JP2009262238A - Thickness determining device for sheet bundle, and stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thickness determining device for a bundle of paper sheets, determining the thickness of the sheet bundle accurately without causing a user to change his/her posture during operation, despite its simple structure. <P>SOLUTION: In the upper part of a staple setting magazine 8, a cover 35 equipped with: a curved portion overhung when viewed from the front; and an inspection window formed in the curved portion is provided, and a stationary base 2 is furnished with a resilient member arranged in slide contact with the inner surface of the curved portion, wherein the part of the resilient member, visible through the inspection window is made different according to the relative position of the magazine 8 with the stationary base 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stapler capable of binding a sheet bundle having a thin thickness to a thick one by exchanging a group of staples having different lengths, and in particular, an optimum length for a specific sheet bundle. The present invention relates to a sheet bundle thickness determining apparatus capable of providing an index for selecting a staple group and a stapler including the sheet bundle thickness determining apparatus.

  Conventionally, as a simple apparatus for determining the thickness of a sheet bundle, at least one side surface of a positioning member used when setting a sheet bundle on a stapler is provided with a staircase section. In some cases, the thickness of the sheet bundle is determined by comparing with the thickness of the sheet (see Patent Document 1).

  In this simple sheet bundle thickness determination apparatus, a staircase surface for determining the thickness of the sheet bundle is provided on the positioning member that contacts the end face of the sheet bundle. Since the thickness of the surface and the sheet bundle can be easily compared, there is an advantage that even a blind user can determine the thickness of the sheet bundle and select the binding needle group.

  However, in this simple sheet bundle thickness determining device, the thickness of the sheet bundle is determined by mainly comparing the positional relationship between each step surface and the surface of the sheet bundle visually. In a normal use state, since the positioning member is seen from obliquely above, there is a drawback that it is difficult to know an accurate thickness of the sheet bundle. That is, if the user wants to know the exact thickness of the sheet bundle, the user has to change the posture to the position where the positioning member can be seen from the side, which is not convenient.

  As another sheet bundle thickness determining apparatus, there is a complicated apparatus in which a sheet bundle thickness determining apparatus is built in a stapler.

  As this built-in type, a pointer plate that swings in conjunction with the turning operation of the operation handle is incorporated in the main body of the stapler, and the pointer at the tip of the pointer plate is attached to the top surface portion of the cover body fixed to the fixed base. There is one in which the thickness of the sheet bundle can be easily determined from the relative positional relationship between the long groove and the pointer so as to be able to move in the provided long groove (see Patent Document 2).

  However, in this built-in paper bundle thickness determination device, in addition to the pointer plate, a pointer provided at the tip of the pointer plate, a cover body that can cover the movement range of the pointer, A long groove provided on the top surface, a display section along the long groove so that the position of the pointer can be easily identified, and a support shaft on which the pointer plate can swing to generate movement of the pointer provided on the stapler body. A bearing (insertion hole) that fits on a support shaft provided on the pointer plate, a coil spring for generating a force to return the pointer plate provided between the stapler body and the pointer plate to an initial position, and a stapler Many members such as a stopper for stopping the rotation of the pointer plate provided in the main body in the direction of the initial position are required.

Therefore, the material cost, the processing cost, and the assembly cost are increased, and there is a disadvantage that the manufacturing cost for the utility becomes expensive.
JP 2002-11474 A JP-A-6-79647

  The present invention has been made to solve the problems of the simple sheet bundle thickness determining apparatus and the built-in type complicated sheet bundle thickness determining apparatus of the above-described conventional technique, and is simple in structure. It is an object of the present invention to provide a sheet bundle thickness determination device that can determine the thickness of a sheet bundle more accurately without changing the posture at the time of operation by a user, and a stapler including the sheet bundle thickness determination device. .

  In order to solve the above-mentioned problem, the invention according to claim 1 integrates a fixed base, a staple mounting magazine that moves up and down relative to the fixed base, and the fixed base and the staple mounting magazine. A stapler sheet bundle thickness determination device having a moving means for moving the binding needle mounting magazine up and down with respect to the fixed base, wherein the upper portion of the binding needle mounting magazine projects upward as viewed from the front. A binding member provided with a bending portion and a viewing window provided in the bending portion, and the fixed base is provided with an elastic member arranged in sliding contact with the inner surface of the bending portion; The position of the elastic member that can be seen from the viewing window differs depending on the relative position of the fixed base with respect to the fixed base.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the elastic member is a belt-like member having a rigid support member erected from the fixed base and an elastic property in sliding contact with the inner surface of the curved portion. And a piece.

