JP7251572B2 - Tape cutter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tape cutter that is used by holding an arbitrary portion of a tape wound in an annular shape from the inside and outside.

Conventionally, as this type of tape cutter, a clip-type tape cutter is used by clamping an arbitrary portion of a tape wound in an annular shape by a first clamping portion and a second clamping portion which are pivotally connected by a single shaft. are known.

However, in such a device, since the relative angle between the first clamping portion and the second clamping portion changes, a gap is generated between the clamping portion and the tape as the thickness of the tape changes. . As a result, the clamping force is inevitably biased at only one side edge of the tape, which may cause a problem in holding the tape.

Japanese Utility Model Laid-Open No. 6-39472

Focusing on the above points, the present invention improves tape retention in a tape cutter that is used by pinching an arbitrary portion of a tape wound in an annular shape by a first pinching portion and a second pinching portion. The purpose is to

A tape cutter according to the invention of claim 1 is a tape cutter that detachably holds a tape in a wound state forming an annular shape, and the outer circumference and the inner circumference of the tape are arranged at any point in the circumferential direction of the tape. It comprises first and second clamping portions that clamp from a clamping direction , and a pressing member that presses the second clamping portion toward the first clamping portion, and the above-described nipper is located near the proximal end of the first clamping portion. The base end portion of the pressing member is supported, and the second holding portion is rotatably and seesaw-operably held at the end portion of the pressing member opposite to the base end portion.

In the tape cutter according to the invention of claim 2, in the tape cutter having the configuration of claim 1, the center portion is separated from the first holding portion on the side facing the first holding portion, and both ends are the first holding portion . It has an opposing surface that is recessed so as to approach one clamping portion .

According to a third aspect of the present invention, there is provided a tape cutter according to the second aspect, wherein the facing surface of the second holding portion has a groove extending in the circumferential direction of the tape.

According to a fourth aspect of the present invention, there is provided a tape cutter according to the first, second, or third aspect, wherein the first holding portion is arranged on the outer peripheral side of the tape, and the second holding portion is arranged on the outer peripheral side of the tape. is arranged on the inner peripheral side of the tape, and a blade for cutting off the leading end of the tape is provided at the first clamping portion.

According to a fifth aspect of the present invention, there is provided a tape cutter having the structure according to the fourth aspect, wherein the blade is provided inside the outer end of the first clamping portion in the tape drawing-out direction .

According to a sixth aspect of the present invention, there is provided a tape cutter having the structure according to the fifth aspect, wherein the cutter blade is inclined at an acute angle with respect to the tape pulled out toward the cutter blade. there is
According to a seventh aspect of the invention, there is provided a tape cutter having the structure according to the first, second, third, fourth, fifth, or sixth aspect, wherein the pressing member rotates its proximal end to the first holding portion. The second clamping portion is rotatably held at a rotating end of the pressing member opposite to the base end of the pressing member.

According to the present invention, it is possible to improve the retention of the tape without creating a gap with the tape.

BRIEF DESCRIPTION OF THE DRAWINGS The front side perspective view which shows the tape cutter which concerns on one Embodiment of this invention. The back side perspective view which shows the tape cutter which concerns on the same embodiment. The front view which shows the tape cutter which concerns on the same embodiment. The right view which shows the tape cutter which concerns on the same embodiment. The top view which shows the tape cutter which concerns on the same embodiment. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3; FIG. 4 is a cross-sectional view taken along line BB in FIG. 3; The exploded perspective view which shows the tape cutter which concerns on the same embodiment. The exploded perspective view which shows the tape cutter which concerns on the same embodiment. The perspective view which shows the usage condition of the tape cutter which concerns on the same embodiment. The top view which shows the use condition of the tape cutter which concerns on the same embodiment. FIG. 12 is a front cross-sectional view taken along line DD in FIG. 11; FIG. 13 is a side sectional view of the entire tape cutter taken along line EE in FIG. 12; FIG. 13 is a side cross-sectional view of the entire tape cutter taken along line FF in FIG. 12; The right view which shows the tape cutter which concerns on other embodiment of this invention. The bottom view which shows the tape cutter which concerns on the same embodiment.

One embodiment of the invention is described below with reference to FIGS. 1-14.

This embodiment is a case where the present invention is applied to a clip-type tape cutter C. As shown in FIG.

