KR20230163793A - A hole saw disk emission apparatus for Hole saw system - Google Patents

Abstract

The present invention perforates the perforated plate that occurs when drilling (drilling) a hole in a ceiling, etc., inside the hole saw body, which is mounted on an electric drill and used to drill (drill) a hole of a predetermined size in a flat plate such as a ceiling. The goal is to provide a perforated plate discharge device for a hole saw device that can automatically discharge the material to the outside of the hole saw body while completing the process.
In the present invention, a nose bolt and a nose flywheel are integrally formed at the front end of a drive shaft mounted on an electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and the lower end of the nose flywheel is the front of the flywheel nut. In the hole saw device, a plurality of binding rods are inserted at regular intervals so as to be held in, and the hole saw body is attached and detached by screwing/separating on the outside of the nose bolt;
The hole saw body is characterized by installing a perforated plate discharge device capable of automatically discharging the perforated plate generated when drilling a hole in the ceiling, etc., to the outside of the hole saw main body.
The present invention allows the perforated plate generated when drilling a hole in the ceiling, etc. inside the hole saw body to be automatically discharged to the outside of the hole saw body at the same time as the perforation is completed by the perforated plate discharge device,
As in the past, after completing the perforation, the inconvenience of having to forcibly pull out (eject) the perforated plate stored inside the hole saw body using a separate tool is eliminated. By eliminating unnecessary waste of time and shortening the drilling work, the drilling work can be performed quickly and smoothly. In particular, when the perforated plate stored inside the hole saw main body is forcibly withdrawn (ejected) as in the past, the hole saw main body It can be carried out safely while preventing safety accidents such as hand injuries due to the saw blade formed on the upper periphery of the machine.

Description

{A hole saw disk emission apparatus for Hole saw system}

The present invention perforates the perforated plate that occurs when drilling (drilling) a hole in a ceiling, etc., inside the hole saw body, which is mounted on an electric drill and used to drill (drill) a hole of a predetermined size in a flat plate such as a ceiling. It relates to a perforated plate discharge device for a hole saw device that can automatically discharge the material to the outside of the hole saw body at the same time as completing the process.

To explain this in more detail, a nose bolt and a nose flywheel are integrally formed at the tip of the drive shaft mounted on an electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and the bottom of the nose flywheel is a flywheel. A plurality of binding rods are installed at regular intervals so that they are held in the front of the wheel nut, and on the outside of the nose bolt, the hole saw body can be attached/detached by screwing/separating, but a hole is drilled in the ceiling, etc. inside the hole saw body. The purpose is to provide a perforated plate discharge device for a hole saw device, which is characterized by installing a perforated plate discharge device capable of automatically discharging the perforated plate generated when filing (perforating) to the outside of the hole saw main body.

The hole saw device, which is attached to an electric drill, is mainly used to drill holes of a certain size in a flat surface, such as a ceiling, in order to install various devices such as lights, speakers, and fire extinguishers by embedding them in the flat surface, such as a ceiling.

Conventional hole saw devices include domestic utility model publication number 20-1990-10985, patent publication number 10-1994-10892, published patent publication number 10-2004-74943, and registered patent number 10-0473035. This is known.

In these conventional hole saw devices, a nose bolt and a nose flywheel are formed integrally at the tip of a drive shaft mounted on an electric drill, a flywheel nut is screwed to the nose bolt at the bottom of the nose flywheel, and the bottom of the nose flywheel is screwed. A plurality of binding rods held in front of the flywheel nut are inserted at regular intervals.

A coil spring is installed in the drive shaft mounted on the electric drill, and a tightening butterfly nut is screwed to the bolt part. A center drill is installed in the front center of the nose bolt, and a hole saw is installed on the outside of the nose bolt outside of the center drill. The main body is mounted by a number of binding rods and flywheel nuts that are inserted into the nose flywheel.

On the lower side of the conical head, on the outside of the drive shaft, a dust scattering prevention cap is supported with a support bearing installed and is installed (mounted) to surround the outside of the hole saw body.

When drilling a hole in the ceiling using a conventional hole saw device formed in this way, the drive shaft and hole saw body are rotated by the operation of the electric drill while the center drill is fixed at a predetermined position to cut the hole to a predetermined size (diameter). You can drill a hole in it.