  According to a third aspect of the present invention, in addition to the configuration of the first aspect, the elastic member is an integral structure erected from the fixed base, and is an elastically deformable portion that is in sliding contact with the inner surface of the curved portion. And a rigid portion erected from the fixed base.

  In addition to the structure of any one of claims 1 and 3, the invention described in claim 4 is divided into a plurality of portions along the longitudinal direction of the elastic member that can be seen from the viewing window. A display portion is provided.

  The invention according to claim 5 is a stapler capable of selectively mounting a plurality of types of cartridges with different markers according to the length of the staple according to the thickness of the sheet bundle on the staple mounting magazine. The sheet bundle thickness determining device according to claim 4, wherein the display unit is provided with identification means corresponding to the labels of the plurality of types of cartridges.

  According to the first aspect of the present invention, the upper part of the staple mounting magazine has a cover member provided with a curved portion projecting upward as viewed from the front and a viewing window provided in the curved portion, Is provided with an elastic member placed in sliding contact with the inner surface of the curved portion, and the portion of the elastic member that can be seen from the viewing window differs depending on the relative position of the staple mounting magazine with respect to the fixed base. If an identification means corresponding to the height of the staple mounting magazine is applied to the portion of the elastic member that can be seen from the viewing window, the elasticity that can be seen from the viewing window when a portion of the staple mounting magazine comes into contact with the surface of the sheet bundle. By confirming the location of the member, it is possible to determine the thickness of the sheet bundle set on the fixed base.

  According to the second aspect of the present invention, the elastic member includes the rigid support member that is erected from the fixed base, and the elastic strip that slides on the inner surface of the curved portion. In addition to the effect of the configuration described in Item 1, the elastic band can be slid in a state of being in close contact with the inner surface of the curved portion of the cover member by quickly following up and down movement of the staple mounting magazine. Even when a person performs a fast operation, the visibility of the elastic member seen from the viewing window is not impaired.

  According to the third aspect of the present invention, the elastic member has an integral structure standing from the fixed base, and has an elastically deformable portion that is in sliding contact with the inner surface of the bending portion, and has rigidity that stands from the fixed base. In addition to the effect of the structure according to claim 1, in addition to the effect of the configuration according to claim 1, the elastic band plate is slid in a state in which the elastic band plate is in close contact with the inner surface of the curved portion of the cover member. Since it can be moved, even if the user performs a fast operation, the visibility of the elastic member that can be seen from the viewing window is not impaired.

  According to the fourth aspect of the present invention, the portion of the elastic member that is visible from the viewing window is provided with a display section that is divided into a plurality along the longitudinal direction. In addition to the effect of any one of the configurations described above, it is possible to determine the thickness of a sheet bundle set on a fixed base of a type corresponding to the number of sections.

  According to the fifth aspect of the present invention, there is provided a stapler capable of selectively mounting a plurality of types of cartridges with different markers according to the lengths of the binding needles according to the thickness of the sheet bundle, to the binding needle mounting magazine. 5. The apparatus according to claim 4, wherein the portion is provided with identification means corresponding to a plurality of types of cartridge markers, so that the user does not change the posture during operation. Accurate sheet bundle thickness can be determined. Further, if a cartridge having a marker corresponding to the identification means visible from the viewing window is mounted on the staple mounting magazine, an optimal length staple corresponding to the thickness of a specific sheet bundle can be automatically selected. Therefore, even a beginner can bind a sheet bundle having a thin thickness to a thick thickness in an optimal state.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 of the Invention

  First, the basic structure of the stapler according to Embodiment 1 of the present invention will be described.

  FIG. 1 is a front view of a stapler provided with a sheet bundle thickness determining apparatus according to Embodiment 1 of the present invention. FIG. 2 is an enlarged cross-sectional view showing a main part of the handle mechanism of the stapler provided with the sheet bundle thickness determining apparatus according to the first embodiment of the present invention.

