KR20200114574A - A apparatus for suction and blowing of chargeable electric motor tool - Google Patents

Abstract

The present invention relates to an apparatus for suction and blowing of a rechargeable power tool, which can be attached to and detached from a power tool as needed so that the power tool can perform the original function and also clean and organize surroundings through the suction and blowing apparatus. To achieve the objective, a rechargeable power tool comprises a suction and blowing apparatus (20) coupled to the front end of the power tool (1) to perform blowing and suction operations while being rotated in forward and reverse directions in accordance with forward and reverse operations of the power tool (1). The suction and blowing apparatus (20) comprises: a housing (21) having a bracket (22) installed on one side thereof and coupled to the front end of the power tool (1), and a guide (24) installed on the other side of the bracket (22) to guide blowing and suction; a driving shaft (31) installed in the housing (21) and fixed on a chuck (2) of the front end of the power tool (1) and a driving gear (32) axially installed on the driving shaft (31); a driven gear (34) engaged with the driving gear (32) and a driven shaft (33) on which the driven gear (34) is installed; and a fan (26) axially installed on the front end of the driven shaft (33).

Description

Blowing and suction device of rechargeable power tool {A APPARATUS FOR SUCTION AND BLOWING OF CHARGEABLE ELECTRIC MOTOR TOOL}

The present invention relates to a blower and suction device of a rechargeable power tool, and more particularly, by allowing attachment and detachment of the blower and suction device for blowing and suction as needed, the original role of the power tool as well as the blowing and suction device are provided. It relates to a ventilation and suction device of a rechargeable power tool that enables cleaning and cleaning of the surrounding area.

A power tool is a tool that easily and quickly processes metal or wood using a built-in electric motor and its rotational force. An electric drill for drilling holes, an electric screwdriver for tightening or loosening screws, and an electric grinder used for finishing or polishing. B. It is used for various purposes in homes and factories, such as electric grinders, chainsaws for cutting wood, and electric planers for trimming wood. Usually, you can plug the cord into an AC power source and connect it directly, and portable power tools using rechargeable batteries are widely used.

However, while such a conventional power tool has the advantage of being able to be used for various purposes, there is no ventilation or suction function for cleaning and organizing after work, so there is a difficulty in cleaning and tidying work after work. That is, after work using a power tool, many difficulties occurred in removing foreign substances such as work debris accumulated or stuck in the gap between the work object and the surrounding area.

To this end, until now, in addition to the power tool for work, a separate air blower capable of removing foreign substances such as work debris accumulated or stuck in the gap between the work object and the surrounding through strong blowing wind has been provided, or the surrounding area through suction. A separate vacuum cleaner was provided to clean and clean up.

However, the cost of purchasing each separate equipment was added, as well as the hassle of preparing and using separate equipment.

Therefore, there is a need for a power tool capable of cleaning and organizing work through blowing and suction, as well as performing tool work through a single device.

Republic of Korea Utility Model Publication No. 20-0476197 (2015. 02. 02. registration)

Accordingly, the present invention was invented to solve the above problems, and its main purpose is to enable the power tool to be attached and detached from the air blower and suction device as necessary, so that the original role of the power tool as well as cleaning and cleaning through the air blower and suction device It is to provide a ventilation and suction device for a rechargeable power tool that allows the surrounding area to be organized.

In order to achieve the above object, the present invention,

In power tools,

It consists of a blowing and suction device that is coupled to the tip of the power tool and rotates in a forward/reverse direction according to the forward/reverse operation of the power tool and performs blowing and suction operation.

At this time, the ventilation and suction device includes a housing on which a bracket coupled to a tip of the power tool is installed on one side, and a guide for guiding blowing and suction is installed on the other side of the bracket; A drive shaft installed inside the housing and fixed to a chuck at the tip of the power tool, and a drive gear installed on the drive shaft; A connection gear engaged with the driving gear and a connection shaft on which the connection gear is installed; A driven gear engaged with the connecting gear and a driven shaft on which the driven gear is installed; It consists of; a fan installed at the end of the driven shaft.

