JP3080649U - Notch drilling tool - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To form a cut hole in the side surface of a thin metal column having a groove-shaped cross section while leaving a cut piece, and use the remaining cut piece to cut an end of a cross beam inserted into the cut hole. So that it can be fixed,
A thin metal column having a groove-shaped cross section can be easily moved without removing an electric box fixed to a cross beam. SOLUTION: A pair of grips 2, a bladed arm 3, an obtuse V-shaped blade 32 fixed to the bladed arm 3, an arm 4 with a receiving hole, and a receiving hole 4 formed in the arm 4 with a receiving hole.
2, a pivoting plate 5 for pivotally connecting the arm 3 with the blade and the arm 4 with the receiving hole, and an adjusting tool 6.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a notch drilling tool for making a cut hole in the side surface of a thin metal column having a grooved cross section.In particular, a notch is left on the side of a thin metal column having a grooved cross section, leaving a cut piece. The present invention relates to a notch drilling tool that can fix an end of a cross beam inserted into a notch using a notch piece.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 8, a horizontal girder d that partially overlaps and slides and expands and contracts between the side surfaces of left and right thin metal columns a with a grooved cross section, and the both ends of the horizontal girder d is a thin metal with a grooved cross section. The work is performed by fixing to the side surface of the metal column a with a screw f or the like, and attaching and fixing, for example, an electric box e to a cross beam d fixed between the side surfaces of the thin metal columns a having a groove shape on the left and right sides. There is. By the way, the left and right grooved thin metal pillars a whose both ends of the cross beam d are fixed with screws f or the like may be moved in the left and right direction as necessary, and as a result, both ends of the cross beam d The distance between the fixed thin metal pillars a of the right and left groove-shaped cross sections may change.

[0003]

[Problems to be solved by the invention]

 However, in the case of the above-mentioned sliding girder that slides and expands, when an electric box is attached and fixed to this cross-girder, it cannot be slide-elongated because it is fixed at the same time on both sides of the part that slides while overlapping. As a result, when the distance between the side surfaces of the left and right thin metal columns having a groove-shaped cross section was changed, the horizontal beam to which the electric box was attached and fixed could not be slid in the horizontal direction. For this reason, the electrical box that was attached and fixed to the cross beam is removed, and the cross beam can be slid and extended, and the thin metal column on one side to which the end of the cross beam is fixed is moved laterally. After that, the electric box is attached and fixed to the cross beam again, and there is a disadvantage that the work of moving the thin metal column having a grooved cross section to which the end of the cross beam is fixed becomes complicated.

[0004] In view of the above problems, the present invention has been made in order to solve the problems. The purpose of the present invention is to provide a thin metal column having a groove-shaped cross section while leaving the cut pieces. A cut hole is made on the side surface, and the end of the cross beam inserted into the cut hole can be fixed using the remaining cut piece, so that the electric box fixed to the cross beam can be easily removed without removing it. An object of the present invention is to provide a notch drilling tool which can move a thin metal column having a groove shape in cross section.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention pivotally connects the tips of a pair of handles and bends the tips outward, respectively, and pivots the rear end of the bladed arm to the tip of one handle. And a pivot plate for pivotally connecting the rear end of the arm with the receiving hole to the tip of the other handle, and pivoting the arm with the blade and the arm with the receiving hole. A rear side closer to the inner side than the rear end of the bladed arm is pivotally connected via a pivot shaft, and the other end side of the pivot connection plate and a rear side closer to the inner side than the rear end of the arm with the receiving hole. The arm with the blade is inclined outward from the rear end toward the front side, extended toward the front side from there, and bent toward the front end side toward the inside. Then, an obtuse V-shaped blade is provided on the front side surface of the foremost portion on the distal end side of the bladed arm. The tip of the arm with a blade is provided with a stopper piece at the front end of the arm with a blade, and the obtuse V-shaped blade is obtuse when viewed from a plane. It is formed in a V-shape, and the side section of the central part is formed on the inclined blade surface whose front side is inclined in a wedge-like steep angle toward the tip with respect to the back side, and the front side of both width ends is sharp. It is formed as an inclined groove-type blade that projects slightly forward from the acute-angled inclined blade surface, and the obtuse V-shaped central portion of the inclined blade surface is slightly forward of the groove-type blades at both width ends. The arm with a receiving hole is formed so as to protrude, and is inclined inward from the rear end toward the front, extends forward from there, and widens the front side of both side surfaces to the left and right, and widens. A receiving hole into which the blade is inserted is provided on a surface corresponding to the blade on the front side of the arm with the receiving hole. The outer peripheral edge of the receiving hole is formed on a flat surface, and the size of the receiving hole is substantially the same in both widths as the width of the blade. In addition to making the length in the direction sufficiently long, the cut piece bent when the blade is inserted into the receiving hole forms a front inner wall surface and an inclined blade surface of the receiving hole corresponding to the inclined blade surface side. The blade is inserted into the receiving hole when the blade is inserted into the receiving hole, and the rear inner wall surface of the receiving hole corresponding to the back side of the blade and the blade. The adjustment tool is formed so that there is almost no gap between it and the back side of the arm, and adjusts the position of the blade and the receiving hole and the position from the width end of the thin metal pillar to the position of the notch hole. It consists of means attached to the middle part on the surface side of the surface.