  As shown in FIG. 1, the stapler 100 is an operation having a fixed base 2 provided with an anvil 1 that bends the staple from the lower end, and a holding portion 5 that holds a support portion 4 that supports the needle-blade blade plate 3. A handle 6 and a staple mounting magazine 8 for mounting a cartridge 7 containing a staple connected assembly in which a large number of staples are connected are provided.

  Under the binding needle mounting magazine 8, arm members 10 and 10 of a pantograph 9 which is a vertical movement means for moving the binding needle mounting magazine 8 in the vertical direction are supported by a cross shaft 11, and further. A pantograph spring (not shown) is provided so that the vertical movement can be performed elastically. Since the pantograph spring is for returning the staple mounting magazine 8 to the initial position (uppermost end), the pantograph spring has a biasing force slightly larger than the total mass of the operation handle 6 and the staple mounting magazine 8. Is enough.

  The operation handle 6 is attached to a bearing member 14 that is integral with the staple mounting magazine 8 by a first rotation shaft 12 and a second rotation shaft 13. Further, the operation handle 6 is provided with a handle spring 15 which is an elastic member for the rotation direction, and one end of the handle spring 15 is engaged with the staple mounting magazine 8 and the handle spring 15 is engaged. The other end of 15 engages with the back surface of the operation handle 6 and slides on the back surface of the operation handle 6 as the operation handle 6 moves.

  In the stapler 100, by operating the operation handle 6, the staple mounting magazine 8 can be moved downward after the height of the second rotation shaft 13 is fixed.

  The rotating shaft vertical position fixing means for fixing the height of the second rotating shaft 13 includes a support member 16 erected on the fixed base 2 and the support member as shown in FIGS. 16, a key member 17 that is movable along the support member 16, a fixing spring 18 that engages the key member 17 with the support member 16 to stop the movement of the operation handle 6, a support member 19 that supports the key member 17, and a support member The bearing hole 20 is formed in 19 and inserted through the second rotation shaft 13 of the operation handle 6, and the second rotation shaft 13 of the operation handle 6.

  In the illustrated stapler according to the first embodiment of the present invention, two support members 16 are arranged at a predetermined interval in the width direction of the fixed base 2. A key member 17, a fixed spring 18, and a support member 19 are provided.

  As shown in FIG. 2, the first rotating shaft 12 is inserted into the first bearing portion 21 formed in the bearing member 14 that is integral with the staple mounting magazine 8, and the second rotating shaft 13. Is inserted through a second bearing portion 22 formed in the bearing member 14 that is integral with the staple mounting magazine 8.

  The 1st bearing part 21 is formed in the shape of a long hole which goes to an up-down direction, and the 1st rotating shaft 12 penetrated by this fixes the height of the 2nd rotating shaft 13 of the operation handle 6. Until then, the rotation center of the operation handle 6 is determined. Further, the second bearing portion 22 is formed in a long hole shape extending in the vertical direction, and the second rotating shaft 13 inserted through the second bearing portion 22 has a height of the second rotating shaft 13 of the operation handle 6. The center of rotation of the operation handle 6 after being fixed is determined.

  The staple mounting magazine 8 is formed in an L-shape when viewed from the front, and the staple connected assembly is forward (see FIG. 1) by a blade plate guide 23 for guiding the needle punching blade plate 3 and a pulley mechanism (not shown). And a staple guide portion 24 that enters and exits from the left side of the head. The staple guide portion 24 of the staple mounting magazine 8 is covered with a magazine cover 25 from above.

  As shown in FIGS. 1 and 2, the key member 17 is provided in a key member storage portion 26 that is integrated with the staple mounting magazine 8. The key member 17 includes a vertical portion 27 and a horizontal engagement plate portion 29 having an insertion hole 28 that is bent at the lower end portion of the vertical portion 27 and can be engaged with the support member 16. Is formed. The key member 17 has a corner portion 30 between the vertical portion 27 and the engaging plate portion 29. The key member 17 is easy to manufacture because it is possible to simultaneously perform hole processing and bending processing to form an L-shaped section by press-molding a single metal plate.