At this time, if the coupling portion is formed in a concave portion at both sides of the front end of the power tool where the brackets of the blower and suction device abut, it is possible to easily and easily couple the brackets of the blower and suction device.

In addition, ventilation holes for smooth rotation of the fan are formed outside the housing of the blowing and suction device.

On the other hand, in the present invention, due to the simple configuration and the advantage of direct spraying of wind, the driven shaft on which the fan is built is formed horizontally with the drive shaft, that is, the drive shaft and the fan are installed at right angles to each other. It is not limited and can be configured in various forms for product design and smooth operation.

Applying the present invention as described above has the following effects.

By allowing the power tool to be attached and detached from the air blower and suction device as necessary, it has the advantage of not only the original role of the power tool, but also cleaning and cleaning the surroundings through the air blower and suction device.

1 is an exploded perspective view showing a power tool according to the present invention.
Figure 2 is a cross-sectional view showing a state in which the suction and blowing device is coupled to the power tool according to the present invention.
Figure 3 is an exploded perspective view showing an embodiment of the power tool according to the present invention.
Figure 4 is a longitudinal sectional view of Figure 3;
5 is a cross-sectional view showing an embodiment of a guide in the suction and blowing device of the power tool according to the present invention,
5a) A cross-sectional view showing a guide used for ventilation only.
5b) A cross-sectional view showing a guide used for ventilation and suction
5c) A cross-sectional view showing another embodiment of a guide used for ventilation and suction.

When described in detail according to the accompanying drawings a preferred embodiment of the present invention as follows.

As shown in Figs. 1 and 2, the blower and suction device of the rechargeable power tool according to the present invention rotates in the forward/reverse direction according to the forward/reverse operation of the power tool 1 to perform blowing and suction operation. After the suction device 20 is provided, the blowing and suction device 20 is coupled to the front end of a conventional power tool 1.

At this time, the ventilation and suction device 20 has a bracket 22 coupled to the front end of the power tool 1 on one side, and a guide 24 for guiding the blowing and suction on the other side of the bracket 22. A housing 21; A drive shaft 31 installed in the housing 21 and fixed to the chuck 2 at the tip of the power tool 1, and a drive gear 32 installed on the drive shaft 31; A connection gear 36 engaged with the driving gear 32 and a connection shaft 35 on which the connection gear 36 is installed; A driven gear (34) meshed with the drive gear (32) and a driven shaft (33) on which the driven gear (34) is installed; It consists of; a fan 26 installed at the tip of the driven shaft 33.

In the part where the bracket 22 of the blowing and suction device 20 abuts on both sides of the power tool (1), the coupling part 23 is concave and formed so that the bracket 22 of the blowing and suction device 20 can be combined. Allows for easy bonding.

In addition, a ventilation hole 25 is formed outside the housing 21 of the blowing and inhaling device 20 to suck air and for smooth rotation of the fan 26.

Meanwhile, in the present invention, the connection shaft 35 and the connection gear 36 are engaged between the driving gear 32 installed on the drive shaft 31 and the driven shaft 33 on which the driven gear 34 is installed. , To simplify the configuration and minimize the volume, the drive gear 32 installed on the drive shaft 31 and the connection shaft 35 engaged between the driven shaft 33 on which the driven gear 34 is built, and the connection It may be configured such that the drive gear 32 and the driven gear 34 are directly engaged without the configuration of the gear 36.

In the present invention, due to the simple configuration and the advantage of direct spraying of wind, the driven shaft 33 on which the fan 26 is built is installed horizontally with the drive shaft 31, that is, the drive shaft 31 and the fan ( 26) are formed to be installed at right angles to each other, but the present invention is not limited thereto, and may be configured in various forms for product design and smooth operation. That is, the bevel gear 37 is installed on the drive shaft 31, the first connecting gear 38 is engaged with the bevel gear 37, and the first connecting gear 38 is engaged with the driven gear 34'. And it can be formed in various ways, such as a form in which the fan 26 is installed on the driven shaft 33 on which the driven gear 34' is installed.

