JPH0114401Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting ruler for a circular saw, which is a feature guide for an electric circular saw.

The cutting ruler for circular saws of the present invention is configured so that the guide edge can be created by cutting off the edge of the ruler to match the width of the base of the electric circular saw. It has characteristics that can be applied to

The cutting ruler for circular saws according to the present invention provides accurate cutting,
It is designed to allow even amateurs to easily use a circular saw for cutting miter cuts, and it belongs to the field of construction tools exclusively for electric circular saws.

[Conventional technology]

Traditionally, the process of cutting wood based on the internal dimensions of window frames of wooden houses, etc. was to measure the internal dimensions with a difference gauge, then trace each of the measured dimensions again using a difference gauge, and cut the copied line. The common process is to cut using a circular saw.

In addition, in the case of miter cutting work, the process is to copy each dimension onto the wood with a wire, mark it at 90 degrees, mark it with a miter shape, and then manually cut the wood along those lines with a saw.

Copying the dimensions using the difference and cutting using an electric circular saw or a saw requires a considerable amount of experience and knowledge, and is quite a time-consuming task.

Therefore, commercially available electric circular saws come with a metal plate-shaped feature guide as a standard accessory.
The attached feature guide is dimensionally designed to be used only with the electric circular saw, so it is not versatile to other models, and the feature guide is simply a metal plate of a certain width. , it was not possible to perform miter cutting, and it did not have the functionality of making circular saw cutting easier even for amateurs.

There is also Utility Model No. 47-2626 as a crease cutting device. This device performs so-called crease cutting, and consists of a combination of a device for sandwiching plate materials with guide grooves and an electric saw with rails.

[Problem to be solved]

As mentioned above, cutting wood using a conventional electric circular saw requires a considerable amount of technical skill, such as precise dimension copying, familiarity with the use of a cutting edge, and cutting techniques, and it also has the following problems. Ta.

a: In order to copy the torsions and delicate dimensions of pillars such as the interior walls of wooden houses onto materials using a wire and then cut them, technical skill is required and the work is labor-intensive.

b: Even for simple work such as cutting the edge of a material perpendicular to the longitudinal side, you can use a circular saw by measuring the right angle with a difference, drawing the line, calculating the width of the circular saw base, and applying a ruler to it. Ta.

c: In the case of cut-off cutting, it was necessary to determine the dimensions and mark at a 90° angle with a difference or mark with a cut-off shape.

d: Normally, the surface of construction materials is coated with abrasive powder to prevent stains and make it easier to remove stains, but when cutting with a circular saw, the base of the circular saw leaves black stains on the material. Ta.

Therefore, it was sometimes time consuming to remove dirt and ink before installation.

e: Furthermore, conventional electric circular saws come with a safety cover, but the safety cover is designed to make it difficult to see the cutting area, so some people use the safety cover to secure it with a string. It was hot.

Therefore, there has been a need for a means for making the cut point clearly visible when cutting with a circular saw or other parts so that the safety cover is not used with a string attached to it.

f: Also, when cutting a material using a circular saw, there was a problem in that a cut-off portion occurred at the cut end of the material.

g: The above-mentioned Utility Model Publication No. 47-2626 only has a crease cut, and is not configured to allow delicate cuts (if not at right angles) to match the miter cut or inner cut.

As described above, there are various problems in the field when using electric circular saws, and there has been a demand for improvements to circular saws or tools for circular saws that meet the above-mentioned demands.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has devised a cutting ruler for a circular saw, which is a dedicated guide for an electric circular saw, and has the following general configuration.

Here, the cutting ruler for a circular saw according to the present invention has a right-angled rectangular base made of a cuttable transparent or semi-transparent material, and has a rectangular base made of a transparent material or a translucent material, with an interval approximately at the center of the flat surface of the base, and a rear end of the base. Two parallel circular saw base guides are attached at right angles to form circular saw base sliding surfaces on the left and right sides of the circular saw base guides, and the two parallel saw base guides are attached to form circular saw base sliding surfaces on the left and right sides of the circular saw base guides. Two pins are provided on a crimping plate urged upward by a spring at intervals between the circular saw base guides, and a fixing means having a through hole for the pins is provided in the base, and fixed to the rear side of the back surface of the base. A ruler is fixedly attached, and a movable ruler is attached to the front side of the back side so as to be rotatable about a central support shaft and both ends are biased inwardly by a spring. Reference line A parallel to the fixed ruler and reference line B parallel to this with a predetermined width
This is a cutting ruler for circular saws, with the left and right ends of the ruler itself cut at 45° on one side and 90° on the other to match the base width of the circular saw.