  As shown in FIGS. 1 and 2, the support member 19 is bent from the fixed portion 31, the support plate portion 32 formed by bending from the fixed portion 31, and the lower end of the support plate portion 32. A horizontal portion 33 is formed, and a support corner portion 34 is provided between the support plate portion 32 and the horizontal portion 33. The support member 19 is formed with a bearing hole 20 having the same diameter as the second rotating shaft 13, and the bearing hole 20 and the second bearing portion 22 formed in the bearing member 14 The second rotating shaft 13 is inserted into the bearing member 14 so as to be fixed. The key member 17 and the support member 19 are supported by the corner portion 30 of the key member 17 in contact with the inner side of the support corner portion 34 of the support member 19, and are provided on the operation handle 6. The load transmitting portion 6a abuts on the upper end portion of the key member 17, so that the key member 17 can swing around the corner portion 30 as a fulcrum.

  Further, the key member 17 is in contact with a fixing spring 18 that assists in engagement with the support member 16, so that the force with which the key member 17 engages with the support member 16 is increased. Since the 17 insertion holes 28 are strongly engaged with the side surfaces of the support member 16, the key member 17 cannot be reliably raised and lowered from the predetermined position of the support member 16.

  Next, a sheet bundle thickness determination apparatus according to Embodiment 1 of the present invention will be described.

  FIG. 3 is an exploded perspective view of a main part of the sheet bundle thickness determining apparatus according to the first embodiment as viewed from the rear.

  As shown in FIG. 1, a cover member 35 disposed between the key member storage portions 26, 26 provided on the left and right sides of the binding needle mounting magazine 8 is disposed at the upper central portion of the binding needle mounting magazine 8. Is detachably attached.

  The cover member 35 is a plastic molded product having a substantially U-shaped cross section including a curved portion 36 projecting upward as viewed from the front, and a front plate 37 and a rear plate 38 continuous with the curved portion 36. At the lower part of the front plate 37 of the cover member 35, there is provided a locking piece 40 that can exert an elastic restoring force by forming two vertical through grooves 39, 39. A locking claw (not shown) projecting outward is provided at the tip, and a small protruding piece 41 protruding in the horizontal direction is provided at the lower end portion of the rear plate 38 of the cover member 35.

  In order to attach the cover member 35 to the upper side of the staple mounting magazine 8, a first engagement piece provided on the rear side of the top surface portion 42 of the magazine cover 25 that is previously attached to the upper side of the staple mounting magazine 8. 43, the protruding piece 41 of the rear plate 38 of the cover member 35 is engaged, and then the binding piece 40 of the front plate 37 of the cover member 35 is elastically deformed inward by a finger, in advance, the staple mounting magazine 8 is aligned with the second engagement piece 44 provided in front of the top surface portion 42 of the magazine cover 25 mounted on the upper side of the magazine 8, and the finger that has pressed the locking piece 40 is released. The engaging claw may be engaged with the second engaging piece 44.

  Above the curved portion 36 of the cover member 35, a viewing window 45 made of a through hole is provided. An elastic member 46 is provided on the inner side of the viewing window 45 so as to be in sliding contact with the inner surface of the bending portion 36.

  The elastic member 46 may be a belt-like body having an integral structure as long as one end of the elastic member 46 can be attached to the fixed base 2, but the upright portion extending upward from the fixed base 2 has sufficient rigidity to maintain its posture. It must be Specifically, when the elastic member 46 is a belt-shaped body having an integral structure of stainless steel, the thickness of the portion of the cover member 35 that is in sliding contact with the inner surface of the curved portion 36 can be elastically deformed by about 0.1 mm. It is assumed that the other fixed base 2 side portion (upright portion) having a rigidity of about 0.5 to 1 mm in thickness can be employed.

  In the illustrated sheet bundle thickness determining apparatus according to the first embodiment of the present invention, a rigid column member 47 erected from the fixed base 2 and the upper end portion of the column member 47 can be elastically deformed. The elastic member 46 is constituted by the plastic strip 48, and the strip 48 can be kept in sliding contact with the inner surface of the curved portion 36 of the cover member 35.

  The support member 47 for attaching the strip 48 includes two vertical support parts 50 and 50 each provided with an attachment screw part 49 at the lower end, and a horizontal connecting part 51 that connects the two vertical support parts 50 and 50. One end of a plastic strip 48 is fixed to the horizontal connecting portion 51. The support member 47 inserts the attachment screw portion 49 into the attachment hole 52 provided in the upper surface of the fixed base 2 in advance, and then applies a flat washer 54 to the lower surface of the boss 53 having the attachment hole 52 to attach the attachment screw portion 49. The screw 55 is screwed into the screw hole from below to be attached to the fixed base 2.

