JP2012232462A - Tape cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape cassette which hardly causes the conveyance failure of a tape in printing operation while suppressing the burden of an operator in manufacturing.SOLUTION: When the lower projection of a tape feeding roller is inserted into the support hole 64B of a lower case 20, in manufacturing the tape cassette, movement in the peripheral direction of the tape feeding roller is regulated by three ribs (first rib 31, a second rib 32, and a third rib 33) formed at the peripheral edge of the support hole 64B. The first rib 31 is extended from a peripheral wall 22 to the peripheral edge of the support hole 64B. The second rib 32 is extended from a connection boss 23 to the peripheral edge of the support hole 64B. The third rib 33 is extended from a partition wall 29 to the peripheral edge of the support hole 64B.

Description

  The present invention relates to a tape cassette used in a tape printer.

  Conventionally, a tape cassette is known in which a tape feeding roller for transporting a tape accommodated in a cassette case is rotatably supported by a pair of upper and lower support holes formed in an upper case and a lower case (for example, Patent Document 1). The tape feeding roller includes a cylindrical portion having a roller surface for guiding the tape, and a pair of protruding portions that protrude from the cylindrical portion in the axial direction and are supported by the support holes. A plurality of drive ribs that are engaged with the tape drive cam of the tape printer are formed inside the cylindrical portion. The lower protruding portion is formed by the lower end portion of each driving rib protruding from the inside of the cylindrical portion.

Japanese Patent Laid-Open No. 7-314831

  At the time of manufacturing the tape cassette as described above, an operator attaches the lower protrusion in the support hole of the lower case, and then assembles the upper case to the lower case. However, if the worker is not skilled, the lower protrusion cannot be properly accommodated in the support hole, and a part of the plurality of drive ribs may run around the support hole of the lower case. If the upper case is assembled to the lower case in this state, it may cause rotation failure of the tape feed roller, which may result in tape conveyance failure. Therefore, conventionally, it is necessary to provide a process for inspecting the rotation failure of the tape feed roller after the above assembly, which may increase the burden on the operator.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tape cassette that is less likely to cause poor transport of a tape during a printing operation while suppressing the burden on an operator during manufacture. .

  A tape cassette according to an aspect of the present invention includes a box-like cassette case including an upper case having an upper wall, and a lower case having a bottom wall and a peripheral wall extending from a peripheral edge of the bottom wall toward the upper case; A first tape having a printing surface on which a character is printed, and a tape that conveys the first tape along a first path between the upper wall and the bottom wall, which is stored inside the cassette case. The tape feed roller has a cylindrical shape having an axial direction parallel to the vertical direction in which the upper wall and the bottom wall face each other, and has a roller surface that is a circumferential surface for guiding the first tape. A cylindrical portion rotatable between the upper wall and the bottom wall, a first projecting portion projecting upward from the cylindrical portion, which is one end side in the axial direction, and the inside of the cylindrical portion. The tape feeding row extends in the axial direction. A shaft hole into which a shaft body for rotationally driving is inserted, and a protrusion that extends from the inside of the shaft hole to the lower side, which is the other end side in the axial direction, and engages with the shaft body to be inserted into the shaft hole. An engaging portion; and a second protruding portion that is a part of the engaging portion and protrudes downward from the cylindrical portion, and the upper case is a hole formed in the upper wall. A first support hole for supporting the first protrusion inserted from the lower side to rotate around the axis, a position adjacent to the first support hole, and spaced from the first path. Provided at a position, extending from the upper wall to the lower side and connected to the lower case, and the lower case is provided at a position close to the peripheral wall of the bottom wall, A hole facing the first support hole, the second protrusion inserted from the upper side around the axis A second support hole to be supported for rolling, and a connection hole provided at a position adjacent to the second support hole and at a position spaced apart from the first path and to which the distal end side of the extending portion is fixed. A first standing portion extending upward from the bottom wall and connected to the extending portion; a position adjacent to the second support hole; and a position close to the first path; And a second standing portion extending upward from the bottom wall to the upper surface of the bottom wall. A first rib extending from the peripheral wall to the peripheral edge of the second support hole, and a second rib provided on the upper surface of the bottom wall and extending from the first standing portion to the peripheral edge of the second support hole. A rib and a second support provided on the upper surface of the bottom wall from the second standing portion; And a third rib extending to the periphery of the hole.

  The tape cassette includes a box-shaped cassette case, a first tape having a printing surface, and a tape feed roller for conveying the first tape. The tape feed roller includes a cylindrical portion having a roller surface, and a first protruding portion and a second protruding portion that protrude upward and downward from the cylindrical portion. An engagement portion that engages with the shaft body is provided in the shaft hole of the cylindrical portion. A 2nd protrusion part is a part of engaging part which protrudes below a cylindrical part. The upper case includes a first support hole that rotatably supports the first protrusion, and an extending portion that is coupled to the lower case. The lower case includes a second support hole that rotatably supports the second projecting portion, a first standing portion that is connected to the extending portion, and a second standing portion that restricts movement of the first tape in the vertical direction. With. On the upper surface of the bottom wall, a first rib extending from the peripheral wall of the lower case to the periphery of the second support hole, a second rib extending from the first standing portion to the periphery of the second support hole, and a second stand And a third rib extending from the portion to the periphery of the second support hole.

