JP4679228B2 - Tape cutter with folding function - Google Patents

Description

  The present invention is an adhesive tape such as cloth tape, paper tape, vinyl tape, cellophane tape, masking tape, etc., and of course the function of pulling out and cutting the adhesive tape wound in a roll shape, the corner of the cut end It is related with the tape cutter with a folding function which has a function which can fold only and can form a triangular non-adhesion part.

  Conventionally, when a pressure-sensitive adhesive tape wound in a roll shape is pulled out and cut with a cutter blade, a tape with a folding function that forms a non-adhesive part (tab) along the width direction by folding back the entire cut end. Cutters are well known (Patent Documents 1 to 3).

  However, in such a tape cutter, although there is an advantage that the attached tape can be easily peeled off, only a corner portion of the cut end is folded back because it sometimes causes damage. A tape cutter with a folding function for forming a non-adhesive portion is proposed (Patent Document 4).

  As shown in FIG. 11, the tape cutter with a folding function according to Patent Document 4 has a trapezoidal notch and is fixed to the tape cutter main body with a fixed blade 50 a fixed to the tape cutter body, and fixed by a hinge 51. The cutter blade 50 is composed of a movable blade 50b that is rotatably connected to the blade 50a and biased so as to be flush with the fixed blade 50a by a torsion spring 52, and is in a straight line. When the movable blade 50b is pushed backward with a finger as shown in FIG. 7 (b) with respect to the adhesive tape having the cutting edges attached to both the fixed blade 50a and the movable blade 50b, the adhesive tape 53 is cut. The corner portion 53a at the end is folded back, and a triangular non-adhesive portion 53b is formed at the tip of the adhesive tape 53 as shown in FIG.

JP-A-8-188326 JP-A-9-25045 JP-A-10-250904 JP 2000-247532 A

  However, the tape cutter with the folding function according to the above-mentioned Patent Document 4 is not only complicated because a person has to perform the folding work, but the cut end is notched due to the elasticity of the adhesive tape 53 while the movable blade 50b is being pushed. There is a drawback in that the failure of the folding tends to occur frequently because it is separated from the cutting edge of the movable blade 50b.

  Then, this invention is made | formed in view of the said problem, and makes it a subject to provide the tape cutter with a folding function which can form a triangular non-adhesion part easily and reliably.

This invention which solves the above-mentioned subject is a tape cutter main part which holds a roll of adhesive tape N in a tape cutter with a folding function which folds only the corner of the cut end of adhesive tape N, and forms triangular non-adhesive part O 1, a first cutter blade member 3 supported by the tape cutter body 1 and capable of relative displacement with respect to the tape cutter body 1 in a direction P orthogonal to the adhesive surface of the adhesive tape N to be pulled out, and the first cutter blade The blade 3 is rotatably supported by the member 3 and integrally formed with the blade edge 3 a of the first cutter blade member 3, and the blade edge 4 a is in sliding contact with the surface opposite to the adhesive surface of the adhesive tape N. a second cutter blade member 4 is biased in the direction R to rotate to a position from a position folded back in contact with the surface of the first cutter blade member 3 is flush with the first cutting edge 3a of the cutter blade member 3, the tape To Potter body 1 is relatively displaceably supported, in association with the displacement in one direction T, forming a non-adhesive portion O of the triangular second cutter blade member 4 is folded back only the corners of the cut end of the adhesive tape N Accordingly, the edge 4a of the second cutter blade member 4 is in contact with the surface of the first cutter blade member 3 which is in sliding contact with the surface opposite to the adhesive surface of the adhesive tape N from the position where the blade edge 4a of the first cutter blade member 3 is aligned. A first operating member 10 that acts directly or indirectly against the urging of the direction R in the direction S in which the second cutter blade member 4 is rotated to a position where it is contacted and folded back; An urging means for urging the member 10 so that the first operating member 10 is displaced in the one direction T, and a displacement of the first operating member 10 displaced in the one direction T in the opposite direction U to the standby position. Return means for returning, the first cutter The member 3 includes an engaging portion 3d that engages with the first operating member 10 in order to keep the first operating member 10 in the standby position against the biasing of the biasing means, 3 d of engaging parts are comprised so that engagement with the 1st operation member 10 may be cancelled | released when the 1st cutter blade member 3 displaces to the said direction P. It is characterized by the above-mentioned.

