JP4626314B2 - Punch bottom cover - Google Patents

Description

  The present invention relates to a bottom cover of a punch, and more particularly, to a bottom cover that prevents leakage of paper removal waste.

A punch for processing a punch hole in a paper such as a document has a bottom cover attached to the bottom surface of a base plate having a die hole so as to store a circular punching residue of the paper in the space between the base plate and the bottom cover. Also known is a hinge structure in which the bottom cover can be folded back and forth so that a part of the bottom cover can be opened so that the scrap can be discarded without removing the bottom cover from the base plate (for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-1698 (FIGS. 12, 13, and 14)

  The bottom cover of the punch is generally made of resin, and a claw for locking to the bottom surface of the base plate is integrally formed. A hook mold is formed by injection molding. Since the slit for removing the sheet is formed, the sheet removal residue may spill out from the slit. Further, in the hinge-type bottom cover, when a part of the bottom cover is opened and the scrap is to be discarded, the scrap may be caught by a claw or other boss, and may remain. Furthermore, since the hinge-type bottom cover has a slight gap between the front and rear side portions connected by the hinge, there is a case where a scrap is spilled out from the gap.

  Therefore, a technical problem to be solved in order to prevent leakage of the dregs is generated, and the present invention aims to solve the above problem.

  The present invention is proposed to achieve the above object, and is a resin bottom cover for receiving punch punch debris, comprising a front cover portion, a hinge portion, and a rear cover portion, and is formed in the peripheral portion. In the bottom cover of the punch, which is attached to the bottom surface of the base plate of the punch by the locking claw and can open and close the front cover portion or the rear cover portion. The punch bottom cover is provided with a pair of left and right partitions that partition the locking claws.

  Also provided is a punch bottom cover provided with lateral barrier ribs extending outwardly from the opposite end portions of the front cover partition and the rear cover partition along the hinges and extending continuously to the side wall of the bottom cover. To do.

  Further, the present invention provides a punch bottom cover in which one or a plurality of vertical ribs are provided on the opposing surfaces of the transverse partition walls that face each other in the front-rear direction.

  In the bottom cover of the punch of the present invention, the central punching waste container and the latching claws and bosses on the left and right edges are partitioned by a partition wall, so that the punching waste of the paper falls to the outside from the slits around the latching claws. There is nothing.

  In addition, by connecting each side wall of the front cover partition and the rear cover partition opposite to each other with a lateral partition, the front cover partition and the rear cover partition are removed from the gap. The risk of spilling is further reduced.

  Further, by providing one or a plurality of vertical ribs on the opposing surfaces of the horizontal partition walls that are close to each other in the front-rear direction, even if a punched residue enters between the opposing horizontal partition walls, the vertical ribs are caught. Leak leakage can be almost completely prevented.

  In this invention, the inside of the bottom cover of the punch is partitioned by a pair of left and right partition walls into a central punched-cass receiving portion and left and right edge locking claws and bosses, and the front cover partition and the rear cover partition are mutually connected. By providing a horizontal partition that is continuous from the end facing the side wall to the side wall of the bottom cover, and by providing a vertical rib on the opposing surface of the horizontal partition, it was possible to prevent paper spillage from spilling outside.

  FIG. 1 shows a punch 11, the basic structure of which is the same as that of a conventional punch, and a pair of left and right punch shaft support frames 13 are mounted on a base plate 12 having a step between the front and rear. A gate-shaped lever handle 14 is pin-coupled to the front portion of 13 via a handle support pin 15. Although not shown in the figure, a round pin shaped punch shaft is mounted in the vertical punch shaft guide hole formed in the bottom plate portion of the punch shaft support frame 13, and the lever handle 14 and the punch shaft are The lever handle 14 and the punch shaft are connected by a punch shaft support pin 16 penetrating into the base plate. When the lever handle 14 is pushed down, the punch shaft is lowered and penetrates through the die hole of the base plate 12 to support the base plate 12 and the punch shaft. A round hole is drilled in the paper inserted between the frame 13.

  A plastic bottom cover 17 is attached to the lower surface of the base plate 12, and the circular paper scrap punched out by the punch shaft falls into the bottom cover 17. Gauge insertion holes 18L and 18R are formed on the left and right sides of the front part of the bottom cover 17. In the figure, a long and narrow plate-like gauge 41 is inserted from the right gauge insertion hole 18R. 41 can be pulled out and inserted into the left gauge insertion port 18L, and the gauge 41 can be attached to any right or left side.

  2 and 3 show the bottom cover 17, which is a plastic tray-shaped part formed so as to cover the entire lower surface of the base plate 12, and is a thin-walled hinge portion 19 that extends slightly rearward from the front and rear center and covers the entire width. The front cover part 20 and the rear cover part 21 are divided into two parts, and the rear cover part 21 can be opened and closed with the bottom cover 17 attached to the base plate 12. By opening 21, the circular paper waste accumulated in the internal space between the base plate 12 and the bottom cover 17 can be discharged.

