JP2012055638A - Tissue holder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure safety and cutting performance of a tissue cutting mechanism in a tissue holder device equipped with the rotary blade-type tissue cutting mechanism.SOLUTION: The tissue cutting mechanism 7 includes a rotary blade unit 7A equipped with a rotary blade 71 and provided at a body of holder 2 side and a fixed blade unit 7B equipped with a fixed blade 83 and provided at an opening and closing cover 4 side. The tissue cutting mechanism is so configured that when the opening and closing cover 4 is in an open state, a blade edge 83a of the fixed blade 83 is stored at a support bracket 80 side and when the opening and closing cover 4 is in a closed state, the blade edge 83a of the fixed blade 83 projects out of the support bracket 80 such that it can be brought into contact with a blade edge 71a of the rotary blade 71. Due to this structure, the blade edge 83a of the fixed blade 83 can be surely kept out of touch with a hand of an operator, and thus a very safe tissue holder device can be provided.

Description

  The present invention relates to a paper holder device that holds a paper roll and can automatically feed, fold, and cut the paper from the paper roll according to a user's request, and more specifically, the paper holder. The present invention relates to a paper cutting mechanism in the apparatus.

  The paper cutting mechanism in the paper holder device includes a linear blade method (see, for example, Patent Document 1) that relatively linearly moves two plate-like blades to cut the paper, a plate-like fixed blade, and a rocking displacement. A swinging blade method (see, for example, Patent Document 2) that cuts paper between the movable blade and a fixed blade by swinging the movable blade, and a plate-like fixed blade and a predetermined shear angle. It is roughly classified into a rotary blade method (see, for example, Patent Document 3) in which a rotary blade is brought into contact with the rotation direction to cut paper.

  Among these methods, the rotary blade method is becoming mainstream as a paper cutting mechanism of a paper holder device that requires a layout property within a limited space because the movable region is small and the cutting mechanism can be made compact.

JP 2000-287872 A Japanese Patent Laid-Open No. 7-246592 Japanese Patent Laid-Open No. 2003-72998

  By the way, in the paper holder device, the holder main body portion that holds the paper roll and the portion from the upper surface to the front surface of the holder main body portion are covered and, if necessary (for example, when replenishing the paper roll, maintenance of the internal mechanism) It is common to have an open / close cover that is sometimes opened and closed. In the rotary blade type paper cutting mechanism, the rotary blade provided with the drive mechanism is disposed in the holder main body having sufficient space, and the fixed blade not requiring the drive mechanism is disposed in the open / close cover. When the cover is closed (that is, when the paper holder device is used), the rotary blade and the fixed blade are configured to come into contact with the rotation of the rotary blade.

  However, in such a rotary blade type paper cutting mechanism, when the opening / closing cover is opened, that is, when the paper roll is replenished or when the internal mechanism is maintained, the rotary blade is fixed on the holder body side. Since the blades are exposed to the outside on the opening / closing cover side, there is a possibility that the operator's hand may accidentally touch the rotary blade or fixed blade during the above work, which is improved in terms of ensuring operational safety. There is room for.

  In addition, in the rotary blade type paper cutting mechanism, it is essential that the blade edge of the rotary blade is in contact with the blade edge of the fixed blade with a predetermined shear angle and at an optimum contact pressure. If the damage is impaired, the required cutting performance cannot be obtained. For example, if the contact pressure is too low, a portion that is not cut occurs, and in an extreme case, it may not be cut at all. In addition, if the contact pressure is excessive, the blade tip at the foremost end in the rotation direction of the rotary blade may have a large impact when it comes into contact with the blade of the fixed blade, which may cause anxiety to the user, and the wear of the blade tip will be large. There are concerns about problems such as a decrease in durability.

  SUMMARY OF THE INVENTION Accordingly, the present invention has been made for the purpose of enhancing the safety of the paper cutting mechanism and ensuring good cutting performance in a paper holder device having a rotary blade type paper cutting mechanism.

  In the present invention, the following configuration is adopted as a specific means for solving such a problem.

  In the first invention of the present application, a paper roll 10 is held in a holding space surrounded by a holder main body 2 and an opening / closing cover 4 attached to the holder main body 2 so as to be openable and closable. In the paper holder device in which the paper 10a delivered from the paper 10 is cut to a predetermined length by the paper cutting mechanism 7, the holder main body section 2 is provided with a rotary blade 71 that rotates the paper cutting mechanism 7 with a predetermined shear angle. The rotary blade unit 7A attached to the side and the plate-like fixed blade 83 and the fixed blade unit 7B attached to the open / close cover 4 side are provided, and the fixed blade 8 is formed by the open / close cover 4. When in the open state, at least the blade edge 83a is housed on the side of the support bracket 80 that supports the fixed blade 83, and the open / close cover - 4 is characterized in that the cutting edge 83a is configured to be able to contact the cutting edge 71a of the rotary blade 71 of the rotary blade unit 7A projecting from the support bracket 80 when in the closed state.

