JP2021191405A - Wall paper joint cutter - Google Patents

Abstract

To provide a cutter base which can cut wall paper straight without using a straight ruler during work of putting up a joint of the wall paper.SOLUTION: A guide base 1 and an attachment base 10, to which a cutter holder 3 is fixedly attached, are movably connected by a shaft 18 and a hole 4 leading from an upper part to a bottom surface is provided at the guide base to enable a tip of a cutter blade 2 provided at the cutter holder to protrude farther than the bottom surface. A roller 5 which presses wall paper, eliminates friction resistance between the wall paper and the guide base when the cutter blade is moved in a cutting direction, and rotates in the cutting direction is provided near the hole. A roller 6 which is similar to the roller is provided at a position slightly spaced apart from the roller.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cutter that can cut straight without using a straightedge when constructing a wallpaper joint.

Conventionally, in the joint construction of wallpaper, a straightedge was applied to the cut part of the overlapping wallpaper and it was cut straight with a cutter knife.

This had the following drawbacks. Conventionally, a straightedge and a utility knife are always used to cut the joint part of the wallpaper, but the straightedge has two main roles. The first is to cut the joint straight.

The other is to press the wallpaper from above with a straightedge so that the wallpaper can be cut without twisting or wrinkling when cutting the wallpaper with a utility knife. However, joint cutting with a straightedge and a utility knife is dangerous when working at heights, especially on the ceiling, because both hands are blocked.

In addition, since the straightedge cannot be cut in a place narrower than the length of the straightedge, there is an inconvenience such as using a ground wrasse as a substitute for cutting.

Conventionally, an underlay tape has been inserted between the base material and the wallpaper so that the force is too strong and the blade enters the gypsum board as the base material so that the board surface material does not break and peel off. The present invention has been made to eliminate the above-mentioned drawbacks.

Means to solve problems

The guide base and the mounting base on which the cutter holder can be attached and fixed are movably connected with a shaft, and a hole leading from the top to the bottom is provided in the guide base so that the tip of the cutter blade provided in the cutter holder can protrude from the bottom. .. A roller is provided near the hole to hold the wallpaper and eliminate the frictional resistance between the wallpaper and the guide table when the cutter blade is moved in the cutting direction. A roller similar to the above roller is provided at a place slightly further spaced.

The shafts of the two rollers are fixed in a direction extending in the direction perpendicular to the side surface of the cutter blade, and the part where the rollers come into contact with the wallpaper is surface-treated with high frictional resistance or made of a material so that the rollers do not slip sideways. The cutting direction of the blade does not change. Due to the action of the rollers provided in the front and rear, the cutter blade advances straight in the cutting direction.

In addition, a spring material is provided between the guide base and the mounting base so that the cutter blade is automatically stored inside the guide base except during cutting work, and the amount of blade protruding from the bottom of the guide base can be controlled. Provide adjustment screws for this on the guide base and mounting base. This makes it possible to variably adjust the amount of blade protruding from the bottom of the base.

The invention's effect

The above rollers guide the cutter blade straight in the cutting direction, and at least one roller always sits near the cutter blade to hold the wallpaper, so you can pull or twist the wallpaper without using a straightedge. You can cut the joint straight without any trouble.

In addition, the amount of protrusion of the blade can be changed steplessly by tightening the screws, so the depth of the blade that enters the wallpaper can be finely adjusted regardless of the force applied, and the underlay tape that protects the gypsum board that is the base material. It is also possible to construct without using. As described above, by cutting the wallpaper joints straight with one hand without using a straightedge, you can support your body with one free hand even when working at heights.

And if the straightedge is no longer needed, it can be cut straight and clean with one hand even in places narrower than the length of the straightedge. Moreover, if the underlay tape is no longer needed, the cost can be significantly reduced. Improving workability and, above all, ensuring safety will be of great benefit to the construction industry.

It is a perspective view of this invention. It is an exploded perspective view of this invention. It is a perspective view from the lower direction which connected the rollers by the ring shape. It is a perspective view from the lower direction which the direction of a guide roller can change.

The embodiment for carrying out the present invention will be described above with reference to the drawings. It should be noted that the components with the same reference numerals in the present specification shall have substantially the same structure or function.

FIG. 1 is a perspective view showing a configuration as an example of a wallpaper joint cutter according to the present invention. Reference numeral 1 is a guide table 1 constituting the main body, and a hole 4 through which the cutter blade 2 passes is provided from the top to the bottom. By providing the hole 4 at the end on the opposite side of the guide table 1 in the traveling direction, the wallpaper can be cut from the wall during construction. The hole 4 may be a concave gap as long as the blade 2 comes out from the top to the bottom.

