CN-113894330-B - Reaming guide supporting piece assembling and disassembling type perforating device

Abstract

A hole-enlarging guide supporting piece assembling and disassembling type hole-opening device is assembled on the front end part of a transmission shaft of an electric drill chuck, a front end bolt part and a front end flywheel are arranged on the front end part of the transmission shaft, a flywheel nut is spirally jointed on the transmission shaft on the lower side of the front end flywheel, a plurality of jointing rods are clamped on the front end flywheel at a certain interval, the lower end is blocked by the front surface of the flywheel nut, a spiral spring and a dust-preventing scattering cap are sequentially jointed on the transmission shaft which is integrally formed on the lower end of the front end bolt which is spirally jointed/separated with/from a hole-opening main body on the outer side, a conical fastener loading rod with a screw part at the upper end is integrally formed on the upper end of the front end bolt part, a conical fastener ejection spiral spring with a conical fastener with a narrow upper part and a wide lower part and a plug hole penetrating on the central line is sequentially clamped and jointed on the upper side of the conical fastener, and a plurality of guide supporting pieces are assembled and disassembled through the assembling and disassembling type hole-opening device part at a certain interval on the outer side of the conical fastener.

Inventors

• Pu Zhongtai

Assignees

• 朴锺泰
• 朴锺泰

Dates

Publication Date

20260421

Application Date

20211025

Priority Date

20201026

Claims (9)

1. 1. A hole-enlarging guide support piece assembling and disassembling type hole-opening device is assembled on the front end part of a transmission shaft (12) of an electric drill (11) chuck, a front end bolt part (16) and a front end flywheel (18) are arranged on the front end part of the transmission shaft, a flywheel nut (19) is spirally jointed on the transmission shaft (12) at the lower side of the front end flywheel (18), a plurality of joint rods (19-1) are clamped on the front end flywheel (18) at certain intervals, the lower end is blocked by the front surface of the flywheel nut (19), an integrated transmission shaft (12) is formed on the lower end of the front end bolt part (16) which can be spirally jointed/separated with a hole-opening main body (20) at the outer side, a spiral spring (15) and a dust-proof flying cap (25) are sequentially combined, a conical fastener loading rod (30) with a screw part (31) at the upper end is integrally formed on the upper end of the front end bolt part (16), a conical fastener is clamped on the conical fastener loading rod (30), a conical fastener is clamped on the upper side of the hole-opening main body (20) by a spiral spring (35) and a conical fastener (40) which is formed at the upper and lower part of the conical fastener loading rod (40) at certain intervals, and the conical fastener is assembled and disassembled by assembling and disassembled by the supporting piece assembling and disassembling device (50) according to certain intervals; The means (60) for attaching the reamer guide support plates (50:50-1, 50-2, 50-3) to the exterior of the conical fastener (40) is one of two ways: a, forming a plurality of buckling grooves (62) on the outer surface of a conical fastener (40) at certain intervals on a horizontal central line, wherein the upper end and the lower end of each buckling groove (62) are provided with combining grooves (61-1, 61-2) which are arranged on a straight line, a magnet filling groove (63) provided with a screw groove (63-1) is respectively formed between each buckling groove (62) and each combining groove (61-1, 61-2), and a disc-shaped magnet (64) is twisted on each magnet filling groove (63) by a twisting bolt (64-1); In the mode b, a plurality of buckling grooves (62) are formed on the horizontal central line outside the conical fastener (40) at certain intervals, the upper end and the lower end of each buckling groove (62) are provided with combining grooves (61-1, 61-2) which are formed on a straight line, a buckling ball accommodating chamber (70) is drilled on one side surface of each buckling groove (62) in the conical fastener (40) from the outer surface of the conical fastener (40) to the buckling groove (62) in a communicable manner, a screw part (71) is arranged on the inner periphery of the buckling ball accommodating chamber (70), and a buckling ball (72) and a spiral spring (73) are sequentially filled in the buckling ball accommodating chamber (70) to spirally joint a tension adjusting bolt (74).
2. 2. The hole drilling device as claimed in claim 1, wherein the hole-enlarging guide support piece (50) is formed in an inclined rectangular shape and has a length equal to or similar to the outer surface of the conical fastener (40), and the center portion of the front end face is formed with a convex engagement portion (51) protruding.
3. 3. The reaming guide supporting sheet detachable perforating apparatus as claimed in claim 1, characterized in that the reaming guide supporting sheet (50) is formed with a width (W) of the reaming guide supporting sheet (50) in a narrower width (W1), a middle width (W2), a wider width (W3).
4. 4. The reaming and guiding support sheet detachable perforating apparatus as claimed in claim 1, characterized in that the reaming and guiding support sheet (50) is formed of a metal product or a synthetic resin product.
5. 5. A reaming guide support blade removable tapping device as claimed in claim 1, characterized in that the conical fastener (40) is also fitted with a release-preventing washer (65) on its upper face.
6. 6. The hole drilling device for detachable hole drilling of the hole drilling guide support piece according to claim 2, wherein the hole drilling guide support piece (50) is characterized in that a fastening convex part (51) formed by protruding the center part of the front end surface is also provided with a fastening hole (52) of a transverse through hole.
7. 7. The hole-enlarging guide-support-piece detachable hole opening device according to claim 1, wherein in the form a, the engagement groove (62) and the coupling groove (61-1, 61-2) formed in the conical fastener (40) are formed deeper than the coupling groove (61-1, 61-2).
8. 8. The hole drilling device according to claim 5, wherein in the aspect b, a separation preventing washer (65) further assembled to an upper end surface of the conical fastener (40) is formed by connecting a washer loading groove (67) to the bearing housing chamber (42) in the upper end surface of the conical fastener (40), and the separation preventing washer (65) having a central through hole is assembled by screwing a screw bolt (66) to the washer loading groove (67).
9. 9. The hole-enlarging guide-support-piece detachable hole opening device according to claim 1, wherein the snap ball receiving chamber (70) communicably drilled from the outer surface of the conical fastener (40) to the snap groove (62) is formed such that the front end portion (71-1) of the snap ball receiving chamber (70) is smaller than the diameter of the snap ball (72).

