JP2649146B2 - punch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch capable of coping with an increase in the number of holes to be formed due to a change in the size of paper.

[0002]

2. Description of the Related Art In general, various types of punches for making holes for files on paper are commercially available, but there are usually punches for two holes and for four holes. After inserting paper or the like into the gap between the support and the support that pivots, press down the free end of the arm, and the punch for punching built in the leg of the arm and the support lowers. do it,
When a hole is made with the piercing blade at the lower end and the hand is released, the built-in spring returns the arm to the original position.

[0003]

However, in the above-mentioned conventional punch, when the arm is lowered, all the built-in punches descend, and holes are formed at the corresponding positions. Using only a four-hole punch, drill the center two holes,
It was extremely inconvenient to use different types of holes depending on the number of holes to be drilled, such as drilling all holes. The present invention has been proposed in view of the above circumstances, and can cope with a change in the size of paper and an increase or decrease in the number of holes to be punched. The purpose of the present invention is to provide a punch which is extremely convenient for practical use in the dual use.

[0004]

According to the present invention, as a means for solving the above-mentioned problems, there is provided a base provided with four perforation holes at predetermined intervals on a board surface, and a base provided on the base. A support base attached with a gap for inserting paper or the like at a position corresponding to the perforation hole, and legs corresponding to each support base, and the side surfaces of the legs are located on the same axis. An integrated arm supported on the side of each support by a pivot shaft, the upper end is inserted into a hole provided on the ceiling surface of each support, and the lower end has a perforation blade corresponding to a perforation hole, A hole-piercing punch supported on a swing shaft, the portion being provided on a side surface of a support base and a leg portion of an arm, the hole being engaged with a swing long hole along an arc centered on the pivot shaft; A pressure spring that is interposed on the shaft and separates the free end of the arm from the board surface of the base, and can be moved back and forth in the arm leg to press At the forward position, it is pressed against the ceiling surface of the leg and moved by the knob that engages with the long hole for sliding provided on the ceiling surface. possess a slide member provided with engagement shoulder for releasing the engagement at the position, the 4
The hole corresponding to the center two of the holes
There is no sliding member in the arm leg,
There is no long hole for rocking on the side of the leg.
Support both ends of the moving shaft in the holes provided on the side of the arm leg.
The present invention is characterized in that a closed punch is formed.

[0005]

[0006] In the punch having the aforementioned configuration, the support base and the pivot shaft of the legs of the arms corresponding to the two drilling holes in the center, but it may also be omitted pressure spring.

[0007]

Since the punch according to the present invention is constituted by the above-described means, when the free end of the arm is lowered, if the slide member is at the forward position, the engagement shoulder portion of the slide member is punched by the punch for punching. The swinging shaft is swung along the swinging long hole to engage with the swinging shaft and lower the swinging shaft, and the punch for punching supported by the swinging shaft supports the upper end thereof. The paper inserted into the gap between the base and the support is perforated by the perforation blade at the lower end and guided by the hole provided in the ceiling surface of the base.

However, if the slide member is at the retracted position,
Since the engagement shoulder portion of the slide member is disengaged from the swinging shaft of the punch for punching, even if the free end of the arm is pressed down, the punch for punching does not descend. It is not pierced by the piercing punch.

In a punch having two holes and a hole for four holes, if the arm is lowered while the slide members corresponding to the holes on both sides are moved to the retracted position, the leg of the arm is lowered. The punch for punching is lowered by the swing shaft supported by the hole provided on the side surface of the portion, and the paper corresponding to the two central holes is punched by the punch for punching. When the slide member corresponding to the hole is moved to the forward position to lower the arm, four portions corresponding to the four holes are bored together.

When the hand is released from the arm, the arm is pressed by the pressing spring and returns to its original position. When the slide member is in the forward / reverse position, the slide member is moved by the stopper. To be blocked,
There is no danger of the slide member moving when the arm is lowered,
The holes will be drilled safely and reliably.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on an embodiment shown in the drawings. FIG. 1 is a perspective view of a two-hole punch and a four-hole punch showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a portion X in FIG. Next, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1 and shows a released state, in which (a) shows a state before arm pressure reduction and (b) shows a state after arm pressure reduction.

FIG. 4 is a cross-sectional view taken along the line AA in FIG. 1 and shows a locked state.
(B) shows the state after the arm pressure is reduced. FIG. 5 is a cross-sectional view taken along the line BB in FIG. 1, wherein (a) shows a state before the arm is lowered, and (b) shows a state after the arm is lowered.

