JP2017087350A - Puncher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a puncher which secures strength and has a reduced weight.SOLUTION: A puncher includes: a base in which a hole is formed; a boring blade arranged on an upper side of the hole; and an elevating and lowering mechanism for elevating and lowering the boring blade. The base is made of a resin member and includes a support box for supporting the elevating and lowering mechanism and a reinforcing portion for reinforcing the support box. The base is made of a resin member and the reinforcing portion is further provided so as to achieve securing of strength and weight reduction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a punch for making a hole in an object such as paper.

  2. Description of the Related Art Conventionally, there has been proposed a punch including a drilling blade, a base, and an elevating mechanism that is supported by the base and moves the drilling blade up and down (see, for example, Patent Document 1). When the perforating blade is pressed against an object such as paper placed on the base, a large force acts on the base. Therefore, the base is made of a metal member in order to ensure strength.

Japanese Patent Laying-Open No. 2015-6715

  However, when the base is made of a metal member, there is a problem that the weight of the punch increases, and it is difficult for the user to carry and difficult to handle.

  This invention is made | formed in view of such a situation, and it aims at providing the punch which ensures intensity | strength and achieves weight reduction.

  The punch according to the present invention is a punch comprising a base in which a hole is formed, a drilling blade disposed above the hole, and an elevating mechanism for raising and lowering the drilling blade, wherein the base is a resin member And has a support box that supports the lifting mechanism and a reinforcing portion that reinforces the support box.

  In the present invention, the base is made of a resin member, and further a reinforcing portion is provided to ensure the strength and reduce the weight.

  In the punch according to the present invention, the reinforcing portion includes a metal fitting or a rib arranged in the support box.

  In the present invention, a metal fitting or a rib is provided inside the support box to ensure strength.

  In the punch according to the present invention, the plurality of ribs hang downward from the upper surface portion of the support box, and the plurality of ribs include a first rib and a second rib shorter than the first rib. It is characterized by that.

  In the present invention, by providing a second rib shorter than the first rib inside the support box, a space for moving the cut piece of the object cut by the drilling blade is secured in the support box, and the cutting is performed. Make it easier to eject the pieces.

  The punch according to the present invention can protrude upward from the upper surface portion of the support box, and a plurality of locking portions for locking the object are arranged in parallel along the side surface of the support box. The plurality of locking portions are arranged at different positions in the intersecting direction.

  In the present invention, a plurality of locking portions that can protrude upward are arranged at positions corresponding to different dimensions of a plurality of objects, for example, different paper standards. By bringing the paper to be pierced into contact with the locking portion corresponding to the paper standard, the dimension between the edge of the paper and the hole can be made to the dimension corresponding to the paper standard. it can.

  The punch according to the present invention is characterized in that a metal plate arranged on the lower side of the lifting mechanism is provided on an upper surface portion of the support box, and a longitudinal edge portion of the metal plate is bent.

  In the present invention, by bending the longitudinal edge of the metal plate, the metal plate is prevented from being bent by the force generated when the drilling blade is pushed into the object.

  In the punch according to the present invention, the drilling blade has a plurality of blade parts arranged side by side, and includes a first metal plate and a second metal plate located above the first metal plate. Each of the first metal plate and the second metal plate has a plurality of through holes corresponding to the plurality of blade portions, and the plurality of through holes in the second metal plate are the first metal plate. A corresponding through hole that is disposed at a reference position corresponding to the position of the through hole and has the same or larger dimension as the through hole of the first metal plate, and is disposed at a position different from the reference position. Or a non-corresponding through hole having a size smaller than that of the corresponding through hole.

  In the present invention, when the blade portion is inserted into the non-corresponding through hole, positioning with respect to the drilling blade is performed, and each blade portion of the drilling blade is smoothly inserted into the through hole of the second metal plate.

  The punch according to the present invention is characterized in that the plurality of through holes in the second metal plate are arranged, and the plurality of non-corresponding through holes are respectively located at both ends in the arrangement direction.

  In the present invention, when a plurality of non-corresponding through holes are separated in the alignment direction and the blade portion is inserted into the non-corresponding through hole, the drilling blade is prevented from being displaced in the direction intersecting the alignment direction. To do.

  The punch according to the present invention is further characterized in that the non-corresponding through holes are arranged in a central portion in the arrangement direction.

  In the present invention, by further disposing the non-corresponding through hole in the center portion, the center portion of the drilling blade is prevented from being displaced in the direction intersecting the alignment direction.

  In the punch according to the present invention, a lower limit stopper for determining a lower limit position of the drilling blade is provided above the support box, and a recess into which the lower limit stopper is inserted is formed in the drilling blade. It is characterized by.

  In the present invention, a guide member for guiding an object such as paper to the lower side of the punching blade is provided on the upper surface of the support box, and a gap for inserting paper is formed below the guide member. Providing the lower limit stopper prevents the drilling blade from colliding with the guide member and reducing the size of the gap.

  In the punch according to the present invention, the lifting mechanism has a pivot extending in the lateral direction and a lever that passes through the pivot and rotates around the pivot, and a handle is provided at one end of the lever. A middle portion of the lever between the handle and the pivot is connected to the drilling blade, and an upper limit stopper for determining an upper limit position of the drilling blade is provided at the other end of the lever. It is characterized by that.

When the upper limit stopper comes into contact with the piercing blade, the piercing blade may be bent by the contact or the contact portion of the piercing blade may be deformed, and smooth movement of the piercing blade may be hindered. In the present invention, the upper limit stopper contacts the upper surface portion of the support box or a member provided on the upper surface portion, and thus does not affect the drilling blade.

  In the punch according to the present invention, the handle has a horizontally long plate shape in which the vertical width of both end portions is shorter than the vertical width of the central portion.

  When the user operates the end of the handle, a biased load acts on the drilling blade. Therefore, in the present invention, when making the hole at the center of the handle larger than the width at both ends and making a hole in the object, the user operates the center of the handle to Make the load acting on the surface uniform.

  The punch according to the present invention includes a plurality of the levers, and the handle is connected to the plurality of levers.

  In the present invention, a plurality of levers are integrated by a handle, and the load acting on each lever is made uniform. As a result, the occurrence of the bending of the handle can be prevented, the load acting on the drilling blade can be made uniform, and the drilling blade can be prevented from being deformed and lowered.