As shown in FIG. 10, the tape cutter C detachably holds the tape T wound in an annular shape. As shown in FIGS. and a pressing member 3 that presses the second clamping portion 2 toward the first clamping portion 1 .

The tape T is an ordinary one in which a tape body T1 is wound around the outer periphery of a cylindrical paper tube T2.

As shown in FIGS. 1, 2, 4, 8, 9 and 12, the first clamping portion 1 clamps a cutter blade 15 between a cover 11 and a blade stopper 13. It is arranged on the outer peripheral side of the tape T, that is, on the outer peripheral surface Ta side.

The cover 11, as shown in FIGS. 1, 2, 4, 6 to 9 and 12 to 14, has a surface facing the tape T for pivotally attaching the second holding portion 2. , a spring retainer 19 provided in the vicinity of the bearing portion 17, and a concave portion 21 for fitting the blade stopper 13. is provided with an operating portion 23 of . The bearing portion 17 consists of a pair of plate-like projections 25 erected in the vicinity of the base end of the cover 11. Both projections 25 are provided with axial holes 17a aligned with their axial centers. It is The spring retainer 19 has a cylindrical shape and is positioned closer to the proximal edge than the bearing portion 17 . The recessed portion 21 is formed between a pair of side walls 27, and a plurality of ribs 29 for receiving the blade stopper 13 are provided from the inner side surface 27a of the side wall 27 to the bottom surface 21a of the recessed portion 21. As shown in FIG. The receiving surface 29a of each rib 29 is inclined so as to gradually widen in the tape T direction. Engagement recesses 31 for fixing the blade stopper 13 are formed at both longitudinal ends of the recessed portion 21 . 1, 2, 4, 5, 8, 9, 11 and 12, a usable A recessed portion 33 having a width dimension larger than the maximum tape width is formed.

As shown in FIGS. 6 to 9 and 12 to 14, the blade stopper 13 is in the form of a thick plate that fits into the concave portion 21, and the upper surface 13a substantially corresponds to the outer peripheral surface Ta of the tape T. It is formed in a partially cylindrical shape, and both side surfaces 13b are slanted so as to contact or come close to the receiving surfaces 29a of the ribs 29. As shown in FIG. In other words, the upper surface 13a of the blade stopper 13 has an arcuate shape substantially along the outer peripheral surface Ta of the tape T in a front sectional view. The bottom surface 13c of the blade stopper 13 faces the bottom surface 21a of the concave portion 21 with a gap therebetween. Engagement claws 35 that engage with the engagement recesses 31 of the recessed portion 21 are provided on both longitudinal end faces 13d of the blade stopper 13 . One of the engaging claws 35 is provided at the tip of an elastic wall 37 that is elastically deformable in the thickness direction. The mating recesses 31 are adapted to be engaged with each other. On one side surface 13b of the blade stopper 13, for positioning the cutter blade 15, for example, a spherical first protrusion 39 and a thick plate-like second protrusion 41 are formed. By fitting the first protrusion 39 into the circular hole of the cutter blade 15 and fitting the second protrusion 41 into the rectangular hole of the cutter blade 15, the cutter blade 15 is attached to the side surface 13b of the blade stopper 13. It can be spliced in a positioned state. In this way, after the cutter blade 15 is brought into contact with the side surface 13b, the blade stopper 13 is fitted into the concave portion 21 of the cover 11, so that the cutter blade 15 is connected to the side surface 13b and the rib. 29 and the receiving surface 29a thereof, and attached to the first clamping portion 1. As shown in FIG. In this attached state, the second projection 41 is fitted between the ribs 29 to position the blade stopper 13 with respect to the cover 11 . In this manner, the first holding portion 1 is provided with the cutter blade 15 for cutting off the leading end portion Ts of the tape T. It is positioned inside the outer edge 1 a of the portion 1 . The cutter blade 15 is inclined to form an acute angle with respect to the tangent line L1 of the tape T, and the blade edge 15x is set so as to be close to the outer peripheral surface Ta of the tape T. As shown in FIG. In addition, a stopper projection 42 is provided at the end portion of the upper surface 13a of the blade stopper 13 near the bearing portion 17 in order to prevent the tape T from being disposed where the cutter blade 15 does not exist.

The second holding portion 2 is arranged on the inner peripheral side of the tape T, that is, on the inner peripheral surface Tb side, and is rotatably held by the pressing member 3 .