  According to this, at the time of manufacturing the tape cassette, when the second protrusion is inserted into the second support hole, the tape is formed by the three ribs (first to third ribs) formed on the peripheral edge of the second support hole. Movement of the feed roller (specifically, the cylindrical portion) in the circumferential direction is restricted. Thereby, since the 2nd protrusion part is guided below to the 2nd support hole, the operation | work which attaches a tape feed roller to a lower case becomes easy. In the state where the second protrusion is inserted into the second support hole, the posture of the tape feed roller is stabilized by the three ribs. Therefore, it is easy to insert the first protrusion into the first support hole when the upper case is assembled to the lower case after the tape feed roller is attached to the lower case. Therefore, the burden on the operator at the time of manufacturing the tape cassette can be greatly suppressed.

  When the tape feed roller is attached, the second protrusion is accurately inserted into the second support hole by the three ribs, so that the second protrusion is prevented from running around the second support hole of the lower case. Further, since the posture of the tape feeding roller is stabilized by the three ribs, the first protrusion is also accurately inserted into the first support hole when the upper case is assembled to the lower case. Thereby, the rotation failure of a tape feed roller is suppressed, and by extension, the conveyance failure of a tape can be suppressed.

  The second support hole of the lower case is provided at a position adjacent to any of the three wall portions (the peripheral wall, the first standing portion, and the second standing portion) extending upward from the bottom wall. The peripheral wall forms the side surface of the tape cassette. The first standing portion is connected to the extending portion and fixes the upper case to the lower case. The second standing portion regulates vertical movement of the first tape conveyed toward the roller surface. The three ribs extend from the three walls having these unique functions to the periphery of the second support hole.

  As described above, the three ribs can be provided in a narrow space at the peripheral edge of the second support hole by continuously providing the three ribs on the wall portion standing on the peripheral edge of the second support hole. Furthermore, since each rib is provided in a different wall part, each rib can be provided in a different radially outward direction of the second support hole. As a result, the outer peripheral side of the tape feed roller (specifically, the cylindrical portion) can be surrounded by three ribs from different directions, and the posture of the tape feed roller can be further stabilized. Furthermore, the physical strength of each rib can be improved by connecting each rib to the wall.

1 is an external perspective view of a laminate type tape cassette 1. FIG. FIG. 2 is a plan view of the tape cassette 1 shown in FIG. 1 with an upper case removed. 4 is a bottom view of the upper case 10. FIG. 4 is a plan view of the lower case 20. FIG. It is a front view which shows the tape feed roller 46 in a partial cross section. FIG. 4 is an enlarged perspective view of the periphery of a roller storage portion 24 of the lower case 20. FIG. 4 is an enlarged perspective view of the periphery of a roller storage portion 24 of the lower case 20. It is a top view of the receptor type tape cassette 1 which removed the upper case.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. Note that the drawings to be referred to are used for explaining the technical features that can be adopted by the present invention, and the configuration of the described apparatus is not intended to be limited thereto, but is merely an illustrative example. is there.

  The tape cassette 1 according to the present embodiment will be described with reference to FIGS. In the description of this embodiment, the front side, back side, left side, and right side of FIG. 1 are the front side, rear side, left side, and right side of the tape cassette 1, respectively. A direction in which an upper wall 11 and a bottom wall 21 which will be described later face each other is a vertical direction of the tape cassette 1. Below, the tape cassette 1 which mounted the general purpose cassette which can be mounted in various tape types in the laminate type is illustrated.

  The overall structure of the tape cassette 1 will be described with reference to FIGS. As shown in FIGS. 1 and 2, the tape cassette 1 has a cassette case 2 which is a substantially rectangular parallelepiped (box-shaped) housing. The cassette case 2 includes a lower case 20 and an upper case 10 that is assembled to the lower case 20 from above.

  As shown in FIG. 3, the upper case 10 includes an upper wall 11 that is a wall portion that forms the upper surface of the tape cassette 1, and a peripheral wall 12 that is a wall portion that extends downward from the periphery of the upper wall 11. The upper case 10 is provided with a support hole 64A, a cylinder receiving portion 65A, a bearing portion 66A, a bearing portion 67A, a support hole 68A, a plate-like body 36A and the like which will be described later.

  As shown in FIG. 4, the lower case 20 includes a bottom wall 21 that is a wall portion that forms the bottom surface of the tape cassette 1, and a peripheral wall 22 that extends upward from the periphery of the bottom wall 21. The lower case 20 is provided with a support hole 64B, a cylindrical body 65B, a shaft portion 66B, a shaft portion 67B, a support hole 68B, a plate-like body 36B, a guide wall 47, an isolation wall 29 and the like which will be described later. The peripheral wall 12 and the peripheral wall 22 form the side surface of the tape cassette 1.

  As shown in FIGS. 2 to 4, a double-sided adhesive tape 58, a transparent film tape 59, and an ink ribbon 60 are accommodated in the cassette case 2. The double-sided pressure-sensitive adhesive tape 58 is a double-sided tape having a release paper attached on one side, and is attached to the printing surface of the printed film tape 59. The double-sided adhesive tape 58 is wound around the first tape spool 40 with the release paper facing outward (that is, with the adhesive surface bonded to the printing surface facing inward). The film tape 59 is wound around the second tape spool 41. The ink ribbon 60 is wound around the ribbon spool 42. The double-sided pressure-sensitive adhesive tape 58, the film tape 59, and the ink ribbon 60 are transported on their transport paths so that their width directions are parallel to the vertical direction of the cassette case 2.