    In the punch according to the present invention, ensuring the strength and reducing the weight can be realized by configuring the base with a resin member and further providing a reinforcing portion.

It is a perspective view which briefly shows a punch. It is a bottom view which outlines a support box. It is sectional drawing which made the III-III line shown in FIG. 2 the cutting line. It is a top view which shows a reinforcement metal fitting schematically. It is a rear view which outlines a reinforcement metal fitting. FIG. 6 is a right side view schematically showing a reinforcing metal fitting. It is a top view which shows a bottom cover schematically. It is a top view which outlines a support box. It is a partial expansion perspective view which briefly shows a latching | locking part. It is right side sectional drawing which shows the punch which abbreviate | omitted the cover. FIG. 3 is a plan view schematically showing a die plate. It is a top view which shows a spacer schematically. It is a top view which shows the guide plate schematically. It is a rear view which briefly shows a guide plate. FIG. 6 is a right side view schematically showing a guide plate. It is an enlarged plan view which shows a corresponding through-hole and a non-corresponding through-hole schematically. It is a plane perspective view of the punch which saw through the inside of a cover. FIG. 4 is a partially enlarged perspective view schematically showing a configuration near a left bearing and a right bearing. FIG. 6 is a right side view schematically showing a left bearing. It is a top view which shows a left bearing schematically. It is a side view which shows a lever schematically. It is a front view which shows the drilling blade schematically. It is a top view which outlines a handle base. It is a rear view which briefly shows a handle base. FIG. 5 is a right side view schematically showing a handle base. FIG. 24 is a cross-sectional view taken along line XXVI-XXVI shown in FIG. 23. FIG. 24 is a cross-sectional view taken along line XXVII-XXVII shown in FIG. 23. It is a partial expansion perspective view which shows the connection part of a lever and a mounting plate or a surrounding wall part. FIG. 3 is a plan view schematically showing an upper cover. FIG. 6 is a right side view schematically showing an upper cover. It is a rear view which briefly shows an upper cover. It is a top view which briefly shows a lower cover. FIG. 6 is a right side view schematically showing a lower cover. It is a rear view which briefly shows a lower cover.

  Hereinafter, the present invention will be described with reference to the drawings showing a punch 100 according to an embodiment. In the following description, the top / bottom / left / right front / rear shown in the figure are used. FIG. 1 is a perspective view schematically showing the punch 100. The punch 100 includes a rectangular base 1 that is long to the left and right and short to the front and back. The base 1 is made of a resin member. An elevating mechanism 10 for elevating a drilling blade 40 described later is provided on the upper surface portion of the base 1. The elevating mechanism 10 is disposed along the rear edge portion of the upper surface portion. The elevating mechanism 10 includes a handle 5, a lever 6, a right bearing 33, a left bearing 34, a pivot 35, a spring 36, a lock 38, and the like which will be described later (see FIG. 17 and the like). The elevating mechanism 10 is covered with a rectangular box-like cover 10a elongated in the left and right directions.

  Four openings 10b, 10b, 10b, 10b are arranged in parallel in the left-right direction at the front upper corner of the cover 10a. The elevating mechanism 10 includes four levers 6, 6, 6, and 6, and the four levers 6 protrude through the four openings 10b, respectively. One end of the lever 6 is located outside the cover 10a, and the other end of the lever 6 is located inside the cover 10a. A handle 5 is provided at one end of the lever 6.

  The base 1 includes a rectangular support box 2 whose bottom side is open, and a rectangular bottom lid 3 that closes the opening of the support box 2. The bottom lid 3 is detachably attached to the support box 2. 2 is a bottom view schematically showing the support box 2, and FIG. 3 is a cross-sectional view taken along line III-III shown in FIG.

  A plurality of insertion holes 25, 25,..., 25 for inserting screws 200 (see FIG. 10) are provided at the rear edge of the upper surface of the support box 2. On the front side of the insertion hole 25, left and right ribs 23 that extend to the left and right are provided on the back surface of the upper surface of the support box 2. The left and right ribs 23 protrude downward from the upper surface of the support box 2 and are provided over the entire left and right width of the support box 2.

  A plurality of short ribs 22, 22,... 22 (reinforcing portions, second ribs) extending from the left and right ribs 23 to the front side are juxtaposed in the left and right direction on the back surface of the upper surface of the support box 2. Between the short ribs 22, a plurality of long ribs 21, 21,... 21 (reinforcing portions, first ribs) are juxtaposed in the left-right direction. The long ribs 21 do not need to be provided between all the short ribs 22, and the left and right positions thereof are appropriately determined according to the specifications of the punch 100. The long rib 21 extends from the left and right ribs 23 to the front side. The short rib 22 and the long rib 21 protrude downward from the upper surface portion of the support box 2.

  As shown in FIG. 2, the longitudinal dimension of the short rib 22 is shorter than that of the long rib 21. As shown in FIG. 3, the vertical dimension of the short rib 22 is shorter than that of the long rib 21. Therefore, a space is secured below the short rib 22. Depending on the specifications of the punch 100, the vertical dimension of some long ribs 21 may be equivalent to that of the short ribs 22.

Between the short ribs 22 and the long ribs 21, or between the short ribs 22, a plurality of rectangular base through holes 24 (holes) penetrating vertically are provided. The base through holes 24 are arranged side by side along the left and right ribs 23. A plurality of blade portions 42, 42,... 42 of a drilling blade 40 to be described later are inserted into the plurality of base through holes 24, respectively. A first discharge recess 2 a for discharging a cut piece cut by the drilling blade 40 is formed at the left end portion of the front side surface portion of the support box 2.
The first discharge recess 2a penetrates back and forth.

  As indicated by a broken line in FIG. 2, a reinforcing metal fitting 26 (reinforcing part, metal fitting) is attached to the inner central portion of the support box 2. 4 is a plan view schematically showing the reinforcing bracket 26, FIG. 5 is a rear view schematically showing the reinforcing bracket 26, and FIG. 6 is a right side view schematically showing the reinforcing bracket 26. As shown in FIG.

  The reinforcing metal fitting 26 includes a main body portion 26a having a rectangular plate shape that is long in the front and rear direction and short in the left and right sides, and side portions 26b and 26b that protrude upward from the left and right edge portions of the main body portion 26a. At the upper edge portion of the right side surface portion 26b, a protruding portion 26d protruding rightward from the rear end portion is provided. At the upper edge portion of the left side surface portion 26b, a protruding portion 26d protruding leftward from the rear end portion is provided.

