JP2515937Y2 - Electric tool - Google Patents

Electric tool

Info

Publication number
JP2515937Y2
JP2515937Y2 JP1989141393U JP14139389U JP2515937Y2 JP 2515937 Y2 JP2515937 Y2 JP 2515937Y2 JP 1989141393 U JP1989141393 U JP 1989141393U JP 14139389 U JP14139389 U JP 14139389U JP 2515937 Y2 JP2515937 Y2 JP 2515937Y2
Authority
JP
Japan
Prior art keywords
motor
power
workpiece
operation button
switching
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 - Lifetime
Application number
JP1989141393U
Other languages
Japanese (ja)
Other versions
JPH0379278U (en
Inventor
栄二 坂田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyushu Hitachi Maxell Ltd
Original Assignee
Kyushu Hitachi Maxell Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyushu Hitachi Maxell Ltd filed Critical Kyushu Hitachi Maxell Ltd
Priority to JP1989141393U priority Critical patent/JP2515937Y2/en
Publication of JPH0379278U publication Critical patent/JPH0379278U/ja
Application granted granted Critical
Publication of JP2515937Y2 publication Critical patent/JP2515937Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Mechanisms For Operating Contacts (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は電動工具に係り、工作体を駆動するモータへ
の給電量を随時増大して、必要に応じて工作体を強く駆
動できるようにしたものである。
[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a power tool, and increases the amount of power supplied to a motor for driving a work piece at any time so that the work piece can be strongly driven as needed. It was done.

(従来の技術) ねじ回し、穴あけなどを行う電動工具は、本体部に設
けられた工作体をモータにより駆動しながら、所望の工
作作業を行うようになっている。
(Prior Art) An electric power tool for screwing, drilling, and the like is designed to perform a desired work operation while driving a work body provided in a main body by a motor.

(考案が解決しようとする課題) ところで上記のように工作作業を行う場合、工作体を
通常よりも強く駆動したい場合がある。このような場合
とは、例えばねじ込みの終了時に、ねじを対象物に強く
ねじ込むための増し締めを行う場合や、対象物に強く食
い込んで錆付いたねじを強く逆回しして対象物から取り
はずす場合、あるいは材木の節目のような硬い対象物に
穴あけを行うような場合である。
(Problems to be solved by the invention) By the way, in the case of performing the work operation as described above, there are cases where it is desired to drive the work body stronger than usual. In such a case, for example, at the end of screwing, when performing retightening for strongly screwing the screw into the target object, or when strongly screwing into the target object and strongly turning the rusted screw backwards to remove from the target object, Alternatively, it is a case where a hard object such as a knot of timber is drilled.

ところが従来の電動工具は、工作体の駆動力は一定で
あって、随時強く駆動して、上記のような場合に対応す
ることはできない問題があった。
However, the conventional electric power tool has a problem that the driving force of the work body is constant, and the power tool is strongly driven at any time to cope with the above case.

したがって本考案は、上記のような場合に対応できる
ように、工作体を随時強く駆動できる電動工具を提供す
ることを目的とする。
Therefore, an object of the present invention is to provide an electric tool capable of strongly driving a work piece at any time so as to cope with the above case.

(課題を解決するための手段) このために本考案は、本体部1に設けられた工作体10
を、モータMにより駆動するようにした電動工具におい
て、上記モータMの駆動用電器回路に、このモータMへ
の給電量の切換回路19を設け、かつ電動工具の壁面に、
この切換回路19の給電量の増加側への切換用操作釦4を
設けるとともに、該釦4を工作体10の軸方向と同一軸心
線N上に操作方向を有す常開型押圧式としたものであ
る。
(Means for Solving the Problem) For this purpose, the present invention provides a workpiece 10 provided on the main body 1.
In a power tool driven by a motor M, a drive electric circuit for the motor M is provided with a switching circuit 19 for the amount of power supplied to the motor M, and a wall surface of the power tool is
The switching circuit 19 is provided with a switching operation button 4 for increasing the power supply amount, and the button 4 is of a normally open type having an operating direction on the same axis N as the axial direction of the workpiece 10. It was done.

