JP2005096023A - Rotary power tool - Google Patents

Rotary power tool Download PDF

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JP2005096023A
JP2005096023A JP2003332186A JP2003332186A JP2005096023A JP 2005096023 A JP2005096023 A JP 2005096023A JP 2003332186 A JP2003332186 A JP 2003332186A JP 2003332186 A JP2003332186 A JP 2003332186A JP 2005096023 A JP2005096023 A JP 2005096023A
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battery
switch
current
turned
charger
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Itsuki Yasuoka
巖 安岡
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MITSUTOMO SEISAKUSHO KK
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary power tool capable of continuously performing work without needing to temporarily stop its use at every charge by allowing a battery to be charged while performing work. <P>SOLUTION: This rotary power tool is provided with a charger 1 capable of converting an alternating current into a direct current to output, an insertion port 2 for a plug for the charger, a switch 3, a drive unit 4, a motor 5, the battery 7, a light emission diode (LED) 8 and a casing 9. During feeding with the charger 1 connected to the insertion port 2, if the switch 3 is turned on, the LED 8 is lighted by a part of the fed current, and the motor 5 is driven while charging the battery 7 with the remaining current. If the switch 3 is turned off, the LED 8 is lighted while charging the battery 7 with the fed current. When the charger 1 is not connected to the insertion port 2, if the switch is turned on, the motor 5 is driven by the electric power of the battery 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、回転式電動工具であって、充電式の電動工具としても交流式の電動工具としても使用可能なだけでなく、交流式の電動工具として使用しながら内臓された電池に充電することができる回転式電動工具に関するものである。   The present invention is a rotary electric tool that can be used not only as a rechargeable electric tool but also as an AC electric tool, but also to charge a built-in battery while being used as an AC electric tool. The present invention relates to a rotary electric tool that can be used.

従来の回転式電動工具のうち、充電することであらかじめ内臓された電池に電気を蓄え、この電池の電力によって制御回路やモータ等を駆動しているものがある（例えば、特許文献１参照）。
特開２００３−２０９９６０号公報（第２〜４頁、第１および２図） Among conventional rotary electric tools, there is one in which electricity is stored in a battery built in in advance by charging and a control circuit, a motor, or the like is driven by the power of the battery (for example, see Patent Document 1).
Japanese Patent Application Laid-Open No. 2003-209960 (pages 2 to 4, FIGS. 1 and 2)

このような充電式の電動工具は、使用する際、必ず電池を一定レベルまで充電しておかなければならず、使用中にある程度電力を消費した場合には、必ず一定時間使用を止めて、再度電池を充電し直さないと使用できない。したがって、電池の容量によって決まる所定の時間以上は続けて使用することができないため、工具一回の使用に付き作業時間が制限され、連続作業を行うことができない。   When using such a rechargeable power tool, the battery must be charged to a certain level, and if power is consumed to some extent during use, be sure to stop using it for a certain period of time. It cannot be used unless the battery is recharged. Therefore, since it cannot be used continuously for a predetermined time or more determined by the capacity of the battery, the working time is limited for one use of the tool, and continuous work cannot be performed.

本発明は、作業を行いながら電池の充電ができるようにすることで、充電のたびに一時的に使用を止める必要をなくし、継続して作業を行うことができる回転式電動工具を提供することを目的とする。   The present invention provides a rotary electric tool capable of continuously performing work by eliminating the need to temporarily stop use every time the battery is charged by allowing the battery to be charged while performing the work. With the goal.