  An insertion hole 26e into which the screw 200 is inserted is provided at the rear end portion of each protruding portion 26d and the main body portion 26a. One or a plurality of holes 26c are provided in the central portion of the main body portion 26a. The number of the holes 26c is appropriately determined according to specifications, and the holes 26c may not be provided. When the cut piece pushed into the support box 2 through the base through hole 24 is clogged around the reinforcing metal fitting 26, the user removes the bottom cover 3, inserts a rod or the like into the hole 26c, and clogs. Can be eliminated.

  The reinforcing metal fitting 26 is arranged so that the position of the insertion hole 26 e is aligned with the position of the insertion hole 25 of the support box 2, and screws 200 are inserted into both the insertion holes 25 and 26 e and fixed to the support box 2.

  The strength of the support box 2 can be improved by the reinforcing metal fitting 26. In addition, the side part 26b and the protrusion part 26d are bend | folded with respect to the main-body part 26a, and the intensity | strength of the reinforcement metal fitting 26 is improving compared with the case where the reinforcement metal fitting 26 is flat.

  FIG. 7 is a plan view schematically showing the bottom cover 3. A plurality of ribs 3 b are provided on the upper surface of the bottom lid 3. A second discharge recess 3 a for discharging a cut piece is formed at the left end portion of the front edge of the bottom lid 3. The second discharge recess 3a penetrates vertically. The position of the second discharge recess 3a corresponds to the first discharge recess 2a.

  As shown in FIG. 1, a removable cap 9 is provided in the first discharge recess 2a and the second discharge recess 3a. The user can remove the cap 9 as needed and discharge the cut pieces accumulated in the base 1 to the outside.

  FIG. 8 is a plan view schematically showing the support box 2, and FIG. 9 is a partially enlarged perspective view schematically showing the locking portion 7. In the rear part of the upper surface of the support box 2, pin holes 28 for inserting pins (not shown) are provided in both left and right ends. Three locking portions 7, 7, 7 are arranged in front and rear on the right side surface portion of the support box 2. The locking part 7 can move up and down, and when it moves upward, the locking part 7 protrudes above the upper surface part of the support box 2.

  The left and right positions of the three locking portions 7 are different, the locking portion 7 located on the frontmost side is positioned on the leftmost side, and the locking portion 7 positioned on the rearmost side is positioned on the rightmost side. The three locking portions 7 are respectively arranged at the left and right positions according to the three standards of the paper to be punched. When the locking portion 7 according to the standard of the paper to be punched is pulled up to lock the paper to the locking portion 7 and a hole is punched in the paper, the hole located on the rightmost side of the paper and the right side 504 of the paper The dimension between and becomes a dimension according to the standard of the paper. In addition, the number of the latching | locking parts 7 is not limited to three, You may provide two or less or four or more.

10 is a right side cross-sectional view schematically showing the punch 100 with the cover 10a omitted, and FIG. 11 is a plan view schematically showing the die plate 30. As shown in FIG. A rectangular shallow recess 27 extending left and right is provided on the rear edge portion of the upper surface portion of the support box 2. As shown in FIGS. 8 and 10, the insertion hole 25, the base through hole 24, and the pin hole 28 are provided on the bottom surface of the recess 27.

  In the recess 27, a die plate 30 (first metal plate) made of a metal member is provided. As shown in FIG. 11, the die plate 30 has a rectangular shape that is long on the left and right along the recess 27 and short on the front and back. The die plate 30 is provided with a plurality of insertion holes 30b, 30b, ..., 30b corresponding to the insertion holes 25 provided in the support box 2. The die plate 30 is provided with a plurality of quadrangular first through holes 30 a, 30 a, 30 a,..., 30 a corresponding to the base through holes 24, and two pin holes provided in the support box 2. Two pin holes 30c and 30c corresponding to 28 and 28 are provided.

  As shown in FIG. 10, a spacer 31 is placed on the upper surface of the die plate 30. FIG. 12 is a plan view schematically showing the spacer 31. As shown in FIG. 12, the spacer 31 has a rectangular shape that is long in the left and right direction and short in the front and back direction. The front-rear dimension of the spacer 31 is shorter than the front-rear dimension of the die plate 30. The spacer 31 is placed on the rear part of the die plate 30 and is not located above the first through hole 30a. The spacer 31 is provided with a plurality of insertion holes 31 a arranged at positions corresponding to the positions of the insertion holes 30 b of the die plate 30, and two pins corresponding to the two pin holes 30 c and 30 c of the die plate 30. Holes 31b and 31b are provided.

  As shown in FIG. 10, a guide plate 32 (second metal plate) is placed on the upper surface of the spacer 31. A gap for inserting an object such as paper is secured between the guide plate 32 and the spacer 31. 13 is a plan view schematically illustrating the guide plate 32, FIG. 14 is a rear view schematically illustrating the guide plate 32, and FIG. 15 is a right side view schematically illustrating the guide plate 32. The guide plate 32 includes a main body portion 321 that has a rectangular shape that is long in the right and left direction and short in the front and rear directions, and a rear surface portion 322 that rises substantially perpendicularly from the rear edge portion of the main body portion 321. The guide plate 32 is L-shaped when viewed from the left side.

  The front / rear / left / right dimensions of the main body 321 are substantially the same as the front / rear / left / right dimensions of the die plate 30. The main body 321 is provided with a plurality of insertion holes 32b, 32b,..., 32b corresponding to the insertion holes 31a of the spacer 31, and two pins corresponding to the two pin holes 31b, 31b of the spacer 31. Holes 32c and 32c are provided. The main body 321 has a plurality of quadrangular second through holes 32a, 32a,..., 32a (through holes) arranged in parallel in the left-right direction.

  A rectangular through hole 322a that is long on the left and right is provided at the center in the left-right direction of the rear surface portion 322. The left and right sides of the through-hole 322a are formed by cutting and raising the rear surface portion 322, and spring locking portions 323 and 324 for locking a spring 36 described later are provided. The left spring locking portion 324 is L-shaped in plan view, and includes a front protruding portion 324a that protrudes forward from the rear surface, and a right protruding portion 324b that protrudes right from the protruding end of the front protruding portion 324a. Is provided. The right spring locking portion 323 has an inverted L shape in plan view, and has a front protruding portion 323a protruding forward from the rear surface, and a left protruding portion 323b protruding leftward from the protruding end of the front protruding portion 323a. With.

