JP5698546B2 - Rechargeable power tool - Google Patents

Rechargeable power tool Download PDF

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JP5698546B2
JP5698546B2 JP2011010039A JP2011010039A JP5698546B2 JP 5698546 B2 JP5698546 B2 JP 5698546B2 JP 2011010039 A JP2011010039 A JP 2011010039A JP 2011010039 A JP2011010039 A JP 2011010039A JP 5698546 B2 JP5698546 B2 JP 5698546B2
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circuit board
root
mounting portion
case
tag
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JP2012148381A (en
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長坂　英紀
英紀 長坂
竜之助 熊谷
竜之助 熊谷
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Makita Corp
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Makita Corp
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Description

この発明は、バッテリーパックを着脱自在に装着する装着部と、前記装着部から上向きに突出するハンドル部とを備え、前記装着部の内側空間に電気回路基板を配置した充電式電動工具に関する。   The present invention relates to a rechargeable electric tool including a mounting portion for detachably mounting a battery pack and a handle portion protruding upward from the mounting portion, and an electric circuit board disposed in an inner space of the mounting portion.

例えば特許文献１には、モータ等を収容したハウジング本体部の下部から筒状のハンドル部を突出させて、ハンドル部の下端部にバッテリーパックが連結される連結部を形成したインパクトドライバが開示されている。このインパクトドライバでは、バッテリーパックの電源端子が接続されるターミナルを備えたターミナル支持板が、連結部の内側に固定された上で、モータの電気回路基板を収容するケースが、ターミナル支持板の上側に重ねられた状態で取り付けられている。   For example, Patent Document 1 discloses an impact driver in which a cylindrical handle portion is protruded from a lower portion of a housing main body housing a motor or the like, and a connecting portion to which a battery pack is connected is formed at the lower end portion of the handle portion. ing. In this impact driver, the terminal support plate having a terminal to which the power supply terminal of the battery pack is connected is fixed inside the connecting portion, and the case for accommodating the electric circuit board of the motor is located above the terminal support plate. It is attached in a state where it is stacked on.

特開２０１０−３００２４号公報JP 2010-30024 JP

ところで、上記のインパクトドライバ等の充電式電動工具を誤って落下させたことに伴ってハンドル部に衝撃力が加わると、ハンドル部の根元部分が連結部の内側に入り込んで電気回路基板に衝突するおそれがあった。仮に前記根元部分が電気回路基板に衝突すると、電気回路基板が衝撃力で損傷することが懸念される。   By the way, when an impact force is applied to the handle portion due to the accidental dropping of the rechargeable electric tool such as the impact driver, the base portion of the handle portion enters the inside of the connecting portion and collides with the electric circuit board. There was a fear. If the root portion collides with the electric circuit board, there is a concern that the electric circuit board may be damaged by an impact force.

この発明は、このような状況に鑑み提案されたものであって、ハンドル部に衝撃力が加わった場合でも、電気回路基板が損傷することを防止可能な充電式電動工具を提供することを目的とする。   The present invention has been proposed in view of such a situation, and an object of the present invention is to provide a rechargeable electric tool capable of preventing an electric circuit board from being damaged even when an impact force is applied to the handle portion. And

請求項１の発明に係る充電式電動工具は、バッテリーパックを着脱自在に装着する装着部と、前記装着部から上向きに突出するハンドル部とを備え、前記装着部の内側空間であって前記ハンドル部の根元部分の近傍に、制御回路を搭載した電気回路基板を配置した充電式電動工具であって、前記装着部と前記ハンドル部とが一体にされたハウジングは、２つの分割ハウジングを組み付けてなり、前記内側空間で、前記２つの分割ハウジングの合わせ面に沿った前記根元部分の真下位置に、該根元部分の下端を受け止める受け部を、前記電気回路基板を保持するケースの上面に形成された窪み部の底面から前記根元部分側へ突出させて、前記窪み部の内壁面と一体に設けたことを特徴とする。 A rechargeable electric tool according to a first aspect of the present invention includes a mounting portion for detachably mounting a battery pack, and a handle portion that protrudes upward from the mounting portion. A rechargeable electric tool in which an electric circuit board on which a control circuit is mounted is disposed in the vicinity of the base part of the unit, wherein the housing in which the mounting part and the handle part are integrated is formed by assembling two divided housings. In the inner space, a receiving portion for receiving the lower end of the root portion is formed on the upper surface of the case holding the electric circuit board at a position directly below the root portion along the mating surface of the two divided housings. It protrudes from the bottom surface of the hollow part to the root part side, and is provided integrally with the inner wall surface of the hollow part .