  The double-sided adhesive tape 58 is stored in the first tape storage part 25 (see FIGS. 3 and 4) provided at the left rear part (the upper left part in FIG. 2) in the cassette case 2. In the first tape storage unit 25, the first tape spool 40 around which the double-sided adhesive tape 58 is wound is rotatably supported by the support unit 65. The support portion 65 includes a cylindrical body 65B (see FIG. 4) extending upward from the bottom wall 21, and a cylinder receiving portion 65A (see FIG. 3) provided on the upper wall 11 and connected to the tip of the cylindrical body 65B. including. The first tape spool 40 is rotatably supported in a state in which the cylindrical body 65B connected to the cylinder receiving portion 65A is inserted into the shaft hole of the first tape spool 40.

  The film tape 59 is stored in a second tape storage portion 26 provided at the right rear portion (upper right portion in FIG. 2) in the cassette case 2. In the second tape storage portion 26, the second tape spool 41 around which the film tape 59 is wound is rotatably supported by the support portion 66. The support portion 66 includes a shaft portion 66B (see FIG. 4) extending upward from the bottom wall 21 and a bearing portion 66A (see FIG. 3) provided on the upper wall 11 and connected to the tip of the shaft portion 66B. The second tape spool 41 is rotationally supported in a state in which the shaft portion 66B connected to the bearing portion 66A is inserted into the shaft hole of the second tape spool 41.

  The ink ribbon 60 is stored in an ink ribbon storage portion 27 provided at the right front portion (lower right portion in FIG. 2) in the cassette case 2. In the ink ribbon storage unit 27, the ribbon spool 42 around which the ink ribbon 60 is wound is supported rotatably by the support unit 67. The support part 67 includes a shaft part 67B (see FIG. 4) extending upward from the bottom wall 21 and a bearing part 67A (see FIG. 3) provided on the upper wall 11 and connected to the tip of the shaft part 67B. The ribbon spool 42 is rotationally supported in a state in which the shaft portion 67B connected to the bearing portion 67A is inserted into the shaft hole of the ribbon spool 42.

  The tape feed roller 46 is disposed in the roller storage portion 24 provided at the left front corner (lower left corner in FIG. 2) of the cassette case 2. The tape feed roller 46 is a rotating body for pulling out the film tape 59 and the double-sided adhesive tape 58. In the roller storage unit 24, the tape feeding roller 46 is rotatably supported by the support unit 64. The support part 64 includes a pair of support holes 64A and 64B (see FIGS. 3 and 4) penetrating the top wall 11 and the bottom wall 21 in the vertical direction. The tape feed roller 46 can rotate around the axis in a state where both upper and lower ends (the upper projecting portion 101 and the lower projecting portion 102 described later) of the tape feed roller 46 are inserted into the support holes 64A and 64B.

  As shown in FIG. 5, the tape feeding roller 46 includes a cylindrical portion 100, an upper protruding portion 101, a lower protruding portion 102, a shaft hole 103, and an engaging portion 104. The cylindrical portion 100 is a cylindrical body having an axial direction parallel to the vertical direction of the tape cassette 1. The peripheral surface of the cylindrical portion 100 is a roller surface 100A that guides the tape (in this embodiment, the double-sided adhesive tape 58 and the film tape 59). The upper protruding portion 101 is a cylindrical body that protrudes upward from the cylindrical portion 100 and has a smaller diameter than the cylindrical portion 100. The lower protrusions 102 are a plurality of protrusions that protrude downward from the cylindrical part 100 and are arranged radially in plan view.

  The cylindrical portion 100 has a shaft hole 103 that penetrates the inside thereof in the vertical direction. On the inner peripheral surface of the shaft hole 103, there are provided engaging portions 104 each having a plurality of protrusions extending downward from a substantially intermediate position in the vertical direction of the shaft hole 103. Each protrusion of the engaging portion 104 is continuously provided from within the shaft hole 103 so as to protrude below the tubular portion 100. The above-described lower protruding portion 102 is a portion of the engaging portion 104 that protrudes below the cylindrical portion 100.

  When the tape cassette 1 is attached to the tape printer (not shown), the tape drive shaft (not shown) is inserted into the shaft hole 103, and the connecting blades (not shown) provided on the peripheral surface of the tape drive shaft are inserted. Engage with the engaging portion 104. Thereby, the tape feed roller 46 is rotated via the engaging portion 104 with the rotation of the tape drive shaft. Specifically, the cylindrical portion 100 rotates between the upper wall 11 and the bottom wall 21, and the tape is guided by the roller surface 100A.

  As shown in FIGS. 2 to 4, the ribbon take-up spool 44 is attached to the spool storage portion 28 provided in the first tape storage portion 25, the second tape storage portion 26, and the ink ribbon storage portion 27 of the cassette case 2. Be placed. The ribbon take-up spool 44 is a rotating body for drawing out the unused ink ribbon 60 and taking up the used ink ribbon 60. In the spool storage portion 28, the ribbon take-up spool 44 is rotatably supported by the support portion 68. The support portion 68 includes a pair of support holes 68A and 68B (see FIGS. 3 and 4) penetrating the top wall 11 and the bottom wall 21 in the vertical direction. With the upper and lower ends of the ribbon take-up spool 44 inserted into the support holes 68A and 68B, the ribbon take-up spool 44 can rotate about the axis.