  The plurality of second through holes 32a correspond to the first through holes 30a, and are located at positions where the center points of the second through holes 32a coincide with the center points of the first through holes 30a (hereinafter referred to as reference positions). A corresponding through-hole 131 having a front / rear / left / right dimension that is the same as or larger than the front / rear / left / right dimension of the first through-hole 30a, and is arranged at a position different from the reference position or smaller than the corresponding through-hole 131 A non-corresponding through-hole 132 having a front-rear left-right dimension larger than the front-rear left-right dimension of the through-hole 30a.

FIG. 16 is an enlarged plan view schematically showing the corresponding through hole 131 and the non-corresponding through hole 132. FIG. 16A shows a non-corresponding through hole 132 disposed at a position that does not correspond to the corresponding through hole 131 and the first through hole 30a, and FIG. 16B shows a shape that does not correspond to the corresponding through hole 131 and the first through hole 30a. A non-corresponding through hole 132 having In FIG. 16A and FIG. 16B, a broken line indicates a corresponding through hole (virtual corresponding through hole) 131 a when it is assumed that the corresponding through hole 131 is arranged instead of the non-corresponding through hole 132.

  A case will be described in which the plurality of second through holes 32a include corresponding through holes 131 and non-corresponding through holes 132 arranged at positions different from the reference position. As shown in FIG. 16A, among the plurality of second through holes 32a, 32a,..., 32a arranged in the left-right direction, the two second through holes 32a, 32a located at the left end and the right end are located. The second through hole 32a (corresponding through hole 131) excluding the two second through holes 32a and 32a is disposed at a position corresponding to the reference position, and is larger than the front and rear left and right dimensions of the first through hole 30a. Has left and right dimensions. The two second through holes 32 a located at the left end and the two second through holes 32 a located at the right end are non-corresponding through holes 132.

  The front / rear and left / right dimensions of the two non-corresponding through holes 132 located at the left end are substantially the same as the front / rear and left / right dimensions of the corresponding through hole 131. The left non-corresponding through hole 132 is arranged at a position deviated to the rear side and the left side with respect to the reference position. Further, the right non-corresponding through-hole 132 is arranged at a position deviated to the rear side and the right side with respect to the reference position. That is, the two non-corresponding through holes 132 located at the left end are arranged at positions different from the reference position.

  The front / rear and left / right dimensions of the two non-corresponding through holes 132 located at the right end are substantially the same as the front / rear and left / right dimensions of the corresponding through hole 131. The left non-corresponding through-hole 132 is disposed at a position deviated to the front side and the right side with respect to the reference position. Further, the right non-corresponding through-hole 132 is disposed at a position deviated to the front side and the right side with respect to the reference position. That is, the two non-corresponding through holes 132 positioned at the right end are arranged at positions different from the reference position.

  The left and right dimensions and the front and rear dimensions of the second through hole 32a are designed to be larger than the first through hole 30a by a dimension D. The dimension D is within a tolerance range in which the drilling blade 40 can be inserted. The dimension in which the non-corresponding through hole 132 is deviated from the reference position is substantially half of the dimension D, and the non-corresponding through hole 132 is deviated within the allowable error range. The left and right dimensions and the front and rear dimensions of the second through hole 32a may be designed to be the same as the left and right dimensions and the front and rear dimensions of the first through hole 30a.

  A case will be described in which the plurality of second through holes 32a include corresponding through holes 131 and non-corresponding through holes 132 having front / rear / left / right dimensions smaller than front / rear / left / right dimensions of the corresponding through holes 131. As shown in FIG. 16B, out of the plurality of second through holes 32a arranged in the left-right direction, two second through holes 32a located at the left end and two second through holes 32a located at the right end are excluded. The second through hole 132 (corresponding through hole 131) is disposed at a position corresponding to the reference position, and has a front / rear / left / right dimension larger than the front / rear / left / right dimension of the first through hole 30a. The front / rear / left / right dimensions of the corresponding through hole 131 may be designed to be the same as the front / rear / left / right dimension of the first through hole 30a. The two second through holes 32 a located at the left end and the two second through holes 32 a located at the right end are non-corresponding through holes 132.

  Of the two non-corresponding through holes 132 located at the left end, the front and rear and left and right dimensions of the left non-corresponding through hole 132 are smaller than the front and rear left and right dimensions of the corresponding through hole 131, and the left non-corresponding through hole 132 is virtually corresponding It is located in the left front part of the region of the through hole 131a. The front-rear and left-right dimensions of the right non-corresponding through-hole 132 are smaller than the front-rear left-right dimensions of the corresponding through-hole 131, and the right non-corresponding through-hole 132 is located at the right rear portion of the region of the virtual corresponding through-hole 131a.

Of the two non-corresponding through holes 132 located at the right end, the front and rear and left and right dimensions of the left non-corresponding through hole 132 are smaller than the front and rear left and right dimensions of the corresponding through hole 131, and the left non-corresponding through hole 132 is virtually corresponding It is located in the left rear part of the region of the through hole 131a. The front-rear and left-right dimensions of the right non-corresponding through hole 132 are smaller than the front-rear left-right dimensions of the corresponding through-hole 131, and the right non-corresponding through hole 132 is located in the front right part of the virtual corresponding through-hole 131a. The front-rear and left-right dimensions of the non-corresponding through hole 132 are larger than those of the first through hole 30a.

  As will be described later, the drilling blade 40 includes a plurality of blade portions 42 that are inserted into the second through holes 32a. The blade portion 42 has a rectangular parallelepiped shape extending vertically, and the cross-sectional shape thereof is a quadrangle corresponding to the base through hole 24, the first through hole 30a, and the second through hole 32a. In each case where the non-corresponding through hole 132 is arranged at a position non-corresponding to the first through hole 30a or has a front / rear left / right dimension smaller than that of the corresponding through hole 131, each blade portion 42 is inserted into the second through hole. When inserted into 32a, the non-corresponding through hole 132 functions as a positioning portion, and the blade portion 42 is positioned with respect to the first through hole 30a. One or three or more non-corresponding through holes 132 may be provided at the left end and / or the right end.

