JPH0737581U - Hammer tool - Google Patents
Hammer toolInfo
- Publication number
- JPH0737581U JPH0737581U JP6743693U JP6743693U JPH0737581U JP H0737581 U JPH0737581 U JP H0737581U JP 6743693 U JP6743693 U JP 6743693U JP 6743693 U JP6743693 U JP 6743693U JP H0737581 U JPH0737581 U JP H0737581U
- Authority
- JP
- Japan
- Prior art keywords
- outer frame
- frame case
- cover
- motor
- opening
- 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.)
- Granted
Links
Abstract
(57)【要約】
【目的】 本考案は、打撃工具の外枠ケースに関するも
のであり、その目的とするところは、外枠ケースの軽量
化を図ると共に打撃工具の外観形状を向上させ、更に部
品点数を削減することで安価な打撃工具を提供すること
である。
【構成】 減速歯車機構部、回転軸及び回転を往復動に
変換する変換機構部とを覆う外枠ケースＡ２及び外枠ケ
ースＢ３の一方をモータハウジング１で覆い、他方をモ
ータの冷却用風路口７ｂ及び外枠ケースＢ３の開口部３
ａをカバーする開口部カバー７ａの形成される樹脂製の
外枠ケースカバー７で覆う。
(57) [Abstract] [Purpose] The present invention relates to an outer casing of a striking tool, and an object of the present invention is to reduce the weight of the outer casing and improve the outer shape of the striking tool. It is to provide an inexpensive impact tool by reducing the number of parts. [Structure] One of an outer frame case A2 and an outer frame case B3 covering a reduction gear mechanism part, a rotary shaft, and a conversion mechanism part for converting rotation into reciprocating motion is covered with a motor housing 1, and the other is a cooling air passage port for a motor. 7b and the opening 3 of the outer case B3
It is covered with an outer frame case cover 7 made of resin in which an opening cover 7a for covering a is formed.
Description
【０００１】[0001]
本考案は、打撃工具等の外枠に関するものである。 The present invention relates to an outer frame of a striking tool or the like.
【０００２】[0002]
従来の打撃工具は、減速歯車機構部、回転軸及び回転を往復動に変換する変換 機構部とを覆う外枠ケースに潤滑剤の補給及び分解組立用のための開口部を設け ており、外枠ケースには開口部のみカバーすることのできる開口部カバー部材が 取付けられていた。また外枠ケース内の内蔵物が露出しない部分に開口部を設け ており、この開口部から異物が入らないようにスリットの形成された開口部カバ ーを外枠ケースに取付け、モータの冷却用風路口としていた。更にこの外枠ケー スは、内蔵物を覆うため強度部材により成形されると共に電動工具の外観形状を 美しく見せる役目を有している。このため外枠ケースは強固な材料、例えばアル ミ成形品等で作られていた。 Conventional impact tools have an opening for replenishment and disassembly of lubricant in the outer frame case that covers the reduction gear mechanism, the rotation shaft, and the conversion mechanism that converts rotation into reciprocation. An opening cover member that can cover only the opening was attached to the frame case. In addition, an opening is provided in the outer frame case where the internal components are not exposed.A slit-formed opening cover is attached to the outer frame case to prevent foreign matter from entering through this opening to cool the motor. It was used as an outlet for wind. Furthermore, this outer frame case is formed of a strength member to cover the internal components and has the role of making the external shape of the power tool look beautiful. For this reason, the outer frame case was made of a strong material, such as an aluminum molded product.
【０００３】[0003]
従来における打撃工具等の外枠ケースは、ある程度の強度を確保するために必 要以上の肉厚及び容積を有して成形されており、このことが電動工具における軽 量化の障害となっていた。また各々の開口部にそれぞれのカバーを固定すること で部品点数が増大し、価格高となってしまっていた。 Conventional outer casings such as impact tools are molded with a wall thickness and volume that are more than necessary to secure a certain level of strength, which has been an obstacle to the weight reduction of electric power tools. . Moreover, fixing each cover to each opening increased the number of parts, leading to higher prices.
【０００４】 本考案の目的は、打撃工具の軽量化を図り、且つ外観形状を美しくすると共に 部品点数を削減することにより安価な打撃工具等を提供することである。An object of the present invention is to provide an inexpensive impact tool and the like by reducing the weight of the impact tool, making the external shape beautiful, and reducing the number of parts.