  According to the said structure, in the state before cut | disconnecting the adhesive tape N pulled out from the roll, the 1st cutter blade member 3, the 2nd cutter blade member 4, and the 1st operation member 10 are the positions (standby) in a return direction, respectively. Position). That is, the 1st cutter blade member 3 exists in the position of the direction of an adhesive surface among the directions orthogonal to the adhesive surface of the adhesive tape N, and the 2nd cutter blade member 4 has the blade edge | tip 4a in the 1st cutter blade member. The first operating member 10 is at a position in the direction U opposite to the one direction T. The first operating member 10 is maintained at the standby position even if the first operating member 10 is urged in one direction T by the urging means, and the first operating member 10 is engaged with the engaging portion 3d of the first cutter blade member 3. This is because it cannot be displaced.

  When the cutting of the adhesive tape N is started from the second cutter blade member 4 from this state, since the second cutter blade member 4 is at the standby position, the adhesive tape N is smoothly cut, and the cutting proceeds, When applied to the cutting edge 3 a of the first cutter blade member 3, the first cutter blade member 3 is displaced in a direction P perpendicular to the adhesive surface of the adhesive tape N by a reaction force from the adhesive tape N. Then, the engagement between the engaging portion 3d of the first cutter blade member 3 and the first operating member 10 is released, and thereby the first operating member 10 is displaced in one direction T by the urging means.

  Then, when the first operating member 10 is displaced in one direction T, the second cutter blade member 4 is rotated in the direction S in which the second cutter blade member 4 is folded back, and therefore, the already cut portion of the adhesive tape N is folded back simultaneously. The non-adhesive part O will be formed. On the other hand, the adhesive tape N is further cut, and is completely cut with the cutting edge 3 a of the first cutter blade member 3.

  Here, when the first operating member 10 is displaced in one direction T, it is displaced in the opposite direction U by the action of the return means, and returns to the original standby position. When the first operation member 10 is returned, the second cutter blade member 4 is also returned to the original standby position by urging and is aligned with the cutting edge 3 a of the first cutter blade member 3. In addition, at this time, the first cutter blade member 3 is released from the reaction force from the adhesive tape N and is returned to the standby position, so that the first operating member 10 is an engaging portion of the first cutter blade member 3. The adhesive tape N can be next cut by re-engaging with 3d.

  Further, the present invention is supported by the first cutter blade member 3 so as to be rotatable, and is pushed along with the displacement in the one direction T of the first operation member 10, whereby the second cutter blade member 4. You may make it provide the 2nd operation member 11 which rotates to the direction S which turns back against urging | biasing.

  According to this configuration, when the first operating member 10 is displaced in one direction T, the second operating member 11 is pushed and rotated in the direction S to be turned back, whereby the second cutter blade member 4 is turned in the direction S to be turned back. Rotates and wraps. The second operation member 4 is provided as a means for changing the direction of the force from the first operation member 10 to smooth the rotational displacement of the second cutter blade member 4.

  The present invention also includes a link member 15 operatively connected to the first operation member 10 and a first elastic member disposed on the link member 15 and generating a biasing action toward the first operation member 10 side. 17, a lever member 18 that is supported by the tape cutter body 1 so as to be relatively displaceable, has a portion 18 a that can contact the first elastic member 17 and is operatively connected to the link member 15, and the lever member A second elastic member 19 for returning 18 to the original position; and the lever member 18 can be engaged and disengaged at a position where the portion 18a operates the lever member 18 so as to elastically displace the first elastic member 17. You may make it provide the latching | locking part 23 to latch.

  According to this configuration, the urging means is constituted by the link member 15, the first elastic member 17, the lever member 18, and the locking portion 23, and the return means is constituted by the link member 15, the lever member 18, and the second elastic member 19. Is configured. That is, since the first operating member 10 is engaged with the engaging portion 3 d of the first cutter blade member 3, the link member 15 is not displaced when the lever member 18 is operated, and the first on the link member 15 is not displaced. The elastic member 17 is elastically displaced. If it does so, it will be in the state (the urging | biasing suppression state of the 1st elastic member 17) which the 1st operation member 10 can be displaced to the said one direction T.