  At least a portion of the belt-like piece 48 that can be seen from the viewing window 45 is provided with a display unit 56 that is divided into a plurality of colors along the longitudinal direction.

  The illustrated stapler according to the first embodiment of the present invention can selectively mount a plurality of types of cartridges with different markers according to the length of the binding needle according to the thickness of the sheet bundle P on the binding needle mounting magazine 8. In this case, the number of divisions of the display unit 56 of the strip 48 by the color coding is the same as the number of replaceable cartridge types determined by the stapler 100 to be used.

  For example, when the thickness of the sheet bundle P is as small as 3 mm or less, a blue mark is attached to the cartridge 7 containing the staple connected assembly in which the short staples that are optimally linked are connected, and the thickness of the sheet bundle P is 3 to 3. A yellow marker is attached to the cartridge 7 containing the staple connected assembly in which the staples having a medium length optimum for a medium thickness of 5 mm are connected, and the thickness of the sheet bundle P is 5 to 5 mm. Considering a case where a green marker is attached to the cartridge 7 containing a staple connected assembly in which long staples that are optimal for a thick case of 7 mm or less are connected, the display portion 56 of the elastic member 46 has a band-like piece 48. The discriminating means divided in the order of green, yellow and blue is applied from the free end side, the blue area is set so that the thickness of the sheet bundle P is 3 mm or less, and the yellow area is set to the thickness of the sheet bundle P. Set to correspond to 3 to 5 mm, and the green area Saga 5~7mm to correspond to the following will be set.

  Next, the operation of the stapler 100 provided with the sheet bundle thickness determining apparatus according to the first embodiment of the present invention will be described.

  FIG. 4 is a front view of the stapler when the operation handle is rotated after the operation handle is pressed and the height of the second rotation shaft of the operation handle is fixed, and FIG. 5 is a handle at that time. It is the expanded sectional view which showed the principal part of the mechanism.

  FIG. 6 is a front view of the stapler when the operation handle is further pressed and rotated after the height of the second rotation shaft of the operation handle is fixed.

  In the initial state of the stapler 100, as shown in FIG. 1, the needle striking blade plate 3 is at the uppermost position, and the operation handle 6 is inclined most. At this time, the first rotation shaft 12 is in contact with the upper end in the first bearing portion 21, and the second rotation shaft 13 is in contact with the lower end in the second bearing portion 22. .

  Therefore, if the tilt of the operation handle 6 remains in the initial state, as shown in FIG. 2, the force that the load transmitting portion 6a of the operation handle 6 tilts the upper end of the key member 17 backward (clockwise). In this state, the engagement of the insertion hole 28 of the key member 17 with the support member 16 provided on the fixed base 2 is released. Therefore, in the initial state of the stapler 100, if the sheet bundle P is disposed on the fixed base 2 of the stapler 100 and the center portion of the operation handle 6 is pressed downward with a slight force against the biasing force of the pantograph spring, The staple mounting magazine 8 supported by the pantograph 9 which is the vertical movement means is pushed down in a state parallel to the fixed base 2 and can finally land on the surface of the sheet bundle P.

  That is, in the stapler 100 according to the first embodiment of the present invention, the staple mounting magazine 8 is simply pantographed without requiring a large force such as rotating the operation handle 6 to push down the needle striking blade plate 3. The staple mounting magazine 8 can be landed on the surface of the sheet bundle P by pushing down the central portion of the operation handle 6 with a small force that can overcome the weak biasing force of the spring. Actually, it is sufficient to apply the pressing force of one finger to land the staple mounting magazine 8 on the surface of the sheet bundle P with the operation handle 6 in the initial state.

  Therefore, when using the stapler 100 according to the first embodiment of the present invention, if the center of the operation handle 6 is lightly pressed downward while the inclination of the operation handle 6 is in an initial state, the staple mounting magazine 8 is lowered. The cover member 35 attached to the staple mounting magazine 8 is lowered together. On the other hand, since the elastic member 46 is fixed to the fixed base 2, when the staple mounting magazine 8 is lowered, the strip-like piece is in sliding contact with the inner surface of the curved portion 36 of the cover member 35 while following its movement. 48 will be pushed down by the inner surface of the curved surface 36 of the cover member 35, and a free end will hang down gradually in connection with this.

