KR950000542Y1 - Cooling fan adhering device of electric drill - Google Patents
Cooling fan adhering device of electric drill Download PDFInfo
- Publication number
- KR950000542Y1 KR950000542Y1 KR92008897U KR920008897U KR950000542Y1 KR 950000542 Y1 KR950000542 Y1 KR 950000542Y1 KR 92008897 U KR92008897 U KR 92008897U KR 920008897 U KR920008897 U KR 920008897U KR 950000542 Y1 KR950000542 Y1 KR 950000542Y1
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- KR
- South Korea
- Prior art keywords
- cooling fan
- motor shaft
- electric drill
- fixed
- adhering device
- Prior art date
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Classifications
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- 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
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- 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
- B23B45/003—Attachments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
내용 없음.No content.
Description
제1도는 일반적인 휴대용 전기드릴을 일부 절결하여 나타낸 단면도.1 is a cross-sectional view showing a part of a typical portable electric drill.
제2도는 종래이 모터축과 냉각팬을 분리하여 나타낸 정면도.Figure 2 is a front view showing a conventional separation of the motor shaft and the cooling fan.
제3도는 본 고안 장치의 요부를 나타낸 종단면도.Figure 3 is a longitudinal sectional view showing the main part of the device.
제4도는 본 고안 장치에 적용되는 냉각팬과 절연부시를 분해하여 나타낸 종단면도.Figure 4 is a longitudinal cross-sectional view showing the decomposition of the cooling fan and the insulating bush applied to the device of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
4 : 모터축 5 : 부하측 베어링4: motor shaft 5: load-side bearing
5a : 내부하우징 13 : 절연부시5a: Internal housing 13: Insulation bush
13a : 돌출부 14 : 냉각팬13a: protrusion 14: cooling fan
14a, 14b : 플랜지부 14c : 절결홈14a, 14b: flange portion 14c: notch groove
본 고안은 휴대용 전기드릴이 냉각팬 장착장치에 관한것으로서, 그 구조를 개량하여 냉각팬을 모터축에 보다 편리하게 장착시킬 수 있도록 한다.The present invention is a portable electric drill relates to a cooling fan mounting apparatus, the structure is improved so that the cooling fan can be more conveniently mounted on the motor shaft.
일반적으로 휴대용 전기드릴은 제1도와 같은 형태로서, 본체(1)내에 계자(2)가 고정되어 있고 그 내부에는 회전자(3)가 고정된 모터축(4)이 부하측 베어링(5)및 반부하측 베어링(6)과 결합되어 본체(1)에 지지되어 있으며 모터축(4)에 형성된 기어(4a)는 감속기어(7)와 맞물려 스핀들(8)을 회전시키도록 되어 있다.In general, the portable electric drill is in the form of FIG. 1, in which the motor shaft 4 having the field magnet 2 fixed in the main body 1 and the rotor 3 fixed therein includes a load-side bearing 5 and a half. The gear 4a coupled to the load side bearing 6 and supported by the main body 1 and formed on the motor shaft 4 is engaged with the reduction gear 7 to rotate the spindle 8.
따라서 상용전원(110V 또는 220V)을 이용하여 모터를 구동시키면 계자(2)와 회전자(3)에 의해 회전력이 발생되므로 그 회전력이 기어(4a)를 통해 감속기어(7)에서 감속되어 스핀들(8)을 회전시키므로서 스핀들(8)과 고정된 절삭공구(도시는 생략함)가 피가공물을 가공하게 된다.Therefore, when the motor is driven using the commercial power supply 110V or 220V, rotational force is generated by the field 2 and the rotor 3, and thus the rotational force is decelerated in the reduction gear 7 through the gear 4a, and the spindle ( By rotating 8) the spindle 8 and a fixed cutting tool (not shown) process the workpiece.
상기한 바와같은 휴대용 전기드릴은 피가공물을 가공시에 절삭공구에 부하가 걸려 모터에 흐르는 전류가 증가되고, 이에 따라 철손 및 동손이 증가하여 모터에 열이 발생되므로 이를 냉각시켜 주기위한 냉각수단의 설치가 요구되며, 이는 통상 모터축(4)에 냉각팬(9)을 고정하여 모터축(4)의 회전시에 냉각팬(9)이 함께 회전하면 본체(1)에 형성된 흡입공(10)을 통해 외부를 공기를 흡입하여 계자(2)와 회전자(3) 사이 및 본체(1)와 계자(2)사이를 순환시켜 토출구(11)를 통해 토출하므로서 가능하게 된다.As described above, the portable electric drill has a load on the cutting tool when processing the workpiece, and the current flowing through the motor increases, thereby increasing the iron loss and copper loss, thereby generating heat in the motor. Installation is required, which is usually fixed to the cooling fan (9) on the motor shaft (4) when the cooling fan (9) rotates together in the rotation of the motor shaft (4) suction holes (10) formed in the body (1) The air is sucked through the outside to circulate between the field 2 and the rotor 3 and between the main body 1 and the field 2 to be discharged through the discharge port 11.
