JP2009028840A - Portable power tool - Google Patents

Portable power tool Download PDF

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Publication number
JP2009028840A
JP2009028840A JP2007194912A JP2007194912A JP2009028840A JP 2009028840 A JP2009028840 A JP 2009028840A JP 2007194912 A JP2007194912 A JP 2007194912A JP 2007194912 A JP2007194912 A JP 2007194912A JP 2009028840 A JP2009028840 A JP 2009028840A
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housing
protector
tool according
portable
portable electric
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Japanese (ja)
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Minoru Yamada
穣 山田
Kenichiro Inagaki
賢一郎 稲垣
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Priority to JP2007194912A priority Critical patent/JP2009028840A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02Construction of casings, bodies or handles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To improve adhesion between protectors and a housing without increasing machining cost, metal mold cost and material cost. <P>SOLUTION: A locking portion 16 projecting in the wall thickness direction of the housing 6 is formed at each of the longitudinal ends 16 of the protectors 15a, 15b and 15c. By such a structure, the protectors 15a, 15b and 15c are jointed in a wedge driving manner to the housing 6 in a longitudinal end area. Therefore, even if a molding temperature is low, the adhesion between the protectors 15a, 15b and 16c and the housing 6 is improved, and the protectors 15a, 15b and 15c can be suppressed from being separated from the surface of the housing 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電動ドライバ等の可搬式電動工具に関する。   The present invention relates to a portable electric tool such as an electric screwdriver.

従来の電動工具としては、ドリルドライバ,インパクトドライバ,オイルパルスドライバ等、その用途に応じた各種電動ドライバがあり、その中にはバッテリ駆動される可搬式のものも含まれている。可搬式電動工具として、電動モータを含めた駆動機構部を内包する胴体部と、電動モータへの電力供給を制御するスイッチ部を内包し、胴体部の長手方向中間部又は端部から略直角方向に突出するグリップ部とを備えて全体的に略T字状又は略L字状に構成され、グリップ部を握持して操作するように構成されるものがある。この可搬式電動工具では、電動モータを駆動するための電池パックがグリップ部の突出方向先端部に着脱自在に装着される。   Conventional electric tools include various types of electric drivers such as a drill driver, an impact driver, an oil pulse driver, and the like according to the application, and include a battery-driven portable type. As a portable electric tool, a body part including a drive mechanism part including an electric motor and a switch part for controlling power supply to the electric motor are included, and a substantially right-angle direction from a longitudinal intermediate part or an end part of the body part And a grip portion that protrudes into an overall shape, and is configured to be generally T-shaped or substantially L-shaped, and is configured to grip and operate the grip portion. In this portable electric tool, a battery pack for driving the electric motor is detachably attached to the front end portion in the protruding direction of the grip portion.

この種の可搬式電動工具のハウジングは、一般に、断面アーチ状の勝手違いの二つの樹脂製の分割体の対応する端縁同士を突き合わせて楕円状又は長円状の断面を有する筒体として形成されており、その筒体内に駆動機構やスイッチ類等が装備されている。また二つの分割体の境界線上を含むハウジング表面には、工具が落下又は衝突することによって対象部材(例えばフローリング床や壁等)を傷つけることを防止すると同時に落下時又は衝突時の衝撃から工具自体を保護するために、弾性体からなるプロテクタが形成されている。
特開2002−254340号公報 特開2005−199406号公報 特開2005−254377号公報 特許第3716751号公報
The housing of this type of portable electric tool is generally formed as a cylinder having an elliptical or oval cross section by abutting the corresponding edges of two resin-made divided bodies having an arcuate cross section. The cylinder is equipped with a drive mechanism, switches, and the like. The housing surface including the boundary line between the two divided bodies prevents the tool from being damaged by dropping or colliding with the tool, and at the same time the tool itself from the impact at the time of dropping or colliding. In order to protect, the protector which consists of an elastic body is formed.
JP 2002-254340 A JP 2005-199406 A JP 2005-254377 A Japanese Patent No. 3716751

