JPS6122800Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-hole punch that ensures reliable operation, significantly reduces operating force, and allows for miniaturization of the punch as a whole.

There are various types of punches for making holes in perforated paper, ranging from one hole to about 30 holes. For punches with two or more holes, basically all the rod blades of the same length (the lower ends of the rods are formed into blades) are moved at the same time by pressing down on the lever. The structure is such that holes are made in the paper to be perforated, which is positioned at Therefore, a paper with a large number of holes requires a correspondingly large force when punching, and there is a problem in that it is not possible to punch holes in a large number of sheets of paper at the same time. In addition, the lever has to be long in order to increase the lever ratio, and it is usually arranged at right angles to the direction in which the rod blades are arranged, so there is a problem that the lever becomes large as a whole.

The present invention has been made to solve this problem. Therefore, in this invention, a large number of rod blades are lined up, and these rod blades are pressed by a holding mechanism.
In a multi-hole punch for perforating paper that is positioned at the tip of the rod blade, the main body is vertically provided on the base, and the rod blade and the descending mechanism for the rod blade are housed inside the main body, and the outside thereof is A lever is rotatably supported in the direction in which the rod blades are arranged side by side, and an auxiliary base is pivotably pivoted on the side opposite to the side where the lever is provided on the base. .

Next, one embodiment of the present invention will be explained with reference to the drawings. The one shown in FIG.
An auxiliary base 3 is pivotally attached to the front part of the holder, that is, the side opposite to the side where a lever 6, which will be described later, is provided, by a shaft 4. The state shown is in use,
When not in use, the auxiliary base 3 is raised up using the shaft 4 as a fulcrum, and folded to line up with the main body 2. A gap 5 is provided between the base 1 and the main body 2, into which the perforated portion of the paper to be perforated is inserted. A lever 6 is provided on one side (the opposite side in the figure) of the main body 2, and is adapted to push down the rod blade inside the main body 2. This structure will be described later.

As shown in FIGS. 2 and 3, a large number of rod blades 7 are arranged in the interior of the main body 2. In this embodiment, 30 rod blades 7 are arranged in a straight line so that 30 holes can be made. The rod blade 7 is connected to the U-shaped metal fitting 8 inside the main body 2.
It passes through the holes 9, 10 of and the hole 10' of the retaining fitting 8', and faces the aforementioned gap 5. In addition, base 1
A hole 11 is provided in the hole 11 into which the rod blade 7 is inserted when it is lowered. In FIG. 3, illustration of the main body 2 and the auxiliary base 3 is omitted for convenience.

The rod blade 7 is provided with a narrow diameter portion 7a at its upper portion. The narrow diameter portion 7a is held between both sides by the bent portions 12a of two L-shaped holding plates 12 that are provided to face each other.
Thereby, the rod blade 7 is held movable up and down. Bent portions 12a of two holding plates 12
As shown in FIG. 2, is formed in a plurality of steps. In this embodiment, there are eight levels, with the center one being the highest and decreasing successively on both sides.

As shown in FIG. 2, a presser plate 13 is fixed to the retainer plate 12 with screws 14 (which may be rivets). As a result, the holding plate 12 is lowered together with the presser plate 13 when it is lowered. Two rectangular holes 15 are provided in the holding plate 13. A circular plate 16 whose diameter is just in contact with the upper and lower edges of the holes 15 is rotatably provided on the inner periphery of these holes 15 .

The disk 16 is supported by a shaft 17 at a position outside its center (on the left side in FIG. 2),
One shaft 17 is connected to the lever 6 mentioned above. The shaft 17 is supported by a hole provided in the main body 2. Holding plate 13, disk 16, shaft 17, lever 6
A holding mechanism for the rod blade 7 is constructed by the above. Both ends of a connecting rod 18 are pivotally connected between the two discs 16, 16 by a shaft 19, so that the two discs 16 can rotate simultaneously.

The multi-hole punch configured in this way is fixed to one end of the shaft 17 by inserting the perforated part of the perforated paper (not shown) into the gap 5 and pushing down the lever 6 so as to rotate it around the shaft 17. The disc 16 rotates clockwise in FIG. As a result, the holding plate 13 is lowered, so that the holding plate 1
2, a large number of rod blades 7 are lowered simultaneously.

When the rod blade 7 passes through the perforated paper, the perforated paper will be perforated. In this case,
Since the bent portion 12a of the holding plate 12 is formed with a stepped portion as described above, the tip of the rod blade 7 does not approach the hole 11 of the base 1 at the same time, but from the lower portion of the rod blade. , hole 11 in the order of the rod blade in the higher part (from both sides to the center in Figure 2)
The holes will be drilled one after another. In this way, the resistance force applied to the lever 6 is distributed.

4 and 5 schematically show other examples of the pressing mechanism for the rod blade 7. FIG. In this embodiment, a notch 15' is provided in the presser plate 13, and the shaft 17 of the disc 16 is positioned within this notch 15'.
The disc 16 is brought into contact with the upper and lower parts of the notch 15'. Since there are no changes in other parts, the same reference numerals as in the previous embodiment are given.
The explanation will be omitted. There is no functional difference in this embodiment.

Since the present invention is constructed as described above, the length of the lever can be made sufficiently long, so that the force required during drilling can be reduced. In addition, the rotating surface of the lever can be made into a surface along the main body, and an auxiliary base is provided separately from the base, and this auxiliary base is pivoted to the base so that it can be raised and lowered, so the overall size is small. This gives rise to the advantage of

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a front view showing the inside of the device shown in Fig. 1, and Fig. 3 is a perspective view of an embodiment of the invention.
FIG. 4 is a front view schematically showing the inside of another example of the pressing mechanism for the rod blade, and FIG. 5 is a sectional view of the main part of the mechanism shown in FIG. 4. 1...Base, 2...Main body, 3...Auxiliary base, 4
... shaft, 5 ... gap, 6 ... lever, 7 ... rod blade, 13 ... holding plate, 15 ... hole, 15' ...
Notch, 16...disc, 17...shaft.

Claims (1)

[Scope of utility model registration request] A multi-hole punch in which a large number of rod blades are lined up, these rod blades are pressed by a holding mechanism, and the main body is installed vertically on a base and the main body is A rod blade and a lowering mechanism for the rod blade are housed inside, and a lever is rotatably supported on the outside in the direction in which the rod blades are arranged side by side, and a lever is supported on the side opposite to the side on which the lever is provided on the base. is a porous punch characterized by having an auxiliary base pivoted to allow it to be raised and lowered.