  Further, the second through hole 32a located in the center may be used as the non-corresponding through hole 132. In this case, since the blade portion 42 located at the center is further positioned, the drilling blade 40 is positioned at three points, the left and right ends and the center. Therefore, the warp of the drilling blade 40 is suppressed, and the blade portion 42 is more smoothly inserted into the second through hole 32a and the first through hole 30a. The number of the non-corresponding through-holes 132 located in the central portion may be single or plural. Moreover, the non-corresponding through-holes 132 are only required to be spaced apart in the left-right direction, and may be disposed at any two locations of the left end portion, the right end portion, and the central portion, for example. Moreover, you may arrange | position separately in places other than a left end part, a right end part, and a center part.

  17 is a plan perspective view of the punch 100 as seen through the inside of the cover 10a, FIG. 18 is a partially enlarged perspective view schematically showing the configuration near the left bearing 34 and the right bearing 33, and FIG. FIG. 20 is a plan view schematically showing the left bearing 34. 18A shows the configuration of the left bearing 34 and FIG. 18B shows the configuration near the right bearing 33.

  As shown in FIG. 17, on the guide plate 32, two left bearings 34, 34 and two right bearings 33, 33 are alternately arranged in the left-right direction. As shown in FIG. 19, the left bearing 34 protrudes upward from a rectangular fixing plate 34 a that is long before and after being fixed to the guide plate 32 and a right edge portion of the fixing plate 34 a, and supports a pivot 35 that will be described later. Supporting plate 34c. As shown in FIG. 20, the fixing plate 34a is provided with two insertion holes 34b and 34b arranged side by side. A pivot hole 34d for inserting the pivot 35 is provided at the center of the support plate 34c. A front upper portion of the support plate 34c extends forward from the fixed plate 34a, and a guide recess 34e for guiding the drilling blade 40 is provided on the front upper portion. The bottom of the guide recess 34e is located on the upper side, and the opening of the guide recess 34e is located on the lower side.

  Since the right bearing 33 has the same configuration as the left bearing 34 except that the support plate 34c protrudes from the left edge portion of the fixed plate 34a, detailed description thereof is omitted.

  As shown in FIG. 17, the pivot 35 is disposed between the right bearing 33 and the left bearing 34, and the left and right ends of the pivot 35 are inserted into the pivot holes 34 d of the right bearing 33 and the left bearing 34. The pivot 35 is supported by the right bearing 33 and the left bearing 34 so as to be rotatable about the axis. The lever 6 is provided on the right side of the left bearing 34 and on the left side of the right bearing 33, respectively.

FIG. 21 is a side view schematically showing the lever 6. Two attachment holes 6 a and 6 a for attaching the handle 5 are provided at the front end of the lever 6. A spring receiving portion 6 d (upper limit stopper) is provided at the rear end portion of the lever 6. The upper portion of the spring receiving portion 6d protrudes upward. In the middle part of the lever 6, there are provided a blade pressing member 6 b for pressing the drilling blade 40 and an insertion portion 6 c. The blade retainer 6b is located in front of the insertion portion 6c. The blade holder 6b protrudes downward. The insertion part 6c protrudes below the blade presser 6b. A pivot hole 6e is formed in the lever 6 between the insertion portion 6c and the spring receiving portion 6d.

  As shown in FIG. 18A, the drilling blade 40 is inserted into the guide recesses 34 e of the right bearing 33 and the left bearing 34. FIG. 22 is a front view schematically showing the drilling blade 40. The drilling blade 40 includes a rectangular base 41 that is long in the left and right and short in the vertical direction, and a plurality of blade portions 42 that protrude downward from the lower edge portion of the base 41 and are arranged in the left and right. The number of the plurality of blade portions 42 corresponds to the number of the base through hole 24, the first through hole 30a, or the second through hole 32a. Four lever holes 43, 43, 43, 43 are formed in the base 41. The position of the lever hole 43 corresponds to the position of the lever 6.

  The base 41 is formed with two concave portions 44 and 44 that are separated in the left-right direction. The concave portion 44 is located between two adjacent blade portions 42. As shown in FIG. 17, a lower limit stopper 37 is provided below the recess 44. The lower limit stopper 37 is provided on the guide plate 32 and is inserted into the recess 44 when the drilling blade 40 is lowered. When the lower limit stopper 37 comes into contact with the bottom of the recess 44, the lowering of the drilling blade 40 is stopped. In other words, the lower limit stopper 37 determines the lower limit position of the drilling blade 40.

  As shown in FIG. 18A, the insertion portion 6c is inserted into the lever hole 43, and the pivot shaft 35 is pivotally inserted into the pivot hole 6e. The blade retainer 6b is located above the drilling blade 40.

  As shown in FIG. 17, the right spring locking portion 323 is located between the left bearing 34 and the right bearing 33 that are located on the right side of the center in the left-right direction. A spring 36 is provided on the pivot 35 between the spring locking portion 323 and the left bearing 34. The lever 6 is located between the spring 36 and the left bearing 34. As shown in FIGS. 17 and 18A, the spring 36 has a coil shape, and one end of the spring 36 is locked to the lower side of the left protrusion 323b. The other end of the spring 36 is locked to the upper side of the spring receiving portion 6d. The spring 36 biases the spring receiving portion 6d downward.

  As shown in FIG. 17, the left spring locking portion 324 is located between the left bearing 34 and the right bearing 33 that are located on the left side of the center in the left-right direction. A spring 36 is provided on the pivot 35 between the spring locking portion 324 and the right bearing 33. The lever 6 is located between the spring 36 and the right bearing 33. As shown in FIG. 17, the spring 36 has a coil shape, and one end of the spring 36 is locked to the lower side of the right protrusion 324b. The other end of the spring 36 is locked to the upper side of the spring receiving portion 6d. The spring 36 biases the spring receiving portion 6d downward.

  The spring receiving portion 6d is biased downward by the biasing force of the spring 36, and the insertion portion 6c pushes up the drilling blade 40. As shown in FIG. 10, the spring receiving portion 6d abuts on the guide plate 32, the front end portion of the lever 6 and the handle 5 stop at the upper position, and the drilling blade 40 also stops at the upper limit position. When a downward force is applied to the handle 5 against the urging force of the spring 36, the front end portion of the lever 6 is lowered and the insertion portion 6c pushes down the drilling blade 40.

