Round cutter

Abstract

To provide a round cutter capable of adequately forming a notch near a zip part, which is a desired location, when a sealed bag with a zip is opened.SOLUTION: A round cutter comprises an insertion part, into which one side of a sealed bag with a zip, provided with a zip part, is inserted, and a space part allowing for further insertion of the sealed bag with the zip. The insertion part is provided with a regulation part 32 that restricts the zip part from inserting into the space part. The space part comprises: a round blade part 36 that can approach and retract from one surface side of the sealed bag with the zip, and which, when approaching, is bent so as to form a rounded notch extending from the vicinity of the zip part toward an end edge side of the one side, the end edge side being closed; and a support base part 21 located on the other surface side of the sealed bag with the zip, which supports pressure when the round blade part 36 approaches. Formed is a tongue piece part projecting from an end edge after an area between the zip part and a sealing part of the sealed bag with the zip, which is cleaved.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a round cutter, and particularly to a round cutter that can be used handheld and forms a tongue piece for opening a zip when opening a sealed bag with a zip.

Background Art

[0002] Conventionally, for the purpose of performing alignment and cutting operations in a stable posture, a round cutter has been known in which a sheet-like object to be cut is inserted into a slit and a cut is formed in a part of the sheet-like object by a cutting blade such as a U-shape (see, for example, Patent Document 1).

[0003] Also, in such a round cutter, alignment of the cutting position with respect to the sheet-like object is performed by abutting the sheet-like object against a vertical wall surface on the back side of the slit.

[0004] On the other hand, in recent years, some products such as confectionery and food are sold in sealed bags with zips, and it is well known that long-term preservation of the contents is possible by maintaining the sealed state by the zip by cutting off the edge side rather than the zip part.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the above-described round cutter, since positioning is performed by abutting the sheet-like object against the vertical wall surface on the back side of the cutting blade of the slit, there are cases where a cut cannot be made at an appropriate position.

[0007] That is, for the above-mentioned sealed bag with a zip in the unopened state, for example, a sealed bag 1 with a zip as shown in FIG. 10, or a sealed bag 2 with a zip as shown in FIG. 11, etc. are known.

[0008] In the sealed bag 1 with a zip shown in FIG. 10, in order to ensure the sealing performance before opening, the range L1A of the sealing portion 1A provided near one end edge is short, and as a result, the distance L1B from the zip portion 1B to one end edge is short.

[0009] On the other hand, the sealed bag 2 with a zip shown in FIG. 11 has a longer range L2A of the sealing portion 2A than the range L1A and is provided with a hanging hole 2C in order to be able to display the sealed bag 2 with a zip in a suspended state. As a result, the distance L2B from the zip portion 2B to one end edge is longer than the distance L1B.

[0010] Thus, in the positioning structure in which one end edge of the above-mentioned sheet-like object abuts against the vertical wall surface, regardless of the type of the sealed bag with a zip, there is a problem that a cut cannot be formed at a desired position, that is, near the zip portion. In some cases, there is also a problem that a cut is formed so that the zip portion is divided.

[0011] An object of the present invention is to provide a round cutter that can form a cut near the zip portion, which is a desired position, without excess or deficiency when forming a round cut in a sealed bag with a zip.

Means for Solving the Problems

[0012] In order to solve the above problems, the present invention provides a sealed bag with a zip, which presents a rectangular shape when viewed from the front in an unopened state containing contents, and at least one side is a sealed portion formed by joining and sealing two bag materials on the front and back, and a zip portion spanning the entire length is provided inside the sealed portion. The sealed bag with a zip is provided with an insertion portion into which the above-mentioned side is inserted and a space portion that allows further insertion of the sealed bag with a zip. The insertion portion is provided with a restricting portion that restricts the zip portion from entering the space portion. The space portion is provided with a round blade portion that can approach and separate from one side of the sealed bag with a zip, and when approaching, it is bent so as to form a round cut extending from the immediate vicinity of the zip portion toward the edge side of the above-mentioned side and closing the edge side. The space portion is also provided with a support base portion located on the other side of the sealed bag with a zip to support the pressure when the round blade portion approaches. After splitting the sealed bag with a zip between the zip portion and the sealed portion, a tongue piece portion protruding from the edge after splitting is formed so as to serve as a grip when the user opens the zip portion.