上記の課題を解決するために、本発明の回転式電動工具（以下、電動工具ともいう）は、交流電流を直流電流に変換して出力可能な充電器、充電器用プラグの差込口、スイッチ、駆動ユニット、電動機、電池、発光ダイオード（以下、ＬＥＤともいう）、ケーシングを備えた回転式電動工具において、
前記差込口に充電器を接続して給電している時に、前記スイッチをオンにすれば、給電され電流の一部で前記ＬＥＤを点灯させ、残りの電流で前記電池を充電するとともに、前記電動機を駆動し、前記スイッチをオフにすれば、給電された電流で前記電池を充電するとともに、前記ＬＥＤを点灯させ、前記差込口に充電器を接続していない時に、前記スイッチをオンにすれば、前記電池の電力で電動機を駆動させる回路を具備するとともに、前記電池に流れる充電電流が所定値以上にならないように抑制するとともに、充電電流が不足している場合には、前記充電器から不足分を供給させるように働き、且つ前記電池７の満充電時には前記ＬＥＤを点滅させるか、若しくは点灯させないようにするコントロールパネルを前記ケーシング内に設けたことを特徴としている。 In order to solve the above-described problems, a rotary electric tool (hereinafter, also referred to as an electric tool) of the present invention includes a charger capable of converting an alternating current into a direct current and outputting the direct current, an outlet of a charger plug, a switch In a rotary electric tool provided with a drive unit, an electric motor, a battery, a light emitting diode (hereinafter also referred to as LED), and a casing,
When supplying power by connecting a charger to the outlet, if the switch is turned on, the LED is turned on with a part of the supplied current, the battery is charged with the remaining current, and the battery When the motor is driven and the switch is turned off, the battery is charged with the supplied current, the LED is turned on, and the switch is turned on when the charger is not connected to the outlet. In this case, a circuit for driving the electric motor with the electric power of the battery is provided, the charging current flowing through the battery is suppressed so as not to exceed a predetermined value, and when the charging current is insufficient, the charger A control panel is provided in the casing that serves to supply the shortage from the battery and that causes the LED to blink or not light when the battery 7 is fully charged. It is characterized in that was.

また、前記コントロールパネルを、集積回路、第１の抵抗、第１のダイオード、第２のダイオードとを直列に接続した構成とし、前記差込口から給電された電流が、前記の電池、集積回路、第１の抵抗、第１のダイオードの順に流れて再び前記差込口に流れ込むと同時に、前記ＬＥＤ、第２の抵抗を経て前記差込口に流れ込む回路と、前記スイッチをオンにした時に、前記差込口から給電された電流の一部が、前記スイッチを介して電動機に流れた後に前記差込口に流れ込む回路とを具備させても良い。   Further, the control panel has a configuration in which an integrated circuit, a first resistor, a first diode, and a second diode are connected in series, and the current fed from the insertion port is the battery, the integrated circuit When the switch is turned on, the first resistor and the first diode flow in this order and flow into the insertion port again, and at the same time, the LED, a circuit that flows into the insertion port through the second resistance, A circuit may be provided in which a part of current supplied from the insertion port flows into the insertion port after flowing into the electric motor via the switch.

本発明の回転式電動工具によれば、充電のために電池を取り出さなくても良く、前記差込口に充電器を接続することで電動工具に電力を供給して、前記電池を充電することができると同時に、前記充電器の電力を電動機に供給して、前記電動工具を通常の状態で使用がすることができる。また、前記コントロールパネルにより、前記充電器から供給されて前記電池に流れる充電電流が、所定の値になるように制御されるので、適切な充電状態とすることができ、前記電池の過充電による破損を避けることができる。   According to the rotary electric tool of the present invention, the battery does not have to be taken out for charging, and the battery is charged by supplying power to the electric tool by connecting a charger to the insertion port. At the same time, the power of the charger can be supplied to the electric motor, and the electric tool can be used in a normal state. In addition, since the charging current supplied from the charger and flowing through the battery is controlled by the control panel so as to have a predetermined value, an appropriate charging state can be obtained, and the battery is overcharged. Damage can be avoided.

本発明の利点は、電動工具の電池の電力が不足している場合でも、充電器を接続すれば直ぐに電動工具を通常の状態で使用でき、且つ電池を適切な充電状態にすることができる、電池の充電と電動工具の使用とを平行して行える点である。   The advantage of the present invention is that even when the power of the battery of the power tool is insufficient, the power tool can be used in a normal state as soon as the charger is connected, and the battery can be properly charged. The battery charging and the power tool can be used in parallel.