請求項２の発明は、請求項１において、当該充電式電動工具に固有の識別情報を書き込んだＩＣタグを備え、前記ケースの裏面に、前記ＩＣタグを取り付け可能な取付部を設けたことを特徴とする。 Invention of Claim 2 provided with the IC tag which wrote the identification information intrinsic | native to the said rechargeable electric tool in Claim 1 , and provided the attachment part which can attach the said IC tag to the back surface of the said case. Features.

請求項１の発明に係る充電式電動工具によれば、ハンドル部に衝撃力が加わったことでハンドル部の根元部分が装着部の内側空間へ入り込もうとする場合でも、受け部が前記根元部分の下端を受け止めて、根元部分が電気回路基板に対して直接衝撃力を加えることを防止できる。よって、電気回路基板の損傷を効果的に防止できる。
特に、ハウジングに衝撃力が加わって分割ハウジングが変位することで分割ハウジング同士の合わせ面がずれようとする場合でも、受け部が前記根元部分の下端を受け止めて合わせ面のずれを抑制できる。
請求項２の発明によれば、ＩＣタグを予め取付部に取り付けた状態で前記ケースを装着部の内側空間に組み付けることで、これと同時にＩＣタグを内側空間に組み付けることができる。したがって、充電式電動工具に対するＩＣタグの組み付け作業が容易になる。
According to the rechargeable power tool of the first aspect of the present invention, even when the base portion of the handle portion tries to enter the inner space of the mounting portion due to the impact force applied to the handle portion, the receiving portion is By receiving the lower end, it is possible to prevent the base portion from directly applying an impact force to the electric circuit board. Therefore, damage to the electric circuit board can be effectively prevented.
In particular , even when an impact force is applied to the housing and the divided housings are displaced so that the mating surfaces of the divided housings are displaced, the receiving portion can receive the lower end of the root portion and suppress the displacement of the mating surfaces.
According to the invention of claim 2 , the IC tag can be assembled in the inner space at the same time by assembling the case in the inner space of the mounting portion with the IC tag attached in advance to the mounting portion. Therefore, the assembling work of the IC tag to the rechargeable electric tool becomes easy.

本発明の実施形態におけるバッテリーパックを装着したインパクトドライバのバッテリー装着部付近の内部構造を示す斜視図である。It is a perspective view which shows the internal structure of the battery mounting part vicinity of the impact driver which mounted | wore the battery pack in embodiment of this invention. 同内部構造を示したバッテリー装着部付近の側面図である。It is a side view of the battery mounting part vicinity which showed the internal structure. 図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 同バッテリー装着部の内側空間にＩＣタグを組み付けた状態を示した図である。It is the figure which showed the state which assembled | attached the IC tag in the inner space of the battery mounting part.