[0013] Accordingly, when forming a tongue piece near the zip portion after opening the sealed bag with a zip before opening, such as at the time of purchase, the entry of the zip portion from the insertion portion into the space portion is restricted so that it does not enter more than necessary, and it becomes possible to press the round blade portion against the vicinity of the zip portion regardless of the length of the sealed portion.

Effects of the Invention

[0014] According to the present invention, when forming a cut for the tongue piece in the sealed bag with a zip, the cut for the tongue piece can be formed in the vicinity of the zip portion, which is the desired position, without excess or deficiency.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0016] Next, the round cutter according to an embodiment of the present invention will be described with reference to the drawings. Note that the round cutter shown below can be applied to general zip-lock bags regardless of the length of the sealing part shown in FIGS. 10 and 11 described above. Therefore, in the following description, it will be described as the case of using the zip-lock bag 2 with a long sealing part (see FIG. 11) where it was difficult to form a tongue piece near the zip part. Also, since the specific structure of the zip part 2B is known, it is simply illustrated.

[0017] As shown in Fig. 1, the round cutter 10 includes a long rectangular base portion 20 in the insertion direction of the zip-sealed bag 2 (refer to the arrow A in Fig. 1(A); hereinafter, this direction is referred to as the "depth direction", the upstream side in the depth direction is referred to as "front" or "tip", and the downstream side is referred to as "rear" or "rear end"), a blade fixing portion 30 and a cover portion 40 rotatably provided via a support shaft 21 on the rear side of the base portion 20.

[0018] The base portion 20 is provided with a support base portion 22 made of a resin or rubber having cushioning properties on the upper surface 20a near the tip portion on the front side. This support base portion 22 is long on the rear side of the base portion 20 and is set to be longer than the longest length L2B from the zip portion 2B to one end edge, for example, with respect to an existing zip-sealed bag 2.

[0019] Also, on both sides near the rear end portion on the rear side of the base portion 20, metal support legs 23 standing up from the upper surface 20a are provided, and the support shaft 21 is fixed at both ends so as to have an axis in the width direction on the support legs 23.

[0020] Furthermore, the rear end portion 24a of a Z-shaped leaf spring 24 without a fold is fixed to the upper surface 20a near the rear end portion on the rear side of the base portion 20. Only the rear end portion 24a of this leaf spring 24 is fixed near the rear end of the base portion 20, and it becomes an upward free end portion 24b toward the front end side of the base portion 20.

[0021] As shown in Fig. 2, the blade fixing portion 30 includes a pedestal portion 31 in the shape of a bottom box open upward made of a hard material such as metal, a leaf spring-shaped regulating portion 32 disposed inside the pedestal portion 31, and a cutter portion 33 fixed near the tip of the pedestal portion 31.

[0022] The pedestal portion 31 has the free end portion 24b of the leaf spring 24 in pressure contact with the bottom surface 34a on the rear side of its bottom wall portion 34, and the tip side of the blade fixing portion 30 is constantly urged upward with the support shaft 21 as a rotation fulcrum.

[0023] The restricting portion 32 includes a plate-like portion 32a whose back side is fixed to the upper surface 34b of the bottom wall portion 34, and a restricting piece portion 32b that is bent downward in a substantially L-shape from the tip side that is the free end of the plate-like portion 32a.

[0024] This restricting piece portion 32b protrudes downward from a slit 34c (shown only in FIG. 2(B)) formed at the foremost end of the bottom wall portion 34.

