Tape cutter and guard portion of tape cutter

Abstract

To provide a tape cutter and a guard part of the tape cutter capable of being easily used by preventing winding of a tape end and adhesion to a peripheral object.SOLUTION: A tape cutter to which a tape roll is attached to feed an adhesive tape forward and cut the adhesive tape, the tape cutter comprising: an attachment part to which the tape roll is attached; a blade part configured to cut the adhesive tape; a support part configured to support the blade part; and a guard part disposed below the blade part, wherein the guard part has an intermediate part to which a tape end of the adhesive tape adheres and a pair of protective parts configured to guard both sides of the tape end, and has a finger insertion space formed by the intermediate part and the protective parts.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a tape cutter and a guard portion of the tape cutter. [Background technology]

[0002] Tools for cutting adhesive tape include adhesive tape cutters and adhesive tape dispensers (hereinafter collectively referred to as "tape cutters").

[0003] Conventionally, tape cutters that are used by mounting adhesive tape wound around a core in a roll (hereinafter also referred to as a "tape roll") include, for example, a tape cutter that "is composed of a side plate portion D1 including a front triangular portion and a rear annular portion, a roll shaft portion D2 extending to the right so as to be cantilevered from the rear annular portion of the side plate portion D1, a cutter blade support portion D3 extending to the right so as to be cantilevered from the front triangular portion of the side plate portion D1, a cutter blade D4 with a sawtooth tip fixed to the tip edge of the cutter blade support portion D3, and temporary fastening arms D5 extending inward so as to be bent opposite each other from the left and right lower ends of the cutter blade support portion D3" (see paragraph 0037 and Figure 3(b) of Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3161903 Summary of the Invention [Problem to be solved by the invention]

[0005] With the conventional tape cutters described above, after cutting, the leading edge of the adhesive tape (hereinafter also referred to as the "tape end") may adhere to the temporary fastening arm, but it is also common for the tape end to be rewound by the tape roll's reverse rotation and re-adhere to the tape roll, or to separate from the temporary fastening arm and become floating. If the tape end re-adheres to the tape roll (hereinafter also referred to as "wrapping"), it becomes difficult to see where the tape was cut, and it takes time to find the tape end the next time it is used. If the tape end is floating, it may adhere to surrounding objects, causing foreign matter to adhere to the tape end, or it may damage surrounding objects if it is forcibly pulled away.

[0006] In the above-mentioned conventional tape cutter, even if the end of the tape adheres to the temporary fastening arm, the floating portion of the tape end that is forward of the front end of the temporary fastening arm is long and is not guarded (see Figure 4(b) of Patent Document 1), so there is a risk that the tape will stick to surrounding objects.

[0007] Incidentally, Patent Document 1 above proposes an auxiliary tool that is fixed to a cutter blade support part as a means for solving the problem of winding. In Patent Document 1 above, the leading end of the adhesive tape is cut by moving the leading end of the adhesive tape across the surface of the auxiliary tool and pressing the adhesive surface of the adhesive tape against the cutter blade, so that the unused part of the leading end of the adhesive tape is temporarily adhered to the surface of the auxiliary tool, reducing the risk of the adhesive tape roll rotating in reverse and reducing the risk that the leading end of the adhesive tape will re-adhere to the adhesive tape roll, making it difficult to see the cut end (see paragraphs 0043 to 0045 and Figure 4(a) of Patent Document 1).

[0008] However, in the tape cutter of Patent Document 1, an auxiliary tool is fixed to the cutter blade support part to which the cutter blade is fixed, and the end of the tape adheres to this auxiliary tool. Therefore, when the tape cutter is used next time, there is a risk that the finger may come into contact with the cutter blade underneath when peeling the end of the tape from the auxiliary tool with the finger, and the tape cutter cannot be used with ease.

[0009] The present invention is intended to solve at least one of the above problems, and aims to provide a tape cutter and a guard part for the tape cutter that are easy to use and prevent the tape ends from wrapping around and sticking to surrounding objects. [Means for solving the problem]

[0010] One aspect of the present invention for solving the above problems is a tape cutter for attaching a tape roll and unwinding and cutting adhesive tape forward, comprising an attachment section for attaching the tape roll, a blade section for cutting the adhesive tape, a support section for supporting the blade section, and a guard section arranged below the blade section, wherein the guard section has an intermediate section to which the tape end of the adhesive tape adheres and a pair of protective sections that guard both sides of the tape end, and has a finger insertion space formed by the intermediate section and the protective sections.

