JP5407849B2 - Charging power tool - Google Patents

Charging power tool Download PDF

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JP5407849B2
JP5407849B2 JP2009296071A JP2009296071A JP5407849B2 JP 5407849 B2 JP5407849 B2 JP 5407849B2 JP 2009296071 A JP2009296071 A JP 2009296071A JP 2009296071 A JP2009296071 A JP 2009296071A JP 5407849 B2 JP5407849 B2 JP 5407849B2
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battery connector
battery
board
case
printed circuit
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JP2011136376A (en
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一弥 坂巻
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Max Co Ltd
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本発明は、充電インパクトドライバ等の充電電動工具に関するものであり、特に、生産性、組付性と共に耐環境性を向上させ、さらには部品点数を削減しうるようにした充電電動工具に関するものである。   The present invention relates to a charging power tool such as a charging impact driver, and more particularly to a charging power tool that can improve environment resistance as well as productivity and assemblability, and further reduce the number of parts. is there.

一般に、充電インパクトドライバ等の充電電動工具には、工具の動作モードを切替える操作部を含む操作パネルと、該操作部からの操作信号を基にモータの最大回転数等を制御する制御回路を実装した基板(制御基板)とが備えられ、該操作パネル及び制御基板がバッテリパック取付部に近いハウジングの前方突出部に配置されている。   In general, charging power tools such as charging impact drivers are equipped with an operation panel that includes an operation unit that switches the operation mode of the tool, and a control circuit that controls the maximum number of revolutions of the motor based on an operation signal from the operation unit. The operation panel and the control board are arranged on the front projecting portion of the housing near the battery pack mounting portion.

これに関連する従来技術として、例えば、次のような可搬式電動工具が知られている。この従来技術は、制御回路を実装したプリント基板をモジュール化して制御回路モジュールとし、該制御回路モジュールをバッテリパック取付部に近いハウジングの前方突出部に内装している。そして、該制御回路モジュールに、バッテリパック取付部の前方突出部上面に設けた表示パネル及びモード切替え操作部を配線接続している(例えば、特許文献1参照)。   For example, the following portable electric tools are known as related arts. In this prior art, a printed circuit board on which a control circuit is mounted is modularized to form a control circuit module, and the control circuit module is housed in a front projecting portion of the housing near the battery pack mounting portion. A display panel and a mode switching operation unit provided on the upper surface of the front projecting portion of the battery pack mounting portion are connected to the control circuit module by wiring (for example, see Patent Document 1).

特開2005−144564号公報JP 2005-144564 A

充電電動工具において、バッテリパックに収納されたバッテリと、該バッテリからの電力で動作するモータや制御回路等との電気的な接続は、一般に両者間を電気的に結合するバッテリコネクタにより行われる。そして、該バッテリコネクタは、バッテリパック取付部側に設けられており、前記制御回路を実装した基板は、このバッテリコネクタ部分にねじ止めされてバッテリパック取付部に近いハウジングの前方突出部に配置されている。ところで、充電電動工具に組付けられる制御回路を実装した基板は、防塵、防湿等の耐環境性を高めることが求められるものであり、このためには、前記制御回路を実装した基板に対し通常、樹脂コーティング等が行われる。しかしながら、上記の場合は、バッテリコネクタに対する制御回路を実装した基板のねじ止めによる組付工程と、樹脂コーティング工程とが別工程になる上、樹脂コーティング工程は手作業となって生産性の低下を招くことになる。   In a charging electric tool, electrical connection between a battery housed in a battery pack and a motor, a control circuit, and the like that are operated by electric power from the battery is generally performed by a battery connector that electrically couples the two. The battery connector is provided on the battery pack mounting portion side, and the board on which the control circuit is mounted is screwed to the battery connector portion and disposed on the front projecting portion of the housing near the battery pack mounting portion. ing. By the way, a board on which a control circuit to be assembled to a charging electric tool is mounted is required to improve environmental resistance such as dustproof and moistureproof. Resin coating is performed. However, in the above case, the assembly process by screwing the board on which the control circuit for the battery connector is mounted and the resin coating process are separate processes, and the resin coating process is a manual operation, which reduces productivity. Will be invited.

