KR20230163641A - Geared dsut collecting device for power tools - Google Patents

Abstract

The geared dust collection device for power tools according to the present invention includes an upper handler of a hammer drill on which a drill bit is provided, and a lower handler coupled to the upper handler in the opposite direction of rotation of the drill bit; A speed increase transmission unit that transmits the driving force of the drill bit at increased speed through a plurality of gears; A collection unit that collects and filters flying products with an impeller that is connected to the speed increasing transmission unit and rotates; And it may include a collecting bellows connected to the lower part of the collecting unit to prevent the flying products from scattering.
The geared fly dust collector for power tools according to the present invention easily collects fly dust during drilling work with a collection bellows, forcibly drives the impeller through gearing, improves collection performance and dust collection yield by rotating the impeller at an increased speed, and filters the collection unit. It is filtered through a sieve in real time and is easy to maintain, which not only improves the dust collection yield but also significantly increases the drilling yield.

Description

Geared dust collection device for power tools {GEARED DSUT COLLECTING DEVICE FOR POWER TOOLS}

The present invention relates to a geared dust collection device for power tools, and more specifically, to a geared dust collection device for power tools that can improve dust collection performance by driving an impeller by increasing the rotational force of a hammer drill.

Most general structures are made of concrete, and drilling work to create anchor bolt holes is required on the inside and outside of the structure as required or necessary. These anchor bolt holes must be processed with different drilling depths and drilling diameters according to various specification conditions.

Usually, anchor bolt holes can be mainly performed by hammer drills (or core drills, anchor drills, etc.). However, when drilling an anchor bolt hole using a hammer drill, fine concrete flying particles are inevitably generated during the drilling process, which not only causes difficulties and inconveniences in drilling work, but also poses a threat to the safety of workers.

Accordingly, a conventional collector that collects flying products generated during drilling work has been disclosed in patent application (No. 2005-0036950). This technology discloses the structure of a flypipe container that collects flyparticles generated after combining a separate flyparticle container with the drill of a hammer drill.

However, the existing gravity-based collection method does not effectively collect flying products, and the dust collection performance and dust collection efficiency of flying products are significantly reduced, and the closed collection structure that collects flying products in a flyaway container requires frequent cleaning or replacement to collect dust. There is a problem in that not only is the yield impaired, but the drilling work yield is significantly reduced.

The present invention was proposed to solve the above problems, and it easily collects flying products during drilling work with a collection bellows, and improves collection performance and dust collection yield by forcefully driving the impeller through gearing and rotating it at increased speed, and improving the collection yield of the collection unit. We provide a geared dust collection device for power tools that is filtered in real time through a filter sieve and is easy to maintain, improving the dust collection yield and significantly increasing the drilling work yield.

A geared dust collection device for power tools according to the present invention to achieve the above object includes: an upper handler of a hammer drill provided with a drill bit, and a lower handler coupled to the upper handler in the opposite direction of rotation of the drill bit; A speed increase transmission unit that transmits the driving force of the drill bit at increased speed through a plurality of gears; A collection unit that collects and filters flying products with an impeller that is connected to the speed increasing transmission unit and rotates; And it may include a collecting bellows connected to the lower part of the collecting unit to prevent the flying products from scattering.

The speed increase transmission part is partially exposed upward and can be pressed and coupled to the drill bit when the lower handler is coupled to the upper handler.

The speed increase transmission unit includes a gearing housing; a first gear provided inside the gearing housing and coupled to the drill bit; a second gear body, a third gear body, and a fourth gear body provided inside the gearing housing and sequentially engaged with the first gear; and a fifth gear provided inside the gearing housing, meshed with the fourth gear body, and connected to the impeller.

The first gear may be provided with a chucking socket that protrudes from the top of the gearing housing and through which the drill bit is disposed.

The fifth gear may be provided with an expansion connector that extends downward and is connected to the impeller.

The collection unit includes a collection housing in which the impeller is accommodated; A filter block connected in communication with the collection housing; And it may further include a filter body accommodated and disposed inside the filter block.

The collecting bellows may be provided with vacuum prevention holes along the edge to prevent internal vacuum.