However, the conventional hole saw device formed and used as described above is not equipped with the function of collecting and filtering dust generated when the center drill rotates and drills a hole in the ceiling, so the upper periphery of the dust prevention cap and It leaks between the ceiling and falls on the worker's face and surroundings, which not only prevents the worker from easily performing drilling work, but also seriously contaminates the surrounding area, making the working environment poor.

What has been proposed to somewhat solve the above problems is Public Utility Model Publication No. 20-2016-0001733 (Dust collection device that can be mounted on a hand drill) and Registered Patent No. 10-1485417 (Circular hole drilling machine). is known.

Public Utility Model Publication No. 20-2016-0001733 (dust collection device that can be mounted on a hand drill) provides a hand drill that drills a hole using a drill chuck, and has a dust collection function on the outside of the cover that forms the hand drill. Since the propeller is installed in front of the collection net, even if the propeller contaminated with dust inhales the dust, it cannot blow air efficiently, and the propeller on which the dust accumulates loses its ability to operate, and pollutants such as dust are removed. There is a problem in that the collection function gradually deteriorates because it is captured in a collection network, and the collection network loses its collection function as the collection function gradually declines.

Registered Patent No. 10-1485417 (Circular Hole Drilling Machine) is designed to fill the inside of the cup holder with dust generated when drilling a circular hole using the cup saw blade. This is done by rotating the hole saw body with an electric drill to create a circular hole. Contaminants such as dust generated when drilling holes accumulate inside the dust prevention cap, and contaminants accumulated inside the dust prevention cap are discharged to the outside through the upper periphery of the cup holder, polluting workers and the surrounding work area. There is a problem with contamination.

In order to solve the above problems, I proposed Registered Patent No. 10-1963032 (Hole saw device with dust removal function).

A nose bolt and a nose flywheel are integrally formed at the tip of the drive shaft mounted on the electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and a plurality of nose flywheels are provided so that the lower end is detained in front of the flywheel nut. Two binding rods are inserted and maintained at regular intervals, and the hole saw body is attached/detached to the outside of the nose bolt by screwing/separating it, and a coil spring and a dust scattering prevention cap are sequentially installed on the drive shaft integrally formed at the bottom of the nose bolt. It is coupled and has a dust removal device consisting of a fan and a filter that sucks and filters dust generated when the hole saw body is rotated;

An air intake hole is drilled on one side of the dust prevention cap, a filter storage room is formed on the inner circumferential surface of the dust prevention cap from the inside of the air intake hole so that the filter can be inserted and removed, and an air intake hole is installed on the outside of the air intake hole. A dust removal device is installed on the outer peripheral surface of the dust prevention cap to operate the fan by the power generated when rotating the hole saw body. By operating the fan, the polluted air forcibly sucked into the dust prevention cap is removed. After being filtered by a filter, the cleanly purified air is discharged to the outside through a fan.

This is because the rotational force of the drive shaft is used to rotate the fan by the starting pulley, interlocking pulley, and belt, so the configuration is complicated and installation is not easy. It is composed of several parts and operates, so if any one of them is damaged, the entire function stops. The fan's capacity (volume and suction power) is small, so there are limits to smoothly sucking and filtering dust, and the air filtered by the filter is immediately discharged, making it difficult to efficiently manage (utilize) the converted air. did.

In particular, conventional hole saw devices are not equipped with (installed) a device inside the hole saw body to discharge the perforated plate generated when drilling a hole in the ceiling, so the perforated plate that is pierced by the hole saw main body after completing the hole saw is not installed. It remains stored inside the hole saw body.

Therefore, in order to discharge the perforated plate stored inside the hole saw body after completing the perforation, there is the inconvenience of having to forcibly pull out (eject) the perforated plate stored inside the hole saw main body using a separate tool. Accordingly, there is a problem of unnecessarily wasting time unrelated to the work and consuming a lot of work time when drilling multiple holes. In particular, when forcibly withdrawing (ejecting) the perforated plate stored inside the hole saw main body, There was a problem of safety accidents such as hand injuries caused by the saw blade formed on the upper periphery of the machine.