The transparent material is made of transparent or translucent synthetic resin such as acrylic resin.

In the cutting ruler for a circular saw of the present invention, the circular saw base sliding surface is formed to have a wider width than the base width of a commercially available portable electric circular saw.

[Effect]

The cutting ruler for a circular saw according to the present invention has the above-mentioned configuration and is used as follows.

First, place your electric circular saw on the circular saw base sliding surface of the circular saw cutting ruler, and align it with the circular saw base guide.

Then, to match the base of the electric circular saw, he rotates the saw blade and cuts off the excess width on the left and right edges of the ruler, thereby creating a ruler that fits his electric circular saw.

The circular saw base sliding surfaces are provided on both sides of the circular saw base guide, so one side is cut at a right angle and the other side is cut at a 45° angle.

Through this self-cutting, the cutting ruler for circular saws matches the position of the saw blade with the edge of the sliding surface of the circular saw base, and once this work is done, it can be used regardless of the type of electric circular saw on the market. It will be applicable.

Therefore, the width of the sliding surface of the circular saw base is the same as the saw blade position of the electric circular saw used, and when the electric circular saw is moved along the circular saw base guide, cuts that match the left and right side edges can be made. You will be able to do it.

Next, we will explain how to use the circular saw cutting ruler that has been prepared in advance in the field.

For example, when cutting a board with a width of about 15 cm at a right angle to a specified size, measure and mark the board, place the circular saw cutting ruler of this invention on the board, align the right end with the mark, and set the reference line A. Align it with the side of the plate material or the edge of a fixed ruler, and crimp the pin that is the fixing means between the base and the material to prevent it from moving, and slide the electric circular saw on the sliding surface of the circular saw base. Cut it off.

The base is made of transparent material, and the safety cover of the circular saw is secured to the front edge, making it easy to see the cutting area.
Moreover, the circular saw base does not directly rub the material, so there is no dirt attached to it, and the right side of the base covers the cut end of the material, so there are no missed cuts, and the circular saw progresses smoothly and easily. Can be cut.

When cutting into a miter cut, the inclination angle of the circular saw can be adjusted and the cutting can be performed in the same manner as described above with an electric circular saw using the sliding surface of the circular saw base on the left side of the base.

Furthermore, when copying the torsion or delicate dimensions of columns such as the internal walls of a wooden house, by copying the delicate dimension angle as a longitudinal line on the material with a difference, and aligning the reference line B or A with that line, The right side edge of the cut will be in a shape that matches the inner diameter, so move the movable ruler against the long side of the material, align the reference line B with the longitudinal line marked on the material, align the cut end, and attach the fixing means. All you have to do is place the electric circular saw on the sliding surface of the circular saw base and cut.

〔Example〕

Next, the present invention will be explained with reference to examples, but the examples are merely examples and are not limited thereto, and various modifications can be made in design, dimensions, and other details.

In the illustrated embodiment, two circular saw base guides 2, 21 are disposed at right angles to the rear end 11 on the surface of a right-angled base 1 made of a transparent material that can be cut, and two circular saw base guides 2, 21 are disposed at a distance of 12 approximately at the center. Circular saw base sliding surfaces 13 and 14 are attached in parallel and formed on both sides.

In the interval 12 between the two parallel circular saw base guides 2 and 21 of the base 1, there is a crimping plate 33 whose rear end 34 is attached to the base 1 and whose tip 35 is vertically movable. is urged upward by a spring 30, and two downward pins 31,
32 are provided, and the pins 31,
The structure has 32 through holes, and the base 1
is placed on the material to be cut 9 and the pressure bonding plate 33 is pushed to cause the pins 31 and 32 to protrude from the through holes and to be inserted into the material to be cut 9 and fixed thereto.
Only when in use, the pin 3 is pressed by the pressure bonding plate 33.
1 and 32 protrude through the small hole (through hole) of the base 1, so it is safe.

The pressure bonding plate 33 is for pressing the two pins 31 and 32 at the same time.