[0011] The blade portion may be accommodated in the support portion so as to be able to advance and retreat.

[0012] The blade portion may have a cutting blade and a holding portion that holds the cutting blade, and may have a pressing portion on the underside of the holding portion that presses the adhesive tape against the middle portion of the guard portion when the blade portion advances.

[0013] The attachment portion may have a finger rest portion for resting a finger on an inner periphery of the main body that is annular in side view.

[0014] Another aspect of the present invention for solving the above problem is a guard part for a tape cutter that is attached to a tape roll and that unwinds and cuts adhesive tape forward, the guard part being positioned below the blade part for cutting the adhesive tape and having an intermediate part to which the tape end of the adhesive tape adheres, and a pair of protective parts that guard both sides of the tape end, and having a finger insertion space formed by the intermediate part and the protective parts. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a tape cutter and a guard portion for the tape cutter that can be used easily and that prevent the tape end from wrapping around and sticking to surrounding objects.

[0016] Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0017] [Figure 1] 1A and 1B are diagrams illustrating an example of the appearance of a tape cutter according to an embodiment. [Figure 2] 1A and 1B are diagrams illustrating an example of the appearance of a tape cutter according to an embodiment. [Figure 3] 1A and 1B are diagrams illustrating an example of the appearance of a tape cutter according to an embodiment. [Figure 4] 1A and 1B are diagrams illustrating an example of the appearance of a tape cutter according to an embodiment. [Figure 5] 10A and 10B are diagrams illustrating an example of a guard portion of a tape cutter according to an embodiment. [Figure 6] 1 is a diagram illustrating an example of a blade portion and a handle portion of a tape cutter according to an embodiment; [Figure 7] 10A to 10C are diagrams illustrating the operation of a blade portion and a handle portion of a tape cutter according to an embodiment. [Figure 8] 10A to 10C are diagrams illustrating a procedure for using a tape cutter according to an embodiment. [Figure 9] 10A to 10C are diagrams illustrating a procedure for using a tape cutter according to an embodiment. [Figure 10] 10A to 10C are diagrams illustrating a procedure for using a tape cutter according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. Note that components common to the following embodiments will be assigned the same reference numerals as those previously mentioned, and their description may be omitted. Furthermore, when referring to the shape, positional relationship, etc. of components, etc., it is understood that the reference numerals include those that are substantially similar or similar to the shape, etc., unless otherwise specified or when it is clearly considered otherwise in principle.

[0019] Figures 1 to 4 are diagrams showing an example of the appearance of a tape cutter according to one embodiment, where Figure 1(a) is a top view, Figure 1(b) is a left side view, Figure 2(a) is a front view, Figure 2(b) is a rear view, Figure 3(a) is a bottom view, Figure 3(b) is a right side view, Figure 4(a) is an oblique view observed from the front left, and Figure 4(b) is an oblique view observed from the rear right.

[0020] In this application, the direction in which the adhesive tape is unwound is defined as the forward direction. In each drawing, X indicates the front-to-rear direction (+X is the forward direction), Y indicates the up-down direction (vertical direction), and Z indicates the left-to-right direction (horizontal direction). In this application, the XZ plane (the plane along the XZ plane) is referred to as the horizontal plane, and the YZ plane (the plane along the YZ plane) is referred to as the vertical plane.

[0021] The tape cutter 1 of this embodiment is a tool for cutting thin sheet-like (film-like) adhesive tape. The tape cutter 1 is particularly suitable for loading a tape roll and unwinding the adhesive tape forward to cut it. Note that the following description will be given based on an illustrated example, but the tape cutter 1 is not limited to this and may be configured symmetrically to the illustrated example.

[0022] As shown in the figure, the tape cutter 1 comprises an attachment section 2 for attaching a tape roll, a blade section 3 for cutting adhesive tape, a support section for supporting the blade section 3, and a guard section 6 arranged below the blade section 3 and to which the end of the tape adheres.

[0023] The tape cutter 1 may be configured to be fixed so that the blade portion 3 does not move relative to the support portion, but preferably, the blade portion 3 is configured to be movable forward and backward relative to the support portion, more specifically, the front end of the support portion, and the blade portion 3 can be moved forward and backward by operating the handle portion 7.