  When the cutting of the adhesive tape N is started from this state and applied to the cutting edge 3a of the first cutter blade member 3, the first cutter blade member 3 is displaced by the reaction force of the adhesive tape N as described above. Thus, the engagement between the first operating member 10 and the engaging portion 3d of the first cutter blade member 3 is released, and at this time, the biasing suppression state of the first elastic member 17 is released, and the first elastic member 17 The link member 15 is displaced by the elastic force. Then, the 1st operation member 10 connected with this is also displaced to the one direction T, and the non-adhesion part O is formed as mentioned above afterward.

  Thereafter, the locking of the lever member 18 by the locking portion 23 is released. At this time, the lever member 18 is returned to the original position by the second elastic member 19, and when the lever member 18 returns, Along with this, the link member 15 is displaced in the opposite direction, and accordingly, the first operating member 10 is also displaced in the opposite direction U and returned to the standby position. Further, when the first operating member 10 is restored, as described above, the second cutter blade member 4 is also returned to the original standby position by biasing and is aligned with the cutting edge 3a of the first cutter blade member 3, The system returns to the state before operating the lever member 18, and the adhesive tape N can be next cut.

  In this case, it is preferable that the locking portion 23 is configured so as to be freely retractable from the surface of the tape cutter body 1 so as to be pushed in with the displacement of the link member 15. According to this configuration, when the link member 15 is displaced by the elastic force of the first elastic member 17, the locking portion 23 is pushed in and the locking of the lever member 18 is automatically released. Operation is automated.

  As described above, according to the present invention, since the second cutter blade member is automatically folded when the adhesive tape is cut, a triangular non-adhesive portion can be easily formed. Further, by folding only the already cut portion of the adhesive tape in a state where the second cutter blade member is not completely cut, a triangular non-adhesive portion can be formed reliably.

  Hereinafter, an embodiment of a tape cutter with a folding function according to the present invention (hereinafter simply referred to as “tape cutter”) will be described with reference to the drawings.

  As shown in FIG. 1, the tape cutter according to the present embodiment is supported by a tape cutter body 1 having a holding portion 1a and a header portion 1b for holding a roll of adhesive tape N, and a tip of the header portion 1b. A cutter blade member 2 that can be relatively displaced with respect to the main body 1 in a direction P (more precisely, a surface direction opposite to the adhesive surface, hereinafter referred to as “direction of action”) perpendicular to the adhesive surface of the drawn adhesive tape N; Is provided.

  The cutter blade member 2 is configured integrally with a first cutter blade member 3 having a main blade edge 3 a and a first blade edge 3 a of the first cutter blade member 3 that is rotatably supported by the first cutter blade member 3. It is comprised with the 2nd cutter blade member 4 which has the subordinate blade edge 4a.

  The first cutter blade member 3 has one corner portion on the side of the horizontal rectangular blade edge (more precisely, the left corner as viewed from the adhesive surface side of the adhesive tape N). Part) is a plate-like body having a right trapezoidal shape cut out in a triangular shape, and the base end part is pivotally supported by the tip of the header part 1b via the pin shaft 5, and within a predetermined angle (about 5 degrees) range. It can be rotated.

  However, the first cutter blade member 3 is configured such that an urging sphere 6 (see FIG. 1) inserted at the distal end of the header portion 1b is in contact with the end surface on the base end portion side. The direction Q (the lower surface direction of the first cutter blade member 3 in FIG. 2, the front direction orthogonal to the paper surface in FIG. 2) opposite to the action direction P (the upper surface direction of the first cutter blade member 3 in FIG. 2). Direction, hereinafter referred to as “return direction”). The lower surface of the first cutter blade member 3 is an area in which the surface opposite to the adhesive surface of the adhesive tape N is in sliding contact. Therefore, the first cutter blade member 3 is always returned by the biasing force of the biasing ball 6. Although maintained at the position Q, when the adhesive tape N is cut with a cutter blade, the reaction force from the lifted adhesive tape N causes rotational displacement in the action direction P against the bias of the biasing ball 6. It is supposed to be.