本発明の実施形態を図１ないし図４を参照しつつ説明する。本実施形態のインパクトドライバ１は、バッテリー装着部１０と、ハンドル部２０と、電気回路基板３０と、操作部４０とを備えている。バッテリー装着部１０とハンドル部２０とは、バッテリー装着部１０の左側部分及びハンドル部２０の左側部分を有する樹脂製の左半割ハウジング５０Ｌと、バッテリー装着部１０の右側部分及びハンドル部２０の右側部分を有する右半割ハウジング５０Ｒとを組み付けることで一体に形成されている。なお、インパクトドライバ１は本発明の充電式電動工具の一例であり、左右の半割ハウジング５０Ｌ、５０Ｒは本発明の２つの分割ハウジングの一例である。   An embodiment of the present invention will be described with reference to FIGS. The impact driver 1 of the present embodiment includes a battery mounting part 10, a handle part 20, an electric circuit board 30, and an operation part 40. The battery mounting portion 10 and the handle portion 20 are a resin left half housing 50L having a left side portion of the battery mounting portion 10 and a left side portion of the handle portion 20, a right side portion of the battery mounting portion 10 and a right side of the handle portion 20. The right half housing 50R having a portion is integrally formed by assembling. The impact driver 1 is an example of a rechargeable electric tool of the present invention, and the left and right half housings 50L and 50R are examples of two divided housings of the present invention.

バッテリー装着部１０には、略直方体形状のバッテリーパックＢが着脱自在に装着される。バッテリー装着部１０の正面視左側面には、インパクトドライバ１を作業者のベルトに吊り下げるフックＦ（図３及び図４参照。）が螺着されている。ハンドル部２０は、バッテリー装着部１０の上面から上向きに突出するように形成されている。ハンドル部２０の上端には、モータやモータの回転を回転打撃力に変換して先端工具に伝達する打撃機構等を収容した胴体部（図示せず。）が連設されている。なお、バッテリー装着部１０は本発明の装着部の一例である。   A battery pack B having a substantially rectangular parallelepiped shape is detachably mounted on the battery mounting portion 10. A hook F (see FIGS. 3 and 4) that suspends the impact driver 1 from the operator's belt is screwed to the left side surface of the battery mounting portion 10 when viewed from the front. The handle portion 20 is formed so as to protrude upward from the upper surface of the battery mounting portion 10. At the upper end of the handle portion 20, a body portion (not shown) that houses a motor and a striking mechanism that converts rotation of the motor into rotational striking force and transmits it to the tip tool is connected. The battery mounting part 10 is an example of the mounting part of the present invention.

図２に示すように、電気回路基板３０は、バッテリー装着部１０の内側空間１１においてハンドル部２０の根元部分２２の近傍に配置されている。この根元部分２２は、ハンドル部２０とバッテリー装着部１０との境界付近に当たる位置を意味する。電気回路基板３０は樹脂でモールドされてケース３１内に保持されている。図２及び図４に示すように、左半割ハウジング５０Ｌの内面と一体にされたリブ５１と右半割ハウジング５０Ｒの内面と一体にされたリブ５２とが、ケース３１の下面を支持することで、ケース３１は内側空間１１に組み付けられる。   As shown in FIG. 2, the electric circuit board 30 is disposed in the vicinity of the root portion 22 of the handle portion 20 in the inner space 11 of the battery mounting portion 10. The root portion 22 means a position corresponding to the vicinity of the boundary between the handle portion 20 and the battery mounting portion 10. The electric circuit board 30 is molded with resin and held in the case 31. 2 and 4, the rib 51 integrated with the inner surface of the left half housing 50L and the rib 52 integrated with the inner surface of the right half housing 50R support the lower surface of the case 31. Thus, the case 31 is assembled in the inner space 11.