  In the second invention of the present application, in the paper holder device according to the first invention, the fixed blade 83 is pivotally supported by the support bracket 80 by the support shafts 84 provided at both ends thereof, and The swing lever 88 mounted so as to be swingable is urged and biased by the first biasing means 85 so that the relative rotational position of the swing lever 88 is always constant. The movable lever 88 is constantly urged by the second urging means 87 in the direction in which the fixed blade 83 is accommodated, and the swing lever 88 rotates when the open / close cover 4 changes from the open state to the closed state. The fixed blade 83 is configured to protrude against the urging force of the second urging means 87 by engagement with a stopper 78 provided on the blade unit 7A side.

  According to a third invention of the present application, in the paper holder device according to the first or second invention, the fixed blade unit 7B is moved from the open / close cover 4 to the open / close cover 4 by the third urging means 42. It is characterized in that it is elastically supported so as to be movable in the direction of contact with and away from the.

  In the fourth invention of the present application, in the paper holder device according to the first, second, or third invention, the rotary blade unit 7A is a guide having an outer peripheral surface 77a that substantially matches the cutting edge circle of the rotary blade 71. In the closed state of the opening / closing cover 4, the blade tip 83 a of the fixed blade 83 comes into contact with the outer peripheral surface 77 a of the guide wheel 77 so that the protruding amount of the blade tip 83 a is always kept constant. It is characterized by that.

  In the fifth invention of the present application, a paper roll 10 is held in a holding space surrounded by a holder main body 2 and an opening / closing cover 4 attached to the holder main body 2 so as to be openable and closable. In the paper holder device in which the paper 10a delivered from the paper 10 is cut to a predetermined length by the paper cutting mechanism 7, the holder main body section 2 is provided with a rotary blade 71 that rotates the paper cutting mechanism 7 with a predetermined shear angle. A rotary blade unit 7A attached to the side and a fixed blade unit 7B provided with a plate-like fixed blade 83 and attached to the open / close cover 4 side are configured, and the rotary blade unit 7A is made up of the rotary blade 71. The rotation blade 71 starts to rotate from the specific position with reference to the specific position in the rotation direction, and the specific position after one rotation. A protector 76 is provided on the back side of the rotary blade 71 so as to cover the rotary blade 71 from the back side. When the rotary blade 71 is stopped at the specific position, the protector 76 rotates the rotary blade 71. It is characterized by being configured to prevent external exposure of the blade 71.

  In the present invention, the following effects can be obtained.

  (A) According to the paper holder device according to the first invention of the present application, when the opening / closing cover 4 is in an open state, that is, when the paper roll is replenished or when the internal mechanism is maintained, Since at least the blade edge 83a is housed on the support bracket 80 side, it is possible to prevent the operator's hand from touching the blade edge 83a portion with certainty, and the safety during the above work is ensured. High paper holder device can be provided. Further, when the opening / closing cover 4 is in a closed state, that is, when using the paper holder device, the cutting edge 83a of the fixed blade 83 protrudes from the support bracket 80 and comes into contact with the cutting edge 71a of the rotary blade 71. The paper 10a can be cut accurately, and high cutting performance is ensured.

(B) According to the paper holder device concerning the 2nd invention of this application, in addition to the effect given in the above (a), the following peculiar effects are acquired. That is, in the paper holder device of the present invention, the fixed blade 83 is pivotally supported on the support bracket 80 by the support shafts 84 provided at both ends thereof, and the swing is attached to the support shaft 84 so as to be swingable. The lever 88 is elastically biased by the first biasing means 85 so that the rotational position relative to the swinging lever 88 is always constant, while the swinging lever 88 is moved to the second biasing force. The means 87 is always energized in the direction in which the fixed blade 83 is accommodated, and the swing lever 88 is provided with a stopper 78 provided on the rotary blade unit 7A side when the open / close cover 4 changes from the open state to the closed state. Since the fixed blade 83 protrudes against the urging force of the second urging means 87 by the engagement of
(B-1) In the open state of the open / close cover 4, the swing lever 88 is held in a state where the fixed blade 83 is positioned at the storage position by the urging force of the second urging means 87. The fixed blade 83 is reliably prevented from protruding inadvertently when the opening / closing cover 4 is in the open state, and the safety of the paper roll replenishment operation with the opening / closing cover 4 being opened is further ensured. More certain,
(B-2) In the closed state of the open / close cover 4, the swing lever 88 is held in a state where the fixed blade 83 is positioned at the protruding position against the biasing force of the second biasing means 87. However, in this case, the fixed blade 83 is urged by the urging force of the first urging means 85 so that the relative rotation position with respect to the swing lever 88 is always constant. When the contact pressure between the blade edge 83a of the fixed blade 83 and the blade edge 71a of the rotary blade 71 that contacts this is excessive for some reason, the urging force of the first urging means 85 is increased. Accordingly, the fixed blade 83 is displaced toward the storage side, whereby an appropriate contact pressure is recovered, and the cutting performance in the paper cutting mechanism 7 is maintained in a good state.
Etc. are obtained.