(作用) 上記構成において増し締め等を行うために、工作体10
を強く駆動したい場合には、操作釦4を押圧操作する。
するとモータMへの給電量は増大し、工作体10は、工作
物方向に押圧されながら強く駆動する。
(Operation) In the above configuration, in order to perform the additional tightening, the workpiece 10
When it is desired to strongly drive, the operation button 4 is pressed.
Then, the amount of power supplied to the motor M increases, and the workpiece 10 is strongly driven while being pressed toward the workpiece.

(実施例1) 次に、図面を参照しながら本考案の実施例を説明す
る。
(Embodiment 1) Next, an embodiment of the present invention will be described with reference to the drawings.

第1図は電動工具の使用中の斜視図であって、1は棒
状の本体部であり、その先端部にはねじ20を回す工作体
10が着脱自在に装着されている。本体部1の後部には握
り部2が垂設されており、またその下部には電源ユニッ
ト3が着脱自在に装着されている。
FIG. 1 is a perspective view of a power tool in use, in which 1 is a rod-shaped main body, and a workpiece on which a screw 20 is turned at the tip thereof.
10 is attached detachably. A grip portion 2 is vertically provided at a rear portion of the main body portion 1, and a power supply unit 3 is detachably attached to a lower portion thereof.

第2図は要部の断面を示すものであって、本体部1に
は上記工作体10を駆動するモータMが収納されており、
またその後端面には押圧式の操作釦4が設けられてい
る。5はその内面に設けられたスイッチ体である。この
操作釦4は、本体部1や工作体10と同一軸心線N上に設
けられており、ばね力によりスイッチ体4が開いた状態
を維持するいわゆる常開型の押圧式である。この操作釦
4を指先にて強く押圧すると、工作体10は工作対象物へ
押し付けられながら、スイッチ5が作動し、給電量が増
加する方向へ変化する。
FIG. 2 shows a cross section of the main part, in which the motor M for driving the workpiece 10 is housed in the main body 1.
A push-type operation button 4 is provided on the rear end surface. Reference numeral 5 is a switch body provided on the inner surface thereof. The operation button 4 is provided on the same axial center line N as the main body 1 and the workpiece 10 and is a so-called normally open type pressing type that maintains the switch body 4 in an open state by a spring force. When the operation button 4 is strongly pressed with the fingertip, the workpiece 10 is pressed against the workpiece and the switch 5 is activated to change the power supply amount.

電源ユニット3の内部には、充電池6が複数個収納さ
れている。複数個の充電池6のうちの1個は補助用充電
池であり、その詳細は後述する。握り部2の前面には、
押圧式の電源スイッチ釦7が装着されており、このスイ
ッチ釦7を押圧すると、スイッチ体8が投入され、モー
タMは駆動する。9は充電池6とモータMを接続するリ
ード線、11,12,13は接触端子である。
A plurality of rechargeable batteries 6 are housed inside the power supply unit 3. One of the plurality of rechargeable batteries 6 is an auxiliary rechargeable battery, the details of which will be described later. On the front of the grip 2,
A push type power switch button 7 is mounted, and when the switch button 7 is pushed, the switch body 8 is turned on and the motor M is driven. Reference numeral 9 is a lead wire for connecting the rechargeable battery 6 and the motor M, and 11, 12, 13 are contact terminals.