図１に示すように、ケース３１の上面には矩形状の窪み部３４が形成されて、窪み部３４の底面から突出する樹脂製の受け部３５が、窪み部３４の後側内壁面と一体に形成されている。図３に示すように、受け部３５は、内側空間１１において左半割ハウジング５０Ｌと右半割ハウジング５０Ｒとの合わせ面２３に沿った根元部分２２の真下位置に設けられて、バッテリー装着部１０の下面に対して僅かな空間を残して近接している。一方図３及び図４に示すように、ケース３１の裏面には、矩形状の凹部３７が形成されている。この凹部３７は、ＩＣタグ３８を収容して取り付け可能とする。ケース３１を内側空間１１に組み付ける前に、ＩＣタグ３８は予め凹部３７に取り付けられる。このＩＣタグ３８は、ＩＣチップとコイル状のアンテナとを備え、ＩＣチップはメモリや制御部を備えている。ＩＣチップに固有のＩＤ等はＩＣチップのメモリに記憶されている。制御部は、前記アンテナを介してＩＣタグリーダ／ライタから受信したコマンドに基づいて、メモリに記憶された情報の送信やメモリに記憶する情報の受信を制御する。なお、凹部３７は本発明の取付部の一例であり、ＩＣチップに固有のＩＤは、本発明の充電式電動工具に固有の識別情報の一例である。   As shown in FIG. 1, a rectangular recess 34 is formed on the upper surface of the case 31, and a resin receiving portion 35 protruding from the bottom surface of the recess 34 is integrated with the rear inner wall surface of the recess 34. Is formed. As shown in FIG. 3, the receiving portion 35 is provided in the inner space 11 at a position directly below the root portion 22 along the mating surface 23 of the left half housing 50L and the right half housing 50R. It is close to the lower surface, leaving a slight space. On the other hand, as shown in FIGS. 3 and 4, a rectangular recess 37 is formed on the back surface of the case 31. The recess 37 accommodates the IC tag 38 and can be attached thereto. Before assembling the case 31 in the inner space 11, the IC tag 38 is attached to the recess 37 in advance. The IC tag 38 includes an IC chip and a coiled antenna, and the IC chip includes a memory and a control unit. An ID unique to the IC chip is stored in the memory of the IC chip. The control unit controls transmission of information stored in the memory and reception of information stored in the memory based on a command received from the IC tag reader / writer via the antenna. In addition, the recessed part 37 is an example of the attachment part of this invention, and ID intrinsic | native to an IC chip is an example of the identification information intrinsic | native to the rechargeable electric tool of this invention.

また、図１及び図２に示すように、バッテリー装着部１０の上面には、ケース３１が配置された位置の真上位置において根元部分２２に到達して開口する開口部１５が形成されている。操作部４０は開口部１５に装着されている。操作部４０は、上面に各種の操作ボタンや表示ランプが配置された操作パネルによって構成されている。本実施形態では、回転打撃力の強度を切り替える打撃力切替ボタン、回転打撃力の強度を示す強度表示ランプ、バッテーパックＢの電池残量を表示する電池残量表示ランプが、操作パネルの上面に配置されている。打撃力切替ボタンが押されると電気回路基板３０に搭載された制御回路が働いて、回転打撃力の強度を設定すると共に設定された回転打撃力の強度（強、中、弱）は強度表示ランプに表示される。   As shown in FIGS. 1 and 2, an opening 15 is formed on the upper surface of the battery mounting portion 10 so as to reach and open the root portion 22 at a position directly above the position where the case 31 is disposed. . The operation unit 40 is attached to the opening 15. The operation unit 40 is configured by an operation panel having various operation buttons and display lamps arranged on the upper surface. In the present embodiment, a striking force switching button for switching the strength of the rotating striking force, a strength display lamp for indicating the strength of the rotating striking force, and a battery remaining amount displaying lamp for displaying the battery remaining amount of the battery pack B are arranged on the upper surface of the operation panel. Has been. When the striking force switching button is pressed, the control circuit mounted on the electric circuit board 30 is activated to set the strength of the rotating striking force and the strength (high, medium, weak) of the set rotating striking force is an intensity indicator lamp. Is displayed.

本実施形態では、例えばインパクトドライバ１を誤って落下させたことによりハンドル部２０に衝撃力が加わっても、電気回路基板３０の損傷を防止するために受け部３５がハンドル部２２の根元部分２２の下端を受け止めることを可能にした。以下に、受け部３５が根元部分２２の下端を受け止める動作を説明する。   In the present embodiment, for example, even if an impact force is applied to the handle portion 20 due to the impact driver 1 being accidentally dropped, the receiving portion 35 is connected to the root portion 22 of the handle portion 22 in order to prevent the electric circuit board 30 from being damaged. It became possible to catch the lower end of. Hereinafter, an operation in which the receiving portion 35 receives the lower end of the root portion 22 will be described.