(C) According to the paper holder device according to the third invention of the present application, in addition to the effects described in the above (a) or (b), the following specific effects can be obtained. That is, in the paper holder device of the present invention, the fixed blade unit 7B is elastically supported by the third urging means 42 so as to be movable toward and away from the open / close cover 4 with respect to the open / close cover 4. Because
(C-1) If the operator's hand accidentally touches the fixed blade unit 7B when the opening / closing cover 4 is opened and a paper roll replenishment operation is performed, the fixed blade unit 7B By elastically displacing relative to the opening / closing cover 4, the impact on the operator's hand is mitigated, and the safety during work is further enhanced.
(C-2) When the open / close cover 4 is closed, the contact pressure between the blade edge 83a of the fixed blade 83 and the blade edge 71a of the rotary blade 71 becomes excessive for some reason, and this excessive contact pressure is reduced. When the first urging means 85 cannot be resolved by only the elastic displacement of the first urging means 85, the fixed blade unit 7B as a whole is elastically displaced relative to the opening / closing cover 4 side, thereby causing an excessive contact pressure load state. Is resolved, thereby restoring good cutting performance,
Etc. are obtained.

  (D) According to the paper holder device according to the fourth invention of the present application, in addition to the effects described in the above (a), (b) or (c), the following specific effects can be obtained. That is, in the paper holder device of the present invention, the rotary blade unit 7A is provided with a guide ring 77 having an outer peripheral surface 77a substantially matching the cutting edge circle of the rotary blade 71, and the guide ring is in the closed state of the open / close cover 4. 77, the cutting edge 83a of the fixed blade 83 is always held constant by contacting the cutting edge 83a of the fixed blade 83 with the outer peripheral surface 77a of the fixed blade 83. Therefore, the cutting edge 83a of the fixed blade 83 and the rotating blade The collision of the 71 with the cutting edge 71a is prevented without fail, and both of them are always in contact with each other at an appropriate contact pressure, whereby the cutting performance is maintained well over a long period of time, and the fixed blade 83 And durability of the rotary blade 71 is improved.

  (E) According to the paper holder device according to the fifth invention of the present application, when the opening / closing cover 4 is in an open state, that is, when the paper roll is replenished or when the internal mechanism is maintained, the rotary blade unit 7A. Is exposed to the outside, but the rotary blade 71 is prevented from being exposed to the outside by the protector 76, so even if an operator's hand touches the protector 76 during the operation, the rotary blade 71 is not exposed to the rotary blade 71. Therefore, the safety in the work is ensured, and as a result, a highly safe paper holder device can be provided.

It is an external appearance perspective view in the use condition of the paper holder apparatus which concerns on embodiment of this invention. It is an external appearance perspective view of the state which opened the opening / closing cover in the paper holder apparatus shown in FIG. FIG. 2 is a perspective view showing an internal configuration in a state where one side cover is removed in the paper holder device shown in FIG. 1. It is IV-IV sectional drawing of FIG. It is a perspective view in the rotary blade accommodation state of a rotary blade unit. FIG. 6 is a view taken in the direction of arrow VI in FIG. 5. It is a perspective view in the rotary blade exposure state of a rotary blade unit. It is a VIII arrow line view of FIG. It is a perspective view at the time of changing a viewpoint position in the perspective view of FIG. It is a perspective view in the fixed blade accommodation state of a fixed blade unit. It is XI-XI sectional drawing of FIG. It is a perspective view in the fixed blade protrusion state of a fixed blade unit. It is XIII-XIII sectional drawing of FIG. It is a positioning state explanatory drawing of a rotary blade unit and a fixed blade unit.

  Hereinafter, the present invention will be specifically described based on preferred embodiments.

  1 to 4 show a paper holder device 1 according to an embodiment of the present invention. The paper holder device 1 is, for example, attached to a wall surface of a toilet, holds a paper roll 10 formed by winding toilet paper therein, and extends the paper 10a from the paper roll 10 to a predetermined length as required by the user. The paper 1a is fed out and folded in a zigzag shape, and the folded paper 1a is cut at a position close to the paper roll 10 for use, and a series of operations from feeding the paper 10a to cutting is performed. It is configured to be done automatically. Such an automatic operation saves time and effort for the user to pull out the paper 10a by hand, fold it and cut it, and is particularly suitable for the elderly.

  The paper holder device 1 that automatically performs such a series of operations includes a holder main body portion 2 described below, a paper receiving portion 3 disposed below the holder main body portion 2, and the holder main body portion 2. An opening / closing cover 4 is provided to open and close a portion from the front surface to the upper surface as necessary. Hereinafter, the configuration of each of these units will be specifically described.

"Holder body 2"
As shown in FIGS. 1 to 4, the holder main body 2 includes a pair of left and right side walls 21, 21 and a back wall 23, and covers the outside of the side walls 21, 21 with side covers 22, 22, respectively. Configured. Further, the front surface and the upper surface of the holder body 2 are continuous openings, and the opening / closing cover 4 described below is attached to the openings. Further, the bottom surface side of the holder main body 2 is also opened, and a paper receiving portion 3 described later is disposed here.

