KR20160117755A - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- KR20160117755A KR20160117755A KR1020150044969A KR20150044969A KR20160117755A KR 20160117755 A KR20160117755 A KR 20160117755A KR 1020150044969 A KR1020150044969 A KR 1020150044969A KR 20150044969 A KR20150044969 A KR 20150044969A KR 20160117755 A KR20160117755 A KR 20160117755A
- Authority
- KR
- South Korea
- Prior art keywords
- ventilation
- speed
- opening
- motor
- power tool
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/001—Housing of the drill, e.g. handgrip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
Abstract
The present invention relates to a power tool comprising a power tool housing including a motor mounted therein and a vent hole communicating with the outside to introduce outside air, a high speed position where the motor rotates at high speed, and a low speed position And a maximum opening position which is formed integrally with the speed adjusting unit and the speed adjusting unit and opens the ventilation opening at the maximum speed when the ventilation opening is in the high speed position and a maximum opening position which maximally opens the ventilation opening at the high speed position, And a ventilation regulator for moving between the open positions and regulating the degree of opening of the ventilation openings.
Description
BACKGROUND OF THE
Generally, a power tool drives a built-in motor using electric power as a power source through a wire or a battery to rotate the tool selectively coupled according to the operation purpose of a driver and a drill to perform multi-task such as tightening a screw or drilling a hole It is one of the tools that can be used.
The power tool includes a housing in which the motor and the like are assembled. The housing has a vent hole through which external air flows to cool the driving heat generated by the motor when the power tool is driven.
Since a plurality of the ventilation holes are formed to have a constant size, external air having a constant flow rate is introduced into the housing irrespective of the rotational speed of the motor or the working environment.
For example, in a water or dusty environment, the amount of air entering the vents should be reduced to protect parts inside the power tool. For this, there is a problem that the operator must block the ventilation hole by a hand or another means.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a power tool capable of adjusting a ventilation hole of a housing according to a rotational speed of a motor.
The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.
To achieve the above object, according to one aspect of the present invention, there is provided an electric power tool comprising: a housing of a power tool including a motor mounted therein, a vent hole communicating with the outside to receive external air, A speed adjusting unit that is movable between a high speed position at which the motor rotates at a low speed and a speed adjusting unit that is integrally formed with the speed adjusting unit, And a ventilation regulator which moves between a minimum opening position for opening the ventilation opening at the low speed position and a minimum opening position for regulating the opening degree of the ventilation opening.
In this case, the ventilation control unit includes a plurality of mesh-shaped inflow holes facing the ventilation holes and formed at regular intervals.
And the number of the inflow holes of the ventilation control unit increases from the maximum opening position toward the minimum opening position.
Further, the plurality of inflow holes of the ventilation control unit are reduced in size from the maximum opening position toward the minimum opening position.
According to the above-mentioned problem solving means, the present invention is characterized in that a ventilation regulating portion for regulating the opening size of the ventilation opening formed in the housing of the power tool is provided in the speed regulating portion for regulating the motor speed of the electric power tool, The effect can be controlled.
That is, when the speed of the motor is high, the ventilation hole is opened to the maximum so that the outside air can be sufficiently introduced into the housing. When the speed of the motor is low, the ventilation hole is opened to the minimum, The amount of air flowing into the housing can be adjusted according to the rotational speed of the motor.
Further, since the ventilation control unit is integrally formed with the speed control unit, the speed of the motor can be controlled and the opening size of the ventilation opening can be adjusted.
In addition, since the position of the speed adjusting portion is semi-automatically adjusted, the operator using the power tool can adjust the positions of the speed adjusting portion and the ventilation adjusting portion with a small force.
1 is a perspective view illustrating a power tool according to an embodiment of the present invention,
Figure 2 is an exploded view of the housing of Figure 1,
3 is an operation diagram of the speed adjusting unit and the ventilation adjusting unit of FIG. 2,
Fig. 4 is a modification of the ventilation control unit of Fig. 2,
5 is another modification of the ventilation regulator of FIG.
It should be understood that the specific details of the invention are set forth in the following description to provide a more thorough understanding of the present invention and that the present invention may be readily practiced without these specific details, It will be clear to those who have knowledge.
Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS. 1 to 5, and a description will be given centering on parts necessary for understanding the operation and operation according to the present invention.
1 is an exploded view of the housing of FIG. 1, FIG. 3 is an operation view of the speed adjusting unit and the ventilation adjusting unit of FIG. 2, and FIG. 4 is a view 2 is a modification of the ventilation control unit of Fig. 2, and Fig. 5 is another modification of the ventilation control unit of Fig.
As shown in these drawings, the
INDUSTRIAL APPLICABILITY The
A plurality of
The
The
The first and
In the embodiment of the present invention, a plurality of
The
That is, when the
Conversely, when the
At this time, the
Particularly, the
In addition, although the
Referring again to FIG. 2, the
The
4, the number of the
Similarly, when the
Further, as shown in Fig. 5, the plurality of
That is, when the
As described above, in the
That is, when the speed of the
In addition, since the
In addition, since the position of the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.
10: power tool 100: housing
120: motor 140: ventilation hole
200: Speed regulator 300: Ventilation regulator
340: Inflow ball
Claims (4)
A speed regulator capable of moving between a high speed position where the motor rotates at a high speed and a low speed position where the motor rotates at a low speed; And
And a speed adjusting unit that moves between a maximum opening position which is opposed to the speed adjusting unit and which maximally opens the ventilation opening at the high speed position and a minimum opening position which closes the ventilation opening at the low speed position, A ventilation regulator for regulating the opening degree of the ventilation opening;
And an electric motor.
The air-
And a plurality of mesh-shaped inflow holes facing the vent holes and formed at regular intervals.
Wherein the plurality of inflow holes of the ventilation control unit
And the number increases as the distance from the maximum open position to the minimum open position increases.
Wherein the plurality of inflow holes of the ventilation control unit
And the size decreases from the maximum open position to the minimum open position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150044969A KR20160117755A (en) | 2015-03-31 | 2015-03-31 | Electric tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150044969A KR20160117755A (en) | 2015-03-31 | 2015-03-31 | Electric tool |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160117755A true KR20160117755A (en) | 2016-10-11 |
Family
ID=57162199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150044969A KR20160117755A (en) | 2015-03-31 | 2015-03-31 | Electric tool |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20160117755A (en) |
-
2015
- 2015-03-31 KR KR1020150044969A patent/KR20160117755A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |