JPH031190Y2 - - Google Patents
Info
- Publication number
- JPH031190Y2 JPH031190Y2 JP2651784U JP2651784U JPH031190Y2 JP H031190 Y2 JPH031190 Y2 JP H031190Y2 JP 2651784 U JP2651784 U JP 2651784U JP 2651784 U JP2651784 U JP 2651784U JP H031190 Y2 JPH031190 Y2 JP H031190Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- voltage
- stator
- handle
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 235000001715 Lentinula edodes Nutrition 0.000 description 1
- 240000000599 Lentinula edodes Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は、操作者が把持する電動工具のハンド
ル部の保温装置に関するものである。[Detailed Description of the Invention] The present invention relates to a heating device for a handle portion of a power tool held by an operator.
携帯用電動工具の電気ドリル（椎茸ドリル）
で、固定子の巻線両端に発生する低電圧を発熱体
の電源として、ハンドル部に前記発熱体を設け保
温を行なつている。電気ドリルの負荷変動によ
り、巻線両端に発生する低電圧が第４図のに示
すように変化し、ハンドル部の保温として一定温
度に保つことができなかつた。 Portable power tool electric drill (shiitake drill)
The low voltage generated across the windings of the stator is used as a power source for the heating element, and the heating element is provided in the handle portion to maintain heat. Due to load fluctuations in the electric drill, the low voltage generated at both ends of the winding varied as shown in Figure 4, making it impossible to maintain the handle at a constant temperature.
本考案の目的は、上記した従来技術の問題点を
解消し、操作者の把持する電動工具のハンドル部
を保温し、負荷変動があつても一定の温度に保温
することができる。 An object of the present invention is to solve the problems of the prior art described above, to keep the handle portion of a power tool held by an operator warm, and to maintain the temperature at a constant temperature even when the load fluctuates.
本考案は、電動機運転中の固定子と回転子の分
担電圧に着目し、固定子巻線両端に発生する低電
圧をハンドル部内に設けた発熱体に供給し、発熱
体への供給電圧をツエナーダイオード（定電圧素
子）、抵抗により定電圧にし、発熱体の熱量を一
定にしたものである。更に発熱体の温度制御装置
（サーモスタツト）により、温度過昇防止を行な
い安全性、作業能率を向上するよう工夫したもの
である。 This invention focuses on the shared voltage between the stator and rotor during motor operation, and supplies the low voltage generated at both ends of the stator windings to the heating element installed inside the handle, and the voltage supplied to the heating element is changed to a zener. A diode (constant voltage element) and a resistor are used to maintain a constant voltage and keep the amount of heat from the heating element constant. Furthermore, a temperature control device (thermostat) for the heating element is used to prevent excessive temperature rise, improving safety and work efficiency.
本考案の一実施例を第１図〜第４図を用いて説
明する。 An embodiment of the present invention will be described with reference to FIGS. 1 to 4.
第１図に示す外枠６の内部に、固定子１と回転
子２が収納されている。外枠６の後方に操作者が
把持するハンドル部３が形成されている。電源ス
イツチ５を入れることにより、電動機が回転し、
固定子巻線の両端に発生する電圧は、第４図の
に示すように電動機供給電圧の約20％程度の低電
圧となる。第３図の回路図に示すように、固定子
巻線の両端に発生する電圧を電源としてハンドル
部３の内周面に沿つて、ステンレス板状等の発熱
体４が配設されている。この発熱体４は、第２図
に示すようにシリコンゴム等の絶縁体１０で被覆
されている。発熱体４の上面には一定温度に制御
するサーモスタツト７が発熱体と直列に配線され
ており、接着剤等で固定されている。ツエナーダ
イオード９は発熱体４とサーモスタツト７に並列
に配線され、抵抗８は直列に配線されている。電
動機の負荷変動に伴い第４図のに示すように固
定子分端電圧は変化する。Ｂ地点までは、ツエナ
ーダイオード９が作動しない定数を設定してあ
る。発熱体４へ適正電圧以上の電圧が印加される
と、ツエナーダイオード９が作動し、定電圧が発
熱体４に供給され発熱体４の温度が一定温度に保
たれる。 A stator 1 and a rotor 2 are housed inside an outer frame 6 shown in FIG. A handle portion 3 is formed at the rear of the outer frame 6 to be held by an operator. By turning on the power switch 5, the electric motor rotates,
The voltage generated across the stator winding is a low voltage of about 20% of the motor supply voltage, as shown in FIG. As shown in the circuit diagram of FIG. 3, a heating element 4 made of a stainless steel plate or the like is disposed along the inner peripheral surface of the handle portion 3 using the voltage generated at both ends of the stator winding as a power source. As shown in FIG. 2, this heating element 4 is covered with an insulator 10 such as silicone rubber. A thermostat 7 for controlling the temperature at a constant temperature is wired in series with the heating element 4 on the upper surface thereof, and is fixed with an adhesive or the like. The Zener diode 9 is wired in parallel to the heating element 4 and the thermostat 7, and the resistor 8 is wired in series. As the motor load fluctuates, the stator terminal voltage changes as shown in FIG. 4. A constant is set so that the Zener diode 9 does not operate up to point B. When a voltage higher than the appropriate voltage is applied to the heating element 4, the Zener diode 9 is activated, a constant voltage is supplied to the heating element 4, and the temperature of the heating element 4 is maintained at a constant temperature.