The second clamping portion 2 has a concave facing surface 43 on the side facing the tape T so that the central portion 43a is away from the tape T and both end portions 43b are close to the tape T. As shown in FIG. The facing surface 43 has a plurality of grooves 43c extending in the circumferential direction of the tape T, and both side edges Tc of the tape T are engaged with any two of the plurality of grooves 43c. It is configured.

Specifically, as shown in FIGS. 1, 2, 4, 6 to 10, and 12 to 14, the second holding portion 2 has a central portion separated from the tape T and both end portions It is a thick plate curved to approach the tape T, and the width dimension of the other half portion 47 is set larger than the width dimension of the central portion 44 and the one half portion 45 . Bearing holes 49 are provided on both side surfaces of the central portion 44 . As described above, a plurality of grooves 43c are formed in parallel on the facing surface 43 of the second holding portion 2 facing the tape T, and the facing surface 43 as a whole also has the inner peripheral surface Tb of the tape T. It has a partial cylindrical shape substantially along the In other words, the facing surface 43 has an arcuate shape substantially along the inner peripheral surface Tb of the tape T when viewed from the front. In addition, on the upper surface of the central portion 44 of the second holding portion 2, fingers can be hung when cutting the tape T, and the other side of the central portion 44 is attached to prevent slippage. A non-slip groove 50 is formed on the upper surface of the portion straddling the half portion 47 .

The second holding portion 2 described above is attached to the rotating end portion 3b of the pressing member 3 so as to be able to seesaw.

The pressing member 3 is in the form of a cantilever arm having a base end portion 3a rotatably supported by the first clamping portion 1, and a rotating end portion 3b rotatably supports the second clamping portion 2. keeping.

More specifically, as shown in FIGS. 1, 2, 5 to 11, 13 and 14, the pressing member 3 includes a base end side half portion 51 and a bifurcated rotating end side portion. It is integrally provided with the half portion 53 . A second operating portion 55 is provided at the proximal end of the proximal half portion 51, and the surface of the proximal half portion 51 facing the tape T is supported by the bearing portion 17. A spring retainer 59 and a pair of projections 57 each having an axle 61 that extends therethrough are provided. The two projections 57 are arranged inside the pair of projections 25 of the first holding portion 1, and the shaft 61 is inserted into the shaft hole 17a of the bearing portion 17 by utilizing the elastic deformation of the member. Each is rotatably pivoted. A compression coil spring 60 disposed between the spring retainers 19 and 59 biases the pressing member 3 so that its rotating end 3b approaches the first clamping portion 1. As shown in FIG. Coupling shafts 63 are protruding from the facing surfaces 53a of the paired rotating end side half portions 53 of the pressing member 3 with their axial centers aligned with each other. It is fitted into the bearing hole 49 of the second clamping part 2 by utilizing the same. The bearing hole 49 of this embodiment includes a hole body 49a having a perfectly circular cross section and a key groove portion 49b recessed in a portion of the inner peripheral surface of the hole body 49a. On the other hand, the connecting shaft 63 fitted in the bearing hole 49 comprises a shaft body 63a rotatably fitted in the hole body 49a, and a shaft body 63a projecting from the outer peripheral surface of the shaft body 63a and extending into the key groove portion 49b. and a protruding portion 63b that has entered. The protrusion 63b has a width smaller than the groove width of the key groove 49b, and the protrusion 63b reciprocates in the key groove 49b, thereby causing the second clamping portion 2 to move the pressure. It is designed to be rotatable with respect to the member 3 within a certain angular range.

The width dimension of the pressing member 3 of this embodiment corresponds to the width dimension of the other half portion 47 of the second holding portion 2, as shown in FIGS. Further, the distance between the half portions 53 on the rotating end side of the pressing member 3 substantially corresponds to the width dimension of the one half portion 45 of the second holding portion 2 .

Next, the operation of the tape cutter C of this embodiment will be explained.