従来の可搬式電動工具によれば、ハウジングとプロテクタがそれぞれ樹脂及び弾性体により形成されているために、ハウジングとプロテクタ間の密着性が悪く、工具を使用しているとハウジング表面からプロテクタが剥離することによって上述の機能が発現しなくなる恐れがあった。このような問題を解決するために、成形温度を高くすることによりハウジングとプロテクタ間の化学的な密着作用を促進させる方法が考えられるが、成形温度を高くした場合、製品を冷却し金型から取り出すまでの時間が長くなる。また通常の成形工程では、弾性体を流入させるゲート位置はプロテクタの被覆領域中央に設定され、プロテクタ端部は弾性体の流動の最終点となるために、プロテクタ端部の成形温度は低くなる。従って、プロテクタ端部の成形温度を高くするためにはゲート数を増やす必要が生じ、結果として加工費,金型費,及び材料費が増加する。   According to the conventional portable power tool, since the housing and the protector are formed of the resin and the elastic body, respectively, the adhesion between the housing and the protector is poor, and when the tool is used, the protector is peeled off from the surface of the housing. As a result, the above-described functions may not be expressed. In order to solve such problems, a method of promoting the chemical adhesion between the housing and the protector by increasing the molding temperature can be considered, but when the molding temperature is increased, the product is cooled and removed from the mold. The time to take out becomes longer. Further, in a normal molding process, the gate position for allowing the elastic body to flow is set at the center of the covering region of the protector, and the end of the protector is the final point of the flow of the elastic body, so the molding temperature of the protector end is low. Therefore, it is necessary to increase the number of gates in order to increase the molding temperature of the protector end, resulting in increased processing costs, mold costs, and material costs.

本発明は、上記課題を解決するためになされたものであり、その目的は、加工費,金型費,及び材料費を増加させることなくプロテクタとハウジングの密着性を向上可能な可搬式電動工具を提供することにある。   The present invention has been made to solve the above-mentioned problems, and its purpose is a portable electric tool capable of improving the adhesion between the protector and the housing without increasing the processing cost, mold cost, and material cost. Is to provide.

本発明の請求項1に係る可搬式電動工具は、駆動源である電動モータ,電動モータの回転動力を伝達する減速機構部,減速機構部の回転動力を先端工具に伝達する駆動部,及び駆動部を回転自在に保持する軸受部を内包する胴体部外郭と電動モータへの電力供給を制御するスイッチ部を内包するグリップ部外郭とを有するハウジングを備え、ハウジングが二つの分割体の周方向端縁同士を付き合わせて略筒状に形成されていると共にグリップ部外郭の長手方向先端部に電池パック取付部が形成された可搬式電動工具において、二つの分割体の境界線上を含むハウジング表面を覆う弾性体からなるプロテクタを備え、プロテクタの長手方向端部にはハウジングの肉厚方向に突出する係止部が形成されていることを特徴とする。   A portable electric tool according to a first aspect of the present invention includes an electric motor as a drive source, a speed reduction mechanism portion that transmits the rotational power of the electric motor, a drive portion that transmits the rotational power of the speed reduction mechanism portion to the tip tool, and a drive A housing having a body outer shell including a bearing portion that rotatably holds the portion and a grip outer shell including a switch unit that controls power supply to the electric motor, the housing being a circumferential end of the two divided bodies In a portable electric tool that is formed in a substantially cylindrical shape with edges attached to each other and a battery pack mounting portion is formed at the longitudinal tip of the grip portion outer shell, the housing surface including the boundary line between the two divided bodies A protector made of an elastic body is provided, and a locking portion that protrudes in the thickness direction of the housing is formed at the longitudinal end of the protector.

本発明の請求項2に係る可搬式電動工具は、請求項1に係る可搬式電動工具において、係止部の先端部は長手方向側面部が傾斜した略台形形状を有することを特徴とする。   A portable electric tool according to a second aspect of the present invention is characterized in that, in the portable electric tool according to the first aspect, the distal end portion of the locking portion has a substantially trapezoidal shape in which the side surface portion in the longitudinal direction is inclined.

本発明の請求項3に係る可搬式電動工具は、請求項2に係る可搬式電動工具において、長手方向側面部がハウジングの肉厚方向に対し平行な面を有することを特徴とする。   A portable electric tool according to a third aspect of the present invention is the portable electric tool according to the second aspect, characterized in that the side surface in the longitudinal direction has a surface parallel to the thickness direction of the housing.