本考案によれば、電動機運転中に固定子巻線の
両端に発生する電圧をツエナーダイオード、抵抗
により定電圧としたので、負荷変動による発熱体
の温度変化を防止し、ハンドル把持部の温度を一
定に保つことができる。 According to the present invention, the voltage generated at both ends of the stator winding during motor operation is made constant using a Zener diode and a resistor, which prevents changes in the temperature of the heating element due to load fluctuations and reduces the temperature of the handle grip. can be kept constant.
第１図は、本考案の実施例を示す要部縦断側面
図、第２図は、第１図のAA線断面図、第３図
は、回路図、第４図は、固定子分端電圧特性図の
一例を示す。
図において、１……固定子、２……回転子、３
……ハンドル部、４……発熱体、５……電源スイ
ツチ、６……外枠、７……サーモスタツト、８…
…抵抗、９……ツエナーダイオード、１０……絶
縁体。
Fig. 1 is a vertical sectional side view of main parts showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line AA in Fig. 1, Fig. 3 is a circuit diagram, and Fig. 4 is a stator terminal voltage. An example of a characteristic diagram is shown. In the figure, 1... stator, 2... rotor, 3
...Handle portion, 4...Heating element, 5...Power switch, 6...Outer frame, 7...Thermostat, 8...
...Resistor, 9...Zener diode, 10...Insulator.
Claims (1)
回転に支持され、冷却フアンが固着された回転子
とで、構成された電動機と、前記枠体の一部に操
作者が把持するハンドル部を有する携帯用電動工
具において、前記ハンドル部に発熱体を設け、該
発熱体の電源を固定子の巻線両端に発生する低電
圧電源から供給すると共に、前記発熱体の供給電
圧を定電圧装置により定電圧とし、前記ハンドル
部の温度を一定温度に制御したことを特徴とする
ハンドル部保温装置。 An electric motor includes a stator held inside a frame, a rotor rotatably supported by the frame and to which a cooling fan is fixed, and an electric motor held by an operator in a part of the frame. In a portable power tool having a handle part, a heating element is provided in the handle part, power for the heating element is supplied from a low voltage power source generated at both ends of a winding of a stator, and a supply voltage of the heating element is determined. A handle heat-retaining device, characterized in that the temperature of the handle is controlled to a constant temperature by applying a constant voltage using a voltage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2651784U JPS60138671U (en) | 1984-02-24 | 1984-02-24 | Handle heat retention device for portable power tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2651784U JPS60138671U (en) | 1984-02-24 | 1984-02-24 | Handle heat retention device for portable power tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60138671U JPS60138671U (en) | 1985-09-13 |
| JPH031190Y2 true JPH031190Y2 (en) | 1991-01-16 |
Family
ID=30522594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2651784U Granted JPS60138671U (en) | 1984-02-24 | 1984-02-24 | Handle heat retention device for portable power tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60138671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217131A (en) * | 2009-03-19 | 2010-09-30 | Kawamura Electric Inc | Metal detecting device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005169533A (en) * | 2003-12-09 | 2005-06-30 | Matsushita Electric Works Ltd | Rotating tool |
-
1984
- 1984-02-24 JP JP2651784U patent/JPS60138671U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217131A (en) * | 2009-03-19 | 2010-09-30 | Kawamura Electric Inc | Metal detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60138671U (en) | 1985-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3225232A (en) | Variable speed portable tool | |
| ATE92221T1 (en) | ELECTRONICALLY PROGRAMMABLE UNIVERSAL BRUSHLESS DC FAN MOTOR WITH INTEGRATED FOLLOW-UP CONTROL AND LOCKED ROTOR PROTECTION. | |
| JPH031190Y2 (en) | ||
| JPS64306Y2 (en) | ||
| JPS64305Y2 (en) | ||
| JPH07284287A (en) | Motor controller | |
| JPS626657U (en) | ||
| JPH047904Y2 (en) | ||
| JPS6245604Y2 (en) | ||
| JPS6153988U (en) | ||
| JPS622957U (en) | ||
| JPS6213355U (en) | ||
| JPS61165051U (en) | ||
| JPS5824815U (en) | Temperature control circuit for electric heating equipment | |
| JPS64307Y2 (en) | ||
| JPS6342960Y2 (en) | ||
| JPS6244696U (en) | ||
| JPS6127684U (en) | Handle heat retention device for portable power tools | |
| JPS622959U (en) | ||
| JPS6437337U (en) | ||
| JPH0423143U (en) | ||
| JPS6168694U (en) | ||
| JPS60173832U (en) | Heating equipment with humidifier | |
| JPS6241391U (en) | ||
| JPH0360849U (en) |