In FIG. 1, reference numeral 1 denotes a base in which a space 2 is formed, and four perforation holes 3 are provided at predetermined intervals on the board surface.
By removing the bottom plate 4, it can be discharged. Reference numeral 5 denotes a support base attached to the base 1 with screws 6 at a position corresponding to the hole 3 for drilling on the base 1,
A gap 7 for inserting paper or the like from the front as indicated by an arrow is provided between the support base 5 and the base 1.

Reference numeral 8 denotes an integral arm, which has legs 9 corresponding to the respective supports 5. Reference numeral 10 denotes a pivot shaft for supporting the side surface of the leg 9 of the arm 8 and the side surface of the support base 5. The pivot shafts are located on the same axis, and both ends of each pivot shaft are held by washers 11.

Reference numeral 12 denotes a hole for supporting the pivot 10 provided on the side surface of the leg 9 of the arm 8, and reference numeral 13 denotes an open hole for supporting the pivot 10 provided on the side surface of the support 5. It is.

Reference numeral 14 denotes a punch for punching, the upper end of which is inserted into a hole 15 provided on the ceiling surface of the support base 5, and the lower end of which has a punching blade 16 corresponding to the hole 3 for punching. Reference numeral 17 denotes a swinging long hole provided on each side surface of the support base 5 and the leg 9 of the arm 8, and is formed along an arc R centered on the pivot shaft 10.

Reference numeral 18 denotes a swinging shaft. A shaft hole 19 for supporting the swinging shaft 18 is provided at a central portion of the punch 14 for punching. 9 is engaged with a swinging long hole 17 provided on the side face of the
It is held by 0. Reference numeral 21 denotes a pressing spring that separates the free end of the arm 8 from the board surface of the base 1, is interposed on the pivot 10, and has one end of the pressing spring 21 on the side edge of the ceiling surface of the support base 5. A slit 23 is provided to guide the extending spring end 22 upward.

Reference numeral 24 denotes a slide member which can move back and forth in the leg 9 of the arm 8 and is pressed against the ceiling surface of the leg 9 by one spring end 22 of the pressing spring 21. Reference numeral 25 denotes an elongated slide hole provided on the ceiling surface of the leg 9 of the arm 8, and a knob 26 of the slide member 24 is engaged with the elongated slide hole 25.

Reference numeral 27 denotes an L-shaped engaging shoulder which pushes the knob 26 to slide the slide member 24 into the slot 2 for sliding.
When the slide member 24 is moved along the position 5, as shown in FIG. 4, the engagement shoulder portion 27 is engaged with the swing shaft 18 of the punch for punching 14 in the advanced position so as to be able to be pressed down, as shown in FIG. As shown in FIG. 3, the engagement between the engagement shoulder 27 and the pivot shaft 18 is disengaged from the retracted position, and the disengagement state is established.

Reference numeral 28 denotes a convex stopper provided on the ceiling surface in the leg 9 of the arm 8, and when the slide member 24 is in the forward position, the rear end of the slide member 24 is shown in FIG. As described above, the slide member 24 is prevented from retreating by contacting the stopper 28.

Reference numeral 29 denotes a concave groove provided on the slide surface of the slide member 24. When the slide member 24 is at the retracted position, as shown in FIG.
9 and is held so as to prevent the slide member 24 from moving forward. However, in this embodiment,
As shown in FIG. 5, a slide member 24 is provided in the leg 9 of the arm 8 corresponding to the center two holes 3 among the four holes 3 provided on the board surface of the base 1. No pivot hole 17 is provided on the side surface of the leg 9 of the arm 8.

Instead, a hole 30 is provided in the side surface of the leg 9 of the arm 8 as shown in FIG. 1, and the arm 8 is inserted through a swinging long hole 17 provided in the side surface of the support base 5. Both ends of the swing shaft 18 supported by holes 30 provided in the legs 9 are held by washers 20. In the present embodiment, the pressing spring 2 for returning the arm 8 to the original position is provided.
1 is housed only in the legs 9 on both sides of the arm 8, but also in the center legs 9 shown in FIG. However, it is troublesome to assemble it, so we decided to omit it.
However, since the other structure is basically the same as the portion X in FIG. 1 shown in FIG. 2, the same members are denoted by the same reference numerals and description thereof will be omitted.

In the punch of the present invention having the above-described structure, as shown in FIG. 1, when the knobs 26 on both sides are pushed to retreat the slide member 24, as shown in FIG. The engagement with the swing shaft 18 is released, and both sides are released. When the arm 8 is lowered in this state,
Since both sides are in the state of (b) to (b) in FIG. 3, the punches for punching 14 on both sides do not descend, and the punches for punching 1 at the center are not lowered.
Only 4 descends and changes from the state (a) to the state (b) in FIG. Accordingly, only two file holes are formed in the center of the paper.

