CN108657863B

CN108657863B - Belt cutter

Info

Publication number: CN108657863B
Application number: CN201810250402.5A
Authority: CN
Inventors: 井川英志; 野村亮太
Original assignee: Kokuyo Co Ltd
Current assignee: Kokuyo Co Ltd
Priority date: 2017-03-27
Filing date: 2018-03-26
Publication date: 2023-11-24
Anticipated expiration: 2038-03-26
Also published as: JP2021178734A; JP2018162150A; CN108657863A; CN116281364A; JP7251572B2; JP7241457B2

Abstract

A tape cutter used by clamping any part of a tape wound in a circular shape by a 1 st clamping part and a 2 nd clamping part, thereby improving the holding property of the tape. The tape cutter for detachably holding a tape in a wound state having a circular ring shape is provided with a 1 st clamping part and a 2 nd clamping part for clamping any part in the circumferential direction of the tape, and a pressing member for pressing the 2 nd clamping part against the 1 st clamping part, and the 2 nd clamping part is rotatably held by the pressing member.

Description

Belt cutter

Technical Field

The present invention relates to a tape cutter (english) used by sandwiching an arbitrary portion of a tape (adhesive tape) wound in a circular shape from inside and outside.

Background

Conventionally, as such a tape cutter, a clip (english) tape cutter is known in which an arbitrary portion of a tape wound in a circular shape is gripped by a 1 st grip portion and a 2 nd grip portion which are pivotally connected by a single shaft.

However, in such a clip type tape cutter, since the relative angle between the 1 st nip portion and the 2 nd nip portion changes, a gap is generated between the nip portion and the tape with a change in the thickness of the tape. Therefore, the holding force may be biased to only one side edge of the belt, which may cause a problem in the belt retention.

Prior art literature

Patent literature

Patent document 1: japanese unexamined patent publication No. 6-39472

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above-described points, and an object thereof is to improve the tape holding performance in a tape cutter used by clamping an arbitrary portion of a tape wound in an annular shape by a 1 st clamping portion and a 2 nd clamping portion.

Technical scheme for solving problems

The invention described in claim 1 provides a tape cutter for detachably holding a tape in a wound state in an annular shape, comprising: a 1 st clamping part and a 2 nd clamping part, wherein the 1 st clamping part and the 2 nd clamping part clamp a desired part of the belt in the circumferential direction; and a pressing member that presses the 2 nd clamping portion against the 1 st clamping portion, wherein the belt cutter holds the 2 nd clamping portion to be movable.

The invention described in claim 2 provides the tape cutter according to claim 1, wherein the 2 nd nip portion has an opposite surface recessed on a side facing the tape so that a central portion is separated from the tape and both end portions are close to the tape.

The invention according to claim 3 provides the tape cutter according to claim 2, wherein the opposing surface of the 2 nd nip portion is a surface having a groove extending in the circumferential direction of the tape, and wherein the tape cutter is configured such that a side edge portion of the tape is engaged with the groove.

The invention described in claim 4 provides the tape cutter according to the invention described in claim 1, 2 or 3, wherein the 1 st clamping portion is disposed on the outer peripheral side of the tape and the 2 nd clamping portion is disposed on the inner peripheral side of the tape, and wherein the 1 st clamping portion is provided with a cutter for cutting and separating the tip end portion of the tape.

The invention according to claim 5 provides the tape cutter according to claim 4, wherein the cutter is disposed further inward than the outer edge of the 1 st holding portion.

The invention according to claim 6 provides the tape cutter according to claim 5, wherein the cutter is disposed so as to be inclined at an acute angle with respect to a tangent line of the tape.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the belt retention can be improved without generating a gap between the belt and the belt.

Drawings

Fig. 1 is a front perspective view showing a belt cutter according to an embodiment of the present invention.

Fig. 2 is a rear perspective view showing the tape cutter of this embodiment.

Fig. 3 is a front view showing the tape cutter of this embodiment.

Fig. 4 is a right side view showing the tape cutter of this embodiment.

Fig. 5 is a plan view showing the tape cutter of this embodiment.