  The upper case 10 and the lower case 20 are connected to a pair of connecting members that are opposed to each other vertically (for example, a connecting pin of the upper case 10 and a connecting boss of the lower case 20 to which the tip of the protruding pin is fixed). Are provided. In the cassette case 2, the upper case 10 and the lower case 20 are integrally fixed by these connecting members.

  When the tape cassette 1 is mounted on the tape printer (not shown) and the printing operation is executed, the tape feed roller 46 is rotationally driven via the tape drive shaft (not shown) of the tape printer. The tape feed roller 46 pulls out the film tape 59 from the second tape spool 41 and pulls out the double-sided adhesive tape 58 from the first tape spool 40 in cooperation with a movable conveyance roller (not shown) of the tape printer. A ribbon take-up spool 44 that is rotationally driven via a ribbon take-up shaft (not shown) of the tape printer draws the ink ribbon 60 from the ribbon spool 42 in synchronization with the print speed.

  The second tape spool 41 rotates clockwise in plan view as the film tape 59 is pulled out. The film tape 59 pulled out from the second tape spool 41 is conveyed toward the right front corner of the cassette case 2 (lower right corner in FIG. 2). At the right front corner of the cassette case 2, the film tape 59 is conveyed along the outer periphery of the ink ribbon 60 wound around the ribbon spool 42 and at a distance from the ink ribbon 60.

  The ribbon spool 42 rotates counterclockwise in plan view as the ink ribbon 60 is pulled out. The ink ribbon 60 pulled out from the ribbon spool 42 is conveyed toward the left front corner (the lower left corner in FIG. 2) of the cassette case 2. Similarly, the first tape spool 40 rotates counterclockwise in plan view as the double-sided adhesive tape 58 is pulled out. The double-sided adhesive tape 58 pulled out from the first tape spool 40 is conveyed toward the left front corner of the cassette case 2.

  Inside the arm portion 34 extending to the left from the right front portion of the tape cassette 1, the film tape 59 drawn from the second tape spool 41 and the ink ribbon 60 drawn from the ribbon spool 42 are guided together. In the opening 35 formed on the distal end side of the arm portion 34, the film tape 59 and the ink ribbon 60 passing through the arm portion 34 are overlaid. The film tape 59 and the ink ribbon 60 are discharged toward the opening 77 provided on the front side of the tape cassette 1 through the opening 35.

  A head insertion portion 39 is provided on the front side of the cassette case 2 and on the left side of the ink ribbon storage portion 27. The head insertion part 39 is a part into which a thermal head (not shown) of the tape printer is inserted. The head insertion portion 39 is connected to the outside on the front side of the tape cassette 1 through the opening 77. The film tape 59 discharged to the opening 77 is printed by a thermal head (not shown) using the ink ribbon 60 superimposed on the film tape 59.

  A regulating member 36 is provided at the front of the cassette case 2 adjacent to the left side of the opening 77. The restricting member 36 includes a plate-like body 36A that extends downward from the upper wall 11 and a plate-like body 36B that faces the plate-like body 36A and extends upward from the bottom wall 21. The restricting member 36 guides the printed film tape 59 and the used ink ribbon 60 toward the left front corner of the cassette case 2.

  The printed film tape 59 is conveyed to the left along the tape feed roller 46 via the regulating member 36. The double-sided adhesive tape 58 drawn out from the first tape spool 40 is guided and wound between the tape feeding roller 46 and the movable conveying roller (not shown). At this time, the double-sided pressure-sensitive adhesive tape 58 is laminated and stuck on the printing surface of the printed film tape 59. More specifically, the tape feeding roller 46 has a double-sided pressure-sensitive adhesive tape 58 between the upper wall 11 and the bottom wall 21 along a path passing through the outer peripheral side of the support holes 64A and 64B. After the sheet 100 is conveyed so as to face the outside of the portion 100 (FIG. 5), the adhesive surface of the double-sided adhesive tape 58 is bonded to the printing surface of the film tape 59 with the roller surface 100A.

  The printed film tape 59 (that is, the printed tape 50) to which the double-sided adhesive tape 58 is attached is further conveyed toward the tape discharge port 49 and cut by a cutting mechanism (not shown) of the tape printer. . On the other hand, the ink ribbon 60 used for printing by a thermal head (not shown) is separated from the film tape 59 by a guide wall 47 erected on the right side of the tape feed roller 46. Further, the used ink ribbon 60 is conveyed to the right side behind the head insertion portion 39 and then taken up by the ribbon take-up spool 44. The used ink ribbon 60 wound along the guide wall 47 and the double-sided adhesive tape 58 drawn out toward the tape feed roller 46 come into contact between the guide wall 47 and the tape feed roller 46. An isolation wall 29 is provided to prevent this.

  With reference to FIGS. 3-7, the physical structure of the roller accommodating part 24 in the cassette case 2 is demonstrated. As shown in FIGS. 4, 6, and 7, the above-described support hole 64 </ b> B is formed in the roller storage portion 24 of the lower case 20. The support hole 64B is a hole formed in the vicinity of the left peripheral wall 22 so as to cut out the bottom wall 21 in a substantially circular shape from the front. When the lower protrusion 102 is inserted into the support hole 64B from above, the lower side of the cylindrical part 100 is supported by the peripheral edge of the support hole 64B, and the circumferential direction of the lower protrusion 102 inserted into the support hole 64B Movement to is regulated. That is, the support hole 64B supports the lower protruding portion 102 (and thus the tubular portion 100) so as to rotate around the axis.