Here, as a preferred embodiment, when a cut hole is made in the side surface of the thin metal pillar, the front side of the arm with the receiving hole is cut from the upper or lower end of the pillar to the position of the cut hole. It is preferable to form a mounting screw hole to which one end of the distance bar for detecting the distance is mounted.

[0007]

[Embodiment of the invention]

 Hereinafter, the present invention will be described more specifically based on embodiments of the present invention shown in the drawings. Here, FIG. 1 is a perspective view of the front side of the piercing tool, FIG. 2 is an overall side view of the piercing tool, FIG. 3 is a front view of the front side of the piercing tool, and FIG. FIG. 5 is a sectional view of a main part of the drilling tool at the time of cutting, FIG. 6 is a diagram showing a use state of the drilling tool, and FIG. FIG. 7 (B) is a cross-sectional view showing a mounting state of a cross beam after making a cut hole in a side surface of a thin metal column (cross section C type), and FIG. It is a plane sectional view showing the attachment state of the cross beam after making a cut hole in the side of a thin metal pillar of a slot type (C type section).

In the drawing, a cutting hole drilling tool 1 is a tool for forming a cutting hole c while leaving a cutting piece b on a side surface of a thin metal column a having a cross-sectional groove shape (C-shaped cross section). Arm 3, obtuse V-shaped blade 32 provided on the distal end side of bladed arm 3, arm 4 with receiving hole, receiving hole 42 formed in arm 4 with receiving hole, arm 3 with blade and receiving hole It is mainly composed of a pivot plate 5 for pivoting the arm 4 and an adjusting tool 6, and the like.

When the pair of grips 2 are used to form the cut holes c on the side surface of the thin metal pillar a having a cross-sectional groove type (C-shaped cross section) with the cut hole drilling tool 1, A tubular gripping board 21 is attached to a portion to be gripped by hand, especially on the outer periphery on the base end side directly gripped by each of the right and left hands. The pair of grips 2 are slightly bent inward near the grip board 21 side.

The pair of handles 2 approach each other in a V-shape toward the distal end, and are bent outward at an obtuse angle near each of the distal ends. A pair of grips 2 are pivotally connected by a pivot shaft 22 at a portion that bends near the distal end, and the pair of grips 2 rotates about the pivot shaft 22 near the distal end and opens and closes inward and outward. It has become.

A rear end of the arm 3 with a blade is rotatably connected via a connection shaft 31 to a front end bent at an obtuse angle toward the outside of the handle 2. The bladed arm 3 is bulged inward from the rear end connected by the connecting shaft 31 toward the front, and the rear side bulging inward is connected to the pivoting plate 5 via the pivot shaft 51. It is rotatably connected to one end. The bladed arm 3 has a structure in which the arm 3 rotates about the rear pivot 51 and opens and closes inward and outward.