本発明の請求項4に係る可搬式電動工具は、請求項1に係る可搬式電動工具において、係止部の長手方向側面部が曲面形状を有することを特徴とする。   A portable electric tool according to a fourth aspect of the present invention is the portable electric tool according to the first aspect, characterized in that the side surface in the longitudinal direction of the locking portion has a curved shape.

本発明の請求項5に係る可搬式電動工具は、請求項1に係る可搬式電動工具において、係止部の長手方向側面部に矩形形状の凸部を有することを特徴とする。   The portable electric tool according to claim 5 of the present invention is characterized in that, in the portable electric tool according to claim 1, a rectangular-shaped convex portion is provided on the side surface in the longitudinal direction of the locking portion.

本発明の請求項6に係る可搬式電動工具は、請求項1乃至請求項5のうち、いずれか1項に係る可搬式電動工具において、プロテクタはハウジング表面から突出して形成され、プロテクタの長手方向端部にはプロテクタの表面高さがハウジングの表面高さと略同じになるように傾斜部が形成されていることを特徴とする。   A portable electric tool according to a sixth aspect of the present invention is the portable electric tool according to any one of the first to fifth aspects, wherein the protector protrudes from the housing surface, and the longitudinal direction of the protector. The end portion is formed with an inclined portion so that the surface height of the protector is substantially the same as the surface height of the housing.

本発明の請求項7に係る可搬式電動工具は、請求項1乃至請求項5のうち、いずれか1項に係る可搬式電動工具において、プロテクタの長手方向端部におけるハウジングの表面高さがプロテクタの表面高さより高いことを特徴とする。   A portable electric tool according to a seventh aspect of the present invention is the portable electric tool according to any one of the first to fifth aspects, wherein the height of the surface of the housing at the end portion in the longitudinal direction of the protector is the protector. It is characterized by being higher than the surface height.

本発明の請求項8に係る可搬式電動工具は、請求項1乃至請求項7のうち、いずれか1項に係る可搬式電動工具において、プロテクタが二つの分割体の境界線上を含むグリップ部外郭表面に形成され、プロテクタの長手方向端部がグリップ部外郭の最小径部近傍領域以外の領域に形成されていることを特徴とする。   A portable electric tool according to an eighth aspect of the present invention is the portable electric tool according to any one of the first to seventh aspects, wherein the protector includes a boundary line between two divided bodies. It is formed on the surface, and the longitudinal end portion of the protector is formed in a region other than the region in the vicinity of the minimum diameter portion of the grip portion outline.

本発明の請求項1に係る可搬式電動工具によれば、プロテクタが長手方向端部領域においてハウジング表面にくさびを打つように接合されているので、加工費,金型費,及び材料費を増加させることなくプロテクタとハウジングの密着性を向上させることができる。   According to the portable power tool of the first aspect of the present invention, the protector is joined so as to wedge the housing surface in the end region in the longitudinal direction, thereby increasing the processing cost, the die cost, and the material cost. It is possible to improve the adhesion between the protector and the housing without causing them to occur.

本発明の請求項2に係る可搬式電動工具によれば、ハウジング表面から剥離される方向にプロテクタに応力が作用した場合であっても、係止部の先端部が抵抗となることによってプロテクタがハウジング表面から剥離しにくくなる。   According to the portable electric tool according to claim 2 of the present invention, even if stress is applied to the protector in the direction of peeling from the housing surface, the protector is prevented by the resistance of the tip of the locking portion. It becomes difficult to peel off from the housing surface.

本発明の請求項3に係る可搬式電動工具によれば、係止部の先端部がくさび形状により近くなるので、プロテクタとハウジングの密着性をより向上させることができる。またハウジング側のプロテクタ端部をバリ切りする際に押さえるハウジングの肉厚が厚くなるのでバリ切り作業が容易になる。   According to the portable electric tool according to the third aspect of the present invention, the front end portion of the locking portion becomes closer to the wedge shape, so that the adhesion between the protector and the housing can be further improved. Further, since the thickness of the housing to be pressed when the end of the protector on the housing side is deburred is increased, the deburring operation is facilitated.

本発明の請求項4に係る可搬式電動工具によれば、落下時又は衝突時の衝撃により発生する応力を係止部において緩和することができる。   According to the portable electric tool according to the fourth aspect of the present invention, the stress generated by the impact at the time of dropping or collision can be relieved in the locking portion.