図１に示すように、回転式電動工具１０は、交流電流を直流電流に変換して出力可能な充電器１、充電器用プラグの差込口２、スイッチ３、駆動ユニット４、電動機５、電池７、ＬＥＤ８、コントロールパネル６等をケーシング９内に配設したものである。   As shown in FIG. 1, a rotary electric tool 10 includes a charger 1 capable of converting an alternating current into a direct current and outputting it, a plug plug port 2, a switch 3, a drive unit 4, an electric motor 5, and a battery. 7, the LED 8, the control panel 6, and the like are arranged in the casing 9.

そして、図２に示すように、差込口２の出力側に電池７と、電動機５を接続したスイッチ３とを並列に接続するとともに、電池７とスイッチ３との出力側をそれぞれコントロールパネル６に接続し、コントロールパネル６の出力側を差込口２に接続することにより閉じた回路を構成している。ＬＥＤ８は、電池７やスイッチ３および集積回路ＩＣと並列になるように回路内に接続されている。   As shown in FIG. 2, the battery 7 and the switch 3 connected to the electric motor 5 are connected in parallel to the output side of the outlet 2, and the output side of the battery 7 and the switch 3 is connected to the control panel 6 respectively. The closed circuit is configured by connecting the output side of the control panel 6 to the insertion port 2. The LED 8 is connected in the circuit so as to be in parallel with the battery 7, the switch 3, and the integrated circuit IC.

したがって、差込口２に充電器１を接続して給電している時には、スイッチ３をオンにすれば、給電された電流の一部でＬＥＤ８を点灯させることができ、残りの電流で電池７を充電するとともに、電動機５を駆動させることができる。また、スイッチ３をオフにすれば、給電された電流で電池７を充電するとともに、ＬＥＤ８を点灯させることができる。それから、差込口２に充電器１を接続していない場合には、スイッチ３をオンにすれば、電池７の電力を供給して電動機５を駆動させることができる。   Therefore, when the charger 1 is connected to the insertion port 2 to supply power, if the switch 3 is turned on, the LED 8 can be turned on with a part of the supplied current, and the battery 7 is used with the remaining current. And the electric motor 5 can be driven. If the switch 3 is turned off, the battery 7 can be charged with the supplied current and the LED 8 can be turned on. Then, when the charger 1 is not connected to the outlet 2, if the switch 3 is turned on, the electric power of the battery 7 can be supplied to drive the electric motor 5.

コントロールパネル６は、電池７を流れる充電電流が所定値以上にならないように抑制するとともに、充電電流が不足している場合には、充電器１から不足分を供給させるように働く。また、電池７の満充電時にはＬＥＤ８を点滅させるか、若しくは点灯させないようにすることもできる。   The control panel 6 suppresses the charging current flowing through the battery 7 from becoming a predetermined value or more, and works to supply the shortage from the charger 1 when the charging current is insufficient. Further, the LED 8 can be blinked or not lit when the battery 7 is fully charged.

このコントロールパネル６は、集積回路ＩＣと第１の抵抗Ｒ１と第１のダイオードＤ１と第２のダイオードＤ２とを直列に接続して構成されている。そして、このコントロールパネル６を用いて、差込口２から供給された直流電流が電池７、集積回路ＩＣ、第１の抵抗Ｒ１、第１のダイオードＤ１の順で流れ再び差込口２に流れ込むと同時に、ＬＥＤ８と第２の抵抗Ｒ２を経て差込口２に流れ込む回路と、スイッチ３がオンの時に、差込口２から供給された直流電流の一部がスイッチ３を介して電動機５に流れた後に再び差込口２に流れ込むような回路とが構成されている。   The control panel 6 is configured by connecting an integrated circuit IC, a first resistor R1, a first diode D1, and a second diode D2 in series. Then, using this control panel 6, the direct current supplied from the insertion port 2 flows in the order of the battery 7, the integrated circuit IC, the first resistor R1, and the first diode D1, and flows again into the insertion port 2. At the same time, a circuit that flows into the insertion port 2 through the LED 8 and the second resistor R2 and a part of the direct current supplied from the insertion port 2 to the electric motor 5 through the switch 3 when the switch 3 is on. A circuit that flows into the insertion port 2 again after flowing is configured.