Fig. 6 is a sectional view taken along the line A-A in fig. 3.

Fig. 7 is a sectional view taken along line B-B in fig. 3.

Fig. 8 is an exploded perspective view showing the tape cutter of this embodiment.

Fig. 9 is an exploded perspective view showing the tape cutter of this embodiment.

Fig. 10 is a perspective view showing a use state of the tape cutter of this embodiment.

Fig. 11 is a plan view showing a use state of the tape cutter of this embodiment.

Fig. 12 is a front sectional view taken along line D-D in fig. 11.

Fig. 13 is a side cross-sectional view of the belt cutter as a whole along the line E-E in fig. 12.

Fig. 14 is a side cross-sectional view of the belt cutter assembly taken along line F-F in fig. 12.

Fig. 15 is a right side view showing a tape cutter according to another embodiment of the present invention.

Fig. 16 is a bottom view showing the belt cutter of this embodiment.

Description of the reference numerals

C … belt cutter

1 st clamping part of 1 …

The outer edge of the 1 st clamping part 1a …

2 nd clamping part of 2 …

3 … pressing member

3a … base end portion

3b … rotating end

15 … cutter

43 … opposite surfaces

43a … opposite face central portion

43b … opposite end portions

43c … groove

T … belt

Side edge of Tc … belt

Tip end of Ts … tape

Detailed Description

An embodiment of the present invention will be described below with reference to fig. 1 to 14.

The present embodiment is an embodiment in which the present invention is applied to a clip-type tape cutter C.

The tape cutter C is a tape cutter for detachably holding a tape T in a wound state in a circular ring shape as shown in fig. 10, and includes, as shown in fig. 1 to 14, a 1 st nip portion 1 and a 2 nd nip portion 2 sandwiching an arbitrary portion in the circumferential direction of the tape T, and a pressing member 3 for pressing the 2 nd nip portion 2 against the 1 st nip portion 1.

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

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

As shown in fig. 1, 2, 4, 6 to 9, and 12 to 14, the cover 11 includes a bearing portion 17 for pivotally connecting the 2 nd clip portion 2 to the tape T, a spring stopper 19 provided in the vicinity of the bearing portion 17, and a recess 21 for fitting and connecting the blade stopper 13, and includes a 1 st operation portion 23 at a base end on the opposite side of the tape T. The bearing 17 includes a pair of plate-like protrusions 25 erected in the vicinity of the base end of the cover 11, and shaft holes 17a are provided in the two protrusions 25 so that the shaft centers coincide. The spring stopper 19 is a cylindrical member, and is provided at a position closer to the base end edge than the bearing portion 17. The recess 21 is formed between the pair of side walls 27, and a plurality of ribs 29 receiving the blade stopper 13 are provided from the inner side surface 27a of the side wall 27 over the bottom surface 21a of the recess 21. The receiving surface 29a of each rib 29 is inclined so as to gradually spread in the belt T direction. At both ends of the recess 21 in the longitudinal direction, engagement recesses 31 for fixing the blade stopper 13 are formed. As shown in fig. 1, 2, 4, 5, 8, 9, 11, and 12, a wall thickness missing portion 33 (japanese: pirate portion) having a width dimension wider than the maximum bandwidth to be used is formed on an outer surface 27a of one side wall 27 constituting the recessed portion 21.