  In the inner chamber 20 of the holder body 2 (that is, the space surrounded by the pair of left and right side walls 21, 21, the back wall 23, the paper receiver 3, and the opening / closing cover 4), The paper support mechanism 5, the paper feed mechanism 6, the paper cutting mechanism 7, and the paper folding mechanism 8 described above are arranged.

"Paper support mechanism 5"
The paper support mechanism 5 supports the paper roll 10 so that the paper roll 10 can be rewound from the lower side, and is rotatably supported across the pair of left and right side walls 21 and 21 at a lower position of the inner chamber 20. The pair of support rolls 11 and 11 are configured as main parts, and the holder main body part is used as an auxiliary part for restricting the swing of the paper roll 10 supported by the support rolls 11 and 11 in the front-rear direction. 2 is provided with a curved plate-shaped roll guide 15 attached to the front surface side of the rear wall 23 and a curved plate material 16 attached to the rotary blade unit 7A side of the paper cutting mechanism 7 described later.

"Paper feed mechanism 6"
As shown in FIGS. 3 and 4, the paper feeding mechanism 6 is disposed close to the upper part of the front side of the inner chamber 20 of the holder body 2 in the vertical direction across the pair of left and right side walls 21 and 21. The upper drive roll 51, the lower driven roll 52, and the presser roll 53 that is laterally arranged near the corner portion of the opening / closing cover 4 are configured. The drive roll 51 is rotationally driven by a drive mechanism (not shown) disposed outside one side wall 21 of the holder body 2. The driven roll 52 receives a rotational force from the drive roll 51 by the belt 54 and is rotated integrally with the drive roll 51 in the same direction. As shown in FIG. 4, the presser roll 53 is pressed and contacted with the drive roll 51 in the closed state of the opening / closing cover 4, and receives the rotational force from the drive roll 51 in the opposite direction to the drive roll 51. It is rotated.

  Accordingly, in a state where the opening / closing cover 4 is opened, the paper 10 a pulled out from the paper roll 10 supported by the support rolls 11, 11 of the paper support mechanism 5 is lowered through the outside of the drive roll 51 and the driven roll 52. The paper 10 a is placed between the driving roll 51 and the pressing roll 53 by pulling out (see FIGS. 2 and 4) and closing the opening / closing cover 4 in this state and bringing the pressing roll 53 into pressure contact with the driving roll 51. (The set state of the paper 10a). When the drive roll 51 is rotated from this set state, the paper 10 a is sequentially sent out downward by the drive roll 51 and the presser roll 53. The follower roll 52 suppresses the shaking of the paper 10 a sent out by the drive roll 51 and the presser roll 53.

  The paper 10a is sent out by a predetermined length by one operation. Specifically, when the user brings his hand close to the moving body detection sensor 9 provided on the upper surface of the one side cover 22 of the holder main body 2, the moving body detection sensor 9 detects the movement of the hand. A drive motor (not shown) is configured to rotate for a predetermined time. The paper feed mechanism 6 and the paper cutting mechanism 7 to be described below are driven by the same drive mechanism. The drive mechanism is driven by the proximity sensor 12 provided on the side cover 22 of the holder body 2 and the opening / closing cover 4. As long as the closed state of the opening / closing cover 4 is not detected, the drive mechanism does not operate even if the moving body detection sensor 9 detects a moving body. This ensures that the paper feed mechanism 6 or the paper cutting mechanism 7 is inadvertently activated when the opening / closing cover 4 is opened, that is, when the paper roll 10 is replenished or when the internal mechanism is maintained. Thus, safety in use of the paper holder device 1 is ensured.

"Paper folding mechanism 8"
The paper folding mechanism 8 is attached to the lower end side of the holder main body 2 and is used by alternately folding the paper 10a fed from the paper feeding mechanism 6 in its thickness direction, As shown in FIGS. 1 to 4, a flat bottom wall 31 that inclines downward from the near side to the back side, and surrounds the periphery of the bottom wall 31 and has a predetermined width on the front side from the upper end toward the bottom wall 31. The paper receiving portion 3 is provided with a peripheral wall 33 provided with a cut portion 34 that is cut. A front end portion of the bottom wall 31 is also cut corresponding to the cut portion 34 of the peripheral wall 33, and a continuous cut portion extending from the peripheral wall 33 to the bottom wall 31 is folded paper. It becomes the takeout port when grasping 10a and taking it out.

  Further, on the back side of the paper receiving portion 3, a defining plate 35 that defines the folding width of the paper 10a is disposed. The regulation plate 35 is selectively fitted into any one of the plurality of fitting grooves 37 of the adjusting portion 36 provided on the peripheral wall 33 side, so that the folding width of the paper 10a can be increased or decreased. ing.

"Paper cutting mechanism 7"
As shown in FIG. 4, the paper cutting mechanism 7 includes a rotary blade unit 7A and a fixed blade unit 7B.

"Rotating blade unit 7A"
As shown in FIGS. 5 to 9, the rotary blade unit 7 </ b> A is configured by assembling a rotating portion 69 to a support bracket 70.

