-right dimension of the pull tab 103, and the front-rear direction dimension of the notch portion 12a is larger than the dimension in the same direction of the pull tab 103. It is set slightly longer. As a result, at least the front side of the pull tab 103 fits into the notch portion 12a. The shape of the notch portion 12a may be any shape as long as it fits the general pull tab 103, and is not limited to the shape shown in the drawing.

A protruding portion 12b that projects downward is provided on the peripheral edge of the cutout portion 12a in the pull tab fitting portion 12. The protruding portion 12b is continuous over the entire peripheral edge portion of the cutout portion 12a. By providing the protruding portion 12b, the pull tab 103 is surely fitted to the pull tab fitting portion 12 even if the position of the pull tab 103 is slightly different in the vertical direction.

As shown in FIG. 1 and the like, the fitting member 10 includes a support shaft portion 13 that supports the shaft 30. As shown in FIG. 5, the support shaft portion 13 is integrally molded in the inner portion of the annular portion 11, and projects from the inner portion of the annular portion 11 toward the inner side and also protrudes downward. It is formed to do. Therefore, the shaft 30 is provided on the outside of the annular portion 11.

As shown in FIGS. 3 and 4, the left-right intermediate portion 13a of the support shaft portion 13 is formed lower than the left side portion 13b and the right side portion 13c. As shown in FIGS. 3 and 4, a left groove portion 13d is formed between the intermediate portion 13a and the left side portion 13b of the support shaft portion 13, and between the intermediate portion 13a and the right side portion 13c of the support shaft portion 13. The right groove portion 13e is formed in. The left groove portion 13d and the right groove portion 13e extend in the front-rear direction.

A shaft insertion hole 13f extending substantially horizontally in the left-right direction is formed in the support shaft portion 13. The shaft insertion hole 13f is formed from the left side portion 13b to the right side portion 13c of the support shaft portion 13, and is held in a state where the shaft 30 is inserted into the shaft insertion hole 13f. The left end portion of the shaft insertion hole 13f opens on the left side surface of the left side portion 13b, and the right end portion of the shaft insertion hole 13f opens on the right side surface of the right side portion 13c. The shaft insertion hole 13f may be formed in the left side portion 13b and the right side portion 13c, respectively. In this case, the shaft 30 may be prepared to be inserted into the shaft insertion hole 13f formed in the left side portion 13b and the shaft 30 to be inserted into the shaft insertion hole 13f formed in the right side portion 13c.

As shown in FIG. 5, the shaft insertion hole 13f is located below the upper end portion of the annular portion 11. Further, with the opening device 1 fixed to the pull-top can 100, the shaft insertion hole 13f is located below the upper end of the pull-top can 100.

(Structure of lever member 20)
As shown in FIG. 1, the lever member 20 is made of a plate material, is rotatably attached around a shaft 30 extending horizontally with respect to the fitting member 10, and is operated by an opener. .. As shown in FIG. 8, a left vertical plate portion 21 and a right vertical plate portion 22 are provided in the intermediate portion of the lever member 20. As shown in FIG. 3, the right vertical plate portion 22 is formed so as to project downward from the right edge portion in the intermediate portion of the lever member 20, and the shaft 30 is formed at the lower end portion of the right vertical plate portion 22. A right insertion hole 22a to be inserted is formed. The left vertical plate portion 21 is configured in the same manner as the right vertical plate portion 22, and has a left insertion hole 21a (shown by a broken line only in FIG. 8) into which the shaft 30 is inserted.

The left vertical plate portion 21 is inserted into the left groove portion 13d of the fitting member 10, and the right vertical plate portion 22 is inserted into the right groove portion 13e of the fitting member 10. There is. When the shaft 30 is inserted into the shaft insertion hole 13f of the fitting member 10 with the left vertical plate portion 21 and the right vertical plate portion 22 of the lever member 20 inserted into the left groove portion 13d and the right groove portion 13e of the fitting member 10, the shaft 30 is inserted. The shaft 30 is inserted into the left insertion hole 21a and the right insertion hole 22a of the lever member 20. As a result, the lever member 20 and the fitting member 10 are connected by the shaft 30, and the lever member 20 and the fitting member 10 can be relatively rotated around the shaft 30. The shaft 30 can be fixed by press-fitting into the shaft insertion hole 13f of the fitting member 10, for example.

As shown in FIG. 1, an operation unit 23 operated by an opener is provided on the base end side of the lever member 20 with respect to the shaft 30. On the other hand, the portion 24 of the lever member 20 on the tip side of the shaft 30 is formed so as to extend above the lid piece portion 102b with the opening device 1 fixed to the pull-top can 100.

The operation unit 23 is formed so as to extend upward from a portion supported by the shaft 30 (left vertical plate portion 21 and right vertical plate portion 22) and then extend while curving until it is located above the tip side portion 24. ing. As shown in FIG. 10, the operation portion 23 is curved and molded so as to follow the palm when the opening person pushes the operation portion 23 with, for example, the palm. As a result, a large force can be easily applied to the operation unit 23.