As shown in fig. 6 to 9 and 12 to 14, the blade stopper 13 is a thick plate-like member fitted in the recess 21, the upper surface 13a is formed in a partial cylindrical surface shape substantially corresponding to the outer peripheral surface Ta of the belt T, and both side surfaces 13b are inclined so as to be in contact with or close to the receiving surface 29a of the rib 29. In other words, the upper surface 13a of the blade stopper 13 has an arc shape substantially along the outer peripheral surface Ta of the tape T in a front cross section. The bottom surface 13c of the insert stopper 13 faces the bottom surface 21a of the recess 21 with a gap therebetween. At both end surfaces 13d in the longitudinal direction of the blade stopper 13, engagement claws 35 are provided which engage with the engagement concave portions 31 of the concave portion 21. One engagement claw 35 is provided at the tip of an elastic wall 37 that is elastically deformable in the thickness direction, and both engagement claws 35 can be engaged with the corresponding engagement concave portions 31 by the temporary elastic deformation of the elastic wall 37. A 1 st projection 39, which is formed to be a spherical bulge, for example, for positioning the cutter blade 15, and a 2 nd projection 41, which is formed to be a thick plate, for example, are formed on one side surface 13b of the blade stopper 13, and the cutter blade 15 can be spliced to the side surface 13b of the blade stopper 13 in a positioned state by fitting the 1 st projection 39 to a circular hole of the cutter blade 15 and fitting the 2 nd projection 41 to a rectangular hole of the cutter blade 15. In this way, the cutter 15 is attached to the 1 st clamping portion 1 in a state of being clamped between the side surface 13b and the receiving surface 29a of the rib 29 by fitting and connecting the blade stopper 13 to the recess 21 of the cover 11 after the cutter 15 is joined to the side surface 13b. In this attached state, the 2 nd projection 41 is fitted between the ribs 29 to position the blade stopper 13 with respect to the cover 11. In this way, the 1 st clamping portion 1 is provided with a cutter 15 for cutting and separating the tip portion Ts of the tape T, and in this attached state, the cutter 15 is located inside the outer edge 1a of the 1 st clamping portion 1. The cutter 15 is disposed obliquely at an acute angle with respect to a tangent line L1 of the tape T, and a cutting edge 15x of the cutter 15 is set to be close to an outer peripheral surface Ta of the tape T. Further, a stopper projection 42 for preventing the tape T from being disposed at a position where the cutter 15 is not present is provided at an end portion of the upper surface 13a of the blade stopper 13 near the bearing portion 17.

The 2 nd nip portion 2 is disposed on the inner peripheral surface Tb side, which is the inner peripheral side of the belt T, and is rotatably held by the pressing member 3.

The 2 nd nip portion 2 has an opposing surface 43 on a side facing the belt T, and the opposing surface 43 is recessed such that a central portion 43a is separated from the belt T and both end portions 43b are close to the belt T. The facing surface 43 is a surface having a plurality of grooves 43c extending in the circumferential direction of the tape T, and is configured such that both side edge portions Tc of the tape T are engaged with any 2 grooves of the plurality of grooves 43 c.

As will be described in detail, as shown in fig. 1, 2, 4, 6 to 10, and 12 to 14, the 2 nd nip portion 2 is a thick plate-like member bent so that the center portion is separated from the tape T and the both end portions are close to the tape T, and the width dimension of one single half portion (japanese: sheet half portion) 45 and the width dimension of the other single half portion 47 are set to be larger than the width dimension of the center portion 44 and the single half portion. Bearing holes 49 are provided on both side surfaces of the central portion 44. As described above, the plurality of grooves 43c are formed in parallel on the facing surface 43 of the 2 nd nip portion 2 facing the belt T, and the entire facing surface 43 is also formed in a partial cylindrical shape substantially along the inner peripheral surface Tb of the belt T. In other words, the facing surface 43 is substantially arc-shaped along the inner peripheral surface Tb of the tape T in front view. Further, when the tape T is cut, the finger is caught on the upper surface of the center portion 44 of the 2 nd nip portion 2, and an anti-slip groove 50 is formed on the upper surface of a portion crossing the other single half portion 47 from the center portion 44 for anti-slip.

The 2 nd clamp 2 described above is attached to the rotating end 3b of the pressing member 3 so as to be capable of a seesaw operation.

The pressing member 3 is a cantilever-shaped member rotatably supporting the base end portion 3a to the 1 st clamping portion 1, and rotatably holds the 2 nd clamping portion 2 at a rotating end portion 3b.