The collection bellows may be made of silicone material.

The geared fly dust collector for power tools according to the present invention easily collects fly dust during drilling work with a collection bellows, forcibly drives the impeller through gearing, improves collection performance and dust collection yield by rotating the impeller at an increased speed, and filters the collection unit. It is filtered through a sieve in real time and is easy to maintain, which not only improves the dust collection yield but also significantly increases the drilling yield.

Figure 1 is a perspective view of a geared dust collection device for power tools according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of Figure 1.
Figure 3 is a cross-sectional view showing the coupled state of the drill bit, the lower handler, and the speed increase transmission unit in the geared dust collection device for power tools according to an embodiment of the present invention.
Figure 4 is a perspective view showing the connection relationship of a plurality of gears in the geared dust collection device for power tools according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing the connection relationship between the expansion connector connected to the fifth gear and the impeller in the geared dust collector for power tools according to an embodiment of the present invention.
Figure 6 is a diagram schematically showing the power transmission configuration of the speed increase transmission unit in the geared dust collection device for power tools according to an embodiment of the present invention.

Hereinafter, an embodiment of a geared dust collection device for power tools according to the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of a geared fly dust collector for an electric tool according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, and Figure 3 is a geared fly dust collector for an electric tool according to an embodiment of the present invention. is a cross-sectional view showing the coupled state of the drill bit, the lower handler, and the speed increase transmission part, and Figure 4 is a perspective view showing a plurality of gear connection relationships in the geared dust collection device for power tools according to an embodiment of the present invention, and Figure 5 is a cross-sectional view showing the connection relationship between the expansion connector connected to the fifth gear and the impeller in the geared dust collection device for power tools according to an embodiment of the present invention.

As shown in FIGS. 1 to 5, the geared dust collection device for power tools according to an embodiment of the present invention includes an upper handler 12 of a hammer drill 10 provided with a drill bit 11, and the drill a lower handler (13) coupled to the upper handler (12) in the opposite direction of rotation of the blade (11); A speed increase transmission unit 200 that transmits the driving force of the drill bit 11 at increased speed through a plurality of gears; A collection unit 300 that collects and filters flying products with an impeller 320 that is connected and rotated to the speed increase transmission unit 200; And it may include a collecting bellows 400 connected to the lower part of the collecting unit 300 to prevent the scattering of the flying products.

The upper handler 12 may be coupled to the hammer drill 10, and a pressing protrusion 12a may be provided inside the upper handler 12 as mainly shown in FIG. 3.

And the lower handler 13 may be screwed to the lower part of the upper handler 12. At this time, the coupling direction of the lower handler 13 can be coupled to the upper handler 12 in a direction opposite to the rotational direction of the drill bit 11, thereby preventing arbitrary loosening of the lower handler 13.

On the other hand, the existing gravity-based collection method had the problem of poor dust collection performance and dust collection efficiency of flying products.

Accordingly, in this embodiment, a speed increase transmission unit 200 may be provided that improves dust collection efficiency by increasing the speed through gearing using the rotational force of the drill bit 11.

The speed increase transmission unit 200 is partially exposed upward and can be pressed and coupled to the drill bit 11 when the lower handler 13 is coupled to the upper handler 12.

That is, as shown in FIG. 3, when the lower handler 13 is coupled to the upper handler 12, the lower handler 13 moves upward and comes into close contact with the upper handler 12. At this time, the pressing protrusion of the upper handler 12 ( 12a) can be firmly fixed to the drill bit 11 by biting the outer tapered surface 213 of the chucking socket 212 and pressing it radially inward.

The speed increase transmission unit 200 includes a gearing housing 210; A first gear 211 provided inside the gearing housing 210 and coupled to the drill bit 11; A second gear body 220, a third gear body 230, and a fourth gear body 240 provided inside the gearing housing 210 and sequentially engaged with the first gear 211; And it may include a fifth gear 250 provided inside the gearing housing 210, meshed with the fourth gear body 240, and connected to the impeller 320.

The gearing housing 210 itself may not rotate due to a bearing between the gearings such as the chucking socket 212 and the first gear 211.