本発明の請求項5に係る可搬式電動工具によれば、ハウジング表面から剥離される方向にプロテクタに応力が作用した場合であっても、係止部の先端部が抵抗となることによってプロテクタがハウジング表面から剥離しにくくなる。またハウジング側のプロテクタ端部をバリ切りする際に押さえるハウジングの肉厚が厚くなるのでバリ切り作業が容易となる。   According to the portable electric tool according to claim 5 of the present invention, even when stress is applied to the protector in the direction in which the protector is peeled from the housing surface, the protector is prevented by the resistance of the distal end portion of the locking portion. It becomes difficult to peel off from the housing surface. Further, since the thickness of the housing to be pressed when the end portion of the protector on the housing side is deburred is increased, the deburring operation is facilitated.

本発明の請求項6に係る可搬式電動工具によれば、手の爪やその他の物体によりハウジング表面の沿面方向に応力が発生した場合にハウジング表面からプロテクタを剥離させる方向に応力が加わりにくくなるので、プロテクタがハウジング表面から剥離しにくくなる。   According to the portable electric tool according to the sixth aspect of the present invention, when stress is generated in the creeping direction of the housing surface by a fingernail or other object, the stress is not easily applied in the direction of peeling the protector from the housing surface. Therefore, it becomes difficult for a protector to peel from the housing surface.

本発明の請求項7に係る可搬式電動工具によれば、手の爪やその他の物体によりハウジング表面の沿面方向に応力が発生した場合にハウジング表面からプロテクタを剥離させる方向に応力が加わりにくくなるので、プロテクタがハウジング表面から剥離しにくくなる。   According to the portable electric tool according to claim 7 of the present invention, when stress is generated in the creeping direction of the housing surface by a fingernail or other object, the stress is not easily applied in the direction of peeling the protector from the housing surface. Therefore, it becomes difficult for a protector to peel from the housing surface.

本発明の請求項8に係る可搬式電動工具によれば、落下時又は衝突時の衝撃により発生する応力の影響を最小にし、信頼性を向上させることができる。   According to the portable electric tool according to the eighth aspect of the present invention, it is possible to minimize the influence of the stress generated by the impact at the time of dropping or the collision, and to improve the reliability.

以下、図面を参照して、本発明の実施形態となる可搬式のドリルドライバの構成について説明する。   Hereinafter, a configuration of a portable drill driver according to an embodiment of the present invention will be described with reference to the drawings.

本発明の実施形態となる可搬式のドリルドライバ1は、図1及び図2に示すように、電動モータ2を含めた駆動機構部3を内包する細長形状の胴体部4と胴体部4の中間部から略直角に突出されるグリップ部5とを備え、作業者はグリップ部5を握持してドリルドライバ1を操作することになる。ドリルドライバ1のハウジング6は駆動機構部3を内包した胴体部4の外郭4G(以下、胴体部外郭4Gと略記)とグリップ部5の外郭5G(以下、グリップ部外郭5Gと略記)とによって略T字状を成すように形成される。   As shown in FIGS. 1 and 2, a portable drill driver 1 according to an embodiment of the present invention includes an elongated body portion 4 including a drive mechanism portion 3 including an electric motor 2 and an intermediate body portion 4. The grip portion 5 is projected from the portion at a substantially right angle, and the operator grips the grip portion 5 and operates the drill driver 1. The housing 6 of the drill driver 1 is roughly defined by an outer shell 4G (hereinafter abbreviated as a body shell outer shell 4G) including the drive mechanism portion 3 and an outer shell 5G (hereinafter abbreviated as a grip portion outer shell 5G) of the grip portion 5. It is formed so as to form a T shape.