[0025] The cutter portion 33 is fixed to the bottom surface 34a near the tip of the bottom wall portion 34, and includes, for example, a holder 35 made of a resin such as acrylic, and a substantially U-shaped round blade portion 36 that is held by the holder 35 and opens at the tip side.

[0026] As shown in FIG. 3, the holder 35 includes an outer holder 35a and an inner holder 35b so as to sandwich and hold the round blade portion 36 in a U-shape. Here, the outer holder 35a and the inner holder 35b are formed by cutting a rectangular base material with a laser or the like based on design data, and by making the cutting width (for example, the laser width) the thickness of the round blade portion 36, the round blade portion 36 can be held without any gap.

[0027] Note that the thickness of the holder 35 is set to be equal to or less than the height of the round blade portion 36, so that the cutting edge of the round blade portion 36 protrudes from the holder 35 as a whole. Also, as shown in FIG. 3(A), the width W2 of the restricting piece portion 32b is made narrower than the distance W1 between both ends of the round blade portion 36.

[0028] As a result, as shown in FIG. 4(A), until the lower end of the restricting piece portion 32b contacts the support base portion 22, the restricting piece portion 32b is positioned below the cutting edge of the round blade portion 36. Therefore, as shown in FIG. 4(B), the lower end of the restricting piece portion 32b abuts on the support base portion 22 before the cutting edge of the round blade portion 36, and then, as shown in FIG. 4(C), the restricting piece portion 32b floats upward against the biasing force of the restricting portion 32.

[0029] The cover part 40 is open downward by integral molding of resin or the like, and is formed in an upper box shape that covers the blade fixing part 30 from the outside.

[0030] With such a configuration, as shown in Fig. 1(A), between the regulating piece part 32b and the front side of the leading end of the support base part 22, it is set as an insertion part E1 into which one side of the sealed bag 2 with a zip is inserted, and between the regulating piece part 32b and the rear side of the leading end of the support base part 22, it can be set as a long space part E2 in the depth direction that allows further insertion of the sealed bag 2 with a zip.

[0031] In this way, the round cutter 10 has a rectangular shape when viewed from the front in the unopened state in which the contents are stored, and is formed as a sealed part 2A in which at least one side is joined and sealed between the front and back bag materials, and a zip part 2B spanning the entire length is provided inside the sealed part 2A. For the sealed bag 2 with a zip, it has an insertion part E1 into which one side is inserted and a space part E2 that allows further insertion of the sealed bag 2 with a zip. In the insertion part E1, a regulating part 32 is provided to regulate the zip part 2B from entering the space part E2. In the space part E2, it is possible to approach and separate from one side surface of the sealed bag 2 with a zip. When approaching, it is bent so as to form a round cut (2D) that extends from the immediate vicinity of the zip part 2B toward the edge side of one side and closes the edge side. It includes a round blade part 36 and a support base part 22 located on the other side surface of the sealed bag with a zip to support the pressure when the round blade part 36 approaches.

[0032] In such a configuration, specifically, as shown in Fig. 5(A), in the unopened state in which the contents (not shown) are stored, it has a rectangular shape when viewed from the front, and is formed as a sealed part 2A in which at least one side is joined and sealed between the front and back bag materials, and a zip part 2B spanning the entire length is provided inside the sealed part 2A. For the sealed bag 2 with a zip, one side is inserted from the insertion part E1.

[0033] From this state, as shown in FIG. 5(B), when further insertion of the zip-sealed bag 2 is allowed and one side faces the space portion E2, the user gently operates the cover portion 40 downward and visually restricts the zip portion 2B from entering the space portion E2 more than the regulating piece portion 32b.

[0034] Then, as shown in FIG. 5(C), by further operating the cover portion 40 downward, a substantially U-shaped cut (2D) can be formed in the zip-sealed bag 2 with the round blade portion 36 on the back side of the regulating piece portion 32b and in the immediate vicinity of the zip portion 2B.