また、特許文献1に記載の従来技術においては、制御回路を実装したプリント基板を制御回路モジュールとしてバッテリパック取付部に近いハウジングの前方突出部に内装している。この制御回路等を実装したプリント基板のモジュール化には、該プリント基板をケースに入れ、このケース内にエポキシ系、シリコーン系等の液状粘稠性樹脂を一定量滴下するポッティング処理により、前記制御回路を実装したプリント基板をエポキシ系、シリコーン系等の樹脂でコーティングするプラスチックパッケージとする方法が多く用いられる。しかし、この場合は、制御回路モジュールがバッテリコネクタから分離した形で形成されるため、該制御回路モジュールを該バッテリコネクタに対し電気的な配線接続を行うことが必要であり、また工具本体に対する制御回路モジュールの組付性も悪くなる。さらには、制御回路を実装したプリント基板をプラスチックパッケージとする際のケースも必要となって部品点数の増加や、該ケースを収容するスペースを確保するために工具本体の全高アップも招くことになる。   Moreover, in the prior art described in Patent Document 1, a printed circuit board on which a control circuit is mounted is provided as a control circuit module in a front projecting portion of the housing near the battery pack mounting portion. In order to modularize a printed circuit board on which this control circuit or the like is mounted, the printed circuit board is put in a case, and the control is performed by a potting process in which a predetermined amount of liquid viscous resin such as epoxy or silicone is dropped into the case A method of forming a plastic package in which a printed circuit board on which a circuit is mounted is coated with an epoxy resin, a silicone resin or the like is often used. However, in this case, since the control circuit module is formed separately from the battery connector, it is necessary to electrically connect the control circuit module to the battery connector and to control the tool body. Assembling of the circuit module also deteriorates. In addition, a case is required when the printed circuit board on which the control circuit is mounted is made into a plastic package, which increases the number of components and increases the overall height of the tool body to secure a space for housing the case. .

そこで、バッテリコネクタに基板を効率的に一体化して生産性、組付性と共に耐環境性を向上させ、さらには部品点数の削減や工具本体をコンパクトに設計するために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。   Therefore, there are technical issues to be solved in order to efficiently integrate the board into the battery connector to improve productivity and assembly performance as well as environmental resistance, and to reduce the number of parts and design the tool body compactly. The present invention aims to solve this problem.

本発明は上記目的を達成するために提案されたものであり、請求項1記載の発明は、バッテリパックに収納されたバッテリと該バッテリからの電力で動作するモータを含む所要の電子機器とがバッテリコネクタで電気的に結合され、該バッテリコネクタの近傍に前記モータを制御する制御回路の構成素子を含む所要の電子部品を実装した基板が配置されている充電電動工具であって、前記バッテリコネクタの四囲に側板部を立設して該バッテリコネクタをケース化し、該バッテリコネクタに対し前記基板が所要の組付構造となるように前記ケース化したバッテリコネクタ内に前記基板を挿入し、当該ケース化したバッテリコネクタ内に滴下されて固化したポッティング材により前記バッテリコネクタに対し前記基板を一体化した充電電動工具を提供する。   The present invention has been proposed to achieve the above object, and the invention according to claim 1 includes a battery housed in a battery pack and a required electronic device including a motor that operates with electric power from the battery. A charging electric tool in which a board on which required electronic components including components of a control circuit for controlling the motor are electrically connected is disposed in the vicinity of the battery connector, and the battery connector is disposed. A side plate portion is erected on the four sides of the battery connector to make the battery connector into a case, and the board is inserted into the case-attached battery connector so that the board has a required assembly structure with respect to the battery connector. Electric power tool in which the board is integrated with the battery connector by a potting material that has been dropped into the battery connector and solidified To provide.

この構成によれば、バッテリコネクタに対する基板の組付け時に、ケース化したバッテリコネクタ内に基板を挿入し、ポッティング処理を施すのみでバッテリコネクタに対し基板が所要の組付構造で一体化されるとともに基板上に実装した所要の電子部品等がポッティング材であるエポキシ系、シリコーン系等の熱硬化性樹脂でコーティングされる。   According to this configuration, when the board is assembled to the battery connector, the board is integrated into the battery connector with the required assembly structure by simply inserting the board into the cased battery connector and performing a potting process. Necessary electronic components mounted on the substrate are coated with a thermosetting resin such as epoxy or silicone as a potting material.