  A connecting boss 23 extending upward from the bottom wall 21 is provided as one of the connecting members described above on the rear side adjacent to the support hole 64B. The connection boss 23 has a connection hole into which a connection pin 13 (see FIG. 3) described later is inserted and fixed. The connecting boss 23 is separated to the left from the conveyance path of the double-sided adhesive tape 58 so as not to interfere with the double-sided adhesive tape 58 conveyed from the first tape storage portion 25 toward the tape feed roller 46 (see FIG. 5). Yes.

  An isolation wall 29 extending upward from the bottom wall 21 is provided between the guide wall 47 and the support hole 64B. The isolation wall 29 is a wall that curves along the right contour of the support hole 64 </ b> B in a plan view, and includes a regulation part 70 and an adhesion preventing part 80. The restricting portion 70 restricts the movement of the film tape 59 conveyed toward the roller surface 100A (see FIG. 5) in the width direction (that is, the vertical direction). The sticking prevention unit 80 prevents the adhesive surface of the double-sided adhesive tape 58 from sticking to the isolation wall 29.

  The restricting portion 70 is provided at a position adjacent to the support hole 64B and close to the transport path of the film tape 59, and an upper restricting portion 71 and a lower portion projecting forward from both upper and lower ends at the front end portion of the separating wall 29. A restricting portion 72 is provided. A connecting pin 73 for fixing the isolation wall 29 to the upper case 10 protrudes upward from the upper restricting portion 71.

  The upper restricting portion 71 comes into contact with the upper end of the film tape 59 conveyed on the rear side of the plate-like body 36A and restricts the film tape 59 from moving upward. The lower restricting portion 72 contacts the lower end of the film tape 59 conveyed on the rear side of the plate-like body 36 </ b> B, and restricts the film tape 59 from moving downward. Thereby, the film tape 59 is guided toward the roller surface 100A in a state defined at an appropriate position in the width direction.

  The sticking prevention part 80 is a concavo-convex part provided on the surface of the isolation wall 29 facing the support hole 64B (that is, the surface facing the adhesive surface of the double-sided adhesive tape 58). In the sticking prevention unit 80, a plurality of concavities and convexities extending from the bottom wall 21 toward the upper side and extending along the wall surface of the isolation wall 29 are provided continuously along the curved shape of the isolation wall 29. The uneven shape of the sticking prevention unit 80 prevents sticking of the adhesive surface of the double-sided adhesive tape 58, and the double-sided adhesive tape 58 is smoothly conveyed.

  A roller support portion 91 and a guide portion 92 are provided on the upper surface of the bottom wall 21 along the periphery of the support hole 64B. The roller support portion 91 supports the cylindrical portion 100 (see FIG. 5) from the lower side in a state where the lower protrusion portion 102 (see FIG. 5) is inserted into the support hole 64B. The roller support portion 91 protrudes upward from the bottom wall 21 to the same height position (position in the vertical direction) as the protruding end (upper end) of the lower restriction portion 72. Therefore, each lower end position of the film tape 59 conveyed from the regulation part 70 substantially coincides with the lower end position of the roller surface 100A.

  The roller support portion 91 of the present embodiment includes roller support portions 91A and 91B provided at two locations on the periphery of the support hole 64B. The roller support portion 91A has a protruding shape extending in the clockwise direction in plan view from the left front edge portion to the right rear edge portion (in FIG. 4, the lower left portion to the upper right portion of the support hole 64B) of the support hole 64B. That is, the roller support portion 91A is provided at a position that does not face the isolation wall 29 at the periphery of the support hole 64B. The roller support portion 91B has a protruding shape extending rightward from the right edge portion of the support hole 64B (see FIG. 6). That is, the roller support portion 91B is provided at a position facing the isolation wall 29 at the periphery of the support hole 64B.

  The roller support portion 91 </ b> B straddles the conveyance path of the double-sided adhesive tape 58 formed between the tubular portion 100 and the isolation wall 29. Therefore, the roller support portion 91B not only supports the cylindrical portion 100 from the lower side, but also contacts the lower end of the double-sided adhesive tape 58 to be conveyed and restricts the double-sided adhesive tape 58 from moving downward. . Thereby, the double-sided adhesive tape 58 is guided toward the roller surface 100A in a state defined at a proper position in the width direction.

  The guide part 92 guides the lower protrusion part 102 toward the support hole 64B when the tape feeding roller 46 is inserted from above. The guide portion 92 is an inclined surface that is provided below the roller support portion 91 and is inclined downward toward the support hole 64B. The guide part 92 of this embodiment has guide parts 92A and 92B provided at two places on the periphery of the support hole 64B. The guide portions 92A and 92B are surface portions provided at the right rear edge portion and the right front edge portion of the support hole 64B. That is, the guide portions 92A and 92B are provided at the positions facing the isolation wall 29 at the periphery of the support hole 64B with the roller support portion 91B interposed therebetween.