第3図はモータMの駆動用電気回路を示すものであっ
て、図示するように、複数個の充電池6(6a,6a・・
・)は、上記各釦4,7と直列に接続されており、またこ
れとは別個に、1個の補助用充電池6bがダイオード15を
介して接続されている。17,18は電流調整用抵抗体であ
る。上記操作釦4は、ばねによりスイッチ体4は開いて
おり、したがって通常は充電池6a,6a・・・側の端子a
に接続されているが、これを押圧すると、充電池6b側の
端子bに接続され、全ての充電池6a〜6bは直列に接続さ
れる。このように通常の端子aに接続された状態では、
一方の充電池6a,6a・・・の電力だけがモータMに給電
され、また端子bに接続されると、充電池6a,6a・・・
の電力に、他方の充電池6bの電力が加算され増加してモ
ータMに給電され、モータMの回転力は増大して工作体
10は強く駆動する。すなわち、操作釦4や充電池6bは、
モータMへの給電量の切換回路19を構成しており、操作
釦4はその切換用操作釦となっている。
FIG. 3 shows an electric circuit for driving the motor M. As shown in the drawing, a plurality of rechargeable batteries 6 (6a, 6a ...
() Is connected in series with each of the buttons 4 and 7, and separately from this, one auxiliary rechargeable battery 6b is connected via the diode 15. Reference numerals 17 and 18 are current adjusting resistors. In the operation button 4, the switch body 4 is opened by a spring, and therefore the rechargeable batteries 6a, 6a ...
When it is pressed, it is connected to the terminal b on the rechargeable battery 6b side, and all the rechargeable batteries 6a to 6b are connected in series. In this way, when connected to the normal terminal a,
When only the electric power of one of the rechargeable batteries 6a, 6a ... Is supplied to the motor M and connected to the terminal b, the rechargeable batteries 6a, 6a.
The power of the other rechargeable battery 6b is added to the power of the other to increase and the power is supplied to the motor M, and the rotational force of the motor M increases to increase the workpiece.
10 drives strongly. That is, the operation button 4 and the rechargeable battery 6b are
A switching circuit 19 for switching the amount of power supplied to the motor M is configured, and the operation button 4 is a switching operation button.

16は充電用アダプタであって、充電を行うときは、操
作釦4は充電池6a,6a・・・側の端子aに接続し、アダ
プタ16を電源ユニット3に接続する。すると充電電流
は、充電池6a,6a・・・側と、充電池6b側の両方へ流
れ、全ての充電池6a〜6bを同時に充電する。
Reference numeral 16 is a charging adapter, and when charging is performed, the operation button 4 is connected to the terminal a on the rechargeable batteries 6a, 6a ... Side, and the adapter 16 is connected to the power supply unit 3. Then, the charging current flows to both the rechargeable batteries 6a, 6a ... Side and the rechargeable battery 6b side to charge all the rechargeable batteries 6a to 6b at the same time.

この電動工具は上記のような構成より成り、例えばね
じ20のねじ込みを行うときは、握り部2を保持して工作
体10をねじ20に係合させ、電源スイッチ釦7を操作す
る。通常は、操作釦4は端子a側に投入されており、し
たがってモータMへは充電池6a,6a・・・から給電され
て工作体10は回転し、ねじ20はねじ込まれる。最後に増
し締めを行うときは、操作釦4は端子b側に投入され
て、モータMには充電池6a,6a・・・の電力に、充電池6
bの電力が加算されて給電され、工作体10は強く駆動し
てねじ20は強くねじ込まれる。この場合、操作釦4を指
先にて強く押圧すれば、本体部1は後押しされて工作体
10はねじ20に強く押し付けられ、工作体10がねじ20の頭
から逸れることなくねじ20を強くねじ込むことができ
る。
This electric tool has the above-described structure. For example, when screwing in the screw 20, the grip 10 is held, the workpiece 10 is engaged with the screw 20, and the power switch button 7 is operated. Normally, the operation button 4 is turned on the side of the terminal a, so that the motor M is supplied with power from the rechargeable batteries 6a, 6a ..., The workpiece 10 rotates, and the screw 20 is screwed. When the final tightening is performed, the operation button 4 is turned on to the terminal b side, and the motor M receives the power of the rechargeable batteries 6a, 6a ...
The electric power of b is added and supplied, the workpiece 10 is strongly driven, and the screw 20 is strongly screwed. In this case, if the operation button 4 is strongly pressed with a fingertip, the main body 1 is pushed backward and
The 10 is squeezed against the screw 20 so that the workpiece 10 can be screwed in tightly without the work piece 10 deviating from the head of the screw 20.

第4図は電気回路の他の実施例を示すものであって、
上記抵抗体18はアダプタ16側に設けられている。このも
のも、電源ユニット3にアダプタ16を接続すると、全て
の充電池6a〜6bは同時に充電される。操作釦4は電源ユ
ニット3側に設けられており、本体部1にこのような機
能のスイッチを設けていないものにも使用できるように
している。使用時には、操作釦4を随時操作して端子a
または端子bに切り換え接続することにより、モータM
への給電量を制御できる。
FIG. 4 shows another embodiment of the electric circuit,
The resistor 18 is provided on the adapter 16 side. Also in this case, when the adapter 16 is connected to the power supply unit 3, all the rechargeable batteries 6a to 6b are charged at the same time. The operation button 4 is provided on the power supply unit 3 side so that it can be used even if the main body 1 is not provided with such a switch. When using, operate the operation button 4 as needed to
Alternatively, by switching and connecting to the terminal b, the motor M
It is possible to control the amount of power supplied to.