  Gauge guide grooves 22 are formed in the front portion of the front cover portion 20 to connect the gauge insertion ports 18L and 18R on the left and right side surfaces. The front and rear intermediate portions of the upper surface of the gauge guide groove 22 are open across the left and right ends, and as shown in FIG. 2, there are a pair of front and rear positioning guides 23R and 23L that cross the entire width of the bottom of the gauge guide groove 22. Is provided.

  A plurality of positioning recesses 24 and 25 are arranged in the longitudinal direction on the upper surface of the positioning guides 23R and 23L, and rearward with respect to the positioning recess 24 of the positioning guide 23R on the front side (lower side in FIG. 3 (d)). The positioning recesses 25 of the positioning guide 23L are arranged 180 degrees rotationally symmetric and are provided near the end of the gauge 41 opposite to the bent portion 42 when the gauge 41 is inserted from the left or right side. The downward projection 43 (shown in Fig. 4) fits into the positioning recesses 24 and 25, and the gauge 41 is placed on the A4 side (the orientation of the paper when punching holes in the vertical side), B5 side, A5 side (A5 side) , Positioning at predetermined positions such as B6 horizontal (B5 vertical), A6 horizontal, A6 vertical.

  The space behind the gauge guide groove 22 of the bottom cover 17 (the upper side in FIG. 3 (d)) is a paper waste storage space 26, and the bottom cover 17 is formed from the left and right ends of the back of the gauge guide groove 22 on the front cover 20 side. A pair of left and right partition walls 27, 28 are provided on the rear wall, the distance between which gradually decreases. The rear end of the partition wall 28 on the rear cover part 21 side is connected to the inner side of a pair of left and right engaging claws 29 (claws that engage the back surface of the base plate 12) formed on the rear wall surface of the rear cover part 21. The pair of latching claws 30 on the left and right side surfaces of the rear portion of the front cover portion 20 and the pair of latching claws 29 of the rear cover portion 21 are separated to the outside of the central punching space 26 by the partition walls 27 and 28. ing.

  As shown in the enlarged partial view of the partition wall in FIG. 5, the partition wall 27 on the front cover portion 20 side and the partition wall 28 on the rear cover portion 21 side are refracted laterally at the hinge portion 19 and parallel to the hinge portion 19. A plurality of vertical ribs 33 are formed in parallel on the horizontal partition walls 31 and 32 that are opposed to each other at a narrow interval. In the figure, slits 34 and 35 around the bases of the locking claw 30 disposed on the side wall of the front cover portion 20 and the locking claw 29 disposed on the rear wall of the rear cover portion 21 are shown.

  Since the bottom cover 17 is provided with the partition walls 27 and 28 and the horizontal partition walls 31 and 32, the paper scraps that have fallen into the punch waste storage space 26 due to the punching operation are clogged in the slits 34 and 35 or dropped to the outside. There is nothing to do. Further, when the back cover 21 is opened and the waste is discharged, the waste left on the front cover 20 is smoothly moved to the rear opening along the partition walls 27 and 28 and discharged. It is possible to easily remove all the waste.

  In addition, due to the structure in which the hinge portion 19 is provided so that the rear cover portion 21 can be opened and closed, the partition walls 27 and 28 are divided into a partition wall 27 on the front cover portion 20 side and a partition wall 28 on the rear cover portion 21 side, so that there is no gap. However, even if there is a blank in the gap, the blank is caught by the vertical ribs 33 of the transverse bulkheads 31 and 32 facing each other at a narrow interval and is prevented from moving outward. There is almost no spillage through the gap.

  As described above, the punch according to the present invention is easy to use because the punch of the paper does not scatter and the discharge of the punch is easy.

  Note that the present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and the present invention naturally extends to those modified ones.

The perspective view of a punch. The perspective view of the bottom cover of a punch. The bottom cover is shown, (a) is a rear view, (b) is a bottom view, (c) is a left side view, (d) is a plan view, (e) is a right side view, and (f) is a front view. The perspective view of the bottom cover which attached the gauge. The enlarged view of the partition part of a bottom cover.

Explanation of symbols

11 Punch
12 Base plate
13 Punch shaft support frame
14 Lever handle
15 Handle support pin
16 Punch shaft support pin
17 Bottom cover
18R, 18L Gage insertion slot
19 Hinge
20 Front cover
21 Back cover
26 Unused waste storage space
27. 28 Bulkhead
29.30 Locking claw
31. 32 Horizontal bulkhead
33 vertical ribs
34.35 Slit

Claims (3)

A resin bottom cover for receiving punch punch debris, comprising a front cover part, a hinge part, and a rear cover part, and is attached to the bottom surface of the punch base plate by a locking claw formed in the peripheral part. In the bottom cover of the punch that can open and close the back cover,
A punch bottom cover, wherein the front cover part and the rear cover part are provided with a pair of left and right partition walls for partitioning a central punched-cass storage part and left and right edge locking claws.   2. The bottom surface of the punch according to claim 1, further comprising a lateral partition wall that extends outwardly from the mutually opposing end portions of the partition wall of the front cover portion and the partition wall of the rear cover portion along the hinge portion and continues to the side wall of the bottom cover. cover. The bottom cover of the punch according to claim 2, wherein one or a plurality of vertical ribs are provided on the opposing surfaces of the horizontal partition walls that face each other in the front-rear direction.

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