  The support bracket 70 includes a horizontally long curved plate 16 having a substantially S-shaped curved cross-sectional shape, and an extending portion 72 that extends to the convex surface side of the curved plate 16 at the left and right ends of the middle of the curved plate 16 in the bending direction. It is configured with. Further, the upper end portion 16a of the curved plate member 16 is bent toward the extending side of the extended portion 72 so as to be opposed to the extended portion 72 in the vertical direction. Therefore, a required space is formed in the support bracket 70 between the extended portion 72 and the upper end portion 16 a of the curved plate member 16. In addition, a later-described rotating portion 69 is accommodated in the space portion.

  Further, the pair of left and right extending portions 72, 72 are formed with protrusions 73 each having a wedge-like shape protruding upward. In addition, receiving grooves 79 extending in the vertical direction are formed at the left and right ends of the upper end portion 16a of the curved plate member 16. Furthermore, as shown in FIG. 9, a stopper 78 constituted by a surface that is inclined downward toward the front side is provided on the side portion of the one extending portion 72.

  The rotating portion 69 is a deformed rod body in which a part of the outer peripheral surface of the round rod body is cut into a substantially L shape over the entire length in the axial direction (see FIG. 14), and both ends thereof are axially outside. The blade holder 74 is provided with a support shaft 75 extending in the direction. In a portion having an arcuate outer peripheral surface of the blade holder 74 (that is, a non-cut-off portion), the strip-like rotary blade 71 has a predetermined shear angle as the rotating portion 69 rotates. In this state, a predetermined rotational phase is secured between the one end side and the other end side. Needless to say, the mounting state of the rotary blade 71 is set so that the rotation locus circle of the blade edge 71a coincides at any position in the axial direction of the rotary blade 71.

  A circular ring-shaped guide ring 77 is coaxially attached to the blade holder 74 at one end side of the blade holder 74. The outer peripheral surface of the guide wheel 77 is set so as to coincide with the rotation locus circle of the cutting edge 71 a of the rotary blade 71.

  Further, a protector 76 having a substantially T-shaped cross-sectional shape is attached to the portion of the substantially L-shaped cut surface of the blade holder 74, and the rotary blade 71 sandwiches the axial center position of the blade holder 74. It is located on the opposite side of the protector 76. Therefore, when viewed from the protector 76 side, the rotary blade 71 is always located on the back side of the protector 76, and as shown in FIG. 6, the protector 76 is in the rotated position where the protector 76 faces the front surface. It will be in the state where it was covered with and exposure to the outside was blocked.

  As shown in FIGS. 5 and 6, the rotating portion 69 rotates in the direction in which the rotating blade 71 moves from the upper side of the rotating portion 69 to the lower side through the near side (arrow r direction). Is set to The rotating portion 69 is driven to rotate one rotation at a time by a driving mechanism (not shown). The rotation start position (ie, stop position) is determined by the protector 76 as shown in FIG. The rotary blade 71 is set to a position extending rearward on the back side of the protector 76. The rotating portion 69 starts rotating from the stop position, and as shown in FIG. 8, the rotary blade 71 moves downward on the near side of the support bracket 70 and again reaches the stop position shown in FIG. Driven by rotation. Therefore, the rotary blade 71 is prevented from being exposed to the outside by the protector 76 at the stop position.

  The rotational drive of the rotating unit 69 is started when the feeding operation of the paper feeding mechanism 6 is stopped or at a time earlier by a predetermined time than the stopping time, but is interlocked with the operation of the paper feeding mechanism 6. The rotation control of the rotation unit 69 is automatically performed by a control unit (not shown) of the drive mechanism.

"Fixed blade unit 7B"
The fixed blade unit 7B is disposed on the open / close cover 4 side, and cooperates with the rotary blade 71 of the rotary blade unit 7A when the open / close cover 4 is closed, that is, when the paper holder device 1 is in use. The paper 10a is cut by working, and is configured by attaching a fixed blade 83 to a support bracket 80 as shown in FIGS.

  The support bracket 80 is formed of a horizontally long curved plate and a curved plate portion 81a provided with a horizontally long opening 93 at the center of the curved direction, and a flat guide plate portion 81b rising upward from the upper end of the curved plate portion 81a. The main body portion 81 and vertical wall portions 82 and 82 extending to the near side at the left and right end portions of the curved plate portion 81a are configured. A concave portion 95 that is recessed from the lower end position of the guide plate portion 81b toward the back side is formed in the upper portion of the inner surface of the curved plate portion 81a.

  Further, fitting grooves 90 that are cut upward are formed on the bottom surfaces of the vertical wall portions 82 and 82 of the support bracket 80, respectively, and downward on the upper end portions of the vertical wall portions 82. Each of the wedge-shaped guide projections 89 is provided.

  The fixed blade 83 is integrally formed of a strip material having a predetermined length, and a blade edge 83a is provided at one ridge line portion. Support shafts 84 are provided at both ends in the length direction of the fixed blade 83 so as to protrude outward in the axial direction. The fixed blade 83 connects the support shafts 80 to the vertical walls of the support bracket 80. It is attached to the support bracket 80 side by being pivotally supported by the portions 82 and 82.