バッテリー装着部１０には根元部分２２の機械的強度を低下させる開口部１５が設けられていることから、ハンドル部２０に衝撃力が加わると根元部分２２がバッテリー装着部１０の内側空間１１に入り込もうとすることが考えられる。このような場合でも、根元部分２２の真下位置に設けられた受け部３５は、根元部分２２の下端を受け止める。これにより、受け部３５は根元部分２２から受ける衝撃力を吸収して緩和する。これに加えて、受け部３５が一体にされたケース３１も当該衝撃力を吸収して緩和できる。   Since the opening 15 for reducing the mechanical strength of the base portion 22 is provided in the battery mounting portion 10, the base portion 22 may enter the inner space 11 of the battery mounting portion 10 when an impact force is applied to the handle portion 20. It is possible to try. Even in such a case, the receiving portion 35 provided immediately below the root portion 22 receives the lower end of the root portion 22. As a result, the receiving portion 35 absorbs and relaxes the impact force received from the root portion 22. In addition to this, the case 31 in which the receiving portion 35 is integrated can also absorb the impact force and relax.

また、例えば左半割ハウジング５０Ｌ又は右半割ハウジング５０Ｒのいずれかが偶発的に衝撃力を受けて変位することで、合わせ面２３がずれようとすることも考えられる。このような場合でも、合わせ面２３に沿った根元部分２２の真下位置に設けられた受け部３５は、ハンドル部２０の左側部分の根元部分２２の下端やハンドル部２０の右側部分の根元部分２２の下端を受け止めることができる。よって、受け部３５は、各根元部分２２から受ける衝撃力を吸収して緩和できる。   Further, for example, it is conceivable that either the left half housing 50L or the right half housing 50R is accidentally displaced by receiving an impact force and the mating surface 23 tends to be displaced. Even in such a case, the receiving portion 35 provided immediately below the root portion 22 along the mating surface 23 is the lower end of the left portion of the handle portion 20 and the root portion 22 of the right portion of the handle portion 20. You can catch the bottom of the. Therefore, the receiving part 35 can absorb and relieve the impact force received from each root part 22.

＜本実施形態の効果＞
本実施形態のインパクトドライバ１では、ハンドル部２０に衝撃力が加わったことで根元部分２２が内側空間１１に入り込もうとする場合でも、受け部３５が根元部分２２の下端を受け止めて、根元部分２２が電気回路基板３０に対して直接衝撃力を加えることを防止できる。よって、電気回路基板３０の損傷を効果的に防止できる。 <Effect of this embodiment>
In the impact driver 1 of the present embodiment, even when the root portion 22 tries to enter the inner space 11 due to an impact force applied to the handle portion 20, the receiving portion 35 receives the lower end of the root portion 22, and the root portion 22. Can be prevented from directly applying an impact force to the electric circuit board 30. Therefore, damage to the electric circuit board 30 can be effectively prevented.

また、左半割ハウジング５０Ｌ又は右半割ハウジング５０Ｒのいずれかが衝撃力を受けて変位することで、合わせ面２３がずれようとする場合でも、受け部３５が、ハンドル部２０の左側部分の根元部分２２の下端やハンドル部２０の右側部分の根元部分２２の下端を受け止めて合わせ面２３のずれを抑制できる。   Further, even when either the left half housing 50L or the right half housing 50R is displaced by receiving an impact force and is displaced, the receiving portion 35 is disposed on the left side portion of the handle portion 20. The shift of the mating surface 23 can be suppressed by receiving the lower end of the root portion 22 and the lower end of the root portion 22 of the right side portion of the handle portion 20.

さらに、ＩＣタグ３８を予め凹部３７に取り付けた状態でケース３１を内側空間１１に組み付けることで、これと同時にＩＣタグ３８を内側空間１１に組み付けることができる。したがって、インパクトドライバ１に対するＩＣタグ３８の組み付け作業が容易になる。   Furthermore, the IC tag 38 can be assembled into the inner space 11 at the same time by assembling the case 31 in the inner space 11 with the IC tag 38 attached to the recess 37 in advance. Therefore, the assembly work of the IC tag 38 to the impact driver 1 is facilitated.