【０００５】[0005]
上記目的は、減速歯車機構部、回転軸及び往復変換機構部を覆う外枠ケースを 強度部材の役目にしぼり込み、必要最小限な肉厚、容積及び材質を考慮し設計さ れ、外枠ケースの外周に外枠ケースの開口部（一つは潤滑剤の給油及び分解組立 用の開口部、もう一つはモートルの冷却風の風路口の開口部）を覆う役目と外観 形状を美しく見せる役目とを兼ね備えた樹脂製の外枠ケースカバーを配設するこ とで達成される。 The purpose of the above is to narrow down the outer frame case that covers the reduction gear mechanism part, the rotary shaft and the reciprocating conversion mechanism part as a strength member, and is designed in consideration of the minimum necessary thickness, volume and material. The role of covering the openings of the outer frame case (one for the lubrication and disassembly / assembly of the lubricant, and the other for the air passage opening of the cooling air of the motor) on the outer circumference of This is achieved by arranging a resin-made outer frame case cover that also serves as the above.
【０００６】[0006]
モータを覆うモータハウジングが、減速歯車機構部、回転軸及び往復変換機構 部を覆う外枠ケースＡと外枠ケースＢとの一部を覆っている。この３部品は、ハ ウジング止メネジにより固定されており、外枠ケースＡと外枠ケースＢは内蔵部 の軸受と外被用外枠部品であり、強度的に必要最小限な肉厚で設計されている。 このため外枠ケースＡと外枠ケースＢの外観形状は、内蔵物に合わせて複雑な凹 凸形状となり美しさに欠けてしまうため、外枠ケースの外周を外観形状を美しく 見せるための外枠ケースカバーで覆う。外枠ケースカバーはモータハウジングに 突当り、外枠ケースカバーＡの一部と外枠ケースＢを覆い、外枠ケースＢに外枠 ケースカバー止メネジで固定している。外枠ケースカバーは、外枠ケースのカバ ー、外枠ケースＢ開口部のカバー及びモータの冷却用風路口等の役目を兼ね備え る部材であり、均一な肉厚で軽量化を図るために樹脂製により成形されている。 A motor housing that covers the motor covers a part of the outer frame case A and the outer frame case B that covers the reduction gear mechanism part, the rotary shaft, and the reciprocating conversion mechanism part. These three parts are fixed with a female screw for housing, and the outer case A and outer case B are the bearing of the built-in part and the outer frame part for the outer cover, and are designed with the minimum necessary thickness for strength. Has been done. Therefore, the outer shape of the outer case A and the outer case B becomes complicated concave and convex according to the built-in object, and lacks in beauty. Therefore, the outer case for making the outer shape of the outer case look beautiful. Cover with a case cover. The outer frame case cover abuts on the motor housing, covers a part of the outer frame case cover A and the outer frame case B, and is fixed to the outer frame case B with a female screw for the outer frame case cover. The outer frame case cover is a member that also serves as a cover for the outer frame case, a cover for the opening of the outer frame case B, a cooling air passage opening for the motor, and the like. It is formed by manufacturing.
【０００７】[0007]
本考案になる一実施例を図１乃至図４を用いて説明する。図１及び図２におい て、モータハウジング１には、固定子１４と回転子１３からなるモータが内蔵さ れている。回転子１３に設けられた回転子ピニオン１３ａの一方は、ファースト ギヤ１６とかみあい、ファーストギヤ１６と固着したクランクシャフト１７に回 転を伝達するクランクシャフト１７の回転は、コンロッド１８、ピストン１９、 ストライカ２０により往復動から打撃動に変換され、セカンドハンマ２１を介し て、工具保持部６に取付く先端工具を打撃する。他方はセカンドギヤ２２とかみ あい、かさ歯車を介してシリンダ２３を回転する。シリンダ２３の回転は、工具 保持部６に取付く先端工具に伝えられる構造である。これらの内蔵物は、分解組 立の関係から外枠ケースＡ２、外枠ケースＢ３、外枠ケースＣ４、フロントカバ ー５で分割された外枠ケースで覆われ、ハウジング止メネジ１０、ケース止メネ ジ１１、フロントカバ止メネジ１２で固着している。モータハウジング１は、外 枠ケースＡ２と外枠ケースＢ３の一部を覆い、ハウジング止メネジ１０で固着し 、スイッチハンドル８は、モータハウジング１と外枠ケースＢ３にハンドル止メ ネジ９で固着している。モータハウジング１とスイッチハンドル８は、内蔵物を 覆い強度的にも十分な樹脂製で成形している。しかし、外枠ケースＡ２、外枠ケ ースＢ３及び外枠ケースＣ４は強度的にアルミ鋳物となっている。このため内蔵 物を覆い外観を美しく見せることと、均一な最少限度の肉厚にすることができず 、軽量化を図る上で障害となる。このような障害を解決するために図３及び図４ に示す外枠ケースＡ２及び外枠ケースＢ３の肉厚を均一に最少限とし、外枠ケー スＡ２及び外枠ケースＢ３を覆う外枠ケースカバー７を設けている。外枠ケース カバー７には、図３に示すように固定子１４、回転子１３の冷却のために、回転 子１３に設けた冷却ファン１５の回転より、冷却風の流れ方向２５の風の流れが 生じ、風路口Ａ１ａから入った冷却風が風路口Ｂ７ｂより流出する構造となって いる。また外枠ケースＢ３には、分解組立の関係から開口部２ａが必要となりこ の部分のカバーとして開口部カバー７ａが必要となってくる。これらの機能（製 品の軽量化、外観を美しくする、冷却風路の確保、開口部カバー）を盛り込んだ 外枠ケースカバー７を外枠ケースＢ３にケース止メネジにより固定する。 