JP2535796Y2 - Blade mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a blade mounting device used for, for example, a paper cutter for cutting paper.

[0002]

2. Description of the Related Art Conventionally, as a paper cutter, for example, a paper cutter described in Japanese Utility Model Laid-Open Publication No. Sho 60-179280 is known. Basically, the rotation adjusting member is pivotally supported on a guide support plate that slides on the upper surface of the paper at its lower surface so that the rotation can be adjusted. The blade is provided so as to slightly protrude from the lower surface, and the amount of protrusion of the blade from the guide support plate can be adjusted by the amount of rotation of the rotation adjusting member. Thus, as a blade body mounting device used for such a paper cutter, for example, a main body (Japanese Utility Model Application Laid-Open No.
(Rotation adjusting member referred to in US Pat. No. 179280) is made of a synthetic resin, and a blade body (same blade) is inserted so that a blade edge protrudes at the time of molding. It is known that a blade body is inserted and bonded together with an adhesive so that the blade edge protrudes. However, in each case, since the blade body was fixed to the main body, the blade body could be securely held to the main body, but even if the blade body became dull, it could not be easily replaced.

[0003]

[Problems to be solved by the present invention] The present invention has been made in view of the above-mentioned problems and has been devised in order to solve the above-mentioned problems. It is an object of the present invention to provide a blade body mounting device which is capable of replacing the blade body easily.

[0004]

The blade mounting apparatus of the present invention basically includes a main body, a blade holding cavity provided in the main body and having all of the upper part and a part of the lower part opened, A blade body that is inserted from above the body holding cavity and whose blade edge protrudes from below, and a pressing body that is provided in the main body and that can elastically press the blade body downward and can be displaced in the thickness direction of the blade body. There is a feature in the configuration.

[0005]

When the blade is mounted on the main body, the pressing body is displaced in the thickness direction of the blade. When the pressing body is displaced, the upper part of the blade body holding cavity is opened, and the blade body is inserted from here. When the blade is inserted, the blade protrudes from below the blade holding cavity. Then, when the displacement of the presser body is returned and the blade body is pressed downward by this, the blade body is held by the main body, and the object to be cut such as paper can be cut by the protruding cutting edge. When detaching the blade from the main body, the procedure is reversed. Since the blade body is inserted into the blade body holding cavity so that the blade tip protrudes from below the blade body holding cavity, and is pressed downward by the pressing body, the blade body is securely held to the main body. The blade body can be easily inserted into and removed from the blade body holding cavity by displacing the pressing body in the thickness direction of the blade body. In this case, the displacement amount of the presser body can be extremely small, which is close to the thickness of the blade body. Since the blade body can move upward against the elastic pressure of the presser body, damage and the like can be prevented even when an overload is applied.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a blade body mounting device according to an embodiment of the present invention. FIG. 2 is a perspective view from the opposite side. FIG. 3 is an exploded perspective view. FIG. 4 is a side view. FIG. 5 is a cross-sectional plan view. FIG.
Is a front view. The main part of the blade body mounting device 1 is composed of a main body 2, a blade body holding cavity 3, a blade body 4, and a pressing body 5. The main body 2 serves as a basic part of the blade body attaching device 1, and in this example, has a substantially glans shape and is made of synthetic resin. That is, the disk 6 and the arm plate 7 provided continuously behind the disk 6
The receiving hole 8 is provided on the left side (the right side in FIG. 1) of the disc 6.
However, on the right side of the disk 6, a short axis 9 whose upper part is cut obliquely
In the center of the disk 6 and the short axis 9, an axial hole 10 is provided.
Window holes 11 communicating with the blade holding cavity 3 are formed in the lower part of the blade body holding cavity 3, respectively. Although not shown, the main body 2 is used as a rotation adjusting member in a paper cutter similar to that of Japanese Utility Model Laid-Open Publication No. Sho 60-179280, for example. Is pivoted to be able to ascend. The blade body holding cavity 3 is provided in the main body 2 and has an upper part and a part of the lower part open. In this example, the blade body holding cavity 3 has a substantially vertically long parallelogram and is provided on the front side of the disk 6. . In other words, it is formed by being surrounded by the front wall, the rear wall, the lower wall, the semicircular left wall, and the right wall, and most of the upper and lower parts except for the upper part, the lower front part, and the left left wall. Each of the window holes 11 is open. The blade body 4 is inserted from above the blade body holding cavity 3, and its blade edge 12 projects from below. In this example, the blade body 4 has a substantially vertically long parallelogram and is made of steel. In other words, blade 1
3 are formed, and a cutting edge 12 is formed in a lower front part.
The blade 4 has a long side of 5 mm, a short side of 1.8 mm, and a thickness of 0.1 mm.
4 mm and an inclination angle of 70 degrees. The presser body 5 is provided on the main body 2 and can resiliently press the blade body 4 downward and can be displaced in the thickness direction of the blade body 4. In this example, the presser body 5 has an arc shape and is made of synthetic resin. Are provided integrally on the upper part of the disk 6 to retain elasticity. That is, the base end is continuously provided in a cantilever shape on the upper part of the disk 6 and extends to the front lower side,
At the tip, a step 14 forming the upper wall and the left wall is formed. Next, the operation will be described based on such a configuration. When the blade body 4 is attached to the main body 2, as shown in FIG.
Is displaced in the thickness direction of the blade body 4, that is, in the left direction (right direction in the figure). When the pressing body 5 is displaced, the upper part of the blade body holding cavity 3 is opened, and the blade body 4 is inserted from here. When the blade body 4 is inserted, the blade tip 12 protrudes from below the blade body holding cavity 3, and the blade body 4 extends from above the blade body holding cavity 3.
The front upper part is exposed. Then, the displacement of the presser body 5 is returned, and the step portion 14 is engaged with the front upper portion of the blade body 4. Then, the blade body 4 is pressed downward by the presser body 5 and is held by the main body 2. That is, the blade body 4 is resiliently pressed downward by the pressing body 5 to form the walls forming the blade body holding cavity 3 and the pressing body 5.
And is positioned and held in proper contact with each wall forming the step portion 14. Then, an object to be cut such as paper can be cut by the protruding cutting edge 12. When detaching the blade body 4 from the main body 2, the above procedure is performed in the reverse manner. The blade body 4 is moved so that the blade tip 12 projects from below the blade body holding cavity 3.
And is pressed downward by the presser 5, so that it is securely held to the main body 2. The blade body 4 can be easily inserted into and removed from the blade body holding cavity 3 by displacing the pressing body 5 to the left. In this case, the displacement amount of the presser body 5 may be extremely small, close to the thickness of the blade body 4.
Since the blade body 4 can move upward against the elastic pressure of the pressing body 5, even if an overload is applied, damage and the like can be prevented.