1 to 7, the rotating end portion 3b of the pressing member 3 is urged in the direction to approach the first holding portion 1 by the urging force of the compression coil spring 60. Two clamping parts 2 are held at positions closest to the first clamping part 1 . From this state, when the first operating portion 23 provided on the first clamping portion 1 and the second operating portion 55 provided on the pressing member 3 are pinched with fingers or the like and operated in opposite directions, the compression coil is opened. The whole operates in such a manner as to open the clip while compressing the spring 60 . In other words, when the first operating portion 23 and the second operating portion 55 are operated in a direction toward each other, the rotating end portion 3b of the pressing member 3 moves away from the first clamping portion 1. The second clamping portion 2 pivotally supported by the pressing member 3 is separated from the first clamping portion 1 . In this state, when a desired portion of the tape T is inserted between the first and second clamping portions 1 and 2 and the operation is stopped, the desired portion of the tape T is moved by the biasing force of the compression coil spring 60 to the above-described second clamping portion. 1 and the second clamping portion 2 from the inside and outside, and is put into use as shown in FIGS. 10-14. In this state of use, the outer peripheral surface Ta of the tape T is in contact with the upper surface 13a of the blade stopper 13 of the first holding portion 1, and the inner peripheral surface Tb of the tape T is held by the second holding portion 2 in the first position. It is pressed in one direction of the holding portion. At this time, both side edge portions Tc of the tape T are engaged with any two of the plurality of grooves 43c of the second holding portion 2, thereby preventing the tape T from slipping in the axial direction. be. That is, in this embodiment, one side edge portion T2c of the paper tube T2 forming the inner peripheral surface Tb of the tape T is located in one of the grooves 43c provided in one half portion of the second holding portion 2. , and the other side edge portion T2c of the paper tube T2 is engaged with one of the grooves 43c provided in the other half portion of the second holding portion 2. As shown in FIG. Since a plurality of these grooves 43c are provided in parallel, it can be applied to various tapes T having different width dimensions.

In such a state of use, the leading end portion Ts is pulled out from the tape T and pulled in the direction of the arrow X in FIG. The base of the portion Ts is cut by the cutter blade 15, and the tip portion Ts can be separated from the tape T in the wound state. When cutting the leading end portion Ts of the tape T one after another, each time the cutting is completed, the first and second operating portions 23, 55 are pinched so that the pinched state by the first and second pinching portions 1, 2 is maintained. Loosen it, move the gripping position in the circumferential direction, pull out the tip portion Ts, and perform the same operation.

With such a configuration, the second holding portion 2 is made to seesaw with respect to the pressing member 3, so that the second holding portion 2 presses both side edges Tc of the tape T with equal force. can be pressed in the direction of the first clamping portion 1 with . Therefore, even though the pressing member 3 is rotating, the second holding portion 2 can be brought into contact with the inner peripheral surface Tb of the tape T evenly. It is possible to effectively prevent the occurrence of such a problem that a gap is formed between the tape T and one side edge of the tape T and the pressing force of the tape T becomes uneven. That is, there is no gap between the second holding portion 2 and the tape T, and the holding property is improved.

Further, in this embodiment, the second clamping portion 2 has a concave facing surface facing the tape T such that the central portion 43a is separated from the tape T and both end portions 43b approach the tape T. 43, lateral deviation of the tape T can be suppressed. Further, in the present embodiment, the facing surface 43 of the second clamping portion 2 has a plurality of grooves 43c extending in the circumferential direction of the tape T, and the two side edge portions 43 of the tape T have the plurality of grooves 43c. Since it is constructed so as to engage with any two of the grooves 43c, it is possible to prevent the lateral shift of the tape T and secure a stable holding state even if it is used for the tape T having various width dimensions. can be done. In addition, in order to prevent the tape from slipping, it is possible to adopt a mode such as providing a large number of protrusions instead of the plurality of grooves on the opposing surface of the second holding portion. In the case where the groove 43c is provided, both side edges Tc of the tape T are in linear contact with the grooves 43c, so that the tape T can be held more effectively. Moreover, when it is sufficient to handle only a tape having a single width dimension, the surface of the second clamping portion facing the tape may be shaped along the inner peripheral surface of the tape.

Furthermore, in the present embodiment, since the cutter blade 15 is provided inside the outer edge 1a of the first holding portion 1, it is difficult for a hand to directly touch the tip 15x of the cutter blade 15, and safety can be improved. can. Safety may be ensured by other methods such as devising the shape of the cutting edge of the cutter blade. This is excellent in that safety can be ensured regardless of the shape of the cutting edge 15x of 15.

In addition, since the cutting edge 15x of the cutter blade 15 is brought closer to the tape T, the cutting position of the tape T is easy to understand. Moreover, since the cutter blade 15 is arranged so as to form an acute angle with respect to the tangent line L1 of the tape T, the movable range of the leading edge Ts of the tape T pulled out in the direction of the arrow X in FIG. Since a large space can be secured, the tip portion Ts of the tape T can be cut off without requiring a large force. In particular, in this embodiment, since the side wall 27 of the first clamping portion 1 is provided with the recessed portion 33, the ease of separation can be enhanced. Moreover, it is also possible to attach a danger-preventing seal or the like to the meat-removal portion 33 to appeal the presence of the cutter blade 15 .