  Furthermore, three ribs (first rib 31, second rib 32, and third rib 33) that extend from different directions to the periphery of the support hole 64B are provided on the upper surface of the bottom wall 21. The first rib 31 extends from the left peripheral wall 22 to the left edge portion of the support hole 64B (specifically, the left edge portion of the roller support portion 91A). The second rib 32 extends from the connection boss 23 to the rear edge portion of the support hole 64B (specifically, the rear edge portion of the roller support portion 91A). The third rib 33 extends from the isolation wall 29 to the right edge of the support hole 64B (specifically, the right edge of the guide portions 92A and 92B).

  In this embodiment, the site | part (specifically site | part connected with the surrounding wall 22) where the height of the 1st rib 31 is the maximum is extended to the upper side to the substantially middle position of the up-down direction of the surrounding wall 22. FIG. The first rib 31 has a plate shape inclined downward toward the support hole 64B so that the height decreases from the peripheral wall 22 toward the support hole 64B. Moreover, the site | part (specifically site | part connected with the connection boss | hub 23) where the height of the 2nd rib 32 is the maximum is extended to the substantially middle position of the up-down direction of the surrounding wall 22. As shown in FIG. The second rib 32 has a plate shape inclined downward toward the support hole 64B so that the height decreases from the connection boss 23 toward the support hole 64B.

  Further, the base portion connected to the bottom wall 21 in the sticking prevention portion 80 has the largest unevenness (that is, the protrusion width of the protrusion with respect to the wall surface of the isolation wall 29), and each protrusion is supported. It protrudes to the right edge of the hole 64B. Thus, the convex part (lower end convex part) with a large protrusion width provided at the base part of the sticking prevention part 80 is the third rib 33 described above. The lower end side of the double-sided adhesive tape 58 is conveyed between the third rib 33 and the roller surface 100A. In addition, as for the some lower end convex part which comprises the 3rd rib 33, each upper end side inclines toward the support hole 64B.

  As shown in FIG. 3, the previously described support hole 64 </ b> A is formed in the roller storage portion 24 of the upper case 10. The support hole 64A is a hole formed in the vicinity of the left peripheral wall 12 that penetrates the upper wall 11 in the vertical direction. When the upper projecting portion 101 is inserted into the support hole 64A from the lower side, the upper side of the cylindrical portion 100 is supported by the peripheral edge of the support hole 64A, and the periphery of the upper projecting portion 101 inserted into the support hole 64A. Movement in the direction is restricted. That is, the support hole 64A supports the upper protruding portion 101 (and thus the tubular portion 100) so as to rotate around the axis.

  A connecting pin 13 extending downward from the upper wall 11 is provided as one of the connecting members described above on the rear side adjacent to the support hole 64A. On the right side of the support hole 64A, a connecting groove 18 formed in a shape corresponding to the isolation wall 29 in plan view is formed. A small-diameter pin hole 19 corresponding to the above-described connection pin 73 is formed on the front side of the connection groove 18.

  The manufacturing process of the tape cassette 1 will be described with reference to FIGS. First, as shown in FIGS. 2 and 3, the worker arranges various members in the inner region of the lower case 20 (the region surrounded by the upper surface of the bottom wall 21 and the inner surface of the peripheral wall 22). . Specifically, the double-sided adhesive tape 58 is disposed in the first tape storage unit 25 so that the cylindrical body 65B is inserted into the shaft hole of the first tape spool 40. The film tape 59 is disposed in the second tape storage portion 26 so that the shaft portion 66B is inserted into the shaft hole of the second tape spool 41. The ink ribbon 60 is disposed in the ink ribbon storage portion 27 so that the shaft portion 67B is inserted into the shaft hole of the ribbon spool. The ribbon take-up spool 44 is attached to the spool housing portion 28 so that the lower end of the ribbon take-up spool 44 is inserted into the support hole 68B.

  As shown in FIGS. 5 to 7, when the tape feed roller 46 is attached to the roller accommodating portion 24, the tape feed roller 46 is disposed from the upper side of the support hole 64 </ b> B. At this time, the movement of the cylindrical portion 100 in the circumferential direction is restricted by three ribs (the first rib 31, the second rib 32, and the third rib 33) that respectively surround the roller surface 100A from different directions, and project downward. The part 102 is guided downward to the support hole 64B. The first rib 31, the second rib 32, and the third rib 33 are all inclined downward toward the support hole 64B, so that the lower protruding portion 102 is restrained from being caught by each rib, and the tape feed roller 46 can be arranged smoothly.

  However, when the axial direction of the cylindrical portion 100 is inclined from the vertical direction of the tape cassette 1, the lower protruding portion 102 may ride on the upper surface in the vicinity of the support hole 64B. In the present embodiment, the first rib 31 and the second rib 32 extend to the vicinity of the support hole 64 </ b> B rather than the third rib 33 that sandwiches the conveyance path of the double-sided adhesive tape 58. Therefore, it is relatively difficult for the lower protrusion 102 to ride on the left edge of the support hole 64B where the first rib 31 and the second rib 32 are provided. On the other hand, it is relatively easy for the lower protrusion 102 to ride on the right edge of the support hole 64B in which the third rib 33 is provided.

  However, guide portions 92A and 92B are provided on the right edge of the support hole 64B. When the lower protrusion 102 rides on the right edge of the support hole 64B, the lower protrusion 102 is guided downward along the guide portions 92A and 92B and inserted into the support hole 64B. When the lower protruding portion 102 is inserted into the support hole 64B, the axial direction of the cylindrical portion 100 is set to the vertical direction of the tape cassette 1 by the three ribs (first rib 31, second rib 32, and third rib 33). The tape feed roller 46 is held in an appropriate posture that is parallel.