Although the main body 2 has a substantially glans shape in the above embodiment, it is not limited to this, and may have another shape, for example.
The main body 2 is made of a synthetic resin in the above embodiment, but is not limited to this, and may be made of a metal, for example. In the above embodiment, the main body 2 was used as a rotation adjusting member for a paper cutter similar to that of Japanese Utility Model Laid-Open No. 60-179280, but is not limited thereto.
For example, it may be used alone as a design cutter. In the above embodiment, the blade body holding cavity 3 has a substantially vertically long parallelogram, but is not limited thereto, and may have another shape, for example. Blade 4
Is a substantially vertically long parallelogram in the above embodiment, but is not limited to this, and may be another shape, for example. In the above embodiment, the blade body 4 has the blades 12 formed on the lower side. However, the present invention is not limited to this. For example, the blades 12 may be formed on both upper and lower sides. Blade 4
Was made of steel in the previous embodiment, but is not limited to this.
For example, it may be made of cemented carbide or ceramic. Presser body 5
Is arc-shaped in the previous embodiment, but is not limited to this, and may be another shape, for example. The pressing body 5 is made of a synthetic resin in the above embodiment, but is not limited thereto, and may be made of a metal, for example. In the above embodiment, the presser body 5 is provided integrally with the main body 2 so as to retain elasticity. However, the present invention is not limited to this. For example, the presser body 5 may be provided on the main body 2 via an elastic body.

[0008]

[Effects of the Invention] As described above, according to the present invention,
The following excellent effects can be obtained. (1) Consisting of a main body, a blade holding cavity, a blade, and a holding body,
In particular, since the blade body is detachably held by the blade body holding cavity and the holding body, the blade body can be securely held with respect to the main body, and the blade body can be easily replaced. (2) Since the pressing body that can be displaced in the thickness direction of the blade body is provided, the blade body can be inserted into and removed from the blade body holding cavity depending on the displacement amount of the pressing body that is close to the thickness of the blade body. (3) Since the holding body that can press the blade body downward is provided,
Even if the blade body is overloaded, the blade body can move against the elastic pressure of the presser body, and damage to the blade body can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a blade body attaching device according to an embodiment of the present invention.

FIG. 2 is a perspective view from the opposite side.

FIG. 3 is an exploded perspective view.

FIG. 4 is a side view.

FIG. 5 is a cross-sectional plan view.

FIG. 6 is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blade body attachment device 2 Main body 3 Blade body holding cavity 4 Blade body 5 Holding body

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body, a blade holding cavity provided in the main body, the entire upper part and a part of the lower part being open, and a blade inserted from above the blade main body holding cavity and having a blade tip protruding from below. A blade body mounting device comprising: a body; and a pressing body provided on the main body and capable of elastically pressing the blade body downward and displacing in the thickness direction of the blade body.