  A swing lever 88 is rotatably attached to one support shaft 84 of the fixed blade 83. The fixed blade 83 is moved toward the cutting edge 83a of the fixed blade 83 by the urging force of a spring 85 (corresponding to “first urging means” in the claims) attached to the support shaft 84. The side surface is urged so as to abut against the stopper 91 provided on the swing lever 88, whereby the blade tip 83a rotates in the maximum direction relative to the swing lever 88 in the direction protruding from the concave portion 95 side. The position is specified. In the state where the maximum rotation position of the fixed blade 83 is regulated by the contact with the stopper 91, for example, when an external force is applied to the blade edge 83a of the fixed blade 83 to push it to the back side. The fixed blade 83 is rotated toward the concave portion 95 against the urging force of the spring 85.

  On the other hand, the swing lever 88 is provided with a spring 87 (corresponding to “second urging means” in the claims) attached to a support shaft 86 provided at a position appropriately separated from the pivot point. By the force, the fixed blade 83 is oscillated and biased in a direction in which the fixed blade 83 is accommodated in the recess 95 of the support bracket 80. Further, the tip of the swing lever 88 engages with the stopper 78 on the rotary blade unit 7A side in the closed state of the opening / closing cover 4, and receives an external force in the pushing direction from the stopper 78 side. It has become.

  Therefore, as shown in FIG. 11, the external force is not applied to the distal end side of the swing lever 88, that is, the open / close cover 4 is open, and the distal end side of the swing lever 88 is the free end. In this state, the swing lever 88 is urged to rotate in the direction of arrow b about the support shaft 84 by the spring 85, and the fixed blade 83 connected to the swing lever 88 moves in the direction of arrow d. It rotates and is stored in the concave portion 95 side of the main body portion 81, and the cutting edge 83 a is substantially flush with the mouth edge of the concave portion 95.

  On the other hand, as shown in FIG. 13, when the opening / closing cover 4 is in the closed state and the tip of the swing lever 88 is engaged with the stopper 78 on the rotary blade unit 7A side, the swing is performed. The lever 88 is pushed by the stopper 78 and rotates in the direction of arrow a. As the swing lever 88 rotates, the fixed blade 83 rotates about the support shaft 84 in the direction of arrow c, and from the recess 95. It protrudes to the near side, and the cutting edge 83a is brought into a state where it can contact the cutting edge 71a of the rotary blade 71 on the rotary blade unit 7A side (see FIG. 14).

  On the other hand, as shown in FIGS. 13 and 14, the fixed blade unit 7 </ b> B configured as described above has an attachment boss 92 projecting on the back side of the support bracket 80 as an attachment portion 41 of the opening / closing cover 4. It is attached to the opening / closing cover 4 side by fixing with a screw 43. In this case, a spring 42 (“third biasing means” in the claims) is provided between the mounting boss 92 and the mounting portion 41. Corresponding to the elastic deformation of the spring 42, the fixed blade unit 7B is movable relative to the opening / closing cover 4 in the contact / separation direction.

“Positioning of rotary blade unit 7A and fixed blade unit 7B”
The relative positioning of the rotary blade unit 7A and the fixed blade unit 7B is as shown in FIG. That is, the rotary blade unit 7A is fixed to the holder main body 2 side, and the attachment position to the holder main body 2 is fixedly set in advance. On the other hand, the fixed blade unit 7B is mounted on the opening / closing cover 4 side, and the mounting position on the opening / closing cover 4 side can be displaced within the range of elastic deformation of the spring 42, and is fixed. It is not set. Therefore, when the opening / closing cover 4 is closed, the rotary blade unit 7A and the fixed blade unit 7B are in an appropriate relative positional relationship and must be maintained.

  For this reason, in the paper holder apparatus 1 of this embodiment, the following two positioning methods are employ | adopted.

First Positioning Method While the protrusions 73 are formed on the pair of left and right extending portions 72, 72 of the support bracket 70 of the rotary blade unit 7A, the lower ends of the pair of left and right vertical wall portions 82 of the fixed blade unit 7B A fitting groove 90 that cuts upward is formed, and when the opening / closing cover 4 is closed from the open state, the fitting grooves 90 on the stationary blade unit 7B side are formed on the projections 73, 73 on the rotary blade unit 7A side. By fitting 90, the rotary blade unit 7A and the fixed blade unit 7B are positioned in the vertical direction and the front-rear direction.

Second positioning method The receiving grooves 79 are provided at both left and right ends of the support bracket 70 of the rotary blade unit 7A, respectively, while the guide protrusions 89 are provided at both left and right ends of the support bracket 80 of the fixed blade unit 7B. When the opening / closing cover 4 is closed from the open state, the guide blades 89 on the fixed blade unit 7B side are fitted into the receiving grooves 79 on the rotary blade unit 7A side so that the rotary blade unit is engaged. 7A and the fixed blade unit 7B are positioned in the left-right direction (lateral width direction).

  When the opening / closing cover 4 is closed by positioning by these two methods, that is, when the paper holder device 1 is in use, the cutting edge 83a of the fixed blade 83 protrudes forward as shown in FIG. The blade edge 83a contacts the outer peripheral surface of the guide wheel 77 on the rotary blade unit 7A side, and the relative position of the blade edge 71a of the rotary blade 71 and the blade edge 83a of the fixed blade 83 is set appropriately.