An embodiment of the present invention will be described with reference to FIGS. In FIGS. 1 and 2, the motor housing 1 has a built-in motor including a stator 14 and a rotor 13. One of the rotor pinions 13a provided on the rotor 13 meshes with the first gear 16 and the rotation of the crankshaft 17 transmitting the rotation to the crankshaft 17 fixed to the first gear 16 is performed by the connecting rod 18, the piston 19, and the striker. The reciprocating motion is converted into a striking motion by 20 and the tip tool attached to the tool holding part 6 is struck through the second hammer 21. The other engages with the second gear 22 and rotates the cylinder 23 via a bevel gear. The rotation of the cylinder 23 is transmitted to the tip tool attached to the tool holder 6. These built-in components are covered with the outer frame case A2, the outer frame case B3, the outer frame case C4, and the outer frame case divided by the front cover 5 because of the disassembly and assembly, and the housing set screw 10 and the case set menu. It is fixed with a screw 11 and a front cover fixing female screw 12. The motor housing 1 covers a part of the outer frame case A2 and the outer frame case B3 and is fixed by a housing set screw 10, and the switch handle 8 is fixed by a handle set screw 9 to the motor housing 1 and the outer case B3. ing. The motor housing 1 and the switch handle 8 cover the built-in components and are made of resin with sufficient strength. However, the outer frame case A2, the outer frame case B3, and the outer frame case C4 are made of cast aluminum in terms of strength. For this reason, it is not possible to cover the built-in object and make the appearance look beautiful, and it is not possible to achieve a uniform minimum wall thickness, which is an obstacle to weight reduction. In order to solve such an obstacle, the outer case A2 and the outer case B3 shown in FIGS. 3 and 4 are uniformly minimized in thickness to cover the outer case A2 and the outer case B3. A cover 7 is provided. As shown in FIG. 3, in the outer frame case cover 7, in order to cool the stator 14 and the rotor 13, the cooling fan 15 provided in the rotor 13 rotates so that the cooling air flows in the cooling air flow direction 25. Occurs, and the cooling air entering from the air passage opening A1a flows out from the air passage opening B7b. Further, the outer frame case B3 requires the opening 2a due to the disassembly and assembly, and the opening cover 7a is required as a cover for this portion. The outer frame case cover 7 incorporating these functions (lightening the product, making the appearance beautiful, ensuring the cooling air passage, opening cover) is fixed to the outer frame case B3 by means of a case set screw.
【０００８】[0008]
本考案によれば、外枠ケースを必要最小限の均一な肉厚により形成し、外枠ケ ースカバーを外観形状を美しく見せる構造とすることで、強度の必要な外枠ケー スをアルミ鋳物で成形し、外被のみの外枠ケースカバーを比重の軽い樹脂製の成 形品とすることで、製品の軽量化を図ることが可能になると共に外枠ケースカバ ーに開口部カバーと風路口とを一体形成することにより部品点数の削減し安価な 打撃工具等を提供することができる。 According to the present invention, the outer frame case is formed of the minimum required uniform thickness, and the outer frame case cover has a structure that makes the external shape look beautiful. It is possible to reduce the weight of the product by molding and molding the outer case cover with only the outer cover as a resin molded product with a low specific gravity, and at the same time, the outer case cover has an opening cover and an air passage opening. It is possible to provide an inexpensive impact tool or the like by reducing the number of parts by integrally forming the.