As shown in fig. 1, 2, 5 to 11, 13, and 14, the pressing member 3 is integrally provided with a base end side single half 51 and a binary rotating end side single half 53. The 2 nd operation portion 55 is provided at the base end of the base end side single half 51, and a pair of protrusions 57 each having a shaft 61 pivotally supported by the bearing portion 17 and a spring stopper 59 are provided at the surface side of the base end side single half 51 facing the tape T. The two protrusions 57 are members disposed inside the pair of protrusions 25 of the 1 st clamp 1, and the shaft 61 is rotatably supported by the shaft holes 17a of the bearing 17 by elastic deformation of the members. The pressing member 3 is biased to rotate in a direction in which the rotation end portion 3b of the pressing member 3 approaches the 1 st clamping portion 1 by a compression coil spring 60 disposed between the spring stoppers 19 and 59. Coupling shafts 63 are provided so as to protrude in correspondence with the respective axes of the opposite surfaces 53a of the paired rotating end-side single halves 53 of the pressing member 3, and the coupling shafts 63 are fitted into and connected to the bearing holes 49 of the 2 nd holding portion 2 by elastic deformation of the members. The bearing hole 49 of this embodiment includes a hole body 49a having a circular cross section, and a key groove portion 49b recessed in a part of the inner peripheral surface of the hole body 49 a. On the other hand, the coupling shaft 63 fitted and connected to the bearing hole 49 includes a shaft body 63a rotatably fitted to the hole body 49a, and a protrusion 63b protruding from the outer peripheral surface of the shaft body 63a and entering the key groove portion 49b. The protrusion 63b is a member having a width smaller than the groove width of the key groove portion 49b, and the protrusion 63b reciprocates in the key groove portion 49b, whereby the 2 nd clamp portion 2 can rotate relative to the pressing member 3 within a predetermined angular range.

As shown in fig. 5 and 11, the width of the pressing member 3 of this embodiment corresponds to the width of the other single half 47 of the second clamping portion 2. The dimension of the separation between the rotating end single halves 53 of the pressing member 3 approximately corresponds to the width dimension of the single half 45 of the one of the 2 nd clamping portions 2.

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

In the non-use state shown in fig. 1 to 7, the pressing member 3 is biased in the direction in which the rotating end portion 3b of the pressing member 3 approaches the 1 st clamp portion 1 by the biasing force of the compression coil spring 60, and therefore the 2 nd clamp portion 2 is held at the position closest to the 1 st clamp portion 1. When the 1 st operation portion 23 provided in the 1 st clamp portion 1 and the 2 nd operation portion 55 provided in the pressing member 3 are operated from this state in directions approaching each other by pinching with fingers or the like, the compression coil spring 60 is compressed and the whole is operated in a state in which the clip is opened. That is, when the 1 st operation portion 23 and the 2 nd operation portion 55 are operated in the direction of approaching each other, the rotating end portion 3b of the pressing member 3 moves in the direction of separating from the 1 st clamping portion 1, and the 2 nd clamping portion 2 pivotally supported by the pressing member 3 is separated from the 1 st clamping portion 1. When the operation is stopped after the desired portion of the tape T is inserted between the 1 st clamping portion 1 and the 2 nd clamping portion 2 in this state, the desired portion of the tape T is clamped by the 1 st clamping portion 1 and the 2 nd clamping portion 2 from the inside and the outside by the urging force of the compression coil spring 60, and the tape T is put into the use state as shown in fig. 10 to 14. In this use state, the outer peripheral surface Ta of the tape T is spliced to the upper surface 13a of the blade stopper 13 of the 1 st nip portion 1, and the inner peripheral surface Tb of the tape T is pressed by the 2 nd nip portion 2 in the 1 st nip portion 1 direction. At this time, the both side edges Tc of the belt T are engaged with any 2 grooves among the plurality of grooves 43c of the 2 nd nip portion 2, and the belt T is prevented from being shifted in the axial direction. 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 engaged with any one of the grooves 43c provided in one single half portion of the 2 nd nip portion 2, and the other side edge portion T2c of the paper tube T2 is engaged with any one of the grooves 43c provided in the other single half portion of the 2 nd nip portion 2. Since the plurality of grooves 43c are provided in parallel, the present invention can be applied to various tapes T having different width dimensions.