“Operation of paper holder device 1 and its effect”
The operation and effects of the paper cutting mechanism 7 of the paper holder device 1 configured as described above are as follows.

  (A) In the paper cutting mechanism 7 in the paper holder device 1 of this embodiment, when the opening / closing cover 4 is in an open state, that is, during replenishment work of the paper roll 10 or maintenance work of the internal mechanism. When the opening / closing cover 4 is opened and a person puts a hand into the inner chamber 20 to perform a required operation, the fixed blade 83 supports the support on the opening / closing cover 4 side, that is, the fixed blade unit 7B side. Since it is housed in the recessed portion 95 side on the bracket 80 side, it is possible to prevent the operator's hand from touching the cutting edge 83a portion of the fixed blade 83 in a sure manner. Further, on the holder main body 2 side, that is, on the rotary blade unit 7A side, the rotary blade unit 7A itself is exposed in the inner chamber 20, but the rotary portion 69 is in a stopped state and the Since the rotary blade 71 is prevented from being exposed to the outside by the protector 76, even if the operator's hand touches the protector 76 during the work, it is possible to touch the rotary blade 71 in advance and reliably. To be prevented. Due to the synergistic effect of both safety functions, high safety can be ensured during operations such as replenishment of the paper roll 10, and the paper holder device 1 excellent in safety can be provided. The improvement of the product value of 1 can be expected.

  (B) In the paper cutting mechanism 7 in the paper holder device 1 of this embodiment, the fixed blade 83 is pivotally supported by the support bracket 80 by the support shafts 84 provided at both ends thereof, and is swung by the support shaft 84. The oscillating lever 88 movably attached is elastically biased by the spring 85 so that the relative rotation position with respect to the oscillating lever 88 is always constant, while the oscillating lever 88 is The spring 87 is always urged in the direction in which the fixed blade 83 is stored, and when the opening / closing cover 4 changes from the open state to the closed state, the swing lever 88 is provided with a stopper 78 provided on the rotary blade unit 7A side. Since the fixed blade 83 is configured to protrude against the urging force of the spring 87 by the engagement, the swing lever 88 is opened when the open / close cover 4 is open. The fixed blade 83 is held in the storage position by the urging force of the spring 87, and the fixed blade 83 is reliably prevented from protruding inadvertently when the open / close cover 4 is open. As a result, it is possible to further ensure the safety during the work such as the paper roll replenishment work with the opening / closing cover 4 opened.

  In the closed state of the open / close cover 4, the swing lever 88 is held in a state where the fixed blade 83 is positioned at the protruding position against the biasing force of the spring 87. The fixed blade 83 is urged by the urging force of the spring 85 so that the rotational position relative to the swing lever 88 is always constant. For example, the cutting edge 83a of the fixed blade 83 is caused by some cause. When the contact pressure between the blade 71a of the rotary blade 71 and the blade 71 in contact therewith becomes excessive, the fixed blade 83 is displaced toward the storage side against the urging force of the spring 85. Thus, the proper contact pressure is restored, and the cutting performance of the paper cutting mechanism 7 is maintained in a good state.

  (C) In the paper cutting mechanism 7 in the paper holder device 1 of this embodiment, the fixed blade unit 7B is movable with respect to the opening / closing cover 4 in the direction of contacting / separating the opening / closing cover 4 with the spring 42. For example, when the operator's hand accidentally touches the fixed blade unit 7B side when the opening / closing cover 4 is opened and a paper roll replenishment operation or the like is performed, the fixed blade is fixed. The unit 7B is elastically displaced with respect to the opening / closing cover 4, so that the impact on the operator's hand is alleviated and the safety during the operation is further enhanced.

  Further, when the open / close cover 4 is closed, the contact pressure between the blade edge 83a of the fixed blade 83 and the blade edge 71a of the rotary blade 71 becomes excessive for some reason, and this excessive contact pressure is applied to the spring 85. When the fixed blade unit 7B as a whole is elastically displaced toward the opening / closing cover 4 side, the excessive contact pressure load state is eliminated, thereby achieving good cutting performance. Is recovered.

As a synergistic effect of these both, it is possible to provide a paper cutting mechanism 7 that always exhibits good cutting performance, and further improvement of the commercial value of the paper holder device 1 provided with the paper cutting mechanism 7 can be expected.
(D) In the paper cutting mechanism 7 in the paper holder device 1 of this embodiment, the rotary blade unit 7A is provided with a guide ring 77 having an outer peripheral surface 77a substantially matching the cutting edge circle of the rotary blade 71, and the opening / closing cover In the closed state of FIG. 4, since the cutting edge 83a of the fixed blade 83 is in contact with the outer peripheral surface 77a of the guide wheel 77, the protruding amount of the blade edge 83a is always kept constant. Collision between the cutting edge 83a of 83 and the cutting edge 71a of the rotary blade 71 is prevented in a sure and reliable manner, and both of them always come into contact with each other at an appropriate contact pressure, thereby maintaining good cutting performance over a long period of time. In addition, the durability of the fixed blade 83 and the rotary blade 71 is enhanced. As a result, the paper cutting mechanism 7 having excellent cutting performance and durability can be provided. Further improvement of commercial value of the paper holder device 1 provided with a cutting mechanism 7 can be expected.