  Next, as shown in FIG. 2, the upper case 10 shown in FIG. 3 is assembled from the upper side to the lower case 20 on which various members are arranged. Thereby, the upper case 10 is integrally fixed to the lower case 20 by the connecting member described above. The tip of the cylindrical body 65B is connected to the cylinder receiving portion 65A, and the first tape spool 40 is rotatably supported by the support portion 65. The tip end of the shaft portion 66B is connected to the bearing portion 66A, and the second tape spool 41 is rotatably supported by the support portion 66. The tip end of the shaft portion 67B is coupled to the bearing portion 67A, and the ribbon spool 42 is rotationally supported by the support portion 67. The upper end of the ribbon take-up spool 44 is inserted into the support hole 68 </ b> A, and the ribbon take-up spool 44 is rotationally supported by the support portion 68.

  As shown in FIGS. 5 to 7, the connection pin 13 is inserted and fixed in the connection hole of the connection boss 23 around the roller storage portion 24. The upper end portion of the isolation wall 29 is fitted into the connecting groove 18, and the connecting pin 73 is inserted and fixed in the pin hole 19. Further, the upper protruding portion 101 of the tape feed roller 46 is inserted into the support hole 64 </ b> A, and the tape feed roller 46 is rotationally supported by the support portion 64. When the upper case 10 is assembled, the tape feeding roller 46 is held in an appropriate posture, so that the upper protruding portion 101 is accurately fitted into the support hole 64A.

  As described above, according to the tape cassette 1 of the present embodiment, when the lower protrusion 102 is inserted into the support hole 64B at the time of manufacture, the three ribs (first rib 31) formed on the periphery of the support hole 64B. The second rib 32 and the third rib 33) restrict the circumferential movement of the tape feed roller 46 (specifically, the cylindrical portion 100). Thereby, since the lower protrusion part 102 is guided below to the support hole 64B, the operation | work which attaches the tape feed roller 46 to the lower case 20 becomes easy. In the state where the lower protrusion 102 is inserted into the support hole 64B, the posture of the tape feed roller 46 is stabilized by the three ribs. Therefore, when the upper case 10 is assembled to the lower case 20 after the tape feed roller 46 is attached to the lower case 20, the upper protruding portion 101 can be easily inserted into the support hole 64A. Therefore, the burden on the operator when manufacturing the tape cassette 1 can be greatly suppressed.

  When the tape feed roller 46 is attached, the lower protrusion 102 is accurately inserted into the support hole 64B by the three ribs, so that the lower protrusion 102 is prevented from climbing around the support hole 64B. Further, since the posture of the tape feed roller 46 is stabilized by the three ribs, the upper protruding portion 101 is also accurately inserted into the support hole 64A when the upper case 10 is assembled to the lower case 20. Thereby, the rotation failure of the tape feed roller 46 is suppressed, and as a result, the conveyance failure of the tape can be suppressed.

  The support hole 64B is provided at a position adjacent to any of the three wall portions (the peripheral wall 22, the connection boss 23, and the isolation wall 29) extending upward from the bottom wall 21. The peripheral wall 22 forms the side surface of the tape cassette 1. The connection boss 23 is connected to the connection pin 13 and fixes the upper case 10 to the lower case 20. The isolation wall 29 restricts the vertical movement of the film tape 59 and the ink ribbon 60 conveyed toward the roller surface 100A by the restricting portion 70, and prevents the double-sided adhesive tape 58 from sticking by the sticking preventing portion 80. The three ribs extend from the three walls having these unique functions to the periphery of the support hole 64B.

  As described above, the three ribs can be provided in a narrow space around the periphery of the support hole 64B by connecting the three ribs to the wall portion standing on the periphery of the support hole 64B. Further, since each rib is provided on a different wall portion, each rib can be provided in a radially outward direction of the support hole 64B. As a result, the outer peripheral side of the tape feed roller 46 (specifically, the tubular portion 100) can be surrounded by three ribs from different directions, and the posture of the tape feed roller 46 can be further stabilized. Furthermore, the physical strength of each rib can be improved by connecting each rib to the wall.

  In the above embodiment, the film tape 59 corresponds to the “first tape” of the present invention. The upper protrusion 101 corresponds to the “first protrusion” of the present invention. The lower protrusion 102 corresponds to the “second protrusion” of the present invention. The support hole 64A corresponds to the “first support hole” of the present invention. The connecting pin 13 corresponds to the “extending portion” of the present invention. The support hole 64B corresponds to the “second support hole” of the present invention. The connecting boss 23 corresponds to the “first standing portion” of the present invention. The isolation wall 29 corresponds to the “second standing portion” of the present invention. The double-sided adhesive tape 58 corresponds to the “second tape” of the present invention.

  The tape cassette 1 of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

  In the said embodiment, although the tape cassette 1 mounted in the laminate type was illustrated, if this is a tape cassette provided with the tape feed roller 46, this invention is applicable. For example, as shown in FIG. 8, the present invention is applied to a tape cassette mounted in a so-called receptor type in which a printing tape 57 is wound around a first tape spool 40 and an ink ribbon 60 is wound around a ribbon spool 42. You may apply. In this case, in the separating wall 29, the sticking prevention unit 80 is not used, while the regulation unit 70 regulates the vertical movement of the print tape 57 and the ink ribbon 60 that are conveyed toward the roller surface 100A.