[0024] First, the mounting portion 2, the support portion, and the guard portion 6 will be described with reference to FIGS. 1 to 4, and the blade portion 3 and the handle portion 7 will be described later.

[0025] The mounting section 2 is the rearmost section of the tape cutter 1 and includes a main body 20 that is annular in side view. The tape roll is mounted by fitting the core onto the outer periphery of the main body 20. The outer periphery of the main body 20 is smaller than the inner periphery of the core of the tape roll, and supports the mounted tape roll so that it can rotate. The main body 20 is connected to the support section at a portion near the front end.

[0026] The mounting portion 2 is not particularly limited, but preferably has a stopper portion 21 formed integrally with the main body 20. The stopper portion 21 is a portion that prevents the tape roll mounted on the main body 20 from falling off. One stopper portion 21 may be provided, but preferably a pair of stopper portions 21 are provided point-symmetrically with respect to the center of the main body 20. Three or more stopper portions 21 may be provided. The stopper portion 21 has a base portion 211 that is continuous with the main body 20 and a tip portion 212 that is provided at the free end of the base portion 211.

[0027] The base portion 211 is tongue-shaped with a gap between it and the main body 20, and the position of its free end is approximately coincident with the left end face of the main body 20. The base portion 211 has approximately the same thickness as the main body 20, and in its initial state, its arc-shaped upper and lower surfaces are respectively on the same circle as the outer and inner peripheral surfaces of the main body 20, as if it were part of the main body 20. The base portion 211 has elasticity such that it bends inward when pressed radially inward from the main body 20 at its free end, and returns to its initial state when the external force is removed. The tip portion 212 is provided perpendicular to the free end of the base portion 211, and has a portion that protrudes in an arc-like shape radially outward from the outer periphery of the main body 20.

[0028] The mounting unit 2 is not particularly limited, but preferably has a finger rest 22 provided within the inner periphery of the main body 20. The finger rest 22 is, for example, thin-plate-shaped, with both ends connected to two locations on the inner periphery of the main body 20 in a side view, dividing the main body 20 into two arc-shaped sections. The finger rest 22 rests on the underside of the finger rest, is preferably provided near the upper end of the main body 20, and the length between both ends is equal to or greater than the inner periphery radius of the main body 20 but is smaller than the inner periphery diameter. For example, the finger rest 22 is provided linearly in a side view. For example, the finger rest 22 may have one or more upwardly recessed portions in the portion where the finger rests. The finger rest 22 may be formed separately from the main body 20 and fixed thereto, but is preferably formed integrally with the main body 20.

[0029] When using the tape cutter 1, first, the tip 212 of the stopper 21 is pushed inward of the main body 20 to bend the base 211, and the core of the tape roll is fitted onto the outer periphery of the main body 20 to mount it. After the tape roll is mounted, the external force is removed and the base 211 returns to its initial state, so that the tip 212 returns to its initial state in which it protrudes outward from the outer periphery of the main body 20. The mounted tape roll is prevented from falling off on the right side by hitting a support part connected to the main body 20, and on the left side by hitting the tip 212.

[0030] The tape cutter 1 can be held by hand. The tape cutter 1 includes a finger rest 22 that can be gripped with four fingers, improving grip comfort and workability during use.

[0031] The support parts are not particularly limited, but as an example, as shown in the figure, include two support parts: a right support part 4 and a left support part 5. The tape cutter 1 has a storage space formed by both support parts, and a blade part 3 (described later) is stored in the storage space so that it can move forward and backward and appear and disappear.

[0032] The right support part 4 has, for example, a right wall part 41, a front wall part 42, and a rear wall part 43. The right wall part 41 is a part that extends along the XY plane and has a generally uniform thickness. The rear end of the right wall part 41 is concave in an arc shape toward the front, and the rear end is continuous with a part of the main body 20 of the mounting part 2 near the front end. A part of the right wall part 41 near the upper front end covers the right side of the storage space. The right wall part 41 may be formed separately from the mounting part 2 and fixed thereto, but is preferably formed integrally with the mounting part 2.

[0033] The front wall 42 is generally V-shaped in a side view and covers a portion of the front right side and upper right side of the storage space. The front wall 42 is fixed at its right end to the right wall 41 using a fastening member such as a screw. The front wall 42 may be formed integrally with the right wall 41.