本発明は、上述した実施形態に限定されるものではなく、発明の趣旨を逸脱しない範囲内において構成の一部を適宜変更して実施できる。上述した実施形態では受け部３５をケース３１と一体に形成したが、これに限らず、受け部３５は、ケース３１とは別体として形成した後にケース３１に接着等して合わせ面２３に沿った根元部分２２の真下位置に配置するものでもよい。   The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention. In the embodiment described above, the receiving portion 35 is formed integrally with the case 31. However, the present invention is not limited thereto, and the receiving portion 35 is formed as a separate body from the case 31 and then adhered to the case 31 along the mating surface 23. It may be arranged at a position directly below the root portion 22.

また、受け部３５は樹脂製のものに限らず合成ゴム等の弾性部材で形成したものであってもよい。さらに、インパクトドライバに限らず、充電式のドライバドリル等の電動工具に本発明を適用してもよい。   Further, the receiving portion 35 is not limited to a resin one but may be formed of an elastic member such as synthetic rubber. Furthermore, you may apply this invention not only to an impact driver but to electric tools, such as a rechargeable driver drill.

１・・インパクトドライバ、１０・・バッテリー装着部、１１・・バッテリー装着部の内側空間、２０・・ハンドル部、２２・・ハンドル部の根元部分、２３・・左半割ハウジングと右半割ハウジングとの合わせ面、３０・・電気回路基板、３１・・ケース、３５・・受け部、３７・・凹部、３８・・ＩＣタグ、５０Ｌ・・左半割ハウジング、５０Ｒ・・右半割ハウジング、Ｂ・・バッテリーパック。   1..Impact driver, 10..Battery mounting part, 11..Inner space of battery mounting part, 20..Handle part, 22..Base part of handle part, 23..Left half housing and right half housing 30..Electric circuit board, 31..Case, 35..Receiving part, 37..Recessed part, 38..IC tag, 50L..Left half housing, 50R..Right half housing, B. Battery pack.

Claims (2)

バッテリーパックを着脱自在に装着する装着部と、前記装着部から上向きに突出するハンドル部とを備え、前記装着部の内側空間であって前記ハンドル部の根元部分の近傍に、制御回路を搭載した電気回路基板を配置した充電式電動工具であって、
前記装着部と前記ハンドル部とが一体にされたハウジングは、２つの分割ハウジングを組み付けてなり、
前記内側空間で、前記２つの分割ハウジングの合わせ面に沿った前記根元部分の真下位置に、該根元部分の下端を受け止める受け部を、前記電気回路基板を保持するケースの上面に形成された窪み部の底面から前記根元部分側へ突出させて、前記窪み部の内壁面と一体に設けたことを特徴とする充電式電動工具。 A mounting portion for detachably mounting the battery pack and a handle portion protruding upward from the mounting portion, and a control circuit is mounted in an inner space of the mounting portion and in the vicinity of the root portion of the handle portion A rechargeable electric tool with an electric circuit board,
The housing in which the mounting portion and the handle portion are integrated is formed by assembling two divided housings,
In the inner space, a recess formed on the upper surface of the case for holding the electric circuit board has a receiving portion for receiving the lower end of the root portion at a position directly below the root portion along the mating surface of the two divided housings. A rechargeable electric tool characterized in that it protrudes from the bottom surface of the portion toward the root portion and is provided integrally with the inner wall surface of the recess . 当該充電式電動工具に固有の識別情報を書き込んだＩＣタグを備え、
前記ケースの裏面に、前記ＩＣタグを取り付け可能な取付部を設けたことを特徴とする請求項１に記載の充電式電動工具。 Provided with an IC tag in which identification information unique to the rechargeable electric tool is written,
Rechargeable power tool according to claim 1, characterized in that the rear surface of the case, is provided a mounting portion that is attachable to the IC tag.
JP2011010039A 2011-01-20 2011-01-20 Rechargeable power tool Active JP5698546B2 (en)

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