また第5図の電気回路は、操作釦4と並列にダイオー
ド21が設けられている。通常は、操作ボタン4はオフで
あって、この状態で、ダイオード21による電圧降下分
(例えば1V)を差し引いた分がモータMに給電される。
また操作釦4を投入すると、ダイオード21の両端部は短
絡され、充電池6は全電力はすべてモータMに給電され
て、工作体10は強く駆動する。このようにモータMへの
給電量を制御する手段は種々考えられる。
In the electric circuit shown in FIG. 5, a diode 21 is provided in parallel with the operation button 4. Normally, the operation button 4 is off, and in this state, the motor M is supplied with power by subtracting the voltage drop (for example, 1 V) due to the diode 21.
When the operation button 4 is turned on, both ends of the diode 21 are short-circuited, the rechargeable battery 6 is entirely supplied to the motor M, and the workpiece 10 is strongly driven. Various means for controlling the amount of power supplied to the motor M in this manner are conceivable.

また上記実施例は、いずれも給電量増大用の予備充電
池6bを主充電池6aに直列に挿入するように構成したが、
主充電池6aと同一電圧の予備充電池6b(この場合は容量
は小さくても良い)を並列に接続し、主充電池6aの重負
荷時の電圧降下を捕捉するよう構成することも可能であ
る。
Further, in each of the above embodiments, the auxiliary rechargeable battery 6b for increasing the power supply amount is configured to be inserted in series with the main rechargeable battery 6a.
It is also possible to connect the main rechargeable battery 6a and a spare rechargeable battery 6b having the same voltage (in this case, the capacity may be small) in parallel to capture the voltage drop when the main rechargeable battery 6a is under heavy load. is there.

(考案の効果) 以上説明したように本考案は、本体部1に設けられた
工作体10を、モータMにより駆動するようにした電動工
具において、上記モータMの駆動用電器回路に、このモ
ータMへの給電量の切換回路19を設け、かつ電動工具の
壁面に、この切換回路19の給電量の増加側への切換用操
作釦4を設けるとともに、該釦4を工作体10の軸方向と
同一軸心線N上に操作方向を有す常開型押圧式としたの
で、 A.切換用操作釦を操作することにより、モータMへの給
電量を適時増大し必要に応じて工作体を強く駆動させる
ことができる。
(Effects of the Invention) As described above, according to the present invention, in the electric tool in which the workpiece 10 provided in the main body 1 is driven by the motor M, the electric motor circuit for driving the motor M is provided with the motor. A switching circuit 19 for switching the amount of power supplied to M is provided, and an operation button 4 for switching the switching circuit 19 to increase the amount of power supply is provided on the wall surface of the power tool, and the button 4 is arranged in the axial direction of the workpiece 10. Since it is a normally open pressing type that has an operating direction on the same axis N as the above, A. By operating the switching operation button, the amount of power supplied to the motor M is increased in a timely manner, and if necessary, the workpiece. Can be driven strongly.

という駆動力のワンタッチ切り換えによる操作性の向上
効果に加え、 切換用操作釦の操作方向を工作体の軸方向と同一軸心
線上に設定したので、 B.切換用操作釦の押圧操作時に工作体の軸がぶれるのを
防止できる。
In addition to the effect of improving the operability by one-touch switching of the driving force, the operating direction of the switching operation button is set on the same axis as the axial direction of the workpiece, so B. When pressing the switching operation button, the workpiece is pressed. It is possible to prevent the shaft from shaking.

という作用効果を奏し、さらには、 切換用操作釦を常開型押圧式としているので、 C.通常はノーマルな作業に最適な駆動力が設定されてい
るので、謝って過度な駆動力が被工作物に加わるのを未
然に防止でき、強力な駆動力を必要としている場合のみ
に限定して利用できる。
In addition, since the switching operation button is of the normally open type, C. Normally, the optimum driving force is set for normal work, so apologize for excessive driving force. It can be prevented from being added to the work piece and can be used only when a strong driving force is required.