[0034] The rear wall 43 covers the rear right side of the storage space. The right end of the rear wall 43 is fixed to the right wall 41 using a fastening member such as a screw. The rear wall 43 may be formed integrally with the right wall 41.

[0035] The left support part 5 has, for example, a left wall part 51, a front wall part 52, and a rear wall part 53. The left wall part 51 is a part that extends along the XY plane and has a substantially uniform thickness. The left wall part 51 covers the left side of the storage space.

[0036] The front wall portion 52 is generally V-shaped in a side view and covers a portion of the front left side and upper left side of the storage space. The left end of the front wall portion 52 is fixed to the left wall portion 51 using a fastening member such as a screw. The front wall portion 52 may be formed integrally with the left wall portion 51. The front wall portion 52 may be formed integrally with the front wall portion 42.

[0037] The rear wall 53 covers the rear left side of the storage space. The left end of the rear wall 53 is fixed to the left wall 51 using a fastening member such as a screw. The rear wall 53 may be formed integrally with the left wall 51. The rear wall 53 may be formed integrally with the rear wall 43.

[0038] In this way, the storage space for storing the blade portion 3 of the tape cutter 1 is surrounded by the right wall portion 41, the left wall portion 51, the front wall portions 42, 52, and the rear wall portions 43, 53 of the support portion. As will be described later, the left and right walls are provided with second guide portions for guiding the advance and retreat of the blade portion 3.

[0039] The tape cutter 1 has a storage space in which the blade portion 3 can be stored so as to be retractable, thereby reducing contact between the blade portion 3 and people or objects, and allowing for easier use.

[0040] 5A and 5B are diagrams for explaining an example of a guard portion of a tape cutter according to one embodiment, where (a) is a partially enlarged view of FIG. 1A, and (b) is a partially enlarged view of FIG. 4A.

[0041] As shown in the figure, the guard portion 6 is formed in a jaw shape, for example, and receives the tape end T1 (shown by the dashed line) and prevents it from wrapping around. The guard portion 6 has a protective wall 61, and the tape end T1 adheres to the upper end surface of the protective wall 61. The protective wall 61 is disposed below the blade portion 3 and is supported by a support wall 62.

[0042] As an example, the protective wall 61 has an upper end surface that is arc-shaped when viewed from above and has a certain width in the front and rear. The protective wall 61 preferably has a tapered vertical cross section, with the wall thickness (wall thickness) increasing toward the upper end. By configuring the protective wall 61 in this way, the protective wall 61 is compact yet has a wide upper end surface, making the adhesiveness of the tape end T1 stronger. The material of the protective wall 61 is not particularly limited, and it may be any material that allows the adhesive tape to easily adhere to it, but also allows the adhesive tape to be easily peeled off by lifting it with a finger or the like. The protective wall 61 is formed, for example, from a resin material.

[0043] The protective wall 61 has a width A wider than the width of the adhesive tape, and includes a middle portion 611 to which the tape end T1 adheres, and left and right protective portions 612 on either side of the middle portion 611 that guard both sides of the tape end T1. By providing the protective wall 61 with this pair of protective portions 612, it is possible to prevent the tape end T1 from adhering to surrounding objects. As shown in FIG. 5(a), the pair of protective portions 612 that protrude forward from both support portions are formed symmetrically with respect to the center line C and have a front-to-rear width B. The front-to-rear width B is not particularly limited, but is preferably 10 mm or greater.

[0044] The protective wall 61 prevents the tape end T1 from adhering to the upper end surface and remaining in place until the next use. The protective wall 61 has an arc-shaped middle section, so the adhesive surface that adheres to the upper end surface has a relatively wide front-to-back width, more effectively preventing winding and adhesion to surrounding objects. The protective wall 61 is positioned below the blade portion 3 and is equipped with left and right protective sections 612 in addition to the middle section 611, so it can guard the left, right, and bottom of the tape end T1 and prevent the tape end T1 from sticking to surrounding objects.

[0045] The protective wall 61 is positioned below the blade portion 3 and is provided with left and right protective portions 612 in addition to the middle portion 611, so that a finger insertion space is formed below the tape end T1 into which fingers can be inserted from the front. The next time it is used, the index finger and middle finger are inserted into the finger insertion space and placed on the adhesive surface of the tape end T1, and the thumb is placed on the non-adhesive surface of the tape end T1, so that the tape end T1 can be sandwiched between the top and bottom, improving the operability of tasks such as peeling the tape end T1 from the upper end surface of the protective wall 61 and unwinding it forward.