By pressing the pressure bonding plate 33, the pins 31 and 32 are
It protrudes through a small hole in the base 1 and sticks into the material to be cut 9 on the back surface 15 of the base 1 as described later,
The positions of the base 1 and the material to be cut 9 are fixed and determined.

In other words, the pins 31 and 32 and the pressure bonding plate 33 constitute means 3 for fixing the material 9 to be cut.

A fixed ruler 4 is fixedly installed on the rear side of the back surface 15 of the base 1.

Also, on the front side of the back surface 15 of the base 1, there is a safety plate 5.
is provided, and a movable ruler 6 is further provided inside thereof.

Bolts 62 and 63 are installed on both the left and right sides of the movable ruler 6.
are swingably provided in long grooves 16 and 17 bored in the base 1.

Therefore, the movable ruler 6 is rotatable within the length range of the long grooves 16 and 17.

The heads of the bolts 62 and 63 are connected to the upper surface 1 of the base 1.
The bolts 62 and 6 are recessed so as to fit within the wall thickness of the base 1 so as not to protrude.
3 is provided with nuts 64 and 65 to adjust the tightness.

Further, the movable ruler 6 is biased by a spring 66 with both ends facing inward so that the movable ruler 6 rotates without wobbling and is stabilized at a certain position after it is set at a certain position.

The spring 66 biases both sides substantially equally while its biasing force is restricted by the protrusion 67.

The base 1 is provided with a reference line A that is parallel to the fixed ruler 4 and a reference line B that is parallel to the fixed ruler 4 and spaced apart from it by a predetermined width, in alignment with the edge of the movable ruler 6.

In the example, the distance between the reference line A and the reference line B is
The width is 1.5cm, or the width of the difference.

Since the width of the difference is 1.5 cm, it is possible to naturally match the mark made on the material 9 to be cut with the difference if necessary.

The reference lines A and B in the example are formed by cutting out extremely thin grooves and filling them with coloring material, so that they do not peel off and are durable.

The main body is made of transparent acrylic resin, including the base 1, circular saw base guides 2, 21, fixed ruler 4, safety plate 5, and movable ruler 6. The actual size of base 1 before cutting off the left and right edges is 30.8cm wide x
It is 27cm tall and 0.5cm thick.

Further, the wall thickness of the fixed ruler 4 and the movable ruler 6 is 1 cm.

In the embodiment, other fixed rulers 4 and the like in addition to the base 1 are made of a transparent material, but members other than the base 1, such as the fixed ruler 4, etc., may be designed not to be made of transparent materials.

A cutting ruler for a circular saw is placed over the material 9 to be cut, such as a plate, so that it enters the recess formed by the back surface 15 of the base 1, the fixed ruler 4, and the movable ruler 6, but the inside of the recess is free of obstacles. Since it is smooth, the cutting ruler for circular saws can be moved smoothly for positioning.

Although the fixing means for fixing the base 1 and the material to be cut 9 is shown as a horizontal row of two pins, this can be changed to two or more pins or a vertical row of pins.

Further, in the embodiment, a configuration in which two circular saw base sliding surfaces, left and right, are formed is shown, but a configuration in which one of the sliding surfaces is omitted is also included in the present invention.

Next, the cutting ruler for a circular saw of the present invention is combined with an auxiliary tool 8 that enables safer and more stable cutting operations when the ruler is used.

When cutting the material 9 to be cut by placing the electric circular saw on the circular saw base sliding surface 14 of the base 1, the electric circular saw can be cut by simply pushing it forward, but in that case, the thickness of the base 1 The electric circular saw and material 9 will be separated by this amount.

Since the portion of the circular saw base located outside the saw blade is floating above the material 9 to be cut, there is a risk that it may tilt if force is applied unevenly during work.

The auxiliary tool 8 is attached to the outer base portion of the circular saw base located outside the saw blade in order to prevent it from tilting when using the cutting ruler for a circular saw. It is a box that is formed simultaneously with the wall thickness of the base 1 and has an insertion opening for the outer base portion that is provided with a bolt 82 that is detachably attached to the outer base portion.

By attaching the auxiliary tool 8, almost the entire bottom surface of the circular saw base is positioned on the material 9 to be cut at regular intervals,
There is no chance that the cutting operation will be performed tilted.