【図１】 本考案になる外枠ケースカバーの一実施例を
示す打撃工具の側面図である。FIG. 1 is a side view of an impact tool showing an embodiment of an outer frame case cover according to the present invention.
【図２】 図１の部分断面図である。FIG. 2 is a partial cross-sectional view of FIG.
【図３】 図１のＡ−Ａ線断面図である。3 is a cross-sectional view taken along the line AA of FIG.
【図４】 図２のＢ−Ｂ線断面図である。4 is a sectional view taken along line BB of FIG.
１はモータハウジング、１ａは風路口Ａ、２は外枠ケー
スＡ，２ａは開口部、３は外枠ケースＢ、７は外枠ケー
スカバー、７ａは開口部カバー、７ｂは風路口Ｂ、８は
スイッチハンドル、１３は回転子、１３ａは回転子ピニ
オン、１４は固定子、１５は冷却ファン、１６はファー
ストギヤ、１７はクランクシャフト、２２はセカンドギ
ヤ、２４は外枠ケースカバ止メネジである。1 is a motor housing, 1a is an air passage opening A, 2 is an outer frame case A, 2a is an opening portion, 3 is an outer frame case B, 7 is an outer frame case cover, 7a is an opening portion cover, 7b is an air passage opening B, 8 Is a switch handle, 13 is a rotor, 13a is a rotor pinion, 14 is a stator, 15 is a cooling fan, 16 is a first gear, 17 is a crankshaft, 22 is a second gear, and 24 is an outer frame case cover female screw.
Claims (1)
具に伝達する歯車機構部と、該歯車機構部及び前記モー
タを内蔵するモータハウジングと、前記モータの回転動
力を往復動に変換する往復変換機構部を内蔵する外枠ケ
ースと、該外枠ケースの開口部を覆う開口部カバーと、
前記モータの冷却用風路口とを備えた打撃工具におい
て、前記外枠ケースの外周に前記モータの冷却用風路口
及び前記外枠ケースの開口部を覆う前記開口部カバーと
を一体形成した樹脂製の外枠ケースカバーを設けること
を特徴とする打撃工具。1. A motor, a gear mechanism unit for transmitting the rotational power of the motor to a tip tool, a motor housing containing the gear mechanism unit and the motor, and a reciprocating unit for converting the rotational power of the motor into a reciprocating motion. An outer frame case containing the conversion mechanism section, an opening cover covering the opening of the outer frame case,
In a striking tool provided with a cooling air passage opening for the motor, a resin made by integrally forming the cooling air passage opening for the motor and the opening cover covering the opening portion of the outer frame case on the outer periphery of the outer frame case. A striking tool characterized by being provided with an outer frame case cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993067436U JP2596444Y2 (en) | 1993-12-17 | 1993-12-17 | Impact tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993067436U JP2596444Y2 (en) | 1993-12-17 | 1993-12-17 | Impact tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0737581U true JPH0737581U (en) | 1995-07-11 |
| JP2596444Y2 JP2596444Y2 (en) | 1999-06-14 |
Family
ID=13344877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993067436U Expired - Lifetime JP2596444Y2 (en) | 1993-12-17 | 1993-12-17 | Impact tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596444Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000006056A (en) * | 1998-06-17 | 2000-01-11 | Makita Corp | Power tool |
| JP2003245865A (en) * | 2002-02-22 | 2003-09-02 | Hitachi Koki Co Ltd | Electric power tool |
| US9882452B2 (en) | 2010-07-14 | 2018-01-30 | Hitachi Koki Co., Ltd. | Power tool having circuit board |
| JP2019522554A (en) * | 2016-08-29 | 2019-08-15 | エンジェル カンパニー リミテッド | A juicer that is easy to manufacture and has improved performance |
-
1993
- 1993-12-17 JP JP1993067436U patent/JP2596444Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000006056A (en) * | 1998-06-17 | 2000-01-11 | Makita Corp | Power tool |
| JP2003245865A (en) * | 2002-02-22 | 2003-09-02 | Hitachi Koki Co Ltd | Electric power tool |
| US9882452B2 (en) | 2010-07-14 | 2018-01-30 | Hitachi Koki Co., Ltd. | Power tool having circuit board |
| JP2019522554A (en) * | 2016-08-29 | 2019-08-15 | エンジェル カンパニー リミテッド | A juicer that is easy to manufacture and has improved performance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2596444Y2 (en) | 1999-06-14 |
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