[0035] As a result, as shown in FIG. 6(A), even when the zip-sealed bag 2 with a long sealing portion 2A due to the formation of the hanging hole 2C is targeted, as shown in FIG. 6(B), a U-shaped cut 2D can be formed in the vicinity thereof without the round blade portion 36 catching the zip portion 2B. Therefore, if one side including the sealing portion 2A is cut along the zip portion 2B, as shown in FIG. 6(C), a tongue piece portion 2E protruding from the edge after cleavage can be formed (remain) so as to serve as a grip when the user opens the zip portion 2B after cleaving the space between the zip portion 2B and the sealing portion 2A of the zip-sealed bag 2.

[0036] Note that, as shown in FIG. 6(D), by pressing the vicinity of the zip portion 2B with the regulating piece portion 32b, the tongue piece portion 2E can be given a set and it can be made easier to separate the front and back of the bag material.

[0037] Incidentally, in the present embodiment, although a stapler-shaped round cutter 10 that is easy for the user to operate (the operating feeling is familiar) is disclosed, it is not particularly limited to such a configuration.

[0038] (Guillotine method) FIG. 7 shows a guillotine-type round cutter 50 that employs a simpler configuration and has easy operability.

[0039] The round cutter 50 shown in Fig. 7 has a housing shape divided into upper and lower parts, and a support base 52 is provided in the lower box 51 thereof.

[0040] Also, in the upper box 53, a push button 54 protruding from the upper surface 53a is provided so as to be able to move up and down, and is constantly biased upward by a coil spring 55 arranged so as to surround the shaft portion 54a.

[0041] Furthermore, a holder portion 54b bent forward is integrally provided at the lower end of the shaft portion 54a, and a round blade portion 56 is provided on the bottom surface side thereof.

[0042] On the other hand, the lower box 51 and the upper box 53 are provided with an upper edge portion 51a and a lower edge portion 53b that constitute a slit-shaped insertion port 57 in front of the round blade portion 56. The height of this insertion port 57 is made lower than the thickness of the zip portion 2B, and the upper edge portion 51a and the lower edge portion 53b constitute a regulating portion.

[0043] In this way, by configuring the regulating portion with the lower box 51 and the upper box 53 having a housing shape, the height of the insertion port 57 can be directly utilized. At this time, a regulating piece portion 58 may be provided on the holder portion 54b and used as a dedicated piece for shaping the tongue piece portion 2E shown in Fig. 6(D).

[0044] (Plier method) Fig. 8 shows a round cutter 60 of the plier method. Here, the plier method means that when the user holds and operates a pair of handle portions so as to approach each other, the opening of each grip surface of the clamp portion can be changed between a closed state and a separated state by eccentrically rotating the rotating shaft, and the slip joint plier method is utilized.

[0045] As shown in Fig. 8, the round cutter 60 includes a pair of steels 62, 63 rotatably connected via a rotating shaft 61.

[0046] Each of the steel members 62 and 63 is connected in a crosswise manner with the rotation axis 61 as a fulcrum. One end side thereof forms handle portions 62a and 63a that are grasped by the user, and the other end side forms clamp portions 62b and 63b that sandwich the object.

[0047] Here, when the user performs a grasping operation such that the pair of handle portions 62a and 63a approach each other, the clamp portions 62b and 63b are set so that the opening of each grip surface 62c and 63c of the clamp portions 62b and 63b becomes a separated state by eccentrically displacing the connection state between one of the steel members 63 and the rotation axis 61.

[0048] On the other hand, a support portion 65 corresponding to the support portion 22 is provided on the grip surface 62c via an extension table 64.

[0049] On the other grip surface 63c, a restricting portion 67 corresponding to the restricting portion 32, a holder 68 corresponding to the holder 35, and a round blade portion 69 corresponding to the round blade portion 36 are provided via an extension table 66.

[0050] And even in such a configuration, the same effects as those of the above-described Embodiment 1 can be achieved.