  Therefore, as described above, if the display unit 56 color-coded according to the thickness of the sheet bundle P is employed, the position where the staple mounting magazine 8 has landed on the surface of the sheet bundle P is the thickness of the sheet bundle P. Is a position corresponding to 5 to 7 mm, the green part of the strip 48 can be visually recognized from the viewing window 45, and when the thickness of the sheet bundle P is a position corresponding to 3 to 5 mm, If the yellow portion of the strip 48 is visible from the viewing window 45 and the thickness of the sheet bundle P is equal to or less than 3 mm, the blue portion of the strip 48 can be viewed from the viewing window 45. .

  Therefore, the user simply selects a cartridge 7 that is labeled with the same color as the color that can be seen from the viewing window 45 and mounts the cartridge 7 in the staple mounting magazine 8 so that the specific paper bundle P is loaded. An optimal length of staples can be automatically selected.

  When the staple mounting magazine 8 is landed on the surface of the sheet bundle P and then the handle front end portion 6b of the operation handle 6 is pressed, the operation handle 6 rotates about the first rotation shaft 12 as shown in FIG. From the state to the state shown in FIG. 4, the needle striking blade plate 3 descends along the blade plate guide portion 23, and one staple is taken out from the cartridge 7 mounted on the staple mounting magazine 8 to form a sheet bundle P. Ready to drive. For this reason, it becomes easy to recognize the timing at which the staple is ejected perpendicularly to the sheet bundle P.

  Here, since the fitting member 4a attached to the support portion 4 of the needle striking blade plate 3 is supported in the support hole 5a of the clamping portion 5 of the operation handle 6, while the operation handle 6 is lowered, The handle base end portion 6c of the operation handle 6 is lifted with the fitting member 4a as a fulcrum, and the first rotating shaft 12 is placed on the upper end of the first bearing portion 21 as shown in FIGS. From the contacted state, the interior of the first bearing portion 21 is slightly lowered as shown in FIGS. 4 and 5. At the same time, the second rotating shaft 13 is in contact with the lower end of the second bearing portion 22 as shown in FIGS. 1 and 2, and then the second rotation shaft 13 as shown in FIGS. The inside of the bearing portion 22 rises.

  At this time, as shown in FIG. 2, the key member 17 is inclined around the corner portion 30 while leaning against the load transmitting portion 6 a of the operation handle 6. By further pressing the operation handle 6, the key member 17 is released from leaning on the load transmitting portion 6a of the operation handle 6 as shown in FIG. 5, and the insertion hole 28 of the key member 17 is fixed. It engages with the side surface of the support member 16 provided on the base 2.

  Thus, by fixing the position of the key member 17, the height of the support member 19 is also fixed at the same time, and the bearing hole 20 formed in the support member 19 prevents the second rotation shaft 13 from moving up and down. Thus, the height of the second rotation shaft 13 is fixed. When the height of the second rotation shaft 13 is fixed, the staple mounting magazine 8 cannot move in the vertical direction. When the key member 17 engages with the support member 16 and the operation handle 6 is locked, the center of rotation of the operation handle 6 changes from the first rotation shaft 12 to the second rotation shaft 13. .

  Therefore, after the binding needle mounting magazine 8 is landed on the sheet bundle P, when the operation handle 6 is further pressed, the operation handle 6 is rotated about the second rotation shaft 13, and the handle spring 15 is moved to the binding needle. By pressing the loading magazine 8 downward, the binding needle mounting magazine 8 is slightly lowered, and further pressing on the sheet bundle P by the binding needle mounting magazine 8 is possible, and the sheet bundle P is bound securely and cleanly. Can do.

  At this time, the height itself of the second rotation shaft 13 does not change, but the binding needle mounting magazine 8 is lowered by the force of the handle spring 15 pressing the binding needle mounting magazine 8, so that the second rotation shaft Since the position of the second bearing portion 22 with respect to 13 is lowered, the second rotating shaft 13 appears to be raised in the second bearing portion 22. At the same time, the first rotation shaft 12 is rotated around the second rotation shaft 13 to be lowered in the first bearing portion 21.