In addition, the shape of the guide 24 formed in the housing 21 of the blowing and suction device 20 may be changed according to the blowing and suction operation in the blowing and suction device 20. That is, the guide 24a in the form of FIG. 5A is formed with a narrow tip so that strong wind is sprayed into a narrow place, so that it is only for blowing air, and the guide 24b in the form of FIG. 5B is for collecting foreign substances such as dust sucked during suction. The receiver 43 is formed integrally fixed to one side, is opened and closed through a door 44 formed at the bottom to discharge the collected foreign matter, and formed in a form in which a filter 41 is installed at the end to blow and It is for suction, and the guide 24c in the form of FIG. 5C has a dust tray 43 for collecting foreign substances such as dust sucked during suction, and is detachably formed on one side, and a filter 41 is inserted at the top of the end. It is formed in a form in which the filter hole 42 is installed and is for blowing and suction.

The ventilation and suction device of the rechargeable power tool according to the present invention having such a configuration is used when cleaning and arranging a work site during or after work is completed.

To this end, it is used after combining the blower and suction device 20 at the tip of the power tool 1.

At this time, the coupling and fixing of the power tool 1 and the blowing and suction device 20 is performed by fixing the bracket 22 formed at the tip of the blowing and suction device 20 to the side of the power tool 1 through a separate fixing means. , The power tool (1) at both ends of the blower and suction device 20, the bracket 22 in contact with the concave portion formed in the coupling portion 23, and the concave formed coupling portion 23, the blowing and suction device 20 ) Can be easily combined by fitting the bracket 22.

In this state, in the case of first cleaning the work site by blowing air, when the power tool 1 is rotated in the forward direction, the drive gear 32 installed on the drive shaft 31 is rotated in the forward direction according to the forward rotation.

When the driving gear 32 is rotated in the forward direction according to the above operation, the driven gear 34 engaged with the driving gear 32 is rotated in the forward direction, and the fan 26 at the end is rotated in the forward direction according to the forward rotation of the driven gear 34. As the installed driven shaft 33 rotates in the forward direction, wind is generated, and foreign substances in the workplace can be cleaned and arranged through the generated wind. At this time, when the gear ratio of the power tool 1 is adjusted, the blowing effect can be improved.

In addition, in the case of cleaning through blowing and suction, the operation is the same as the above operation when blowing, and when the power tool 1 is rotated in the reverse direction during suction, the drive gear installed on the drive shaft 31 according to the reverse rotation ( 32) is rotated in the reverse direction.

When the power tool 1 rotates in the reverse direction according to the above operation, the driven gear 34 engaged with the driving gear 32 is rotated in the reverse direction, and the fan 26 at the end according to the reverse rotation of the driven gear 34 A suction force is generated as the driven shaft 33 on which) is installed is rotated in the reverse direction, and foreign substances can be sucked and removed using the suction force generated at this time.

At this time, by adjusting the gear ratio of the power tool 1, it is possible to improve the ventilation and suction effects.

When performing the blowing and suction operation as described above, the blowing and suction is performed through the blowing and suction guide 24 formed on the other side of the bracket 22 in the housing 21 coupled to the blowing and suction device 20.

Such delivery and suction guide 24 is made in various forms as shown in FIGS. 5A to 5C.

The guide 24a in the shape of FIG. 5A is formed with a narrow tip so that strong wind is injected into a narrow place, and is only for blowing,

In the guide 24b in the shape of FIG. 5B, a dust tray 43 for collecting foreign substances such as dust sucked during suction is integrally fixed to one side, and a door 44 formed at the bottom to discharge the collected foreign substances It is opened and closed through, and is formed in a form in which a filter 41 is installed at the end for blowing and suction,

In the guide 24c in the form of FIG. 5C, a dust tray 43 for collecting foreign substances such as dust sucked during suction is formed detachably on one side, and a filter hole 42 for inserting the filter 41 at the top of the end It is formed in a form in which it is installed and is for blowing and suction.