The bladed arm 3 extends obliquely outward from the rear toward the front, and then extends straight forward with the cut hole c formed therein, and then has its front end formed at a right angle toward the inside. Bent. The length of the tip side of the bladed arm 3 that is bent inward is longer than the groove depth of the thin metal pillar a of the cross-sectional groove type (C-type cross section), and is sufficiently long to reach the side surface portion on the groove bottom side. have.

An obtuse V-shaped blade 32 is provided on the front side surface of the distal end portion of the distal end of the bladed arm 3 that is bent inward from the distal end of the bladed arm 3 toward the inside. The protruding portion is detachably provided by a fixing tool 32d such as a screw or a bolt and is replaceably provided. That is, when the blade 32 is damaged by use, it can be replaced with another new blade 32.

The tip end of the blade 32 is slightly inclined toward the rear side in a state where the cutting hole c is opened. The blade 32 cooperates with a receiving hole 42 to be described later, and has a function of directly opening the cutout hole c while leaving the cutout piece b on the side surface of the thin metal attribute column a having a cross-sectional groove shape (C-shaped cross section).

The front end of the bladed arm 3 in which the blade 32 is fixed to the front side surface of the frontmost portion is a stopper piece 33 formed substantially at right angles to the partially protruding blade 32. ing. When the blade 32 enters the receiving hole 42, the stopper piece 33 contacts the surface of the outer peripheral edge 43 of the receiving hole 42 to prevent the blade 32 from entering the receiving hole 42 more than necessary.

The blade 32 has an obtuse V-shape when viewed from a plane, and has a side cross-section at a central portion in which a front surface side is inclined in a wedge shape toward a front end with respect to a rear surface side 32c at a steep acute angle. Formed on the blade surface 32a, the surface sides of both width ends thereof are formed as grooved blades 32b, 32b having a near-90-degree inclination and slightly projecting forward with respect to the steeply inclined blade surface 32a. The central portion of the obtuse V-shape of the inclined blade surface 32a projects slightly forward from the groove-shaped blades 32b, 32b at both width ends.

The blade 32 is formed on the inclined blade surface 32 a having a steep acute angle on the surface side, so that a notch c can be formed in the side surface of the thin metal column a having a groove-shaped cross section (C-shaped cross section). The side surface of the thin metallic column a is cut into three sides of a rectangular shape by the inclined blade surface 32a and the respective groove-shaped blades 32b, 32b at both width ends, but one side corresponding to the surface side of the inclined blade surface 32a is cut. The notch b is bent without causing the cut piece b to remain on the side surface of the thin metal pillar a.

The rear end of the arm 4 with the receiving hole is provided at the front end where the arm 3 with the blade is bent at an obtuse angle toward the outside of the other handle 2 with respect to the one handle 2 to which the front end is connected. It is pivotally connected via a connecting shaft 41 so as to be freely rotatable.

The arm 4 with the receiving hole is inclined inward toward the front from the rear end connected by the connection shaft 41, and the rear side inclined inward is connected via the pivot shaft 52. The other end of the pivot plate 5 is pivotably connected to the other end. The arm 4 with the receiving hole is structured so as to rotate about the pivot 52 at the rear and open and close inward and outward.

The arm 4 with a receiving hole extends straight forward from a rear portion thereof with a notch c formed in the front. Also, the front side of the arm 4 with the receiving hole is widened to the left and right, and both sides are widened to the left and right. The surface corresponding to the blade 32 on the front side of the arm 4 with the receiving hole. Has a receiving hole 42 formed therein. The receiving hole 42 has a function of cooperating with the blade 32 to directly open the cut hole c while leaving the cut piece b on the side surface of the thin metal pillar a having a cross-sectional groove shape (C-shaped cross section). .

The receiving hole 42 is a portion where the blade 32 enters the hole when the cut hole c is opened while leaving the cut piece b on the side surface of the thin metal pillar a having a cross-sectional groove shape (C-shaped cross section). The surface of the outer peripheral edge 43 of the hole is slightly higher than the surface of the arm 4 with the receiving hole except the front side, and is formed in a flat surface. The stopper piece 33 of the arm 3 with the blade comes in contact with a part of the surface of the outer peripheral edge 43 of the hole.

The size of the receiving hole 42 is substantially the same, with both widths being slightly longer than both widths of the blade 32, but the length in the front-rear direction corresponding to the thickness direction of the blade 32 is sufficient. In particular, the notch b bent when the blade 32 is inserted into the receiving hole 42 is formed between the front inner wall surface 42a of the receiving hole 42 corresponding to the inclined blade surface 32a and the inclined blade surface 32a. In this case, the gap is long enough to form a sufficient gap.

When the blade 32 is inserted into the receiving hole 42, there is almost no gap between the rear inner wall surface 42 b of the receiving hole 42 corresponding to the back surface 32 c of the blade 32 and the back surface 32 c of the blade 32. The rear inner wall surface 42b of the receiving hole 42 is formed on an inclined surface parallel to the slightly inclined back surface side 32c of the blade 32 so as not to generate. The inner wall surface 42b on the rear side of the receiving hole 42 is formed as an inclined surface in a direction expanding toward the inner side of the hole.

Mounting screw holes 44 are formed on both side surfaces on the front side of the arm 4 with receiving holes. The mounting screw hole 44 is screwed and mounted on one end side of the distance bar 44a. The distance bar 44a detects the distance from the upper end or the lower end of the column a to the position of the cut hole c when the cut hole c is formed in the side surface of the thin metal pillar a having a groove-shaped cross section (C shape in cross section). It is used as a guide for the occasion.

The pivoting plate 5 allows the arm 3 with the blade connected to the tip of one handle 2 and the arm 4 with the receiving hole connected to the tip of the other handle 2 to be rotatable inward and outward. One end of each of the two ends is provided with a rear portion of the bladed arm 3 via a pivot shaft 51, and the other end is provided with a rear portion of the arm 4 having a receiving hole via a pivot shaft 52. Are connected to open and close freely inward and outward, respectively.

An adjuster 6 is attached to an intermediate portion on the inner surface side of the arm 4 with the receiving hole. The adjusting tool 6 has a function of adjusting the position of the blade 32 and the receiving hole 42 and the position from the width end of the thin metal column a having a cross-sectional groove type (C-shaped cross section) to the position of the cutout hole c.

The adjustment tool 6 is composed of, for example, a substrate 61 having an L-shaped cross section and left and right adjustment screws 62 screwed into screw holes of the substrate 61, respectively. The left and right adjustment screws 62 have their heads in contact with the width ends of the thin metal pillar a. The adjustment tool 6 is adjusted by turning left and right adjustment screws 62 to adjust the length of the protrusion from the substrate 61.

Next, a description will be given below of a method of using the notch drilling tool based on the configuration of the embodiment of the present invention.

In the case where a horizontal girder d is attached and fixed between the left and right thin metal columns a having a groove-shaped cross section (C-shaped cross section) and an electric box e is fixed to the horizontal girder d, for example. First, the adjuster 6 of the cutting hole drilling tool 1 is adjusted to adjust the distance from the width end of the thin metal pillar a having a cross-sectional groove shape (C-shaped cross section) to the position of the cut hole c on the side surface.

Further, the distance bar 44 a is mounted on the mounting screw hole 44 of the arm 4 with the receiving hole of the cutting hole drilling tool 1, and the distance rod 44 a from the upper end or the lower end of the thin metal pillar a having a cross section (C section) is formed. The distance to the position of the cut hole c is adjusted.

After these adjustment operations are completed, the cutting is performed using the cutting hole drilling tool 1 on the side surface of the thin metal pillar a of each cross-sectional groove type (cross-section C type) while the cutting pieces b are left. Open hole c.

The outer peripheral edge 43 side of the receiving hole 42 of the arm 4 with the receiving hole of the cutting hole drilling tool 1 is brought into contact with the outer side surface of the thin metal column a having a cross-sectional shape (C type in cross section), and the cutting hole drilling tool is formed. After inserting the blade 32 at the tip end of the bladed arm 3 into the groove inner side surface of the thin metal column a having a cross-sectional groove type (C-shaped cross section), the gripping disks 21 of the pair of grips 2 are gripped by hand. Squeeze inside.