Moreover, when the hole saw body moves forward while cutting the cutting material (perforated cone plate), the cutting material (perforated cone plate) flows into the inside of the hole saw body, which is formed in a cylindrical shape, and the diameter of the hole saw body and the cutting material (perforated cone plate) is small. In some cases, the cutting material (perforated plate) is pushed out of the hole saw body using the force (elasticity) of the compression spring, but in this case, the compression force of the compression spring is constant, so the cutting material (perforated plate) is discharged out of the hole saw body depending on the friction of the cutting object, its material and thickness, etc. The force to push the perforated cone plate and discharge it out of the hole saw body was different, so the cutting material (perforated cone plate) could not be discharged smoothly (efficiently).

In particular, if the cutting material is as rigid as steel, it has wear resistance to withstand heat and damage caused by friction with the spring surface that occurs as the hole saw body rotates, but if it is made of soft material, the spring may be damaged due to damage to the spring friction surface. It is difficult to dig into this soft surface and remove the cutting material.

A compression spring (coil spring) may be installed on the drive shaft (aka arbor), which is the rotating axis connected to the hole saw body, but there is no function to adjust (increase or decrease) the compression force (elastic force) of the compression spring (coil spring). It is difficult to remove the perforated material (perforated plate) because the compression force (elastic force) required depending on the size, thickness, and material of the hole is not adjustable, and it is difficult to attach or detach the drive shaft (aka arbor) equipped with a compression spring (coil spring). Moreover, if the diameter of the compression spring (coil spring) is small, it is not possible to keep the cutting material horizontal, so not only does it not reduce friction, but the cutting material gets caught inside the hole saw body (hole cutter). The cutting material could not be easily discharged.

It is sometimes used by fixing a spring to a hole saw body (hole cutter) with a small diameter, but this also cannot control the height and compression force (elasticity) of the spring, and depends on the size of the hole saw body (hole cutter) and the material of the cutting material. Since the force that pushes (ejects) the cutting material varies depending on the thickness, etc., when the spring is fixed, the cutting material stuck inside the hole saw body (hole cutter) cannot be pushed out and easily ejected.

Moreover, if the plate is made of gypsum board or soft plywood, if the spring force (elastic force) is too strong, the cutting material may be separated from the plate and damaged before the hole saw body (hole cutter) moves forward, and the cutting surface will be uneven and uneven. I couldn't do it.

The present invention is intended to provide a perforated plate discharge device for a hole saw device that can solve the above problems.

The present invention perforates the perforated plate that occurs when drilling (drilling) a hole in a ceiling, etc., inside the hole saw body, which is mounted on an electric drill and used to drill (drill) a hole of a predetermined size in a flat plate such as a ceiling. The goal is to provide a perforated plate discharge device for a hole saw device that can automatically discharge the material to the outside of the hole saw body while completing the process.

In the present invention, a nose bolt and a nose flywheel are integrally formed at the front end of a drive shaft mounted on an electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and the lower end of the nose flywheel is the front of the flywheel nut. A plurality of binding rods are inserted at regular intervals to be held in, and the hole saw body is attached to the outside of the nose bolt and can be attached and detached by screwing/separating;

Inside the hole saw body, a perforated plate discharge device is installed to automatically discharge the perforated plate generated when drilling a hole in the ceiling, etc., to the outside of the hole saw main body. The purpose is to provide a disk ejection device.

Another object of the present invention is to allow the perforated plate generated when drilling a hole in the ceiling, etc. inside the hole saw body to be automatically discharged to the outside of the hole saw body at the same time as the perforation is completed by the perforated plate discharge device. by doing,

As in the past, after completing the perforation, the inconvenience of having to forcibly pull out (eject) the perforated plate stored inside the hole saw body using a separate tool is eliminated. By eliminating unnecessary waste of time and shortening the drilling work, the drilling work can be performed quickly and smoothly. In particular, when the perforated plate stored inside the hole saw main body is forcibly withdrawn (ejected) as in the past, the hole saw main body The purpose is to provide a perforated plate discharge device for a hole saw device that can be safely performed while preventing safety accidents such as hand injuries caused by the saw blade formed on the upper periphery of the device.

The above and other purposes of the present invention are,

A nose bolt and a nose flywheel are integrally formed at the tip of the drive shaft mounted on the electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and a plurality of nose flywheels are provided so that the lower end is detained in front of the flywheel nut. In the case where the binding rods are maintained at regular intervals and the hole saw body is attached to the outside of the nose bolt and can be attached or detached by screwing;

A perforated plate discharge device for the hole saw device is installed inside the hole saw body to automatically discharge the perforated plate generated when drilling a hole to the outside of the hole saw main body. This is achieved by device 30.