In addition, this embodiment is not restricted to embodiment described above.

For example, in the above-described embodiment, the pressing member is a cantilever arm whose base end is rotatably supported by the first holding member, and the rotating end of the pressing member is attached to the second holding member. Although the clip type holding member is rotatably held, the present invention is not limited to such a type, and can be similarly applied to devices in which the pressing member moves in various ways. However, if it is applied to a clip-type device, it is possible to prevent the occurrence of a gap between the clamping portion and the tape with a simple structure as described above, thereby effectively improving the holding property.

Further, even when a clip type is employed, various modifications are possible without being limited to the above embodiment. For example, the pushing member and the second holding portion may be connected by a universal joint method, a resin hinge method, or the like, instead of supporting the second holding portion using a shaft at the tip of the pressing member.

Furthermore, in the above-described embodiment, the first clamping portion is arranged on the outer peripheral side of the tape, and the second clamping portion is arranged on the inner peripheral side of the tape. Alternatively, the first holding portion may be arranged on the inner peripheral side of the tape, and the second holding portion held by the pressing member may be arranged on the outer peripheral side of the tape. In this case, the cutter blade is provided on the side of the second holding portion.

In addition, the first holding portion is not limited to the one in the above embodiment, and various modifications are possible. One example is shown in FIGS. 15 and 16 and described below. The tape cutter C2 of this aspect has a surface 1x on the side opposite to the tape of the first holding portion 1 that is easy to place on a flat surface such as a top plate, and a non-slip groove 1y is provided on the surface 1x on the side opposite to the tape. It is a thing. This tape cutter C2 has the same configuration as the tape cutter C described with reference to FIGS. 1 to 14 except for the points described above. , and description thereof is omitted.

In the above-described embodiment, the opposing surface of the second clamping portion has a plurality of grooves extending in the circumferential direction of the tape, and both side edges of the tape are aligned with two of the grooves. However, even if only one groove is provided on the opposing surface of the second clamping part and the side edge of the tape engages with the one groove, the tape is prevented from slipping. And tilting can be prevented.

In addition, various modifications may be made within the scope of the present invention.

C... Tape cutter 1... First holding part 1a... Outer edge of first holding part 2... Second holding part 3... Pressing member 3a... Base end part 3b... Rotating end part 15... Cutter blade 43... Opposing surface 43a... Central portion of opposing surface 43b... Edge of opposing surface 43c... Groove T... Tape Tc... Side edge of tape Ts... Tip of tape

Claims (7)

In a tape cutter that detachably holds a tape wound in an annular shape,
first and second clamping portions that clamp an arbitrary portion in the circumferential direction of the tape from a direction sandwiching the outer circumference and the inner circumference of the tape ;
a pressing member that presses the second holding portion toward the first holding portion;
The proximal end portion of the pressing member is supported by the proximal end portion of the first holding portion,
A tape cutter, wherein the second holding portion is rotatably and seesaw-operable at the end portion of the pressing member opposite to the base end portion. The second clamping part has a recessed opposing surface on the side facing the first clamping part such that the center part is away from the first clamping part and both ends approach the first clamping part. 2. The tape cutter of claim 1. 3. The tape cutter according to claim 2, wherein said facing surface of said second clamping portion has grooves extending in the circumferential direction of the tape. The first holding portion is arranged on the outer peripheral side of the tape, and the second holding portion is arranged on the inner peripheral side of the tape, and the leading end of the tape is cut off at the first holding portion. 4. A tape cutter according to claim 1, 2 or 3, further comprising a cutter blade for. 5. The tape cutter according to claim 4, wherein the cutter blade is provided inside the outer end of the first clamping portion in the direction in which the tape is pulled out. 6. The tape cutter according to claim 5, wherein said cutter blade is inclined so as to form an acute angle with respect to said tape pulled out toward said cutter blade. The pressing member is in the form of a cantilever arm having a base end portion rotatably supported by the first clamping portion, and a rotating end that is the end portion of the pressing member opposite to the base end portion. 7. The tape cutter according to claim 1, 2, 3, 4, 5 or 6, wherein said second clamping portion is rotatably held by said portion.

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