[0046] The protective wall 61 is arranged so that the front end of the protective portion 612 is the most forward on the tape cutter 1. This configuration prevents the tape end T1 from sticking to the installation surface even when the tape cutter 1 is placed upright. Even when the blade portion 3 is fixed, the protective wall 61 is arranged so that the front end of the protective portion 612 is further forward than the blade portion 3. This configuration of the protective wall 61 reduces contact with the blade portion 3 when pulling out the tape end T1, making it easier to use.

[0047] The protective wall 61 may have a U-shaped upper end surface with a certain width from front to back when viewed from above. In this case, the portion extending laterally at the rear of the U-shape is the middle portion 611, and the portions extending forward and backward on both sides are the left and right protective portions 612. Even when configured in this way, the protective wall 61 preferably has a tapered cross section and is configured so that the wall thickness increases toward the upper end.

[0048] The configuration of the support wall 62 is not particularly limited as long as it is capable of supporting the protective wall 61. Preferably, as shown in the figure, the support wall 62 is configured to be connected to the lower end of the protective wall 61 and extend downward, with the lower end contacting the ground. As an example, the support wall 62 is connected to the right wall portion 41 at its right end. By configuring the support wall 62 in this manner, it is possible not only to support the protective wall 61, but also to support the entire tape cutter 1 so that it can stand on its own on the installation surface. Note that the protective wall 61 may also be connected to the right wall portion 41 at its right end, similar to the support wall 62.

[0049] The support wall 62 preferably has the same cross section as the lower end of the protective wall 61 and is formed integrally with the protective wall 61. By configuring the guard part 6 in this way, the support wall 62 also contains space, and the finger insertion space expands to the installation surface, further improving workability.

[0050] The guard portion 6 preferably further includes a bottom wall 63 that is continuous with the lower end of the support wall 62. The bottom wall 63 is, for example, formed in the shape of a plate with a generally uniform thickness, has a width that is approximately the same as that of the support wall 62, and extends along a horizontal plane. The right end of the bottom wall 63 is continuous with the right wall portion 41 of the right support portion 4. The bottom wall 63 supports the support wall 62, and reinforces and supports the tape cutter 1 as a whole.

[0051] The guard portion 6 preferably further includes a reinforcing wall 64 erected on the upper surface of the bottom wall 63. As an example, the reinforcing wall 64 is formed in the shape of a plate having a generally uniform thickness, with a width substantially equal to that of the support wall 62 and an upper end that is slightly inclined forward. The reinforcing wall 64 reinforces the bottom wall 63 and reinforces the entire tape cutter 1. Note that, like the bottom wall 63, the reinforcing wall 64 may be connected to the right wall portion 41 at its right end.

[0052] The guard portion 6 is preferably formed integrally with the right wall portion 41. The guard portion 6 may be formed separately from the right wall portion 41 and fixed to the right wall portion 41 at its right end. The support wall 62 may be unconnected to the right wall portion 41 at its right end, with a gap provided between the support wall 62 and the right wall portion 41. In this case, the support wall 62 is supported by the right wall portion 41 via the bottom wall 63.

[0053] When the tape cutter 1 has a fixed blade section 3, after cutting, the user presses the tape end T1 against the upper end surface of the guard section 6 to secure it. When the tape cutter 1 has a movable blade section 3, as the blade section 3 moves forward, the tape end T1 is automatically pressed against the upper end surface of the guard section 6 and secured therein. An example of a configuration in which the blade section 3 is movable forward and backward will be described in detail below.

[0054] FIG. 6 is a diagram showing an example of the blade and handle of a tape cutter according to one embodiment, and shows the internal configuration with the mounting portion 2, part of the right support portion 4, and the left support portion 5 omitted.

[0055] The blade portion 3 includes, for example, a cutting blade 31 and a holding portion 32 that holds the cutting blade 31. The blade portion 3 preferably further includes a pressing portion 33 on the lower surface of the holding portion 32.

[0056] The cutting blade 31 is provided (e.g., fixed) laterally to the upper surface of the front end of the holding part 32, and preferably has its tip positioned forward of the front end of the holding part 32. As an example, the cutting blade 31 is made of metal, and has a saw-like tip with multiple triangular teeth. Note that the cutting blade 31 may be made of a material other than metal.