Description

Reaming guide supporting piece assembling and disassembling type perforating device [ Field of technology ] The present invention relates to a hole-enlarging guide support-piece-detachable hole-forming device for improving a hole-forming device for forming a hole of a predetermined size in a flat plate such as a ceiling by attaching the hole-forming device to an electric drill, and for forming a hole of a larger size (diameter) in a hole formed in a ceiling. It is further more specific that the method comprises, The front end of the transmission shaft assembled on the electric drill chuck is provided with a front end bolt part and a front end flywheel, the flywheel nut is spirally jointed on the transmission shaft at the lower side of the front end flywheel, a plurality of jointing rods are clamped on the front end flywheel at certain intervals, the lower end is blocked by the front surface of the flywheel nut, a spiral spring and a dust-proof flying cap are sequentially jointed on the transmission shaft which is integrated on the lower end of the front end bolt of which the outer side can be spirally jointed/separated with the perforating main body, a conical fastener loading rod with a screw part at the upper end is integrated on the upper center of the front end bolt part, a conical fastener ejection spiral spring and a conical fastener with more narrow upper part and wide lower part and penetrating through a plug hole on the central line are sequentially clamped and jointed on the conical fastener loading rod, And a hole opening device for assembling and disassembling the plurality of hole-enlarging guide support pieces by separating them at a certain interval by the assembling and disassembling device part. [ Background Art ] The hole drilling device used for electric drills is mainly used for drilling holes of a predetermined size in a flat plate such as a ceiling when various devices such as an electric lamp, a speaker, and a fire detector are buried in the flat plate. The prior art hole opening devices are korean patent publication No. 20-1990-10985 and patent publication No. 10-1994-10892, and public patent publication No. 10-2004-74943 and registered patent No. 10-0473035, etc. These prior art tapping devices 10 are described below with reference to fig. 1. The front end of the drive shaft 12 mounted on a chuck (not shown in detail) of the electric drill 11 is integrally formed with a front end bolt portion 16 and a front end flywheel 18, the drive shaft 12 at the lower end of the front end flywheel 18 is spirally engaged with a flywheel nut 19, and the front end flywheel 18 is interposed with a plurality of coupling rods 19-1 having the lower end thereof caught by the front face of the flywheel nut 19 at a predetermined interval. A center drill 21 is provided at the front center of the front end bolt 16, and the hole body 20 can be screwed to and separated from the front end bolt 16 by a fastening nut rod provided at the center. The transmission shaft 12 on the lower side of the conical head 17 is provided with a dust-scattering prevention cap 25 which is arranged (fitted) so as to cover the outside of the opening main body 20 in a state where the support ring 27 is sandwiched by the support portions 26. When a hole is drilled in the ceiling 1 using the hole drilling device 10 formed as described above, the electric drill 11 is started with the center drill 21 fixed at a predetermined position, and the hole drilling main body 20 is rotated to drill the conventional hole 2 of a predetermined size (diameter). However, if the hole 3 to be expanded having a larger diameter than the conventional hole 2 is to be drilled by using the conventional hole drilling device formed and used as described above, the following problems are caused. The conventional small-diameter perforated body 20 is assembled by introducing a square material (not shown in detail) into the interior (upper side) of the ceiling 1 through the conventional hole 2 of the small diameter (R1) bored in the ceiling 1, fixing the ceiling 1 and the square material (not shown in detail) by fixing means such as a long bolt screw (not shown in detail), and then replacing the conventional small-diameter perforated body 20 with another perforated body 20 having a large diameter. As described above, in a state where the ceiling 1 and the square (not shown in detail) are fixed together by the fixing means (the long bolt screw 6), the center drill (not shown in detail) is inserted through the conventional hole 2, the electric drill 11 is started, the center drill (not shown in detail) and the hole-forming main body 20 are simultaneously operated (rotated), and then the hole is drilled in the square (not shown in detail) by the center drill (not shown in detail), and the hole-forming main body 20 is used to drill the expansion scheduled hole 3 of the large diameter (R2). When the hole 3 to be expanded having a large diameter (R3) is drilled in the ce