The tip end side portion 24 of the lever member 20 is formed so as to extend from the portion supported by the shaft 30 inward of the annular portion 11 through above the intermediate portion 13a of the fitting member 10. The left-right dimension of the tip end side portion 24 of the lever member 20 is set shorter than the left-right dimension of the operation unit 23. The tip side portion 24 is gently curved so that the central portion in the left-right direction is located at the bottom.

At the tip of the tip side portion 24 of the lever member 20, an opening protrusion 24a that comes into contact with a part of the lid piece portion 102b of the pull-top can 100 is formed so as to project downward. The opening protrusion 24a is integrally molded with the lever member 20 by bending the plate material constituting the lever member 20. Further, the opening protrusion 24a is arranged so as to correspond to the width direction (left-right direction) of the lid piece portion 102b. FIG. 12 is a plan view showing the positional relationship between the lever member 20 and the pull-top can 100 in a state where the opening device 1 is fixed to the pull-top can 100, omitting the fitting member 10, and as shown in this figure, the lever. The lateral dimension W1 of the tip end side portion 24 of the member 20 is set to be slightly shorter than the lateral dimension W2 of the general lid piece portion 102b. In this embodiment, the opening protrusion 24a is formed at the left end portion of the tip end side portion 24 of the lever member 20, whereby the opening protrusion 24a is arranged on the front side of the lid piece portion 102b immediately above the left end portion. Become. The opening protrusion 24a may be formed at the right end portion of the tip end side portion 24, or may be formed at the left-right intermediate portion of the tip end side portion 24. The shape of the opening protrusion 24a may be long in the left-right direction.

As shown in FIGS. 7 and 8, an upper protrusion 24b that projects upward is formed at the tip of the tip side portion 24 of the lever member 20. The upper protrusion 24b is integrally molded with the lever member 20 by bending a part of the plate material constituting the lever member 20 upward, and is located at the right end portion of the tip end side portion 24. The intermediate portion 24c between the opening protrusion 24a and the upper protrusion 24b at the tip of the tip side portion 24 of the lever member 20 is curved so that the central portion in the left-right direction is located at the innermost side. As a result, as shown in FIG. 12, the tip end side portion 24 of the lever member 20 can be prevented from coming into contact with the back side portion of the pull tab 103.

As shown in FIGS. 7 to 9, the left edge portion and the right edge portion of the tip end side portion 24 of the lever member 20 are the left side blade portion 24d and the right side blade portion 24e, respectively. The left side blade portion 24d and the right side blade portion 24e extend linearly in the front-rear direction from the tip end of the tip end side portion 24 toward the base end, and the outer portion of the can lid main body 102 is broken from the planned break portion 102a. This is for expanding the opening area of the can lid main body 102 after opening. The distance between the left blade portion 24d and the right blade portion 24e in the left-right direction can be set to, for example, about 20 mm to 25 mm.

(How to use the opening device 1)
Next, how to use the opening device 1 will be described. First, as shown in FIG. 1, the opening device 1 is arranged above the pull-top can 100, and then the upper portion of the pull-top can 100 is inserted into the annular portion 11 of the fitting member 10 as shown in FIG. At this time, since the pull tab fitting portion 12 is formed with a notch portion 12a having a shape corresponding to the outer shape of the pull tab 103, the fitting member 10 is fitted so that the front side of the pull tab 103 is fitted into the notch portion 12a. To position. As a result, the fitting member 10 can be easily positioned in the circumferential direction. When the upper portion of the pull-top can 100 is completely inserted into the annular portion 11 of the fitting member 10, the upper portion of the pull-top can 100 comes into contact with the lower surface of the pull-tab fitting portion 12 and the fitting member 10 and the pull-top can 100 are in the vertical direction. Positioning is done.

By fitting the fitting member 10 to the upper part of the pull-top can 100 as described above, the opening device 1 is fixed to the pull-top can 100, and the fitting member 10 can be placed in any direction in the radial direction of the pull-top can 100. It becomes difficult to move, and the opening device 1 becomes stable. Further, the opening protrusion 24a of the lever member 20 is arranged directly above the left end portion on the front side of the lid piece portion 102b of the pull top can 100, and the upper protrusion portion 24b is arranged on the right end portion on the front side of the lid piece portion 102b. It will be placed directly above.

After that, when the opening person applies a force to the operating portion 23 of the lever member 20 in the direction (downward) of the arrow 200 shown in FIG. 11, the lever member 20 has a shaft 30 so that the operating portion 23 moves downward. It rotates around. Since the direction of the force applied at this time is the direction in which the upper portion of the pull-top can 100 is fitted to the fitting member 10, the opening device 1 can be securely fixed to the pull-top can 100.