[0057] The holding portion 32 has a horizontal portion 321 on the front end of which the cutting blade 31 is provided, and an upright portion 322 that is movably connected to the handle portion 7 .

[0058] As an example, the horizontal portion 321 has a horizontal plate portion 3211 whose thickness gradually decreases toward the front, and a raised portion 3212 that rises upward from the rear end of the horizontal plate portion 3211. The raised portion 3212 is the portion above the imaginary line (broken line) in the figure. The horizontal plate portion 3211 and the raised portion 3212 are preferably formed integrally and have the same width.

[0059] An oval second sliding portion 34 is provided to protrude from each of the left and right end faces of the horizontal portion 321. The pair of second sliding portions 34 are configured to be symmetrical with respect to the center line C (see FIG. 5(a)). For example, the left second sliding portion 34 is provided near the rear end of the horizontal plate portion 3211 so as to protrude leftward from the left end face.

[0060] The pair of second sliding portions 34 can slide along the pair of second guide portions provided on the left and right support portions. The pair of second guide portions are configured symmetrically with respect to the center line C. For example, the right second guide portion 44 is an oval groove with a bottom that recesses in the thickness direction and is provided near the front end of the right wall portion 41. The pair of second guide portions is longer than the pair of second sliding portions 34 and has a slightly downward sloping front end. The pair of second guide portions is located above the guard portion 6.

[0061] The standing portion 322 has a lower end connected to the upper end of the plateau portion 3212 and extends upward from the plateau portion 3212. The standing portion 322 has a width narrower than the horizontal portion 321, for example, within a range of 1 / 5 to 4 / 5 of the width of the horizontal portion 321, and preferably within a range of 1 / 3 to 2 / 3 of the width of the horizontal portion 321. The standing portion 322 is provided on the right side, and for example, the right end surface is on the same plane as the right end surface of the horizontal portion 321. As will be described later, the standing portion 322 is provided with a first guide portion 35 (see FIG. 7 described later) on its left end surface, which engages with the handle portion 7.

[0062] The handle portion 7 is rotatably supported on the support portion. The handle portion 7 is accommodated in the accommodation space except for a portion near the upper end. The handle portion 7 may be formed in a straight line when viewed from the side, but preferably, as shown in the figure, the upper portion 71 is inclined slightly rearward relative to the lower portion 72, forming a large obtuse angle between the upper portion 71 and the lower portion 72. The handle portion 7 may have a uniform thickness, but preferably, the thickness of the upper portion 71 decreases as it approaches the upper end, and the thickness of the lower portion 72 decreases as it approaches the lower end. The overall width of the handle portion 7 is approximately the same as the width of the blade portion 3.

[0063] The handle 7 has a clearance portion at its lower part 72 to avoid the erected part 322 of the blade part 3. More specifically, the lower part 72 has a wide part 721 that is continuous with the upper part 71, and a narrow part 722 that is narrower in width than the wide part 721 and is located on the left side. A cutout portion below the wide part 721 and to the right of the narrow part 722 constitutes the clearance portion. The handle 7 has a first sliding part 75 (see Figure 7 described below) on the right end surface of the narrow part 722 that corresponds to the first guide part 35 of the erected part 322.

[0064] The handle portion 7 has a lower end surface of the narrow portion 722 formed in an arc shape in a side view so as not to come into contact with the elevated portion 3212 when rotated.

[0065] The handle portion 7 has a pair of cylindrical shafts 73 on the left and right end faces near the corner where the upper portion 71 and lower portion 72 are connected, and is supported by a support portion so that the pair of shafts 73 can swing about a rotation axis. The handle portion 7 has no step near the corner of the right end face, and the right shaft 73 is provided to protrude to the right from the right end face. The handle portion 7 has a notch near the corner of the left end face, which forms a step on the left end face, forming an arrangement surface. The left shaft 73 is provided to protrude to the left from this arrangement surface. Although not shown, receiving holes are provided in the left and right wall portions of the support portion to receive and support the left and right shafts 73.

[0066] A torsion spring 74 is provided on the mounting surface of the handle 7. The torsion spring 74 has a coil portion fitted onto the shaft 73, an end 741 of one arm inserted into a hole in the mounting surface, and an end 742 of the other arm abutting against the inner wall surface of the front wall 52.