A through hole is provided in the center of the gearing housing 210 as shown in FIG. 2, and the chucking socket 212 may be disposed to be partially exposed through the through hole. The gearing housing 210 contains a plurality of gears and serves to protect the gearing by isolating it from the outside.

The first gear 211 may be the initial gear configuration through which all of the rotational force of the gear blades is transmitted.

The first gear 211 may be provided with a chucking socket 212 that protrudes upward from the gearing housing 210 and through which the drill bit 11 is disposed. The tapered surface of the chucking socket 212 is pressed against the pressing protrusion 12a of the upper handler 12, so that the chucking socket 212 can be fixed to the drill bit 11. That is, when the lower handler 13 is coupled to the upper handler 12, the lower handler 13 moves upward and comes into close contact with the upper handler 12, and at this time, the pressing protrusion 12a of the upper handler 12 is connected to the chucking socket ( By biting the outer tapered surface 213 of 212) and pressing it radially inward, it can be firmly fixed to the drill bit 11. As a result, the first gear 211 transmits the rotational force of the drill bit 1:1 as is. You can do it.

This chucking socket 212 may be coupled to the first gear 211, or may be manufactured integrally.

A second gear body 220 meshed with the first gear 211, a third gear body 230 meshed with the second gear body 220, and a fourth gear body meshed with the third gear body 230 ( 240), two gears may be arranged on one axis, as mainly shown in FIGS. 4 and 6. And finally, the fifth gear 250 may be meshed and connected to the fourth gear body 240.

Here, as shown in FIG. 3, the fifth gear 250 is not connected to the drill bit 11, and thus the rotation of the drill bit 11 is directly transmitted to the fifth gear 250. Maybe not.

Through these plural gearings, the speed increase transmission unit 200 can increase the rotational speed of the drill bit 11, and in this embodiment, the rotational speed of the drill bit is increased at a ratio of approximately 1:4 to increase the impeller. (320) can be rotated. Accordingly, the collection efficiency of the impeller 320 can be improved.

Meanwhile, the fifth gear 250 may be provided with an expansion connector 251 that extends downward and is connected to the impeller 320. The expansion connector 251 may be supported by the collection unit 300 by a bearing 270.

This expansion connector 251 may be provided with a plurality of recessed grooves 252 along the outer circumference, and the recessed groove 252 can be coupled to the inner circumference of the impeller 320 without slip.

In addition, a through hole through which the drill bit 11 passes is provided at the center of the expansion connector 251, and at this time, no contact or support occurs between the drill bit and the expansion connector 251.

Accordingly, it is possible to drive the impeller 320 at an increased speed than the rotation speed of the drill bit 11 through the speed increase transmission unit 200, so that collection efficiency can be improved. there is.

Referring mainly to FIGS. 1, 2, and 5, the collection unit 300 includes a collection housing 310 in which the impeller 320 is accommodated; A filter block 340 connected in communication with the collection housing 310; And it may further include a filter body 341 accommodated and disposed inside the filter block 340.

The collection housing 310 has an impeller 320 therein and may be a space where flying products temporarily reside.

Flying matter introduced through the collection bellows 400 is drawn into the center of the lower cover by the high-speed rotation of the impeller 320, rotates inside the collection housing 310, and can be discharged to the filter block 340 through the pipe. .

A filter body 341 as shown in FIG. 1 may be placed inside the filter block 340, and the purified air that has passed through the filter body 341 may be discharged to the outside through the cap 342.

Here, the cap 342 can be provided to be detachable from the filter block 340, so maintenance can be advantageous when replacing the filter body 341. Meanwhile, a separate pipe, etc. is connected to the cap 342, so that discharged flying products can be collected without additional scattering.

The collecting bellows 400 may be provided with vacuum prevention holes 410 along the edge to prevent internal vacuum. The collecting bellows 400 in this embodiment may be made of silicone material.

Through this configuration, flying products are collected during drilling work with the collection bellows 400, the impeller 320 is forcibly driven through gearing and rotated at increased speed to improve collection performance and dust collection yield, and the filter body of the collection unit 300 ( 341), it is filtered in real time and maintenance is easy, so not only can the dust collection yield be improved, but the drilling work yield can be significantly increased.