In such a use state, the tip end portion Ts is pulled out from the tape T by shifting the tip end portion Ts to the 1 st nip portion 1 side and pulling the tip end portion Ts in the arrow X direction in fig. 12, whereby the root portion of the tip end portion Ts is cut by the cutter 15, and the tip end portion Ts can be cut and separated from the tape T in a wound state. In the case of continuously cutting the distal end portion Ts of the tape T, the 1 st operation portion 23 and the 2 nd operation portion 55 are pinched each time cutting is completed to release the clamped state by the 1 st clamping portion 1 and the 2 nd clamping portion 2, and the distal end portion Ts may be pulled out by moving the clamped position in the circumferential direction, and the same operation may be performed.

In the case of the tape cutter having such a configuration, the 2 nd clamp portion 2 is seesaw-operated with respect to the pressing member 3, and therefore the 2 nd clamp portion 2 can press both side edge portions Tc of the tape T in the 1 st clamp portion 1 direction with a uniform force. Therefore, even when the pressing member 3 is rotated, the 2 nd nip portion 2 can be uniformly brought into contact with the inner peripheral surface Tb of the belt T, and therefore, occurrence of such a problem that a gap is formed between the 2 nd nip portion and one side edge portion of the belt T, the pressing force of the belt T becomes uneven, and the like can be effectively prevented. That is, the gap between the 2 nd nip portion 2 and the belt T is eliminated, and the holding property is improved.

In this embodiment, the 2 nd nip portion 2 has the facing surface 43 recessed so that the central portion 43a is separated from the belt T and the both end portions 43b are close to the belt T on the side facing the belt T, and therefore, the displacement in the lateral direction of the belt T can be suppressed. In the present embodiment, the facing surface 43 of the 2 nd clamp 2 is a member having a plurality of grooves 43c extending in the circumferential direction of the tape T, and is configured such that the both side edge portions 43 of the tape T are engaged with any 2 grooves of the plurality of grooves 43c, and therefore, even when used for the tape T having various width dimensions, the tape T can be prevented from being laterally displaced to ensure a stable holding state. In order to achieve the slip prevention of the belt, a form in which a plurality of protrusions are provided on the opposite surface of the 2 nd nip portion instead of a plurality of grooves may be adopted, but if the form is such that a plurality of grooves 43c are provided as described above, both side edge portions Tc of the belt T linearly contact the grooves 43c, and therefore the belt T can be more effectively held. In the case of a single width-sized belt, the surface of the 2 nd nip portion facing the belt may be shaped so as to follow the inner peripheral surface of the belt.

In the present embodiment, since the cutter 15 is provided on the inner side of the outer edge 1a of the 1 st nip portion 1, it is difficult for a hand to directly contact the cutting edge 15x of the cutter 15, and safety can be improved. Further, although safety can be ensured by other methods such as shaping the edge of the cutter blade, if the cutter blade 15 is provided at a position further inward than the outer edge of the 1 st nip portion 1, safety is excellent in that safety can be ensured regardless of the shape of the edge 15x of the cutter blade 15.

Further, since the edge 15x of the cutter 15 is brought close to the tape T, the position where the tape T is cut can be easily known. Further, since the cutter 15 is disposed so as to be inclined at an acute angle with respect to the tangent line L1 of the tape T, the movable range of the tip end portion Ts of the drawn tape T in the arrow X direction in fig. 12 can be ensured to be large, and therefore the tip end portion Ts of the tape T can be cut and separated without requiring a large force. In particular, in this embodiment, the wall thickness missing portion 33 is provided on the side wall 27 of the 1 st clamp portion 1, so that the ease of cutting and separating can be improved. Further, a seal (english) for preventing the risk of the presence of the cutter 15 may be attached to the thickness-missing portion 33.

The present embodiment is not limited to the above-described embodiments.

For example, in the above embodiment, the pressing member is a cantilever-shaped member having a base end rotatably supported by the 1 st clamp portion and a clip-type tape cutter having the 2 nd clamp portion rotatably held by a rotating end of the pressing member has been described, but the present invention is not limited to such a tape cutter and can be similarly applied to a tape cutter in which the pressing member performs various movements. However, if the belt cutter is applied to a clip type belt cutter, the occurrence of a gap between the clip portion and the belt can be prevented by a simple configuration as described above, and the holding performance can be effectively improved.

In addition, in the case of using the clip type tape cutter, the tape cutter of the above embodiment is not limited, and various modifications may be made. In addition to the belt cutter in which the 2 nd clamp portion is supported by the distal end of the pressing member with a shaft, the pressing member and the 2 nd clamp portion may be coupled by a universal joint system, a resin hinge system, or the like.

In the above embodiment, the case where the 1 st nip portion is disposed on the outer peripheral side of the belt and the 2 nd nip portion is disposed on the inner peripheral side of the belt has been described, but the 1 st nip portion may be disposed on the inner peripheral side of the belt and the 2 nd nip portion held by the pressing member may be disposed on the outer peripheral side of the belt by adjusting the shape of the nip portion. In this case, a cutter is provided on the 2 nd nip side.

The 1 st clamping portion is not limited to the clamping portion of the embodiment, and may be variously modified. An example of this is shown in fig. 15 and 16 and described below. The tape cutter C2 of this embodiment is configured such that the opposite surface 1x of the 1 st nip portion 1 is easily placed on a plane such as a ceiling, and the opposite surface 1x is provided with a slip-preventing groove 1y. The tape cutter C2 has the same configuration as the tape cutter C described with reference to fig. 1 to 14 except for the above-described aspects, and the same names and reference numerals are given to the respective portions corresponding to the portions of the tape cutter C, and the description thereof is omitted.

In the above embodiment, the tape cutter has a plurality of grooves extending in the circumferential direction of the tape on the opposite surface of the 2 nd clamp portion, and both side edge portions of the tape are engaged with 2 grooves of the grooves, but even in a configuration in which only 1 groove is provided on the opposite surface of the 2 nd clamp portion, and the side edge portions of the tape are engaged with the grooves in which only 1 groove is provided, the anti-slip and anti-tilting of the tape can be realized.

Further, various modifications are possible within the scope of not impairing the gist of the present invention.

Claims

1. A tape cutter for detachably holding a tape in a wound state in a circular ring shape, the tape cutter comprising:

a 1 st clamping portion and a 2 nd clamping portion, the 1 st clamping portion and the 2 nd clamping portion clamping any portion of the belt in the circumferential direction; and

a pressing member that presses the 2 nd clamping portion against the 1 st clamping portion,

the pressing member rotatably supports the base end portion at the 1 st clamping portion and rotatably holds the 2 nd clamping portion at the rotating end portion,

the 1 st clamping part is provided with a cutter for cutting off and separating the top end part of the belt,

the 2 nd nip portion has a center portion in a width direction of the 2 nd nip portion on a side facing the belt, separated from the belt and both end portions approaching opposite surfaces of the belt,

the 1 st clamping part is arranged on the outer peripheral side of the belt, the 2 nd clamping part is arranged on the inner peripheral side of the belt, the upper surface of the 1 st clamping part is formed into a partial cylindrical surface shape which approximately corresponds to the outer peripheral surface of the annular belt, and the cutting knife is arranged at the side end of the upper surface when the upper surface is observed from the annular direction of the belt.

2. The tape cutter of claim 1,

the opposite surface of the 2 nd clamp portion is a surface having a groove extending in a circumferential direction of the tape, and the tape cutter is configured such that a side edge portion of the tape is engaged with the groove.

3. The tape cutter of claim 1,

the cutter is disposed at a position inside the outer edge of the 1 st clamping portion.

4. The tape cutter of claim 3,

the cutter blade is disposed obliquely at an acute angle with respect to a tangent line of the belt.

5. The tape cutter of claim 1,

the pressing member is a cantilever-like member having a base end rotatably supported by the 1 st clamping portion, and the 2 nd clamping portion is rotatably held by a rotating end of the pressing member.