[0067] 7A and 7B are diagrams showing the operation of the blade and handle of a tape cutter according to one embodiment, with (a) showing the initial state and (b) showing the blade advanced state, and showing the internal configuration with part of the right support part 4 and the left support part 5 omitted. Note that in the illustration, part of the configuration is shown in perspective.

[0068] As shown in Figure 7(a), in the initial state, the handle 7 and blade 3 are located toward the rear of the storage space. For example, in the handle 7, the end 742 of the torsion spring 74 abuts against the inner wall surface of the front wall 52, and the lower portion 72 abuts against the inner wall surface of the rear wall. The first sliding portion 75 engages with the first guide portion 35 of the blade 3 and is located on the lower end side of the first guide portion 35. The second sliding portion 34 engages with the second guide portion 44 of the support portion and is located on the rear end side of the second guide portion 44.

[0069] 7(b), when the upper portion 71 of the handle portion 7 is pressed downward, the handle portion 7 rotates clockwise around the shaft portion 73 against the elastic force of the torsion spring 74. As a result, the first sliding portion 75 slides upward along the first guide portion 35 and moves toward the front of the storage space, and the pair of second sliding portions 34 slide forward along the pair of second guide portions of the support portion.

[0070] As shown in the figure, the second guide portion of the support portion is inclined slightly downward toward the front, with its front end slightly lower than its rear end. Correspondingly, the second sliding portion 34 of the blade portion 3 is also inclined slightly downward toward the front, with its front end slightly lower than its rear end. As a result, the holding portion 32 moves forward while lowering slightly downward, pressing the adhesive tape against the upper end surface of the guard portion 6.

[0071] The blade portion 3 has a holding portion 32 that is L-shaped in a side view, with the lower surface of the horizontal portion 321 being a roughly horizontal plane and the rear surface of the upright portion 322 being a roughly vertical plane. When the blade portion 3 does not have the pressing portion 33, the lower surface of the horizontal portion 321 presses the adhesive tape against the upper end surface of the guard portion 6. When the blade portion 3 has the pressing portion 33, as shown in the example in the figure, when the holding portion 32 advances, the pressing portion 33 also advances so as to move slightly downward, and presses the adhesive tape against the upper end surface of the intermediate portion 611 of the guard portion 6.

[0072] The pressing portion 33 is in the shape of a horizontally long plate, and is provided so as to protrude downward from the underside of the horizontal portion 321. For example, sponge, felt, or the like is used for the pressing portion 33. As shown in the figure, the pressing portion 33 is disposed at a position where it presses the upper end surface of the intermediate portion 611 when the first sliding portion 75 reaches the upper end of the first guide portion 35 and the second sliding portion 34 reaches the front end of the second guide portion 44, etc., and has a front-to-rear width corresponding to the front-to-rear width of the upper end surface of the intermediate portion 611.

[0073] 8 to 10 are diagrams illustrating the procedure for using the tape cutter according to one embodiment, in which a part of the right support part 4 and the left support part 5 are omitted.

[0074] When using the tape cutter 1, the adhesive tape T in the form of a tape roll is first loaded into the loading section 2. As shown in the figure, the adhesive tape T is passed under the rear wall of the support section, and then passed under the pressing section 33 of the blade section 3 and above the reinforcing wall 64, and is then drawn (unwound) above the guard section 6. In this loaded state, the adhesive tape T has an adhesive bottom surface and a non-adhesive top surface.

[0075] As shown in Figure 9, when using the tape, the tape end T1 is pinched and an appropriate amount of adhesive tape T is pulled forward. After pulling, when cutting, the handle portion 7 is pressed down to move the holding portion 32 forward so that the cutting blade 31 extends from the support portion. As the holding portion 32 moves forward, the pressing portion 33 also moves forward.

[0076] 10, when the holding portion 32 advances and the cutting blade 31 reaches the cutting position, the pressing portion 33 reaches above the intermediate portion 611 of the guard portion 6 and presses the adhesive tape T against the upper end surface of the intermediate portion 611. Then, due to its adhesive force, the adhesive tape T adheres and is fixed to the upper end surface of the guard portion 6. The adhesive tape can be pressed against the cutting blade 31 and cut as shown.