  Moreover, in the said embodiment, the guide part 92 and three ribs (the 1st rib 31, the 2nd rib 32, the 3rd rib 33) incline toward the support hole 64B, respectively. However, the guide portion 92 may not be an inclined surface as long as it is a surface provided below the roller support portion 91. In addition, the three ribs may not be inclined walls as long as they are erected along the support hole 64B. Furthermore, in the said embodiment, although the 3rd rib 33 is a lower end convex part provided in the base of the sticking prevention part 80, the 3rd rib 33 should just be connected with the isolation wall 29 continuously.

DESCRIPTION OF SYMBOLS 1 Tape cassette 2 Cassette case 10 Upper case 11 Upper wall 13 Connecting pin 20 Lower case 21 Bottom wall 22 Perimeter wall 23 Connecting boss 29 Isolation wall 31 First rib 32 Second rib 33 Third rib 46 Tape feed roller 57 Printing tape 58 Both surfaces Adhesive tape 59 Film tape 64A, 64B Support hole 70 Restriction part 71 Upper restriction part 72 Lower restriction part 73 Connecting pin 80 Adhering prevention part 91 Roller support part 92 Guide part 100 Cylindrical part 100A Roller surface 101 Upper protrusion part 102 Lower protrusion part 103 Shaft hole 104 Engagement part

Claims (5)

A box-shaped cassette case including an upper case having an upper wall, and a lower case having a bottom wall and a peripheral wall extending from a peripheral edge of the bottom wall toward the upper case;
A first tape having a printing surface on which characters are printed, housed in the cassette case;
A tape feed roller that conveys the first tape along a first path between the upper wall and the bottom wall;
The tape feed roller is
The upper wall and the bottom wall have a cylindrical shape having an axial direction parallel to the opposing vertical direction, and have a roller surface that is a circumferential surface for guiding the first tape, and the upper wall and the bottom wall A cylindrical part that can freely rotate between,
A first projecting portion projecting upward from one end side in the axial direction from the cylindrical portion;
A shaft hole into which a shaft body that extends in the axial direction in the cylindrical portion and rotationally drives the tape feed roller is inserted;
An engagement portion that is a protrusion that extends from the inside of the shaft hole to the lower side, which is the other end side in the axial direction, and engages with a shaft body that is inserted into the shaft hole;
A part of the engaging portion, and a second projecting portion projecting downward from the cylindrical portion,
The upper case is
A first support hole that is a hole formed in the upper wall and supports the first protrusion inserted from the lower side so as to rotate around the axis;
An extended portion provided at a position adjacent to the first support hole and at a position spaced apart from the first path, and extending from the upper wall to the lower side and coupled to the lower case;
The lower case is
A hole portion provided in a position near the peripheral wall in the bottom wall and opposed to the first support hole, wherein the second protrusion inserted from the upper side is supported to rotate about the axis. A second support hole,
A first standing portion provided at a position adjacent to the second support hole and at a position spaced apart from the first path, extending from the bottom wall to the upper side and connected to the extending portion;
Provided at a position adjacent to the second support hole and a position close to the first path, and having a restricting portion that restricts the vertical movement of the first tape conveyed toward the roller surface. A second standing portion extending upward from the bottom wall;
A first rib provided on the upper surface of the bottom wall and extending from the peripheral wall to the periphery of the second support hole;
A second rib provided on the upper surface of the bottom wall and extending from the first standing portion to the periphery of the second support hole;
A tape cassette comprising: a third rib provided on the upper surface of the bottom wall and extending from the second standing portion to the periphery of the second support hole. The lower case is
The cylindrical portion is provided on the upper surface of the bottom wall and provided on a part of the periphery of the second support hole, and the second protrusion is inserted into the second support hole. A roller support portion for supporting from the lower side;
The second projecting portion provided on the upper surface of the bottom wall and provided at a portion different from the roller support portion at the periphery of the second support hole, and inserted from the upper side into the second support hole. The tape cassette according to claim 1, further comprising: a guide portion that guides toward the head.   The tape cassette according to claim 2, wherein the guide portion is an inclined surface that is provided on the lower side with respect to the roller support portion and is inclined toward the lower side toward the second support hole. .   4. The device according to claim 1, wherein at least one of the first rib, the second rib, and the third rib is inclined downward toward the second support hole. 5. The tape cassette described in 1. A second tape having an adhesive surface to be affixed to the print surface, housed in the cassette case;
The tape feeding roller is configured such that the adhesive surface is a diameter of the cylindrical portion along the second path passing through the outer peripheral side of the second support hole between the upper wall and the bottom wall. After transporting to face the outside, the adhesive surface is bonded to the printing surface with the roller surface,
The second standing portion is a wall portion that is curved along a part of the circumferential shape of the second support hole across the second path, and the second tape is conveyed along the second path. On the wall surface facing the adhesive surface, the adhesive surface has a sticking prevention portion that prevents the adhesive surface from sticking to the second standing portion,
The sticking prevention part is a part in which a plurality of concavities and convexities extending from the bottom wall toward the upper side are continuously provided along the curved shape of the second standing part, and the sticking prevention Among the parts, a base part that contacts the bottom wall is provided with a lower end convex part that is a convex part protruding to the periphery of the second support hole,
The tape cassette according to any one of claims 1 to 4, wherein the third rib is the lower end convex portion.

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