胴体部外郭4Gは略筒状に形成されている。胴体部外郭4Gに内包される駆動機構部3は、駆動源である電動モータ2と、電動モータ2の回転を減速する減速機構部7と、減速機構部7の回転駆動力を先端のチャック8まで伝達する駆動部9と、駆動部9を回転自在に保持する軸受部10とを備える。グリップ部外郭5Gも略筒状に形成されている。グリップ部外郭5Gの内部には、電動モータ2への電力供給を制御するスイッチ部11が取り付けられ、スイッチ部11はグリップ部5の根元側に押込み自在に取り付けたトリガー12によって作動されるようになっている。   The trunk part outline 4G is formed in a substantially cylindrical shape. The drive mechanism unit 3 included in the body shell outline 4G includes an electric motor 2 that is a drive source, a speed reduction mechanism unit 7 that decelerates the rotation of the electric motor 2, and a rotational driving force of the speed reduction mechanism unit 7 that uses the chuck 8 at the tip. And a bearing unit 10 that rotatably holds the drive unit 9. The grip portion outer shell 5G is also formed in a substantially cylindrical shape. A switch part 11 for controlling the power supply to the electric motor 2 is attached inside the grip part outline 5G, and the switch part 11 is actuated by a trigger 12 attached to the base side of the grip part 5 so as to be freely pushed. It has become.

グリップ部外郭5Gの突出側先端部(図中下端部)は、グリップ部外郭5Gの長手方向(図1では略上下方向)の中間部よりも拡大され、電池パック13を着脱自在に装着するための電池パック取付部14が形成されている。胴体部外郭4Gとグリップ部外郭5Gとを備えるハウジング6は、図1,図2中紙面直角方向の中央部で2分割されたほぼ勝手違いの二つの分割体(半割体)6L,6Rを対応する端面6a,6b同士を突き合わせることで中空状に形成されている。   The protruding end (lower end portion in the figure) of the grip portion outer shell 5G is larger than the middle portion in the longitudinal direction (substantially vertical direction in FIG. 1) of the grip portion outer shell 5G, so that the battery pack 13 can be detachably mounted. The battery pack mounting portion 14 is formed. A housing 6 having a trunk outer shell 4G and a grip outer shell 5G has two divided bodies (half-split bodies) 6L and 6R divided into two at the center in the direction perpendicular to the paper surface in FIGS. The corresponding end faces 6a, 6b are formed in a hollow shape by abutting each other.

二つの分割体6L,6Rの境界線上を含むハウジング6表面には弾性体からなるプロテクタ15a,15b,15cが形成されている。ハウジング6表面にプロテクタ15a,15b,15cを形成することにより、ドリルドライバ1が落下又は衝突することによって対象部材(例えばフローリング床や壁等)を傷つけることを防止すると同時に落下時又は衝突時の衝撃からドリルドライバ1自体を保護することができる。   Protectors 15a, 15b, and 15c made of an elastic body are formed on the surface of the housing 6 including the boundary line between the two divided bodies 6L and 6R. By forming the protectors 15a, 15b, and 15c on the surface of the housing 6, the drill driver 1 is prevented from being damaged by being dropped or collided, and at the same time, from the impact at the time of dropping or colliding. The drill driver 1 itself can be protected.

プロテクタ15a,15b,15cの長手方向端部16には、図3に示すようにハウジング6の肉厚方向に突出する係止部16が形成されている。このような構成によれば、プロテクタ15a,15b,15cは長手方向端部領域においてハウジング6にくさびを打つように接合されるので、成形温度が低い場合であっても、プロテクタ15a,15b,15cとハウジング6間の密着性を向上させ、結果としてプロテクタ15a,15b,15cがハウジング6表面から剥離することを抑制できる。   As shown in FIG. 3, locking portions 16 that protrude in the thickness direction of the housing 6 are formed at the longitudinal end portions 16 of the protectors 15 a, 15 b, and 15 c. According to such a configuration, the protectors 15a, 15b, and 15c are joined so as to wedge the housing 6 in the longitudinal end region, so that the protectors 15a, 15b, and 15c are formed even when the molding temperature is low. As a result, it is possible to prevent the protectors 15a, 15b, and 15c from peeling from the surface of the housing 6.

係止部16はグリップ部外郭5Gの最小径部(図1に示す矢印部分)近傍領域以外の領域に形成されている。このような構成によれば、落下時又は衝突時の衝撃によってハウジング6に発生する応力の影響を最小にし、信頼性を向上させることができる。   The locking portion 16 is formed in a region other than the region near the minimum diameter portion (arrow portion shown in FIG. 1) of the grip portion outer shell 5G. According to such a configuration, the influence of the stress generated in the housing 6 due to the impact at the time of dropping or collision can be minimized, and the reliability can be improved.