  The second cutter blade member 4 is a plate-like body having a triangular shape corresponding to the notched region of the first cutter blade member 3, and the hypotenuse of the second cutter blade member 4 is formed in the hypotenuse portion of the first cutter blade member 3. They are also supported by hinges. Accordingly, the first cutter blade member 3 and the second cutter blade member 4 have a horizontal rectangular shape. Further, a torsion spring 7 is interposed in the hinge. As shown in FIG. 3, the second cutter blade member 4 is always in the direction R (the lower surface of the first cutter blade member 3 and the second cutter blade) by the torsion spring 7. The edge of the blade member 4 is urged in a direction in which the lower surface of the blade member 4 is flush with the lower surface of the blade member 4 (hereinafter referred to as “return direction”), and the blade edge is brought into contact with the stopper portion 3 b formed on the upper surface of the first cutter blade member 3. 4a is maintained at a position aligned with the cutting edge 3a of the first cutter blade member 3.

  However, as shown in FIG. 4, when it is pushed in the opposite direction S (hereinafter referred to as “operation direction”) against the bias of the torsion spring 7, it may be folded back so as to contact the lower surface of the first cutter blade member 3. it can. In addition, when the 2nd cutter blade member 4 is turned toward the lower surface of the 1st cutter blade member 3, as a buffer material for preventing both from contacting directly, the applicable location of the lower surface of the 1st cutter blade member 3 A sponge 8 is affixed to the surface (see FIG. 2).

  Returning to FIG. 1, the tape cutter according to the present embodiment is rotatably supported by the first operation member 10 supported by the header portion 1 b of the tape cutter body 1 and the first cutter blade member 3. And a second operation member 11 that is displaced in cooperation with the first operation member 10.

  As shown in FIGS. 3 and 4, the first operating member 10 is a flat aluminum member, and is housed in a horizontally long slit 1b 'formed at the tip of the header portion 1b. Then, when the pin shaft 12 fitted into the header portion 1 b so as to penetrate the slit 1 b ′ penetrates the middle portion of the first operation member 10, the first operation member 10 passes through the pin shaft 12. It is pivotally supported by the header part 1b.

More specifically, the first operation member 10 is rotatable along a plane parallel to the upper surface (lower surface) of the first cutter blade member 3, and the one-direction T in which the one end portion 10 a approaches the second cutter blade member 4 . (Hereinafter referred to as “direction of action”) and rotationally displaceable in the opposite direction U (hereinafter referred to as “return direction”) in which the one end portion 10a is separated from the second cutter blade member 4 .

  The second operation member 11 is a flat member made of aluminum, and one end portion 11 a is accommodated in a slit 3 c formed on the upper surface of the first cutter blade member 3. Then, when the pin shaft 13 inserted into the first cutter blade member 3 so as to penetrate the slit 3c penetrates the one end portion 11a of the second operation member 11, the second operation member 11 is connected to the pin shaft 13 Is pivotally supported by the first cutter blade member 3.

  More specifically, the second operation member 11 is rotatable along a surface perpendicular to the upper surface (lower surface) of the first cutter blade member 3, and the rotation shaft 13 is rotated by the second cutter blade member 4. The other end 11b is rotationally displaceable in the action direction S and the return direction R.

Further, the one end 10 a of the first operating member 10 is on the one end 11 a side of the second operating member 11, and comes into contact with a position separated from the rotation center 13. When displaced in the acting direction T, the second operating member 11 is pushed and the other end 11b rotates in the acting direction S. Moreover, the other end portion 11 b of the second operating member 11, because that is adapted to abut against the upper surface of the second cutter blade member 4, the other end portion 11b of the second operating member 11 is rotated in the direction of action S The second cutter blade member 4 is pushed against the urging force of the torsion spring 7, rotated in the action direction S and folded back.

  On the contrary, when the first operating member 10 is displaced in the return direction U, the state in which the second cutter member 4 is restrained from being biased by the second operating member 11 is released, and the second cutter blade member 4 rotates in the return direction R. The second operating member 11 is also pushed and rotated in the return direction R to return.

  Here, the first operating member 10 includes a concave engaged portion (engaging concave portion) 10c in the middle thereof, whereas the first cutter blade member 3 has a convex engaging portion on the upper surface thereof. (Engagement convex part) 3d is provided. The engaging portion 3d is engaged when the first cutter blade member 3 is in the return direction Q position and the first operation member 10 is also in the return direction U position (standby position) (state shown in FIG. 3). As long as the engaging portion 3d engages with the engaged portion 10c, the first operating member 10 (as a result, the second operating member 11 and the second operating member 11) are engaged. The cutter blade member 4) cannot be displaced.