종래에는 이와같은 냉각팬(9)을 모터축(4)에 고정하기 위해 제2도에 도시한 바와같이 부하측 베어링(5)이 고정되는 일측으로 모터축(4)에 너어링(Knurling)부(4b)를 형성하여 냉각팬(9)을 별도의 프레스로 압입 고정하도록 되어있다.In the related art, in order to fix such a cooling fan 9 to the motor shaft 4, as shown in FIG. 2, a knurling portion on the motor shaft 4 is provided on one side to which the load bearing 5 is fixed. 4b) is formed to press-fit the cooling fan 9 by a separate press.
그러나 이러한 종래의 장치는 냉각팬(9)을 모터축(4)에 고정하기 위해 별도의 너어링공정이 추가됨과 동시에 이를 프레스로 압입고정하도록 되어 있었으므로 공정의 추가로 인해 생산성이 저하되었음은 물론 냉각팬(9)의 내경과 너어링부의 정밀도가 불량할 경우에는 모터축(4)의 회전시에 냉각팬(9)이 모터축(4)에서 유동하게 되어 심한 소음을 유발시키게 되는 문제점이 있었다.However, such a conventional apparatus was designed to press-fix and fix the cooling fan 9 to the motor shaft 4 at the same time as a separate kneading process was added, as well as the productivity was lowered due to the addition of the process If the inner diameter of the cooling fan 9 and the precision of the knurling portion are poor, there is a problem that the cooling fan 9 flows in the motor shaft 4 when the motor shaft 4 rotates, causing severe noise. .
본 고안은 종래의 이와같은 문제점을 해결하기 위한것으로서, 모터축과 냉각팬의 결합구조를 개선하여 프레스를 사용하지 않고도 냉각팬을 손으로 모터축에 간편하게 장착시킬 수 있는 장치를 제공코저 하는데 그 목적이 있다.The present invention is to solve such a problem in the prior art, by improving the coupling structure of the motor shaft and the cooling fan to provide a device that can be easily mounted on the motor shaft by hand without using a press. There is this.
상기 목적을 달성하기 위한 본 고안의 형태에 따르면, 모터축과 회전자 코일 사이를 절연시키는 절연부시의 일측에 돌출부를 형성하고 냉각팬에는 양측으로 플랜지부를 형성함과 함께 일측의 플랜지부에 절결홈을 형성하여 상기 돌출부가 절결홈에 끼워져 냉각팬이 모터축에 고정되도록 하여서된 휴대용 전기 드릴의 냉각팬 장착장치가 제공된다.According to an aspect of the present invention for achieving the above object, a protrusion is formed on one side of the insulated bush that insulates the motor shaft and the rotor coil, and the flange is formed on both sides of the cooling fan. A cooling fan mounting apparatus for a portable electric drill is provided in which a groove is formed so that the protrusion is inserted into the notch groove so that the cooling fan is fixed to the motor shaft.
이하, 본 고안을 일실시예로 도시한 첨부된 도면 제3도 매지 제4도를 참고로 하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to FIG.
첨부도면 제3도는 본 고안 장치의 요부를 나타낸 종단면도이고 제4도는 본 고안 장치에 적용되는 냉각팬과 절연부시를 분해하여 나타낸 종단면도로서, 모터축(4)에 다수매 적층된 회전자(3)가 압입 고정되어있고 그 일측으로는 회전자(3)에 회전자 코일(12)을 감을때 모터축(4)과 절연시키기 위한 절연부시(13)가 고정되어 있는데. 이때 절연부시(13)의 일측으로는 돌출부(13a)가 형성되어 있다.FIG. 3 is a longitudinal sectional view showing the main part of the device of the present invention, and FIG. 4 is a longitudinal sectional view showing an exploded view of the cooling fan and the insulating bush applied to the device of the present invention. 3) is press-fitted and the insulating bush 13 for insulating the motor shaft 4 when the rotor coil 12 is wound on the rotor 3 is fixed to one side. At this time, a protruding portion 13a is formed at one side of the insulating bush 13.
그리고 모터축(4)의 회전시에 모터를 냉각시켜 주기위한 냉각팬(14)의 양측에 플랜지부(14a)(14b)가 형성되어 있고 그중 일측의 플랜지부(14a)에는 절결홈(14c)이 형성되어 상기 절결홈(14c)이 절연부시(13)에 형성된 돌출부(13a)와 결합되도록 되어 있다.Flange portions 14a and 14b are formed on both sides of the cooling fan 14 for cooling the motor when the motor shaft 4 rotates, and a notch groove 14c is formed in one of the flange portions 14a. The cutout groove 14c is formed to be coupled to the protrusion 13a formed on the insulating bush 13.
이때 돌출부(13a)와 절결홈(14c)을 상호 대응되게 2곳에 형성할 수 있지만 결합력을 향상시키기 위해 90°각도를 유지하면서 4곳에 형성할 수도 있다.At this time, the protrusions 13a and the notch grooves 14c may be formed at two locations to correspond to each other, but may be formed at four locations while maintaining a 90 ° angle to improve the bonding force.