The present invention perforates the perforated plate that occurs when drilling (drilling) a hole in a ceiling, etc., inside the hole saw body, which is mounted on an electric drill and used to drill (drill) a hole of a predetermined size in a flat plate such as a ceiling. The goal is to provide a perforated plate discharge device for a hole saw device that can automatically discharge the material to the outside of the hole saw body while completing the process.

In the present invention, a nose bolt and a nose flywheel are integrally formed at the front end of a drive shaft mounted on an electric drill, a flywheel nut is screwed to the nose bolt on the lower side of the nose flywheel, and the lower end of the nose flywheel is the front of the flywheel nut. A plurality of binding rods are inserted at regular intervals to be held in, and the hole saw body is attached to the outside of the nose bolt and can be attached and detached by screwing/separating;

The hole saw body is characterized by installing a perforated plate discharge device capable of automatically discharging the perforated plate generated when drilling a hole in the ceiling, etc., to the outside of the hole saw main body.

The present invention allows the perforated plate generated when drilling a hole in the ceiling, etc. inside the hole saw body to be automatically discharged to the outside of the hole saw body at the same time as the perforation is completed by the perforated plate discharge device,

As in the past, after completing the perforation, the inconvenience of having to forcibly pull out (eject) the perforated plate stored inside the hole saw body using a separate tool is eliminated. By eliminating unnecessary waste of time and shortening the drilling work, the drilling work can be performed quickly and smoothly. In particular, when the perforated plate stored inside the hole saw main body is forcibly withdrawn (ejected) as in the past, the hole saw main body It can be carried out safely while preventing safety accidents such as hand injuries due to the saw blade formed on the upper periphery of the machine.

Figures 1a and 1b are perspective views showing the assembled state of different embodiments of the perforated plate discharge device for a hole saw device according to the present invention.
Figure 2 is a perspective view showing an exploded state of the perforated plate discharge device for a hole saw device according to the present invention.
Figure 3 is an exploded perspective view showing a state in which the perforated plate discharge device for a hole saw device according to the present invention is installed on the hole saw main body.
Figure 4 is an assembled perspective view showing the state in which the perforated plate discharge device for a hole saw device according to the present invention is installed on the hole saw body.
5A to 5B show a state in which the perforated plate discharge device for a hole saw device according to the present invention is mounted on a hole saw device, and the operation of the perforated plate discharge device for a hole saw device according to the present invention is shown when a hole is drilled in the ceiling by the hole saw device. An example showing the process.
Figure 6 is an exploded perspective view showing the state of installing the perforated plate discharge device for a hole saw device according to the present invention to another hole saw body.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the attached drawings.

The attached drawings, FIGS. 1A to 6, show a specific example of implementation of the perforated plate discharge device 30 for a hole saw device according to the present invention.

1A and 1B are perspective views showing assembled states of different embodiments of the perforated cone plate discharge device 30 for a hole saw device according to the present invention, and Figure 2 is a view showing the assembled state of the perforated cone plate discharge device 30 for a hole saw device according to the present invention. It is a perspective view showing the assembled state and the disassembled state, and Figures 3 and 4 are an exploded perspective view and an assembled perspective view showing the state of installing the perforated plate discharge device 30 for the hole saw device according to the present invention to the hole saw main body, and Figures 5a to 5 5b is a state in which the perforated plate discharge device 30 for a hole saw device according to the present invention is mounted on the dust filtering type hole saw device 1, and the present invention is used when drilling a hole in the ceiling by the dust filtering type hole saw device 1. It is an exemplary diagram showing the operation process of the perforated cone plate discharge device 30 for a hole saw device according to the present invention, and Figure 6 shows the state of installing the perforated cone plate discharge device 30 for a hole saw device according to the present invention to a hole saw body of another embodiment. This is an exploded perspective view.

First, the configuration of the perforated plate discharge device 30 for a hole saw device according to the present invention will be described.

As specifically shown in FIGS. 1A to 2, the perforated plate discharge device 30 for a hole saw device according to the present invention supports (installs) the bullet discharge portion 30-2 by placing it inside the hole saw main body 25. The placement support portion 30-1 and the perforated plate 110 installed on the upper side of the placement support portion 30-1 and perforated by the hole saw body 25 are discharged to the outside (upper side) of the hole saw body 25. Shiki was formed by largely dividing it into a bullet discharge part (30-2).