DESCRIPTION OF SYMBOLS 1 ... Paper holder apparatus 2 ... Holder body part 3 ... Paper receiving part 4 ... Open / close cover 5 ... Paper support mechanism 6 ... Paper feed mechanism 7 ... Paper cutting mechanism 7A ... Rotary blade unit 7B ... Fixed blade unit 8 ..Paper folding mechanism 9 ..Motion detection sensor 10 ..Paper roll 11 ..Support roll 12 ..Proximity sensor 15 ..Roll guide 16 ..Curved plate material 20 ..Inner chamber 21. 22 ..Side cover 23 ..Back wall 31 ..Bottom wall 32 ..Regulator plate 33 ..Perimeter wall 34 ..Incision part 41 ..Mounting part 42 ..Spring (third biasing means)
43 .. Screw 51 .. Drive roll 52 .. Drive roll 53 .. Presser roll 70 .. Support bracket 71 .. Rotary blade 72 .. Extension portion 73 .. Projection 74 .. Blade holder 75. ..Protector 77 ..Guide wheel 78 ..Stopper 79 ..Reception groove 80 ..Support bracket 81 ..Main body part 82 ..Vertical wall part 83 ..Fixed blade 84 ..Support shaft 85 ..Spring (first Energizing means)
86 .. Support shaft 87 .. Spring (second biasing means)
88 ・ ・ Oscillating lever 89 ・ ・ Guide protrusion 90 ・ ・ Fitting groove 91 ・ ・ Stopper 92 ・ ・ Mounting boss 93 ・ ・ Opening 95 ・ ・ Recess

Claims (5)

A paper roll (10) is held in a holding space surrounded by a holder main body (2) and an opening / closing cover (4) attached to the holder main body (2) so as to be openable and closable. A paper holder device in which the paper (10a) fed from (10) is cut to a predetermined length by a paper cutting mechanism (7),
The paper cutting mechanism (7) includes a rotary blade unit (7A) provided with a rotary blade (71) rotating at a predetermined shear angle and attached to the holder body (2) side, and a plate-like fixed blade (83 And a fixed blade unit (7B) attached to the opening / closing cover (4) side,
When the open / close cover (4) is in the open state, the fixed blade (83) is housed on the side of the support bracket (80) that supports the fixed blade (83). 4) When the blade is in the closed state, the blade edge (83a) protrudes from the support bracket (80) and can contact the blade edge (71a) of the rotary blade (71) of the rotary blade unit (7A). A paper holder device characterized by that. In claim 1,
The fixed blade (83) is pivotally supported on the support bracket (80) by pivots (84) provided at both ends thereof, and is a swing lever attached to the pivot (84) so as to be swingable. On the other hand, the first biasing means (85) is elastically biased against the swing lever (88) so that the relative rotation position with respect to the swing lever (88) is always constant.
The swing lever (88) is always biased by the second biasing means (87) in the direction in which the fixed blade (83) is stored, and the open / close cover (4) is changed from the open state to the closed state. When changing, the rocking lever (88) engages with a stopper (78) provided on the rotary blade unit (7A) side to resist the urging force of the second urging means (87). A paper holder device configured to project the fixed blade (83). In claim 1 or 2,
The fixed blade unit (7B) is elastically supported by the third biasing means (42) so as to be movable toward and away from the open / close cover (4) with respect to the open / close cover (4). Paper holder device characterized by. In claim 1, 2 or 3,
The rotary blade unit (7A) includes a guide wheel (77) having an outer peripheral surface (77a) that substantially matches the cutting edge circle of the rotary blade (71), and the guide wheel is in the closed state of the open / close cover (4). The protrusion (83a) of the fixed blade (83) comes into contact with the outer peripheral surface (77a) of (77) so that the protruding amount of the blade (83a) is always kept constant. Paper holder device. A paper roll (10) is held in a holding space surrounded by a holder main body (2) and an opening / closing cover (4) attached to the holder main body (2) so as to be openable and closable. A paper holder device in which the paper (10a) fed from (10) is cut to a predetermined length by a paper cutting mechanism (7),
The paper cutting mechanism (7) includes a rotary blade unit (7A) provided with a rotary blade (71) rotating at a predetermined shear angle and attached to the holder body (2) side, and a plate-like fixed blade (83 And a fixed blade unit (7B) attached to the opening / closing cover (4) side,
The rotary blade unit (7A) uses the specific position in the rotation direction of the rotary blade (71) as a reference, the rotary blade (71) starts rotating from the specific position, and stops at the specific position after one rotation. And a protector (76) for covering the rotary blade (71) from the back side on the back side of the rotary blade (71), and in a stopped state of the rotary blade (71) at the specific position. Is configured to prevent external exposure of the rotary blade (71) by the protector (76).

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