Needless to say, if the cutting ruler for a circular saw is used in combination with the auxiliary tool 8, it will be easier to use and safer.

However, a circular saw cutting ruler with such a configuration is used by cutting off the left and right side edges at 90° and 45° to match the electric circular saw used.

The saw blade position of the electric circular saw you use matches the left and right side edges, so all you have to do is align the side edges with the cutting line and move the electric circular saw along the circular saw base guide 2. Since the base 1 is made of a transparent material, even in the case of a slightly sloped cutting line, it is easy to make the mark on the material 9 to be cut and the reference lines A and B. Since positioning can be performed while matching, circular saw cutting work can be easily performed.

〔effect〕

Since the cutting ruler for a circular saw according to the present invention has the above-described structure and operation, it has the following unique technical effects.

It is a ruler made of cuttable material, and I cut off the unnecessary side edges with my own electric circular saw in advance to match the blade position with the base sliding surface, so when I use it from now on, I cut off the unnecessary side edges. Easy to cut just by aligning the cutting lines.

Since the base is made of transparent material and equipped with a movable ruler and reference lines A and B, you can work while looking at the material to be cut with the naked eye, and you can use the marks made on the material as is. , it is possible to easily make delicate cuts such as the inner diameter by simply aligning it with a reference line or a movable ruler.

In addition, since the material to be cut can be seen and it is equipped with a movable ruler and reference line, it can be used in various other ways when cutting with a circular saw.

When cutting with a miter cut, cut the miter cut in advance.
The ruler edge is set at 45 degrees, so if you match it with this, you won't need to ink the clasp shape, etc.
Work becomes much more efficient.

Since the circular saw base and the material to be cut do not come into direct contact, the material to be cut will not be contaminated by base pressure.

Although the safety cover of electric circular saws is safe, it has the disadvantage that the cut point cannot be seen, but when the cutting ruler for circular saws according to the present invention is used, the safety cover is locked to the edge of the ruler, so the safety cover is It has the practical advantage of being able to roll up, making the cut location clearly visible, and eliminating the need for dangerous safety covers.

When a circular saw is used, stubs are produced at the cut end, but with the ruler of the present invention, the edge of the base covers the position where stubs would occur, so stubs are less likely to occur.

As described above, the cutting ruler for a circular saw according to the present invention can be applied to various types of commercially available electric circular saws, and has practical value that meets practical requirements.

[Brief explanation of the drawing]

The drawings show an example and embodiment of a cutting ruler for a circular saw according to the present invention, in which FIG. 1 is a top view, FIG. 2 is a back view, and FIG. 3 is a sectional view taken along the line C-C. Figure 4 is a side view, Figure 5 is a side view of the auxiliary device,
FIG. 6 is a perspective view of the device in use. A simple explanation of the symbols, 1... base, 2, 21...
Circular saw base guide, 3...Fixing means, 4...Fixed ruler, 5...Stabilizer plate, 6...Movable ruler, A, B...
...Reference line.

Claims (1)

[Claims for Utility Model Registration] (1) At a distance approximately at the center of the flat surface of a right-angled rectangular base made of a cuttable transparent or translucent material, at right angles to the rear end of said base. Two parallel circular saw base guides are attached, and a circular saw base sliding surface is formed on the left and right sides of the circular saw base guide, and in the interval formed by the two parallel circular saw base guides, The tip side of a crimp plate whose rear end is attached to a base and whose tip is movable up and down is urged upward by a spring, and two pins pointing downward are provided, and a through hole for the pins is provided in the base. A fixing means is provided for fixing the base by placing the base on the material to be cut and pressing the crimp plate so that the pin protrudes from the through hole and stabs, and a fixing ruler is provided on the rear side of the back surface of the base. A movable ruler is fixedly attached and attached to the front side of the back surface so as to be rotatable about a central support shaft and both ends are urged inward by a spring, and the fixed ruler is attached to the base to match the edge of the movable ruler. A ruler that displays a reference line A that is parallel to this and a reference line B that is parallel to this with a predetermined width, and the left and right ends of the ruler are set at 45° on one side and 90° on the other in accordance with the base width of the circular saw. A cutting ruler for circular saws. (2) The cutting ruler for a circular saw according to claim 1, wherein the transparent material is an acrylic material.