このような電動工具１０は、電池７の充電量が不足している場合には、充電器１を差込口２に接続して電動工具１０に給電を行う。すると、電池７、集積回路ＩＣ、第１の抵抗Ｒ１、第１のダイオードＤ１からなる回路に電流が流れ電池７が充電される。この際、コントロールパネル６の集積回路ＩＣと第１の抵抗Ｒ１とにより、電池７に流れる充電電流が、所定値以上にならないように制限されるので、過電流による電池７の損傷等を避けることができる。また同時に、ＬＥＤ８と抵抗Ｒ１とにも電流が流れて、ＬＥＤ８が点灯する。こうして、ＬＥＤ８の点灯により電池７が充電状態にあることを確認できる。さらに、ＬＥＤ８が点滅したり、点灯しなくなったりすることにより、電池７が満充電の状態であることを知ることができる。   Such a power tool 10 supplies power to the power tool 10 by connecting the charger 1 to the insertion port 2 when the amount of charge of the battery 7 is insufficient. Then, a current flows through a circuit including the battery 7, the integrated circuit IC, the first resistor R1, and the first diode D1, and the battery 7 is charged. At this time, the integrated circuit IC of the control panel 6 and the first resistor R1 limit the charging current flowing through the battery 7 so as not to exceed a predetermined value, so avoid damage to the battery 7 due to overcurrent. Can do. At the same time, a current also flows through the LED 8 and the resistor R1, and the LED 8 is turned on. Thus, it can be confirmed that the battery 7 is in a charged state by the lighting of the LED 8. Furthermore, it can be known that the battery 7 is fully charged by the fact that the LED 8 blinks or stops lighting.

上記のように充電器１を差込口２に接続した状態でスイッチ３をオンにすれば、スイッチ３を介して電動機５にも電流を供給することができるので、電池７を充電しつつ電動機５を駆動させることができるのである。   If the switch 3 is turned on with the charger 1 connected to the insertion port 2 as described above, current can be supplied to the electric motor 5 via the switch 3, so that the electric motor can be charged while charging the battery 7. 5 can be driven.

そして、電池７を一定レベルまで充電すれば、充電器１を差込口２から外しておいても良い。この状態でスイッチ３をオンにすれば、電動機５が接続されたスイッチ３と第２のダイオードＤ２と電池７とからなる閉じた回路によって、電池７に充電された電流を電動機５へ供給できるからである。したがって、充電器１を用いることなく駆動ユニット４を動かし、作業を行うことができるのである。   If the battery 7 is charged to a certain level, the charger 1 may be removed from the insertion port 2. If the switch 3 is turned on in this state, the current charged in the battery 7 can be supplied to the motor 5 by the closed circuit including the switch 3, the second diode D2, and the battery 7 to which the motor 5 is connected. It is. Therefore, the drive unit 4 can be moved and used without using the charger 1.

また、スイッチ３の切替えによって、電動機５の電流の入力側と出力側とを入替えて回転方向を変えれるようになっている。これを具体的に説明すると、スイッチ３に接続されているスイッチレバー１１の上側を押えると、駆動ユニット４に接続されているチャック部１２を正回転させることができ、下側を押えると逆回転させることができるのである（図３参照）。したがって、ドライバービット等を装着すれば、ネジの取付・取外しを１つのレバーの操作だけで簡単に行なえる電動ドライバーとして使用できる。   Further, by switching the switch 3, the direction of rotation can be changed by switching the current input side and output side of the electric motor 5. Specifically, when the upper side of the switch lever 11 connected to the switch 3 is pressed, the chuck portion 12 connected to the drive unit 4 can be rotated forward, and when the lower side is pressed, the reverse rotation is performed. (See FIG. 3). Therefore, if a screwdriver bit or the like is attached, the screw can be used as an electric screwdriver that can be easily attached and removed by operating a single lever.