In the above, the supporting portion 30-1 placed (installed) inside the hole saw body 25 in the bullet discharge portion 30-2 was formed as follows.

Inside the support ring housing 31, which has an open upper part and is formed in a cylindrical shape and has a setter drill distribution hole 32 drilled in the bottom plate, a plurality of mounting nut rods 33 are formed on the edge thereof to be open upwardly with a female thread portion 33-1. ) are maintained at equal intervals to form a single piece, and inside the support ring housing 31, a support ring permanent magnet 34 with a center ring distribution hole 34-1 is formed on the inside of the mounting nut rod 33. The height adjustment plate fastening assembly (35) was formed on the upper part of the support ring housing (31) by fastening it with a mounting bolt (39).

In particular, the height adjustment plate fastening assembly 35 is integrally formed with a tension adjustment plate fastening rod 37 having a center drill distribution hole 37-1 formed in the center of the mounting plate 36 and a threaded portion 38 formed on the outer peripheral surface. In addition, a mounting hole (36-1) was drilled at the edge of the mounting plate (36) on the same vertical line as each mounting nut rod (33) formed on the support ring housing (31), and each mounting hole (36-1) Through this, the mounting bolt 39 can be fastened by screwing the female thread portion 33-1 of each mounting nut rod 33 formed on the support ring housing 31.

In addition, the bullet discharge part 30-2 is installed on the upper side of the placement support part 30-1 and discharges the perforated plate 110 perforated by the hole saw main body 25 to the outside (upper side) of the hole saw main body 25. ) is a height adjustment plate 40 that is screwed to the threaded portion 38 of the tension adjustment plate fastening rod 37 formed in the center of the height adjustment plate fastening assembly 35 and is raised and lowered, and is placed on the upper side of the height adjustment plate 40 It was formed as a bullet assembly 50 that discharges the perforated plate 110 to the outside (upper part).

The height adjustment plate (40) is formed by drilling a fastening rod coupling hole (41) in the center of the height adjustment disk (40) so that it flows up and down, and forming a threaded portion (42) on the inner peripheral surface of the fastening rod coupling hole (41). It is screwed to the threaded portion 38 of the fastening assembly 35, and a plurality of adjustment pieces 43 are formed on the outer circumference of the height adjustment disc 40 at equal intervals, and the height adjustment plate fastening assembly is formed using the adjustment pieces 43. The height adjustment disk 40 screwed to the screw portion 38 of 35) was rotated forward and backward to adjust the height.

As illustrated in FIG. 1A, the elastic assembly 50 placed on the upper side of the height adjustment plate 40 has center drill distribution holes 53-1 and 52-1 at the top and bottom of the coil spring 51. The upper finishing disk 52 and the lower finishing disk 52 drilled in the center were formed as one piece.

In addition, as illustrated in FIGS. 1B and 2, the elastic assembly 50 forms a threaded portion 52-2 on the inner peripheral surface of the center drill distribution hole 52-1 in the lower finishing disk 52 to increase the height. With the adjustment plate 40 excluded, the bullet assembly 50 can be directly screwed onto the threaded portion 38 of the height adjustment plate fastening assembly 35.

In particular, the support ring storage housing 31, the height adjustment plate fastening assembly 35, the height adjustment disc 40, and the elastic foot assembly 50 are made of metal to facilitate the magnetic force of the support ring 34 formed of a permanent magnet. It was conveyed in such a way that it was conveyed.

Hereinafter, the installation state (assembled state) of the perforated plate discharge device 30 for a hole saw device according to the present invention formed (configured) as described above will be described.

As illustrated in Figures 3 to 5, the perforated plate discharge device (30) for a hole saw device according to the present invention installs a center drill (26) on the drive shaft (20) on which the elastic coil spring (23) is mounted on the outside. , Install the hole saw main body (25) by combining the center drill insertion hole (25-1) of the hole saw main body (25) with the center drill (26), and then install the hole saw main body (25) through the center drill insertion hole (25-1) of the hole saw main body (25). By inserting the center drill distribution hole (32) (34-1) (37-1) (52-1) (53-1) into the protruding center drill (26), the perforated plate discharge device (30) for the hole saw device according to the present invention ) can be used by mounting (placed) inside the hole saw body (25).