係止部16が図4に示すような長手方向側面部が長手方向に傾斜した略台形形状を有するようにしてもよい。このような構成によれば、ハウジング6表面から剥離する方向にプロテクタ15a,15b,15cに応力が作用した場合であっても、係止部16の先端部が抵抗となることによってハウジング6表面からプロテクタ15a,15b,15cが剥離しにくくなる。   The locking portion 16 may have a substantially trapezoidal shape in which the longitudinal side surface portion is inclined in the longitudinal direction as shown in FIG. According to such a configuration, even when stress is applied to the protectors 15a, 15b, and 15c in the direction of peeling from the surface of the housing 6, the distal end portion of the locking portion 16 becomes a resistance so that the surface of the housing 6 The protectors 15a, 15b, and 15c are difficult to peel off.

図4に示す係止部16の形状において、図5に示すように長手方向側面部がハウジングの肉厚方向に対し平行な面17を有するようにしてもよい。このような構成によれば、係止部16の先端部がくさび形状になるので、プロテクタ15a,15b,15cとハウジング6の密着性をより向上させることができる。またハウジング6側のプロテクタ15a,15b,15c端部をバリ切りする際に押さえるハウジングの肉厚が厚くなるのでバリ切り作業が容易になる。   In the shape of the locking portion 16 shown in FIG. 4, as shown in FIG. 5, the longitudinal side surface portion may have a surface 17 parallel to the thickness direction of the housing. According to such a structure, since the front-end | tip part of the latching | locking part 16 becomes a wedge shape, the adhesiveness of the protectors 15a, 15b, 15c and the housing 6 can be improved more. Further, since the thickness of the housing to be pressed when the end portions of the protectors 15a, 15b and 15c on the housing 6 side are deburred is increased, the deburring operation is facilitated.

係止部16の長手方向側面部が図6に示すように曲面形状を有するようにしてもよい。このような構成によれば、落下時又は衝突時の衝撃により発生する応力を緩和することができる。   The longitudinal side surface portion of the locking portion 16 may have a curved surface shape as shown in FIG. According to such a configuration, it is possible to relieve stress generated by an impact at the time of dropping or collision.

係止部16の長手方向側面部に図7,8に示すように矩形形状の凸部18を形成してもよい。このような構成によれば、ハウジング6表面から剥離される方向にプロテクタ15a,15b,15cに応力が作用した場合であっても、係止部16の先端部が抵抗となることによってハウジング6表面からプロテクタ15a,15b,15cが剥離しにくくなる。またハウジング6側のプロテクタ15a,15b,15c端部をバリ切りする際に押さえるハウジング6の肉厚が厚くなるのでバリ切り作業が容易となる。   As shown in FIGS. 7 and 8, a rectangular convex portion 18 may be formed on the side surface in the longitudinal direction of the locking portion 16. According to such a configuration, even when stress is applied to the protectors 15a, 15b, and 15c in the direction in which the protector 15a, 15b, and 15c is peeled off, the front end portion of the locking portion 16 becomes a resistance, thereby causing the housing 6 surface. Therefore, the protectors 15a, 15b, and 15c are difficult to peel off. Further, since the thickness of the housing 6 to be pressed when the end portions of the protectors 15a, 15b and 15c on the housing 6 side are deburred is increased, the deburring operation is facilitated.

図9に示すように、プロテクタ15a,15b,15cはハウジング6表面から突出して形成され、プロテクタ6の長手方向端部にはプロテクタ6の表面高さがハウジングの表面高さと略同じになるように傾斜部19が形成されているようにしてもよい。このような構成によれば、手の爪やその他の物体によりハウジング6表面の沿面方向に応力が発生した場合にハウジング6表面からプロテクタ15a,15b,15cを剥離させる方向に応力が加わりにくくなるので、ハウジング6表面からプロテクタ15a,15b,15cが剥離しにくくなる。またグリップ部外郭5Gを握時した際の違和感が無くなる。   As shown in FIG. 9, the protectors 15a, 15b, and 15c are formed so as to protrude from the surface of the housing 6, and the surface height of the protector 6 is substantially the same as the surface height of the housing at the longitudinal end portion of the protector 6. An inclined portion 19 may be formed. According to such a configuration, when stress is generated in the creeping direction of the surface of the housing 6 due to a fingernail or other object, it is difficult to apply stress in the direction in which the protectors 15a, 15b, and 15c are peeled off from the surface of the housing 6. The protectors 15a, 15b, and 15c are difficult to peel from the surface of the housing 6. In addition, there is no sense of incongruity when gripping the grip portion outline 5G.