  Conversely, when the first cutter blade member 3 is displaced in the action direction P, the engaging portion 3d is disengaged from the engaged portion 10c, so that the engagement between both is released, and the first operating member 10 (and thus the second operating member 10). The operating member 11 and the second cutter blade member 4) can be displaced. In this case, since the engaging portion 3d is positioned below the rotation range of the first operating member 10, the first operating member 10 is displaced in the action direction T over the engaging portion 3d. Will be.

  Returning to FIG. 1, the tape cutter according to the present embodiment is configured so that the first operating member 10 is biased so that the first operating member 10 is displaced in the acting direction T, and the first cutter 10 is displaced in the acting direction T. And a return means for displacing the first operating member 10 in the return direction U to return to the standby position.

  Specifically, the tape cutter according to this embodiment includes a link member 15 operatively connected to the first operation member 10, and is inserted through the link member 15, with respect to the link member 15 along the longitudinal direction. A slidable receiving member 16, a first elastic member 17 composed of a compression spring or the like for urging the receiving member 16 toward the first operating member 10, and a receiving member against the urging of the first elastic member 17 The lever member 18 for displacing 16 and the 2nd elastic member 19 which consists of a tension spring etc. for returning this lever member 18 to an original position are provided.

  The link member 15 is a long body having one end portion rotatably connected to the other end portion 10b of the first operation member 10 and having a shaft portion 15a at the other end portion. And the link member 15 is arrange | positioned between a pair of guide members 21 and 21 arrange | positioned with a fixed space | interval at the side surface of the header part 1b of the tape cutter main body 1, and it forms along this longitudinal direction in this link member 15. By fixing the screw 20 to the header portion 1b through the long hole, the link member 15 can be linearly displaced within a predetermined range along the direction in which the adhesive tape N is drawn.

  One end portion 18 a of the lever member 18, the receiving member 16, and the first elastic member 17 are inserted into the shaft portion 15 a of the link member 15 in the order of the distance from the first operating member 10. The receiving member 16 is a cylindrical body having a flange shape, and a part thereof is inserted into a hole formed in one end portion 18 a of the lever member 18.

  Further, the end portion of the shaft portion 15a of the link member 15 is an enormous portion, and the first elastic member 17 is interposed between the enormous portion and the receiving member 16 in a retaining state. Accordingly, if the one end portion 18a of the lever member 18 is displaced in a direction away from the first operation member 10 (hereinafter referred to as “operation direction”), the receiving member 16 is also displaced accordingly, and the first elastic member 17 is moved. Compress.

  The lever member 18 is rotatably supported by the tape cutter main body 1 with a screw 22 at the middle portion, and as described above, the one end portion 18 a engages with the receiving member 16, and the other end portion 18 b extends from the tape cutter main body 1. It is located in the holding part 1a.

  One end of the second elastic member 19 is locked to the header portion 1b (more precisely, the hook portion formed on the guide member 21), and the other end is one end portion 18a of the lever member 18, and the receiving member The one end 18a is biased so as to be displaced in a direction approaching the first operating member 10 (hereinafter referred to as “returning direction”). ing.

  Therefore, if the other end 18b of the lever member 18 is pulled from the state shown in FIG. 5, the one end 18a is displaced in the acting direction as shown in FIG. 6, and accordingly, the receiving member 16 is also displaced in the acting direction. The first elastic member 17 is compressed. The reason is that the elastic force of the first elastic member 17 causes a force in the acting direction to act on the expanding portion of the shaft portion 15a, the first elastic member 17 is not compressed, and the link member 15 is not displaced. The first operating member 10 cannot be displaced due to the engagement with the first cutter blade member 3 (the engaging portion 3d thereof), and therefore the link member 15 connected to the first operating member 10 cannot be displaced. Because it is.

  Furthermore, in order to maintain the state of FIG. 6, the tape cutter main body 1 is provided with the latching | locking part 23 shown in FIG. The engaging portion 23 is a protrusion configured to be able to move out and withdraw from the surface of the tape cutter body 1 and is normally urged to advance from the surface. The locking portion 23 includes an inclined surface 23a that gradually increases in the amount of protrusion from the first operating member 10 in a direction away from the first operating member 10, and a face 23b that hangs down from the inclined face 23a. By locking the portion 18a, the state of FIG. 6, that is, the one end portion 18a of the lever member 18 is maintained at the position in the action direction.