At least one roller 5 is provided near the blade 2 that passes through the hole 4 when a force is applied from the upper part of the holder and protrudes from the bottom of the guide table 1 to hold the wallpaper so that the wallpaper does not twist when the wallpaper joint is cut. The shaft 7 of the presser roller 5 extends in the direction orthogonal to the side surface of the blade 2, and the roller 5 rotates in the cutting direction.

The guiding roller 6 is provided slightly away from the holding roller 5 provided on the guiding table 1. The shaft 8 of the induction roller 6 is also extended in a direction orthogonal to the side surface of the blade like the shaft 7, and the surface of the roller 5 and the roller 6 is made of a material that does not slip sideways or is surface-treated so that the blade 2 can be attached to a straightedge. Go straight without twisting the wallpaper like when you let it. Even when an inclined roller is used, the blade 2 advances straight by providing an axis perpendicular to the traveling direction.

In order to adjust the amount of the blade 2 protruding from the bottom surface of the guide base 1, the guide base 1 and the mounting base 10 are movably connected. By tightening or loosening the adjusting screw 9 provided on the guide base 1, the contact position between the screw tip and the mounting base 10 changes, and the movable range of the mounting base 10 can be adjusted. As a result, the amount of protrusion of the blade 1 from the bottom surface of the guide table 1 can be finely adjusted steplessly, which cannot be done with the slider 11, and the wallpaper can be constructed without cutting the base material without using the underlay tape. Can only be cut. The same effect can be obtained by making the cutter holder 3 a double structure and shifting the inside and outside with a screw or the like. All or many of the blades 2 are housed inside the guide table 1 except when cutting with no force applied from above by the storage spring 12.

A laser pointer 13 is provided near the tip of the main body in the traveling direction such as a guide table 1, and the roller 5 and the roller 6 irradiate the extension line on which the blade 2 cuts straight. This makes it possible to connect and cut distances that cannot be reached with a straightedge. This light may be ordinary light and is not limited to coherent light. Further, natural light may be used to illuminate the traveling direction using a lens, a reflector, or the like.

As a convenient use by modifying a part of this structure, the induction roller 6 can be turned and fixed like a tire when turning the handlebar of a bicycle. By doing so, the cutter blade also draws a curve according to the direction of travel of the roller and can cut a circle without using a compass cutter. This structure can cut large arcs and circles that cannot be physically cut with a compass cutter. In addition, the arc can be cut with a radius determined by setting a scale on the rotary table that supports the shaft and setting the angle of the shaft.

Also, instead of the cutter knife 3 provided on the mounting base 10, a writing tool such as a pencil is fixed with the holder fixing screw 14 so that it can be used. Things will be possible. If the guide stand 1 is made of a highly transparent material, the part to be drawn can be seen and it becomes easy to use. When using it for cloth etc., the writing tool should be roulette.

In the above description, the mounting base 10 and the cutter holder 3 having the cutter blade 2 are integrated with the mounting base 10 by the holder fixing screw 14 as a separate configuration, but it may be integrated from the beginning. Further, although the shaft 18 is passed through the connecting hole 19 and connected to the guide base, the blade 2 is projected by providing a rail on the guide base 1 and the mounting base 10 so as to slide, not limited to the rotational movement by the shaft 18. May be good.

Further, if the pressing roller 5 and the guiding roller 6 are connected by an O-ring 15 or the like so as to cover a rubber band, the straightness is further increased. This is to prevent rattling by attracting the rollers to each other.

Further, as an effect produced by connecting the rollers, the contact area between the wallpaper and the rollers becomes significantly larger, which not only makes it difficult to skid, but also makes it less susceptible to the unevenness of the wallpaper surface. As a result, when the amount of protrusion of the blade is determined, the sinking of the contact portion between the roller 5 and the wallpaper of the roller 6 is greatly reduced, and it becomes easier to cut only the wallpaper without cutting the gypsum board.

In addition, even if the rollers are arranged horizontally instead of vertically, both wheels are fixed to the shaft and straightness can be obtained if the rotation speed is the same. The same effect can be obtained by widening the width of one roller.

Although the preferred embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above-described embodiments. That is, it is understood that within the scope of the invention described in the claims, the forms or various modifications that can be conceived by those skilled in the art also belong to the technical scope of the present invention.

1 Guide stand 2 Blade 3 Holder 4 Hole (gap)
5 Pressing roller 6 Induction roller 7 Induction roller shaft 8 Induction roller shaft 9 Adjustment screw 10 Mounting base 11 Slider 12 Storage spring 13 Laser pointer 14 Holder fixing screw 15 Ring type 16 Rotary table 17 Scale 18 Shaft 19 Connecting hole

Claims (1)

The blade protrudes from the main body by movably connecting the main body having a space leading from the upper part to the lower part and having a roller near the main body and a holder provided with a blade and tilting the holder with respect to the main body. Cutter

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