On the other hand, when the slide members 26 are advanced by pushing the knobs 26 on both sides, as shown in FIG. 4, the engaging shoulders 27 are engaged with the swing shaft 18 so as to be able to be pressed down, and both sides are locked. State. Therefore, when the arm 8 is pressed down in this state, both sides are changed from the state (a) to the state (b) in FIG. 4, and the punches 14 on both sides descend, and the punches 14 on the center also descend. From 5 (a) to (b)
State. Therefore, there are four places on the center and both sides of the paper,
A hole for the file will be drilled at the same time. In addition,
In this embodiment, the slide members 24 are provided only on the legs 9 on both sides, but the slide members 24 may also be provided on the center leg 9.

Further, a plurality of perforation holes 3 provided on the board surface are provided, and a slide member 24 is provided on each of the legs 9 of the arm 8 corresponding to each perforation hole 3, and each of the engagement shoulders 27 is provided.
It is needless to say that if engagement and disengagement with the rocking shaft 18 can be performed, perforation and non-perforation can be appropriately set according to the position of each perforation hole 3.

Further, in this embodiment, a guide wall 31 for regulating the position of the paper is provided on the side of the bottom plate 4, but the guide wall 31 is slid in the width direction and can be moved in the direction of the arrow shown in FIG. When set according to the size of the paper to be inserted,
It is also possible for the paper to be centered automatically. In this embodiment, the convex stopper 2
8 is provided to prevent the movement of the slide member 24 at the forward / rearward position. However, the stopper mechanism is not limited to the illustrated embodiment, and a known stopper mechanism may be employed. Needless to say.

[0027]

As described above in detail, according to the present invention, even if the size of the paper changes and the number of holes to be perforated increases or decreases, it is possible to cope with this. For 4
It can also be used for a single hole.

Further, since the structure is simple, the operation is easy, and it is possible to switch between perforation and non-perforation only by moving the slide member, so that even if the paper size changes frequently, it can easily cope with this. Can be. Has many advantages,
It is possible to provide a punch which is extremely convenient in practical use.

[0029]

[Brief description of the drawings]

FIG. 1 is a perspective view of a punch having two holes and four holes, according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a part X in FIG.

3 is a cross-sectional view taken along the line AA in FIG. 1, showing a released state, in which (a) shows a state before arm pressure reduction and (b) shows a state after arm pressure reduction.

4 is a cross-sectional view taken along the line AA in FIG. 1, showing a locked state, in which (a) shows a state before arm pressure reduction and (b) shows a state after arm pressure reduction.

FIG. 5 is a sectional view taken along line BB in FIG. 1;
(A) shows the state before the arm is lowered, and (B) shows the state after the arm is lowered.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base 2 space 3 perforation hole 4 bottom plate 5 support base 6 screw 7 gap 8 arm 9 leg 10 pivot shaft 11 washer 12 hole 13 open hole 14 punch for punch 15 hole 16 drilling blade 17 swinging long hole 18 swing Shaft 19 Shaft hole 20 Washer 21 Press spring 22 Spring end 23 Slit 24 Slide member 25 Sliding hole 26 Knob 27 Engagement shoulder 28 Stopper 29 Groove 30 Hole 31 Guide wall

Claims (2)

(57) [Claims] 1. A base provided with four perforation holes at predetermined intervals on a board surface, and attached to a position corresponding to the perforation holes on the base with a gap for inserting paper or the like. A support arm and legs each corresponding to each support base, and an integral arm supported on the side surface of each support base by a pivot shaft whose side surface is located on the same axis, Centered around a pivot shaft, which is inserted into a hole provided on the ceiling surface of each support base, has a drilling blade corresponding to a hole for drilling at the lower end, and a center part is provided on the side surface of the support base and the leg of the arm. A hole punch for punching supported by a rocking shaft that engages with a long hole for rocking along a circular arc, a pressing spring interposed on the pivot shaft, and separating the free end of the arm from the board surface of the base; It is possible to move back and forth inside the arm leg,
Pressed against the ceiling surface of the leg by a pressing spring, moved by a knob that engages with a long hole for sliding provided on the ceiling surface, and engages with the swinging shaft of the hole punch for punching in the forward position so that it can be lowered. possess a slide member provided with engagement shoulder for releasing the engagement at the retracted position, the four perforations
Of the arm corresponding to the center two holes for drilling
No sliding member is provided inside the arm, and the side of the arm leg
There is no oscillating slot on the surface.
A punch characterized in that its end is supported in a hole provided in a side surface of a leg of an arm . 2. The punch according to claim 1 , wherein a pressing spring is not provided on the support shaft corresponding to the two center holes and the pivot shaft of the leg of the arm.