JP2000271901A - Ruler for trimmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to fabricate a square and a rectangle of any size in a short time and with accuracy by making both sides holding a right angle in between in a projecting shape and providing a connecting part with a groove to be fitted to a projecting part of another long side outside of a short side and further, fixing the sliding and tightly fitted short side and another long side into a slot hole in parallel with the long side with a screw. SOLUTION: A set of four rules are clamped in such a way that pieces are wrapped inwardly from the surrounding outside, and base plates with the lower faces arranged in order are fixed with screw so as to immobilize the base plates. Further, a seal 5 is applied to each of the rules in the forward/backward direction and also in the right/left direction and a seal 6 indicating a fabrication size is attached in such a way that the graduation 0 of the seal 6 is set to an arrow mark. In addition, the graduations of all the four rules are set at a numeral obtained by subtracting the diameter of a edge of an already attached straight bit from the size of a fabricated square hole. A longitudinal and a transverse centerline is marked in a part where it is desired that the square hole be drilled in a material to be fabricated and four center needles 7 are set at the marked longitudinal and tranverse centerlines and further, the square hole is drilled using a motor-driven trimmer while the center needles 7 are fixed using a clamp or the like. Thus it is possible to correctly drill a square or a rectangular hole of any size in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to woodworking,
The present invention relates to a ruler for a trimmer used for digging an accurate square hole using an electric trimmer.

[0002]

2. Description of the Related Art A conventional ruler for a trimmer is a method in which only each side serving as a ruler is independently moved in a perpendicular direction to adjust the size of a hole, and limited settings are made because vertical and horizontal sides interfere with each other. It could only be used, and it was only for fixed uses, such as for kamoi and talking. Therefore, in general, a ruler required for square hole processing is manufactured by a plywood or the like each time, and there is a problem in time, labor, and accuracy.

[0003]

SUMMARY OF THE INVENTION Heretofore, in the drilling of woodwork using an electric trimmer, there has been no auxiliary tool for accurately and quickly processing a square or a rectangle of any size. The research was carried out with the task of solving this problem.

[0004]

In order to make it possible to set all dimensions, it is necessary to adopt a structure in which vertical and horizontal sides do not interfere with each other when the dimensions are reduced. Therefore, two right-angled sides (1) of the ruler are formed in a convex shape, and a connecting portion (2) having a groove that fits into the convex portion of the other long side is provided outside the short side so that the short side and the other long side are formed. Adhere and slide. In addition, an interval for maintaining the strength is provided so that the nut (3) can be fixed to the elongated hole (3) parallel to the long side with a nut and a screw (4) from below. By combining these four pieces, it is possible to escape from vertical and horizontal interference and freely enlarge and reduce the square formed inside. Since all four corners are kept at right angles and can be fixed at any position, rectangles and squares of any size within the set ruler body size can be easily set. From the above, we came to the conclusion that it is effective as a trimmer ruler.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The main structure is as described above, but some additional accessories are required for implementation. The seal (5) representing the front, rear, left and right of the ruler, the seal (6) representing the processing dimension, the center needle (7) representing the center of the processing dimension, and the temporary fixing screw hole (8). (A) First, align the trimmer ruler assembled into a set of four pieces with the base plate of the commercially available electric trimmer, wrap it around, and fasten it with screws (4) so that the base plate does not move. (B) Trimmer Place the sticker (5) on the front, rear, left and right sides of each of the trimmer rulers in the normal working state.
(Not required if the base plate is square)
And stick it together. (4) Set the scale to the number obtained by subtracting the diameter of the installed straight bit from the dimension of the square hole to be dug. (All 4 pieces) * If the diameter of the straight bit used is limited, the dimensions of the hole and the scale can be the same. In this case, when sticking the seal (6), adjust the number of the blade diameter to the arrow. (E) Write the vertical and horizontal center lines where you want to dig a square hole in the material to be processed. (F) Trial the unnecessary material and align the four center needles (7) with the center of the drilled hole using a scissors or the like. (G) Align the center needle (7) of the ruler for the trimmer with the vertical and horizontal lines described in (e), and dig the hole with the electric trimmer while fixing the main body with a clamp etc. * Using the temporary fixing screw holes, A method of fixing with a screw or a method of attaching a tree to ease a set can be considered.

[0006]

Since the present invention has the above-described configuration,
In the drilling of woodworking, it was possible to accurately and quickly dig squares or rectangles of any size using an electric trimmer, which helped to improve workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a plan view showing a minimum processing state in which four pieces of the present invention are assembled into one body.

FIG. 3 is a schematic diagram of a maximum machining state of the same.

FIG. 4 is a schematic view of the same rectangular processing state.

FIG. 5 is a seal (6).

[Explanation of symbols]

 (1) Main two sides of ruler body (2) Grooved connecting part (3) Slotted hole parallel to long side (4) Fixing screw (5) Seal indicating front, rear, left and right (6) Seal indicating processing dimensions (7) Center needle to indicate the center of processing dimensions (8) Screw holes for temporary fixing

Claims (1)

[Claims] 1. A plate-shaped ruler (1) having two right-angled convex sides and a connecting portion (2) formed by a groove and a screw are combined into a set of four and slid and fixed at an arbitrary position. A device that can be set as a ruler of an electric trimmer by freely setting the four sides that are rectangular or square rules inside.