[0077] As shown in Figure 8, when the handle 7 is released after cutting, the resilience of the torsion spring 74 causes the handle 7 to rotate counterclockwise, causing the holding part 32 to move slightly upward and then backward, and the cutting blade 31 to retract into the support part, returning to its initial state. The tape end T1 adheres to the upper end surface of the guard part 6 and is fixed there, so it does not wrap around the tape roll. Furthermore, the left, right, and bottom sides of the tape end T1 are guarded by the guard part 6, so it will not stick to surrounding objects.

[0078] When using it next time, the tape end T1 can be lifted and pulled away from the upper end surface of the guard portion 6, and then pulled out forward again for use, as shown in FIG.

[0079] In this way, the tape cutter 1 has no restrictions when pulling out the adhesive tape T, and after pulling it out, just before cutting, the part that will become the tape end T1 is automatically pressed and fixed, making it easy to use and highly functional.

[0080] 8, the tape cutter 1 is configured so that the front end of the tape end T1 is located behind the front end of the guard portion 6. As an example, the tape cutter 1 may be configured so that the front end of the tape end T1 is located slightly forward of the front end of the guard portion 6. In this case as well, the tape end T1 is protected on the left, right, and bottom by the guard portion 6, so that it is less likely to stick to surrounding objects.

[0081] Although the illustration shows an example in which the tape cutter 1 is placed on a surface for use, the tape cutter 1 can also be used by hand, as described above. For example, a user can grip the tape cutter 1 with one hand, pull out the tape end T1 with the other hand and apply it to the target surface, and then move the gripping hand to move the tape cutter 1, thereby pulling out an appropriate amount of adhesive tape and applying it to the target surface. When cutting, as described above, the user presses down the handle portion 7 to advance the cutting blade 31 and the pressing portion 33, and then turns the wrist to press the adhesive tape T against the tape cutter 1 and cut the adhesive tape T.

[0082] As an example, the tape cutter 1 is formed by molding each component except for the cutting blade 31 using, for example, a resin material. As an example, the tape cutter 1 is formed such that the attachment portion 2, the right wall portion 41, and the guard portion 6 are integrally formed.

[0083] The above describes exemplary embodiments of the tape cutter and the guard portion of the tape cutter according to the present invention, but these are merely examples of the present invention and the present invention is not limited to these. The present invention also includes combinations of the above embodiments and their modifications, as well as various other modifications. Various additions, modifications, and partial deletions are possible within the scope of the conceptual idea and spirit of the present invention, which is derived from the content defined in the claims and their equivalents. [Explanation of symbols]

[0084] 1...tape cutter, 2...mounting portion, 20...main body, 21...stopping portion, 3...blade portion, 31...cutting blade, 32...holding portion, 33...pressing portion, 34...second sliding portion, 35...first guide portion, 4...right support portion, 41...right wall portion, 42...front wall portion, 43...rear wall portion, 44...second guide portion, 5...left support portion, 51...left wall portion, 52...front wall portion, 53...rear wall portion, 6...guard portion, 61...protective wall, 611...middle portion, 612...protective portion, 62...support wall, 63...bottom wall, 64...reinforcing wall, 7...handle portion, 71...upper portion, 72...lower portion, 73...shaft portion, 74...torsion spring, 75...first sliding portion.

Claims

1. A tape cutter for attaching a tape roll and feeding out and cutting an adhesive tape forward, a mounting portion for mounting a tape roll; a blade for cutting the adhesive tape; a support portion that supports the blade portion; a guard portion disposed below the blade portion, The guard portion has a middle portion to which the tape end of the adhesive tape adheres and a pair of protection portions that guard both sides of the tape end, and has a finger insertion space formed by the middle portion and the protection portions. A tape cutter characterized by:

2. The blade portion is accommodated in the support portion so as to be able to advance and retreat. The tape cutter according to claim 1 .

3. The blade portion has a cutting blade and a holding portion for holding the cutting blade, and a pressing portion on the lower surface of the holding portion for pressing the adhesive tape against the middle portion of the guard portion when the blade portion advances. The tape cutter according to claim 2 .

4. The mounting portion has a finger rest portion for resting a finger on the inner periphery of the main body which is annular in side view. The tape cutter according to claim 1 .

5. A guard part of a tape cutter that is attached to a tape roll and feeds out and cuts an adhesive tape forward, It is arranged below the blade for cutting the adhesive tape, The adhesive tape has a middle section to which the tape end of the adhesive tape adheres, and a pair of protective sections that guard both sides of the tape end, and has a finger insertion space formed by the middle section and the protective sections. A guard portion of a tape cutter.

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