  Further, the locking portion 23 is displaced in the action direction T because the first operating member 10 is disengaged from the first cutter blade member 3 (the engaging portion 3d thereof) for the reason described later. When the member 15 is displaced in the acting direction by releasing the biased suppression state of the first elastic member 17 that remains compressed (the first operating member 10 to be connected is inevitably displaced in the acting direction T by this). ), And is gradually pressed against the lower surface of the link member 15 so as to be retracted from the surface of the tape cutter main body 1, so that the locking of the one end portion 18a of the lever member 18 by the locking portion 23 is released. It has become.

  Then, the biased restrained state of the second elastic member 19 that has been pulled is released, and the lever member 18 returns to the original position. At this time, since the locking portion 23 is located below the rotation range of the one end portion 18a of the lever member 18, the one end portion 18a of the lever member 18 is displaced and returned over the locking portion 23. Accordingly, the link member 15 is also pushed by the one end portion 18a of the lever member 18 and displaced in the return direction to return (the first operating member 10 to be connected is inevitably moved in the return direction U). Displaced).

  As can be seen from these, in the present embodiment, the urging means for urging the first operating member 10 so that the first operating member 10 is displaced in the acting direction T is the link member 15, the receiving member 16, The return means comprising the first elastic member 17, the lever member 18, and the locking portion 23 and displacing the first operating member 10 displaced in the action direction T in the return direction U and returning to the standby position is the link member 15. , Lever member 18 and second elastic member 19.

  The tape cutter according to the present embodiment has the above-described configuration. Next, when the adhesive tape N wound in a roll shape is pulled out and cut, only the corner portion of the cut end is folded to form a triangular non-adhesive portion. The operation to be formed will be described.

  First, when it is desired to fold back the corner of the cut end of the adhesive tape N to form a triangular non-adhesive portion, the lever member 18 is pulled prior to cutting the adhesive tape N drawn from the roll. Then, as shown in FIG. 8A, the cutter blade member 2 (the first cutter blade member 3 and the second cutter blade member 4), the first operation member 10, the second operation member 11, and the link member 15 are in the return direction. Although the cutter blade member 2 is maintained at the position (standby position) and the blade edge is maintained in a state where the blade edges are aligned, the first elastic member 17 is compressed and acting on the first operation member 10 and the link member 15. It is in a state that can be energized. However, since the 1st operation member 10 is engaging with the engaging part 3d of the 1st cutter blade member 3, it is not implement | achieved. Further, the second elastic member 19 is pulled and can be urged in the return direction with respect to the lever member 18, but this is not realized because the lever member 18 is locked to the locking portion 23.

  FIG. 2B is a view as seen from the adhesive surface side of the adhesive tape N, and the cutting of the adhesive tape N is started from the second cutter blade member 4 from this state. At this time, the second cutter blade member 4 is urged in the returning direction by the reaction force from the lifted adhesive tape N, but the other end of the stopper portion 3b of the first cutter blade member 3 or the second operation member 11. Since the contact with the portion 11b is received, the reaction force is absorbed and the posture is maintained, and the adhesive tape N can be cut.

  And when cutting | disconnection advances and it applies to the blade edge | tip 3a of the 1st cutter blade member 3, the 1st cutter blade member 3 acts against the biasing of the biasing ball 6 by the reaction force from the adhesive tape N lifted. Displace in the direction. Then, the engagement between the engagement portion 3d of the first cutter blade member 3 and the engaged portion 10c of the first operation member 10 is released, thereby releasing the bias suppression state of the first elastic member 17, Thereby, the link member 15 and the first operating member 10 are displaced in the acting direction. Then, as shown in FIGS. 9 (a) and 9 (b), the second operating member 11 is displaced in the direction of action due to the pressing operation accompanying the displacement of the first operating member 10, and the pressing operation accompanying the displacement of the second operating member 11 is performed. Due to the movement, the second cutter blade member 4 rotates in the direction of action and is folded back, so that the already cut portion of the adhesive tape N is also folded back to form the non-adhesive portion O.