  As shown in FIG. 17, the lifting mechanism 10 includes a lock 38 that holds the handle 5 in a lowered state. The lock 38 includes an operation unit 38a and a moving plate 38b. The operation portion 38a is disposed in the through hole 322a (see FIG. 14) of the guide plate 32. The moving plate 38 b extends to the left and right, and is located on the front side of the rear surface portion 322 of the guide plate 32. The moving plate 38b and the operation unit 38a are connected, and the moving plate 38b moves to the left and right by moving the operation unit 38a to the left and right.

  The left end of the moving plate 38b is located in the vicinity of the second lever 6 from the left. A protruding plate 38c protruding forward is provided at the left end of the moving plate 38b. As the moving plate 38b moves left and right, the protruding plate 38c also moves left and right. As shown in FIG. 18B, when the operating portion 38a is operated with the lever 6 tilted downward, and the protruding plate 38c is positioned below the spring receiving portion 6d, the spring receiving portion 6d is moved to the protruding plate 38c. Abut. For this reason, the lever 6 is biased in the direction of rotating upward by the biasing force of the spring 36, but the lever 6 cannot be rotated upward by the protruding plate 38c, and the tilted state is maintained. At the time of storing, the lock 38 can be operated to keep the lever 6 in a tilted state.

  When one lever 6 is separated from the protruding plate 38c by a long distance, even if the rotation of the other lever 6 is stopped by the protruding plate 38c, the one lever 6 is more than the other lever 6 by the biasing force of the spring 36. Is slightly above, and the handle 5 is not parallel. Therefore, it becomes difficult to store the punch 100, and the appearance is uncomfortable. In the embodiment, the protruding plate 38c is located in the vicinity of the second lever 6 from the left, in other words, in the vicinity of the one lever 6 located on the center side. In comparison, the distance to the other lever 6 is shortened, and the other lever 6 can be prevented from being positioned upward.

  Next, the handle 5 will be described. As shown in FIG. 1, a handle 5 is attached to the front end portions of the four levers 6. As shown in FIG. 10, the handle 5 connects the front end portions of the four levers 6, covers the handle base 50 made of a metal member, and covers the upper side of the handle base 50, and the upper cover made of a resin member. -51 and a lower cover 52 that covers the lower side of the handle base 50 and is made of a resin member.

  23 is a plan view schematically illustrating the handle base 50, FIG. 24 is a rear view schematically illustrating the handle base 50, FIG. 25 is a right side view schematically illustrating the handle base 50, and FIG. FIG. 27 is a cross-sectional view taken along line XXVII-XXVII shown in FIG. 23. FIG. 27 is a cross-sectional view taken along line XXVI-XXVI.

  The handle base 50 has a hexagonal plate portion 50a having a hexagonal shape. The hexagonal plate part 50a has a trapezoidal shape in which a front right part and a front left part of a rectangle that is long on the left and right are cut. That is, the hexagonal plate portion 50a is arranged at a rear side 501 extending in the left-right direction and a position spaced forward from the rear side 501. The position in the left-right direction is the same as the position of the central portion of the rear side 501. A front side 502 shorter than the rear side 501 and parallel to the rear side 501, a left side 503 and a right side 504 projecting forward from the left and right ends of the rear side 501, a front end part of the left side 503, and a left end part of the front side 502 And a right inclined side 506 connecting the front end of the right side 504 and the right end of the front side 502.

  Note that the protruding distances of the left side 503 and the right side 504 are substantially the same, and are shorter than the separation distance between the front side 502 and the rear side 501. The front-rear width of the central part of the hexagonal plate part 50a is longer than the widths of the left and right parts. Two base holes 50h and 50h penetrating vertically are arranged side by side at the central portion of the hexagonal plate portion 50a.

  The peripheral wall 50b protrudes downward from each of the front side 502, the rear side 501, the left side 503, the right side 504, the left inclined side 505, and the right inclined side 506. As shown in FIGS. 23 and 26, four mounting plates 50d, 50d, 50d, and 50d protrude downward from the central portion of the hexagonal plate portion 50a. The two mounting plates 50d are arranged in the front-rear direction at the left portion of the hexagonal plate portion 50a, and the two mounting plates 50d are arranged in the front-rear direction at the right portion of the hexagonal plate portion 50a. The mounting plate 50d is formed by cutting and raising a part of the hexagonal plate portion 50a in a semicircular shape.

As shown in FIG. 25, a long hole 50 c that is long in the vertical direction is juxtaposed on the left and right in the peripheral wall portion 50 b that continues to the right side 504. Similarly, a long hole 50c that is long in the vertical direction is arranged in parallel on the left and right in the peripheral wall portion 50b that continues to the left side 503. As shown in FIG. 27, the mounting plate 50d is provided with long holes 50e that are long in the vertical direction and arranged in parallel on the left and right.

  As shown in FIG. 24, two lever holes 50f are juxtaposed on the left and right at the central portion of the peripheral wall portion 50b that continues to the rear side 501. A lever opening is provided on each of the left side and the right side of the peripheral wall part 50b that continues to the rear side 501. As shown in FIG. 26, a mounting plate 50d is provided at a position corresponding to the right edge or the left edge of the lever hole 50f. The lever 6 is inserted into the lever hole 50f and the lever opening. When the lever 6 is inserted into the lever hole 50f, the mounting plate 50d also functions as a guide for guiding the lever 6. When the lever 6 is inserted into the lever opening, each of the peripheral wall portions 50b connected to the right side 504 and the left side 503 also functions as a guide for guiding the lever 6.

  FIG. 28 is a partially enlarged perspective view showing a connecting portion between the lever 6 and the mounting plate 50d or the peripheral wall portion 50b. 28A shows a connecting portion between the lever 6 and the mounting plate 50d, and FIG. 28B shows a connecting portion between the lever 6 and the peripheral wall portion 50b. As described above, two attachment holes are provided in the front end portion of the lever 6 (see FIG. 21).