Figure 6 is a diagram schematically showing the power transmission configuration of the speed increase transmission unit in the geared dust collection device for power tools according to an embodiment of the present invention.

Hereinafter, the dust collection function of the geared dust collection device for power tools according to this embodiment will be described in detail with reference to FIGS. 1 to 6.

First, the lower handler 13 is coupled to the hammer drill 10. At this time, the tapered surface of the chucking socket 212 is pressed radially inward by the pressing protrusion 12a of the upper handler 12, and thus the drill blade (11) The chucking socket 212 is tightly fixed to the outer surface.

Next, the collection bellows 400 are brought into close contact with the drilling point, and a vacuum prevention hole 410 is provided so that an internal vacuum can be prevented.

Next, when the drill bit 11 rotates, the speed increase transmission unit 200 operates. At this time, as shown in FIG. 6, the first gear 211 connected to the chucking socket 212 rotates, and the second gear body 220, the third gear body 230, the fourth gear body 240, and the fourth gear body 212 rotate. 5 Gear 250 rotates sequentially and increases speed. Accordingly, the impeller 320 coupled to the expansion connector 251 connected to the fifth gear 250 rotates at an increased speed.

Accordingly, flying products are effectively collected, and the collected flying products can be efficiently collected as they are discharged to the outside through the pipe and filter block 340, thereby improving collection performance and dust collection yield.

With this stage configuration, flying products are collected during drilling work with the collection bellows 400, the impeller 320 is forcibly driven through gearing and rotated at increased speed to improve collection performance and dust collection yield, and the filter body of the collection unit 300 Filtering is performed in real time through (341), making maintenance easy, which not only improves the dust collection yield but also significantly increases the drilling yield.

Above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted in accordance with the appended claims. Additionally, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

10: hammer drill 11: drill bit
12: upper handler 13: lower handler
200: gearing housing 211: first gear
212: Chucking socket 220: Second gear body
230: third gear body 240: fourth gear body
250: 5th gear 251: expansion connector
300: collection unit 310: collection housing
320: Impeller 330: Lower cover
340: filter block 341: filter body
400: Collecting bellows 410: Vacuum prevention hole

Claims (7)

An upper handler of a hammer drill provided with a drill bit, and a lower handler coupled to the upper handler in the opposite direction of rotation of the drill bit;
A speed increase transmission unit that transmits the driving force of the drill bit at increased speed through a plurality of gears;
A collection unit that collects and filters flying products with an impeller that is connected to the speed increasing transmission unit and rotates; and
A geared fly waste dust collection device for power tools, characterized in that it includes a collection bellows connected to the lower part of the collection unit to prevent the fly wastes from scattering. According to paragraph 1,
The geared dust collection device for a power tool, characterized in that the speed increase transmission part is partially exposed upward and is pressurized to the drill bit when the lower handler is coupled to the upper handler. According to paragraph 1,
The speed increase transmission unit,
gearing housing;
a first gear provided inside the gearing housing and coupled to the drill bit;
a second gear body, a third gear body, and a fourth gear body provided inside the gearing housing and sequentially engaged with the first gear; and
A geared dust collector for a power tool, comprising a fifth gear provided inside the gearing housing, engaged with the fourth gear body, and connected to the impeller. According to paragraph 3,
A geared dust collection device for a power tool, characterized in that the first gear is provided with a chucking socket that protrudes from the top of the gearing housing and through which the drill bit is disposed. According to paragraph 3,
A geared dust collector for a power tool, characterized in that the fifth gear is provided with an expansion connector that extends downward and is connected to the impeller. According to paragraph 1,
The collection unit is,
A collection housing in which the impeller is accommodated;
A filter block connected in communication with the collection housing; and
A geared dust collection device for power tools, characterized in that it further includes a filter body accommodated and disposed inside the filter block. According to paragraph 1,
A geared dust collection device for power tools, characterized in that the collection bellows is provided with vacuum prevention holes along the edge to prevent internal vacuum.

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