スイッチレバー１１にはロック機構が設けられており、グリップ部分のスイッチレバー１１付近にある、切換スイッチ１３を上側に押し上げた状態にすれば、スイッチレバー１１をロックすることができ、下側に下げた状態にすれば、スイッチレバー１１のロックを解除することができる。これにより、スイッチレバー１１をロックして、ビットを固定するチャック部１２の不用意な回転を防止できるようになっている。さらに、ケーシング９のグリップ部分には、表面に細かい凹凸を形成し滑り止め１４を設けているので、より安全に電動工具１０を扱うことができる。   The switch lever 11 is provided with a lock mechanism, and the switch lever 11 can be locked and lowered downward when the changeover switch 13 in the vicinity of the switch lever 11 in the grip portion is pushed upward. In this state, the lock of the switch lever 11 can be released. As a result, the switch lever 11 is locked to prevent inadvertent rotation of the chuck portion 12 that fixes the bit. Furthermore, since the grip portion of the casing 9 is formed with fine irregularities on the surface and the anti-slip 14 is provided, the electric tool 10 can be handled more safely.

チャック部１２は、先端部をケーシング９の外側に突設させた状態で駆動ユニット４に接続されており、その先端部からビットの後端部を挿入したうえで、電動工具１０の先端部のカバー１５を回転させると、ビットの固定ができるようになっている。   The chuck portion 12 is connected to the drive unit 4 with the tip portion protruding from the casing 9. After inserting the rear end portion of the bit from the tip portion, the chuck portion 12 is connected to the tip portion of the electric tool 10. When the cover 15 is rotated, the bit can be fixed.

本発明に係る回転式電動工具の内部構造を示す説明図である。It is explanatory drawing which shows the internal structure of the rotary electric tool which concerns on this invention. コントロールパネルの配線図である。It is a wiring diagram of a control panel. 本発明に係る回転式電動工の正面図である。It is a front view of a rotary electrician according to the present invention.

符号の説明Explanation of symbols

１ 充電器
２ 差込口
３ スイッチ
４ 駆動ユニット
５ 電動機
６ コントロールパネル
７ 電池
８ 発光ダイオード（ＬＥＤ）
９ ケーシング
１０ 回転式電動工具（電動工具）
１１ スイッチレバー
１２ チャック部
１３ 切換スイッチ
１４ 滑り止め
１５ カバー DESCRIPTION OF SYMBOLS 1 Charger 2 Socket 3 Switch 4 Drive unit 5 Electric motor 6 Control panel 7 Battery 8 Light emitting diode (LED)
9 Casing 10 Rotary power tool (power tool)
11 Switch lever 12 Chuck part 13 Changeover switch 14 Non-slip 15 Cover

Claims (2)