という作用効果を奏する。This has the operational effect of:

また釦が、工作体に向かって押す方向に(しかも同一
軸心線状に)設定されているので、 D.一般の電動工具において使用者が駆動力を必要として
いる際にとる行動と一致し(例えば電動ドライバーであ
れば、ねじがかたいときにはねじ山が潰れないように押
しつけるし、また電動ドリルであればドリルの回転力に
よる推進力を加えようとして工具自体を押しつける行為
をとる)、操作時の力の分散が避けられるのでなく、使
用意図が外見で直観的に判断でき不慣れな使用者であっ
ても十分に活用できる。
Also, since the button is set in the direction to push toward the work piece (and in the same axis), it is consistent with the action taken by the user when driving power is required for general electric tools. (For example, if it is an electric screwdriver, when the screw is hard, push it so that the screw thread does not collapse, and if it is an electric drill, push the tool itself in order to apply the propulsive force by the rotating force of the drill) Not only is it possible to avoid the dispersion of force over time, but it is also possible to make an intuitive judgment based on the appearance of the user's intentions, and it is possible to make full use of this even for unfamiliar users.

という作用効果を奏するものである。That is, the effect is obtained.

【図面の簡単な説明】[Brief description of drawings]

図は本考案の実施例を示すものであって、第1図は電動
工具の斜視図、第2図は要部断面図、第3図,第4図,
第5図は電気回路図である。 1……本体部 4……操作釦 10……工作体 19……切換回路 M……モータ
FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of an electric power tool, FIG. 2 is a sectional view of an essential part, FIG. 3, FIG.
FIG. 5 is an electric circuit diagram. 1 ... Main body 4 ... Operation button 10 ... Workpiece 19 ... Switching circuit M ... Motor

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項1】本体部1に設けられた工作体10を、モータ
Mにより駆動するようにした電動工具において、上記モ
ータMの駆動用電器回路に、このモータMへの給電量の
切換回路19を設け、かつ電動工具の壁面に、この切換回
路19の給電量の増加側への切換用操作釦4を設けるとと
もに、該釦4を工作体10の軸方向と同一軸心線N上に操
作方向を有す常開型押圧式としたことを特徴とする電動
工具。
1. A power tool in which a work body 10 provided in a main body 1 is driven by a motor M, and a circuit 19 for switching the amount of power supplied to the motor M in a drive electric circuit of the motor M. And a switching operation button 4 for switching the power supply amount of the switching circuit 19 to the side where the power supply amount is increased on the wall surface of the power tool, and the button 4 is operated on the same axis N as the axial direction of the workpiece 10. A power tool characterized by a unidirectional normally open type pressing type.
JP1989141393U 1989-12-06 1989-12-06 Electric tool Expired - Lifetime JP2515937Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989141393U JP2515937Y2 (en) 1989-12-06 1989-12-06 Electric tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989141393U JP2515937Y2 (en) 1989-12-06 1989-12-06 Electric tool

Publications (2)

Publication Number Publication Date
JPH0379278U JPH0379278U (en) 1991-08-13
JP2515937Y2 true JP2515937Y2 (en) 1996-11-06

Family

ID=31688293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989141393U Expired - Lifetime JP2515937Y2 (en) 1989-12-06 1989-12-06 Electric tool

Country Status (1)

Country Link
JP (1) JP2515937Y2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008023694A (en) * 2006-07-25 2008-02-07 Makita Corp Working tool
US8698430B2 (en) 2010-09-17 2014-04-15 Makita Corporation Variable speed switch and electric power tool with the variable speed switch mounted thereto
JP5766843B2 (en) * 2014-04-22 2015-08-19 株式会社マキタ Shift switch
JP7086866B2 (en) * 2016-06-03 2022-06-20 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Impulse wrench with auxiliary power control means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166835A2 (en) * 1984-07-02 1986-01-08 Augat Inc. Uniform insertion and removal force bottom-loaded electrical socket

Also Published As

Publication number Publication date
JPH0379278U (en) 1991-08-13

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