請求項1記載の発明は、バッテリコネクタに対する基板の組付け時に、ポッティング処理を施すのみで、ねじ止め工程等を必要とすることなく、バッテリコネクタに対し基板が効率的に一体化されて生産性及び工具本体への基板の組付性の向上と共に所要部分が熱硬化性樹脂でコーティングされることで防塵、防湿等の耐環境性が向上し、さらには部品点数を削減することができるという利点がある。   According to the first aspect of the present invention, only the potting process is performed at the time of assembling the board to the battery connector, and the board is efficiently integrated with the battery connector without requiring a screwing process. As well as improving the assembly of the board to the tool body, the required parts are coated with thermosetting resin, so that the environmental resistance such as dustproof and moistureproof is improved, and the number of parts can be reduced. There is.

図は本発明の実施例に係る充電電動工具を示すものである。
基板が組込まれている部分の内部構成を示す部分縦断面図。 基板とケース化したバッテリコネクタ部分を示す斜視図。 ケース化したバッテリコネクタ内に基板を挿入して一体化した状態を示す斜視図。
The figure shows a charging power tool according to an embodiment of the present invention.
The fragmentary longitudinal cross-section which shows the internal structure of the part in which the board | substrate is integrated. The perspective view which shows the battery connector part which carried out the board | substrate and the case. The perspective view which shows the state which inserted the board | substrate in the battery connector made into the case and integrated.

本発明は、バッテリコネクタに基板を効率的に一体化して生産性、組付性と共に耐環境性を向上させ、さらには部品点数の削減や工具本体をコンパクトに設計するという目的を達成するために、バッテリパックに収納されたバッテリと該バッテリからの電力で動作するモータを含む所要の電子機器とがバッテリコネクタで電気的に結合され、該バッテリコネクタの近傍に前記モータを制御する制御回路の構成素子を含む所要の電子部品を実装した基板が配置されている充電電動工具であって、前記バッテリコネクタの四囲に側板部を立設して該バッテリコネクタをケース化し、該バッテリコネクタに対し前記基板が所要の組付構造となるように前記ケース化したバッテリコネクタ内に前記基板を挿入し、当該ケース化したバッテリコネクタ内に滴下されて固化したポッティング材により前記バッテリコネクタに対し前記基板を一体化することにより実現した。   The present invention achieves the objectives of efficiently integrating the board into the battery connector to improve productivity and assembly performance as well as environmental resistance, and further reducing the number of parts and designing the tool body compactly. Configuration of a control circuit for electrically connecting a battery housed in a battery pack and a required electronic device including a motor that operates with electric power from the battery through a battery connector and controlling the motor in the vicinity of the battery connector A charging power tool in which a board on which required electronic components including an element are mounted is arranged, wherein a side plate portion is erected on the four sides of the battery connector to form the battery connector, and the board with respect to the battery connector Is inserted into the case battery connector so that the required assembly structure is obtained. Was achieved by integrating the substrate with respect to the battery connector by potting material solidified been dropped.

以下、本発明の好適な実施例を図1乃至図3を参照して説明する。本実施例の充電電動工具は充電インパクトドライバに適用されている。まず、本実施例に係る充電電動工具の構成を説明する。図1に示すように、充電電動工具は、ハウジングにおける図示しないシリンダ状部に、回転源であるモータと、該モータの回転を減速伝達する駆動部と、該駆動部で設定された回転出力を出力する出力軸の一部とが内装されている。前記シリンダ状部から下方に延びるグリップ部1aの下端にバッテリパック取付部1bが形成され、該バッテリパック取付部1bに図示しないバッテリパックが着脱自在に設けられている。   A preferred embodiment of the present invention will be described below with reference to FIGS. The charging power tool of this embodiment is applied to a charging impact driver. First, the configuration of the charging power tool according to the present embodiment will be described. As shown in FIG. 1, the charging power tool has a motor that is a rotation source, a drive unit that transmits the rotation of the motor at a reduced speed, and a rotation output that is set by the drive unit. A part of the output shaft for output is built in. A battery pack mounting portion 1b is formed at the lower end of the grip portion 1a extending downward from the cylindrical portion, and a battery pack (not shown) is detachably provided on the battery pack mounting portion 1b.

前記バッテリパック取付部1bの部分には、当該充電電動工具の動作モードを切替操作する操作部を備えた操作パネル2と、前記操作部で設定された操作信号を基に前記モータを制御する図示しない制御回路の構成素子を含む所要の電子部品を実装したプリント基板3とが組込まれている。該プリント基板3上の制御回路等からは、前記モータ等に向けて所要の信号線4が立ち上げられている。   The battery pack mounting portion 1b includes an operation panel 2 having an operation unit for switching the operation mode of the charging electric tool, and the motor is controlled based on an operation signal set by the operation unit. And a printed circuit board 3 on which required electronic components including components of the control circuit that are not mounted are mounted. From the control circuit on the printed circuit board 3 or the like, a required signal line 4 is set up toward the motor or the like.

そして、前記バッテリパックに収納された図示しないバッテリと、該バッテリからの電力で動作する前記モータ及び前記制御回路を含む所要の電子機器とを電気的に結合するためのバッテリコネクタ5がバッテリパック取付部1b側に設けられている。前記プリント基板3は、該バッテリコネクタ5上に一体的に取付けられている。   A battery connector 5 for electrically connecting a battery (not shown) housed in the battery pack and a required electronic device including the motor and the control circuit operating with electric power from the battery is attached to the battery pack. It is provided on the part 1b side. The printed circuit board 3 is integrally mounted on the battery connector 5.

図2に示すように、該バッテリコネクタ5の四囲には側板部6が立設され、該バッテリコネクタ5は、その上部にプリント基板3を一体的に取付けるため、低高のケース状化されている。そして、プリント基板3に実装された制御回路等とバッテリコネクタ5間で所要の配線接続が行われた上で、ケース化されたバッテリコネクタ5内にプリント基板3が所要の組付構造となるように挿入され、ポッティング処理によりケース化されたバッテリコネクタ5内に図示しないポッティング材が滴下されて固化し、プリント基板3は、バッテリコネクタ5上に所要の組付構造で一体化されている。図3は、ケース化されたバッテリコネクタ5に対し、プリント基板3が所要の組付構造で一体化された状態を示している。   As shown in FIG. 2, a side plate portion 6 is erected on the four sides of the battery connector 5, and the battery connector 5 is formed in a low and high case shape so that the printed circuit board 3 is integrally attached to the upper portion thereof. Yes. Then, after necessary wiring connection is made between the control circuit or the like mounted on the printed circuit board 3 and the battery connector 5, the printed circuit board 3 has a required assembly structure in the case-formed battery connector 5. A potting material (not shown) is dropped and solidified in the battery connector 5 inserted into the case and made into a case by the potting process, and the printed circuit board 3 is integrated on the battery connector 5 with a required assembly structure. FIG. 3 shows a state in which the printed circuit board 3 is integrated with the case-attached battery connector 5 in a required assembly structure.

次に、上述のように構成された充電電動工具の作用を説明する。バッテリコネクタ5に対するプリント基板3の組付け時に、プリント基板3に実装された制御回路等とバッテリコネクタ5間で所要の配線接続を行った上で、ケース化されたバッテリコネクタ5内にプリント基板3を所要の組付構造となるように挿入し、ケース化されたバッテリコネクタ5内にポッティング材を滴下してポッティング処理を施すことでバッテリコネクタ5に対しプリント基板3が所要の組付構造で一体化される。また、これとともにプリント基板3上に実装された制御回路の構成素子を含む所要の電子部品がポッティング材であるエポキシ系、シリコーン系等の熱硬化性樹脂でコーティングされる。   Next, the operation of the charging power tool configured as described above will be described. At the time of assembling the printed circuit board 3 to the battery connector 5, a necessary wiring connection is made between the control circuit and the like mounted on the printed circuit board 3 and the battery connector 5, and then the printed circuit board 3 is placed in the case-formed battery connector 5. Is inserted so as to have a required assembly structure, and a potting material is dropped into the case-formed battery connector 5 to perform a potting process, whereby the printed circuit board 3 is integrated with the battery connector 5 with the required assembly structure. It becomes. At the same time, required electronic components including components of the control circuit mounted on the printed circuit board 3 are coated with a thermosetting resin such as epoxy or silicone as a potting material.

なお、ポッティング処理前に、ケース化されたバッテリコネクタ5内にプリント基板3を所要の組付構造となるように挿入したとき、プリント基板3は、バッテリコネクタ5にねじやスナップフィット等によって仮止めしておいてもよい。   Before the potting process, when the printed circuit board 3 is inserted into the battery connector 5 formed into a case so as to have a required assembly structure, the printed circuit board 3 is temporarily fixed to the battery connector 5 by screws, snap-fit, or the like. You may keep it.