図10に示すように、プロテクタ15a,15b,15cの長手方向端部におけるハウジング6の表面高さがプロテクタ15a,15b,15cの表面高さより高くなるようにしてもよい。このような構成によれば、手の爪やその他の物体によりハウジング表面の沿面方向に応力が発生した場合にハウジング表面からプロテクタを剥離させる方向に応力が加わりにくくなるので、ハウジング表面からプロテクタが剥離しにくくなる。   As shown in FIG. 10, the surface height of the housing 6 at the longitudinal ends of the protectors 15a, 15b, 15c may be higher than the surface height of the protectors 15a, 15b, 15c. According to such a configuration, when stress is generated in the creeping direction of the housing surface by a fingernail or other object, it is difficult to apply stress in the direction of peeling the protector from the housing surface, so the protector is peeled off from the housing surface. It becomes difficult to do.

以上、本発明者らによってなされた発明を適用した実施の形態について説明したが、この実施の形態による本発明の開示の一部をなす論述及び図面により本発明は限定されることはない。すなわち、上記実施の形態に基づいて当業者等によりなされる他の実施の形態、実施例及び運用技術等は全て本発明の範疇に含まれることは勿論であることを付け加えておく。   As mentioned above, although the embodiment to which the invention made by the present inventors was applied has been described, the present invention is not limited by the description and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above embodiments are all included in the scope of the present invention.

本発明の実施形態となる可搬式のドリルドライバの側面図である。It is a side view of the portable drill driver used as the embodiment of the present invention. 図1に示すドリルドライバの片方のハウジングを取り外して内部を見たドリルドライバの側断面図である。It is the sectional side view of the drill driver which removed one housing of the drill driver shown in FIG. 1, and looked at the inside. 本発明の実施形態となるプロテクタの長手方向端部形状を示す模式図である。It is a schematic diagram which shows the longitudinal direction edge part shape of the protector used as embodiment of this invention. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG. 図3に示すプロテクタの長手方向端部形状の応用例を示す模式図である。It is a schematic diagram which shows the application example of the longitudinal direction edge part shape of the protector shown in FIG.

符号の説明Explanation of symbols

1:ドリルドライバ(可搬式電動工具)
2:電動モータ
3:駆動機構部
4G:胴体部外郭
5G:グリップ部外郭
6:ハウジング
6a,6b:端面(端縁)
13:電池パック
14:電池パック取付部
15a,15b,15c:プロテクタ
16:係止部
1: Drill driver (portable power tool)
2: Electric motor 3: Drive mechanism 4G: Body shell 5G: Grip shell 6: Housing 6a, 6b: End face (edge)
13: Battery pack 14: Battery pack mounting portions 15a, 15b, 15c: Protector 16: Locking portion

Claims (8)