  At this time, when the link member 15 is displaced in the acting direction, the locking portion 23 is pushed in from the surface of the tape cutter main body 1, whereby the locking of the lever member 18 is released. As a result, the biasing suppression state of the second elastic member 19 is released, and the lever member 18 is displaced in the return direction. Then, the link member 15 is displaced in the return direction by the pushing movement accompanying the displacement of the lever member 18, and the first operating member 10 is also displaced in the returning direction by the pushing action accompanying the displacement of the link member 15. Then, as shown in FIGS. 10A and 10B, the biased state of the torsion spring 7 is released, whereby the second cutter blade member 4 is displaced in the returning direction, and the second cutter blade member 4 is displaced. The second operating member 11 is also displaced in the return direction due to the pushing motion associated with the displacement of the movement, and the entire system returns to the state before the lever member 18 is pulled. Therefore, when the cutting of the adhesive tape N is completed, the next adhesive tape N can be cut. At that time, if the non-adhesive portion O is to be formed again, the lever member 18 may be pulled again.

  If it is not desired to form the non-adhesive portion O at the corner of the cut end, the lever member 18 may not be pulled. This is because if the lever member 18 is not pulled, the second operation member 11 cannot be displaced in the acting direction, and therefore the second cutter blade member 4 is not folded back.

  As described above, the tape cutter according to this embodiment simply pulls the lever member 18 and the second cutter blade member 4 is automatically folded when the adhesive tape is cut. Part O can be formed. And the non-adhesion part O can be reliably formed by folding only the already cut | disconnected part of the adhesive tape N in which the 2nd cutter blade member 4 is not cut completely. Furthermore, since the folding mechanism automatically returns to the original state during cutting of the adhesive tape N, it is only necessary to pull the lever member 18 and the operation is very easy. Further, if the adhesive tape N is cut without pulling the lever member 18, the non-adhesive part O is not formed, and therefore it is possible to easily switch whether or not the non-adhesive part O is formed.

  In addition, the tape cutter which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the above embodiment, the operation member is divided into the first operation member 10 and the second operation member 11, but only the first operation member 10 may be used. As a specific example, if a flexible portion is provided on one end side of the first operation member 10 and is in contact with the upper surface of the second cutter blade member 4, the direction of action of the first operation member 10 will be described. By this displacement, the flexible portion can turn the second cutter blade member 4 by rotating it in the acting direction.

  Moreover, in the said embodiment, although the holding | maintenance part 1a and the header part 1b which has a cutter blade are comprised integrally, you may make it respectively different. As a specific example, a main body having a space portion that can partially accommodate a roll of adhesive tape N and a header portion is configured, and a drum that holds the roll of adhesive tape N is disposed in the space portion of the main body. A tape cutter of the type often seen may be used.

  Moreover, in the said embodiment, although the 1st cutter blade member 3 and the 1st operation member 10 are rotationally displaced, it is not limited to this, For example, other displacement modes, such as a linear displacement, are employ | adopted. be able to.

  Moreover, in the said embodiment, although the pulling operation of the lever member 18 is performed artificially, you may make it operate a lever member automatically, for example, whenever an adhesive tape is cut | disconnected.

The external appearance perspective view of the tape cutter which concerns on this embodiment is shown. The back view of the cutter blade member which concerns on the embodiment is shown. It is an expansion perspective view of the folding | turning function part which concerns on the same embodiment, Comprising: The state before setting (neutral state) is shown. It is an expansion perspective view of the folding | turning function part which concerns on the same embodiment, Comprising: The effect | action state of a 2nd cutter blade member is shown. It is an expanded side view of the folding | turning function part which concerns on the same embodiment, Comprising: A state before setting (neutral state) is shown. It is an expanded side view of the folding | turning function part which concerns on the same embodiment, Comprising: A set state (standby state) is shown. It is a principal part enlarged side view of the biasing means which concerns on the same embodiment. It is explanatory drawing of the cutting | disconnection operation | movement using the tape cutter which concerns on the same embodiment, Comprising: The set state (standby state) of a lever member is shown. It is explanatory drawing of the cutting | disconnection operation | movement using the tape cutter which concerns on the same embodiment, Comprising: The effect | action state of a 2nd cutter blade member is shown. It is explanatory drawing of the cutting | disconnection operation | movement using the tape cutter which concerns on the same embodiment, Comprising: The state before setting of a lever member is shown. An explanatory view of a conventional tape cutter is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tape cutter main body, 1a ... Holding part, 1b ... Header part, 1b '... Slit, 2 ... Cutter blade member, 3 ... 1st cutter blade member, 3a ... Blade edge, 3b ... Stopper part, 3c ... Slit, 3d ... Engaging portion, 4 ... second cutter blade member, 4a ... blade edge, 5 ... pin shaft, 6 ... biasing ball, 7 ... torsion spring, 8 ... sponge (buffer material), 10 ... first operation member, 10a ... one end Part, 10b ... other end part, 10c ... engaged part (engagement recess), 11 ... second operation member, 11a ... one end part, 11b ... other end part, 12 ... pin shaft, 13 ... pin shaft, 15 ... Link member, 15a ... shaft, 16 ... receiving member, 17 ... first elastic member, 18 ... lever member, 18a ... one end, 18b ... other end, 19 ... second elastic member, 20 ... screw, 21 ... guide Member, 22 ... screw, 23 ... locking portion, 23a ... inclined surface, 23b ... facing, ... adhesive tape, O ... non-adhesive portion