上述したように、本実施例に係る充電電動工具においては、バッテリコネクタ5に対するプリント基板3の組付け時に、ポッティング処理を施すのみで、ねじ止め工程等を必要とすることなく、バッテリコネクタ5に対しプリント基板3が効率的に一体化されて生産性及び工具本体へのプリント基板3の組付性の向上と共にプリント基板3上に実装された所要の電子部品等がエポキシ系、シリコーン系等の熱硬化性樹脂でコーティングされることで防塵、防湿等の耐環境性が向上する。   As described above, in the charging electric tool according to the present embodiment, when the printed circuit board 3 is assembled to the battery connector 5, only the potting process is performed, and the battery connector 5 is not required without a screwing process or the like. On the other hand, the printed circuit board 3 is efficiently integrated so that productivity and assembly of the printed circuit board 3 to the tool body are improved, and the required electronic components mounted on the printed circuit board 3 are epoxy-based, silicone-based, etc. Environment resistance such as dustproof and moistureproof is improved by coating with thermosetting resin.

また、ポッティング処理によりバッテリコネクタ5に対しプリント基板3を一体化したときは、ポッティング処理以外のねじ止め等による組付けに比べて両者間に不要な空隙がなくなって、一体化組付け体の全高が低くなるという効果もある。   Further, when the printed circuit board 3 is integrated with the battery connector 5 by the potting process, unnecessary gaps are eliminated between the two as compared with the assembly by screwing or the like other than the potting process, and the total height of the integrated assembly is reduced. There is also an effect that becomes low.

なお、本発明は、本発明の精神を逸脱しない限り種々の改変をなすことができ、そして、本発明が該改変されたものにも及ぶことは当然である。   The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

バッテリコネクタに所要の電子部品を実装した基板を効率的に一体化して生産性、組付性と共に耐環境性を向上させ、さらには部品点数を削減することが不可欠な充電インパクトドライバその他の可般式電動工具に適用することが可能である。   Charging impact driver and other general devices where it is indispensable to efficiently integrate the board on which the required electronic components are mounted on the battery connector to improve productivity and assembly, as well as environmental resistance, and to reduce the number of components. It is possible to apply to an electric power tool.

1a グリップ部
1b バッテリパック取付部
2 操作パネル
3 プリント基板(基板)
4 信号線
5 バッテリコネクタ
6 側板部
DESCRIPTION OF SYMBOLS 1a Grip part 1b Battery pack attachment part 2 Operation panel 3 Printed circuit board (board | substrate)
4 Signal line 5 Battery connector 6 Side plate

Claims (1)

バッテリパックに収納されたバッテリと該バッテリからの電力で動作するモータを含む所要の電子機器とがバッテリコネクタで電気的に結合され、該バッテリコネクタの近傍に前記モータを制御する制御回路の構成素子を含む所要の電子部品を実装した基板が配置されている充電電動工具であって、
前記バッテリコネクタの四囲に側板部を立設して該バッテリコネクタをケース化し、該バッテリコネクタに対し前記基板が所要の組付構造となるように前記ケース化したバッテリコネクタ内に前記基板を挿入し、当該ケース化したバッテリコネクタ内に滴下されて固化したポッティング材により前記バッテリコネクタに対し前記基板を一体化したことを特徴とする充電電動工具。
A component of a control circuit for controlling a motor in the vicinity of the battery connector, in which a battery housed in a battery pack and a required electronic device including a motor that operates with electric power from the battery are electrically coupled by a battery connector A charging power tool on which a board on which required electronic components including
A side plate portion is erected on the four sides of the battery connector to form a case for the battery connector, and the board is inserted into the case-attached battery connector so that the board has a required assembly structure with respect to the battery connector. A charging electric tool characterized in that the substrate is integrated with the battery connector by a potting material that is dropped into the case and solidified in the battery connector.
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Publication number Priority date Publication date Assignee Title
JP2017213618A (en) * 2016-05-30 2017-12-07 マックス株式会社 tool

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JP6575793B2 (en) * 2014-11-18 2019-09-18 パナソニックIpマネジメント株式会社 Electric tool
JP6724563B2 (en) * 2016-05-30 2020-07-15 マックス株式会社 tool

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JP4662530B2 (en) * 2004-01-20 2011-03-30 パナソニック株式会社 Battery pack
JP4981345B2 (en) * 2006-04-18 2012-07-18 株式会社マキタ Electric tool
JP5086835B2 (en) * 2008-02-20 2012-11-28 パナソニック株式会社 Electric tool
JP5248151B2 (en) * 2008-03-12 2013-07-31 株式会社マキタ Electric tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017213618A (en) * 2016-05-30 2017-12-07 マックス株式会社 tool

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