  As shown in FIG. 28A, the position of the mounting hole 6a of the lever 6 and the position of the long hole 50e of the mounting plate 50d are aligned, the screw 200 is inserted, the nut 201 is screwed into the screw 200, and the lever 6 and the mounting plate 50d are connected. 28B, the position of the mounting hole 6a of the lever 6 and the position of the long hole 50c of the peripheral wall 50b are aligned, the screw 200 is inserted, the nut 201 is screwed into the screw 200, and the lever 6 and the peripheral wall part 50b are connected. The vertical position of the screw 200 can be adjusted by the long holes 50c and 50e.

  29 is a plan view schematically showing the upper cover 51, FIG. 30 is a right side view schematically showing the upper cover 51, and FIG. 31 is a rear view schematically showing the upper cover 51. The upper cover 51 includes an upper surface portion 51a having a hexagonal shape following the mounting base, and an outer peripheral wall 51b protruding downward from the periphery of the upper surface portion 51a. In the front portion of the upper surface portion 51a, a horizontally-long rectangular recess 51e is formed. In the recess 51e, two insertion holes 51f and 51f for inserting the screw 200 are arranged side by side. The positions of the two insertion holes 51f correspond to the positions of the two base holes 50h described above.

  An inner peripheral wall 51c is provided around the outer peripheral wall 51b. The inner peripheral wall 51c protrudes below the outer peripheral wall 51b. As shown in FIG. 30, a tongue piece 51 d protrudes downward from the right end portion of the upper cover 51. The tongue piece 51d protrudes below the inner peripheral wall 51c. The left end portion of the upper cover 51 is also provided with a tongue piece 51d as in the right end portion.

  As shown in FIG. 31, four half holes 51g, 51g, 51g, 51g for inserting the lever 6 are arranged side by side on the rear outer peripheral wall 51b. The four half holes 51g are arranged at positions corresponding to the two lever holes 50f and the two lever openings.

  32 is a plan view schematically showing the lower cover 52, FIG. 33 is a right side view schematically showing the lower cover 52, and FIG. 34 is a rear view schematically showing the lower cover 52. The lower cover 52 includes a lower surface portion 52a having a hexagonal shape following the mounting base, and an outer peripheral wall 52b protruding downward from the periphery of the lower surface portion 52a. On the lower surface portion 52a, bottomed cylindrical screwing bosses 52e and 52e are respectively provided at positions corresponding to the two insertion holes 51f and 51f of the upper cover 51.

Inside the outer peripheral wall 52b, a plurality of inner walls 52c are provided on the lower surface portion 52a along the outer peripheral wall 52b. As shown in FIG. 33, a tongue piece 52d protruding downward is provided between the outer peripheral wall 52b and the inner wall 52c at the right end portion of the lower surface portion 52a. The lower end of the tongue piece 52d is located between the lower ends of the outer peripheral wall 52b and the inner wall 52c. Note that a tongue piece 52d is also provided at the left end portion of the lower surface portion 52a, similarly to the right end portion.

  As shown in FIG. 34, on the outer peripheral wall 52b on the rear side, four half holes 52f are provided at positions corresponding to the four half holes 51g of the upper cover 51, respectively. The direction of the half hole 52 f of the lower cover 52 is opposite to the half hole 51 g of the upper cover 51. The upper cover 51 and the lower cover 52 cover the handle base 50 from above and below.

  The inner peripheral wall 51c of the upper cover 51 and the inner wall 52c of the lower cover 52 are fitted together, and the tongue pieces 51d and 52d of the upper cover 51 and the lower cover 52 are fitted together. A tapping screw (not shown) is inserted into the insertion hole 51f from above, threaded into the screwing boss 52e through the base hole 50h, and the upper cover 51 and the lower cover 52 are connected.

  The upper and lower half holes 51g and 52f are joined together to form a hole for inserting the lever 6. The lever 6 is inserted into the hole formed by the half holes 51g and 52f, inserted into the lever hole 50f or the lever opening 50g, and fixed to the mounting base 50.

  Since the upper cover 51 and the lower cover 52 made of a resin member cover the handle base 50 made of a metal member, the user's hand is unlikely to hurt when the handle 5 is operated. Further, by using the inlay fitting and screwing boss 52e, even if a force acts on the handle 5 in the left-right or front-rear direction, it is difficult for the force to act on the tapping screw, and the tapping screw can be prevented from loosening. it can.

  Since the four levers 6 are connected by the handle base 50, the load applied to the handle 5 can be applied to the four levers 6 on average. In addition, the handle 5 has a central portion that is long in the front-rear direction and a left-right portion that is short in the front-rear direction. Therefore, the user can easily apply a load to the central portion. It is easy to make a uniform hole in an object such as paper by making it uniform.

  When a load is applied to the left and right portions of the handle 5, the load acting on the handle 5, the lever 6, and the punching blade 40 is biased, and it is difficult to drill a well-shaped hole in an object such as paper. In order to make a hole, it is necessary to apply a larger load to the handle 5.

  When manufacturing the punch 100, a pin (not shown) is erected in the pin hole 28 provided in the support box 2. Then, pins are inserted into the pin holes 30 c of the die plate 30, the die plate 30 is positioned with respect to the support box 2, and disposed on the support box 2. Similarly, a pin is inserted into the pin hole 31 b of the spacer 31, the spacer 31 is positioned with respect to the die plate 30 and the support box 2, and arranged on the die plate 30. Similarly, a pin is inserted into the pin hole 32 c of the guide plate 32, the guide plate 32 is positioned with respect to the spacer 31, the die plate 30 and the support box 2, and arranged on the spacer 31.

  Then, the screw 200 is inserted into each of the insertion holes 32 b, 31 a, 30 b and the bolts are screwed together to fix the guide plate 32, the spacer 31 and the die plate 30 to the support box 2. Since the positioning is performed by the pins, the positions of the base through hole 24, the first through hole 30a, and the second through hole 32a are aligned, and the base through hole 24, the first through hole 30a, and the second through hole 32a are formed. Each blade portion 42 of the blade 40 can be smoothly inserted, and a well-shaped hole can be formed in an object such as paper.

In the punch 100 according to the embodiment, the base 1 is made of a resin member, and the reinforcing metal fitting 26 and the ribs 21, 22, and 3 b are further provided, thereby ensuring strength and reducing the weight. Further, by providing the short rib 22 having a shorter vertical width than the long rib 21, a space for moving the cut piece of the object cut by the drilling blade 40 is secured in the support box 2, and the cut piece is discharged. Make it easier to do.