In addition, as illustrated in FIG. 6, the perforated plate discharge device 30 for a hole saw device according to the present invention has an elastic coil spring (not specifically shown) inserted into the outside and connected to an electric drill (not specifically shown). A nose bolt (24-2) is coupled to the distal end of the drive shaft (20) to be mounted, a flywheel nut (24-3) is screwed to the nose bolt (24-2), and the upper side of the flywheel nut (24-3) is coupled to the nose bolt (24-2). The nose flywheel (24-1) is coupled to the nose flywheel (24-3), and a plurality of binding rods (not shown) are inserted at regular intervals so that the lower end is detained in the front of the flywheel nut (24-3). The center drill (26) was installed on the top of the nose bolt (24-2).

In the hole saw body (not specifically shown) that is attached and detached (screwed/separated) to the outside of the nose bolt (24-2), the center drill distribution hole (32) (34-1) (37-) is attached to the center drill (26). 1) By inserting (52-1) (53-1), the perforated plate discharge device (30) for a hole saw device according to the present invention can be mounted (placed) inside the hole saw main body (25) and used.

When the perforated plate discharge device 30 for a hole saw device according to the present invention is installed on the hole saw body 25 of the electric drill 10 as described above, it is installed in the support ring storage housing 31 as illustrated in FIG. 1A. The support ring storage housing (31) made of metal is fixed to the hole saw body (25) by the magnetic force of the support ring (34), which is built-in and made of permanent magnets.

In addition, as illustrated in FIG. 1B, the threaded portion 52-2 formed on the inner periphery of the center drill distribution hole 52-1 in the lower finishing disk 52 is connected to the bullet assembly 50 with the height adjustment plate 40 excluded. ) can be directly screwed to the threaded portion 38 of the height adjustment plate fastening assembly 35 that forms.

Therefore, the perforated plate discharge device 30 for a hole saw device according to the present invention is placed inside the hole saw body 25 and remains fixed without being separated.

The operating relationship (state of use) of the hole saw plate discharge device 30 according to the present invention, which is fixedly installed on the hole saw body 25 of the electric drill 10 as described above, is explained with reference to the attached drawings FIGS. 5A to 5C. do.

The dust filtering type hole saw device 1 illustrated in FIGS. 5A to 5C includes a dust scattering prevention cap 27 on the upper end of the drive shaft 20 and a bearing 28 installed on the upper support bearing housing 33-1. It is coupled so that it can rotate freely, and the elastic force of the coil spring 23 is adjusted by screwing the tightening nut 22 to the bolt portion 21 of the drive shaft 20 mounted on the electric drill 10. .

As described above, the operating relationship of the perforated plate discharge device 30 for a hole saw device according to the present invention will be described together with the operating relationship (state of use) of the installed dust filtering type hole saw device 1.

As illustrated in FIG. 5A, the dust filtering type hole saw device 1 uses a switch (not specifically shown) of the electric drill 10 while aligning the center drill 26 to a predetermined position on the ceiling 100. When turned ON, the hole saw body (25) rotates together with the drive shaft (20).

When the dust filtering type hole saw device (1) is pushed upward while the hole saw body (25) is rotating, the upper surface of the fine dust prevention cap (27) remains closely connected to the ceiling (100). In this way, a cutting circumference 101 is formed in the ceiling 100 by the rotating hole saw body 25 while the upper surface of the fine dust prevention cap 27 is closely connected to the ceiling 100, and a hole ( 102) is drilled.

As described above, when the hole saw body 25 rotates and drills the hole 102 in the ceiling 100, the elastic assembly 50 of the perforated plate discharge device 30 for the hole saw device according to the present invention is connected to the coil spring 51. The upper finishing disk 53 is maintained in close contact with the ceiling 100 due to the elastic force of .

When drilling a hole 102 in the ceiling 100 by operating the electric drill 10 while the upper finishing disk 53 of the bullet assembly 50 is in close contact with the ceiling 100, as shown in Figure 5b. As illustrated, the perforated plate 110 cut by the cutting circumference 101 flows into the continuously rising hole saw body 25.

After completely drilling the hole 102 in the ceiling 100, as illustrated in FIG. 5C, when the dust filtering type hole saw device 1 is completely lowered together with the electric drill 10, the hole saw body 25 is lowered to the ceiling 100. ) and at the same time, the dust scattering prevention cap 27 is also separated, and a hole 102 is formed in the ceiling 100.