When using such a delivery and suction guide 24, all of the guides 24a, 24b, and 24c in the form of Figs. 5a to 5c can be used when only blowing is performed, and the work area is cleaned through the blowing operation. And can be organized.

In addition, the guide 24b and 24c in the form of Figs. 5b and 5c should be used to inhale foreign substances using the suction force generated by reverse rotation during the blowing and suction operation, and collect and discharge the sucked foreign substances. When using the guide 24b in the form of FIG. 5B, foreign substances such as dust sucked are collected in the dust tray 43 formed integrally with one side, and the collected foreign substances are discharged through the door 44 formed at the bottom. And purifying through a filter 41 installed at the end.

In addition, when using the guide 24c in the form of FIG. 5C, foreign substances such as dust sucked are collected in the dust tray 43 formed integrally and detachably on one side, and the collected foreign substances are discharged after detaching the dust tray 43. The inhaled air is purified through a filter 41 that is detached from the filter hole 42. Therefore, it is possible to clean the exterior and minimize the volume, so it is easy to store and clean. At this time, if the gear ratio of the power tool 1 is adjusted, it is possible to improve the ventilation and suction effects.

Meanwhile, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed only by the claims below, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: power tool 2: chuck
20: ventilation and suction device 21: housing
22: bracket 23: coupling portion
24a, 24b, 24c: guide 25: vent hole
26: fan 31: drive shaft
32: drive gear 33: driven shaft
34, 34': driven gear 35: connecting shaft
36: connecting gear 37: bevel gear
38: first connection gear 41: filter
42: filter hole 43: dust tray
44: door

Claims (7)

In power tools,
A rechargeable electric motor comprising: a blower and suction device (20) that is coupled to the front end of the power tool (1) and rotates in a forward/reverse direction according to the forward/reverse operation of the power tool (1) for blowing and suction operation. Tool ventilation and suction system.
The method of claim 1,
In the part where the bracket 22 of the blowing and suction device 20 abuts on both sides of the power tool 1, there is a coupling part 23 for easily and easily coupling the bracket 22 of the blowing and suction device 20 Blowing and suction device of a rechargeable power tool, characterized in that the concave formed.
The method of claim 1,
The ventilation and suction device 20 is a housing in which a bracket 22 coupled to the front end of the power tool 1 is installed on one side, and a guide 24 for guiding the blowing and suction is installed on the other side of the bracket 22 (21) and; A drive shaft 31 installed in the housing 21 and fixed to the chuck 2 at the tip of the power tool 1, and a drive gear 32 installed on the drive shaft 31; A driven gear (34) meshed with the drive gear (32) and a driven shaft (33) on which the driven gear (34) is installed; A fan (26) installed at the leading end of the driven shaft (33);
The method of claim 3,
The connecting gear installed on the connecting shaft 35 between the drive gear 32 built on the drive shaft 31 in the blowing and suction device 20 and the driven gear 34 built on the driven shaft 33 ( 36) ventilation and suction device of the rechargeable power tool, characterized in that further installed.
The method of claim 3,
A bevel gear 37 is installed on the drive shaft 31, a first connection gear 38 is fitted to the bevel gear 37, and the first connection gear 38 is meshed with the driven gear 34'. And the fan 26 is installed on the driven shaft 33 on which the driven gear 34' is installed.
The method of claim 3,
In the guide 24b, a dust tray 43 for collecting foreign substances such as dust sucked during suction is formed integrally with one side, and opened and closed through a door 44 formed at the bottom to discharge the collected foreign substances. Blowing and suction device of a rechargeable power tool, characterized in that so as to.
The method of claim 3,
In the guide 24c, a dust tray 43 for collecting foreign substances such as dust sucked during suction is detachably formed on one side, and a filter hole 42 for inserting the filter 41 is installed at the top of the end. Blowing and suction device of a rechargeable power tool, characterized in that formed in the form.

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