  When the operation handle 7 is further pushed down, the fitting member 4a held by the support hole 5a is lowered, the needle striking blade plate 3 is swung down, and the staple is provided at the lower end of the blade plate guide portion 23. The sheet is discharged from the binding needle discharge port 57 and is ejected perpendicularly to the sheet bundle P, and the sheet bundle P is bound.

  Further, since the operation handle 6 starts to rotate, the key member 17 and the support member 16 that fix the vertical position of the staple mounting magazine 8 are provided, so that the staple mounting magazine 8 is placed on the surface of the sheet bundle P. The landing response can be obtained, and then the operation handle 6 can be rotated to drive the staple into the sheet bundle P. Therefore, the timing for ejecting the binding needle to the sheet bundle P becomes easy to understand, and it is not necessary to use an extra force.

  Further, since the pantograph 9 for moving the staple mounting magazine 8 up and down on the fixed base 2 is provided, the mechanism of the pantograph 9 is operated so that the staple mounting magazine 8 is parallel to the fixed base 2. It is moved up and down while maintaining the state. Therefore, the structure in which the staple mounting magazine 8 is moved up and down in parallel with the fixed base 2 is simple.

  Further, a pantograph spring for supporting the staple mounting magazine 8 and a handle spring 15 for rotating the operation handle 6 are provided, and an urging force applied to the pantograph spring is applied to the handle spring 15. Since the force is smaller than the force, when a pressing force is applied to the operation handle 6, the pantograph spring is first elastically deformed, and the operation handle 6 is lowered with the staple mounting magazine 8 while maintaining a predetermined angle. After landing on the surface, the handle spring 15 is elastically deformed, and the rotation of the operation handle 6 is started. Therefore, until the staple is landed on the surface of the sheet bundle P, the staple is lowered vertically, and then the staple is driven out on the surface of the sheet bundle P. Therefore, the staple is bound vertically to the sheet bundle P. Can do.

  Further, since the support member 16 is provided on the fixed base 2 to guide the vertical movement of the staple mounting magazine 8 and the key member 17 is movable along the support member 16, the staple is provided. The mounting magazine 8 can move up and down the binding needle mounting magazine 8 in a state where the key member 17 is not engaged with the side surface of the support member 16, and the binding needle in a state where the key member 17 is engaged with the side surface of the support member 16. The vertical position of the mounting magazine 8 is fixed. Therefore, the key member 17 can be fixed at any position in the vertical direction of the support member 16 and can be fixed, and the staple mounting magazine 8 is fixed at an optimum height according to the thickness of the sheet bundle P. can do.

  Further, the support portion 5 formed on the needle blade plate 3 is inserted into the guide elongated holes 36 and 36 formed in the blade plate guide portion 12, and the fitting members 37 and 37 are inserted into the operation handle 7. Are formed with support holes 38 and 38 for supporting the fitting members 37 and 37, and the operation handle 7 rotates while the fitting members 37 and 37 and the support holes 38 and 38 are in line contact with each other. , The support holes 38 and 38 rotate around the rotation shaft 10 while making line contact with the fitting members 37 and 37. Accordingly, the friction between the support holes 38, 38 and the fitting members 37, 37 is minimized because the contact surface is minimal, so that the operation handle 7 is easy to rotate and the operability of the operation handle 7 is improved. Can be improved.

  In the stapler 100 according to the first embodiment of the present invention, a cover provided with a curved portion 36 projecting upward as viewed from the front and a viewing window 45 provided in the curved portion 36 at the upper portion of the staple mounting magazine 8. Since the fixed base 2 is provided with an elastic member 46 disposed in sliding contact with the inner surface of the bending portion 36, the elastic member 46 can quickly follow the vertical movement of the staple mounting magazine 8. 46 can be slid while being in close contact with the inner surface of the curved portion 36 of the cover member 35, the visibility of the elastic member 46 visible from the viewing window 45 can be improved even when the user performs a fast operation. There is no loss.

  Further, since the portion of the elastic member 46 visible from the viewing window 45 differs depending on the relative position of the binding needle mounting magazine 8 with respect to the fixed base 2, the binding needle mounting magazine 8 is placed on the portion of the elastic member 46 visible from the viewing window 45 in advance. If identification means such as color coding according to the height of the stapler 100 is applied, when the staple mounting magazine 8 comes into contact with the surface of the sheet bundle P, the peeper facing the front end 6b of the operation handle 6 of the stapler 100 is viewed. By confirming the portion of the elastic member 46 visible from the window 45, the thickness of the sheet bundle P set on the fixed base 2 can be accurately determined without changing the posture at the time of operation by the user.