The arm 3 with the blade and the arm 4 with the receiving hole connected to the tips of the pair of grips 2 are relatively inwardly centered on the pivot shafts 51 and 52 at both ends of the pivot plate 5. Turn around. In this case, the outer peripheral edge 43 side of the receiving hole 42 of the arm 4 with the receiving hole is in contact with the outer side surface of the thin metal column a having a groove-shaped cross section (C-shaped cross section). The blade 32 at the tip moves toward the inner side surface of the groove of the thin metal pillar a having a groove-shaped cross section (C-shaped cross section).

Then, the V-shaped tip of the inclined blade surface 32 a of the blade 32 abuts on the inner side surface of the groove of the thin metal pillar a, and the first side of the side surface is cut first, and then the inclined blade The groove-type blades 32b, 32b at both width end sides of the surface 32a simultaneously cut the second side and the third side perpendicular to the first first side. In this way, three sides are cut out of the four sides of the square of the cut hole c.

The cut piece b in which three sides of the rectangular shape are cut is bent around a non-cut side on the front side of the inclined blade surface 32a. The blade 32 having three sides cut into the rectangular shape of the cut hole c enters the receiving hole 42 and stops when the stopper piece 33 at the tip of the bladed arm 3 comes into contact with the outer peripheral edge 43 of the receiving hole 42. At this time, the blade 32 entering the receiving hole 42 pushes the bent cut piece b between the inclined blade surface 32a and the front inner wall surface 42a of the receiving hole 42.

In this manner, a cut hole c is formed on the side surface of the thin metal column a having a groove-shaped cross section (C-shaped cross section) while leaving a cut piece b. Hereinafter, by repeating the same operation, it is possible to form the cut hole c while leaving the cut pieces b on the side surfaces of the plurality of thin metal pillars a having a groove-shaped cross section (C-shaped cross section).

Then, after a cutout hole c is opened leaving a cutout piece b on the side surface of the thin metal column a having a plurality of groove-shaped cross-sections (C-shaped cross section), the cross beam d is passed through each cutout hole c. Attachment, by inserting a screw f from the surface of the cut piece b of the thin metal pillar a of the cross-sectional groove type (cross-section C type) on one end side to the cross beam d on the back side, a plurality of cross beams d It can be attached and fixed between the side surfaces of the thin metal pillar a having a groove-shaped cross section (C-shaped section). Finally, the work is completed by attaching the electric box e to the cross beam d.

It should be noted that the present invention is not limited to the embodiment of the above-described invention, and it is needless to say that various modifications can be made without departing from the spirit of the invention. In the above-described embodiment, the case where the mounting screw holes 44 are formed on both side surfaces on the front side of the arm 4 with the receiving hole has been described, but may be omitted as necessary.

[0039]

[Effect of the invention]

 As is clear from the above description, according to the cutting hole drilling tool according to the present invention, a cutting hole can be formed in the side surface of the thin metal column having a groove-shaped cross section while leaving the cutting piece. One end of the cross girder inserted into the cut hole can be fixed using screws, etc., using the cut pieces left by the sex column, and the cuts made using the cut pieces left by the thin metal pillar on the other side. The other end of the cross beam can be locked by inserting the other end of the cross beam into the hole. Since the locked side is relatively slidable, the thin metal pillar having a groove-shaped cross section can be easily moved without removing the electric box fixed to the cross beam.

In the case where a plurality of cross beams are continuously attached to the side surfaces of a plurality of continuous thin metal columns having a groove shape in a cross section, the cutting tool for cutting the holes is used by using a cutting tool according to the invention. By making incisions in the side surfaces of a plurality of grooved thin metal pillars, one cross beam can be attached and fixed by penetrating the side surfaces of a plurality of continuous thin metal pillars. It is very practical and useful, for example, it is possible to carry out efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view of a front part side of a cutting hole drilling tool showing an embodiment of the present invention.

FIG. 2 is an overall side view of a cutting hole drilling tool showing an embodiment of the present invention.

FIG. 3 is a front view of a front side of a cutting hole drilling tool showing an embodiment of the present invention.

FIG. 4 is a plan view of the front side of the cutting hole drilling tool showing the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part at the time of cutting showing an embodiment of the present invention.