駆動源である電動モータ,前記電動モータの回転動力を伝達する減速機構部,前記減速機構部の回転動力を先端工具に伝達する駆動部,及び前記駆動部を回転自在に保持する軸受部を内包する胴体部外郭と前記電動モータへの電力供給を制御するスイッチ部を内包するグリップ部外郭とを有するハウジングを備え、当該ハウジングが二つの分割体の周方向端縁同士を付き合わせて略筒状に形成されていると共にグリップ部外郭の長手方向先端部に電池パック取付部が形成された可搬式電動工具において、前記二つの分割体の境界線上を含む前記ハウジング表面を覆う弾性体からなるプロテクタを備え、プロテクタの長手方向端部には前記ハウジングの肉厚方向に突出する係止部が形成されていることを特徴とする可搬式電動工具。   An electric motor as a drive source, a speed reduction mechanism portion that transmits the rotational power of the electric motor, a drive portion that transmits the rotational power of the speed reduction mechanism portion to a tip tool, and a bearing portion that rotatably holds the drive portion are included. And a grip portion outer shell including a switch portion for controlling power supply to the electric motor, and the housing has a substantially cylindrical shape with the circumferential edges of the two divided bodies attached to each other. A portable power tool having a battery pack mounting portion formed at the front end in the longitudinal direction of the outer periphery of the grip portion, and a protector made of an elastic body covering the housing surface including the boundary line between the two divided bodies. The portable electric tool is characterized in that a locking portion protruding in the thickness direction of the housing is formed at the longitudinal end of the protector. 請求項1に記載の可搬式電動工具において、前記係止部の先端部は長手方向側面部が傾斜した略台形形状を有することを特徴とする可搬式電動工具。   The portable electric tool according to claim 1, wherein a tip end portion of the locking portion has a substantially trapezoidal shape with a longitudinal side portion inclined. 請求項2に記載の可搬式電動工具において、前記長手方向側面部が前記ハウジングの肉厚方向に対し平行な面を有することを特徴とする可搬式電動工具。   The portable electric tool according to claim 2, wherein the side surface portion in the longitudinal direction has a surface parallel to the thickness direction of the housing. 請求項1に記載の可搬式電動工具において、前記係止部の長手方向側面部が曲面形状を有することを特徴とする可搬式電動工具。   The portable electric tool according to claim 1, wherein a longitudinal side surface portion of the locking portion has a curved shape. 請求項1に記載の可搬式電動工具において、前記係止部の長手方向側面部に矩形形状の凸部を有することを特徴とする可搬式電動工具。   The portable electric tool according to claim 1, further comprising a rectangular convex portion on a side surface in a longitudinal direction of the locking portion. 請求項1乃至請求項5のうち、いずれか1項に記載の可搬式電動工具において、前記プロテクタは前記ハウジング表面から突出して形成され、プロテクタの長手方向端部にはプロテクタの表面高さがハウジングの表面高さと略同じになるように傾斜部が形成されていることを特徴とする可搬式電動工具。   The portable power tool according to any one of claims 1 to 5, wherein the protector is formed so as to protrude from the surface of the housing, and a surface height of the protector is a housing at a longitudinal end portion of the protector. A portable electric tool characterized in that an inclined portion is formed so as to be substantially the same as the surface height of the. 請求項1乃至請求項5のうち、いずれか1項に記載の可搬式電動工具において、前記プロテクタの長手方向端部におけるハウジングの表面高さが当該プロテクタの表面高さより高いことを特徴とする可搬式電動工具。   The portable power tool according to any one of claims 1 to 5, wherein a surface height of the housing at a longitudinal end portion of the protector is higher than a surface height of the protector. Portable power tool. 請求項1乃至請求項7のうち、いずれか1項に記載の可搬式電動工具において、前記プロテクタ二つの分割体の境界線上を含む前記グリップ部外郭表面に形成され、プロテクタの長手方向端部がグリップ部外郭の最小径部近傍領域以外の領域に形成されていることを特徴とする可搬式電動工具。   The portable power tool according to any one of claims 1 to 7, wherein the protector is formed on an outer surface of the grip portion including a boundary line between two divided bodies, and a longitudinal end portion of the protector is formed on the outer surface of the grip portion. A portable electric tool characterized by being formed in a region other than a region in the vicinity of a minimum diameter portion of a grip portion outer shell.
JP2007194912A 2007-07-26 2007-07-26 Portable power tool Pending JP2009028840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007194912A JP2009028840A (en) 2007-07-26 2007-07-26 Portable power tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publication Number Publication Date
JP2009028840A true JP2009028840A (en) 2009-02-12

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013071188A (en) * 2011-09-27 2013-04-22 Hitachi Koki Co Ltd Power tool
JP2014136296A (en) * 2013-01-17 2014-07-28 Hitachi Koki Co Ltd Portable working machine
JP2015051482A (en) * 2013-09-06 2015-03-19 株式会社マキタ Electric tool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013071188A (en) * 2011-09-27 2013-04-22 Hitachi Koki Co Ltd Power tool
JP2014136296A (en) * 2013-01-17 2014-07-28 Hitachi Koki Co Ltd Portable working machine
CN104884209A (en) * 2013-01-17 2015-09-02 日立工机株式会社 Portable work tool
US10035253B2 (en) 2013-01-17 2018-07-31 Hitachi Koki Co., Ltd. Portable work tool
EP2945782B1 (en) * 2013-01-17 2019-03-13 Koki Holdings Co., Ltd. Portable work tool
JP2015051482A (en) * 2013-09-06 2015-03-19 株式会社マキタ Electric tool

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