Claims (4)

In a tape cutter with a folding function that folds only the corner of the cut end of the adhesive tape (N) to form a triangular non-adhesive part (O),
A tape cutter body (1) for holding a roll of adhesive tape (N);
A first cutter blade member (3) supported by the tape cutter body (1) and capable of relative displacement with respect to the tape cutter body (1) in a direction (P) perpendicular to the adhesive surface of the drawn adhesive tape (N). When,
The blade has a cutting edge (4a) that is rotatably supported by the first cutter blade member (3) and is configured integrally with the cutting edge (3a) of the first cutter blade member (3). The cutting edge (4a) The cutting edge (3a) of the first cutter blade member (3) from the position where it is brought into contact with the surface of the first cutter blade member (3) that is in sliding contact with the surface opposite to the adhesive surface of the adhesive tape (N) and turned back A second cutter blade member (4) biased in the direction (R) to rotate to a position aligned with
The tape cutter body (1) is supported so as to be relatively displaceable, and with the displacement in one direction (T), the second cutter blade member (4) turns only the corner of the cut end of the adhesive tape (N). In order to form a triangular non-adhesive portion (O), the adhesive tape (N) from the position where the blade edge (4a) of the second cutter blade member (4) is aligned with the blade edge (3a) of the first cutter blade member (3). ) In contact with the surface of the first cutter blade member (3) that is in sliding contact with the surface opposite to the adhesive surface of the first cutter blade member (4). A first operating member (10) that acts directly or indirectly against the bias in the direction (R) ,
Urging means for urging the first operating member (10) so that the first operating member (10) is displaced in the one direction (T);
Return means for displacing the first operating member (10) displaced in the one direction (T) in the opposite direction (U) and returning to the standby position;
The first cutter blade member (3) is engaged with the first operation member (10) so as to keep the first operation member (10) at the standby position against the urging force of the urging means. With a mating engagement portion (3d),
The engaging portion (3d) is configured to release the engagement with the first operating member (10) when the first cutter blade member (3) is displaced in the direction (P). Tape cutter with folding function.   The second cutter blade member (3) is rotatably supported by the first cutter blade member (3) and is pushed along with the displacement of the first operation member (10) in one direction (T). The tape cutter with a folding function according to claim 1, further comprising a second operation member (11) that rotates in a direction (S) that turns back against 4). A link member (15) operatively coupled to the first operating member (10);
A first elastic member (17) disposed on the link member (15) and generating a biasing action toward the first operating member (10);
A lever member having a portion (18a) that is supported by the tape cutter body (1) so as to be relatively displaceable and is operatively connected to the link member (15) so as to be in contact with the first elastic member (17). 18) and
A second elastic member (19) for returning the lever member (18) to its original position;
A locking portion (23) for releasably locking the lever member (18) at a position where the lever member (18) is operated so that the portion (18a) elastically displaces the first elastic member (17). The tape cutter with a folding function according to claim 1 or 2.   The tape with a turn-back function according to claim 3, wherein the locking portion (23) is configured to be retractable from the surface of the tape cutter body (1) so as to be pushed in with the displacement of the link member (15). cutter.

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