[0051] As described above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, it goes without saying that the scope of the technical idea of the present invention is not limited to the embodiments described here. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can conceive of various changes, modifications, combinations, etc. within the scope of the technical idea of the present invention described in the claims. Therefore, the technologies after these changes, modifications, combinations, etc. also naturally belong to the scope of the technical idea of the present invention.

[0052] Specifically, as shown in FIGS. 9(A) and (B), the example shows the shape of the 2D cut when the round blade portion 36 is U-shaped. In contrast, the examples shown in FIGS. 9(C) and (D) have the round blade portion 76 shaped like a substantially Ω. As a result, in the vicinity of the zip portion 2B of the zip-sealed bag 2, a horizontal cut 2F along the zip portion 2B can be formed. This cut 2F can be utilized when tearing one side from the zip portion 2B.

[0053] Also, as having the same effect by forming such a cut 2F, it can be arbitrary in terms of its shape etc., such as a round blade portion 86 shaped like a V as shown in FIGS. 9(E) and (F), or a round blade portion 96 shaped like a cross-sectional pot lid as shown in FIGS. 9(G) and (H).

[0054] Although not exemplified one by one, the present invention is implemented with various modifications within the scope not departing from its gist.

Explanation of Signs

[0055] 2 Zip-sealed bag 2A Sealing portion 2B Zip portion 2C Lower hole 2D Cut 2E Tongue piece portion 2F Cut 10 Round cutter 20 Base portion 20a Upper surface 21 Support shaft 22 Support base portion 23 Support leg portion 24 Leaf spring 24a Rear end portion 24b Free end portion 30 Blade fixing portion 31 Pedestal portion 32 Regulation portion 32a Plate-like portion 32b Regulation plate portion 33 Cutter portion 34 Bottom wall portion 34a Bottom surface 34b Upper surface 34c Slit 35 Holder 35a Outer holder 35b Inner holder 36 Round blade part 40 Cover part 50 Round cutter 51 Lower box 51a Upper edge part 52 Support base part 53 Upper box 53a Upper surface 53b Lower edge part 54 Push button 54a Shaft part 54b Holder part 55 Coil spring 56 Round blade part 57 Insertion port 58 Regulation plate part 60 Round cutter 61 Rotation shaft 62 Steel 62a Handle part 62b Clamp part 62c Grip surface 63 Steel 63a Handle part 63b Clamp part 63c Grip surface 64 Extension table 65 Support base part 66 Extension table 67 Regulation part 68 Holder 69 Round blade part 76 Round blade part 86 Round blade part 96 Round blade part E1 Insertion part E2 Space part

Claims

1. For a zippered sealed bag that presents a rectangular front view in an unopened state with the contents stored, and has a sealed portion where at least one side is joined and sealed by bag materials on the front and back, and a zipper portion that spans the entire length inside the sealed portion, it is provided with an insertion portion into which the one side is inserted and a space portion that allows further insertion of the zippered sealed bag, and in the insertion portion, a restricting portion is provided to restrict the zipper portion from entering the space portion, and in the space portion, a round blade portion that can approach and separate from one side of the zippered sealed bag, and when approaching, is bent to form a round cut extending from the immediate vicinity of the zipper portion toward the edge side of the one side and closing the edge side, and a support base portion that is located on the other side of the zippered sealed bag and supports the pressure when the round blade portion approaches, are provided, and a tongue piece portion that protrudes from the edge after the cleavage is formed so as to serve as a grip when the user opens the zipper portion after cleaving between the zipper portion and the sealed portion of the zippered sealed bag. A round cutter characterized by the above.

2. In the round cutter according to Claim 1, the round blade portion is provided with a wing-shaped blade portion that forms a cleavage cut along the one side along the zipper portion. A round cutter characterized by the above.

3. In the round cutter according to Claim 1 or Claim 2, the restricting portion is located on the insertion port side relative to the open end portion of the round blade portion, and protrudes more than the round blade portion so as to be in contact with the zippered sealed bag prior to the round blade portion while being interlocked with the approach and separation of the round blade portion. A round cutter characterized by the above.

Images