As the lever member 20 rotates, the tip side portion 24 also moves downward, whereby the opening protrusion 24a comes into contact with the vicinity of the left end portion of the lid piece portion 102b of the pull-top can 100. When the opening person further applies a downward force in this state, the opening protrusion 24a presses the vicinity of the left end portion of the lid piece portion 102b downward, and the left side of the planned breaking portion 102a begins to break. As the lever member 20 rotates, the opening protrusion 24a moves further downward and enters the can body 101, so that the planned break portion 102a breaks in a wide range. That is, by arranging the opening protrusion 24a at the left end portion, when the planned fracture portion 102a is broken, only a part thereof can be broken with a small force at the start of the fracture, and then the planned fracture portion The breaking range of 102a can be gradually expanded.

As the lever member 20 further rotates, the tip end side portion 24 enters the can body 101. As a result, the lid piece portion 102b is pushed not only by the left side portion of the tip side portion 24 but also by the right side portion of the tip side portion 24 and bent toward the inside of the can body 101, and as shown in FIG. An opening 105 is formed in 102. At this stage, the opening operation is completed by removing the opening device 1 from the pull-top can 100. Further, as described below, the lever member 20 may be further rotated without removing the opening device 1 from the pull-top can 100.

When the lever member 20 is further rotated, the left blade portion 24d and the right blade portion 24e move downward and abut on the outer portion of the can lid main body 102 than the planned fracture portion 102a to cut the outer portion. .. In FIG. 14, the portions cut by the left blade portion 24d and the right blade portion 24e are indicated by reference numerals 105a and 105b, respectively. The left side cutting portion 105a and the right side cutting portion 105b of the can lid main body 102 are bent into the can body 101 by the tip end side portion 24 of the lever member 20. As a result, a wider range than the portion surrounded by the planned fracture portion 102a is opened, so that the opening area of the lid body 102 becomes large.

(Action and effect of the embodiment)
As described above, according to the opening device 1 according to this embodiment, the opening device 1 can be fixed to the pull-top can 100 by fitting the fitting member 10 to the upper part of the pull-top can 100, and this fixing can be performed. By operating the lever member 20 in this state, the planned break portion 102a around the lid piece portion 102b can be broken, the lid piece portion 102b can be bent toward the inside of the can body 101, and the pull top can be opened. The pull-top can be easily opened.

Further, since the opening protrusion 24a is arranged to the left, it can be brought closer to the planned break portion 102a, and the part close to the planned break portion 102a can be pushed by the opening protrusion 24a when the lever member 20 is operated. .. As a result, the planned break portion 102a is easily broken, and opening is made even easier.

Further, when the lever member 20 is operated, the planned break portion 102a is broken, and the left blade portion 24d and the right blade portion 24e of the lever member 20 can break a portion outside the planned break portion 102a. As a result, the opening area of the lid body 102 is increased, so that, for example, when the beverage is contained in the pull-top can 100, the outflow amount of the beverage per unit time can be increased.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

As described above, the opening device according to the present invention can be used when opening a stayion pull-tab type pull-top can.

1 Opening device 10 Fitting member 11 Ring part 12 Pull tab fitting part 20 Lever member 23 Operating part 24 Tip side part 24a Opening protrusion 24d Left blade part 24e Right blade part 100 Pull top can 102 Can lid body 102a Expected breakage part 102b Lid piece 103 pull tab

Claims (6)

In an opening device for opening a pull-top can in which a pull tab is fixed to a can lid body having a lid piece surrounded by a planned breakage portion.
A fitting member fitted to the upper part of the pull-top can and
A lever member that is rotatably attached around an axis extending horizontally with respect to the fitting member and is operated by an opener is provided.
An operation unit operated by the opening person is provided on the base end side of the lever member with respect to the shaft.
The tip side of the lever member with respect to the shaft is formed so as to extend above the lid piece portion, and an opening protrusion abutting a part of the lid piece portion projects downward on the tip side. An opening device characterized in that it is formed in such a manner. In the opening device according to claim 1,
An opening device characterized in that the opening protrusion of the lever member is arranged so as to correspond to one side of the lid piece in the width direction. In the opening device according to claim 1 or 2.
An opening device characterized in that a blade portion for breaking a portion outside the planned breaking portion of the can lid main body is provided on the tip end side of the lever member. In the opening device according to any one of claims 1 to 3.
The fitting member has an annular portion that surrounds the upper part of the pull-top can.
The opening device is characterized in that the shaft is provided on the outside of the annular portion. In the opening device according to claim 4,
The tip end side of the lever member is formed so as to extend inward of the annular portion from the portion supported by the shaft.
The opening device is characterized in that the base end side of the lever member is formed so as to extend upward from a portion supported by the shaft and then extend while curving until it is located above the tip side. .. In the opening device according to claim 4 or 5.
An opening device characterized in that a pull tab fitting portion formed so as to fit at least a part of the pull tab is provided inside the annular portion of the fitting member.

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