  Furthermore, the stapler 100 according to the first embodiment of the present invention can selectively mount a plurality of types of cartridges with different markers depending on the length of the binding needle according to the thickness of the sheet bundle P on the binding needle mounting magazine 8. In this case, the number of sections of the strip 48 by color-coding the display portion 56 is the same as the number of replaceable types of cartridges determined by the stapler 100 to be used. If the cartridge 7 having the label corresponding to is attached to the staple mounting magazine 8, the staple having the optimum length for the specific sheet bundle P can be automatically selected. Therefore, according to the stapler 100 according to the first embodiment of the present invention, even a beginner can bind the sheet bundle P from a thin thickness to a thick thickness in an optimal state.

1 is a front view of a stapler provided with a sheet bundle thickness determining apparatus according to Embodiment 1 of the present invention. FIG. FIG. 3 is an enlarged cross-sectional view showing a main part of a handle mechanism of a stapler provided with a sheet bundle thickness determining apparatus according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view of a main part of the sheet bundle thickness determining apparatus according to the first embodiment when viewed from the rear. FIG. 6 is a front view of the stapler when the operation handle is rotated after the operation handle of the stapler according to Embodiment 1 of the invention is pressed and the height of the second rotation shaft of the operation handle is fixed. The main part of the handle mechanism is shown when the operation handle is rotated after the operation handle of the stapler according to Embodiment 1 of the present invention is pressed and the height of the second rotation shaft of the operation handle is fixed. It is an expanded sectional view. It is a front view of a stapler when the operation handle is further pressed and rotated after fixing the height of the second rotation shaft of the operation handle of the stapler according to the first embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Fixed base 3 Needle striking blade board 4 Support part 5 Clamping part 6 Operation handle 7 Cartridge 8 Binding needle mounting magazine 9 Pantograph 12 1st rotation axis 13 2nd rotation axis 14 Bearing member 15 Handle spring 16 Support member 17 Key member 18 Fixed spring 19 Support member 20 Bearing hole 21 First bearing portion 22 Second bearing portion 28 Insertion hole 29 Engaging plate portion 35 Cover member 36 Bending portion 45 Viewing window 46 Elastic member 47 Posting member 48 Strip piece 100 Stapler

Claims (5)

  A fixed base, a staple mounting magazine that moves up and down relative to the fixed base, and a movement that moves the staple mounting magazine up and down relative to the fixed base while integrating the fixed base and the staple mounting magazine. And a cover member provided with a curved portion projecting upward as viewed from the front and a viewing window provided in the curved portion at an upper portion of the staple mounting magazine. The fixed base is provided with an elastic member arranged in sliding contact with the inner surface of the curved portion, and the fixed base is separated from the viewing window by the relative position of the staple mounting magazine with respect to the fixed base. An apparatus for determining a thickness of a sheet bundle of a stapler, wherein the visible elastic member portions are different.   The said elastic member has the rigid support member standingly arranged from the said fixed base, and the strip | belt-shaped piece which has the elasticity which slidably contacts the inner surface of the said curved part, The Claim 1 characterized by the above-mentioned. Stapler sheet thickness determination device.   The elastic member has an integral structure standing from the fixed base, and includes an elastically deformable portion that is in sliding contact with the inner surface of the bending portion, and a rigid portion that stands from the fixed base. The apparatus for determining a thickness of a sheet bundle of a stapler according to claim 1.   The stapler according to any one of claims 1 and 3, wherein a portion of the elastic member visible from the viewing window is provided with a display section divided into a plurality along the longitudinal direction thereof. Sheet bundle thickness determination device.   A stapler capable of selectively mounting a plurality of types of cartridges with different markers according to the length of the staple according to the thickness of the sheet bundle, to the staple mounting magazine, wherein the markers of the plurality of types of cartridges are displayed on the display unit. A stapler comprising the stapler sheet bundle thickness determining apparatus according to claim 4, wherein identification means corresponding to the above is provided.

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