한편 모터측(4)에 냉각팬(14)을 결합시킨 상태에서 모터축(4)의 일단을 본체(1)에 고정된 부하측베어링(5)에 결합하고 다른 일단을 반부하측 베어링(6)에 결합할 경우 냉각팬(14)의 플랜지부(14b)가 부하측베어링(5)의 내부하우징(5a)과 접속되도록 되어 있다.Meanwhile, with the cooling fan 14 coupled to the motor side 4, one end of the motor shaft 4 is coupled to the load side bearing 5 fixed to the main body 1, and the other end is connected to the half load side bearing 6. When combined, the flange portion 14b of the cooling fan 14 is connected to the internal housing 5a of the load side bearing 5.
이와같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.
먼저 모터축(4)에 절연부시(13)와 회전자코일(3)을 장착시킨 상태에서 냉각팬(14)을 모터축(4)에 손으로 결합하여 냉각팬(14)의 플랜지부(14a)에 형성된 절결홈(14c)을 절연부시(13)의 돌출부(13a)에 결합하고 본체(1)에 고정된 부하측 베어링(5)과 반부하측베어링(6)에 모터축(4)을 결합하면 냉각팬(14)의 다른 일측에 형성된 플랜지부(14b)가 부하측베어링(5)의 내부하우징(5a)과 접속되므로 본 고안의 설치가 완료된다.First, the cooling fan 14 is coupled to the motor shaft 4 by hand in a state where the insulating bush 13 and the rotor coil 3 are mounted on the motor shaft 4, and thus the flange portion 14a of the cooling fan 14 is mounted. When the notch groove 14c formed in the above is coupled to the protrusion 13a of the insulating bush 13 and the motor shaft 4 is coupled to the load side bearing 5 and the half load side bearing 6 fixed to the main body 1, Since the flange portion 14b formed on the other side of the cooling fan 14 is connected to the internal housing 5a of the load side bearing 5, the installation of the present invention is completed.
이러한 상태에서 피가공물을 가공하기 위해 전원을 인가하면 계자(2)와 회전자(3)사이의 기전력에 의해 모터축(4)이 회전하게 되고, 이에 따라 발생된 동력이 모터축(4)의 끝단에 형성된 기어(4a)와 감속기어(7)에 의해 감속되어 스핀들(8)을 회전시키므로서 피가공물을 가공하게 된다.In this state, when power is applied to process the workpiece, the motor shaft 4 is rotated by the electromotive force between the field 2 and the rotor 3, and the generated power is generated by the motor shaft 4. The workpiece is processed by decelerating by the gear 4a and the reduction gear 7 formed at the end to rotate the spindle 8.
이와같이 피가공물을 가공함에 따라 모터축(4)에 부하가 걸리므로 인해 모터에 흐르는 전류가 증가되어 열이 발생될때 모터축(4)에 고정된 냉각팬(14)이 회전하면서 발생된 열을 냉각시켜주게 된다.As the workpiece is processed, the load is applied to the motor shaft 4 so that the current flowing through the motor is increased, and when the heat is generated, the cooling fan 14 fixed to the motor shaft 4 rotates to cool the generated heat. I will let you.
이상에서와 같이 본 고안은 냉각팬(14)의 양측에 플랜지부(14a)(14b)을 형성하여 일측에 절결홈(14c)을 형성하고 절연부시(13)에는 돌출부(13a)을 형성하여 수작업으로 이들을 모터축에 서로 결합시켜주기만 하면 냉각팬(14)의 장착이 완료되도록 되어있으므로 공정의 단순화로 생산성을 향상시킬 수 있게 되는 효과를 가지게 된다.As described above, the present invention forms flange portions 14a and 14b on both sides of the cooling fan 14 to form cutout grooves 14c on one side, and protruding portions 13a are formed on the insulating bush 13 by hand. By associating them with each other to the motor shaft, the cooling fan 14 is completed to be mounted, so that the productivity can be improved by simplifying the process.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92008897U KR950000542Y1 (en) | 1992-05-22 | 1992-05-22 | Cooling fan adhering device of electric drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92008897U KR950000542Y1 (en) | 1992-05-22 | 1992-05-22 | Cooling fan adhering device of electric drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930025221U KR930025221U (en) | 1993-12-20 |
| KR950000542Y1 true KR950000542Y1 (en) | 1995-02-04 |
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ID=19333586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92008897U KR950000542Y1 (en) | 1992-05-22 | 1992-05-22 | Cooling fan adhering device of electric drill |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950000542Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101256759B1 (en) * | 2011-08-19 | 2013-04-23 | 홍원배 | A hair drier |
-
1992
- 1992-05-22 KR KR92008897U patent/KR950000542Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101256759B1 (en) * | 2011-08-19 | 2013-04-23 | 홍원배 | A hair drier |
Also Published As
| Publication number | Publication date |
|---|---|
| KR930025221U (en) | 1993-12-20 |
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