As described above, when the hole saw body 25 is separated from the lower side of the ceiling 100, the compressed ball assembly 50 of the perforated plate discharge device 30 for the hole saw device according to the present invention installed inside the hole saw body 25 is compressed. As the coil spring 51 is deployed, the perforated disk 110 together with the upper finishing disk 53 is pushed upward (eliminated) and discharged to the upper side (outside) of the hole saw main body 25.

A hole 102 is drilled in the ceiling 100 by repeatedly using the dust filtering type hole saw device 1 installed with the perforated plate discharge device 30 for the hole saw device according to the present invention, and a hole 102 is formed in the ceiling 100. Each time 102) is drilled, the hole saw plate 110 generated each time the hole 102 is drilled is pushed upward (eliminated) by the hole saw plate discharge device 30 for the hole saw device according to the present invention ( It is discharged to the upper (outside) side of 25), and thus it is possible to easily drill a hole 102 in the ceiling 100.

In the perforated disk discharge device 30 for a hole saw device according to the present invention, which is constructed and operated as described above, the upper finishing disk 53 is installed on the top of the bullet assembly 50, so that the coil spring 51 digs into the cutting material. The problem of lifting can be solved, the resistance against the friction surface can be reduced, and the cutting material can be maintained horizontally without being tilted, thereby preventing the phenomenon of the perforated plate 110 (cutting material) being caught inside the hole saw body 25. By fundamentally preventing this, the perforated plate 110 (cutting material) can be easily discharged.

In addition, the height adjustment disk 40 is screwed to the tension adjustment plate fastening rod 37 of the height adjustment plate fastening assembly 25, and the height of the height adjustment disk 40 is adjusted to adjust the elastic force of the elasticity assembly 50, that is, the coil. The elastic force of the spring (51) can be adjusted and detained, and the screw portion (52-2) formed on the inner periphery of the center drill distribution hole (52-1) in the lower finishing disk (52) excludes the height adjustment plate (40). In this state, the elastic assembly (50) is directly screwed to the threaded portion (38) of the height adjustment plate fastening assembly (35), and the elastic force of the coil spring (51) is adjusted by adjusting the height according to the degree of coupling of the elastic assembly (50). can be detained.

Therefore, when rotating the hole saw body 25, it is possible to fundamentally prevent the phenomenon of the connecting disk rotating and the spring being separated due to vibration and frictional resistance of the spring as in the past, and the cutting circumference 101, which is the cutting surface, can be prevented. It can be kept neat and undamaged.

The other disc discharge device for a hole saw device (30) according to the present invention has a support ring (34) made of a permanent magnet installed inside the support ring storage housing (31), so the other disc discharge device for a hole saw device according to the present invention. (30) can be easily attached and detached from the inside of the hole saw main body (25).

Although only specific embodiments of the present invention have been described and shown above, it is obvious to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and such changes and modifications fall within the scope of the appended patent claims. It's natural.

1: Dust filtering type hole saw device 10: Electric drill
20: Drive shaft 21: Bolt part
22: Tightening nut 23: Coil spring
25: Hole saw body 26: Center drill
27: Dust scattering prevention cap 28: Bearing
30: Perforated plate discharge device for hole saw device 30-1: Placement support portion
30-2: Bullet discharge unit 31: Support ring storage housing
32. 34-1. 37-1. 52-1. 53-1: Center Drink Distributor
33: Mounting nut rod 34: Support ring
35: Height adjustment plate fastening assembly 36: Mounting plate
37: Tension adjustment plate fastening rod 38: Threaded portion
39: Mounting bolt 40: Height adjustment disk
42. 52-2: Threaded portion 43: Control piece
50: Bullet assembly 51: Coil spring
52: Lower finishing disc 53: Upper finishing disc

Claims (10)

A nose bolt (24-2) and a nose flywheel (24-1) are integrally formed at the tip of the drive shaft (20) mounted on the electric drill (10), and a nose bolt (24-2) is attached to the lower side of the nose flywheel (24-1). A flywheel nut (24-3) is screwed to (24-2), and a plurality of binding rods are maintained at regular intervals so that the lower end of the nose flywheel (24-1) is detained in front of the flywheel nut (24-3). In the case where the hole saw body 25 is attached to the outside of the nose bolt 24-2 and can be attached or detached by screwing/separating;
Inside the hole saw body 25, a perforated plate discharge device is installed to automatically discharge the perforated plate 110 generated when drilling a hole to the outside of the hole saw main body 25: Characterized by a perforated plate discharge device for a hole saw device.
The method according to claim 1, wherein the perforated plate discharge device installed inside the hole saw body (25);
Detachable from the inside of the hole saw body (25): A perforated plate discharge device for a hole saw device, characterized by:
The method according to claim 1 or 2, wherein the perforated plate discharge device installed inside the hole saw main body (25);
A support portion (30-1) installed by placing the bullet discharge portion (30-2) inside the hole saw body (25),
The perforated plate 110 installed on the upper side of the supporting part 30-1 and perforated by the hole saw main body 25 is formed as an elastic discharge part 30-2 that discharges the perforated plate 110 to the upper part of the hole saw main body 25. : Perforated plate discharge device for hole saw device characterized by .
The method according to claim 2, wherein the support portion (30-1) placed inside the hole saw body (25) is;
It is formed in a cylindrical shape with an open top, a setter drill distribution hole 32 is drilled in the bottom plate, and a plurality of mounting nut rods 33 with female threads 33-1 formed to open upward are placed on the inner edge at equal intervals. A support ring housing (31) maintained and integrally formed;
A support ring (34) accommodated inside the mounting nut rod (33) inside the support ring housing (31) and having a center ring distribution hole (34-1) formed thereon;
A perforated plate discharge device for a hole saw device, characterized in that it includes a height adjustment plate fastening assembly (35) fastened to the upper part of the support ring housing (31) with a mounting bolt (39).
The method of claim 2, wherein the bullet discharge unit (30-2) which discharges the perforated plate 110 perforated by the hole saw body 25 to the upper part of the hole saw body 25;
A height adjustment plate 40 that is screwed to the threaded portion 38 of the tension adjustment plate fastening rod 37 formed at the center of the height adjustment plate fastening assembly 35 and is raised and lowered;
A perforated cone plate discharge device for a hole saw device, characterized in that: formed by an elastic assembly (50) placed on the upper side of the height adjustment plate (40) and discharging the perforated cone plate (110) to the upper part of the hole saw main body (25).
The method of claim 4, wherein the height adjustment plate fastening assembly (35) is;
A center drill distribution hole (37-1) is formed in the center of the mounting plate (36), and a tension adjustment plate fastening rod (37) with a threaded portion (38) formed on the outer peripheral surface is integrally formed;
A mounting hole (36-1) is drilled at the edge of the mounting plate (36) on the same vertical line as each mounting nut rod (33) formed on the support ring housing (31);
The female thread portion (33-1) of each mounting nut rod (33) formed on the support ring housing (31) is screwed and fastened to the mounting bolt (39) through each mounting hole (36-1). A perforated plate discharge device for a hole saw device.
The method of claim 5, wherein the height adjustment plate (40) is;
In the center of the height adjustment disk 40, a fastening rod coupling hole 41 is drilled to circulate up and down, and the inner peripheral surface of the fastening rod coupling hole 41 is screwed to the threaded portion 38 of the height adjustment plate fastening assembly 35. Forming a threaded portion (38);
A plurality of adjustment pieces 43 are formed on the outer circumference of the height adjustment disc 40 at equal intervals, and the height adjustment disc 40 screwed to the threaded portion 38 of the height adjustment plate fastening assembly 35 is rotated forward and backward. A perforated plate discharge device for a hole saw device that allows the height to be adjusted by:
The method according to claim 5, wherein the elastic assembly (50) placed on the upper side of the height adjustment plate disk (40);
At the upper and lower ends of the coil spring 51, the upper finishing disk 53 and the lower finishing disk 52 are formed with center drill distribution holes 53-1 and 52-1 drilled in the center, respectively. A perforated plate discharge device for a hole saw device.
The method of claim 6, wherein the support ring (34) accommodated inside the mounting nut rod (33) inside the support ring housing (31);
Formed with a permanent magnet: A perforated plate discharge device for a hole saw device characterized by:
The method of claim 8, wherein the center drill coupling hole (52-1) of the lower finishing disk (52) is;
A perforated plate discharge device for a hole saw device characterized by further forming a threaded portion (52-2) on the inner peripheral surface.

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