JPS5811338Y2 - Cutting machine for flooring material - Google Patents

Description

[Detailed description of the invention] This invention relates to a tool that is used to cut unnecessary lengths of floor covering materials such as carpets and synthetic resin sheets that are pasted onto the floor. It is an object of the present invention to provide a cutter that is particularly advantageous when cutting along a curve.

Conventionally, the procedure for attaching floor coverings to a floor surface is, for example, to cut out a rolled sheet to a length longer than the required length, attach it to one side of the floor, bend the excess part on the other side, and place it on the floor. A mark was made on the sheet with a compass opened to an appropriate length from the corner with the rising wall, then the bent sheet was placed horizontally on the floor, and the sheet was opened again in the same manner from the previous mark. Marks were made on the sheet with a compass, and then the sheet was cut along the marks made, and the sheet was pasted up to the corner of the rising wall without any imperfections.

However, when cutting after making a mark, if the rising wall is straight without going in or out or sloping, it is sufficient to cut the sheet at right angles to the side, but in reality it is rare to cut at right angles. Therefore, it is necessary to cut the rising wall in anticipation of the entrance and exit, and it is difficult to paste it completely without skill.In addition, if there is a round pillar, it is necessary to cut it in a circle along this, and the work is difficult. This was becoming increasingly difficult.

Therefore, this idea was devised to solve the above-mentioned difficulties.When cutting, the excess part of the bedding material is bent into a rising wall, so that it is curved along the rising wall. The structure is such that it can be cut immediately with the required curve.

Hereinafter, an embodiment of this invention will be explained with reference to the drawings.The lower surface of the rectangular base 1 is formed horizontally, and the protruding direction of the handle 2 that protrudes laterally like a handle from the upper surface can be displaced with a screw 3. Brackets 4, 4 are provided protrudingly on both sides of the base 1, and a ruler 6 having a blade 5 is supported between the brackets 4, 4 so as to be able to adjust the rotation angle.

The ruler body 6 has an ellipsoidal shape, that is, a football shape, and is supported by brackets 4, 4 at both ends in the major axis direction, and the outer peripheral surface of the thickest part in the minor axis direction is flush with the bottom surface of the base 1. It is formed as follows.

The blade 5 provided on the ruler 6 passes through the center at the thickest part of the ruler 6, is screwed into the outer surface of the ruler 6, and is fixed by pressing with a screw 7.

Furthermore, a scale 8 is provided on the surface of the ruler 6 to indicate the angle of inclination of the blade 5.

Note that the floor surface and the rising wall intersect at almost right angles, so if the angle is slightly out of alignment, an experienced person can adjust the inclination angle of the blade 5 without following the scale 8, so you can force the fine scale. Although it is not necessary to attach 8, the fixed part, that is, the bracket 4
It is sufficient to attach a reference point 9 to the reference point 9.

As shown in FIG. 4, the reference point 9 is used to set the inclination angle θ of the blade 5 when the angle α between the floor surface F and the rising wall W is a right angle, and the angle θ is determined by the following formula. It will be done.

If the radius of the minor axis of the ruler body 6 is γ, and the arc length is m from the point A where the ruler body 6 contacts the floor surface F to the point B where the blade body 5 protrudes, then the arc length m is equal to the point A. It is necessary to make it equal to the length l from to the corner point C, and since the length l is equal to the radius γ, substituting the relationship m=1=γ into equation (I).

Therefore, the reference point 9 is displayed so that the inclination angle θ of the blade body 5 corresponds to equation (II).

If the angle α between the floor surface F and the rising wall W is an acute angle, that is, the wall is leaning slightly toward the indoor side, the length between points A and B will be larger than the radius, so the blade 5 will be If the angle of inclination is obtuse, adjust it in one direction.

For reference, scale 8, which also applies to acute angles and obtuse angles, φ is the angle α
The scale is converted and expressed as an angle α.

This invention has the above structure, and if the intersection angle α between the floor surface F and the rising wall W is a right angle, the ruler body 6 is placed in alignment with the reference point 9, and the excess portion S1 of the floor covering S is bent. Raise, handle 2
Hold the ruler 6 on the floor surface F and the rising wall W from above the bedding material S.
If it moves along the wall W while pressing, it will be cut by the blade 5.

At the time of cutting, it is necessary that the maximum thickness portion of the ruler 6 be in pressure contact with the floor surface F or the like.

When cutting straight lines using the cutter according to this invention, an adapter 10 is attached as shown in FIGS. 5 and 6. A roller 11 is provided on the wall, and the bedding material can be cut along the wall by moving the roller 11 and the ruler body 6 sideways while pressing against the wall.

As described above, when using the device according to this invention, since the ruler is in the shape of a football, a part of the ellipsoid is brought into contact with the curved rising wall and the floor as a surface. Guidance when moving laterally is ensured, and as a result, it is possible to cut not only along straight lines but also along curves, and the curvature of the part corresponding to a round column can be cut. It can be cut instantly with the handle, making it extremely easy to cut into curved shapes.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the cutter according to this invention, Fig. 2 is a plan view of the ruler, Fig. 3 is a sectional view taken along the line X-X in Fig. 2, and Fig. 4 is the blade of the ruler. FIG. 5 is a plan view showing the state in which the adapter is attached to the cutter according to the invention for cutting, and FIG. 6 is a perspective view showing the adapter. 1...Base, 2...Handle, 4...
...Bracket, 5...Blade body, 6...
Ruler, 9...Reference point.

Claims (1)

[Scope of utility model registration request] A handle 2 is provided on a base 1 whose lower surface is flat so that the mounting angle can be adjusted when viewed horizontally, and a ruler 6 shaped like a football-shaped ellipsoid is provided between both brackets 4 protruding from both sides of the base 1. The ruler body 6 is fixed at both ends in the major axis direction so that the rotation angle can be adjusted, and the outer circumferential surface of the ruler body 6 with the maximum thickness in the minor axis direction is attached to the base 1.
The blade body 5 is fixed to the ruler body 6 in such a manner that it passes through the center of the maximum thickness and penetrates the ruler body 6. This cutter for bedding material is provided with a reference point 9 for setting the inclination angle θ of the blade 5 with respect to the corner angle of the floor surface.