  Further, the plurality of locking portions 7 that can protrude upward are respectively arranged at different sizes of the plurality of objects, for example, at positions corresponding to different paper standards. By bringing the paper to be punched into contact with the engaging portion 7 corresponding to the paper standard, the dimension between the edge of the paper and the hole is made the dimension corresponding to the paper standard. Can do.

  By bending the longitudinal edge portion of the guide plate 32, the guide plate 32 is prevented from being bent by the force generated when the drilling blade 40 is pushed into the object. Further, when the blade portion 42 is inserted into the non-corresponding through hole 132, positioning with respect to the drilling blade 40 is performed, and each blade portion 42 of the drilling blade 40 is smoothly inserted into the first through hole 30a of the die plate 30. .

  In addition, the plurality of non-corresponding through holes 132 are separated in the left-right direction (the direction in which the second through holes 32a are arranged). It is possible to prevent displacement in the direction intersecting with. A guide plate 32 for guiding an object such as paper to the lower side of the drilling blade 40 is provided on the upper surface of the support box 2, and a gap for inserting paper is formed between the guide plate 32 and the die plate 30. The Providing the lower limit stopper 37 prevents the drilling blade 40 from colliding with the guide plate 32 and reducing the size of the gap.

  When the upper limit stopper is configured to come into contact with the drilling blade 40, the contact causes the drilling blade 40 to be bent or the contact portion of the drilling blade 40 to be deformed, so that the drilling blade 40 moves smoothly. May be disturbed. In the embodiment, the upper limit stopper, that is, the spring receiving portion 6 d of the lever 6 abuts on the guide plate 32 provided in the support box 2, and thus does not affect the drilling blade 40. When the support box 2 and the guide plate 32 are integrated, the spring receiving portion comes into contact with the support box 2.

  When the user operates the end of the handle 5, a biased load acts on the drilling blade 40. Therefore, in the embodiment, when a hole is formed in the object by making the vertical width of the central portion of the handle 5 larger than the vertical width of the both ends, the user operates the central portion of the handle 5 to puncture the hole. The load acting on the blade 40 can be made uniform. Further, the plurality of levers 6 are integrated by the handle 5 so that the load acting on each lever 6 is made uniform. As a result, the bending of the handle 5 can be prevented, the load acting on the drilling blade 40 can be made uniform, and the drilling blade 40 can be prevented from being deformed and lowered.

  In the embodiment, the guide plate 32 is formed in an L shape, but the spacer 31 or the die plate 30 may be formed in an L shape. That is, the rear longitudinal edges of all of the die plate 30, the spacer 31, and the guide plate 32 may be bent, or any one or two rear longitudinal edges may be bent. In this case, it is possible to prevent the die plate 30, the spacer 31, and / or the guide plate 32 from being bent by the force generated when the drilling blade 40 is pushed into the object.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

1 base 2 support box 21 long rib (reinforcement part, rib, first rib)
22 Short rib (reinforcement part, rib, second rib)
24 Base through hole (hole)
26 Reinforcing metal fittings (reinforcing part, metal fittings)
5 Handle 6 Lever 6d Spring receiver (upper limit stopper)
7 Locking portion 10 Lifting mechanism 30 Die plate (first metal plate)
30a First through hole (through hole)
32 Guide plate (2nd metal plate)
32a Second through hole (through hole)
35 Pivot 37 Lower limit stopper 40 Drilling blade 42 Blade portion 44 Recessed portion 100 Punch 131 Corresponding through hole 131a Virtual corresponding through hole 132 Non-corresponding through hole

Claims (12)

In a punch comprising a base in which a hole is formed, a drilling blade disposed above the hole, and an elevating mechanism for raising and lowering the drilling blade,
The base is
A support box configured by a resin member and supporting the lifting mechanism;
A punch comprising: a reinforcing portion that reinforces the support box. The punch according to claim 1, wherein the reinforcing portion includes a metal fitting or a rib arranged in the support box. A plurality of the ribs hang downward from the upper surface of the support box;
The plurality of ribs are
A first rib;
The punch according to claim 2, further comprising: a second rib shorter than the first rib. A plurality of locking portions for locking an object can be protruded above the upper surface portion of the support box, and are arranged side by side along the side surface of the support box,
The punch according to any one of claims 1 to 3, wherein the plurality of locking portions are arranged at different positions in a direction intersecting the side surface. A metal plate arranged on the lower side of the lifting mechanism is provided on the upper surface of the support box,
The punch according to any one of claims 1 to 4, wherein a longitudinal edge portion of the metal plate is bent. The drilling blade has a plurality of blade portions arranged side by side,
A plurality of the metal plates including a first metal plate and a second metal plate located above the first metal plate,
Each of the first metal plate and the second metal plate has a plurality of through holes corresponding to the plurality of blade portions,
The plurality of through holes in the second metal plate are
A corresponding through hole disposed at a reference position corresponding to the position of the through hole of the first metal plate and having the same or larger dimension as the through hole of the first metal plate;
The punch according to claim 5, comprising a non-corresponding through hole that is arranged at a position different from the reference position or has a dimension smaller than that of the corresponding through hole. The plurality of through holes in the second metal plate are aligned,
The punch according to claim 6, wherein the plurality of non-corresponding through holes are located at both ends in the arrangement direction. Furthermore, the said non-corresponding through-hole is arrange | positioned in the center part in the said arrangement direction. The punch of Claim 7 characterized by the above-mentioned. On the upper side of the support box, a lower limit stopper for determining a lower limit position of the drilling blade is provided,
The punch according to any one of claims 1 to 8, wherein a recess into which the lower limit stopper is inserted is formed in the drilling blade. The lifting mechanism is
A laterally extending pivot,
The pivot passes through, and has a lever that rotates about the pivot;
A handle is provided at one end of the lever,
The middle part of the lever between the handle and the pivot is connected to the drilling blade,
The punch according to any one of claims 1 to 9, wherein an upper limit stopper for determining an upper limit position of the drilling blade is provided at the other end of the lever. The punch according to claim 10, wherein the handle has a horizontally long plate shape in which a vertical width of both end portions is shorter than a vertical width of a central portion. A plurality of levers;
The punch according to claim 10 or 11, wherein the handle is connected to the plurality of levers.

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