JPH0310935Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a knife configured in a card shape.

(Prior Art) Various knives have been proposed, such as a cutting knife, a switchblade knife, and a mountain climbing knife. The structure of these knives can be roughly divided into two types: those in which the cutting blade is fixed to the handle, and those in which the cutting blade is rotatably attached to the storage case. The cutting blade is configured to protect the cutting blade and prevent danger, and the latter is configured to rotate the cutting blade and store the cutting blade in the storage case to protect the cutting blade and prevent danger. .

Therefore, a safety paper cutter for the purpose of providing a safe paper knife was developed in 1986-54064.
It has been proposed in the Publication No. This safety paper cutter has a structure in which a guard plate is provided around the blade on the same plane as the blade, apart from the guide groove.

(Problems to be solved by the invention) Each of the above-mentioned conventional knives has achieved some results, but the common problems of the products include bulkiness and weight, and the former of the conventional techniques In this case, dimensional accuracy and precise fitting structure are required in order to prevent accidents and dangers caused by the sheath easily coming off the handle. It is quite difficult to create a structure that prevents accidents and dangers caused by excessive rotation, and also prevents difficulty in use due to excessive rotation.

The safety paper cutter described in the above publication requires pressing the tip of the guard plate against the paper surface and bending the guard plate to make the blade protrude downward each time it is used, so the paper cutter must be held while cutting. When cutting paper, it is difficult to
The paper must be placed on a hard surface (for example, a hard substrate, a desk, a table, etc.) when working.
This is inconvenient if you are not holding a hard object, and there is a risk of injury from the blade if the tip of the guard plate is pressed against a fingertip instead of a hard object.

The present invention was created with attention to these circumstances, and is safe and convenient because it is not bulky, lightweight, and does not require high dimensional accuracy, precise fitting structure, or appropriate degree of rotation. The purpose is to provide a card-shaped knife.

(Means for Solving Problems) The means proposed by the present invention is to bendably provide a thin cutting blade on a part of the thin base in substantially the same plane as the thin base, and to bend the cutting blade to the thin base. The thin cutting blade is surrounded by a base body, and a relatively slidable operator combined with the base body causes the thin cutting blade body to protrude toward one side of the thin base body.

(Function) Since the present invention consists of the above means, if either the thin base or the operator is slid and the other side of the cutting blade is pushed by the operator, the cutting blade will be moved to one side of the thin base. It becomes possible to bend and protrude and cut.

(Example) Some embodiments will be described with reference to the drawings.

In the first example shown in FIGS. 1 to 4, a cutting blade 2 is integrally punched into a part (approximately the center part in the figure) of a thin base 1 made of a thin metal plate (for example, a stainless steel plate, etc.). The base body 1 is equipped with a slidable operator 3 that allows the cutting blade to forcibly and elastically bend and protrude toward one side of the base body 1, and further forcibly and elastically return to its original position. It has a strong structure. The thin base 1 is formed into a rectangular shape for ease of use, and in order to prevent the operator 3 from falling off, it has jagged edges on both long sides or on both the front and back surfaces.
An engaging portion 4 having a wave shape or the like is formed. The cutting blade 2 is punched and formed into a thin base body 1 in a substantially arrow shape from the front, a cutting edge 201 is formed on one oblique edge, the cutting edge side and the opposite side are kept connected to the base body 1, and are integrally formed with the base body. Since the cutting blade 2 needs to elastically bend and protrude toward one side of the base 1, a portion on the center line is bulged out toward the other side in an almost chevron shape to form the bulge 5. By pushing this bulge with the operator 3, the bulge is forcibly and resiliently bent toward one side. The operator 3 is made of metal or hard synthetic resin in the shape of a narrow strip, and is configured as a rectangular frame (mouth-shaped frame) consisting of a top plate portion and both ends, and is adapted to engage and disengage from the engaging portion 4 of the base body 1. The engaging piece 6 is formed on the inner surfaces of both sides or one side, and the top plate portion is disposed on the side of the bulging portion 5 of the cutting blade 2 and is slidably mounted on the base body 1. The engagement piece 6 of the operator 3 is
The arrangement location differs depending on the formation part of the engaging part 4 of the base body 1. When the engaging part 4 is formed on both long side edges of the base body 1 as in the illustrated example, the position opposite to the operator 3 is If the engaging portion 4 is formed on both the front and back surfaces of the base 1, either the inner surface of the top plate of the operator 3 or the inner surface facing the top plate, or the inner surface of both sides thereof. to be placed.

Next, to explain how to use it, in the state shown in FIG. 1, FIG. 2, and FIG. Slide the operator 3 toward the bulge 5 as shown in FIG. Cutting is performed by moving the base body 1 and the cutting blade 2 while viewing the cutting edge 201 from the through hole 7 formed by the cutting blade 2 bending and protruding. After use, when the operator 3 is returned to its original position, the bent cutting blade body 2 springs back, and the cutting edge 201 automatically returns to its original position and is housed on substantially the same plane as the base body 1. Operator 3
Since the engaging piece 6 engages with the engaging part of the base body 1, it makes a clicking sound when sliding, maintains the engaged state at the stopped position, and does not slide unnecessarily.
Moreover, it does not easily fall off from the base body 1.