交流電流を直流電流に変換して出力可能な充電器（１）、充電器用プラグの差込口（２）、スイッチ（３）、駆動ユニット（４）、電動機（５）、電池（７）、発光ダイオード（８）、ケーシング（９）を備えた回転式電動工具において、
差込口（２）に充電器（１）を接続して給電している時に、スイッチ（３）をオンにすれば、給電された電流の一部で発光ダイオード（８）を点灯させ、残りの電流で電池（７）を充電するとともに、電動機（５）を駆動し、スイッチ（３）をオフにすれば、給電された電流で電池（７）を充電するとともに、発光ダイオード（８）を点灯させ、差込口（２）に充電器（１）を接続していない時に、スイッチ（３）をオンにすれば、電池（７）の電力で電動機（５）を駆動させる回路を備え、電池（７）に流れる充電電流が所定値以上にならないように抑制するとともに、充電電流が不足している場合には、充電器（１）から不足分を供給させるように働き、且つ電池（７）の満充電時には発光ダイオード（８）を点滅させるか、若しくは点灯させないようにするコントロールパネル（６）をケーシング（９）内に設けたことを特徴とする回転式電動工具。 A charger (1) capable of converting an alternating current into a direct current and outputting it, a plug plug inlet (2), a switch (3), a drive unit (4), an electric motor (5), a battery (7), In the rotary electric tool including the light emitting diode (8) and the casing (9),
If the switch (3) is turned on while the charger (1) is connected to the outlet (2) and power is supplied, the light emitting diode (8) is turned on with a part of the supplied current, and the rest When the battery (7) is charged with the current of the current, the motor (5) is driven, and the switch (3) is turned off, the battery (7) is charged with the supplied current and the light emitting diode (8) is turned on. When the switch (3) is turned on when the charger (1) is not connected to the outlet (2), the electric motor (5) is driven by the power of the battery (7). The charging current flowing through the battery (7) is suppressed so as not to exceed a predetermined value, and when the charging current is insufficient, the battery (7) functions to supply the shortage, and the battery (7 ) Light up the light emitting diode (8) when fully charged Rotary power tool, characterized in that the control panel (6) provided in the casing (9) to prevent let. コントロールパネル（６）が、集積回路（ＩＣ）と第１の抵抗（Ｒ１）と第１のダイオード（Ｄ１）と第２のダイオード（Ｄ２）とを直列に接続した構成となっており、差込口（２）から給電された電流が、電池（７）、集積回路（ＩＣ）、第１の抵抗（Ｒ１）、第１のダイオード（Ｄ１）の順に流れて再び差込口（２）に流れ込むと同時に、発光ダイオード（８）と第２の抵抗（Ｒ２）を経て差込口（２）に流れ込む回路と、スイッチ（３）をオンにした時に、差込口（２）から給電された電流の一部が、スイッチ（３）を介して電動機（５）に流れた後に差込口（２）に流れ込む回路とを備えていることを特徴とする請求項１記載の回転式電動工具。   The control panel (6) has a configuration in which an integrated circuit (IC), a first resistor (R1), a first diode (D1), and a second diode (D2) are connected in series. The current supplied from the port (2) flows in the order of the battery (7), the integrated circuit (IC), the first resistor (R1), and the first diode (D1), and then flows into the insertion port (2) again. At the same time, a circuit that flows into the insertion port (2) through the light emitting diode (8) and the second resistor (R2), and a current fed from the insertion port (2) when the switch (3) is turned on. The rotary electric tool according to claim 1, further comprising a circuit that flows into the insertion port (2) after flowing into the electric motor (5) via the switch (3).
JP2003332186A 2003-09-24 2003-09-24 Rotary power tool Pending JP2005096023A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920490A (en) * 2009-06-16 2010-12-22 株式会社牧田 Electric tool
CN103158119A (en) * 2011-12-08 2013-06-19 株式会社牧田 Electric power tool
JP2013230529A (en) * 2012-04-30 2013-11-14 Hitachi Koki Co Ltd Power tool
JP2014018865A (en) * 2012-07-12 2014-02-03 Hitachi Koki Co Ltd Power tool
US9427859B2 (en) 2013-01-08 2016-08-30 Techtrnoic Outdoor Products Technology Limited Motor system for dual voltage devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920490A (en) * 2009-06-16 2010-12-22 株式会社牧田 Electric tool
CN103158119A (en) * 2011-12-08 2013-06-19 株式会社牧田 Electric power tool
JP2013230529A (en) * 2012-04-30 2013-11-14 Hitachi Koki Co Ltd Power tool
JP2014018865A (en) * 2012-07-12 2014-02-03 Hitachi Koki Co Ltd Power tool
US9427859B2 (en) 2013-01-08 2016-08-30 Techtrnoic Outdoor Products Technology Limited Motor system for dual voltage devices

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