FIG. 6 is a view showing a use state of a notch drilling tool showing an embodiment of the present invention.

FIG. 7A is a cross-sectional view of a cross girder after forming a cut hole in a side surface of a thin metal column having a groove-shaped cross section (C-shaped cross section) using a cut hole drilling tool showing an embodiment of the present invention; It is a plane sectional view showing an attachment state. (B) shows a cross girder after cutting holes in the side surfaces of a plurality of continuous thin metal columns having a cross-sectional groove type (cross-sectional C type) using a cutting hole drilling tool according to an embodiment of the present invention. It is a plane sectional view showing an attachment state.

FIG. 8 is a conventional explanatory diagram.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 cutting hole drilling tool 2 handle 21 gripping plate 22 pivot shaft 3 arm with blade 31 connecting shaft 32 blade 32a inclined blade surface 32b groove type blade 32c back side 32d fixing tool 33 stopper piece 4 arm with receiving hole 41 connecting shaft 42 receiving Hole 42a Front inner wall surface 42b Rear inner wall surface 43 Outer edge 44 Mounting screw hole 44a Distance bar 5 Pivot plate 51 Pivot shaft 52 Pivot shaft 6 Adjusting tool 61 Substrate 62 Adjusting screw a Cross-sectional groove type (C-shaped section) ) Thin metal pillar b Cut piece c Cut hole d Cross beam e Electric box f Screw

Claims (2)

[Utility model registration claims] 1. A front end of a pair of handles is pivotally connected to each other, and the front ends thereof are bent outward, respectively. A rear end of an arm with a blade is pivotally connected to the front end of one of the handles, and the other handle is connected. A pivot plate is provided at the tip to pivotally connect the rear end of the arm with a receiving hole and pivotally connects the arm with a blade and the arm with the receiving hole, and one end of the pivot plate and a rear end of the bladed arm. A rear side closer to the inner side is pivotally connected via a pivot shaft, and the other end side of the pivot connection plate and a rear side closer to the inner side than the rear end of the arm with the receiving hole are pivotally connected via a pivot shaft. The bladed arm is inclined outwardly from the rear end toward the front side, extended toward the front side from there, bent and formed with the front end side inward, and the tip side of the bladed arm. V-shaped blade on the front side of the tip of the arm Provided by protruding part,
A stopper piece is formed at the front end of the foremost part of the bladed arm, the obtuse V-shaped blade is formed in an obtuse V-shape when viewed from a plane, and the side cross section of the center portion is a back surface. An inclined groove formed on the inclined blade surface whose front side is inclined in a wedge-like shape at the acute angle toward the tip, and the front surface side of both width ends is slightly projected forward with respect to the acute angled inclined blade surface. And the central portion of the obtuse V-shape of the inclined blade surface is formed so as to protrude slightly forward from the groove-type blades at both width ends thereof, and the arm with the receiving hole is directed forward from the rear end. The front side of the both sides is widened to the right and left, and the front side of the arm with the widening receiving hole is widened to the left and right. Forming a receiving hole into which is inserted, and forming an outer peripheral edge of the receiving hole on a flat surface; When both width lengths are substantially the same as both width lengths of the blade, the length in the front-rear direction corresponding to the thickness direction of the blade is made sufficiently long, and the blade is inserted into the receiving hole. A notch bent into a shape such that a gap is formed between the front inner wall surface of the receiving hole corresponding to the inclined blade surface side and the inclined blade surface so as to form a gap enough to be inserted therein, When the blade and the receiving hole are inserted into the receiving hole, there is almost no gap between the rear inner wall surface of the receiving hole corresponding to the back surface of the blade and the back surface of the blade. An incision drilling tool, characterized in that an adjusting tool for adjusting a position and a width end of a thin metal pillar to a position of an incision hole is attached to an intermediate portion on an inner surface side of an arm with a receiving hole. 2. A distance for detecting a distance from an upper end or a lower end of a pillar to a position of a notch hole when a notch hole is formed in a side surface of a thin metal pillar on both sides of a front side of an arm with a receiving hole. 2. A notch drilling tool according to claim 1, wherein a mounting screw hole for mounting one end of the rod is formed.