The second example shown in FIGS. 5, 6, and 7 has almost the same material, shape, structure, etc. of the thin base 1, cutting blade 2, cutting edge 201, engaging portion 4, etc. as in the first example. However, the structure of the operator 3 and the way the base 1 and operator 3 are combined differ from the first example. The operator 3 is the same as the first example in terms of the material, the shape of the mouth, the shape of the mouth, and the engaging piece 6, but has a structure in which a pressing part 301 for the bulging part 5 is provided on the inner surface of the top plate part. 1st
Be different from the example. The method of assembling the base body 1 and the operator 3 is to turn the base body 1 and cutting blade body 2 of the first example upside down, arrange the bulge part 5 of the cutting blade body 2 in the opposite direction to that of the first example, and place the bulge part on the bulge part. The pressing parts 301 of the operator 3 are slidably mounted on the base body 1 so as to face each other.
When the base body 1, the cutting blade body 2, and the operator 3 are combined in this way, the pressing part 301 of the operator 3 faces the trough created by the bulging part 5 being arranged in the opposite direction, and the pressing part 301 of the operator 3 is The part fits into the trough, so the position where the pressing part and the trough fit together is the original position of the operator 3 (the position where the operator is indicated by the solid line in Figures 5 and 6 is original position).

Next, to explain how to use it, when the cutting blade body 2 shown in FIGS. When you slide it towards the
The pressing part 301 gradually pushes the slope of the bulging part 5, bends the cutting blade body 2, and forcibly protrudes the cutting edge 201 to one side (downward in Fig. 6) (see two points in Fig. 6). ), the cutting blade body 2 as in the first example
The base body 1 and the cutting blade body 2 are moved and used while looking at the cutting edge 201 through the through hole (no reference numeral) formed by the bent protrusion. After use, when the operator 3 is returned to its original position, the cutting blade body 2 elastically returns to its original position, and the cutting edge 201 is placed on substantially the same plane as the base body 1. As in the first example, the operator 3 does not slide unnecessarily due to the engagement between the engaging portion 4 and the engaging piece 6, and does not easily fall off from the base body 1.

In the third example shown in FIGS. 8 to 11, the materials of the base 1, cutting blade 2, engaging part 4, bulging part 5,
Although the shape and structure are almost the same, the shape and structure of the operator 3 and the way in which the base 1 and the operator 3 are combined are different from the first example. The operator 3 in this example is
Constructed in a box shape from metal, hard synthetic resin, wood, etc.
In addition, a columnar pressing part 301 for the bulging part 5 is provided on the inner surface of the bottom part to protrude upward, and a fitting groove 302 for the base body 1 is provided in a symmetrical position on both opposing side walls. An engaging piece 6 for the engaging portion 4 is provided in a protruding manner to face each other. How to combine the base 1 and the operator 3 is as follows.
Both side edges of the base body 1 are slidably fitted into the fitting grooves 302, and the engaging portions 4 are engaged with the engaging pieces 6 to be assembled.

Next, the method of use will be explained with reference to FIG.
The slope of the bulging portion 5 is forcibly pushed, the cutting blade body 2 is bent, the cutting edge 201 is forcibly and elastically protruded toward one side (upper side in FIG. 11), and the operator 3 is held down. However, the object to be cut is cut by reciprocating as if cutting bonito flakes, and the cutting waste is caused to fall and be stored in the operator 3. When you finish using it, return the sliding side to its original position, and the cutting blade 2 will spring back to its original position. Operator 3 is
As in the above two embodiments, the engagement between the engaging portion 4 and the engaging piece 6 prevents unnecessary sliding, and the base body 1
Do not allow it to fall off easily. Note that the depth of the box-shaped operator 3 in this example is not so deep in order to avoid bulkiness. Further, the cross-sectional shape of the bulging portion 5 in this example can be formed into the same chevron shape as in the first and second examples.

In all of the above embodiments, although not shown, a card case similar to a well-known card case (phone card case, automatic ticket vending machine card case, etc.) is prepared, and products such as the first example and the second example are prepared. In addition, a small case such as a portable pine box is prepared to take the third example product in and out, making it convenient to store and carry, as well as ensuring safety. do.

(Effects of the Invention) As described, the present invention includes bendably providing a thin cutting blade on a part of the thin base on substantially the same plane as the thin base, and surrounding the cutting blade with the thin base. , the thin cutting blade is made to protrude toward one side of the thin base using a relatively slidable operator combined with the base, so if the other side of the cutting blade is pushed with the operator, the thin It becomes possible to bend and protrude from one side of the base and cut it. Therefore, it is convenient because the thin substrate can be easily cut by holding the object to be cut or placing it on a suitable object without pressing it anywhere, and there is no risk of injury from the cutting blade. Furthermore, since the base body and the cutting blade are thin, they are light and not bulky, and have a simple structure, so they do not require much dimensional accuracy or precise fitting structure.

[Brief explanation of drawings]

Fig. 1 is a front view showing the first example of the card-type knife of the present invention, Fig. 2 is a cross-sectional view taken along line 2-2, Fig. 3 is a longitudinal side view taken along line 3-3, and Fig. 4 is a longitudinal sectional view taken along line 3-3. The figure is a schematic explanatory diagram of how to use it, Figure 5 is a partially cutaway front view of the second example, Figure 6 is a cross-sectional view taken along line 6-6, and Figure 7 is a cross-sectional view along line 6-6.
The figure is a longitudinal side view along line 7-7, and Figure 8 is the 3rd side view.
FIG. 9 is a front view of the example, FIG. 9 is a cross-sectional view thereof, FIG. 10 is a longitudinal side view taken along line 10-10, and FIG. 11 is a schematic explanatory diagram of usage. In the figure, 1... thin base body, 2... thin cutting blade body,
3...Manipulator.

Claims (1)

[Scope of utility model registration request] A thin cutting blade is bendably provided on a part of the thin base substantially on the same plane as the thin base, the cutting blade is surrounded by the thin base, and the operation is relatively slidable when combined with the base. A card-shaped knife with a thin cutting blade that protrudes from one side of a thin base.